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AIR-COOLED SCREW

LIQUID CHILLERS

INSTALLATION, OPERATION, MAINTENANCE Supersedes: 201.23-NM2 (418) Form 201.23-NM2 (919)

035-21506-101

YCIV STYLE A MODELS

YCIV0157-0397, 60 HZ
(150-260 TONS)
AIR-COOLED SCREW LIQUID CHILLERS
E/V HIGH EFFICIENCY AND S/P STANDARD EFFICIENCY

R-134a

Issue Date:
September 30, 2019
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

IMPORTANT!
READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
This equipment is a relatively complicated apparatus. which it is situated, as well as severe personal injury or
During rigging, installation, operation, maintenance, death to themselves and people at the site.
or service, individuals may be exposed to certain com-
ponents or conditions including, but not limited to: This document is intended for use by owner-authorized
heavy objects, refrigerants, materials under pressure, rigging, installation, and operating/service personnel. It
rotating components, and both high and low voltage. is expected that these individuals possess independent
Each of these items has the potential, if misused or training that will enable them to perform their assigned
handled improperly, to cause bodily injury or death. It tasks properly and safely. It is essential that, prior to
is the obligation and responsibility of rigging, instal- performing any task on this equipment, this individual
lation, and operating/service personnel to identify and shall have read and understood the on-product labels,
recognize these inherent hazards, protect themselves, this document and any referenced materials. This in-
and proceed safely in completing their tasks. Failure dividual shall also be familiar with and comply with
to comply with any of these requirements could result all applicable industry and governmental standards and
in serious damage to the equipment and the property in regulations pertaining to the task in question.

SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to specific situations:

Indicates a possible hazardous situation Identifies a hazard which could lead to

which will result in death or serious injury damage to the machine, damage to other
if proper care is not taken. equipment and/or environmental pollu-
tion if proper care is not taken or instruc-
tions and are not followed.

Indicates a potentially hazardous situa- Highlights additional information useful

tion which will result in possible injuries to the technician in completing the work
or damage to equipment if proper care is being performed properly.
not taken.

External wiring, unless specified as an optional connection in the manufacturer’s product line, is not
to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls
and any external wiring must not be installed inside the micro panel. All wiring must be in accor-
dance with Johnson Controls’ published specifications and must be performed only by a qualified
electrician. Johnson Controls will NOT be responsible for damage/problems resulting from improper
connections to the controls or application of improper control signals. Failure to follow this warn-
ing will void the manufacturer’s warranty and cause serious damage to property or personal injury.

2 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

CHANGEABILITY OF THIS DOCUMENT

In complying with Johnson Controls’ policy for con- documents to the equipment. If there is any question
tinuous product improvement, the information con- regarding the applicability of these documents, rig-
tained in this document is subject to change without ging, lifting, and operating/service personnel should
notice. Johnson Controls makes no commitment to verify whether the equipment has been modified and
update or provide current information automatically if current literature is available from the owner of the
to the manual or product owner. Updated manuals, if equipment prior to performing any work on the equip-
applicable, can be obtained by contacting the nearest ment.
Johnson Controls Service office or accessing the John-
son Controls QuickLIT website at http://cgproducts. CHANGE BARS
johnsoncontrols.com. Revisions made to this document are indicated with a
It is the responsibility of rigging, lifting, and operating/ line along the left or right hand column in the area the
service personnel to verify the applicability of these revision was made. These revisions are to technical in-
formation and any other changes in spelling, grammar
or formatting are not included.
The Control/VSD Cabinet contains lethal
high AC and DC voltages. Before per- NEVER allow the Control Panel VSD
forming service inside the cabinet, remove Cabinet doors to remain open if there
the AC supply feeding the chiller and is a potential for rain to enter the panel.
verify using a non-contact voltage sensor. Keep doors closed and assure all latches
are engaged on each door unless the unit
The DC voltage on the VSD DC Bus is being serviced.
will take 5 minutes to bleed off, after AC
power is removed. Always check the DC
Bus Voltage with a Voltmeter to assure ALWAYS lockout the disconnect supply-
the capacitor charge has bled off before ing AC to the chiller.
working on the system.

NEVER short out the DC Bus to dis-

charge the filter capacitors.
The 1L Line Inductor will reach operating
temperatures of over 150°C (300°F.). DO
NOT open panel doors during operation.
Assure the inductor is cool whenever
working near the inductor with power
NEVER place loose tools, debris, or any OFF.
objects inside the Control Panel/VSD
Cabinet.

JOHNSON CONTROLS 3
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

ASSOCIATED LITERATURE
MANUAL DESCRIPTION FORM NUMBER
Centrifugal Chiller Long Term Storage 50.20-NM5
Equipment Pre-Startup and Startup Checklist 201.23-CL2
Installation, Operation and Maintenance, 50 Hz 201.23-NM1
Unit Replacement Parts, Style A, 50 Hz 201.23-RP1
Unit Replacement Parts, Style A, 60 Hz 201.23-RP2
Unit Replacement Parts, Style A, 50 Hz and 60 Hz 201.23-RP3
All Products - Replacement Parts Electrical Connectors 50.20-RP1
All Products - Replacement Parts Fittings 50.20-RP2

SYSTEM NOMENCLATURE

Y CI V - 0187 - S - A - 46 - V - A - A

YORK
Development Code
Air Cooled Chiller
Design Series
VSD Driven Screw
Compressor Starter - VSD

Voltage Code
Model Number 17 = 200-3-60
0187 28 = 230-3-60
0720 40 = 380-3-60
Unit Designator 46 = 460-3-60
E = High Efficiency with Standard IPLV 50 = 380/400/415-3-50
S = Standard Efficiency with Standard IPLV 58 = 575-3-60
P = Standard Efficiency with Optimized IPLV
V = High Efficiency with Optimized IPLV A = Refrigerant R-134a
B = Refrigerant R-513a

LD26906

4 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

TABLE OF CONTENTS

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY....................................................................... 11

Introduction...................................................................................................................................................... 11
Warranty.......................................................................................................................................................... 11
Safety.............................................................................................................................................................. 11
About this Manual............................................................................................................................................ 12
Misuse of Equipment....................................................................................................................................... 12

SECTION 2 - PRODUCT DESCRIPTION................................................................................................................15

SECTION 3 - RIGGING, HANDLING AND STORAGE...........................................................................................29

Lifting Weights................................................................................................................................................. 29
Delivery and Storage....................................................................................................................................... 29
Inspection........................................................................................................................................................ 29
Moving the Chiller............................................................................................................................................ 30
Unit Removal from Shipping Container........................................................................................................... 30
Lifting Using Lugs............................................................................................................................................ 30
Lifting Using Shackles..................................................................................................................................... 30

SECTION 4 - INSTALLATION.................................................................................................................................33
Location Requirements................................................................................................................................... 33
Outdoor Installations....................................................................................................................................... 33
Indoor Installations.......................................................................................................................................... 33
Location Clearances........................................................................................................................................ 33
Vibration Isolators............................................................................................................................................ 34
Shipping Braces.............................................................................................................................................. 34
Chilled Liquid Piping........................................................................................................................................ 34
Water Treatment.............................................................................................................................................. 35
Pipework Arrangement.................................................................................................................................... 36
Connection Types and Sizes........................................................................................................................... 36
Cooler Connections......................................................................................................................................... 36
Refrigerant Relief Valve Piping........................................................................................................................ 36
Ductwork Connection ..................................................................................................................................... 37
Electrical Connection....................................................................................................................................... 37
Power Wiring................................................................................................................................................... 38
Power Supply Wiring....................................................................................................................................... 38
115 VAC Control Supply Transformer.............................................................................................................. 38
Control Panel Wiring....................................................................................................................................... 38
Volts Free Contacts......................................................................................................................................... 39
System Inputs.................................................................................................................................................. 39

JOHNSON CONTROLS 5
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

TABLE OF CONTENTS (CONT'D)

SECTION 5 - COMMISSIONING.............................................................................................................................41
Preparation...................................................................................................................................................... 41
Preparation – General..................................................................................................................................... 41
First Time Start-Up.......................................................................................................................................... 42

SECTION 6 - TECHNICAL DATA............................................................................................................................51

Glycol Correction Factors................................................................................................................................ 55
Electrical Notes............................................................................................................................................... 80
Electrical Wiring Diagrams - 2 Compressor Models........................................................................................ 82
Electrical Wiring Diagrams - 3 Compressor Models........................................................................................ 96
Dimensions - 2 and 3 Compressor SI........................................................................................................... 112
Technical Data - Clearances......................................................................................................................... 132
Isolator Information for Units Shipped on or After June 15, 2008.................................................................. 133
Isolator Information for Units Shipped Before June 15, 2008........................................................................ 156
Refrigerant Flow Diagram............................................................................................................................. 161
Process and Instrumentation Diagram.......................................................................................................... 162
Component Locations................................................................................................................................... 163
Glycol System Components.......................................................................................................................... 184
Compressor Components............................................................................................................................. 186
Chiller Electronic Components...................................................................................................................... 187
Chiller Configuration Jumpers....................................................................................................................... 195
VSD Logic to Chiller Microprocessor Board RS-485 Communication Configuration Jumpers...................... 196
Maximum VSD Frequency/Model designator................................................................................................ 196

SECTION 7 - OPERATION....................................................................................................................................197
Operating Controls........................................................................................................................................ 197
Basic Operating Sequence............................................................................................................................ 198
Number of Compressors to Start................................................................................................................... 199
Minimum VSD Compressor Start / Run Frequency.......................................................................................200
Acceleration / Deceleration Rate when Starting / Stopping Compressors.................................................... 201
Standard IPLV Capacity Control.................................................................................................................... 201
Optional High IPLV Capacity Control ........................................................................................................... 203
Load Limiting Control.................................................................................................................................... 206
Flash Tank Drain and Feed Valve Controller................................................................................................. 208
Economizer Control....................................................................................................................................... 211
Condenser Fan Control................................................................................................................................. 212
VSD Temperature Control, Operation of the Coolant Pump, and VSD Cabinet Cooling Fans...................... 213
Remote Temperature Reset Control.............................................................................................................. 214
Remote Current Limit Reset Control............................................................................................................. 215
Sound Limit Control....................................................................................................................................... 217

6 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

TABLE OF CONTENTS (CONT'D)

SECTION 8 - MICROPANEL.................................................................................................................................219
VSD Operation and Controls......................................................................................................................... 219
VSD Safeties (Faults).................................................................................................................................... 223
Unit Warnings................................................................................................................................................ 229
Microboard (331-03478-xxx)......................................................................................................................... 229
Program Update............................................................................................................................................ 231
Data Logging................................................................................................................................................. 232
Unit Safeties.................................................................................................................................................. 233
System Safeties (Faults)............................................................................................................................... 235
Status Key..................................................................................................................................................... 240
Unit Data Key................................................................................................................................................ 243
System Data Keys 1 Through 4.................................................................................................................... 245
VSD Data Key............................................................................................................................................... 248
Operating Hours / Start Counter Key............................................................................................................ 250
History Key.................................................................................................................................................... 251
Setpoints Key................................................................................................................................................ 258
Program Key................................................................................................................................................. 260
Options Key................................................................................................................................................... 263
Date / Time and Schedule Keys.................................................................................................................... 266
Manual Override Key..................................................................................................................................... 270
Print Key........................................................................................................................................................ 271
Service Key................................................................................................................................................... 274
System Switches Key.................................................................................................................................... 280
Serial Number Programming......................................................................................................................... 281
Enabling Optimized High IPLV Mode............................................................................................................ 282
Unit Setup Mode............................................................................................................................................ 283
Default Programmable Values....................................................................................................................... 284
Serial Port Connections................................................................................................................................. 284
Analog Input Connections............................................................................................................................. 285
Digital Intput Connections............................................................................................................................. 287
Analog Output Connections.......................................................................................................................... 288
Digital Output Connections............................................................................................................................ 289
BACNET, MODBUS and YORKTALK 2 Communications............................................................................. 291

SECTION 9 - MAINTENANCE...............................................................................................................................305
General Requirements.................................................................................................................................. 305
Evacuating a System..................................................................................................................................... 305
R-134a Conversion Tables............................................................................................................................ 306
Maintenance Requirements for YCIV Chillers............................................................................................... 307
Troubleshooting Guide ................................................................................................................................. 308
Limited Warranty........................................................................................................................................... 310
Chilled Liquid and Suction Temperature Sensor Input Voltage .................................................................... 311
Printer Wiring................................................................................................................................................. 318
Operating Log Sheet..................................................................................................................................... 320
Recommended Spare Parts.......................................................................................................................... 324

JOHNSON CONTROLS 7
FORM 201.23-NM2

ISSUE DATE: 09/30/2019

LIST OF FIGURES
FIGURE 1 - Chiller Control System��16
FIGURE 2 - Compressor��16
FIGURE 3 - PWM Current Waveform��21
FIGURE 4 - PWM Voltage Waveform��21
FIGURE 5 - Pipework Arrangement��36
FIGURE 6 - Grooved Nozzle��36
FIGURE 7 - Flange Attachment��36
FIGURE 8 - Two Compressor Wiring Diagram With Circuit Breaker��66
FIGURE 9 - Two Compressor Wiring Diagram With Terminal Block��66
FIGURE 10 - Three Compressor Wiring Diagram With Circuit Breaker – Single Point�� 67
FIGURE 11 - Three Compressor Wiring Diagram With Terminal Block – Single Point�� 67
FIGURE 12 - Elementary Control Wiring Diagram 2 Compressor Models�� 82
FIGURE 13 - Elementary Power Wiring Diagram - YCIV0157-0267 2 Compressor Models�� 84
FIGURE 14 - Power Wiring Connection Diagram - YCIV0157-0267 2 Compressor Models�� 86
FIGURE 15 - Control Wiring Connection Diagram - YCIV0157-0267 2 Compressor Models �� 88
FIGURE 16 - Power Elementary Wiring Diagram - YCIV0157-0267 2 Compressor Models�� 91
FIGURE 17 - Control Elementary Diagram - YCIV0257-0397 3 Compressor Models�� 96
FIGURE 18 - Power Elementary Diagram - YCIV0257-0397 3 Compressor Models�� 100
FIGURE 19 - Control Wiring Connection Diagram - YCIV0257-0397 3 Compressor Models�� 102
FIGURE 20 - Power Wiring Connection Diagram - YCIV1050-1500 3 Compressor Models�� 106
FIGURE 21 - Power Elementary Diagram - YCIV0257-0397 3 Compressor Models�� 108
FIGURE 22 - Refrigerant Flow Diagram��161
FIGURE 23 - Process and Instrumentation Diagram��162
FIGURE 24 - Component Locations��163
FIGURE 25 - Control and VSD Cabinet Components��164
FIGURE 26 - Chiller Control Board, Relay Boards, Microgateway, and Optional Circuit Breaker�� 165
FIGURE 27 - Chiller Control Board, Relay Boards, and Microgateway, 2 Compressor �� 166
FIGURE 28 - Chiller Control Board, Relay Boards, and Microgateway, 3 Compressor �� 167
FIGURE 29 - VSD Logic Board��168
FIGURE 30 - VSD Logic Board (Original - Obsolete), P/N 031-02477-000�� 169
FIGURE 31 - VSD Logic Board (New), P/N 031-02507-XXX ��170
FIGURE 32 - Power Components, 2 Compressor��171
FIGURE 33 - Power Components, 3 Compressor��172
FIGURE 34 - Fan Contactors and 3T Transformer, 2 Compressor��173
FIGURE 35 - Fan Contactors, 3 Compressor��174
FIGURE 36 - VSD Components��175
FIGURE 37 - VSD Components, 2 Compressor��176
FIGURE 38 - VSD Components, 3 Compressor��177
FIGURE 39 - VSD Components, 2 Compressor��178
FIGURE 40 - VSD Components, 3 Compressor��179
FIGURE 41 - Inverter Power Components, 2 Compressor��180
FIGURE 42 - Inverter Power Components, 3 Compressor��181
FIGURE 43 - Inverter Power Components��182
FIGURE 44 - Glycol Pump and Fill Tube Locations��184
FIGURE 45 - Glycol Piping and Fill Tube Location��185
FIGURE 46 - Compressor Components��186
FIGURE 47 - New Board P/N 031-02507-000��192
FIGURE 48 - Obsolete Board P/N 031-02477-000��192
FIGURE 49 - Chiller Control (Cooling) Range��199
FIGURE 50 - Number of Compressors to Start��200
FIGURE 51 - Minimum VSD Start Frequency��200
FIGURE 52 - Minimum VSD Run Frequency��201
FIGURE 53 - Flash Tank Drain and Feed Valve Controller��208
FIGURE 54 - LED Locations��210
FIGURE 55 - Power and Comms LED's ��210

8 JOHNSON CONTROLS
FORM 201.23-NM2

ISSUE DATE: 09/30/2019

LIST OF FIGURES (CONT'D)

FIGURE 56 - Power, Comms and System Open/Close LED's��210

FIGURE 57 - Condenser Fan Locations��212
FIGURE 58 - Standard IPLV Fan Control��213
FIGURE 59 - High IPLV Fan Control��213
FIGURE 60 - Microboard 331-03478-xxx��230
FIGURE 61 - Control Board Connections��292
FIGURE 62 - Print Cable - Chiller to Serial Printer��318

JOHNSON CONTROLS 9
FORM 201.23-NM2

ISSUE DATE: 09/30/2019

LIST OF TABLES

TABLE 1 - Typical Compressor Starting Current (First Four Seconds Of Start-Up)�� 80

TABLE 2 - Voltage Utilization Range��80
TABLE 3 - Compressors and the Appropriate Jumper Positions��195
TABLE 4 - VSD Logic Board Address Jumper��196
TABLE 5 - Maximum Frequency / Model Designator Jumper��196
TABLE 6 - Fuzzy Logic Loading/Unloading vs. Error��203
TABLE 7 - Fuzzy Logic Loading/Unloading vs. Error��205
TABLE 8 - Current Limit Load Limiting/Unloading��206
TABLE 9 - Discharge Pressure Load Limiting/Unloading��207
TABLE 10 - Suction Pressure Load Limiting/Unloading��207
TABLE 11 - VSD Internal Ambient Load Limiting/Unloading��207
TABLE 12 - VSD Baseplate Temperature Load Limiting/Unloading��208
TABLE 13 - Fan Stages and Corresponding Outputs��212
TABLE 14 - VSD Operating Display Parameters��223
TABLE 15 - Flash Card Update Error XXXXX��232
TABLE 16 - Data Logging ��232
TABLE 17 - Low Differential Oil Pressure Cutout��237
TABLE 18 - Start Inhibit Sensor Thresholds��239
TABLE 19 - Sensor Min/Max Outputs��247
TABLE 20 - Setpoint Limits��259
TABLE 21 - Programmable Operating Parameters��262
TABLE 22 - Printout Types��271
TABLE 23 - Unit Setup Programmable Values��283
TABLE 24 - Serial Port Connections��285
TABLE 25 - Analog Input Connections��285
TABLE 26 - Digital Input Connections ��287
TABLE 27 - Analog Output Connections��288
TABLE 28 - Digital Output Connections��289
TABLE 29 - Minimum, Maximum and Default Values��292
TABLE 30 - Values Required for BAS Communication��293
TABLE 31 - Real Time Error Numbers��293
TABLE 32 - Bacnet and Modbus Communications Data Map��295
TABLE 33 - YorkTalk 2 Communications Data Map��301
TABLE 34 - R-134a Pressure to Saturated Temperature Conversion��306
TABLE 35 - Temperature Input Voltage Sensor (Measured Signal to Shield at the Sensor)�� 311
TABLE 36 - Outside Air Temperature Sensor Input Voltage (Measured Signal to Shield at the Sensor)�� 312
TABLE 37 - Pressure Transducer Output Voltage (Measured Signal to Return at the Transducer)�� 313
TABLE 38 - Motor Temperature Sensor Resistance (Check at the Motor)�� 314
TABLE 39 - Compressor Motor Overload Settings and Max. VSD Frequency�� 315

10 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY

INTRODUCTION
YORK YCIV0157 through 0397 chillers are manufac- All warranty claims must specify the unit model, serial
tured to the highest design and construction standards number, order number and run hours/starts. Model and
to ensure high performance, reliability and adaptability serial number information is printed on the unit identi-
to all types of air conditioning installations. fication plate.
The unit is intended for cooling water or glycol solu- The unit warranty will be void if any modification to
tions and is not suitable for purposes other than those the unit is carried out without prior written approval
specified in this manual. from Johnson Controls.
Rigging and lifting should only be done by a profes- For warranty purposes, the following conditions must
sional rigger in accordance with a written rigging and be satisfied:
lifting plan. The most appropriate rigging and lifting
method will depend on job specific factors, such as the • The initial start of the unit must be carried out
rigging equipment available and site needs. Therefore, by trained personnel from an authorized Johnson
a professional rigger must determine the rigging and Controls Service Center. See SECTION 5 - COM-
lifting method to be used, and it is beyond the scope of MISSIONING.
this manual to specify rigging and lifting details. • Only genuine YORK approved spare parts, oils,
coolants, and refrigerants must be used. Recom-
This manual contains all the information required for
mendations on spare part stocking can be found
correct installation and commissioning of the unit, to-
on Recommended Spare Parts on page 324.
gether with operating and maintenance instructions.
The manuals should be read thoroughly before at- • All the scheduled maintenance operations detailed
tempting to operate or service the unit. in this manual must be performed at the specified
times by suitably trained and qualified personnel.
All procedures detailed in the manuals, including in-
stallation, commissioning and maintenance tasks must See SECTION 9 - MAINTENANCE.
only be performed by suitably trained and qualified
• Failure to satisfy any of these conditions will au-
personnel.
tomatically void the warranty. See Limited War-
The manufacturer will not be liable for any injury or ranty on page 310.
damage caused by incorrect installation, commission-
SAFETY
ing, operation or maintenance resulting from a failure
to follow the procedures and instructions detailed in Standards for Safety
the manuals.
YCIV chillers are designed and built within an ISO
WARRANTY 9002 accredited design and manufacturing organiza-
tion.
Johnson Controls warrants all equipment and materials
against defects in workmanship and materials for a pe- The chillers comply with the applicable sections of the
riod of eighteen months from date of shipment, unless following Standards and Codes:
labor or extended warranty has been purchased as part
• ANSI/ASHRAE Standard 15, Safety Code for
of the contract.
Mechanical Refrigeration.
The warranty is limited to parts only replacement and
• ANSI/NFPA Standard 70, National Electrical
shipping of any faulty part, or sub-assembly, which has
Code (N.E.C.).
failed due to poor quality or manufacturing errors. All
claims must be supported by evidence that the failure • ASME Boiler and Pressure Vessel Code, Section
has occurred within the warranty period, and that the VIII Division 1.
unit has been operated within the designed parameters
• ARI Standard 550/590-98, Water Chilling Pack-
specified.
ages Using the Vapor Compression Cycle.

JOHNSON CONTROLS 11
FORM 201.23-NM2
SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY
ISSUE DATE: 09/30/2019

• ASHRAE 90.1 Energy Standard for Building Ex- This manual and any other document supplied with
cept Low-Rise Residential Buildings. the unit are the property of Johnson Controls which re-
serves all rights. They may not be reproduced, in whole
• ARI 370 Sound Rating of Large Outdoor Refrig-
or in part, without prior written authorization from an
eration and Air Conditioning Equipment.
authorized Johnson Controls representative.
In addition, the chillers conform to Underwriters Labo-
ratories (U.L.) for construction of chillers and provide MISUSE OF EQUIPMENT
U.L./cU.L. Listing Label.
Suitability for Application
Responsibility for Safety The unit is intended for cooling water or glycol solu-
Every care has been taken in the design and manufac- tions and is not suitable for purposes other than those
ture of the unit to ensure compliance with the safety specified in these instructions. Any use of the equip-
requirements listed above. However, the individual ment other than its intended use, or operation of the
rigging, lifting, maintaining, operating or working on equipment contrary to the relevant procedures may re-
any machinery is primarily responsible for: sult in injury to the operator, or damage to the equip-
ment.
• Personal safety, safety of other personnel, and the
machinery. The unit must not be operated outside the design pa-
rameters specified in this manual.
• Correct utilization of the machinery in accordance
with the procedures detailed in the manuals. Structural Support

ABOUT THIS MANUAL Structural support of the unit must be provided as in-
dicated in these instructions. Failure to provide proper
The following terms are used in this document to alert support may result in injury to the operator, or damage
the reader to areas of potential hazard. to the equipment and/or building.
A WARNING is given in this document
to identify a hazard, which could lead to Mechanical Strength
personal injury. Usually an instruction The unit is not designed to withstand loads or stresses
will be given, together with a brief expla- from adjacent equipment, pipework or structures. Ad-
nation and the possible result of ignoring ditional components must not be mounted on the unit.
the instruction. Any such extraneous loads may cause structural failure
and may result in injury to the operator, or damage to
A CAUTION identifies a hazard which
the equipment.
could lead to damage to the machine,
damage to other equipment and/or envi- General Access
ronmental pollution. Usually an instruc-
tion will be given, together with a brief There are a number of areas and features, which may
explanation and the possible result of be a hazard and potentially cause injury when working
ignoring the instruction. on the unit unless suitable safety precautions are taken.
It is important to ensure access to the unit is restricted
A NOTE is used to highlight additional to suitably qualified persons who are familiar with the
information, which may be helpful to potential hazards and precautions necessary for safe
you but where there are no special safety operation and maintenance of equipment containing
implications. high temperatures, pressures and voltages.

The contents of this manual include suggested best

working practices and procedures. These are issued for
guidance only, and they do not take precedence over
the above stated individual responsibility and/or local
safety regulations.

12 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY
ISSUE DATE: 09/30/2019

Pressure Systems Refrigerants and Oils

1
The unit contains refrigerant vapor and liquid under Refrigerants and oils used in the unit are generally non-
pressure, release of which can be a danger and cause toxic, non-flammable and non-corrosive, and pose no
injury. The user should ensure that care is taken during special safety hazards. Use of gloves and safety glasses
installation, operation and maintenance to avoid dam- is, however, recommended when working on the unit.
age to the pressure system. No attempt should be made The buildup of refrigerant vapor, from a leak for ex-
to gain access to the component parts of the pressure ample, does pose a risk of asphyxiation in confined or
system other than by suitably trained and qualified per- enclosed spaces and attention should be given to good
sonnel. ventilation.

Electrical Use only the refrigerant specifically designated for the

unit. Any other type of refrigerant may cause damage
The unit must be grounded. No installation or main-
to the equipment and will void the warranty.
tenance work should be attempted on the electrical
equipment without first switching power OFF, isolat- High Temperature and Pressure Cleaning
ing and locking-off the power supply. Servicing and
maintenance on live equipment must not be attempted. High temperature and pressure cleaning methods
No attempt should be made to gain access to the con- (e.g. steam cleaning) should not be used on any part
trol panel or electrical enclosures during normal opera- of the pressure system as this may cause operation of
tion of the unit. the pressure relief device(s). Detergents and solvents,
which may cause corrosion, should also be avoided.
Rotating Parts
Emergency Shutdown
Fan guards must be fitted at all times and not removed
unless the power supply has been isolated. If ductwork In case of emergency, the control panel is fitted with a
is to be fitted, requiring the wire fan guards to be re- UNIT switch to stop the unit in an emergency. When
moved, alternative safety measures must be taken to operated, it removes the low voltage 120VAC elec-
protect against the risk of injury from rotating fans. trical supply from the inverter system, thus shutting
down the unit.
Sharp Edges
The fins on the air-cooled condenser coils have sharp
metal edges. Reasonable care should be taken when
working in contact with the coils to avoid the risk of
minor abrasions and lacerations. The use of gloves is
recommended.
Frame rails, brakes, and other components may also
have sharp edges. Reasonable care should be taken
when working in contact with any components to avoid
risk of minor abrasions and lacerations.

JOHNSON CONTROLS 13
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

14 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 2 - PRODUCT DESCRIPTION

INTRODUCTION General System Description

YORK YCIV R-134a chillers are designed for water The Latitude (YCIV) Air-Cooled Chiller line combines
or glycol cooling. All units are designed to be located the best of modern screw compressor design with the 2
outside on the roof of a building or at ground level. latest technology in variable speed drives. The result
is superior control and efficiency in real world condi-
The units are completely assembled with all intercon- tions. The VSD enables slowing the speed of the com-
necting refrigerant piping and internal wiring, ready pressor to match the load on the system resulting in
for field installation. precise chilled liquid control, minimized sound, maxi-
Prior to delivery, the unit is pressure tested, evacuated, mum energy efficiency, and reduced cost of ownership.
and fully charged with refrigerant and oil in each of The VSD also provides soft starts with no electrical
the two independent refrigerant circuits. After assem- inrush. The lack of heat build-up on start also enables
bly, an operational test is performed with water flow- required off time between starts to be reduced to a pe-
ing through the cooler to ensure that each refrigerant riod of 2 minutes.
circuit operates correctly. The YCIV Air-Cooled Screw Chiller utilizes many
The unit structure is manufactured from heavy gauge, components, which are the same or nearly the same as
galvanized steel. Many external structural parts are a standard screw chiller of a similar size. This includes
coated with “Champagne” baked-on enamel powder modular frame rails, condenser, fans, compressors and
paint. This provides a finish which, when subjected evaporator.
to ASTM B117, 1000 hour, 5% salt spray conditions, The chiller consists of 2 or 3 screw compressors in a
shows breakdown of less than 1/8 in. either side of a corresponding number of separate refrigerant circuits,
scribed line (equivalent to ASTM D1654 rating of “6”). a single shell and tube DX evaporator, an air-cooled
All exposed power wiring is routed through liquid- condenser, flash tanks, drain/feed valves, oil separa-
tight, non-metallic conduit. tors, and compressor mufflers. Oil separators utilize no
moving parts and are rated for a 405 psig design work-
ing pressure. Oil cooling is accomplished by routing
oil from the oil separator through several rows of tubes
in the air cooled condenser.

JOHNSON CONTROLS 15
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

An integral liquid cooled, transistorized, PWM, Vari- Refrigerant gas is injected into the void created by the
able Speed Drive (VSD) is controlled by the chiller un-meshing of the five lobed male and seven lobed fe-
microprocessor control panel to start/stop, select com- male rotors. Further meshing of the rotors closes the
pressors to run, and select compressor speed. Power rotor threads to the suction port and progressively com-
Factor is 95% at part or full load. presses the gas in an axial direction to the discharge
port. The gas is compressed in volume and increased
The chiller microprocessor communicates with the in pressure before exiting at a designed volume at the
VSD Logic Board via a 3-wire RS-485 opto coupled discharge end of the rotor casing. Since the intake and
data link. The VSD Logic Board runs the number of discharge cycles overlap, a resulting smooth flow of
compressors required to meet the load and the com- gas is maintained.
pressors to the speed requested by the chiller micro-
processor. The rotors are housed in a cast iron compressor hous-
ing precision machined to provide optimal clearances
The basic system control architecture is shown in the for the rotors. Contact between the male and female
diagram below: rotor is primarily rolling on a contact band on each of
CHILLER CONTROL SYSTEM the rotor’s pitch circle. This results in virtually no rotor
wear and increased reliability, a trademark of the screw
INPUTS OUTPUTS
(Relay Output
compressor.
Pressure Transducers
Board)
Temperature Sensors
Level Sensor
Solenoids The MTS compressor incorporates a complete anti-
Switches
Liquid Flow
High Pressure
CONTROL
Contactors
Alarm friction bearing design for reduced power input and
PANEL
increased reliability. Separated, cylindrical, roller bear-
Pump
Start/Stop
(Chiller Control Compressor Heater
Run Status
Customer Supplied
Contacts
Board)
Evap Heater ings handle radial loads. Angular-contact ball bearings
Microprocessor handle axial loads. Together they maintain accurate ro-
User Interface
Display
&
tor positioning at all pressure ratios, thereby minimiz-
VSD
ing leakage and maintaining efficiency.
COMMUNICATIONS
Keypad
VSD Logic Board
Building Automation
SCR Trigger Board
Printer
Power Components
Modem
PWM (Speed Control)

MOTOR

LD10478

Figure 1 - CHILLER CONTROL SYSTEM

The chiller is designed to operate in ambient tempera-

tures of 0°F to 125°F (-18°C to 52°C). Capacity control
is capable of reducing chiller capacity to 10% of full
load without the need for Hot Gas Bypass. LD10481

Compressor
The direct drive semi-hermetic rotary twin-screw MTS
compressor is designed for industrial refrigeration ap-
plications and ensures high operational efficiencies
and reliable performance. Capacity control is achieved
by stepless VSD speed changes. No slide valve is re-
quired. Smooth capacity control is achieved between
10% and 100% of chiller capacity in most operating LD10482
conditions. The compressor is a positive displacement
type characterized by two helically grooved rotors, Figure 2 - COMPRESSOR
which are manufactured from forged steel. The 4 pole
motor operates at speeds up to 6000 RPM to direct
drive the male rotor, which in turn drives the female
rotor on a light film of oil.

16 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

Motor cooling is provided by suction gas from the The water nozzles are provided with grooves for me-
evaporator flowing across the motor. Redundant over- chanical couplings and should be insulated by the con-
load protection is provided using both internal thermis- tractor after pipe installation.
tor and current overload protection on all three phases.
A 300 psig (20.7 bar) waterside design working pres-
The MTS compressor is lubricated by removing oil sure option is available.
from the refrigerant using an external oil separator. The 2
pressurized oil is then cooled in the condenser coils and Two compressor chillers utilize a typical 2-pass “E”
piped back to the compressor through a removable 2.5 type evaporator with liquid inlets and suction outlets at
micron oil filter to provide compressor lubrication. The the same end. Entering chilled liquid enters the refrig-
cast iron compressor housing design working pressure erant liquid inlet end of the cooler and leaving chilled
is 450 psig (31 bar). Each chiller receives a 300 psig liquid exits at the opposite end.
(21 bar) low side and a 450 psig (31 bar) high side fac- Three compressor chillers utilize a single pass “J” type
tory test. A 350 watt (115-1-60 Hz) cartridge heater is evaporator with liquid inlets at one end and suction
located in the compressor. The heater is temperature outlets at the opposite end. Entering chilled liquid is
activated to prevent refrigerant condensation. split and half flow enters at each end of the evapora-
The following items are also included: tor with leaving chilled liquid exiting in the center of
the evaporator. “J” type evaporators have fewer, lon-
• Acoustically tuned, external discharge muffler to ger tubes than a comparable “E” type. This results in
minimize noise, while optimizing flow for maxi- a smaller diameter, longer shell. Water flow rate inter-
mum performance. nally in the evaporator is ½ of the total loop flow rate
since the flow is split between two inlets. This results
• Discharge shutoff valve.
in a low evaporator water pressure drop.
• Rain-tight terminal box.
Condenser
• Suction gas screen within the compressor hous-
ing. The fin and tube condenser coils are manufactured
from seamless, internally enhanced, high-condensing
Evaporator coefficient, corrosion-resistant copper tubes arranged
in staggered rows and mechanically expanded into cor-
The system uses a high-efficiency shell and tube type
rosion resistant aluminum alloy fins with full height fin
Direct Expansion Evaporator. Each of the two or three
collars. The condenser has a design working pressure
refrigerant circuits consists of two (2) passes with the
of 450 psig (31 bar).
chilled liquid circulating back and forth across the
tubes from one end to the other. Multiple, standard low sound, high efficiency, TEAO
motor driven fans move air through the coils. They are
The design working pressure of the cooler on the shell
dynamically and statically balanced, direct drive with
side is 150 psig (10 bar), and 235 psig (16 bar) for the
corrosion-resistant glass fiber reinforced composite
tube (refrigerant) side. The evaporator is constructed
blades molded into low-noise, full airfoil cross sec-
and tested in accordance with applicable sections of
tions, providing vertical air discharge from extended
the ASME Pressure Vessel Code, Section VII, Division
orifices for efficiency and low sound. Fans or pairs of
(1). Waterside exempt per paragraph U-1, c, (6).
fans are located in a separate compartments separated
The water baffles are fabricated from galvanized steel by “V” panels to prevent cross flow during fan cycling.
to resist corrosion. Removable heads are provided for Guards of heavy-gauge, PVC-coated galvanized steel
access to internally enhanced, seamless, copper tubes. are provided.
Water vent and drain connections are included.
The standard fan motors are high-efficiency, direct
The cooler is equipped with a thermostatically con- drive, 6-pole, 3-phase, Class- “F,” current overload
trolled heater for protection to -20°F (-29°C) ambient protected, totally enclosed (TEAO) type with double-
and insulated with 3/4 in. (19 mm) flexible closed-cell sealed, permanently lubricated ball bearings.
insulation.

JOHNSON CONTROLS 17
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

Flash Tank Feed Valve/Drain Valves Oil Separator/Oil System

A flash tank is fitted to both refrigerant circuits. The The external oil separators, with no moving parts and
flash tank is a shell type refrigerant reservoir designed designed for minimum oil carry-over, are mounted in
to sustain 2 phase refrigerant. The purpose of the flash the discharge line of the compressor. The high pressure
tank is to increase the efficiency of the system. A por- discharge gas is forced around a 90 degree bend. Oil is
tion of the liquid fed into the flash tank gases off, cool- forced to the outside of the separator through centrifu-
ing the remaining liquid in the tank another 25°F to gal action and captured on wire mesh where it drains to
35°F. Both liquid and gas exist in the flash tank. The the bottom of the oil separator and is then forced into
refrigerant gas in the flash tank is fed to the econo- the condenser.
mizer port on the compressor at a point on the rotors
approximately 1.7 x suction when the economizer so- The oil (YORK “L” oil – a POE oil used for all re-
lenoid is activated. The liquid in the tank is fed to the frigerant applications), flows from the oil separator,
evaporator. through the condenser where it is cooled, and back into
the compressor through a replaceable 0.5 micron oil
The vapor feed to the economizer port of the compres- filter at high pressure. This high pressure “oil injec-
sor is at an intermediate pressure between discharge tion” forces the oil into the compressor, where it is fed
and suction (1.7 x suction) and therefore little energy to the bearings and rotors for lubrication. After lubri-
is required to pump it back through the compressor to cating the bearings, it is injected through orifices on a
condenser pressure. This results in a very small loss to closed thread near the suction end of the rotors. The oil
system efficiency. is automatically injected because of the pressure differ-
ence between the discharge pressure and the reduced
The design working pressure of the flash tank is 450 pressure at the suction end of the rotors. This lubricates
psig (31 bar). The Drain and Feed Valves on the flash the rotors as well as provides an oil seal against leak-
tank are activated on start-up. The Feed Valve on the age around the rotors to ensure refrigerant compression
flash tank acts like a liquid line solenoid, but also func- efficiency.
tions to control the liquid level in the flash tank. The
Drain Valve functions similar to an electronic expan- The oil also provides cooling by transferring much of
sion valve (EEV). The Drain Valve controls refriger- the heat of compression from the gas to the oil, keeping
ant flow to the evaporator based on suction superheat. discharge temperatures down and reducing the chance
Both valves are stepper motor valves. An economizer for oil breakdown. Oil injected into the rotor cage
solenoid is placed between the flash tank and the econ- flows into the rotors at a point about 1.2 x suction. This
omizer port of the compressor. The economizer sole- ensures that a required minimum differential of at least
noid valve is generally activated at speeds above 90 Hz 30 PSID exists between discharge and 1.2 x suction, to
to 120 Hz, depending upon a number of other factors. force oil into the rotor case. A minimum of 10 psid (0.6
bar) is all that is required to ensure protection of the
Both valves are controlled by 2 phase drive signals compressor. The oil pressure safety is monitored as the
from a stand-alone controller in the Control. Signals difference between suction pressure and the pressure of
from sensors such as suction pressure and tempera- the oil entering the rotor case.
ture are sent to the Chiller Control Board, which in
turn sends control signals to the Drain and Feed Valve Maximum working pressure of the oil separator is 450
Controller. The control algorithm in the Chiller Con- psig (31 bar). Oil level should be above the midpoint
trol Board will attempt to control the liquid level in the of the “lower” oil sight glass when the compressor is
flash tank to 35% on the level sensor and the system running. Oil level should not be above the top of the
will fault if the flash tank level exceeds 87.5%. “upper” sight glass.
During operation, it will be noted the flash tank level Relief Valves
will typically remain between 30-40% level when the
Two relief valves are installed in each refrigerant cir-
economizer solenoid is ON. The economizer solenoid
cuit. A 325 psig relief valve is located on each flash
valve will typically be on most of the time. When the
tank and a 250 psig relief valve is located on the suc-
economizer solenoid is OFF, the liquid level will vary
tion line of the compressor near the evaporator.
greatly as the Drain and Feed Valves directly affect the
level as they open and close.

18 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

Oil Cooling
Oil cooling is provided by routing oil from the oil sepa- Current transformers sense each phase of motor cur-
rator through several of the top rows of the condenser rent, and send corresponding signals to the Chiller
coils and back to the compressor. Logic Board. Current monitoring protects the com-
pressor motors from damage due to low motor current,
Capacity Control high motor current, short circuit current, single phas- 2
When cooling is needed, one or more compressors, as ing, and compressor overload.
determined by the system microprocessor based on de-
Short Circuit Withstand Rating of the chiller electrical
viation from setpoint, will start at minimum speed with
enclosure is 30,000 Amps for standard terminal block
low inrush current. Variable speed operation of the
connection. Ratings are in accordance with UL508C.
compressor reduces the capacity and allows smooth
A Circuit Breaker Option can be added to increase the
balancing of the compressor capacity with the cooling
Short Circuit Withstand Rating to 200/230 V equals
load.
100,000 A, 380/460 V equals 65,000 A, and 575 V
Capacity control is accomplished by varying the num- equals 42,000 A.
ber of compressors and the speed of the compressors
with the VSD to promote stable, smooth, and precise Microprocessor and VSD Controls
loading/unloading. Microprocessors on the Chiller Control Board and
VSD Logic Board control starting, stopping, loading,
Hot Gas Bypass is not required with VSD control of unloading, safeties, and chilled liquid temperature
the compressors. control. Chilled liquid control decisions are a function
The chiller is available with Standard IPLV or High of temperature deviation from setpoint and the rate of
IPLV software (EPROM). High IPLV software optimiz- change of temperature.
es the performance of the chiller capacity and fan con- The standard controls include:
trols. High IPLV chillers also require additional factory
programming. • Brine Chilling.

Power and Control Panel • Thermal Storage.

All controls and the VSD are factory-wired and func- • Run Signal Contacts.
tion tested. The panel enclosures are designed to • Unit Alarm Contacts.
NEMA 3R (IP65) rating and are manufactured from
powder-painted steel with hinged, latched, and gasket • Chilled Liquid Pump Control.
sealed outer doors with wind struts for safer servicing. • Automatic reset after power failure.
The power and micro control panels are combined into • Automatic system optimization to match operat-
a single control/power cabinet and include: ing conditions.
• Compressor VSD Controls. Remote cycling, optional current limiting, optional
• Chiller Microprocessor Controls. temperature setpoint reset, and optional remote sound
limit can be accomplished by connecting user-supplied
• Fan Controls.
signals to the microprocessor.
• All Other Chiller Controls.
Unit operating software is stored in non-volatile mem-
The Display and keypad are accessible through an ac- ory. Field programmed setpoints are retained in lithium
cess door without opening the main doors to the elec- battery backed real time clock (RTC) memory for 10
trical cabinet. years.
Each Power Compartment Contains Display
Incoming single point power is standard utilizing ei- The display consists of a liquid crystal 2 line by 40
ther a lockable circuit breaker or terminal block, 115 characters per line display, with backlighting for out-
VAC control transformer, VSD, fan contactors, ON/ door viewing of operating parameters and program
OFF unit switch, microcomputer keypad and display, points.
Chiller Control and VSD Logic Boards, and relay
boards.
JOHNSON CONTROLS 19
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

Parameters are displayed in 5 languages in either Eng- Keypad

lish (°F and psig) or Metric (°C and bar) units, and for An operator keypad allows complete control of the
each circuit, the following items can be displayed: system from a central location. The keypad utilizes an
• Entering and leaving chilled liquid, and ambient overlay to allow use in 5 languages. The keypad is a
temperature. color-coded, 36 button, sealed keypad with keys for
Display, Entry, Setpoints, Clock, Print, Program, Unit
• Day, date and time. Daily start/stop times. Holi- ON/OFF and other functions. Details on a few of the
day and Manual Override status. keys follow:
• Compressor operating hours and starts. Automatic Status – Allows viewing present unit or system status
or manual lead/lag. Lead compressor identifica- displayed by the microprocessor.
tion.
Entry – Numeric keypad and supporting keys used to
• Run permissive status. Compressor run status.
confirm Setpoint changes, cancel inputs, advance day,
• Anti-recycle timers. and change AM/PM.
• System suction (and suction superheat), discharge Setpoints – For setting chilled liquid temperature,
(and discharge superheat), and oil pressures and chilled liquid range, remote reset temperature range.
temperatures.
Date/Time – Used to set time, daily or holiday start/
• Percent full load compressor motor current and stop schedule, manual override for servicing, and
average motor current. Compressor motor speed sound limiting schedule.
(frequency).
Print – Used to display or print operating data or sys-
• Cutout status and setpoints for supply chilled liq- tem fault shutdown history for last ten faults. Printouts
uid temperature, low suction pressure, high dis- are generated through an RS-232 port via a separate
charge pressure and temperature, high oil tem- printer.
perature, low ambient, and low leaving liquid
temperature. Program – For setting low leaving liquid temperature
cutout, average motor current limit, and pulldown de-
• Unloading limit setpoints for high discharge pres- mand limit.
sure and compressor motor current.
Displays are also provided for programming low am-
• Status of evaporator heater, condenser fans, load/
bient cutout, low suction pressure cutout, superheat
unload timers, and chilled water pump.
setpoint, etc., under the PROGRAM key.
• “Out of range” message.
Unit Switch
• Up to 10 fault shutdown histories.
A master UNIT switch allows activation or de-activa-
tion of the chiller system. Separate system switches
for controlling each system are provided as part of the
chiller control panel keypad.

20 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

Variable Speed Drive (VSD)

The VSD (variable speed drive) is a liquid cooled, tran- The power section of the drive is composed of four ma-
sistorized, PWM inverter, which provides speed con- jor blocks consisting of an AC to DC rectifier section
trol to vary the speed of 2, 3 or 4 compressor motors. with accompanying pre-charge circuit, a DC link filter
The VSD changes the duration of the voltage pulses section, a three phase DC to AC inverter section, and
supplied to the motor to enable control of compressor an output suppression network. 2
speed to match the system load. A PWM generator, on
the VSD Logic Board, with a switching frequency of The AC to DC rectifier utilizes a semi-converter formed
3125 Hz modulates the voltage signal to provide a rela- by the connection of three SCR/diode modules (1SCR
tively pulses constant V/F ratio. In some cases, the V/F through 3SCR) in a three phase bridge configuration.
ratio is slightly modified to provide additional torque The modules are mounted on a liquid cooled heatsink.
to the motor. Sample 3 phase current waveforms are Use of the semi-converter configuration permits im-
shown in Figure 3 on page 21 to show the sinusoidal plementation of a separate pre-charge circuit to limit
characteristics of the current drawn by the compressor the flow of current into the DC link filter capacitors
motors. when the drive is switched on and it also provides a
fast disconnect from the power mains when the drive is
switched off. When the drive is turned off, the SCR's in
the semi-converter remain in a non-conducting mode
and the DC link filter capacitors remain uncharged.
When the drive is commanded to run, the DC link filter
capacitors are slowly charged via the semi-converter.
The SCR’s are then gated fully on.
Three power fuses (1FU - 3FU), an optional circuit
breaker (1SW) and a standard 5% impedance minimum
3-phase line reactor connect the AC to DC converter to
the incoming power. Very fast semiconductor power
fuses are utilized to ensure that the SCR/diode module
LD10479
packages do not rupture if a catastrophic failure were
Figure 3 - PWM CURRENT WAVEFORM to occur on the DC link. The SCR Trigger Board pro-
vides the gating pulses for the SCR’s as commanded by
A Sample PWM voltage waveforms is shown in Figure the VSD Logic Board.
4 on page 21. The pulses near the sides of the rectan-
gular groups of waves are notably narrower, represent- The DC Link filter section of the drive consists of a
ing the lower voltage of a sinusoidal waveform as it group of electrolytic filter capacitors (C1-C6). This
rises or falls from the “0” crossing. capacitor bank effectively smoothes the ripple voltage
from the AC to DC rectifier while simultaneously pro-
viding a large energy reservoir for use by the DC to
AC inverter section of the drive. In order to achieve
the required voltage capability for the capacitor por-
tion of the filter, filter capacitor “banks” are formed by
connecting two groups of parallel capacitors in series
to form a capacitor “bank”. In order to assure an equal
sharing of the voltage between the series connected ca-
pacitors and to provide a discharge means for the ca-
pacitor bank when the VSD is powered off, “bleeder”
resistors (1RES and 2RES) are connected across the
capacitor banks.
LD10480
Figure 4 - PWM VOLTAGE WAVEFORM

JOHNSON CONTROLS 21
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

The DC to AC inverter section of the VSD serves to tance) between the DC link filter capacitors located on
convert the rectified and filtered DC back to AC at the the output phase bank assemblies and the VSD Logic
magnitude and frequency commanded by the VSD Board. It provides the means to sense the positive, mid-
Logic Board. The inverter section is actually composed point and negative connection points of the VSD’s DC
of two to four identical inverter output phase assem- link without applying high voltage to the VSD Logic
blies. These assemblies are in turn composed of 3 pairs Board. A Current transformer is included on each out-
of Insulated Gate Bipolar Transistor (IGBT) modules put phase assembly to provide motor current informa-
mounted to a liquid cooled heatsink, and a IGBT Gate tion to the VSD Logic Board.
Driver Board, which provides the ON and OFF gating
pulses to the IGBT’s as determined by the VSD Logic ACCESSORIES AND OPTIONS
Board. In order to minimize the parasitic inductance
Sound Reduction Options
between the IGBT’s and the capacitor banks, copper
plates, which electrically connect the capacitors to one The standard chiller has fans that operate at normal
another and to the IGBT’s are connected together using speed, no compressor enclosure, and is typically used
a “laminated bus” structure. in non-sensitive sound areas such as industrial areas or
locations with loud traffic background noise. One or
This “laminated bus” structure is a actually composed more of the following sound reduction options may be
of a pair of copper bus plates with a thin sheet of in- employed by the system designer as normally gener-
sulating material acting as the separator/insulator. The ated machine noise is considered in the overall project
“laminated bus” structure forms a parasitic capacitor, design.
which acts as a small valued capacitor, effectively can-
celing the parasitic inductance of the bus bars them- Ultra Quiet Fans
selves. To further cancel the parasitic inductances, a With this option, the basic chiller is equipped with spe-
series of small film capacitors are connected between cially designed fans and motors to provide lower sound
the positive and negative plates of the DC link. levels and retain appropriate airflow. The result is re-
The VSD output suppression network is composed duced fan generated noise with minimal effect on the
of a series of capacitors and resistors connected in a chiller capacity or efficiency at standard AHRI condi-
three phase delta configuration. The parameters of the tions. (Factory-mounted)
suppression network components are chosen to work
in unison with the parasitic inductance of the DC to Two-Speed Fans
AC inverter sections in order to simultaneously limit With this option, the basic chiller is equipped with fans
both the rate of change of voltage and the peak voltage designed with two operating speeds. At high ambient
applied to the motor windings. By limiting the peak conditions the fans operate at the normal speed with
voltage to the motor windings, as well as the rate-of- sound levels equivalent to Ultra Quiet Fans. As the am-
change of motor voltage, we can avoid problems com- bient temperature falls, the fans automatically reduce
monly associated with PWM motor drives, such as to slow speed reducing sound levels. If very low sound
stator-winding end-turn failures and electrical fluting is required at all ambient conditions normal fan speed
of motor bearings. can be inhibited. (Factory-mounted)
The VSD is cooled by a propylene glycol cooling Reduced Sound Option
loop. The loop utilizes a glycol pump, which pumps
With this option the chiller is equipped with an unlined
glycol through the VSD heatsinks to cool the power
compressor enclosure. This option is typically used for
components. The glycol is then circulated through the
daytime operation where background noise is lower
condenser to reject the heat from the VSD. The cooled
than normal city traffic etc. (Factory-mounted)
glycol is then circulated back through the loop.
Various ancillary sensors and boards are used to send Low Sound Option
information back to the VSD Logic Board. Each IGBT This option is only available with the selection of Ultra
Power Module within the DC to AC inverter section Quiet Fans or Two-Speed Fans. The chiller is equipped
contains a thermistor heatsink temperature sensor to with an acoustically lined compressor enclosure. This
provide temperature information to the VSD Logic option is typically for locations near residential ar-
Board. The Bus Isolator board utilizes three resistors eas, hotels, or hospitals etc., where background noise
on the board to provide a “safe” impedance (resis- is limited. When paired with the Two-Speed Fan op-

22 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

tion the unit can operate at normal speed during the Pre-Coated Fin Condenser Coils
day, when background noise levels are noticeable, and The air-cooled condenser coils are constructed of ep-
at low speed in the evening and at night when back- oxy-coated aluminum fins. This can provide corrosion
ground levels are lower. (Factory-mounted) resistance comparable to copper-fin coils in typical
seashore locations. Either these or the post coated coils
SilentNight™
(below), are recommended for units being installed at 2
Standard variable speed compressors result in a chiller the seashore or where salt spray may hit the unit.
system that has lower part load sound values than con-
ventional air-cooled chillers. Over 99% of chiller op- Post-Coated Epoxy Dipped Condenser Coils
erating hours occur when building loads are less than The unit is built with dipped-cured epoxy condenser
design and/or ambient temperatures are less than de- coils. This is another choice for seashore and other cor-
sign. As a result, all YCIV model chillers will operate rosive applications (with the exception of strong alka-
with less than full load sound output nearly all the time. lis, oxidizers and wet bromine, chlorine and fluorine in
This is especially important on evenings and weekends concentrations greater than 100 ppm).
when neighbors are home the most. Due to time of day
based sound regulations it may be desirable to force Copper Fin Condenser Coils
the chiller to a lower sound level on demand. The Si-
The unit constructed with copper tube condenser coils,
lentNight™ control option provides a control input to
which have copper fins. (This is not recommended for
limit sound output of the chiller based on time of day.
units in areas where they may be exposed to acid rain.)
This feature is programmable at the chiller panel or can
be controlled remotely via signal (4 mA to 20 mA or 0 Protective Chiller Panels
VDC to 10 VDC) from a BAS system.
Wire Panels (Full Unit)
High Static Fans - (400 V / 50 Hz and 380 V / UV stabilized black polyvinyl chloride coated, heavy
60 Hz) gauge, welded wire mesh guards mounted on the exteri-
Condenser fans with higher power motors suitable for or of the unit. Protects condenser coil faces and prevents
high external static pressure, up to 100 Pa (0.4 in. wa- unauthorized access to refrigerant components (com-
ter), across condenser coils. Select this option if ad- pressors, pipes, cooler, etc.), yet provides free air flow.
ditional air-flow resistance may be present due to flow This can cut installation cost by eliminating the need for
restrictions such as field installed ducts, filters, sound- separate, expensive fencing. (Factory-mounted)
enclosures etc. (Factory-mounted)
Louvered Panels (Condenser Coils Only)
High Airflow Fans - (400 V / 50 Hz and 380 V / Louvered panels, painted the same color as the unit,
60 Hz) are mounted over the exterior condenser coil faces on
Condenser fans with airfoil type blades and high power the sides of the unit to visually screen and protect coils.
motors providing extra airflow across coils. In some (Factory-mounted)
chiller configurations, this option can provide an in-
crease in chiller capacity. Contact your local Johnson Louvered Panels (Full Unit)
Controls representative for more information. (Facto- Louvered panels, painted the same color as the unit,
ry-mounted) enclose the unit to protect condenser coils from inci-
dental damage, visually screen internal components,
Condenser Coil Protection and prevent unauthorized access to internal compo-
Standard condenser coil construction materials include nents. (Factory-mounted)
aluminum fins, copper tubes, and galvanized tube sup-
ports for generally good corrosion resistance. However, Louvered (Condensers)/Wire Panels
these materials are not adequate for all environments. (Mechanical)
The system designer can take steps to inhibit coil cor- Louvered panels, painted the same color as the unit,
rosion in harsh applications and enhance equipment are mounted on external condenser coil faces. Heavy
life by choosing from these options based on project gauge, welded wire-mesh, coated to resist corrosion,
design parameters and related environmental factors. around base of machine to restrict unauthorized access.
(Factory-mounted) (Factory-mounted)

JOHNSON CONTROLS 23
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

Evaporator Options Chicago Code Relief Valve

Double Thick 1 1/2 in. Insulation Special relief valves per Chicago code. (Factory-
mounted)
Double thickness insulation is provided. (Factory-
mounted) Pressure Relief (CE/PED) Service Valve Kit
Raised Face Flange Accessory Each relief valve is mounted on a sealable ball valve to
aid maintenance. (Factory-mounted)
Used for cooler nozzles:
• 150 psig (10.3 barg), welded flanges (field kit, Circuit Breaker
matching pipe flange by contractor). Power panel will come equipped with a factory mount-
ed circuit breaker at the point of incoming single or
• 150 psig (10.3 barg) companion weld flanges
multi-point connections that provides the following:
(field kit - not available with 460 V units).
• 150 psig (10.3 barg), ANSI/AWWA C-606 cou- • A means to disconnect power mounted on chiller.
plings (field kit, matching pipe flange by contrac- • Circuit breaker(s) sized to provide the motor
tor). branch circuit protection, short circuit protection
and ground fault protection for the motor branch-
Opposite Handed Evaporator Water circuit conductors, the motor control apparatus
Connections and the motors. (Chiller mounted circuit breaker
Easily installed standard water connections are on the option sized for branch circuit protection elimi-
left-hand side of the unit, when viewed from the con- nates the need to provide a separate ‘line of sight’
trol panel end. disconnect and separate branch circuit protection
device.)
General Options • A lockable operating handle that extends through
Flow Switch Accessory power panel door. This allows power to be discon-
nected without opening any panel doors.
Vapor proof SPDT, NEMA 3R switch, 150 psig (10.3
barg) DWP, 20°F to 250°F (-7°C to 121°C) with 1 in. • A Short Circuit Withstand Rating of 65,000 A
NPT (IPS) connection for upright mounting in hori- when the chiller electrical enclosure when using
zontal pipe (This flow switch or equivalent must be circuit breaker option is 380 V, 400 V, and 460 V.
furnished with each unit). (Field-mounted) Rated IAW UL508.

Differential Pressure Switch Vibration Isolation

Alternative to the paddle-type flow switch. Range is 3 Elastomeric Isolation
psig to 45 psig (0.2 barg to 3 barg) with 1/4 in. NPTE This option is recommended for normal installations. It
pressure connections. (Field-mounted) provides very good performance in most applications
for the least cost. (Field-mounted)
Building Automation System Interface
Chiller will accept 4 mA to 20 mA or 0 VDC to 10 One Inch Spring Isolators
VDC input to reset the leaving chilled liquid tempera- Spring and cage type isolators for mounting under the
ture. (Factory-mounted) unit base rails. They are level adjustable. Nominal de-
flection is 1 in. and may vary slightly by application.
Multi-Unit Sequence Control (Field-mounted)
Separate sequencing control center provided to permit-
ting control of up to eight chillers in parallel based on Two Inch Seismic Spring Isolators
mixed liquid temperature (interconnecting wiring by Restrained Spring-Flex Mounting isolators incorporate
others). (Field-mounted) a rugged welded steel housing with vertical and hori-
zontal limit stops. Housings designed to withstand a
Service Isolation Valve minimum 1.0g accelerated force in all directions up to
Service suction isolation valve added to unit for each 2 in. (51mm). The deflection may vary slightly by ap-
refrigerant circuit. (Factory-mounted) plication. They are level adjustable. (Field-mounted)

24 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

COMPLETE PIN NUMBER DESCRIPTION

FEATURE DESCRIPTION OPTION DESCRIPTION
CONTRACT Contract Number NUM Contract Number = {num}
ORDER Order Quantity QTY Order quantity = {ord_qty}
N USA origin not required
USA USA Origin
Y USA origin required 2
LBS Crane/Rigging Shipping Weight = {lb}
SHIP WT Shipping Weight
KG Crane/Rigging Shipping Weight = {kg}
MODEL Model (PIN 1-4) YCIV YCIV
0157 0157
0177 0177
0187 0187
0197 0197
0207 0207
0227 0227
Nominal Capacity
CAP 0247 0247
(PIN 5-8)
0267 0267
0287 0287
0307 0307
0327 0327
0357 0357
0397 0397
S Standard Efficiency, Standard IPLV
P Standard Efficiency, Optimized IPLV
UNIT Unit Designator (PIN 9) E High Efficiency/High Ambient Unit, Standard IPLV
V High Efficiency/High Ambient Unit, Optimized IPLV
H Standard Efficiency, Optimized IPLV (ARI Only)
REF. Refrigerant (PIN 10) A R-134a
17 200/3/60
28 230/3/60
40 380/3/60
VOLTS Voltage (PIN 11, 12)
46 460/3/60
50 380-415/3/50
58 575/3/60
STARTER Starter (PIN 13) V Variable Speed Drive
A Design Series A
DESIGN Design Series (PIN 14)
K Design Series K
DEV Modification Level (PIN 15) B Mod Level B
SX SP Supply TB
BX SP Circuit Breaker w/Lockable Handle
POWER Power Fld (PIN 16, 17) SS SP Supply TB w/Ind. Sys. Disconnect Switches
CS SP Circuit Breaker w/Ind. Sys. Disconnect Switches
QQ Special Power Option
Control Transformer T Control Transformer required
TRANS
(PIN 18) Q Special Transformer or Power Strip required
X No Option Required
Convenience Outlet Convenience Outlet, 115 V GFI
PFC O
(PIN 19) (Customer Powered)
Q Special quote
X No option required
AMB PIN 20
Q Special quote
X No Selection
L LON E-Link
BAS BAS Interface (PIN 21)
S SC-EQ Board
Q Special Quote

JOHNSON CONTROLS 25
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

COMPLETE PIN NUMBER DESCRIPTION (CONT'D)

FEATURE DESCRIPTION OPTION DESCRIPTION

X English LCD and Keypad Display (std)
S Spanish LCD and Keypad Display
F French LCD and Keypad Display
G German LCD and Keypad Display
LCD LCD (PIN 22)
I Italian LCD and Keypad Display
P Portuguese LCD and Keypad Display
H Hungarian LCD and Keypad Display
L Polish LCD and Keypad Display
X No option required
RDOUT Silent Night (PIN 23) N Silent Night sound limiting control option
Q Special quote
L N. American Safety Code (cUL/cETL)
SAFETY Safety Code (PIN 24) C CE listing
Q Special Safety Code
X No option required
SENSOR PIN 25
Q Special quote
X No Pump Control required
PUMP Pump Control (PIN 26)
Q Special Pump Control required
X No Remote Control Panel required
REMOTE Remote Ctrl Panel (PIN 27) O OptiView Remote Control Panel required
Q Special Remote Control Panel required
X No Sequence Kit required
SEQ Sequence Kit (PIN 28) S Sequence Control & Automatic Lead Transfer = {seq}
Q Special Sequence Kit required
NUM Leaving Water Temp. = {temp} degrees
TEMP Water Temp (PIN 29, 30)
QQ Special LWT requirements
X No Chicago Code Kit required
C Chicago Code Kit required
S Service Isolation Valve
CHICAGO Chicago Code Kit (PIN 31) B Both Isolation Valve and Chicago Code
R Dual Pressure Relief
G Dual Pressure Relief & Suction Service Isolation
Q Special Chicago Code Kit required
X Standard Valves required
VALVES Valves (PIN 32)
Q Special Optional Valves required
X No option required
HGBP PIN 33
Q Special quote
X No option required
GAUGE PIN 34
Q Special quote
X No option required
OVERLOAD PIN 35
Q Special quote
X No option required
PIN36 PIN 36
Q Special quote
H Compressor Crankcase Heaters
HTR Crankcase Heater (PIN 37)
Q Special quote
X 150 psig DWP
DWP DWP (PIN 38) 3 300 psig DWP
Q Special DWP
X 3/4 in. Cooler Insulation
INS Insulation (PIN 39) D 1 1/2 in. Cooler Insulation
Q Special Cooler Insulation

26 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

COMPLETE PIN NUMBER DESCRIPTION (CONT'D)

FEATURE DESCRIPTION OPTION DESCRIPTION
X No Flanges required
W Weld Flange Kit required
V Grooved Flange Kit required
FLANGES Flanges (PIN 40)
M Weld Flange with Mating Flange 2
F Grooved Flange with Welded Mating Flange
Q Special Flanges required
X No Flow Switch required
S One Flow Switch required
T Two Flow Switches required
U Three Flow Switches required
FLOW Flow Switch (PIN 41)
D One Differential Pressure Switch required
E Two Differential Pressure Switches required
F Three Differential Pressure Switches required
Q Special Switch required
A ASME Pressure Vessel Codes
VESSEL Vessel Codes (PIN 42) E PED Pressure Vessel Code
Q Special Pressure Vessel Codes
X Standard Cooler
CLR Cooler (PIN 43) R Remote Cooler
Q Special Cooler requirements
L Handed cooler left, view from control panel end
PIN44 Connections (PIN 44) R Handed cooler right, view from control panel end
Q Special quote
X Aluminum Coils
C Copper Fin Coils
B Pre-Coated Fin Coils
COILS Coils (PIN 45)
P Post-Coated Dipped Coils
E Pre-coated Epoxy Non-slit ripple fins
Q Special Coils
X Partial Heat Recovery not required
H Partial Heat Recovery required
HEAT Heat Recovery (PIN 46)
D Desuperheater
Q Special quote
X TEAO Fan Motors
FANMOTORS Fan Motors (PIN 47)
Q Special Fan Motors
X No Enclosure Panels required
1 Wire (Full Unit) Encl Panels (factory)
2 Wire (Full Unit) Encl Panels (field)
3 Wire/Louvered Encl Panels (factory)
4 Wire/Louvered Encl Panels (field)
PANEL Enclosure Panels (PIN 48)
5 Louvered (cond only) Encl Panels (factory)
6 Louvered (cond only) Encl Panels (field)
7 Louvered (full unit) Encl Panels (factory)
8 Louvered (full unit) Encl Panels (field)
Q Special Enclosure Panels required
X No Sound Enclosure required
Acoustical arrgt R Reduced Noise
ACOUSTIC
(PIN 49) N Low Noise
Q Special Sound Enclosure required

JOHNSON CONTROLS 27
FORM 201.23-NM2
SECTION 2 - PRODUCT DESCRIPTION
ISSUE DATE: 09/30/2019

COMPLETE PIN NUMBER DESCRIPTION (CONT'D)

FEATURE DESCRIPTION OPTION DESCRIPTION
X Base, Material and Witness Documents
A Base Documents
PIN 50 PIN 50 B Base and Material Documents
M Base and Witness Documents
Q Special Quote
X No option required
PIN 51 PIN 51
Q Special quote
X Standard Low Sound Fans
L Ultra Quiet Fans
FANS Fans (PIN 52) H High Static Fans
T Two Speed Fans
V VSD Fans
Overspray Paint X No Final Overspray Paint required
PAINT
(PIN 53) Q Special Final Overspray Paint required
X No Vibration Isolators required
1 1 in. Deflection Isolators required
ISOL Isolators (PIN 54) S Seismic Isolators required
N Neoprene Pad Isolators required
Q Special Vibration Isolators required
WARRANTY Warranty (PIN 55) For Marketing Purposes
REFRIGERANT WTY Refrigerant Wty (PIN 56) For Marketing Purposes
X No Containerization Required with Shipping Bag
Buy American Act Compliance with Shipping
A
Bag
Both Buy America Act Compliance and Contain-
B
er Shipped without Shipping Bag (Factory Prep)
Container Shipped without Shipping Bag (Fac-
C
tory Load US Port)
Ship Instructions
SHIP Container Shipped without Shipping Bag (Fac-
(PIN 57) M
tory Load Mexico Port)
No Containerization Required without Shipping
N
Bag
Container Shipped without Shipping Bag (Fac-
P
tory Prep)
Buy America Act Compliance without Shipping
U
Bag
PIN58 PIN 58 For Marketing Purposes
X No option required
PIN59 PIN 59
Q Special quote
X No option required
PIN60 PIN 60
Q Special quote
MFG Plant of Mfg (PIN 61) R Plant of Manufacture - Monterrey
MEX Monterrey
LOC Mfg Location
SAT San Antonio
CV YorkWorks configuration version {cv}
YW YorkWorks Version
UV YorkWorks upload version {uv}
SQ Special Quote Q Special quote

28 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 3 - RIGGING, HANDLING, AND STORAGE

LD19197

Rigging and lifting should only be done by a professional rigger in accordance with a written rig-
ging and lifting plan. The most appropriate rigging and lifting method will depend on job specific
factors, such as the rigging equipment available and site needs. Therefore, a professional rigger
must determine the rigging and lifting method to be used, and it is beyond the scope of this manual
to specify rigging and lifting details.

LIFTING WEIGHTS
Refer to the unit nameplate for unit shipping weight. • The condensers should be covered to protect the
Note that weight may vary depending on unit configu- coils and fins from potential damage and corrosion,
ration at the time of lifting. particularly where building work is in progress.

DELIVERY AND STORAGE • The unit should be stored in a location where there
is minimal activity in order to limit the risk of ac-
To ensure consistent quality and maximum reliability, cidental physical damage.
all units are tested and inspected before leaving the fac-
tory. Units are shipped completely assembled and con- • To prevent inadvertent operation of the pressure
taining refrigerant under pressure. Units are shipped relief devices the unit must not be steam cleaned.
without export crating unless crating has been speci- • It is recommended that the unit is periodically in-
fied on the Sales Order. spected during storage.
If the unit is to be put into storage, prior to installation,
the following precautions should be observed: INSPECTION
• The chiller must be “blocked” so that the base is Remove any transit packing and inspect the unit to en-
not permitted to sag or bow. sure that all components have been delivered and that
• Ensure that all openings, such as water connec- no damage has occurred during transit. If any damage
tions, are securely capped. is evident, it should be noted on the carrier’s freight bill
and a claim entered in accordance with the instructions
• Do not store where exposed to high ambient air
given on the advice note.
temperatures that may exceed relief valve set-
tings. Refer to Long-Term Storage Requirement Major damage must be reported immediately to your
- Field Preparation (Form 50.20-NM7). local Johnson Controls representative.

JOHNSON CONTROLS 29
FORM 201.23-NM2
SECTION 3 - RIGGING, HANDLING, AND STORAGE
ISSUE DATE: 09/30/2019

MOVING THE CHILLER LIFTING USING LUGS

Prior to moving the unit, ensure that the installation Units are provided with lifting holes in the base frame
site is suitable for installing the unit and is easily ca- which accept the accessory lifting lug set as shown in
pable of supporting the weight of the unit and all as- the figure below. The lugs (RH and LH) should be in-
sociated services. serted into the respective holes in the base frame and
The unit must only be lifted by the base turned so that the spring loaded pin engages into the
frame at the points provided. Never move hole and the flanges on the lug lock behind the hole.
the unit on rollers, or lift the unit using a The lugs should be attached to the cables/chains using
forklift truck. shackles or safety hooks.
CORRECT INCORRECT

LUG
LIFTING HOLE
Care should be taken to avoid damaging the condenser LUG
IN BASE FRAME FLANGE
cooling fins when moving the unit. FLANGE

UNIT REMOVAL FROM SHIPPING LOCKING PIN

CONTAINER
LIFTING HOLE
LOCKING PIN IN BASE FRAME
1. Place a clevis pin into the holes provided at the
end of each base rail on the unit. Attach chains or
LUG
nylon straps through the clevis pins and hook onto
a suitable lift truck for pulling the unit out of the
container.
2. Slowly place tension on the chains or straps until LOCKING
PIN
the unit begins to move and then slowly pull the
unit from the container. Be sure to pull straight so FLANGE

the sides do not scrape the container. LD19197b

3. Place a lifting fixture on the forks of the lift truck

and reattach the chain or strap. Slightly lift the LIFTING USING SHACKLES
front of the unit to remove some weight from the The shackles should be inserted into the respective
floor of the container. Continue pulling the unit holes in the base frame and secured from the inside.
with an operator on each side to guide the lift
truck operator. Use spreader bars to avoid lifting chains hitting the
chiller. Various methods of spreader bar arrangements
4. Pull the unit until the lifting locations are outside may be used, keeping in mind the intent is to keep the
of the container. Place 4 X 4 blocks of wood under unit stable and to keep the chains from hitting the chill-
the base rails of the unit. Gently rest the unit on er and causing damage.
the blocks and remove the chains and lift truck.
Never lift the chiller using a forklift or by hooking to
5. Attach lifting rigging from the crane and slowly
the top rails. Use only the lifting holes provided.
complete the removal from the container then lift
up and away. Lifting Instructions are placed on a label on the chiller
and on the shipping bag.

LD19197a

30 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 3 - RIGGING, HANDLING, AND STORAGE
ISSUE DATE: 09/30/2019

UNIT RIGGING

2 COMPRESSOR

3 COMPRESSOR

#4
3
#5

#3
#4
#2

#3
#1

#1
LD18957

LIFT POINTS DIMENSIONS TAKEN FROM (NOT ALL POINTS ON UNITS)

2 COMPRESSOR MODELS
#1 #2 #3 #4 #5
60 HZ EFF
INCH METRIC INCH METRIC INCH METRIC INCH METRIC INCH METRIC
0157 HIGH Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 216.7 Y = 5505 --- --- --- ---
0157 STD Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 216.7 Y = 5505 --- --- --- ---
0177 HIGH Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 224.7 Y = 5708 --- --- --- ---
0177 STD Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 216.7 Y = 5505 --- --- --- ---
0187 HIGH Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 224.7 Y = 5708 --- --- --- ---
0187 STD Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 224.7 Y = 5708 --- --- --- ---
0197 HIGH Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 224.7 Y = 5708 --- --- --- ---
0207 STD Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 224.7 Y = 5708 --- --- --- ---
0207 HIGH Y = 33.3 Y = 846 Y = 92.7 Y = 2355 Y = 180.7 Y = 4590 Y = 284.9 Y = 7235 --- ---
0227 HIGH Y = 33.3 Y = 846 Y = 92.7 Y = 2355 Y = 180.7 Y = 4590 Y = 284.9 Y = 7235
0227 STD Y = 33.3 Y = 846 Y = 136.7 Y = 3473 Y = 224.7 Y = 5708 --- --- --- ---
0247 STD Y = 33.3 Y = 846 Y = 92.7 Y = 2355 Y = 180.7 Y = 4590 Y = 284.9 Y = 7235 --- ---
0247 HIGH Y = 33.3 Y = 846 Y = 92.7 Y = 2355 Y = 180.7 Y = 4590 Y = 284.9 Y = 7235 --- ---
0267 STD Y = 33.3 Y = 846 Y = 92.7 Y = 2355 Y = 180.7 Y = 4590 Y = 284.9 Y = 7235 --- ---
3 COMPRESSOR MODELS
#1 #2 #3 #4 #5
60 hz EFF
INCH METRIC INCH METRIC INCH METRIC INCH METRIC INCH METRIC
0267 HIGH Y = 33.2 Y = 843.8 Y = 141.1 Y = 3584.8 Y = 238.6 Y = 6061.3 Y = 357 Y = 9067.4 --- ---
0287 STD Y = 33.2 Y = 843.8 Y = 141.1 Y = 3584.8 Y = 238.6 Y = 6061.3 Y = 357 Y = 9067.4 --- ---
0287 HIGH Y = 33.2 Y = 843.8 Y = 123.7 Y = 3142.2 Y = 216.7 Y = 5504.2 Y = 320.5 Y = 8139.9 Y = 401 Y = 10185
0307 STD Y = 33.2 Y = 843.8 Y = 141.8 Y = 3584.8 Y = 238.6 Y = 6061.3 Y = 357 Y = 9067.4 --- ---
0327 HIGH Y = 33.2 Y = 843.8 Y = 120.7 Y = 3064.9 Y = 216.7 Y = 5504.2 Y = 320.5 Y = 8139.9 Y = 401 Y = 10185
0357 STD Y = 33.2 Y = 843.8 Y = 120.7 Y = 3064.9 Y = 216.7 Y = 5504.2 Y = 320.5 Y = 8139.9 Y = 401 Y = 10185
0357 HIGH Y = 33.2 Y = 843.8 Y = 120.7 Y = 3064.9 Y = 217.8 Y = 5531.5 Y = 328.1 Y = 8334.6 Y = 445 Y = 11302.6
0397 STD Y = 33.2 Y = 843.8 Y = 120.7 Y = 3064.9 Y = 217.8 Y = 5531.5 Y = 328.1 Y = 8334.6 Y = 445 Y = 11302.6

NOTE: Weights and approximate center of gravity location shown for base unit. Any options selected may add weight to the unit and affect
the center of gravity. Locate the center of gravity through trial lifts to account for possible variations in unit configuration. Contact your nearest
Johnson Controls Sales Office for weight data.

JOHNSON CONTROLS 31
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

32 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 4 - INSTALLATION

LOCATION REQUIREMENTS
To achieve optimum performance and trouble-free Any ductwork or attenuators fitted to the unit must not
service, it is essential that the proposed installation have a total static pressure resistance, at full unit air-
site meets the location and space requirements for the flow, exceeding the capability of the fans installed in
model being installed. For dimensions, see SECTION the unit.
6 - TECHNICAL DATA.
INDOOR INSTALLATIONS
It is important to ensure that the minimum service ac-
cess space is maintained for cleaning and maintenance The unit can be installed in an enclosed plant room,
purposes. provided the floor is level and of suitable strength to
support the full operating weight of the unit. It is essen-
OUTDOOR INSTALLATIONS tial that there is adequate clearance for airflow to the
The units can be installed at ground level on a suitable
unit. The discharge air from the top of the unit must be 4
ducted away to prevent re-circulation of air within the
flat level foundation easily capable of supporting the
plant room. If common ducts are used for fans, non-re-
weight of the unit, or on a suitable rooftop location. In
turn dampers must be fitted to the outlet from each fan.
both cases an adequate supply of air is required. Avoid
locations where the sound output and air discharge The discharge ducting must be properly sized with a
from the unit may be objectionable. total static pressure loss, together with any intake static
pressure loss, less than the available static pressure ca-
The location should be selected for minimum sun ex-
pability for the type of fan fitted.
posure and away from boiler flues and other sources
of airborne chemicals that could attack the condenser The discharge air duct usually rejects outside the build-
coils and steel parts of the unit. ing through a louver. The outlet must be positioned to
prevent the air being drawn directly back into the air
If located in an area accessible to unauthorized per-
intake for the condenser coils; as such re-circulation
sons, steps must be taken to prevent access to the unit
will affect unit performance.
by means of a protective fence. This will help to pre-
vent the possibility of vandalism, accidental damage, LOCATION CLEARANCES
or possible harm caused by unauthorized removal of
protective guards or opening panels to expose rotating Adequate clearances around the unit(s) are required for
or high voltage components. the unrestricted airflow for the air-cooled condenser
coils and to prevent re-circulation of warm discharge
For ground level locations, the unit must be installed air back onto the coils. If clearances given are not
on a suitable flat and level concrete base that extends maintained, airflow restriction or re-circulation will
to fully support the two side channels of the unit base cause a loss of unit performance, an increase in power
frame. A one-piece concrete slab, with footings ex- consumption, and may cause the unit to malfunction.
tending below the frost line is recommended. To avoid Consideration should also be given to the possibility of
noise and vibration transmission, the unit should not be down drafts, caused by adjacent buildings, which may
secured to the building foundation. cause re-circulation or uneven unit airflow.
On rooftop locations, choose a place with adequate For locations where significant cross winds are expect-
structural strength to safely support the entire operating ed, such as exposed roof tops, an enclosure of solid
weight of the unit and service personnel. The unit can or louver type is recommended to prevent wind turbu-
be mounted on a concrete slab, similar to ground floor lence interfering with the unit airflow.
locations, or on steel channels of suitable strength. The
channels should be spaced with the same centers as the When units are installed in an enclosure, the enclosure
unit side and front base rails. This will allow vibration height should not exceed the height of the unit on more
isolators to be fitted if required. Isolators are recom- than one side. If the enclosure is of louvered construc-
mended for rooftop locations. tion, the same requirement of static pressure loss ap-
plies as for ducts and attenuators stated above.

JOHNSON CONTROLS 33
FORM 201.23-NM2
SECTION 4 - INSTALLATION
ISSUE DATE: 09/30/2019

Where accumulation of snow is likely, additional SHIPPING BRACES

height must be provided under the unit to ensure nor-
The chiller’s modular design does not require shipping
mal airflow to the unit
braces.
Clearance dimensions provided elsewhere
are necessary to maintain good airflow CHILLED LIQUID PIPING
and ensure correct unit operation. It is
also necessary to consider access require- General Requirements
ments for safe operation and maintenance The following piping recommendations are intended to
of the unit and power and control panels. ensure satisfactory operation of the unit(s). Failure to
Local health and safety regulations, follow these recommendations could cause damage to
or practical considerations for service the unit, or loss of performance, and may invalidate the
replacement of large components, may warranty.
require larger clearances than those given The maximum flow rate and pressure drop
in the SECTION 6 - TECHNICAL DATA for the cooler must not be exceeded at any
(Page 51). time. See SECTION 6 - TECHNICAL
DATA (Page 51)
VIBRATION ISOLATORS
The liquid must enter the cooler at the
Optional sets of vibration isolators can be supplied
inlet connection. The inlet connection
loose with each unit.
for the cooler is at the control panel end
Using the Isolator tables shipped with the unit in the in- of the cooler.
formation pack, see the Dimensions - 2 and 3 Compres-
sor SI on page 112, Isolator Selection and Mounting A flow switch must be installed in the customer pip-
on page 133 and One Inch Deflection Spring Isola- ing at the outlet of the cooler and wired back to the
tors Cross-Reference on page 150 for units shipped control panel using shielded cable.
on or after June 15, 2008 and One Inch Deflection There should be a straight run of piping of at least 5
Spring Isolators Installation Instructions on page 151 pipe diameters on either side. The flow switch should
for units shipped before June 15, 2008). Identify each be wired to Terminals 2 and 13 on the 1TB terminal
mount and its correct location on the unit. block (See Figure 32 on page 171 and Figure 33 on
page 172). A flow switch is required to prevent dam-
Installation
age to the cooler caused by the unit operating without
Place each mount in its correct position and lower the adequate liquid flow.
unit carefully onto the mounts ensuring the mount en-
gages in the mounting holes in the unit base frame. The flow switch used must have gold plated contacts
for low voltage/current operation. Paddle type flow
On adjustable mounts, transfer the unit weight evenly switches suitable for 150 psig (10 bar) working pres-
to the springs by turning the mount adjusting nuts (lo- sure and having a 1 in. N.P.T. connection can be ob-
cated just below the top plate of the mount) counter- tained from YORK as an accessory for the unit. Alter-
clockwise to raise and clockwise to lower. This should natively, a differential pressure switch fitted across an
be done two turns at a time until the top plates of all orifice plate may be used, preferably of the high/low
mounts are between 1/4 in. and 1/2 in. (6 mm and 12 limit type.
mm) clear of top of their housing and the unit base is
level. The chilled liquid pump(s) installed in the piping
system(s) should discharge directly into the unit cooler
A more detailed installation instruction
section of the system. The pump(s) may be controlled
is provided on Pages 164 through 169 for
by the chiller controls or external to the unit. For de-
units shipped on or after June 15, 2008
tails, see “Electrical Elementary and Connection Dia-
and Pages 170 through 174 for units
grams.”
shipped before June 15, 2008.

34 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 4 - INSTALLATION
ISSUE DATE: 09/30/2019

Pipework and fittings must be separately supported to Evaporator heater mats are installed under the insula-
prevent any loading on the cooler. Flexible connections tion, and are powered from the chiller's control panel.
are recommended which will also minimize transmis- In sub-freezing conditions, unless the evaporator has
sion of vibrations to the building. Flexible connections been drained or an appropriate water-to-glycol con-
must be used if the unit is mounted on anti-vibration centration is maintained, high voltage power to the
mounts, as some movement of the unit can be expected chiller must be kept on to ensure the heater mats assist
in normal operation. in evaporator freeze protection. If there is a potential
for power loss, Johnson Controls recommends that the
Piping and fittings immediately next to the cooler evaporator is drained or that water in the chilled water
should be readily de-mountable to enable cleaning be- circuit be replaced with an appropriate water-to-glycol
fore operation, and to facilitate visual inspection of the concentration.
exchanger nozzles.
Any debris left in the water piping between
The cooler must be protected by a strainer, prefer- the strainer and cooler could cause seri-
ably of 40 mesh, fitted as close as possible to the liq- ous damage to the tubes in the cooler and
uid inlet connection, and provided with a means of must be avoided. Be sure the piping is
local isolation.
4
clean before connecting it to the evapora-
tor. Keep evaporator nozzles and chilled
The cooler must not be exposed to flushing velocities
liquid piping capped prior to installation
or debris released during flushing. It is recommended
to assure construction debris is not al-
that a suitably sized bypass and valve arrangement is
lowed to enter.
installed to allow flushing of the piping system. The
bypass can be used during maintenance to isolate the The installer/user must also ensure that
heat exchanger without disrupting flow to other units. the quality of the water in circulation is
adequate, without any dissolved gases,
Thermometer and pressure gauge connections should which can cause oxidation of steel parts
be provided on the inlet and outlet connections of each within the cooler.
cooler. Gauges and thermometers are not provided
with the unit.
WATER TREATMENT
Drain and air vent connections should be provided at The unit performance provided in the Design Guide
all low and high points in the piping to permit drainage is based on a fouling factor of 0.0001 ft2hr°F/Btu
of the system and to vent any air in the pipes. (0.018m2/hr °C/kW). Dirt, scale, grease and certain
Liquid system lines at risk of freezing, due to low am- types of water treatment will adversely affect the heat
bient temperatures should be protected using insula- exchanger surfaces and therefore the unit performance.
tion and heater tape and/or a suitable glycol solution. Foreign matter in the water system(s) can increase the
The liquid pump(s) may also be used to ensure liquid heat exchanger pressure drop, reducing the flow rate
is circulated when the ambient temperature approaches and causing potential damage to the heat exchanger
freezing point. tubes.

Insulation should also be installed around the cooler Aerated, brackish or salt water is not recommended for
nozzles. Heater tape of 21 watts per meter under the in- use in the water system(s). Johnson Controls recom-
sulation is recommended, supplied independently and mends that a water treatment specialist should be con-
controlled by an ambient temperature thermostat set to sulted to determine whether the proposed water com-
switch ON at approximately 4°F, above the freezing position will adversely affect the evaporator materials
temperature of the chilled liquid. of carbon steel and copper. The pH value of the water
flowing through the evaporator must be kept in a range
between 7 and 8.5.

JOHNSON CONTROLS 35
FORM 201.23-NM2
SECTION 4 - INSTALLATION
ISSUE DATE: 09/30/2019

PIPEWORK ARRANGEMENT Option Flanges

The following is a suggested piping arrangement for One of two types of flanges may be fitted depending
single unit installations. For multiple unit installations, on the customer or local Pressure Vessel Code require-
each unit should be piped as shown in Figure 5 on page ments. These are grooved adapter flanges, normally
36. supplied loose, or weld flanges, which may be supplied
loose or ready-fitted. Grooved adapter and weld flange
dimensions are to ISO 7005 - NP10.

-Isolating Valve - Normally Open

-Isolating Valve - Normally Closed
WELD FLANGE GROOVED ADAPTER
LD29341
-Flow Regulating Valve
-Flow Measurement Device Figure 7 - FLANGE ATTACHMENT
-Strainer
-Pressure Tapping REFRIGERANT RELIEF VALVE PIPING
-Flow Switch
LD10507
-Flanged Connection The evaporator is protected against internal refrigerant
-Pipework overpressure by refrigerant relief valves. A pressure re-
lief valve is mounted on each of the main refrigerant
Figure 5 - PIPEWORK ARRANGEMENT
lines connecting the cooler to the compressors.

CONNECTION TYPES AND SIZES A piece of pipe is fitted to each valve and directed so
that when the valve is activated the release of high
For connection sizes relevant to individual models see pressure gas and liquid cannot be a danger or cause
SECTION 6 - TECHNICAL DATA. injury. For indoor installations, pressure relief valves
should be piped to the exterior of the building.
COOLER CONNECTIONS
Standard chilled liquid connections on all coolers are The size of any piping attached to a relief valve must
of the grooved type (See Figure 6 on page 36). be of sufficient diameter so as not to cause resistance to
the operation of the valve. Unless otherwise specified
by local regulations. Internal diameter depends on the
length of pipe required and is given by the following
formula:
D5 = 1.447 x L
Where:
LD10494
D = minimum pipe internal diameter in cm
Figure 6 - GROOVED NOZZLE L = length of pipe in meters
If relief piping is common to more than one valve, its
cross-sectional area must be at least the total required
by each valve. Valve types should not be mixed on a
common pipe. Precautions should be taken to ensure
the outlets of relief valves or relief valve vent pipes
remain clear of obstructions at all times.

36 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 4 - INSTALLATION
ISSUE DATE: 09/30/2019

DUCTWORK CONNECTION ELECTRICAL CONNECTION

General Requirements The following connection recommendations are in-

tended to ensure safe and satisfactory operation of the
The following ductwork recommendations are intend-
unit. Failure to follow these recommendations could
ed to ensure satisfactory operation of the unit. Failure
cause harm to persons, or damage to the unit, and may
to follow these recommendations could cause damage
invalidate the warranty.
to the unit, or loss of performance, and may invalidate
the warranty. No additional controls (relays, etc.)
should be mounted in the control panel.
When ducting is to be fitted to the fan discharge it is Power and control wiring not connected
recommended that the duct should be the same cross- to the control panel should not be run
sectional area as the fan outlet and straight for at least 3 through the control panel. If these pre-
ft (1 m) to obtain static regain from the fan. Ductwork cautions are not followed it could lead
should be suspended with flexible hangers to prevent to a risk of electrocution. In addition,
noise and vibration being transmitted to the structure. electrical noise could cause malfunctions
A flexible joint is also recommended between the duct or damage the unit and its controls. 4
attached to the fan and the next section for the same
reason. Flexible connectors should not be allowed to After power wiring connection, do not
concertina. switch on mains power to the unit. Some
internal components are live when the
The unit is not designed to take structural loading. No mains are switched on and this must
significant amount of weight should be allowed to rest only be done by “Authorized” persons
on the fan outlet flange, deck assemblies or condenser familiar with starting, operating, and
coil module. No more than 3 ft (1 m) of light construc- troubleshooting this type of equipment.
tion ductwork should be supported by the unit. Where
cross winds may occur, any ductwork must be support-
ed to prevent side loading on the unit.
If the ducts from two or more fans are to be combined
into a common duct, back-flow dampers should be fit-
ted in the individual fan ducts. This will prevent re-
circulation of air when only one of the fans is running.
Units are supplied with outlet guards for safety and to
prevent damage to the fan blades. If these guards are
removed to fit ductwork, adequate alternative precau-
tions must be taken to ensure persons cannot be harmed
or put at risk from rotating fan blades.

JOHNSON CONTROLS 37
FORM 201.23-NM2
SECTION 4 - INSTALLATION
ISSUE DATE: 09/30/2019

POWER WIRING 115 VAC CONTROL SUPPLY TRANSFORMER

All electrical wiring should be carried out in accor- A 3-wire high voltage to 115 VAC supply transformer
dance with local regulations. Route properly sized is standard in the chiller. This transformer is mounted
cables to cable entries on the unit. in the cabinet and steps down the high voltage supply
to 115 VAC to be used by the controls, VSD, Feed and
In accordance with local codes, NEC codes and U.L. Drain Valve Controller, valves, solenoids, heaters, etc.
Standards, it is the responsibility of the user to install
over current protection devices between the supply The high voltage for the transformer primary is taken
conductors and the power supply terminals on the unit. from the chiller input. Fusing is provided for the trans-
former.
To ensure that no eddy currents are set up in the power
panel, the cables forming the 3-phase power supply Removing high voltage power to the
must enter via the same cable entry. chiller will remove the 115 VAC supply
voltage to the control panel circuitry and
All sources of supply to the unit must be the evaporator heater. In cold weather,
taken via a common point of isolation (not this could cause serious damage to the
supplied by Johnson Controls). chiller due to evaporator freeze-up. Do
not remove power unless alternate means
are taken to ensure operation of the
evaporator heater.
Copper power wiring only should be used for supply-
ing power to the chiller. This is recommended to avoid CONTROL PANEL WIRING
safety and reliability issues resulting from connection
failure at the power connections to the chiller. Alumi- All control wiring utilizing contact closures to the con-
num wiring is not recommended due to thermal char- trol panel terminal block is nominal 115 VAC and must
acteristics that may cause loose terminations result- be run in shielded cable, with the shield grounded at
ing from the contraction and expansion of the wiring. the panel end only, and run in water tight conduit. Run
Aluminum oxide may also build up at the termination shielded cable separately from mains cable to avoid
causing hot spots and eventual failure. If aluminum electrical noise pick-up. Use the control panel cable
wiring is used to supply power to the chiller, AL-CU entry to avoid the power cables.
compression fittings should be used to transition from Voltage free contacts connected to the panel must be
aluminum to copper. This transition should be done in suitable for 115 VAC - 10 mA (gold contacts recom-
an external box separate to the power panel. Copper mended). If the voltage free contacts form part of a relay
conductors can then be run from the box to the chiller. or contactor, the coil of the device must be suppressed
using a standard R/C suppressor. The above precau-
POWER SUPPLY WIRING
tions must be taken to avoid electrical noise, which
Units require only one 3-phase supply, plus earth could cause a malfunction or damage to the unit and its
ground. controls.
Connect the 3-phase supplies to the terminal block or
optional circuit breaker located in the panel using lug
sizes detailed in SECTION 6 - TECHNICAL DATA (see
Figure 26 on page 165, Figure 32 on page 171 and
Figure 33 on page 172.
Connect a ground wire from the chiller panel ground
lug to the incoming line supply ground.

38 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 4 - INSTALLATION
ISSUE DATE: 09/30/2019

VOLTS FREE CONTACTS Remote Run / Stop

Voltage free contacts are rated at 115 VAC, 100 VA re- A Remote Run/Stop input is available for each pair of
sistive load only. Inductive loads must be suppressed systems (1/3 and 2/4). These inputs require a dry con-
across the coil. tact to start and stop the system. System 1/3 remote
dry contacts are connected between Terminals 2 and
Chilled Liquid Pump Starter 15 of 1TB (Figure 32 on page 171 and Figure 33 on
Terminals 23 and 24 on 1TB close to start the chilled page 172) and System 2/4 dry contacts are connected
liquid pump. This contact can be used as a master start/ between Terminals 2 and 16 of 1TB (Figure 32 on page
stop for the pump in conjunction with the daily start/ 171 and Figure 33 on page 172). If remote start/stop
stop schedule. Cycle the pumps from the unit panel if is not utilized, a jumper must be paced across the ter-
the unit will be operational or shut-down during sub- minals to allow the system to run. The remote run/stop
freezing conditions. See the Evaporator Pump Con- circuitry is a 115 VAC circuit. Contacts must be rated
trol on page 197 for more information on testing the for low current (10 mA). Gold contacts should be used.
pumps.
Remote Print
4
Run Contact Closure of suitable contacts connected to Terminals 2
Terminals 21 and 22 on 1TB (Figure 32 on page 171 and 14 of 1TB (Figure 32 on page 171 and Figure
and Figure 33 on page 172) close to indicate that a 33 on page 172) will cause a hard copy printout of
system is running. Operating Data/Fault History to be made if an optional
printer is connected to the RS-232 port. The remote
Alarm Contacts print circuitry is a 115 VAC circuit. Contacts must be
rated for low current (10 mA). Gold contacts should
The Systems 1/3 and 2/4 each have a single voltage-
be used.
free contact, which will operate to signal an alarm
condition whenever any system locks out, or there is a Optional Remote Setpoint Offset –
power failure. To obtain system alarm signal, connect Temperature
the alarm circuit to volt free Terminals 25 and 26 (Sys
1/3), Terminals 27 and 28 (Sys 2/4) of 1TB (Figure 32 A current or voltage signal connected to Terminals
on page 171 and Figure 33 on page 172). 17 and 18 will provide a remote offset function of the
chilled liquid setpoint, if required. See Figure 32 on
SYSTEM INPUTS page 171 and Figure 33 on page 172 for the input
location and Page 214 for a description of the option.
Flow Switch
A chilled liquid flow switch of suitable type MUST be Optional Remote Setpoint Offset – Current
connected between Terminals 2 and 13 of 1TB (Figure A current or voltage signal connected to Terminals 19
32 on page 171 and Figure 33 on page 172) to pro- and 20 will provide remote setting of the current limit
vide protection against loss of liquid flow, which will setpoint, if required. See Figure 32 on page 171 and
cause evaporator freeze-up if the chiller is permitted Figure 33 on page 172 for the input location and Page
to run. The flow switch circuitry is a 115 VAC circuit. 216 for a description of the option.
Contacts must be rated for low current (10 mA). Gold
contacts should be used. Optional Remote Setpoint Offset – Sound
Limiting
A current or voltage signal connected to Terminals
40 and 41 will provide remote setting of sound limit
setpoint, if required. See Figure 32 on page 171 and
Figure 33 on page 172 for the input location and Page
217 for a description of the option.

JOHNSON CONTROLS 39
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

40 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 5 - COMMISSIONING
PREPARATION type, open them fully (counterclockwise) then close
Commissioning of this unit should only one turn of the stem to ensure operating pressure is fed
be carried out by Johnson Controls Au- to pressure transducers. Open the liquid line service
thorized personnel. valve and oil return line ball valve fully in each system.

Compressor Oil
To add oil to a circuit - connect a YORK hand oil pump
Commissioning personnel should be thoroughly famil- (Part No. 470-10654-000) to the 1/4 in. oil charging
iar with the information contained in this document be- valve on the oil separator piping with a length of clean
fore starting the unit. hose or copper line, but do not tighten the flare nut.
Using clean oil of the correct type (“L” oil), pump oil
Commission the unit using the detailed checks outlined until all air has been purged from the hose then tight-
in the Equipment Pre Start-up and Start-up Checklist en the nut. Stroke the oil pump to add oil to the oil
on Page 45. system. The oil level should be between the middle
of the lower and middle of the upper sight glasses of
PREPARATION – GENERAL the oil separator. Approximately 4 gallons to 5 gallons
The following basic checks should be made with the are present in each refrigerant system, with typically
customer power to the unit switched OFF. 1 gallons to 2 gallons in each oil separator. Oil levels 5
in the oil separators above the top sight glass in either
Proper electrical lock out and tag out
oil separator should be avoided and may cause exces-
procedures must be followed.
sive oil carryover in the system. High oil concentration
in the system may cause nuisance trips resulting from
incorrect readings on the level sensor and temperature
sensors. Temperature sensor errors may result in poor
liquid control and resultant liquid overfeed and subse-
Inspection quent damage to the compressor.
Inspect unit for installation damage. If found, take ac-
Fans
tion and/or repair as appropriate.
Check that all fans are free to rotate and are not dam-
Refrigerant Charge aged. Ensure blades are at the same height when ro-
Packaged units are normally shipped as standard with tated. Ensure fan guards are securely fixed.
a full refrigerant operating charge. Check that refrig-
Isolation / Protection
erant pressure is present in both systems and that no
leaks are apparent. If no pressure is present, a leak test Verify all sources of electrical supply to the unit are
must be undertaken, the leak(s) located and repaired. taken from a single point of isolation. Check that the
Remote systems and units are supplied with a nitrogen maximum recommended fuse sizes given in SECTION
holding charge. These systems must be evacuated with 6 - TECHNICAL DATA has not been exceeded.
a suitable vacuum pump/recovery unit as appropriate
to below 500 microns. Control Panel
Check the panel to see that it is free of foreign materi-
Do not liquid charge with static water in the cooler. als (wire, metal chips, etc.) and clean out if required.
Care must also be taken to liquid charge slowly to
avoid excessive thermal stress at the charging point. Power Connections
Once the vacuum is broken, charge into the condenser
coils with the full operating charge as given in SEC- Check that the customer power cables are connected
TION 6 - TECHNICAL DATA. correctly to the terminal blocks or optional circuit break-
er. Ensure that connections of power cables within the
Service and Oil Line Valves panels to the circuit breaker or terminal blocks are tight.
Open each compressor suction, economizer, and dis-
charge service valve. If valves are of the back-seat

JOHNSON CONTROLS 41
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019

Grounding Programmed Options

Verify that the unit’s protective ground terminal(s) are Verify that the options factory-programmed into the
properly connected to a suitable grounding point. En- Micro Panel are in accordance with the customer’s
sure that all unit internal ground connections are tight. order requirements by pressing the OPTIONS key on
the keypad and reading the settings from the display.
Water System
Verify the chilled liquid system has been installed cor- Programmed Settings
rectly, and has been commissioned with the correct Ensure the system cutout and operational settings are in
direction of water flow through the cooler. The inlet accordance with the operating requirements by press-
should be at the refrigerant piping connection end of ing the PROGRAM key.
the cooler. Purge air from the top of the cooler using
the plugged air vent mounted on the top of the cooler Date and Time
body. Program the date and time by first ensuring that the
CLK jumper JP2 on the chiller control board is in the
Flow rates and pressure drops must be within the limits
ON position. See Figure 27 on page 166 and Figure
given in SECTION 6 - TECHNICAL DATA. Operation
28 on page 167. Then press the DATE/TIME key and
outside of these limits is undesirable and could cause
set the date and time (see Page 266).
damage.
If mains power must be switched OFF for extended Start/Stop Schedule
maintenance or an extended shutdown period, the com- Program the daily and holiday start/stop by pressing
pressor suction, discharge and economizer service stop the SCHEDULE key (see Page 266).
valves should be closed (clockwise). If there is a pos-
sibility of liquid freezing due to low ambient tempera- Setpoint and Remote Offset
tures, the coolers should be drained or power should Set the required leaving chilled liquid temperature
be applied to the chiller. This will allow the cooler setpoint and Control Range under the SETPOINTS
heater to protect the cooler from freezing down to key. The chilled liquid temperature control settings
- 20°F. Before placing the unit back in service, valves need to be set according to the required operating con-
should be opened and power must be switched on (if ditions.
power is removed for more than 8 hours) for at least 8
hours (24 hours if ambient temperature is below 86°F If remote temperature reset (offset) is to be used, the
[30°C]) before the unit is restarted. maximum reset required must be programmed by
pressing the SETPOINTS key (see Page 258).
Flow Switch
FIRST TIME START-UP
Verify a chilled water flow switch is correctly fitted in
the customer’s piping on the cooler outlet, and wired During the commissioning period there
into the control panel correctly using shielded cable. should be sufficient heat load to run
the unit under stable full load operation
There should be a straight run of at least five pipe di- to enable the unit controls, and system
ameters on either side of the flow switch. The flow operation to be set up correctly, and a
switch should be connected to Terminals 2 and 13 in commissioning log taken. Be sure that
the panel. the chiller is properly programmed and
the Equipment Pre Start-up and Start-up
Temperature Sensor(s) Checklist (Page 56) is completed.
Ensure the leaving liquid temperature sensor is coated
with heat conductive compound (Part No. 013-00890- Interlocks
000) and is inserted to the bottom of the water outlet
Verify that liquid is flowing through the cooler and that
sensor well in the evaporator. This sensor is part of the
heat load is present. Ensure that any remote run inter-
pump control freeze protection operation. It provides
locks are in the run position and that the Daily Sched-
some freeze protection and must always be fully in-
ule requires the unit to run or is overridden.
serted in the water outlet sensor well.

42 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019

Unit Switch
Place the UNIT switch on the keypad to the ON position. As discharge pressure rises, the condenser fans operate
in stages to control the pressure. Verify that the fans
Start-up operate in the correct direction of rotation and opera-
Press the SYSTEM SWITCHES key and place the tion is correct for the type of unit.
system switch for System 1 to the ON position. There
may be a few seconds delay before the first compres- Suction Superheat
sor starts because of the anti-recycle timer). Be ready Check suction superheat at steady full compressor
when each compressor starts, to switch the UNIT load only. Measure suction temperature with a thermo-
switch OFF immediately, if any unusual noises or other couple on the copper line about 6 in. (150 mm) before
adverse conditions develop. the compressor suction service valve. Measure suction
pressure at the suction transducer access valve or the
When a compressor is running, the controller monitors compressor suction service valve. Superheat should
oil pressure, motor current, and various other system be 10°F to 12°F (5.55°C to 6.67°C) and should be
parameters such as discharge pressure, chilled liquid reasonably close to the panel display. Superheat set-
temperature, etc. Should any problems occur; the con- ting is programmable on the control panel, but is not
trol system will immediately take appropriate action mechanically adjustable. The Flash Tank Drain Valve
and display the nature of the fault. controller modulates the 2 phase Drain Valve Stepper
Motor to control system superheat. Superheat control
Oil Pressure 5
is a function of suction pressure and suction tempera-
When a compressor starts, press the relevant “System ture measurements from the sensors that are routed to
Pressures” key and verify that oil differential pressure the Chiller Control Board which in turn sends control
(oil pressure-suction pressure) develops immediately. signals to the Flash Tank Drain and Fill Valve Control-
If oil pressure does not develop, the automatic con- ler located in the left, back wall of the Chiller Controls
trols will shut down the compressor. Under no circum- Cabinet.
stances should a restart attempt be made on a compres-
sor, which does not develop oil pressure immediately. Subcooling
Switch the UNIT switch to the OFF position. Check liquid subcooling at steady full compressor load
only. It is important that all fans are running for the
Refrigerant Flow
system. Measure liquid line temperature on the copper
When a compressor starts, a flow of liquid refrigerant line at the main liquid line service valve. Measure liq-
will be seen in the liquid line sight glass. After several uid pressure at the liquid line service valve. Subcooling
minutes of operation, and provided a full charge of re- should be 5°F to 7°F (2.77°C to 3.88°C). YCIV 0157
frigerant is in the system, the bubbles will disappear subcooling should be 10°F (5.55°C). No bubbles
and be replaced by a solid column of liquid. should show in the sight glass. If subcooling is out of
range, add or remove refrigerant as required to clear
Loading the sight glass. Do not overcharge the unit. Subcooling
Once the unit has been started, all operations are fully should be checked with a flash tank level of approxi-
automatic. After an initial period at minimum capacity, mately 35% with a clear sight glass.
the control system will adjust the unit load depending
on the chilled liquid temperature and rate of tempera- General Operation
ture change. If a high heat load is present, the control- After completion of the above checks for System 1,
ler will increase the speed of the compressor(s). switch OFF the SYS 1 switch on the keypad and repeat
the process for each subsequent system. When all run
Condenser and Fan Rotation correctly, stop the unit, switch all applicable switches
Once a compressor is running, discharge pressure rises to the ‘ON’ position and restart the unit.
as refrigerant is pumped into the air-cooled condenser
coils. This pressure is controlled by stages of fans to Assure all checks are completed in the Equipment Pre
ensure maximum unit efficiency while maintaining Start-up and Start-up Checklist (Pages 56 through
sufficient pressure for correct operation of the con- 61). The chiller is then ready to be placed into opera-
densers and the lubrication system. tion.

JOHNSON CONTROLS 43
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019

Operation in Sub-freezing Conditions Unit Maintenance and Shutdown in Sub-

The YCIV may be operated in sub-freezing conditions freezing Conditions
if the following freeze protections are taken : If the YCIV is maintained or shut down and will be
subjected to sub-freezing conditions, it is critical to
A. A suction service valve electric actuator is in- protect against evaporator and waterbox freeze dam-
stalled. Chiller software will operate the actuator age. Johnson Controls recommends the following op-
in order to protect against freezing due to evapo- tions (in order of freeze protection level) be performed
rator refrigerant migration. on each circuit.
-or-
A. Glycol: Replace water with an appropriate water
B. No suction service valve is installed but the water to glycol concentration of antifreeze.
circuit valves are kept open, there is continuous -or-
power to the chiller and pump for chilled water
pump control, and the pump will operate and cir- B. Drain: Remove power to the waterbox heaters.
culate water through the evaporator whenever Close the water valves, drain the evaporator, and
commanded by the chiller. leave the evaporator drain valves open.
The above operation is only advised if -or-
uninterrupted power can be ensured. Un-
foreseen power interruptions can damage C. Refrigerant Valve - Off: Close the water valves,
the evaporator in a very short time frame close flash tank drain valves, close the suction
if the temperature falls below freezing. service valves and leave power to the chiller for
evaporator heater mat and waterbox heater op-
If there is potential for power loss, Johnson Controls eration. For units without a suction service valve,
recommends the water in the chilled water circuit be close the discharge and compressor oil valves.
replaced with an appropriate water-to-glycol concen- -or-
tration.
D. Pump Control: Keep power to the chiller in or-
der to have control over chilled water pumps and
heater operation and leave the water circuit valves
open. This will enable water to circulate through
the evaporator to avoid freezing.
Options A and B are the recommended
processes for unit maintenance and
shutdown. Unforeseen power interrup-
tions can damage the evaporator in a very
short time frame if the temperature falls
below freezing.

Failure to follow Johnson Controls freeze

protection recommendations can void the
warranty.

44 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019

Equipment Pre Start-up and Start-up Checklist

MODEL YCIV

CHECKLIST New Release Form 201.23-CL2 (115)

EQUIPMENT PRE-STARTUP AND STARTUP CHECKLIST

CUSTOMER: JOB NAME:

ADDRESS: _____________________________________ LOCATION: ____________________________________
PHONE: ________________________________________ CUSTOMER ORDER NO: _________________________
JCI TEL NO: _____________________ JCI ORDER NO: __________________ JCI CONTRACT NO: ______________

CHILLER MODEL NO: UNIT SERIAL NO: ___

The work (as checked below) is in process and will be completed by: _____________ / ____________ / ___________
Month Day Year

The following work must be completed in accordance with installation instructions: 5

PRE-STARTUP Oil levels in single separator systems should not go
above the top of the upper sight glass. Dual separator
UNIT CHECKS (NO POWER) systems should also not show oil levels above the top
The following basic checks should be made with the cus- of one of the sight glasses. In the rare situation where
tomer power to the unit switched OFF. oil levels are high, drain enough oil to lower the level to
the bottom of the top sight glass.
WARNING: Proper electrical lock out and tag procedures Sight glasses will vary in type depending upon the
must be followed. manufacturer of the separator. One type will have balls
that float in the sight glasses to indicate level. Another
Check the system 24 hours prior to initial start: type will have a bulls' eye glass. The bulls' eye glass
will tend to appear to lose the lines in the bulls' eye
1. Inspect the unit for shipping or installation when the level is above the glass. Oil level should not
damage. .................................................................. be above the top sight glass. In the rare situation where
oil levels are high, drain oil to lower the level to the bot-
2. Ensure that all piping has been completed. ............
tom of the top sight glass.
3. Assure the unit is properly charged and there are Oil levels in the oil separators above the top sight glass
no piping leaks. ....................................................... in either oil separator should be avoided and may
4. Open each system suction service valve, dis- cause excessive oil carryover in the system. High oil
charge service valve, economizer service valve, concentration in the system may cause nuisance trips
liquid line stop valve, and oil line ball valve. ............ resulting from incorrect readings on the level sensor
and temperature sensors. Temperature sensor errors
5. The oil separator oil level(s) should be main- may result in poor refrigerant control and liquid over-
tained so that an oil level is visible in either of the feed to the compressor.
oil separator sight glasses when a compressor is
In the unlikely event it is necessary to add oil, con-
running at high speeds for 10 to 15 minutes. An
nect a YORK oil pump to the charging valve on the oil
oil level may not be visible in the sight glasses
separator, but do not tighten the flare nut on the deliv-
when the compressor is off and it may be neces-
ery tubing. With the bottom (suction end) of the pump
sary to run the compressor to obtain a level. In
submerged in oil to avoid entrance of air, operate the
shutdown situations and at some load points,
pump until oil drips from the flare nut joint, allowing the
much of the oil may be in the condenser and the
air to be expelled, and tighten the flare nut. Open the
level in the separators may fall below the bottom
compressor oil charging valve and pump in oil until it
sight glass. ..............................................................
reaches the proper level as described above.
On systems with dual oil separators per compressor,
CAUTION: When oil levels are high, adding oil may not
one separator may show a lower level or no level, while
visibly increase the level in the separators during oper-
the other separator shows a level between the 2 sight
ation. This may be an indication the level is already too
glasses. This is normal and a level is only required in
high and the oil is being pumped out into the system
one separator. Do not add oil to raise the level in the
where it will cause heat transfer and control problems.
other oil separator.

JOHNSON CONTROLS 1

JOHNSON CONTROLS 45
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019
FORM 201.23-CL2
ISSUE DATE: 1/12/2015

6. Ensure water pumps are on. Check and adjust A. START-UP

water pump flow rate and pressure drop across
the cooler. ............................................................... Panel Checks
(Power ON – Both System Switches OFF)
CAUTION: Excessive flow may cause catastrophic
damage to the evaporator. WARNING: You are about to turn power on to this machine.
SAFETY IS NUMBER ONE! Only qualified individuals are
7. Check the control panel to ensure it is free of permitted to service this product. The qualified individual fur-
foreign material (wires, metal chips, tools, docu- thermore is to be knowledgeable of, and adhere to, all safe
ments, etc.). ............................................................ work practices as required by NEC, OSHA, and NFPA 70E.
Proper personal protection is to be utilized where and when
8. Visually inspect wiring (power and control). Wiring
required.
MUST meet N.E.C. and local codes. ......................
1. Assure the chiller OFF/ON UNIT switch at the bot-
9. Check tightness of the incoming power wiring in-
tom of the keypad is OFF. .......................................
side the power panel and inside the motor terminal
boxes. ..................................................................... 2. Apply 3-phase power to the chiller. Turn on the
optional panel circuit breaker if supplied. The
10. Check for proper size fuses in control circuits. .......
customer’s disconnection devices can now be set
11. Verify that field wiring matches the 3-phase to ON. ......................................................................
power requirements of the chiller.
3. Verify the control panel display is illuminated. ........
(See chiller nameplate) ...........................................
4. To prevent the compressors from starting, assure
12. Be certain all water temperature sensors are in-
that the system switches under the SYSTEM
serted completely in their respective wells and are
SWITCHES key are in the OFF position. ................
coated with heat conductive compound. .................
5. Verify that the voltage supply corresponds to the
13. Ensure the suction line temperature sensors are
unit requirement and is within the limits given in
strapped onto the suction lines at 4 or 8 O’clock
the “Technical Data” section. ...................................
positions. .................................................................
6. Ensure the heaters on each compressor are ON
14. Assure the glycol level in the VSD cooling system
using a clamp-on ammeter. Heater current draw is
is 9 to 15 inches (23 to 28 cm) from the top of the
approx. 3A. ..............................................................
fill tube. This check should be performed prior to
running the pump. ................................................... 7. Verify the “Factory Set” overload potentiometers
CAUTION: Never run the glycol pump without coolant! on the VSD Logic Board are set correctly. Press
Running the glycol pump without coolant may damage the VSD DATA key and using the arrow keys,
the pump seals. scroll to the compressor overload settings. Verify
the “Factory Set” overload potentiometer(s) on the
Always fill the system with approved YORK coolant VSD Logic Board are set correctly. In the unlikely
(P/N 013-03344-000) to avoid damage to the pump, event that they are not set correctly, adjust the po-
cooling system and the chiller. tentiometers until the desired values are achieved.
15. Check to assure the remote start/stop for Sys #1 WARNING: The VSD is powered up and live. High voltage
on Terminals 2 to 15 and Sys #2 on Terminals 2 to exists in the area of the circuit board on the bus bars, VSD
16 are closed on the User Terminal Block 1TB to Pole Assemblies, and wiring to the input inductor.
allow the systems to run. If remote cycling devices
are not utilized, place a wire jumper between Adjust the potentiometers, if needed. The potentiometers are
these terminals. ....................................................... Sys 1=R19, Sys 2=R64, Sys 3=R42, and Sys 4=R86.

16. Ensure that the CLK jumper JP2 on the is in the CAUTION: Incorrect settings of the potentiometers may
ON position. ............................................................ cause damage to the equipment.

17. Assure a flow switch is connected between Ter- Record the Overload Potentiometer settings below:
minals 2 and 13 on the User Terminal Block 1TB
in the panel. Throttle back flow to assure the flow Compressor Overload Setting:
switch opens with a loss of flow. It is recommend-
ed that auxiliary pump contacts be placed in series System 1 = ______________ Amps
with the flow switch for additional protection, if the
pump is turned off during chiller operation. When- System 2 = ______________ Amps
ever the pump contacts are used, the coil of the
pump starter should be suppressed with an RC System 3 = ______________ Amps
suppressor (031-00808-000). .................................
System 4 = ______________ Amps

2 JOHNSON CONTROLS

46 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019
FORM 201.23-CL2
ISSUE DATE: 1/12/2015

8. Press the STATUS key. If the following message B. PROGRAMMED VALUES

appears, immediately contact Johnson Controls
Product Technical Support. The appearance of this Program the required operating values into the microproces-
message may mean the chiller has lost important sor for cutouts, safeties, etc. and record them in the chart
factory programmed information. The serial num- below.
ber and other important data may need to be Suction Pressure Cutout = ____________ PSIG (kPa)
reprogrammed. .......................................................
Low Ambient Cutout = __________________ °F (°C)
UNIT WARNING: INVALID SERIAL NUMBER
Leaving Chilled Liquid
ENTER UNIT SERIAL NUMBER
Temperature Cutout =__________________ °F (°C)
NOTE: Changing the programming of this feature requires Motor Current Limit = ___________________% FLA
the date and time to be set on the chiller prior to program-
ming. Additional information regarding this message and how Pulldown Current Limit Time =______________MIN
to enter the serial number with the factory provided password Suction Superheat Setpoint = _____________°F (°C)
is outlined in the “Serial Number Programming”.
Remote Unit ID # = ___________________________
If the following message appears when the STATUS key
is pressed, immediately contact Johnson Controls Product Sound Limit Setpoint = ______________________%
Technical Support. The appearance of this message indi-
cates the chiller is a High IPLV chiller operating in Standard
C. CHILLED LIQUID SETPOINT
IPLV control.
UNIT WARNING: OPTIMIZED EFFICIENCY Program the Chilled Liquid Setpoint/Range and record:
DISABLED – CONTACT YORK REPRESENTATIVE Local Cooling Setpoint = _____________ °F (°C)
Local Cooling Range = ______ to ______ °F (°C) 5
NOTE: Changing the programming of this feature requires
the date and time to be set on the chiller prior to program- Maximum Remote
ming. Additional information regarding this message is pro- Temperature Reset = _______ to ______ °F (°C)
vided in the “Enabling Optimized High IPLV Mode”.
9. Program the required options into the Panel for D. DATE/TIME, DAILY SCHEDULE, AND CLOCK
the desired operating requirements. Record the JUMPER
values below:
1. Set the date and time. .............................................
2. Program the Daily Schedule start and
Display Language = ___________________________
stop times. ...............................................................
3. Place the panel in Service Mode and turn on each
Chilled Liquid Mode = __________________________ fan stage one by one. Ensure the fans rotate in
the correct direction, so air flow exits the top of the
chiller .......................................................................
Local/Remote Mode = _________________________
4. Remove the cap on the fill tube and run the glycol
pump to verify the level in the fill tube. Ensure the
glycol level in the VSD cooling system is 9 to15
Display Units = _______________________________ inches (23 to 28 cm) from the top of the fill tube
while running. The pump can be run by placing the
chiller in the Service Mode. Be sure to re-install
Lead/Lag Control = ____________________________ the cap before stopping the glycol pump to avoid
overflowing the fill tube when the glycol pump
is turned off. The glycol system holds about 3.5
Remote Temperature Reset = ___________________ gallons of coolant (P/N 013-03344-000) on the
largest chiller model. ...............................................

Remote Current Reset = _______________________

Remote Sound Limit = __________________________

Low Ambient Cutout = __________________________

CAUTION: Damage to the chiller could result if the options
are improperly programmed.

JOHNSON CONTROLS 3

JOHNSON CONTROLS 47
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019
FORM 201.23-CL2
ISSUE DATE: 1/12/2015

E. INITIAL START-UP
After the control panel has been programmed and the com- The subcooling temperature of each system should be cal-
pressor heaters have been energized for at least 8 hours culated by recording the temperature of the liquid line at the
(ambient temperature more than 96ºF (36ºC)) or 24 hours outlet of the condenser and subtracting it from the recorded
(ambient temperature less than 86ºF (30ºC)), the chiller may liquid line pressure at the liquid stop valve, converted to tem-
be placed in operation. perature from the temperature/pressure chart.
1. Turn on the UNIT switch and program the system Subcooling
switches on the keypad to the “ON” position. .........
Example:
2. If cooling demand permits, the compressor(s) will
start and a flow of refrigerant will be noted in the Liquid line pressure =
sight glass, after the anti recycle timer times out 110 PSIG converted to 93°F (33.9°C)
and the precharge of the DC Bus is completed.
Minus liquid line temp. -87°F (30.6°C)
After several minutes of operation, the bubbles in
the sight glass will disappear and there will be a Subcooling = 6°F (3.3°C)
solid column of liquid when the Drain and Feed
The subcooling should be adjusted between 5 and 7 °F
Valves stabilize the flash tank level. ........................
(2.77 and 3.78°C)
3. Allow the compressor to run a short time, being
ready to stop it immediately if any unusual noise NOTE: This may be difficult to measure, due to test instru-
or adverse conditions develop. Immediately at ment error and the difficulty generally encountered when
start-up, the compressor may make sounds differ- measuring subcooling on systems operating with very low
ent from its normal high-pitched sound. This is due condenser subcooling.
to the compressor coming up to speed and the Record the liquid line pressure and it’s corresponding tem-
initial lack of an oil film sealing the clearances in perature, liquid line temperature, and subcooling below:
the rotors. This should be of no concern and lasts
for only a short time. ...............................................
SYS 1 SYS 2
4. Check the system operating parameters. Do this
by selecting various displays such as pressures Liq Line Press = _____ _____ PSIG (kPa)
and temperatures. Compare these to test gauge Temp = _____ _____ °F (°C)
readings. .................................................................
Liq Line Temp = _____ _____ °F (°C)
Subcooling = _____ _____ °F (°C)
F. CHECKING SUBCOOLING AND SUPERHEAT
Add or remove charge as necessary to obtain a full sight
The subcooling should always be checked when charging glass fully loaded while keeping subcooling to about 5 to
the system with refrigerant and/or before checking the super- 7°F (2.77 to 3.78°C). After an adjustment is made to the
heat. The subcooling measurement should always be taken charge, the flash tank level may rise or drop from the ap-
with the system loaded, the economizer solenoid energized, prox. 35% point. Before another measurement is made,
and the level in the flash tank reasonably stable with a level allow the level to stabilize.
of approximately 35%.
After the subcooling is set, the suction superheat should
Note: It may be desirable to check subcooling with one com- be checked. The superheat should be checked only after
pressor running to allow the compressor to operate at full steady state operation of the chiller has been established,
speed for a period of time to stabilize system temperatures and the system is running in a fully loaded, stable condition.
and pressures. Correct superheat for a system is between 8 and 12°F (4.45
When the refrigerant charge is correct, there will be no bub- and 6.67°C) and should be reasonably close to the system
bles in the liquid sight glass with the system operating under superheat on the chiller display.
full load conditions, and there will be 5 to 7°F (2.77 to 3.78°C) The superheat is calculated as the difference between the
subcooled liquid leaving the condenser. Subcooling should actual temperature of the returned refrigerant gas in the
be set at 10°F (5.56°C). An overcharged system should be suction line entering the compressor and the temperature
guarded against. Evidence of overcharge is as follows: corresponding to the suction pressure as shown in a stan-
a. If a system is overcharged, the discharge dard pressure/temperature chart.
pressure will be higher than normal. Normal
discharge/condensing pressure can be found in
the refrigerant temperature/pressure chart; use
entering air temperature plus 30°F (17°C) for
normal condensing temperature.
b. The temperature of the liquid refrigerant out of
the condenser should be about 5 to 7°F (2.77 to
3.78°C) less than the condensing temperature
(The temperature corresponding to the con-
densing pressure from the refrigerant tempera-
ture/pressure chart).

4 JOHNSON CONTROLS

48 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 5 - COMMISSIONING
ISSUE DATE: 09/30/2019
FORM 201.23-CL2
ISSUE DATE: 1/12/2015

Superheat JOB NAME: _____________________________

Example:
SALES ORDER #: ________________________
Suction Temp = 46°F (8°C)
minus Suction Press
30 PSIG converted to Temp - 35°F (1°C)
LOCATION: _____________________________
11°F (6°C)
SOLD BY: ______________________________
The suction temperature should be taken 6" (13 mm) before
the compressor suction service valve, and the suction pres-
sure is taken at the compressor suction service valve. INSTALLING
CONTRACTOR: _________________________
No superheat adjustments are necessary and the electroni-
cally controlled Drain Valve need not be adjusted in the
field. Ensure that superheat is controlling at 8 to 12°F (4.45 START-UP
to 6.67°C). The purpose of this check is primarily to verify TECHNICIAN/
the transducer and suction temperature sensors in a system
are providing reasonably accurate outputs to the chiller
COMPANY: _____________________________
controls. It also checks the operation of the Feed and Drain
Valves. START-UP DATE: ________________________
Record the suction temperature, suction pressure, suction
pressure converted to temperature, and superheat of each CHILLER MODEL #: ______________________
system below:

SYS 1 SYS 2
SERIAL #: ______________________________ 5
Suction Press = _____ _____ PSIG (kPa)
COMPRESSOR #1
SP to Temp = _____ _____ °F (°C)
MODEL#: ______________________________
Suction Temp = _____ _____ °F (°C)
Superheat = _____ _____ °F (°C) SERIAL #: ______________________________
Discharge superheat will typically run approx. 28 to 30°F.
This can be checked on the micropanel display. If the suction COMPRESSOR #2
superheat drops very low or the economizer feeds liquid into MODEL#: ______________________________
the compressor, the superheat will drop sharply to approx. 2
to 3°F.
SERIAL #: ______________________________
Leak Checking
Leak check compressors, fittings, and piping to ensure no COMPRESSOR #3
leaks. MODEL#: ______________________________
If the chiller is functioning satisfactorily during the initial op-
erating period, no safeties trip and the chiller controls chilled SERIAL #: ______________________________
liquid temperature; it is now ready to be placed into service.
COMPRESSOR #4
MODEL#: ______________________________

SERIAL #: ______________________________

JOHNSON CONTROLS 5
JOHNSON CONTROLS 49
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

50 JOHNSON CONTROLS
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 6 - TECHNICAL DATA

WATER PRESSURE DROP CHARTS

ENGLISH UNITS

MODEL NUMBER YCIV Excessive flow, above the max. GPM, will
COOLER damage the evaporator.
60 HZ
A 0157(S/P/H)
0157(E/V)
B 0177(S/P/H/E/V)
0187(S/P/H/E/V)
0197(E/V)
C 0207(E/V)
0227(E/V)
0207(S/P/H)
0227(S/P/H)
D
0247(S/P/H/E/V)
0267(S/P/H)

JOHNSON CONTROLS 51
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

WATER PRESSURE DROP CHARTS (CONT'D)

SI UNITS

52 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

WATER PRESSURE DROP CHARTS (CONT'D)

ENGLISH UNITS

Pressure Drop Through Three Circuit YCIV Evaporators

Pressure Drop Through Three Circuit YCIV Evaporators
100

B
Pressure Drop (ft H2O)

6
A

1
100 1000 2000
Water Flow Rate (GPM)

MODEL NUMBER YCIV Excessive flow, above the max. GPM, will
EVAP damage the evaporator.
60 HZ
0267EA/VA
A 0287SA/PA/HA
0287EA/VA
0307SA/PA/HA
0327EA/VA
B 0357SA/PA/HA
0357EA/VA
0397SA/PA/HA

JOHNSON CONTROLS 53
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

WATER PRESSURE DROP CHARTS (CONT'D)

SI UNITS

Pressure Drop Through Three Circuit YCIV Evaporators

MODEL NUMBER YCIV Excessive flow, above the max. GPM, will
EVAP damage the evaporator.
60 HZ
0267EA/VA
A 0287SA/PA/HA
0287EA/VA
0307SA/PA/HA
0327EA/VA
B 0357SA/PA/HA
0357EA/VA
0397SA/PA/HA

54 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

GLYCOL CORRECTION FACTORS

The cooler is designed in accordance with ARI-590- GLYCOL CORRECTION FACTORS
92The cooler
which is designed
allows in accordance
for an increase withdrop of
in pressure
ARI-590-92 which allows for an increase in ETHYLENE GLYCOL
up to 15% above the design value shown on Pages 63 1.45
pressure drop of up to 15% above the design value
through 66. Debris in the water may also cause addi- 1.40
shown on pages 48-51. Debris in the water may 1.35
tional pressure drop.
also cause additional pressure drop. 1.30
50%
When using glycol solutions, pressure drops are higher A 1.25
When
than withusing
waterglycol solutions, factors
(see correction pressureto drops are
be applied 1.20 40%
30% C
when using glycol solutions). Special care musttobebe
higher than with water (see correction factors 1.15
20%
applied
taken not towhen using
exceed the glycol
maximumsolutions). Special
flow rate care
allowed.
1.10
10%
must be taken not to exceed the maximum flow 1.05
-10 -8 -6 -4 -2 0 2 4 6 8 C
rate
A= allowed.
Correction Factor
B
A= Correction Factor
B = Mean Temperature through Cooler
B= Mean Temperature through Cooler PROPYLENE GLYCOL
1.8
C= Concentration
C = Concentration WIW W/W
1.7
Excessive flow, above the max. GPM, will 1.6
Excessive
damage flow, above the max. GPM,
the evaporator. 1.5
50%
will damage the evaporator. A 1.4
40%
1.3
30% C
1.2
20%
1.1
10%
1.0
-10 -8 -6 -4 -2 0 2 4 6 8 C
B LD10500A

JOHNSON CONTROLS 55
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

WATER TEMPERATURE AND FLOWS

(ENGLISH UNITS)

MODEL NUM- LEAVING WATER COOLER FLOW

AIR ON CONDENSER (°F)
BER TEMPERATURE (°F) (GPM)
YCIV MIN.1 MAX.2 MIN. MAX. MIN. MAX
0157(S/P/H) 40 60 140 675 0 125
0157(E/V) 40 60 160 750 0 125
0177(S/P/H) 40 60 160 750 0 125
0177(E/V) 40 60 160 750 0 125
0187(S/P/H) 40 60 160 750 0 125
0187(E/V) 40 60 160 750 0 125
0197(E/V) 40 60 180 750 0 125
0207(S/P/H) 40 60 180 800 0 125
0207(E/V) 40 60 180 750 0 125
0227(S/P/H) 40 60 180 800 0 125
0227(E/V) 40 60 180 750 0 125
0247(S/P/H) 40 60 180 800 0 125
0247(E/V) 40 60 180 800 0 125
0267(S/P/H) 40 60 180 800 0 125
0267(E/V) 40 60 250 1200 0 125
0287(S/P/H) 40 60 250 1200 0 125
0287(E/V) 40 60 250 1200 0 125
0307(S/P/H) 40 60 300 1200 0 125
0327(E/V) 40 60 300 1200 0 125
0357(S/P/H) 40 60 300 1200 0 125
0357(E/V) 40 60 300 1200 0 125
0397(S/P/H) 40 60 300 1200 0 125

NOTES:
1. For leaving brine temperature below 40°F (4.4°C), contact your nearest Johnson Controls office for application requirements.
2. For leaving water temperature higher than 60°F (15.6°C), contact the nearest Johnson Controls office for application guidelines.

56 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

WATER TEMPERATURE AND FLOWS (CONT'D)

(SI UNITS)

MODEL LEAVING WATER COOLER3 FLOW

AIR ON CONDENSER (°C)
NUMBER TEMPERATURE (°C) (L/S)
YCIV MIN.1 MAX.2 MIN. MAX. MIN. MAX
0157(S/P/H) 4.4 15.6 8.8 42.6 -17.8 51.7
0157(E/V) 4.4 15.6 10.1 47.3 -17.8 51.7
0177(S/P/H) 4.4 15.6 10.1 47.3 -17.8 51.7
0177(E/V) 4.4 15.6 10.1 47.3 -17.8 51.7
0187(S/P/H) 4.4 15.6 10.1 47.3 -17.8 51.7
0187(E/V) 4.4 15.6 10.1 47.3 -17.8 51.7
0197(E/V) 4.4 15.6 11.4 47.3 -17.8 51.7
0207(S/P/H) 4.4 15.6 11.4 50.5 -17.8 51.7
0207(E/V) 4.4 15.6 11.4 47.3 -17.8 51.7
0227(S/P/H) 4.4 15.6 11.4 50.5 -17.8 51.7
0227(E/V) 4.4 15.6 11.4 47.3 -17.8 51.7
0247(S/P/H) 4.4 15.6 11.4 50.5 -17.8 51.7
0247(E/V) 4.4 15.6 10.1 47.3 -17.8 51.7
0267(S/P/H) 4.4 15.6 11.4 50.5 -17.8 51.7
0267(E/V) 4.4 15.6 11.4 50.5 -17.8 51.7
0287(S/P/H) 4.4 15.6 15.8 75.7 -17.8 51.7 6
0287(E/V) 4.4 15.6 15.8 75.7 -17.8 51.7
0307(S/P/H) 4.4 15.6 18.9 75.7 -17.8 51.7
0327(E/V) 4.4 15.6 18.9 75.7 -17.8 51.7
0357(S/P/H) 4.4 15.6 18.9 75.7 -17.8 51.7
0357(E/V) 4.4 15.6 18.9 75.7 -17.8 51.7
0397(S/P/H) 4.4 15.6 18.9 75.7 -17.8 51.7

NOTES:
1. For leaving brine temperature below 4.4°C, contact your nearest Johnson Controls office for application requirements.
2. For leaving water temperature higher than 15.6°C, contact the nearest Johnson Controls office for application guidelines.

JOHNSON CONTROLS 57
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (ENGLISH - STANDARD EFFICIENCY)

STANDARD EFFICIENCY
REFRIGERANT R-134a
MODEL NUMBER (YCIV____ S/P/H)
GENERAL UNIT DATA 60 HZ 0157 0177 0187 0207 0227 0247 0267
Number of Independent Refrigerant Circuits 2 2 2 2 2 2 2
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, lb 162/162 170/170 185/170 192/175 192/192 230/195 230/230
Oil Charge, Ckt.-1/Ckt.-2, gal 5/5 5/5 5/5 5/5 5/5 5/5 5/5
Compressors, Semi-hermetic Screw Qty per
2 2 2 2 2 2 2
Chiller
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, ft2 235 235 264 264 293 323 352
Number of Rows 3 3 3 3 3 3 3
Fins per Inch 17 17 17 17 17 17 17
Condenser Fans
Number, Ckt.-1/Ckt.-2 4/4 4/4 5/4 5/4 5/5 6/5 6/6
Low Noise Fans
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller Airflow, cfm 104000 104000 117000 117000 130000 143000 156000
ULTRA QUIET FANS
Fan Motor, HP 2 2 2 2 2 2 2
Total Chiller Airflow, cfm 104000 104000 117000 117000 130000 143000 156000
Dual Speed Fans - Normal Speed
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller, CFM 88000 88000 99000 99000 110000 121000 132000
Dual Speed Fans - Lower Speed
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller, CFM 67200 67200 75600 75600 84000 92400 100800
High Static Fans
Fan Motor, hp 5 5 5 5 5 5 5
Total Chiller, CFM 104000 104000 117000 117000 130000 143000 156000
Evaporator, Direct Expansion
Water Volume, gal 67.0 95.0 95.0 140.0 140.0 140.0 140.0
Maximum Water Side Pressure, psig 150 150 150 150 150 150 150
Maximum Refrigerant Side Pressure, psig 235 235 235 235 235 235 235
Minimum Chilled Water Flow Rate, gpm 140 160 160 180 180 180 180
Maximum Chilled Water Flow Rate, gpm 675 750 750 800 800 800 800
Water Connections, in. 8 10 10 10 10 10 10

Contact your nearest Johnson Controls Sales Office for weight data.

58 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (ENGLISH - STANDARD EFFICIENCY) (CONT'D)

STANDARD EFFICIENCY
Refrigerant R-134a
MODEL NUMBER (YCIV____ S/P/H)
General Unit Data 60 Hz 0287 0307 0357 0397
Number of Independent Refrigerant Circuits 3 3 3 3
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, lb 185/170/170 185/185/170 185/185/230 230/230/230
Oil Charge, Ckt.-1/Ckt.-2, gal 5/4/4 5/4/4 5/5/5 5/5/5
Glycol Charge (43% concentration), gal 5.4 5.5 6.0 6.3
Comp.s, Semihermetic Screw
Quantity per Chiller 3 3 3 3
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, ft2 381 411 469 528
Number of Rows 3 3 3 3
Fins per Inch 17 17 17 17
Condenser Fans
Number, Ckt.-1/Ckt.-2 5/4/4 5/4/4 5/5/6 6/6/6
Low Noise Fans
Fan Motor, HP/kWi 2/1.8 2/1.8 2/1.8 2/1.8
Total Chiller Airflow, cfm 169000 182000 208000 234000
Ultra Quiet Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50 6
Total Chiller Airflow, cfm 169000 182000 208000 234000
Dual Speed Fans - Normal Speed
Fan Motor, hp 2 2 2 2
Total Chiller, cfm 143000 143000 165000 165000
Dual Speed Fans - Lower Speed
Fan Motor, hp 2 2 2 2
Total Chiller, cfm 109200 109200 126000 126000
High Static Fans
Fan Motor, hp 5 5 5 5
Total Chiller, cfm 169000 182000 208000 234000
Evaporator, Direct Expansion
Water Volume, gal 202.0 236.0 236.0 236.0
Maximum Water Side Pressure, psig 150 150 150 150
Maximum Refrigerant Side Pressure, psig 235 235 235 235
Minimum Chilled Water Flow Rate, gpm 250 300 300 300
Maximum Chilled Water Flow Rate, gpm 1200 1200 1200 1200
Water Connections, in. 10 10 10 10

Contact your nearest Johnson Controls Sales Office for weight data.

JOHNSON CONTROLS 59
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (ENGLISH - HIGH EFFICIENCY)

HIGH EFFICIENCY
Refrigerant R-134a
MODEL NUMBER (YCIV____ E/V)
General Unit Data 60 Hz 0157 0177 0187 0197 0207 0227 0247
Number of Independent Refrigerant Circuits 2 2 2 2 2 2 2
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, lb 170/170 185/170 185/185 192/192 225/192 225/225 230/230
Oil Charge, Ckt.-1/Ckt.-2, gal 5/5 5/5 5/5 5/5 5/5 5/5 5/5
Compressors, Semihermetic Screw Qty per
2 2 2 2 2 2 2
Chiller
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, ft2 235 264 293 293 323 352 352
Number of Rows 3 3 3 3 3 3 3
Fins per Inch 17 17 17 17 17 17 17
Condenser Fans
Number, Ckt.-1/Ckt.-2 4/4 5/4 5/5 5/5 6/5 6/6 6/6
Low Noise Fans
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller Airflow, cfm 104000 117000 130000 130000 143000 156000 156000
Ultra Quiet Fans
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller Airflow, cfm 104000 117000 130000 130000 143000 156000 156000
Dual Speed Fans - Normal Speed
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller, cfm 88000 99000 110000 110000 121000 132000 132000
Dual Speed Fans - Lower Speed
Fan Motor, hp 2 2 2 2 2 2 2
Total Chiller, cfm 67200 75600 84000 84000 92400 100800 100800
High Static Fans
Fan Motor, hp 5 5 5 5 5 5 5
Total Chiller, cfm 104000 117000 130000 130000 143000 156000 156000
Evaporator, Direct Expansion
Water Volume, gal 95.0 95.0 95.0 110.0 110.0 110.0 140.0
Maximum Water Side Pressure, psig 150 150 150 150 150 150 150
Maximum Refrigerant Side Pressure, psig 235 235 235 235 235 235 235
Minimum Chilled Water Flow Rate, gpm 160 160 160 180 180 180 180
Maximum Chilled Water Flow Rate, gpm 750 750 750 750 750 750 800
Water Connections, in. 10 10 10 10 10 10 10

60 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (ENGLISH - HIGH EFFICIENCY) (CONT'D)

HIGH EFFICIENCY
Refrigerant R-134a
MODEL NUMBER (YCIV____ E/V)
General Unit Data 60 Hz 0267 0287 0327 0357
Number of Independent Refrigerant Circuits 3 3 3 3
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, lb 185/185/170 185/185/230 185/185/230 230/230/230
Oil Charge, Ckt.-1/Ckt.-2, gal 5/5/4 5/5/5 5/5/5 5/5/5
Glycol Charge (43% concentration), gal 5.5 5.7 6.0 6.3
Comp.s, Semihermetic Screw
Quantity per Chiller 3 3 3 3
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, ft2 411 469 469 528
Number of Rows 3 3 3 3
Fins per Inch 17 17 17 17
Condenser Fans
Number, Ckt.-1/Ckt.-2 5/5/4 5/5/6 5/5/6 6/6/6
Low Noise Fans
Fan Motor, HP/kWi 2/1.8 2/1.8 2/1.8 2/1.8
Total Chiller Airflow, cfm 182000 208000 208000 234000
Ultra Quiet Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, cfm 182000 208000 208000 234000 6
Dual Speed Fans - Normal Speed
Fan Motor, hp 2 2 2 2
Total Chiller, cfm 154000 176000 176000 198000
Dual Speed Fans - Lower Speed
Fan Motor, hp 2 2 2 2
Total Chiller, cfm 117600 134400 134400 151200
High Static Fans
Fan Motor, hp 5 5 5 5
Total Chiller, cfm 195000 247000 247000 273000
Evaporator, Direct Expansion
Water Volume, gal 202.0 202.0 236.0 236.0
Maximum Water Side Pressure, psig 150 150 150 150
Maximum Refrigerant Side Pressure, psig 235 235 235 235
Minimum Chilled Water Flow Rate, gpm 250 250 300 300
Maximum Chilled Water Flow Rate, gpm 1200 1200 1200 1200
Water Connections, in. 10 10 10 10

JOHNSON CONTROLS 61
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (SI - STANDARD EFFICIENCY)

STANDARD EFFICIENCY
REFRIGERANT R-134a
MODEL NUMBER (YCIV____ S/P/H)
GENERAL UNIT DATA 60 HZ 0157 0177 0187 0207 0227 0247 0267
Number of Independent Refrigerant Circuits 2 2 2 2 2 2 2
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, kg 74/74 77/77 84/77 87/80 87/87 105/89 105/105
Oil Charge, Ckt.-1/Ckt.-2, L 19/19 19/19 19/19 19/19 19/19 19/19 19/19
Compressors, Semihermetic Screw Qty per
2 2 2 2 2 2 2
Chiller
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, m2 21.8 21.8 24.5 24.5 27.2 30.0 32.7
Number of Rows 3 3 3 3 3 3 3
Fins per meter 669 669 669 669 669 669 669
Condenser Fans
Number, Ckt.-1/Ckt.-2 4/4 4/4 5/4 5/4 5/5 6/5 6/6
Low Noise Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 49082 49082 55218 55218 61353 67488 73624
Ultra Quiet Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 49082 49082 55218 55218 61353 67488 73624
Dual Speed Fans - Normal Speed
Fan, KWi 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Total Chiller, m3/s 42 42 47 47 52 57 62
Dual Speed Fans - Lower Speed
Fan, KWi 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Total Chiller, m3/s 32 32 36 36 40 44 48
High Static Fans
Fan, KWi 3.7 3.7 3.7 3.7 3.7 3.7 3.7
Total Chiller, m3/s 49 49 55 55 61 67 74
Evaporator, Direct Expansion
Water Volume, L 253.6 359.6 359.6 529.9 529.9 529.9 529.9
Maximum Water Side Pressure, bar 10 10 10 10 10 10 10
Maximum Refrigerant Side Pressure, bar 16 16 16 16 16 16 16
Minimum Chilled Water Flow Rate, L/s 8.8 10.1 10.1 11.4 11.4 11.4 11.4
Maximum Chilled Water Flow Rate, L/s 42.6 47.3 47.3 50.5 50.5 50.5 50.5
Water Connections, in. 8 10 10 10 10 10 10

62 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (SI - STANDARD EFFICIENCY) (CONT'D)

STANDARD EFFICIENCY
REFRIGERANT R-134a
MODEL NUMBER (YCIV____ S/P/H)
GENERAL UNIT DATA 60 HZ 0287 0307 0357 0397
Number of Independent Refrigerant Circuits 3 3 3 3
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, kg 84 / 77 / 77 84 / 84 / 77 84 / 84 / 105 105 / 105 / 105
Oil Charge, Ckt.-1/Ckt.-2, L 19 / 15 / 15 19 / 19 / 15 19 / 19 / 19 19 / 19 / 19
Glycol Charge (43% concentration), L 0 0 0 0
Compressors, Semihermetic Screw
Quantity per Chiller 3 3 3 3
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, m2 35 38 44 49
Number of Rows 3 3 3 3
Fins per meter 669 669 669 669
Condenser Fans
Number, Ckt.-1/Ckt.-2 5/4/4 5/5/4 5/5/6 6/6/6
Low Noise Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 79768 85904 98176 110448
Ultra Quiet Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 79768 85904 98176 110448 6
Dual Speed Fans - Normal Speed
Fan, KWi 1.5 1.5 1.5 1.5
Total Chiller, m /s
3
67 67 78 78
Dual Speed Fans - Lower Speed
Fan, KWi 1.5 1.5 1.5 1.5
Total Chiller, m /s
3
52 52 59 59
High Static Fans
Fan, KWi 3.7 3.7 3.7 3.7
Total Chiller, m /s
3
80 86 98 110
Evaporator, Direct Expansion
Water Volume, L 764.6 893.3 893.3 893.3
Maximum Water Side Pressure, bar 10 10 10 10
Maximum Refrigerant Side Pressure, bar 16 16 16 16
Minimum Chilled Water Flow Rate, L/s 16 19 19 19
Maximum Chilled Water Flow Rate, L/s 76 76 76 76
Water Connections, mm 245 245 245 245

JOHNSON CONTROLS 63
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (SI - HIGH EFFICIENCY)

HIGH EFFICIENCY
REFRIGERANT R-134a
MODEL NUMBER (YCIV____ E/V)
GENERAL UNIT DATA 60 HZ 0157 0177 0187 0197 0207 0227 0247
Number of Independent Refrigerant Circuits 2 2 2 2 2 2 2
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, kg 77/77 84/77 84/84 87/87 102/87 102/102 105/105
Oil Charge, Ckt.-1/Ckt.-2, L 19/19 19/19 19/19 19/19 19/19 19/19 19/19
Compressors, Semihermetic Screw Qty per
2 2 2 2 2 2 2
Chiller
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, m2 21.8 24.5 27.2 27.2 30.0 32.7 32.7
Number of Rows 3 3 3 3 3 3 3
Fins per meter 669 669 669 669 669 669 669
Condenser Fans
Number, Ckt.-1/Ckt.-2 4/4 5/4 5/5 5/5 6/5 6/6 6/6
Low Sound Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 49082 55218 61353 61353 67488 73624 73624
Ultra Quiet Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 49082 55218 61353 61353 67488 73624 73624
Dual Speed Fans - Normal Speed
Fan, KWi 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Total Chiller, m3/s 42 47 52 52 57 62 62
Dual Speed Fans - Lower Speed
Fan, KWi 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Total Chiller, m3/s 32 36 40 40 44 48 48
High Static Fans
Fan, KWi 3.7 3.7 3.7 3.7 3.7 3.7 3.7
Total Chiller, m3/s 49 55 61 61 67 74 74
Evaporator, Direct Expansion
Water Volume, L 359.6 359.6 359.6 416.4 416.4 416.4 529.9
Maximum Water Side Pressure, bar 10 10 10 10 10 10 10
Maximum Refrigerant Side Pressure, bar 16 16 16 16 16 16 16
Minimum Chilled Water Flow Rate, L/s 10.1 10.1 10.1 11.4 11.4 11.4 11.4
Maximum Chilled Water Flow Rate, L/s 47.3 47.3 47.3 47.3 47.3 47.3 50.5
Water Connections, in. 10 10 10 10 10 10 10

64 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PHYSICAL DATA (SI - HIGH EFFICIENCY) (CONT'D)

HIGH EFFICIENCY
REFRIGERANT R-134a
MODEL NUMBER (YCIV____ E/V)
GENERAL UNIT DATA 60 HZ 0267 0287 0327 0357
Number of Independent Refrigerant Circuits 3 3 3 3
Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, kg 84 / 84 / 77 84 / 84 / 105 84 / 84 / 105 105 / 105 / 105
Oil Charge, Ckt.-1/Ckt.-2, L 19 / 19 / 15 19 / 19 / 19 19 / 19 / 19 19 / 19 / 19
Glycol Charge (43% concentration), L 0 0 0 0
Compressors, Semihermetic Screw
Quantity per Chiller 3 3 3 3
Condensers, High Efficiency Fin/Tube with Integral Subcooler
Total Chiller Coil Face Area, m2 38 44 44 49
Number of Rows 3 3 3 3
Fins per meter 669 669 669 669
Condenser Fans
Number, Ckt.-1/Ckt.-2 05/05/04 05/05/06 05/05/06 06/06/06
Low Noise Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 85904 98176 98176 110448
Ultra Quiet Fans
Fan Motor, HP/kWi 2/1.50 2/1.50 2/1.50 2/1.50
Total Chiller Airflow, L/s 85904 98176 98176 110448 6
Dual Speed Fans - Normal Speed
Fan, KWi 1.5 1.5 1.5 1.5
Total Chiller, m /s
3
73 83 83 93
Dual Speed Fans - Lower Speed
Fan, KWi 1.5 1.5 1.5 1.5
Total Chiller, m /s
3
56 63 63 71
High Static Fans
Fan, KWi 3.7 3.7 3.7 3.7
Total Chiller, m /s
3
92 117 117 129
Evaporator, Direct Expansion
Water Volume, L 764.6 764.6 893.3 893.3
Maximum Water Side Pressure, bar 10 10 10 10
Maximum Refrigerant Side Pressure, bar 16 16 16 16
Minimum Chilled Water Flow Rate, L/s 16 16 19 19
Maximum Chilled Water Flow Rate, L/s 76 76 76 76
Water Connections, mm 245 245 245 245

JOHNSON CONTROLS 65
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ELECTRICAL DATA
2 Compressor Power Wiring Connections

2 COMPRESSOR POWER WIRING CONNECTIONS

VSD CONTROL PANEL

STANDARD UNIT CONTROLS
CONTROL
VSD VSD TRANSFORMER EVAPORATOR HEATER
1 2

FAN
CONTACTORS
LINE
REACTOR

CIRCUIT
BREAKER

GRD
See Note 3

FIELD PROVIDED
UNIT POWER
SUPPLY

Figure 8 - TWO COMPRESSOR WIRING DIAGRAM WITH CIRCUIT BREAKER

2 COMPRESSOR POWER WIRING CONNECTIONS

VSD CONTROL PANEL

STANDARD UNIT CONTROLS
CONTROL
VSD VSD TRANSFORMER EVAPORATOR HEATER
1 2

FAN
CONTACTORS
LINE
REACTOR

TERMINAL
BLOCK
GRD

See Note 3

FIELD PROVIDED
UNIT POWER
SUPPLY

Figure 9 - TWO COMPRESSOR WIRING DIAGRAM WITH TERMINAL BLOCK

66 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ELECTRICAL DATA (CONT'D)

3 Compressor Power Wiring Connections
3 COMPRESSOR POWER WIRING CONNECTIONS

VSD CONTROL PANEL

VSD VSD VSD STANDARD UNIT CONTROLS
1 2 3 CONTROL
TRANSFORMER EVAPORATOR HEATER

FAN
CONTACTORS
LINE
REACTOR

CIRCUIT
BREAKER

GRD
See Note 3

FIELD PROVIDED
UNIT POWER
SUPPLY

Figure 10 - THREE COMPRESSOR WIRING DIAGRAM WITH CIRCUIT BREAKER – SINGLE POINT

3 COMPRESSOR POWER WIRING CONNECTIONS

VSD CONTROL PANEL

VSD VSD VSD STANDARD UNIT CONTROLS
1 2 3 CONTROL
TRANSFORMER EVAPORATOR HEATER

FAN
CONTACTORS
LINE
REACTOR

TERMINAL
BLOCK
GRD

See Note 3

FIELD PROVIDED
UNIT POWER
SUPPLY

Figure 11 - THREE COMPRESSOR WIRING DIAGRAM WITH TERMINAL BLOCK – SINGLE POINT

JOHNSON CONTROLS 67
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY 2-COMPRESSOR UNITS

One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).
STANDARD EFFICIENCY YCIV_ _ _ _ S/P/H
SYSTEM 1
MODEL NO./NAMEPLATE STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED
COND. FANS COND. FANS COND. FANS
CONDENSER CONDENSER CONDENSER
INPUT COMPRESSOR
YCIV INPUT COMPRESSOR FANS FANS COMPRESSOR FANS
VOLTS
S/P/H FREQ RLA (5) FLA FLA RLA (5) FLA
(9) QTY. RLA (5) QTY. QTY.
(EA) (EA) (EA)
460 60 120 4 2.8
0157
380 60 152 4 3.5 152 4 9.3
460 60 159 4 2.8
0177
380 60 201 4 3.5 201 4 9.3
460 60 162 5 2.8
0187
380 60 205 5 3.5 205 5 9.3
460 60 145 5 2.8
0207
380 60 184 5 3.5 184 5 9.3
460 60 162 5 2.8
0227
380 60 205 5 3.5 205 5 9.3
460 60 193 6 2.8
0247
380 60 245 6 3.5 245 6 9.3
460 60 191 6 2.8
0267
380 60 242 6 3.5 242 6 9.3

UNIT SHORT CIRCUIT FIELD WIRING & PROTECTION

WITHSTAND (KA) STD. & ULTRA QUIET COND. FANS
CONTROL MINIMUM RECOMMENDED MAX. IN- MAX DUAL
YCIV S/P/H TERMINAL CIRCUIT
KVA (7) CKT. FUSE/CKT. VERSE TIME ELEMENT
BLOCK BREAKER
AMPACITY BREAKER RAT- CKT. BRKR. FUSE
(STD) (OPT)
(MCA) (3) ING (4) RATING (2) SIZE (2)
1.8 30 65 293 350 400 400
0157
1.8 30 65 370 450 500 500
1.8 30 65 326 400 450 450
0177
1.8 30 65 413 500 600 600
1.8 30 65 348 400 500 500
0187
1.8 30 65 440 500 600 600
1.8 30 65 373 450 500 500
0207
1.8 30 65 472 600 600 600
1.8 30 65 392 450 500 500
0227
1.8 30 65 496 600 700 700
1.8 30 65 433 500 600 600
0247
1.8 30 65 547 700 700 700
1.8 30 65 464 600 600 600
0267
1.8 30 65 587 700 800 800
See page 92 for Electrical Data footnotes.

68 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY 2-COMPRESSOR UNITS (CONT'D)

One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).
STANDARD EFFICIENCY YCIV_ _ _ _ S/P/H
SYSTEM 2
STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED
COND. FANS COND. FANS COND. FANS
CONDENSER CONDENSER
CONDENSER FANS
COMPRESSOR FANS COMPRESSOR COMPRESSOR FANS
RLA (5) FLA RLA (5) FLA RLA (5) FLA
QTY. QTY. QTY.
(EA) (EA) (EA)
120 4 2.8
152 4 3.5 152 4 9.3
105 4 2.8
133 4 3.5 133 4 9.3
120 4 2.8
152 4 3.5 152 4 9.3
162 4 2.8
206 4 3.5 206 4 9.3
162 5 2.8
205 5 3.5 205 5 9.3
160 5 2.8
203 5 3.5 203 5 9.3
191 6 2.8
242 6 3.5 242 6 9.3
6

FIELD WIRING & PROTECTION

HIGH HEAD/HIGH STATIC FANS TWO-SPEED COND. FANS
MAX. MAX.
MINIMUM RECOMMENDED MAX DUAL MINIMUM RECOMMENDED MAX DUAL
INVERSE INVERSE
CKT. FUSE/CKT. ELEMENT CKT. FUSE/CKT. ELEMENT
TIME CKT. TIME CKT.
AMPACITY BREAKER RAT- FUSE AMPACITY BREAKER FUSE
BRKR. RAT- BRKR. RAT-
(MCA) (3) ING (4) SIZE (2) (MCA) (3) RATING (4) SIZE (2)
ING (2) ING (2)

417 500 500 500

459 600 600 600

492 600 700 700

525 600 700 700

554 700 700 700

610 700 800 800

657 800 800 800

JOHNSON CONTROLS 69
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY 2-COMPRESSOR UNITS (CONT'D)

STANDARD EFFICIENCY YCIV_ _ _ _ S/P/H
MODEL NO./NAME- FIELD WIRING LUGS
PLATE STD TERMINAL OPT CIRCUIT BREAK- STD TERMINAL OPT CIRCUIT
BLOCK STD., U.Q. ER STD., BLOCK HIGH HEAD/ BREAKER HIGH
& TWO-SPD COND. U.Q. & 2-SPD COND. HIGH STATIC COND. HEAD/HIGH STATIC
INPUT FANS FANS FANS COND. FANS
YCIV INPUT
VOLTS
S/P/H FREQ LUGS/ LUGS/ LUGS/ LUGS/
(9) LUG WIRE LUG WIRE LUG WIRE LUG WIRE
PHASE PHASE PHASE PHASE
RANGE RANGE RANGE RANGE
(1) (1) (1) (1)
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0157
#2 - 600 #2/0 - 500 #2 - 600 #3/0 - 400
380 60 2 2 3 3
KCM KCM KCM KCM
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0177
#2 - 600 #2/0 - 500 #2 - 600 #3/0 - 400
380 60 2 2 3 3
KCM KCM KCM KCM
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0187
#2 - 600 #2/0 - 500 #2 - 600 #3/0 - 400
380 60 2 2 3 3
KCM KCM KCM KCM
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0207
#2 - 600 #2/0 - 500 #2 - 600 #3/0 - 400
380 60 2 2 3 3
KCM KCM KCM KCM
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0227
#2 - 600 #2/0 - 500 #2 - 600 #3/0 - 400
380 60 2 2 3 3
KCM KCM KCM KCM
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0247
#2 - 600 #3/0 - 400 #2 - 600 #3/0 - 400
380 60 3 3 3 3
KCM KCM KCM KCM
#2 - 600 #2/0 - 500
460 60 2 2
KCM KCM
0267
#2 - 600 #3/0 - 400 #2 - 600 #3/0 - 400
380 60 3 3 3 3
KCM KCM KCM KCM

70 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 71
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 4/6/2018

HIGH EFFICIENCY 2-COMPRESSOR UNITS

One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).

HIGH EFFICIENCY YCIV_ _ _ _ E/V

SYSTEM 1
MODEL NO./NAME-
PLATE STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED
COND. FANS COND. FANS COND. FANS
CONDENSER CONDENSER CONDENSER
INPUT COMPRESSOR COMPRESSOR COMPRESSOR
YCIV INPUT FANS FANS FANS
VOLTS
E/V FREQ FLA FLA FLA
(9) RLA (5) QTY. RLA (5) QTY. RLA (5) QTY.
(EA) (EA) (EA)
460 60 110 4 2.8
0157
380 60 139 4 3.5 139 4 9.3
460 60 111 5 2.8
0177
380 60 141 5 3.5 141 5 9.3
460 60 154 5 2.8
0187
380 60 195 5 3.5 195 5 9.3
460 60 141 5 2.8
0197
380 60 179 5 3.5 179 5 9.3
460 60 141 6 2.8
0207
380 60 179 6 3.5 179 6 9.3
460 60 150 6 2.8
0227
380 60 190 6 3.5 190 6 9.3
460 60 194 6 2.8
0247
380 60 245 6 3.5 245 6 9.3

UNIT SHORT CIRCUIT WITH- FIELD WIRING & PROTECTION

STAND (KA) STD. & ULTRA QUIET COND. FANS
YCIV CONTROL MINI- RECOMMEND- MAX. IN- MAX DUAL
E/V KVA (7) CIRCUIT
TERMINAL MUM CKT. ED FUSE/CKT. VERSE TIME ELEMENT
BREAKER
BLOCK (STD) AMPACITY BREAKER RAT- CKT. BRKR. FUSE
(OPT)
(MCA) (3) ING (4) RATING (2) SIZE (2)
1.8 30 65 270 300 350 350
0157
1.8 30 65 341 400 450 450
1.8 30 65 288 350 400 400
0177
1.8 30 65 365 450 500 500
1.8 30 65 325 400 450 450
0187
1.8 30 65 411 500 600 600
1.8 30 65 345 400 450 450
0197
1.8 30 65 437 500 600 600
1.8 30 65 362 450 500 500
0207
1.8 30 65 458 600 600 600
1.8 30 65 371 450 500 500
0227
1.8 30 65 469 600 600 600
1.8 30 65 424 500 600 600
0247
1.8 30 65 536 700 700 700
See page 92 for Electrical Data footnotes.

72 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY 2-COMPRESSOR UNITS (CONT'D)

One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).

HIGH EFFICIENCY YCIV_ _ _ _ E/V

SYSTEM 2

STD. & ULTRA QUIET COND. FANS HIGH HEAD/STATIC COND. FANS TWO-SPEED COND. FANS
CONDENSER CONDENSER CONDENSER
COMPRESSOR COMPRESSOR COMPRESSOR
FANS FANS FANS
FLA FLA FLA
RLA (5) QTY. RLA (5) QTY. RLA (5) QTY.
(EA) (EA) (EA)
110 4 2.8
139 4 3.5 139 4 9.3
122 4 2.8
154 4 3.5 154 4 9.3
105 5 2.8
132 5 3.5 132 5 9.3
141 5 2.8
179 5 3.5 179 5 9.3
152 5 2.8
193 5 3.5 193 5 9.3
150 6 2.8
190 6 3.5 190 6 9.3
149 6 2.8 6
188 6 3.5 188 6 9.3

FIELD WIRING & PROTECTION

HIGH HEAD/HIGH STATIC FANS TWO-SPEED COND. FANS
MAX. MAX.
MINIMUM RECOMMENDED MAX DUAL MINIMUM RECOMMENDED MAX DUAL
INVERSE INVERSE
CKT. FUSE/CKT. ELEMENT CKT. FUSE/CKT. ELEMENT
TIME CKT. TIME CKT.
AMPACITY BREAKER RAT- FUSE AMPACITY BREAKER RAT- FUSE
BRKR. RAT- BRKR.
(MCA) (3) ING (4) SIZE (2) (MCA) (3) ING (4) SIZE (2)
ING (2) RATING (2)

388 450 500 500

417 500 500 500

469 600 600 600

495 600 600 600

522 600 700 700

539 600 700 700

606 700 800 800

JOHNSON CONTROLS 73
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY 2-COMPRESSOR UNITS (CONT'D)

HIGH EFFICIENCY YCIV_ _ _ _ E/V
FIELD WIRING LUGS
MODEL NO./NAMEPLATE
STD TERMINAL OPT CIRCUIT STD TERMINAL OPT CIRCUIT
BLOCK STD., BREAKER STD., BLOCK HIGH BREAKER HIGH
U.Q. & TWO-SPD U.Q. & 2-SPD HEAD/HIGH STAT- HEAD/HIGH STAT-
INPUT COND. FANS COND. FANS IC COND. FANS IC COND. FANS
INPUT
YCIV E/V VOLTS
FREQ
(9) LUGS/ LUG LUGS/ LUG LUGS/ LUG LUGS/ LUG
PHASE WIRE PHASE WIRE PHASE WIRE PHASE WIRE
(1) RANGE (1) RANGE (1) RANGE (1) RANGE
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0157
#2 - 600 #2 - 600 #3/0 -
380 60 2 2 #2/0 - 500 KCM 3 3
KCM KCM 400 KCM
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0177
#2 - 600 #2 - 600 #3/0 -
380 60 2 2 #2/0 - 500 KCM 3 3
KCM KCM 400 KCM
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0187
#2 - 600 #2 - 600 #3/0 -
380 60 2 2 #2/0 - 500 KCM 3 3
KCM KCM 400 KCM
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0197
#2 - 600 #2 - 600 #3/0 -
380 60 2 2 #2/0 - 500 KCM 3 3
KCM KCM 400 KCM
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0207
#2 - 600 #2 - 600 #3/0 -
380 60 2 2 #2/0 - 500 KCM 3 3
KCM KCM 400 KCM
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0227
#2 - 600 #2 - 600 #3/0 -
380 60 2 2 #2/0 - 500 KCM 3 3
KCM KCM 400 KCM
#2 - 600
460 60 2 2 #2/0 - 500 KCM
KCM
0247
#2 - 600 #2 - 600 #3/0 -
380 60 3 3 #3/0 - 400 KCM 3 3
KCM KCM 400 KCM

74 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

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JOHNSON CONTROLS 75
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY 3-COMPRESSOR UNITS

One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).

SYSTEM 1 SYSTEM 2
MODEL NO./NAME-
PLATE STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED STD. & ULTRA QUIET
COND. FANS COND. FANS COND. FANS COND. FANS
CONDENSER CONDENSER CONDENSER CONDENSER
INPUT COMP. COMP. COMP. COMP.
YCIV INPUT FANS FANS FANS FANS
VOLTS
S/P/H FREQ RLA FLA RLA FLA RLA FLA RLA FLA
(9) QTY. QTY. QTY. QTY.
(5) (EA) (5) (EA) (5) (EA) (5) (EA)
460 60 146 5 2.8 164 4 2.8
0287
380 60 184 5 3.5 184 5 9.3 207 4 3.5
460 60 147 5 2.8 147 5 2.8
0307
380 60 186 5 3.5 186 5 9.3 186 5 3.5
460 60 160 5 2.8 160 5 2.8
0357
380 60 202 5 3.5 202 5 9.3 202 5 3.5
460 60 191 6 2.8 191 6 2.8
0397
380 60 241 6 3.5 241 6 9.3 241 6 3.5

FIELD WIRING & PROTECTION

UNIT SHORT CIRCUIT
WITHSTAND (KA) STD. & ULTRA QUIET HIGH HEAD/HIGH
COND. FANS STATIC FANS
CON- MAX. IN-
YCIV VERSE MAX
TROL MINIMUM RECOMMEND- MINIMUM RECOMMENDED
S/P/H TERMINAL CIRCUIT TIME DUAL
KVA (7) CKT. ED FUSE/CKT. CKT. FUSE/CKT.
BLOCK BREAK- CKT. ELEMENT
AMPACITY BREAKER RAT- AMPACITY BREAKER RAT-
(STD) ER (OPT) BRKR. FUSE
(MCA) (3) ING (4) (MCA) (3) ING (4)
RATING SIZE (2)
(2)

2.4 30 65 494 600 600 600

0287
2.4 30 65 624 700 800 800 676 800

2.4 30 65 540 600 700 700

0307
2.4 30 65 682 800 800 800 731 800

2.4 30 65 607 700 800 800

0357
2.4 30 65 766 1000 1000 1000 827 1000

2.4 30 65 671 800 800 800

0397
2.4 30 65 847 1000 1000 1000 911 1000

See page 92 for Electrical Data footnotes.

76 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY 3-COMPRESSOR UNITS (CONT'D)

(One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).

SYSTEM 2 SYSTEM 3
HIGH HEAD/STATIC TWO-SPEED STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED
COND. FANS COND. FANS COND. FANS COND. FANS COND. FANS
CONDENS- CONDENS- CONDENS- CONDENS- CONDENS-
COMP. COMP. COMP. COMP. COMP.
ER FANS ER FANS ER FANS ER FANS ER FANS
RLA FLA RLA FLA RLA FLA RLA FLA RLA FLA
QTY. QTY. QTY. QTY. QTY.
(5) (EA) (5) (EA) (5) (EA) (5) (EA) (5) (EA)
108 4 2.8
207 4 9.3 136 4 3.5 136 4 9.3
165 4 2.8
186 5 9.3 208 4 3.5 208 4 9.3
193 6 2.8
202 5 9.3 244 6 3.5 244 6 9.3
191 6 2.8
241 6 9.3 241 6 3.5 241 6 9.3

FIELD WIRING & PROTECTION FIELD WIRING LUGS

HIGH HEAD/HIGH TWO-SPEED
6
STATIC FANS COND. FANS
STD TERMINAL OPT CIRCUIT
MAX. MAX. BLOCK BREAKER
MAX MAX
INVERSE MINIMUM RECOMMENDED INVERSE
DUAL DUAL
TIME CKT. CKT. FUSE/CKT. TIME CKT.
ELEMENT ELEMENT
BRKR. AMPACITY BREAKER RAT- BRKR.
FUSE FUSE LUGS/ LUG LUGS/ LUG
RATING (MCA) (3) ING (4) RATING
SIZE (2) SIZE (2) PHASE WIRE PHASE WIRE
(2) (2)
(1) RANGE (1) RANGE
#2 - 600 #4/0 -
4 4
KCM 500 KCM
#2 - 600 #4/0 -
800 800 4 4
KCM 500 KCM
#2 - 600 #4/0 -
4 4
KCM 500 KCM
#2 - 600 #4/0 -
800 800 4 4
KCM 500 KCM
#2 - 600 #4/0 -
4 4
KCM 500 KCM
#2 - 600 #4/0 -
1000 1000 4 4
KCM 500 KCM
#2 - 600 #4/0 -
4 4
KCM 500 KCM
#2 - 600 #4/0 -
1000 1000 4 4
KCM 500 KCM

JOHNSON CONTROLS 77
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY 3-COMPRESSOR UNITS

(One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).

SYSTEM 1 SYSTEM 2
MODEL NO./NAME-
STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED COND. STD. & ULTRA QUIET
PLATE
COND. FANS COND. FANS FANS COND. FANS
CONDENSER CONDENSER CONDENSER CONDENSER
INPUT COMP. COMP. COMP. COMP.
YCIV INPUT FANS FANS FANS FANS
VOLTS
E/V FREQ RLA FLA RLA FLA RLA FLA RLA FLA
(9) QTY. QTY. QTY. QTY.
(5) (EA) (5) (EA) (5) (EA) (5) (EA)
460 60 142 5 2.8 142 5 2.8
0267
380 60 179 5 3.5 179 5 9.3 179 4 3.5
460 60 137 5 2.8 137 5 2.8
0287
380 60 173 5 3.5 173 5 9.3 173 5 3.5
460 60 152 5 2.8 152 5 2.8
0327
380 60 193 5 3.5 193 5 9.3 193 5 3.5
460 60 181 6 2.8 181 6 2.8
0357
380 60 229 6 3.5 229 6 9.3 229 6 3.5

Field Wiring & Protection

Unit Short Circuit
Withstand (KA) Std. & Ultra Quiet Cond. Fans High Head/High Static Fans
YCIV Control Max.
Mini- Recommend- Max Dual Minimum Recommended
S/P/H KVA (7) Terminal Circuit Inverse
mum Ckt. ed Fuse/Ckt. Element Ckt. Fuse/Ckt.
Block Breaker Time Ckt.
Ampacity Breaker Fuse Ampacity Breaker
(STD) (OPT) Brkr. Rat-
(MCA) (3) Rating (4) Size (2) (MCA) (3) Rating (4)
ing (2)

2.4 30 65 463 600 600 600

0287
2.4 30 65 581 700 700 700 632 800

2.4 30 65 486 600 600 600

0307
2.4 30 65 610 700 700 700 659 800

2.4 30 65 528 600 600 600

0357
2.4 30 65 667 800 800 800 728 800

2.4 30 65 598 700 700 700

0397
2.4 30 65 755 800 800 800 818 1000

See page 92 for Electrical Data footnotes.

78 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY 3-COMPRESSOR UNITS (CONT'D)

(One Field Provided Power Supply Circuit. Field Connections to Factory provided
Terminal Block (Standard); or Individual System Breakers (Optional).

SYSTEM 2 SYSTEM 3
HIGH HEAD/STATIC TWO-SPEED COND. STD. & ULTRA QUIET HIGH HEAD/STATIC TWO-SPEED COND.
COND. FANS FANS COND. FANS COND. FANS FANS
CONDENSER CONDENSER CONDENSER CONDENSER CONDENSER
COMP. COMP. COMP. COMP. COMP.
FANS FANS FANS FANS FANS
RLA FLA RLA FLA RLA FLA RLA FLA RLA FLA
QTY. QTY. QTY. QTY. QTY.
(5) (EA) (5) (EA) (5) (EA) (5) (EA) (5) (EA)
105 4 2.8
179 4 9.3 133 4 3.5 133 4 9.3
137 5 2.8
173 5 9.3 173 4 3.5 173 4 9.3
141 6 2.8
193 5 9.3 178 6 3.5 178 6 9.3
139 6 2.8
229 6 9.3 176 6 3.5 176 6 9.3

Field Wiring & Protection Field Wiring Lugs

High Head/High Static STD Terminal OPT Circuit
Two-Speed Cond. Fans
Fans Block Breaker
Max. Max.
Inverse
Max Dual Minimum Recommended
Inverse
Max Dual
Lugs/ Lugs/ 6
Element Ckt. Fuse/Ckt. Element Lug Wire Lug Wire
Time Ckt. Time Ckt. Phase Phase
Fuse Ampacity Breaker Fuse Range Range
Brkr. Rat- Brkr. Rat- (1) (1)
Size (2) (MCA) (3) Rating (4) Size (2)
ing (2) ing (2)
#2 - 600 #4/0 - 500
4 4
KCM KCM
#2 - 600 #4/0 - 500
800 800 4 4
KCM KCM
#2 - 600 #4/0 - 500
4 4
KCM KCM
#2 - 600 #4/0 - 500
800 800 4 4
KCM KCM
#2 - 600 #4/0 - 500
4 4
KCM KCM
#2 - 600 #4/0 - 500
800 800 4 4
KCM KCM
#2 - 600 #4/0 - 500
4 4
KCM KCM
#2 - 600 #4/0 - 500
1000 1000 4 4
KCM KCM

JOHNSON CONTROLS 79
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ELECTRICAL NOTES
1. As standard, all units have single point power con- 4. Recommended time delay or dual element fuse
nection. Contact factory for information regarding size - 150%of the largest compressor RLA plus
dual point power units. 100% of the remaining compressor RLA’s plus
the sum of all condenser fan FLA’s.
2. Maximum Inverse Time Circuit Breaker or Dual
Element Fuse - 225% of the largest compressor 5. RLA - Rated Load Amps - rated in accordance
RLA plus the sum of all the other loads per NEC with UL standard 1995.
440.22 (A).
6. Local codes may take precedence.
3. MCA - Minimum Circuit Ampacity - 125% of the
7. Control KVA includes operational controls and
largest compressor RLA plus 100% of the remain-
evaporator heaters.
ing compressor RLA’s plus the sum of all con-
denser fan FLA’s per NEC 440.33 8. System inrush current is less than RLA due to the
use of York Variable Speed Drive technology.

Table 1 - TYPICAL COMPRESSOR STARTING CURRENT (FIRST FOUR SECONDS OF START-UP)

RATED VOLTAGE TYPICAL STARTING CURRENT PER COMPRESSOR

380-400/50/3 28 A
380/60/3 29 A
460/60/3 23 A

Table 2 - VOLTAGE UTILIZATION RANGE

RATED VOLTAGE UTILIZATION RANGE
380-415/50/3 360-440
380/60/3 342-402
460/60/3 414-508

NOTES:
1. U.L. Label is provided on 60 Hz units for these electrical wiring configurations.
2. –– –– –– –– –– –– Dashed Line = Field Provided Wiring.
3. The above recommendations are based on the National Electric Code and using copper conductors only. Field wiring must also comply with
local codes. Group Rated breaker must be HACR type for cUL machines.

Electrical Notes - Legend

C.B. Circuit Breaker
D.E. Dual Element Fuse
DISC SW Disconnect Switch
FACT CB Factory-Mounted Circuit Breaker
FLA Full Load AMPS
HZ Hertz
MAX Maximum
MCA Minimum Circuitry AMPACITY
MIN Minimum
MIN NF Minimum Non Fused
RLA Rated Load AMPS
S.P. WIRE Single Point Wiring

80 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 81
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ELECTRICAL WIRING DIAGRAMS - 2 COMPRESSOR MODELS

LD26907

Figure 12 - ELEMENTARY CONTROL WIRING DIAGRAM 2 COMPRESSOR MODELS

82 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-19905-001
REV K, SHT.1

LD26908

FIGURE 12 - ELEMENTARY CONTROL WIRING DIAGRAM 2 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 83
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Elementary Power Wiring Diagram

LD26909

LD13678

Figure 13 - ELEMENTARY POWER WIRING DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS

84 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-19905-002
REV J, SHT.1

LD26910

LD13679

FIGURE 13 - ELEMENTARY POWER WIRING DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 85
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Power Wiring Connection Diagram

LD26912

Figure 14 - POWER WIRING CONNECTION DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS

86 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-19905-004
REV L, SHT. 1

LD26911

FIGURE 14 - POWER WIRING CONNECTION DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 87
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Control Wiring Connection Diagram

LD26913

Figure 15 - CONTROL WIRING CONNECTION DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS

88 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-19905-003
REV L, SHT. 1

LD26914

FIGURE 15 - CONTROL WIRING CONNECTION DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 89
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-19905-003
REV L, SHT. 1

LD26921

FIGURE 15 - CONTROL WIRING CONNECTION DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS (CONT'D)

90 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Power Elementary Wiring Diagram

LD13081

Figure 16 - POWER ELEMENTARY WIRING DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS

JOHNSON CONTROLS 91
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

LD13082

FIGURE 16 - POWER ELEMENTARY WIRING DIAGRAM - YCIV0157-0267 2 COMPRESSOR MODELS (CONT'D)

92 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Location Label - 2 Compressor Models

LD10519

JOHNSON CONTROLS 93
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Panel Layout - 2 Compressor Models

94 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 95
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ELECTRICAL WIRING DIAGRAMS - 3 COMPRESSOR MODELS

LD26915

Figure 17 - CONTROL ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS

96 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-20326-001
REV I, SHT. 1

LD26916

FIGURE 17 - CONTROL ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 97
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

LD26917

FIGURE 17 - CONTROL ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS (CONT'D)

98 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-20326-002
REV H, SHT.1

LD26918

FIGURE 17 - CONTROL ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 99
FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Power Elementary Diagram

LD26919

Figure 18 - POWER ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS

100 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-23260-003
REV F, SHT. 1

LD26920

FIGURE 18 - POWER ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 101

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Control Wiring Connection Diagram

LD13090

Figure 19 - CONTROL WIRING CONNECTION DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS

102 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

LD13091

FIGURE 19 - CONTROL WIRING CONNECTION DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS

(CONT'D)

JOHNSON CONTROLS 103

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

LD13092

FIGURE 19 - CONTROL WIRING CONNECTION DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS

(CONT'D)

104 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 105

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Power Wiring Connection Diagram

LD26922

Figure 20 - POWER WIRING CONNECTION DIAGRAM - YCIV1050-1500 3 COMPRESSOR MODELS

106 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

035-20326-005
REV H, SHT.1

LD26923

FIGURE 20 - POWER WIRING CONNECTION DIAGRAM - YCIV1050-1500 3 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 107

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Power Elementary Diagram

LD13097

Figure 21 - POWER ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS

108 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

LD13098

FIGURE 21 - POWER ELEMENTARY DIAGRAM - YCIV0257-0397 3 COMPRESSOR MODELS (CONT'D)

JOHNSON CONTROLS 109

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Location Label - 3 Compressor Models

LD13096

110 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Panel Layout - 3 Compressor Models

LD13099

JOHNSON CONTROLS 111

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 AND 3 COMPRESSOR SI

MODELS YCIV0157E/V AND YCIV0157S/P/H
CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER ENTRY
POWER ENTRY
4" 10"
10" WIDE
WIDE XX 13"
13" HIGH
HIGH

VIEW B-B
1 3/4"
12"
POWER ENTRY IS ON BOTTOM OF PANEL
VIEW C-C

B B
C

B (EDGE OF UNIT
TO COOLER
CONNECTION)

88 1/8"

VIEW A-A

YCIV A B C D
0157E/V 19.1" 28.1" 84.5" 112.8"
0157S/P/H 17.4" 29.1" 90.0" 110.1"

Placement on a level surface of free of Johnson Controls unit controls will op-
obstructions (including snow, for winter timize operation without nuisance high-
operation) or air circulation ensures rated pressure safety cutouts; however, the
performance, reliable operation, and ease system designer must consider potential
of maintenance. Site restrictions may performance degradation. Access to the
compromise minimum clearances indi- unit control center assumes the unit is no
cated below, resulting in unpredictable higher than on spring isolators. Recom-
airflow patterns and possible diminished mended minimum clearances: side to wall
performance. – 2 m; rear to wall – 2 m; control panel to
end wall – 1.2 m; top – no obstructions
whatsoever; distance between adjacent
units – 3 m. No more than one adjacent
wall may be higher than the unit.

112 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 AND 3 COMPRESSOR ENGLISH (CONT'D)

5/8" MOUNTING CG
HOLES (TYP)

ORIGIN

CONTROL PANEL
60"

14 1/8"

1 5/16" (TYP)

101 5/8" 50" 50 5/16" 9 1/8"

6
VIEW D-D

D
D

93 15/16"

45 5/16"

10" 10" A
WATER OUTLET WATER INLET
(3) RIGGING HOLES
EACH SIDE (3 X 2)
C D Z
80" 103 3/8" 33 5/16"

230" X
CG
POWER: SINGLE POINT WITH TERMINAL BLOCK

JOHNSON CONTROLS 113

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 AND 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0177E/V, YCIV0177S/P/H, YCIV0187E/V and YCIV0187S/P/H

CONTROL ENTRY
1 1/2" 3" WIDE X 13 1/2" HIGH

POWER ENTRY
4" 10" WIDE X 13" HIGH
POWER ENTRY
10" WIDE X 13"
HIGH
VIEW B-B 1 3/4" 12"

POWER ENTRY IS ON BOTTOM OF PANEL

VIEW C-C

B B

19 1/8"

28 1/8" (EDGE19
OF UNIT
-1/8"
TO COOLER
CONNECTION)
28-1/8" (EDGE OF
88 1/8"
UNIT TO COOLER
CONNECTION)
VIEW A-A

YCIV A B
0177E/V 88.1" 274.0"
0177S/P/H 80.0" 230.0"
0187E/V 88.1" 274.0"
0187S/P/H 88.1" 274.0"

114 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 AND 3 COMPRESSOR ENGLISH (CONT'D)

5/8" MOUNTING
HOLES (TYP)

C
G
X

CONTROL PANEL
60"

1 5/16" (TYP) 14 1/8"

69 11/16" 86 5/16" 50" 50 5/16" 9 1/8"

VIEW D-D

6
A

D D

93 15/16"

45 5/16"

10" (WATER OUTLET) 10" (WATER INLET) A

(3) RIGGING HOLES
EACH SIDE 3 X 2 84 1/2" 112 13/16"

A 103 5/16" 33 5/16"

Z
B
POWER: SINGLE POINT WITH TERMINAL BLOCK
X
C
G

JOHNSON CONTROLS 115

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0197E/V, YCIV0207S/P/H, and YCIV0227S/P/H

CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER ENTRY
POWER
4" 10"WIDE
10" WIDEXX13"
13" HIGH
HIGH

VIEW B-B 1 3/4" 12"

POWER ENTRY IS ON BOTTOM OF PANEL
VIEW C-C

B B

A
B (EDGE OF UNIT
TO COOLER
CONNECTION)
88 1/8"

VIEW A-A

YCIV A B C D
0197E/V 20.4" 28.1" 85.6" 112.3"
0207S/P/H 22.2" 26.0" 79.1" 113.3"
0227S/P/H 22.2" 26.0" 79.1" 113.3

116 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

5/8" MOUNTING
HOLES (TYP)
C
G
X

CONTROL PANEL
60"

1 5/16" (TYP) 14 1/8"

69 11/16" 86 5/16" 50" 50 5/16" 9 1/8"

VIEW D-D

A
6
D D

93 15/16"

45 5/16"

10" (WATER OUTLET) 10" (WATER INLET)

(3) RIGGING HOLES A
EACH SIDE 3 X 2 C D
88" 103 5/16" 33 5/16"

Z
274"

POWER: SINGLE POINT WITH TERMINAL BLOCK X

JOHNSON CONTROLS 117

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0207E/V and YCIV0227E/V

CONTROL ENTRY
3" WIDE X
CONTROL 13 1/2" HIGH
ENTRY
1 1/2" 3" WIDE X 13-1/2" HIGH

POWER ENTRY
POWER ENTRY
4" 10" WIDE
WIDEXX13"
13" HIGH
10"
HIGH

VIEW B-B 1 3/4"

12"
POWER ENTRY IS ON BOTTOM OF PANEL VIEW C-C

B B

20 3/8"
20-3/8"

28 1/8" (EDGE OF UNIT

TO COOLER
CONNECTION)
88 1/8"

VIEW A-A

118 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

X C
G
5/8" MOUNTING HOLES (TYP)

ORIGIN

CONTROL PANEL
60"

1 5/16" (TYP)

14 1/8"

37 13/16"
60" 49 3/16" 64 3/16" 50 5/16" 9 1/8"

VIEW D-D

D D

93 15/16"

45 5/16"

10" (WATER INLET)

10" (WATER OUTLET)
(4) RIGGING HOLES A
85 5/8" 112 5/16"
EACH SIDE 3 X 2
284 7/8" 180 11/16" 92 11/16" 33 5/16"

318" Z

POWER: SINGLE POINT WITH TERMINAL BLOCK

X C
G

JOHNSON CONTROLS 119

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0247S/P/H, YCIV0247E/V, and YCIV0267S/P/H

CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER
POWER ENTRY
ENTRY
4" 10" WIDE X 13" HIGH
10" WIDE X 13"
HIGH

VIEW B-B
1 3/4"
12"
POWER ENTRY IS ON BOTTOM OF PANEL VIEW C-C

B B

22 3/16"

26" (EDGE OF UNIT

TO COOLER
CONNECTION)
88 1/8"

VIEW A-A

120 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

X C
G
5/8" MOUNTING HOLES (TYP)

ORIGIN

APPROX. OPERATING
WEIGHT DISTRIBUTING (LB)

CONTROL PANEL
60"

1 5/16" (TYP)

14 1/8"

37 13/16"
60" 49 3/16" 64 3/16" 50 5/16" 9 1/8"

VIEW D-D

D D

93 15/16"

45 5/16"

10" (WATER INLET)

(4) RIGGING HOLES 10" (WATER OUTLET) A
EACH SIDE 3 X 2 79 1/8" 113 5/16"
284 7/8" 180 11/16" 92 11/16" 33 5/16"

318"

POWER: SINGLE POINT WITH TERMINAL BLOCK Z

X C
G

JOHNSON CONTROLS 121

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0267E/V, and YCIV0287S/P/H

CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER
POWER
POWER ENTRY
ENTRY
ENTRY
4" 10" WIDE X 13" HIGH
10" WIDE
10" WIDE X
X 13"
13" HIGH
HIGH

VIEW B-B
1 3/4" 12"
POWER ENTRY IS ON BOTTOM OF PANEL
VIEW C-C

B B

88 1/8"
VIEW A-A

122 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

CG
X

3/4" MOUNTING HOLES (TYP) Y

ORIGIN

CONTROL PANEL
70"

1 5/16" (TYP)
9 1/8"

7 5/8"

83 1/8" 80 3/16" 93 5/8" 53" 49" 9 1/8"

D D

93 15/16"

17 5/8"
45 5/16"

29 7/8"

Z
10" (WATER INLET) 10" (WATER OUTLET)
(4) RIGGING HOLES A
14 5/8" 197 13/16" CG
EACH SIDE 3 X 2 X
357" 238 5/8" 141 1/8" 33 3/16"

377 3/16"

LD13668

JOHNSON CONTROLS 123

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0287E/V

CONTROL ENTRY
1 1/2" 3" WIDE X 13 1/2" HIGH

POWER ENTRY
POWER ENTRY
4" 10"
10" WIDE
WIDE XX 13"
13" HIGH
HIGH

VIEW B-B 1 3/4" 12"

POWER ENTRY IS ON BOTTOM OF PANEL

VIEW C-C

B B

88 1/8"

VIEW A-A

124 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

3/4" MOUNTING HOLES (TYP)

X CG

Y
ORIGIN

CONTROL PANEL
70"

1 5/16" (TYP)

9 1/8"

7 5/8"

9 1/8"
6
53 3/8" 19" 99" 76" 50" 50 5/16"

VIEW D-D

D D

93 15/16"

17 5/8"

45 5/16"

29 7/8"

(5) RIGGING HOLES

10" (WATER INLET) 10" (WATER OUTLET)
EACH SIDE 3 X 2 A
14 5/8" 197 13/16"
Z
401" 320 1/2" 216 11/16" 123 11/16" 37 3/16"
X
CG
421 1/4"

LD13669

JOHNSON CONTROLS 125

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0307S/P/H

CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER ENTRY
POWER ENTRY
4" 10" WIDE X 13" HIGH
10" WIDE X 13"
HIGH

VIEW B-B
1 3/4"
12"
POWER ENTRY IS ON BOTTOM OF PANEL
VIEW C-C

B B

88 1/8"
VIEW A-A

126 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

X CG

3/4" MOUNTING HOLES (TYP) Y

ORIGIN

CONTROL PANEL
70"

1 5/16" (TYP)
9 1/8"

7 5/8"

83 1/8" 80 3/16" 93 5/8" 53" 49" 9 1/8"

D D

93 15/16"

16 3/16"
45 5/16"

26 3/8"

Z
10" (WATER INLET) 10" (WATER OUTLET) A
(4) RIGGING HOLES
EACH SIDE 3 X 2 15" 197 13/16"
X CG
357" 238 5/8" 141 1/8" 33 3/16"

377 3/16"

LD13670

JOHNSON CONTROLS 127

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0327E/V and YCIV0357S/P/H

CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER
POWER ENTRY
ENTRY
4" 10" WIDE
10" WIDE XX 13"
13" HIGH
HIGH

VIEW B-B
1 3/4" 12"
POWER ENTRY IS ON BOTTOM OF PANEL
VIEW C-C

B B

88 1/8"

VIEW A-A

128 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

3/4" MOUNTING HOLES (TYP)

X CG

ORIGIN Y

CONTROL PANEL
70"

1 5/16" (TYP)

9 1/8"

6 7/8"

53 3/8" 74 1/8" 99" 76" 50" 50 5/16" 9 1/8"

6
VIEW D-D

D D

93 15/16"

18 3/16"

45 5/16"
25 1/8"

(5) RIGGING HOLES

EACH SIDE 3 X 2 10" (WATER INLET) 10" (WATER OUTLET)
15" 197 13/16" A

Z
401" 320 1/2" 216 11/16" 120 11/16" 33 3/16"

X CG
421 1/4"

LD13671

JOHNSON CONTROLS 129

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

Models YCIV0357E/V and YCIV0397S/P/H

CONTROL ENTRY
3" WIDE X 13 1/2" HIGH
1 1/2"

POWER ENTRY
POWER ENTRY
4" 10" WIDE
10" WIDE XX 13"
13" HIGH
HIGH

VIEW B-B
1 3/4"
12"
POWER ENTRY IS ON BOTTOM OF PANEL
VIEW C-C

B B

88 1/8"
VIEW A-A

130 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DIMENSIONS - 2 & 3 COMPRESSOR ENGLISH (CONT'D)

3/4" MOUNTING HOLES (TYP)

ORIGIN
X CG

CONTROL PANEL
70"

1 5/16" (TYP)
9 1/8"

6 7/8"

53 3/8" 19" 112 11/16" 76" 50" 50 5/16" 9 1/8"

VIEW D-D
6
A

D
D

93 15/16"

18 3/16"

45 5/16"

28 3/8"

(5) RIGGING HOLES 10" (WATER INLET) 10" (WATER OUTLET) A

EACH SIDE 3 X 2
15" 197 13/16"

445" 328 1/8" 217 13/16" 120 11/16" 33 3/16"

465 3/16" Z
CG
X

LD13672

JOHNSON CONTROLS 131

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

TECHNICAL DATA - CLEARANCES

(2 m)

(1.3 m) (2 m)
(2 m)

LD10506A

NOTES:
1. No obstructions allowed above the unit.
2. Only one adjacent wall may be higher than the unit
3. Adjacent units should be 10 feet (3 meters) apart.

132 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ISOLATOR INFORMATION FOR UNITS SHIPPED ON

OR AFTER JUNE 15, 2008

ISOLATOR SELECTION AND MOUNTING

STANDARD EFFICIENCY, ENGLISH
Units shipped on or after June 15, 2008

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL

y R1 R2 R3 R4 R5 R6 R7

x
ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB
YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (211, 86.8)
Al Fin Coils 1702 1592 1396 1340
Cu Fin Coils 1702 1704 1739 1682
RS&LS1/Al Fin Coils 1881 1770 1396 1340
RS&LS1/Cu Fin Coils 1881 1883 1739 1682
0157S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (211, 1.3) 6
Al Fin Coils 1702 1592 1396 1340
Cu Fin Coils 1702 1704 1739 1682
RS&LS1/Al Fin Coils 1881 1770 1396 1340
RS&LS1/Cu Fin Coils 1881 1883 1739 1682
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (211, 86.8)
Al Fin Coils 1720 1614 1667 1609
Cu Fin Coils 1720 1726 2011 1951
RS&LS1/Al Fin Coils 1898 1792 1667 1609
RS&LS1/Cu Fin Coils 1898 1905 2011 1951
0177S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (211, 1.3)
Al Fin Coils 1702 1594 1667 1609
Cu Fin Coils 1702 1706 2011 1951
RS&LS1/Al Fin Coils 1881 1773 1667 1609
RS&LS1/Cu Fin Coils 1881 1885 2011 1951
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (195.7, 86.8) (265.4, 86.8)
Al Fin Coils 1715 1579 1559 1274 774
Cu Fin Coils 1715 1700 1898 1653 935
RS&LS1/Al Fin Coils 1894 1757 1559 1274 774
RS&LS1/Cu Fin Coils 1894 1878 1898 1653 935
0187S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (195.7, 1.3) (265.4, 1.3)
Al Fin Coils 1698 1559 1559 1241 664
Cu Fin Coils 1698 1680 1898 1620 825
RS&LS1/Al Fin Coils 1876 1737 1559 1241 664
RS&LS1/Cu Fin Coils 1876 1858 1898 1620 825
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 133

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, ENGLISH (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (195.7, 86.8) (265.4, 86.8)
Al Fin Coils 1728 1680 1768 1512 915
Cu Fin Coils 1728 1801 2108 1892 1076
RS&LS1/Al Fin Coils 1907 1858 1768 1512 915
RS&LS1/Cu Fin Coils 1907 1980 2108 1892 1076
0207S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (195.7, 1.3) (265.4, 1.3)
Al Fin Coils 1728 1676 1764 1475 800
Cu Fin Coils 1728 1797 2108 1854 961
RS&LS1/Al Fin Coils 1907 1854 1764 1475 800
RS&LS1/Cu Fin Coils 1907 1975 2103 1854 961
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (195.7, 86.8) (265.4, 86.8)
Al Fin Coils 1728 1680 1768 1523 959
Cu Fin Coils 1728 1801 2108 1903 1120
RS&LS1/Al Fin Coils 1907 1858 1768 1523 959
RS&LS1/Cu Fin Coils 1907 1980 2108 1903 1120
0277S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (195.7, 1.3) (265.4, 1.3)
Al Fin Coils 1728 1676 1764 1519 955
Cu Fin Coils 1728 1797 2103 1898 1116
RS&LS1/Al Fin Coils 1907 1854 1764 1519 955
RS&LS1/Cu Fin Coils 1907 1975 2103 1898 1116
LEFT - L (9.1, 86.8) (59.4, 86.8) (97.2, 86.8) (161.4, 86.8) (210.6, 86.8) (307.9, 86.8)
Al Fin Coils 1728 1638 1248 1160 1261 959
Cu Fin Coils 1728 1728 1488 1435 1609 1199
RS&LS1/Al Fin Coils 1907 1817 1248 1160 1261 959
RS&LS1/Cu Fin Coils 1907 1907 1488 1435 1609 1199
0247S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (97.2, 1.3) (161.4, 1.3) (210.6, 1.3) (307.9, 1.3)
Al Fin Coils 1720 1625 1239 1153 1237 955
Cu Fin Coils 1720 1715 1479 1429 1585 1195
RS&LS1/Al Fin Coils 1898 1803 1239 1153 1237 955
RS&LS1/Cu Fin Coils 1898 1894 1479 1429 1590 1195
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

134 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, ENGLISH (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (97.2, 86.8) (161.4, 86.8) (210.6, 86.8) (307.9, 86.8)
Al Fin Coils 1728 1638 1248 1160 1265 1005
Cu Fin Coils 1728 1728 1488 1435 1614 1246
RS&LS1/Al Fin Coils 1907 1817 1248 1160 1265 1005
RS&LS1/Cu Fin Coils 1907 1907 1488 1435 1614 1246
0267S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (97.2, 1.3) (161.4, 1.3) (210.6, 1.3) (307.9, 1.3)
Al Fin Coils 1728 1638 1248 1160 1265 1005
Cu Fin Coils 1728 1728 1488 1435 1614 1246
RS&LS1/Al Fin Coils 1907 1817 1248 1160 1265 1005
RS&LS1/Cu Fin Coils 1907 1907 1488 1435 1618 1246
LEFT - L (9.1, 86.8) (58.1, 86.8) (111.1, 86.8) (204.7, 86.8) (284.9, 86.8) (368, 86.8)
Al Fin Coils 1753 1585 1821 1810 2123 1175 6
Cu Fin Coils 1775 1757 2165 2156 2467 1347
RS&LS1/Al Fin Coils 1929 1761 1821 1810 2189 1462
RS&LS1/Cu Fin Coils 1885 1933 2165 2156 2533 1634
0287S/P/H
RIGHT - R (9.1, 1.3) (58.1, 1.3) (111.1, 1.3) (204.7, 1.3) (284.9, 1.3) (368, 1.3)
Al Fin Coils 1753 1596 2407 2414 2635 1179
Cu Fin Coils 1775 1768 2751 2760 2978 1351
RS&LS1/Al Fin Coils 1929 1773 2407 2414 2701 1466
RS&LS1/Cu Fin Coils 1951 1944 2751 2760 3045 1638
LEFT - L (9.1, 86.8) (58.1, 86.8) (111.1, 86.8) (204.7, 86.8) (284.9, 86.8) (368, 86.8)
Al Fin Coils 1753 1585 1953 1978 2304 1184
Cu Fin Coils 1775 1757 2297 2324 2648 1356
RS&LS1/Al Fin Coils 1929 1761 1953 1978 2370 1470
RS&LS1/Cu Fin Coils 1951 1933 2297 2324 2714 1642
0307S/P/H
RIGHT - R (9.1, 1.3) (58.1, 1.3) (111.1, 1.3) (204.7, 1.3) (284.9, 1.3) (368, 1.3)
Al Fin Coils 1753 1596 2540 2632 2897 1188
Cu Fin Coils 1775 1768 2884 2978 3241 1338
RS&LS1/Al Fin Coils 1929 1773 2540 2632 2963 1475
RS&LS1/Cu Fin Coils 1951 1944 2884 2978 3307 1647
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 135

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, ENGLISH (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
(411.9,
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (185.4, 86.8) (284.4, 86.8) (358.5, 86.8)
86.8)
Al Fin Coils 1753 1585 1953 1978 1953 1140 946
Cu Fin Coils 1775 1733 2238 2363 2339 1424 1065
RS&LS1/Al Fin Coils 1929 1761 1953 1978 1953 1316 1122
0357S/P/H RS&LS1/Cu Fin Coils 1951 1909 2238 2363 2339 1601 1241
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (185.4, 1.3) (284.4, 1.3) (358.5, 1.3) (411.9, 1.3)
Al Fin Coils 1753 1596 2540 2632 2540 1151 946
Cu Fin Coils 1775 1715 2824 3018 2926 1435 1065
RS&LS1/Al Fin Coils 1929 1773 2540 2632 2540 1327 1122
RS&LS1/Cu Fin Coils 1951 1892 2824 3018 2926 1612 1241
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (185.4, 86.8) (298.1, 86.8) (375.2, 86.8) (456, 86.8)
Al Fin Coils 1766 1607 1953 1978 2041 1404 1056
Cu Fin Coils 1788 1755 2238 2363 2427 1689 1175
RS&LS1/Al Fin Coils 1942 1784 1953 1978 2041 1581 1232
RS&LS1/Cu Fin Coils 1964 1931 2238 2363 2427 1865 1351
0397S/P/H
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (185.4, 1.3) (298.1, 1.3) (375.2, 1.3) (456, 1.3)
Al Fin Coils 1766 1618 2540 2632 2628 1415 1056
Cu Fin Coils 1788 1737 2824 3018 3014 1700 1175
RS&LS1/Al Fin Coils 1942 1795 2540 2632 2628 1592 1232
RS&LS1/Cu Fin Coils 1964 1914 2824 3018 3014 1876 1351
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

136 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, ENGLISH

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (211, 86.8)
Al Fin Coils 1702 1594 1667 1609
Cu Fin Coils 1702 1706 2011 1951
RS&LS1/Al Fin Coils 1881 1773 1667 1609
RS&LS1/Cu Fin Coils 1881 1885 2011 1951
0157E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (211, 1.3)
Al Fin Coils 1702 1594 1667 1609
Cu Fin Coils 1702 1706 2011 1951
RS&LS1/Al Fin Coils 1881 1773 1667 1609
RS&LS1/Cu Fin Coils 1881 1885 2011 1951
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (195.7, 86.8) (265.4, 86.8)
Al Fin Coils 1698 1559 1559 1274 774 6
Cu Fin Coils 1698 1680 1898 1653 935
RS&LS1/Al Fin Coils 1876 1737 1559 1274 774
RS&LS1/Cu Fin Coils 1876 1858 1898 1653 935
0177E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (195.7, 1.3) (265.4, 1.3)
Al Fin Coils 1698 1559 1559 1241 664
Cu Fin Coils 1698 1680 1898 1620 825
RS&LS1/Al Fin Coils 1876 1737 1559 1241 664
RS&LS1/Cu Fin Coils 1876 1858 1898 1620 825
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (195.7, 86.8) (265.4, 86.8)
Al Fin Coils 1715 1581 1676 1287 820
Cu Fin Coils 1715 1702 2015 1667 981
RS&LS1/Al Fin Coils 1894 1759 1676 1287 820
RS&LS1/Cu Fin Coils 1894 1881 2015 1667 981
0187E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (195.7, 1.3) (265.4, 1.3)
Al Fin Coils 1698 1561 1561 1287 820
Cu Fin Coils 1698 1682 1900 1667 981
RS&LS1/Al Fin Coils 1876 1739 1561 1287 820
RS&LS1/Cu Fin Coils 1876 1861 1900 1667 981
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 137

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, ENGLISH (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (195.7, 86.8) (265.4, 86.8)
Al Fin Coils 1720 1609 1618 1354 860
Cu Fin Coils 1720 1731 1958 1733 1021
RS&LS1/Al Fin Coils 1898 1788 1618 1354 860
RS&LS1/Cu Fin Coils 1898 1909 1958 1733 1021
0197E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (195.7, 1.3) (265.4, 1.3)
Al Fin Coils 1720 1609 1618 1354 860
Cu Fin Coils 1720 1731 1958 1733 1021
RS&LS1/Al Fin Coils 1898 1788 1618 1354 860
RS&LS1/Cu Fin Coils 1898 1909 1958 1733 1021
LEFT - L (9.1, 86.8) (59.4, 86.8) (97.2, 86.8) (161.4, 86.8) (210.6, 86.8) (307.9, 86.8)
Al Fin Coils 1720 1614 1082 994 1093 952
Cu Fin Coils 1720 1704 1323 1270 1442 1193
RS&LS1/Al Fin Coils 1898 1792 1082 994 1093 952
RS&LS1/Cu Fin Coils 1898 1883 1323 1270 1442 1193
0207E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (97.2, 1.3) (161.4, 1.3) (210.6, 1.3) (307.9, 1.3)
Al Fin Coils 1720 1614 1082 994 1078 955
Cu Fin Coils 1720 1704 1323 1270 1426 1195
RS&LS1/Al Fin Coils 1898 1792 1082 994 1078 955
RS&LS1/Cu Fin Coils 1898 1883 1323 1270 1431 1195
LEFT - L (9.1, 86.8) (59.4, 86.8) (97.2, 86.8) (161.4, 86.8) (210.6, 86.8) (307.9, 86.8)
Al Fin Coils 1720 1616 1085 999 1102 1003
Cu Fin Coils 1720 1706 1325 1274 1451 1243
RS&LS1/Al Fin Coils 1898 1795 1085 999 1102 1003
RS&LS1/Cu Fin Coils 1898 1885 1325 1274 1451 1243
0227E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (97.2, 1.3) (161.4, 1.3) (210.6, 1.3) (307.9, 1.3)
Al Fin Coils 1720 1616 1085 999 1102 1003
Cu Fin Coils 1720 1706 1325 1274 1451 1243
RS&LS1/Al Fin Coils 1898 1795 1085 999 1102 1003
RS&LS1/Cu Fin Coils 1898 1885 1325 1274 1455 1243
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

138 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, ENGLISH (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (97.2, 86.8) (161.4, 86.8) (210.6, 86.8) (307.9, 86.8)
Al Fin Coils 1728 1638 1248 1160 1265 1005
Cu Fin Coils 1728 1728 1488 1435 1614 1246
RS&LS1/Al Fin Coils 1907 1817 1248 1160 1265 1005
RS&LS1/Cu Fin Coils 1907 1907 1488 1435 1614 1246
0247E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (97.2, 1.3) (161.4, 1.3) (210.6, 1.3) (307.9, 1.3)
Al Fin Coils 1720 1629 1248 1160 1265 1005
Cu Fin Coils 1720 1720 1488 1435 1614 1246
RS&LS1/Al Fin Coils 1898 1808 1248 1160 1265 1005
RS&LS1/Cu Fin Coils 1898 1898 1488 1435 1618 1246
LEFT - L (9.1, 86.8) (58.1, 86.8) (111.1, 86.8) (204.7, 86.8) (284.9, 86.8) (368, 86.8)
Al Fin Coils 1753 1585 1821 1839 2163 1175 6
Cu Fin Coils 1775 1757 2165 2185 2507 1347
RS&LS1/Al Fin Coils 1929 1761 1821 1839 2229 1396
RS&LS1/Cu Fin Coils 1951 1933 2165 2185 2573 1634
0267E/V
RIGHT - R (9.1, 1.3) (58.1, 1.3) (111.1, 1.3) (204.7, 1.3) (284.9, 1.3) (368, 1.3)
Al Fin Coils 1753 1596 2407 2493 2756 1179
Cu Fin Coils 1775 1768 2751 2840 3100 1351
RS&LS1/Al Fin Coils 1929 1773 2407 2493 2822 1466
RS&LS1/Cu Fin Coils 1951 1944 2751 2840 3166 1638
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (185.4, 86.8) (284.4, 86.8) (358.5, 86.8) (411.9, 86.8)
Al Fin Coils 1753 1585 1847 1870 1574 1049 928
Cu Fin Coils 1775 1733 2132 2255 1960 1334 1047
RS&LS1/Al Fin Coils 1929 1761 1847 1870 1574 1226 1105
RS&LS1/Cu Fin Coils 1885 1909 2132 2255 1960 1510 1224
0287E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (185.4, 1.3) (284.4, 1.3) (358.5, 1.3) (411.9, 1.3)
Al Fin Coils 1753 1596 2434 2524 2344 1120 928
Cu Fin Coils 1775 1715 2718 2910 2729 1404 1047
RS&LS1/Al Fin Coils 1929 1773 2434 2524 2344 1296 1105
RS&LS1/Cu Fin Coils 1951 1892 2718 2910 2729 1581 1224
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 139

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, ENGLISH (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - IN. AND POINT LOADS - LB

YCIV
1 2 3 4 5 6 7
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (185.4, 86.8) (284.4, 86.8) (358.5, 86.8) (411.9, 86.8)
Al Fin Coils 1753 1585 1953 1978 1953 1140 928
Cu Fin Coils 1775 1733 2238 2363 2339 1424 1047
RS&LS1/Al Fin Coils 1929 1761 1953 1978 1953 1316 1105
RS&LS1/Cu Fin Coils 1951 1931 2238 2363 2339 1601 1224
0327E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (185.4, 1.3) (284.4, 1.3) (358.5, 1.3) (411.9, 1.3)
Al Fin Coils 1753 1596 2540 2632 2540 1151 928
Cu Fin Coils 1775 1715 2824 3018 2926 1435 1047
RS&LS1/Al Fin Coils 1929 1773 2540 2632 2540 1327 1105
RS&LS1/Cu Fin Coils 1951 1892 2824 3018 2926 1612 1224
LEFT - L (9.1, 86.8) (59.4, 86.8) (109.4, 86.8) (185.4, 86.8) (298.1, 86.8) (375.2, 86.8) (456, 86.8)
Al Fin Coils 1766 1607 1953 1978 2041 1404 1038
Cu Fin Coils 1788 1755 2238 2363 2427 1689 1157
RS&LS1/Al Fin Coils 1942 1784 1953 1978 2041 1581 1215
RS&LS1/Cu Fin Coils 1964 1931 2238 2363 2427 1865 1334
0357E/V
RIGHT - R (9.1, 1.3) (59.4, 1.3) (109.4, 1.3) (185.4, 1.3) (298.1, 1.3) (375.2, 1.3) (456, 1.3)
Al Fin Coils 1766 1618 2540 2632 2628 1415 1038
Cu Fin Coils 1788 1737 2824 3018 3014 1700 1157
RS&LS1/Al Fin Coils 1942 1795 2540 2632 2628 1592 1215
RS&LS1/Cu Fin Coils 1964 1914 2824 3018 3014 1876 1334
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

140 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, SI
L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (5360, 2204)
Al Fin Coils 772 722 633 608
Cu Fin Coils 772 773 789 763
RS&LS1/Al Fin Coils 853 803 633 608
RS&LS1/Cu Fin Coils 853 854 789 763
0157S/P/H
RIGHT - R (230, 32) (1510, 32) (2780, 32) (5360, 32)
Al Fin Coils 772 722 633 608
Cu Fin Coils 772 773 789 763
RS&LS1/Al Fin Coils 853 803 633 608
RS&LS1/Cu Fin Coils 853 854 789 763
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (5360, 2204)
Al Fin Coils 780 732 756 730 6
Cu Fin Coils 780 783 912 885
RS&LS1/Al Fin Coils 861 813 756 730
RS&LS1/Cu Fin Coils 861 864 912 885
0177S/P/H
RIGHT - R (230, 32) (1510, 32) (2780, 32) (5360, 32)
Al Fin Coils 772 723 756 730
Cu Fin Coils 772 774 912 885
RS&LS1/Al Fin Coils 853 804 756 730
RS&LS1/Cu Fin Coils 853 855 912 885
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4970, 2204) (6740, 2204)
Al Fin Coils 778 716 707 578 351
Cu Fin Coils 778 771 861 750 424
RS&LS1/Al Fin Coils 859 797 707 578 351
RS&LS1/Cu Fin Coils 859 852 861 750 424
0187S/P/H
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4970, 32) (6740, 32)
Al Fin Coils 770 707 707 563 301
Cu Fin Coils 770 762 861 735 374
RS&LS1/Al Fin Coils 851 788 707 563 301
RS&LS1/Cu Fin Coils 851 843 861 735 374
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 141

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, SI (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4970, 2204) (6740, 2204)
Al Fin Coils 784 762 802 686 415
Cu Fin Coils 784 817 956 858 488
RS&LS1/Al Fin Coils 865 843 802 686 415
RS&LS1/Cu Fin Coils 865 898 956 858 488
0207S/P/H
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4970, 32) (6740, 32)
Al Fin Coils 784 760 800 669 363
Cu Fin Coils 784 815 956 841 436
RS&LS1/Al Fin Coils 865 841 800 669 363
RS&LS1/Cu Fin Coils 865 896 954 841 436
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4970, 2204) (6740, 2204)
Al Fin Coils 784 762 802 691 435
Cu Fin Coils 784 817 956 863 508
RS&LS1/Al Fin Coils 865 843 802 691 435
RS&LS1/Cu Fin Coils 865 898 956 863 508
0277S/P/H
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4970, 32) (6740, 32)
Al Fin Coils 784 760 800 689 433
Cu Fin Coils 784 815 954 861 506
RS&LS1/Al Fin Coils 865 841 800 689 433
RS&LS1/Cu Fin Coils 865 896 954 861 506
LEFT - L (230, 2204) (1510, 2204) (2470, 2204) (4100, 2204) (5350, 2204) (1820, 2204)
Al Fin Coils 784 743 566 526 572 435
Cu Fin Coils 784 784 675 651 730 544
RS&LS1/Al Fin Coils 865 824 566 526 572 435
RS&LS1/Cu Fin Coils 865 865 675 651 730 544
0247S/P/H
RIGHT - R (230, 32) (1510, 32) (2470, 32) (4100, 32) (5350, 32) (7820, 32)
Al Fin Coils 780 737 562 523 561 433
Cu Fin Coils 780 778 671 648 719 542
RS&LS1/Al Fin Coils 861 818 562 523 561 433
RS&LS1/Cu Fin Coils 861 859 671 648 721 542
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

142 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, SI (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
LEFT - L (230, 2204) (1510, 2204) (2470, 2204) (4100, 2204) (5350, 2204) (7820, 2204)
Al Fin Coils 784 743 566 526 574 456
Cu Fin Coils 784 784 675 651 732 565
RS&LS1/Al Fin Coils 865 824 566 526 574 456
RS&LS1/Cu Fin Coils 865 865 675 651 732 565
0267S/P/H
RIGHT - R (230, 32) (1510, 32) (2470, 32) (4100, 32) (5350, 32) (7820, 32)
Al Fin Coils 784 743 566 526 574 456
Cu Fin Coils 784 784 675 651 732 565
RS&LS1/Al Fin Coils 865 824 566 526 574 456
RS&LS1/Cu Fin Coils 865 865 675 651 734 565
LEFT - L (230, 2204) (1475, 2204) (2823, 2204) (5199, 2204) (7236, 2204) (9346, 2204)
Al Fin Coils 795 719 826 821 963 533 6
Cu Fin Coils 805 797 982 978 1119 611
RS&LS1/Al Fin Coils 875 799 826 821 993 663
RS&LS1/Cu Fin Coils 855 877 982 978 1149 741
0287S/P/H
RIGHT - R (230, 32) (1475, 32) (2823, 32) (5199, 32) (7236, 32) (9346, 32)
Al Fin Coils 795 724 1092 1095 1195 535
Cu Fin Coils 805 802 1248 1252 1351 613
RS&LS1/Al Fin Coils 875 804 1092 1095 1225 665
RS&LS1/Cu Fin Coils 885 882 1248 1252 1381 743
LEFT - L (230, 2204) (1475, 2204) (2823, 2204) (5199, 2204) (7236, 2204) (9346, 2204)
Al Fin Coils 795 719 886 897 1045 537
Cu Fin Coils 805 797 1042 1054 1201 615
RS&LS1/Al Fin Coils 875 799 886 897 1075 667
RS&LS1/Cu Fin Coils 885 877 1042 1054 1231 745
0307S/P/H
RIGHT - R (230, 32) (1475, 32) (2823, 32) (5199, 32) (7236, 32) (9346, 32)
Al Fin Coils 795 724 1152 1194 1314 539
Cu Fin Coils 805 802 1308 1351 1470 607
RS&LS1/Al Fin Coils 875 804 1152 1194 1344 669
RS&LS1/Cu Fin Coils 885 882 1308 1351 1500 747
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 143

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

STANDARD EFFICIENCY, SI (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
(10463,
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4710, 2204) (7225, 2204) (9105, 2204)
2204)
Al Fin Coils 795 719 886 897 886 517 429
Cu Fin Coils 805 786 1015 1072 1061 646 483
RS&LS1/Al Fin Coils 875 799 886 897 886 597 509
0357S/P/H RS&LS1/Cu Fin Coils 885 866 1015 1072 1061 726 563
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4710, 32) (7225, 32) (9105, 32) (10463, 32)
Al Fin Coils 795 724 1152 1194 1152 522 429
Cu Fin Coils 805 778 1281 1369 1327 651 483
RS&LS1/Al Fin Coils 875 804 1152 1194 1152 602 509
RS&LS1/Cu Fin Coils 885 858 1281 1369 1327 731 563
(11582,
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4710, 2204) (7572, 2204) (9530, 2204)
2204)
Al Fin Coils 801 729 886 897 926 637 479
Cu Fin Coils 811 796 1015 1072 1101 766 533
RS&LS1/Al Fin Coils 881 809 886 897 926 717 559
0397S/P/H RS&LS1/Cu Fin Coils 891 876 1015 1072 1101 846 613
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4710, 32) (7572, 32) (9530, 32) (11582, 32)
Al Fin Coils 801 734 1152 1194 1192 642 479
Cu Fin Coils 811 788 1281 1369 1367 771 533
RS&LS1/Al Fin Coils 881 814 1152 1194 1192 722 559
RS&LS1/Cu Fin Coils 891 868 1281 1369 1367 851 613
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

144 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, SI
L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (5360, 2204)
Al Fin Coils 772 723 756 730
Cu Fin Coils 772 774 912 885
RS&LS1/Al Fin Coils 853 804 756 730
RS&LS1/Cu Fin Coils 853 855 912 885
0157E/V
RIGHT - R (230, 32) (1510, 32) (2780, 32) (5360, 32)
Al Fin Coils 772 723 756 730
Cu Fin Coils 772 774 912 885
RS&LS1/Al Fin Coils 853 804 756 730
RS&LS1/Cu Fin Coils 853 855 912 885
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4970, 2204) (6740, 2204)
Al Fin Coils 770 707 707 578 351 6
Cu Fin Coils 770 762 861 750 424
RS&LS1/Al Fin Coils 851 788 707 578 351
RS&LS1/Cu Fin Coils 851 843 861 750 424
0177E/V
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4970, 32) (6740, 32)
Al Fin Coils 770 707 707 563 301
Cu Fin Coils 770 762 861 735 374
RS&LS1/Al Fin Coils 851 788 707 563 301
RS&LS1/Cu Fin Coils 851 843 861 735 374
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4970, 2204) (6740, 2204)
Al Fin Coils 778 717 760 584 372
Cu Fin Coils 778 772 914 756 445
RS&LS1/Al Fin Coils 859 798 760 584 372
RS&LS1/Cu Fin Coils 859 853 914 756 445
0187E/V
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4970, 32) (6740, 32)
Al Fin Coils 770 708 708 584 372
Cu Fin Coils 770 763 862 756 445
RS&LS1/Al Fin Coils 851 789 708 584 372
RS&LS1/Cu Fin Coils 851 844 862 756 445
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 145

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, SI (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4970, 2204) (6740, 2204)
Al Fin Coils 780 730 734 614 390
Cu Fin Coils 780 785 888 786 463
RS&LS1/Al Fin Coils 861 811 734 614 390
RS&LS1/Cu Fin Coils 861 866 888 786 463
0197E/V
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4970, 32) (6740, 32)
Al Fin Coils 780 730 734 614 390
Cu Fin Coils 780 785 888 786 463
RS&LS1/Al Fin Coils 861 811 734 614 390
RS&LS1/Cu Fin Coils 861 866 888 786 463
LEFT - L (230, 2204) (1510, 2204) (2470, 2204) (4100, 2204) (5350, 2204) (7820, 2204)
Al Fin Coils 780 732 491 451 496 432
Cu Fin Coils 780 773 600 576 654 541
RS&LS1/Al Fin Coils 861 813 491 451 496 432
RS&LS1/Cu Fin Coils 861 854 600 576 654 541
0207E/V
RIGHT - R (230, 32) (1510, 32) (2470, 32) (4100, 32) (5350, 32) (7820, 32)
Al Fin Coils 780 732 491 451 489 433
Cu Fin Coils 780 773 600 576 647 542
RS&LS1/Al Fin Coils 861 813 491 451 489 433
RS&LS1/Cu Fin Coils 861 854 600 576 649 542
LEFT - L (230, 2204) (1510, 2204) (2470, 2204) (4100, 2204) (5350, 2204) (7820, 2204)
Al Fin Coils 780 733 492 453 500 455
Cu Fin Coils 780 774 601 578 658 564
RS&LS1/Al Fin Coils 861 814 492 453 500 455
RS&LS1/Cu Fin Coils 861 855 601 578 658 564
0227E/V
RIGHT - R (230, 32) (1510, 32) (2470, 32) (4100, 32) (5350, 32) (7820, 32)
Al Fin Coils 780 733 492 453 500 455
Cu Fin Coils 780 774 601 578 658 564
RS&LS1/Al Fin Coils 861 814 492 453 500 455
RS&LS1/Cu Fin Coils 861 855 601 578 660 564
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

146 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, SI (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

LEFT - L (230, 2204) (1475, 2204) (2823, 2204) (5199, 2204) (7236, 2204) (9346, 2204)
6
Al Fin Coils 795 719 826 834 981 533
Cu Fin Coils 805 797 982 991 1137 611
RS&LS1/Al Fin Coils 875 799 826 834 1011 633
0267E/V RS&LS1/Cu Fin Coils 885 877 982 991 1167 741
RIGHT - R (230, 32) (1475, 32) (2823, 32) (5199, 32) (7236, 32) (9346, 32)
Al Fin Coils 795 724 1092 1131 1250 535
Cu Fin Coils 805 802 1248 1288 1406 613
RS&LS1/Al Fin Coils 875 804 1092 1131 1280 665
RS&LS1/Cu Fin Coils 885 882 1248 1288 1436 743
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4710, 2204) (7225, 2204) (9105, 2204) (10463, 2204)
Al Fin Coils 795 719 838 848 714 476 421
Cu Fin Coils 805 786 967 1023 889 605 475
RS&LS1/Al Fin Coils 875 799 838 848 714 556 501
RS&LS1/Cu Fin Coils 855 866 967 1023 889 685 555
0287E/V
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4710, 32) (7225, 32) (9105, 32) (10463, 32)
Al Fin Coils 795 724 1104 1145 1063 508 421
Cu Fin Coils 805 778 1233 1320 1238 637 475
RS&LS1/Al Fin Coils 875 804 1104 1145 1063 588 501
RS&LS1/Cu Fin Coils 885 858 1233 1320 1238 717 555
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

JOHNSON CONTROLS 147

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

HIGH EFFICIENCY, SI (CONT'D)

L1 L2 L3 L4 L5 L6 L7

CONTROL PANEL
y R1 R2 R3 R4 R5 R6 R7

ISOLATOR LOCATIONS (X, Y) - MM. AND POINT LOADS - KG

YCIV
1 2 3 4 5 6 7
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4710, 2204) (7225, 2204) (9105, 2204) (10463, 2204)
Al Fin Coils 795 719 886 897 886 517 421
Cu Fin Coils 805 786 1015 1072 1061 646 475
RS&LS1/Al Fin Coils 875 799 886 897 886 597 501
RS&LS1/Cu Fin Coils 885 876 1015 1072 1061 726 555
0327E/V
RIGHT - R (230, 32) (1510, 32) (2780, 32) (4710, 32) (7225, 32) (9105, 32) (10463, 32)
Al Fin Coils 795 724 1152 1194 1152 522 421
Cu Fin Coils 805 778 1281 1369 1327 651 475
RS&LS1/Al Fin Coils 875 804 1152 1194 1152 602 501
RS&LS1/Cu Fin Coils 885 858 1281 1369 1327 731 555
LEFT - L (230, 2204) (1510, 2204) (2780, 2204) (4710, 2204) (7572, 2204) (9530, 2204) (11582, 2204)
Al Fin Coils 801 729 886 897 926 637 471
Cu Fin Coils 811 796 1015 1072 1101 766 525
RS&LS1/Al Fin Coils 881 809 886 897 926 717 551
0357E/V RS&LS1/Cu Fin Coils 891 876 1015 1072 1101 846 605
163 RIGHT - R (230, 32) (1510, 32) (2780, 32) (4710, 32) (7572, 32) (9530, 32) (11582, 32)
Al Fin Coils 801 734 1152 1194 1192 642 471
Cu Fin Coils 811 788 1281 1369 1367 771 525
RS&LS1/Al Fin Coils 881 814 1152 1194 1192 722 551
RS&LS1/Cu Fin Coils 891 868 1281 1369 1367 851 605
NOTES:1. RS = Reduced Sound Option, LS = Low Sound Option

148 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ISOLATOR CROSS REFERENCE

OLD PART NUMBER MASON NEW PART NUMBER THE VMC

029-24583-002 CIP-B-450 RED 029-25334-002 CP-1D-510 BLACK
029-24583-003 CIP-B-750 WHITE 029-25334-003 CP-1D-900 DK GREEN
029-24583-004 CIP-B-1000 BLUE 029-25334-004 CP-1D-1200 GRAY
029-24583-005 CIP-B-1250 GRAY 029-25334-005 CP-1D-1360 WHITE
029-24583-006 CIP-B-1650 BLACK 029-25334-006 CP-1 D-1785N GRAY IRED
029-24583-007 CIP-C-1000 BLACK
029-25334-008 C2P-1D-1350 DARK PURPLE
029-24583-008 CIP-C-1350 YELLOW
CIP-C-1750 BLACK STRIPE WITH
029-24583-009 029-25334-009 C2P-1D-1800 DARK GREEN
RED
029-24583-010 CIP-C-2100 YELLOW WITH RED
029-25334-010 C2P-1D-2400 GRAY
029-24583-011 CIP-C-2385 YELLOW WITH GREEN
029-24583-012 CIP-C-2650 RED WITH RED 029-25334-012 C2P-1D-2720 WHITE
029-24583-013 CIP-C-2935 RED WITH GREEN 029-25334-013 C2P-1D-3570N GRAY/iRED
029-24584-001 ND-C YELLOW 029-25335-001 RD-3 CHARCOAL-WR
029-24584-002 ND-D YELLOW 029-25335-002 RD-4 BRICK RED-WR
029-24584-004 ND-DS YELLOW 029-25335-004 RD-4 CHARCOAL-WR
029-24585-006 SLRS-2-C2-420 RED
029-25336-006 Y2RSI-2D-460 GREEN
029-24585-007 SLRS-2-C2-520 WHITE
029-24585-008 SLRS-2-C2-660 BLACK 029-25336-008 Y2RSI-2D-710 DK BROWN
029-24585-009 SLRS-2-C2-920 BLUE 029-25336-009 Y2RSI-2D-870 RED
029-24585-010 SLRS-2-C2-1220 GREEN 029-25336-010 Y2RSI-2D-1200N RED/BLACK
029-24585-011 SLRS-2-C2-1760 GRAY 029-25336-011 Y2RSI-2D-1690 PINK
6
029-24585-012 SLRS-2-C2-2420 SILVER 029-25336-012 Y2RSI-2D-2640N PINK/GRAY
Y2RSI-2D-2870N PINK/GRAY/OR-
029-24585-013 SLRS-2-C2-3080 GRAY WITH RED 029-25336-013
ANGE
SLRS-2-C2-3740 SILVER WITH
029-24585-014 029-25336-014 Y2RSI-2D-3600 PINK/GRAY/BROWN
RED

JOHNSON CONTROLS 149

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ONE INCH DEFLECTION SPRING ISOLATORS CROSS-REFERENCE

Units shipped on or after June 15, 2008

RATED
JCI PART
EFLECTION COLOR CODE
NUMBER
(IN) 5/8"
1.36 LT. PURPLE
1.2 DK. YELLOW
1.17 DK. BLUE
1.4 YELLOW Ø1/2"
1.13 RED
1.02 BLACK 029 25334 002
1.32 DK. PURPLE H"
1.02 DK. GREEN 029 25334 003
0.9 GRAY 029 25334 004
0.77 WHITE 029 25334 005
0.88 GRAY/RED 029 25334 006

RATED
JCI PART
DEFLECTION COLOR CODE
NUMBER
(IN) C"
1.02 BLACK T"
B" L"
029 25334 008
1.32 DK. PURPLE
029 25334 007 D"
1.02 DK. GREEN 029 25334 009
W"
029 25334 010
0.9 GRAY LD13759
029 25334 011
0.77 WHITE 029 25334 012
0.88 GRAY / RED 029 25334 013

MOUNT DIMENSION DATA (INCHES)

TYPE
CHES, INTERPRET PER ANSI Y14.
W D L B C T H
G-POWDER COATED, SPRING-POWDER COATED (COLOR: SEE TABLE),
PLATE.
CP 3 5/8
OLTING OR ANCHORING MOUNT TO SUPPORT STRUCTURE WITH A MIN (2) 7 3/4 6 1/2 4 3/4 1/2 5 5/8
A CONCRETE ANCHORS.
C2P
D FOR 50% OVER-TRAVEL. 3 5/8 10 1/2 9 1/4 7 3/4 9/16 6
STALLATION INSTRUCTIONS.

DIMENSIONAL DATA (INCHES)

RATED CAPACITY (For units with all load points less
D L B than C T kg)
1785 lb (810 H VENDOR P/N COLOR YORK P/N
5/8 7-3/4 6-1/2 4-3/4 1/2 5-5/8
*lb *kg
5/8 10-1/2 9-1/4 7-3/4 9/16 6
Up to 434 Up to 197 CP-1D-510 BLACK 029-25334-002
435–765 198–347 CP-1D-900 DK GREEN 029-25334-003
766–1020 348–463 CP-1D-1200 GRAY 029-25334-004
1021–1156 464–524 CP-1D-1360 WHITE 029-25334-005
1157–1785 525–810 CP-1D-1785N GRAY/RED 029-25334-006
Up to 1148 Up to 521 C2P-1D-1350 DK PURPLE 029-25334-008
1149–1530 522–694 C2P-1D-1800 DK GREEN 029-25334-009
1531–2040 695–925 C2P-1D-2400 GRAY 029-25334-010
2041–2312 926–1049 C2P-1D-2720 WHITE 029-25334-012
2313–3570 1050–1619 C2P-1D-3570N GRAY/RED 029-25334-013

* Value is de-rated by 15%

NOTE: Isolators with 1 in. deflection (Pin 54 = 1) must be of the same class for the entire unit. IE. Must use C2P’s at all locations on a se-
lected unit, or all CP’s
NOTES:
1. All dimensions are in inches per ANSI Y14.
2. Standard finish: H ousing - Powder coated.
Spring - Powder coated. (Color: see Table)
Hardware - Zinc electroplate
3. Installation requires bolting or anchoring mount to support structure with a min. (2) 5/8 in. dia. bolt or (2) 1/2 in. dia. concrete anchors.
4. All springs are designed for 50% over-travel.
5. See next page for Installation Instructions.

150 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ONE INCH DEFLECTION SPRING ISOLATORS INSTALLATION INSTRUCTIONS

UNITS SHIPPED ON OR AFTER JUNE 15, 2008
1. Read instructions in their entirety before begin- 5. Place equipment on top of isolators making sure
ning installation. that mounting holes of the equipment line up with
isolator positioning pin (“H”).
2. Isolators are shipped fully assembled and are to be
positioned in accordance with the submittal draw- 6. The adjustment process can only begin after the
ings or as otherwise recommended. equipment or machine is at its full operating
weight.
3. Set isolators on floor, housekeeping pad or sub-
base, ensuring that all isolator centerlines match 7. Adjust each isolator in sequence by turning spring
the equipment mounting holes. The VMC group adjusting bolt (“D”) one full counterclockwise
recommends that the isolator base (“B”) be in- turn at a time. Repeat this procedure on all isola-
stalled on a level surface. Shim or grout as re- tors, one at a time.
quired, leveling all isolator bases to the same
8. Continue adjusting each isolator until a minimum
elevation (1/4-inch maximum difference can be
of 1/4 in. clearance is achieved between the lower
tolerated).
housing and upper housing. (See drawing below).
4. Bolt or anchor all isolators to supporting structure
9. Fine adjust isolators to level equipment.
utilizing base slotted holes (“C”).
10. Installation is complete.

JOHNSON CONTROLS 151

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DURULENE ISOLATOR CROSS-REFERENCE

Units shipped on or after June 15, 2008

ATED RATED DW
JCI PART
PACITY DEFLECTION DURO (± 5)
NUMBER
LBS] [IN]
35 0.4 30
45 0.4 40
70 0.4 50
120 0.4 60
RATED RATED
CD
JCI PART
PACITY DEFLECTION DURO (± 5)
NUMBER
LBS] [IN]
135 0.5 30 MOLDED
170 0.5 40 DURULENE
240 0.5 50
380 0.5 60 HF n AD THRU
550 0.5 70

ATED RATED
TYP 2 PLACES
JCI PART
PACITY DEFLECTION DURO (± 5)
NUMBER
LBS] [IN]
250 0.5 40
525 0.5 50
750 0.5 60 BT
100 0.5 70 029 25335 001
ATED RATED AL
PACITY DEFLECTION DURO (± 5)
JCI PART W
LBS] [IN]
NUMBER L
500 0.5 40
250 0.5 50 029 25335 002 LD13760
000 0.5 60
000 0.5 70 029 25335 004
000 0.5 80
MOUNT DIMENSION DATA (INCHES)
RE IN INCHES, INTERPRET PER ANSI Y14.
FOR INSTALLATION TYPE
INSTRUCTIONS. L W HF AL AD BT CD DW
WEATHER RESISTANT DURULENE COMPOUND AS STANDARD. ALSO AVAILABLE IN OTHER MATERIALS
RUBBER, EXTREME RD1-WR
HIGH TEMPERATURE 3.13 1.75 SILICONE,1.25
SILICONE, HIGH-DAMPED 2.38
NITRILE, AND EPDM. 0.34 0.19 5/16-18 UNC X 3/4 1.25
LE CENTER TO CENTER SPACING.
OF MOUNT, PRIOR RD2-WR 3.88HEIGHT CALCULATED
TO LOADING. OPERATING 2.38 BY THE FREE
1.75HEIGHT LESS 3.00
THE 0.34 0.22 3/8-16 UNC X 1 1.75
N UNDER LOAD. ALL DIMENSIONS FOR REFERENCE ONLY
LECTROPLATED RD3-WR 5.50 3.38 2.88 4.13 0.56 0.25 1/2-13 UNC X 1 2.50
DIMENSIONAL DATA [INCHES]
W HF
RD4-WR
AL AD
6.25 BT
4.63 CD
2.75 DW
5.00 0.56 0.38 1/2-13 UNC X 1 3.00
1.75 1.25 2.38 0.34 0.19 5/16-18 UNC X 3/4 1.25
2.38 1.75 3.00 0.34 0.22 3/8-16 UNC X 1 1.75
3.38 *
2.88 WEIGHT
4.13 RANGE
0.56 (LB)
0.25 * WEIGHT
1/2-13 UNC X 1 RANGE (KG)
2.50 VENDOR P/N COLOR YORK P/N
4.63 2.75 5.00 0.56 0.38 1/2-13 UNC X 1 3.00
Up to 825 Up to 374 RD-3 CHARCOAL-WR CHARCOAL 029-25335-001
826–1688 375–766 RD-4 BRICK RED-WR BRICK RED 029-25335-002
1689–4000 767–1814 RD-4 CHARCOAL-WR CHARCOAL 029-25335-004

* Value is de-rated by 25%

NOTES:
1. All dimensions are in inches per ANSI Y14.
2. See next page for Installation Instructions.
3. Mount molded in weather resistant durulene compound as standard; also available in other materials such as natural rubber, extreme high
temperature silicone, high-damped silicone, nitrile and EDPM.
4. AL = Mounting hole center to center spacing.
5. HF = Free height of mount, prior to loading. Operating height calculated by the free height less the static deflection under load.
All dimensions for reference only.
6. Hardware - Zinc electroplate.

152 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

INSTALLATION OF DURULENE VIBRATION ISOLATORS

UNITS SHIPPED ON OR AFTER JUNE 15, 2008

1. Read instructions in their entirety before begin- 4. Bolt or anchor all isolators to supporting structure
ning installation. utilizing base thru holes (“B”).
2. Isolators are shipped fully assembled and are to be 5. Remove top bolt and top washer. Place equip-
positioned in accordance with the submittal draw- ment on top of isolators so that mounting holes
ings or as otherwise recommended. in equipment or base line up with threaded hole
(“C”).
3. Set isolators on floor, housekeeping pad, or sub-
base, ensuring that all isolator centerlines match 6. Reinstall top bolt and washer and tighten down.
the equipment mounting holes. The VMC group
7. Installation is complete.
recommends that the isolator base (“A”) be in-
stalled on a level surface. Shim or grout as re-
quired, leveling all isolator bases to the same
elevation (1/32-inch maximum difference can be
tolerated).
TOP BOLT
("B")
TOP WASHER

D D
6
("C")
("B")

CL CL ("A")
SECTION D-D
LD13762B

JOHNSON CONTROLS 153

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

SEISMIC ISOLATOR CROSS-REFERENCE

Units shipped on or after June 15, 2008

Y2RS

5" 1-1/8"

5/8" 2-3/4"
2-3/4"
12"

3/8" GAP
5/8-11UNC
Ø3/4" TYP. (4)
TYP.(4)

3/4"
7/8"

1/2" LIMIT
STOP &
NUT 8-3/8"
OPER.
HEIGHT
12-1/4"
14"

3-1/2"
3/8"
LD13761A
5"

NOTES:
1. ALL DIMENSIONS ARE IN INCHES, INTERPRET PER ANSI Y14.
2. STANDARD FINISH: HOUSING-POWDER COATED (COLOR:BLACK), SPRING-POWDER COATED (COLOR: SEE T
* WEIGHT RANGE (LB) HARDWARE
* WEIGHT RANGE (KG)
ZINC-ELECTROPLATE. VENDOR P/N COLOR YORK P/N
Up to 391 3. EQUIPMENT MUST BE BOLTED
Up to 177 OR WELDED TO THE TOP
Y2RSI-2D-460 PLATE TO MEET ALLOWABLE
GREEN SEISMIC RATINGS.
029-25336-006
4. ALL SPRINGS ARE DESIGNED FOR 50% OVERLOAD CAPACITY WITH EXCEPTION OF THE 2D-3280N & 2D-2870
392–604 178–274
5. REFER TO PAGE FOR INSTALLATION Y2RSI-2D-710
INSTRUCTIONS. DK BROWN 029-25336-008
6. CONSULT FACTORY FOR CONCRETE INSTALLATION.
605–740 275–336 Y2RSI-2D-870 RED 029-25336-009
741–1020 337–463 Y2RSI-2D-1200N RED/BLACK 029-25336-010
1021–1437 464–652 Y2RSI-2D-1690 PINK 029-25336-011
1438–2244 653–1018 Y2RSI-2D-2640N PINK/GRAY 029-25336-012
2245–2618 1019–1188 Y2RSI-2D-2870N PINK/GRAY/ORANGE 029-25336-013
2619–3740 1189–1696 Y2RSI-2D-3280N PINK/GRAY/DK BROWN 029-25336-014

* Value is de-rated by 15%

NOTES:
1. All dimensions are in inches, interpret per ANSI Y14.
2. Standard finish: housing-powder coated (color, black), spring-powder coated (color, see table above) hardware - zinc-electroplate.
3. Equipment must be bolted or welded to the top plate to meet allowable seismic ratings.
4. All springs are designed for 50% overload capacity with exception of the 2D-3280N and 2D-2870.
5. See next page for installation instructions.
6. Consult factory for concrete installation.

154 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT

UNITS SHIPPED ON OR AFTER JUNE 15, 2008

1. Read instructions in their entirety before begin- of (2) 5/8 UNC A325 grade 5 SAE bolts or weld
ning installation. equipment or bracket to the top plate (“A”) of iso-
lator with a minimum of 3/8 fillet welds 2 in. long
2. Isolators are shipped fully assembled and are to be
@ 3 in. on center for a minimum total weld of 10
positioned in accordance with the submittal draw-
in. (All sides of equipment or bracket resting on
ings or as otherwise recommended.
top plate (“A”) must be welded).
3. Set isolators on floor, housekeeping pad, or sub-
7. The adjustment process can only begin after the
base, ensuring that all isolator centerlines match
equipment or machine is at its full operating
the equipment mounting holes. The VMC group
weight.
recommends that the isolator base plates (“B”) be
installed on a level surface. Shim or grout as re- 8. Back off each of the (4) limit stop lock nuts (“F”)
quired, leveling all isolator base plates to the same on isolators 1/2 in.
elevation (1/4-inch maximum difference can be
9. Adjust each isolator in sequence by turning spring
tolerated).
adjusting nuts (“G”) one full clockwise turn at a
4. Bolt or anchor all isolators to supporting structure time. Repeat this procedure on all isolators, one
utilizing base plate thru holes (“C”) or weld base at a time. Check the limit stop lock nuts (“F”)
plate to supporting structure with 3/8 fillet weld periodically to ensure that clearance between the
2 in. long @ 4 in. on center around entire base washer and rubber grommet is maintained. Stop
plate or as engineered for specific load and or field adjustment of isolator only when the top plate
conditions. (“A”) has risen just above the shim (“E”).
6
5. Isolators are shipped to the job site with (2) re- 10. Remove all spacer shims (“E”).
movable spacer shims (“E”) between the top plate
11. Fine adjust isolators to level equipment.
and the housing. These shims must be in place
when the equipment is positioned over the isola- 12. Adjust all limit stop lock nuts (“F”) per isolator,
tors. maintaining 1/4 in. to 3/8 in. gap. The limit stop
nuts must be kept at this gap to ensure uniform
6. With all shims (“E”) in place, position equipment
bolt loading during uplift (as the case when equip-
on top of plate (“A”) of isolator. Bolt equipment
ment is drained).
securely to top plate of isolator using a minimum
13. Installation is complete.

("A") ("E") CL ("G") ("E") ("A") CL

GROMMET

1/4 - 3/8 GAP EQUIPMENT

("F")
WASHER ("E")
("F")

("C")
("C")
("B")

LD13763B

JOHNSON CONTROLS 155

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ISOLATOR INFORMATION FOR UNITS SHIPPED BEFORE JUNE 15, 2008

SLRS SEISMIC ISOLATOR SPECIFICATIONS

UNITS SHIPPED BEFORE JUNE 15, 2008

“D” Tap
"D" Tap - 4 -Holes
4 Holesunless
unless
otherwise requested.
otherwise requested
E
E
Vertical Limit E
E E
E
Stops-Out of
Vertical Limit Stops-Out
contact during E
E
Of Contact During Normal
normal
Operationoperation
H
MBD -Max
MDB
Bolt - Max Bolt
Diameter
Diameter
Rubber
Rubber Snubbing
Snubbing T
T
Collar
Collar

HCL
HCL Adjustment Bolt
Adjustment
HCW
HCW LL Bolt
W
W
Non-skid
Non-Skid NeoprenePad-
Neoprene
Internal Neoprene
Internal Pad - Pad can be if
Lower
Lower Enclosed Steel Acoustical PadPad can be removed
Enclosed
Restraining
Restraining Housing Neoprene mounts removed
are welded are
if mounts
Steel Acoustical into welded
Nut
Nut Housing into position.
position.
Pad LD10509

PIN 54 = S

*WEIGHT RANGE (LB) *WEIGHT RANGE (KG) VENDOR P/N COLOR YORK P/N

Up to 358 Up to 162 SLRS-2-C2-420 Red 029-24585-006

358–442 162–201 SLRS-2-C2-520 White 029-24585-007
443–581 201–264 SLRS-2-C2-660 Black 029-24585-008
582–782 264–335 SLRS-2-C2-920 Blue 029-24585-009
783–1037 335–471 SLRS-2-C2-1220 Green 029-24585-010
1038–1496 471–679 SLRS-2-C2-1760 Gray 029-24585-011
1497–2057 679–933 SLRS-2-C2-2420 Silver 029-24585-012
2058–2618 933–1188 SLRS-2-C2-3080 Gray w/ Red 029-24585-013
2619–3179 1188–1442 SLRS-2-C2-3740 Silver w/ Red 029-24585-014

* Value is de-rated by 15%

Notes: Illustration above shows a SLRS-4-C2 (4 Springs). SLRS-8-2 and C2 have one spring, and SLRS-2-C2 has two springs.
SLRS-6-C2 has six springs and SLRS-9-C2 has nine springs.

156 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

SLRS SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT

UNITS SHIPPED BEFORE JUNE 15, 2008

To Install and Adjust Mounts

1. Supports for mountings must be leveled to instal- a 1/8 in. gap between the bolt head and the steel
lation's acceptable tolerances. washer.
2. Mountings not subjected to seismic or wind forces 8. Turn adjustment bolt 8 turns on each mount.
do not require bolting to supports. 9. Take one additional complete turn on each adjust-
3. Mountings subjected to seismic or wind forces ment bolt in sequence until the top plate lifts off
must be bolted or welded in position. of the lower restraining nuts. Take no additional
turns on that mount. Continue with equal turns on
4. If mountings are welded in position, remove low- the other mounts until the top plates lift off of the
er friction pad before welding. lower restraining nuts of all mounts.
5. Set mountings with top channels held in place by 10. Hold the limit stop bolt in place and turn the low-
the lower restraining nuts and limit stops. er restraining nut clockwise and tighten it against
6. Place equipment on mountings and secure by the stanchion. Repeat the same procedure on all
bolting or welding. mounts.

7. Hold lower restraining nut in place and turn verti- 11. Top plate should remain at a fixed elevation, plus
cal limit stop bolt counter-clockwise until there is or minus 1/8 in.

6
"D" Tap - 4 Holes unless
otherwise requested
Vertical Limit
Stops-Out of
contact during LIMIT STOP
normal operation BOLT

MBD -Max 1/8"

Bolt
Diameter LOWER
Rubber RESTRAINING
Snubbing BOLTS
Collar
1/4"

Adjustment
Bolt

Non-Skid Neoprene Pad-

Lower Internal
Enclosed Neoprene Pad can be removed if
Restraining Steel mounts are welded SHIPPED & INSTALLED AFTER ADJUSTMENT
Nut Acoustical into position.
Housing Pad

LD10568

JOHNSON CONTROLS 157

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

ND-X NEOPRENE ISOLATOR SPECIFICATIONS

UNITS SHIPPED BEFORE JUNE 15, 2008

“CS”
"CS"CAP
CapSCREW
Screw

D
D
“MBD” MAXIUM
Steel Plate - Top & "MBD"
Steel Plate - Top & BOLT DIAMETER
Max. Bolt Dia.
Bottom. Neoprene
Bottom Neoprene
covered to prevent
covered tocorosion.
prevent
corrosion

BC
BC
H
H LL

W
W
TT LD10569

ENGLISH
SIZE D H L T W BC CS MBD
ND-C 2 9/16 2 3/4 5 1/2 1/4 2 5/16 4 1/8 1/2-13x1" 1/2"
ND-D 3 3/8 2 3/4 6 1/4 5/16 4 5 1/2-13x1" 1/2"
ND-DS 3 3/8 2 3/4 6 1/4 5/16 4 5 1/2-13x1" 1/2"
SI
ND-C 65.1 69.9 139.7 6.4 58.7 101.9 1/2-13x1" 13
ND-D 85.7 69.9 158.8 7.9 101.6 127.0 1/2-13x1" 13
ND-DS 85.7 69.9 158.8 7.9 101.6 127.0 1/2-13x1" 13

PIN 54 = N

**WEIGHT RANGE (LB) **WEIGHT RANGE (KG) COLOR YORK P/N YORK P/N

Up to 751 Up to 341 ND-C Yellow 029-24584-001

751–1651 341–749 ND-D Yellow 029-24584-002
1651–3226 749–1463 ND-E Yellow 029-24584-003

** Value is de-rated by 15%

Installation of Neoprene Mounts

It is not necessary to bolt the mountings to a concrete installed on steel framing above the ground, the mount-
pad in most cases. Mountings should always be bolted ings should be bolted to the steel framework. Lower
to the chiller rails. When mountings and the chiller are the chiller on to the mountings evenly to avoid placing
excessive weight on individual isolators.

158 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

CIP 1" DEFLECTION RESTRAINED MOUNTING SPECIFICATIONS

UNITS SHIPPED BEFORE JUNE 15, 2008

LD10576

PIN 54 = 1 (SEE NOTE BELOW)

FOR UNITS WITH ALL LOAD POINTS LESS THAN 1404 LB (637 KG)

*WEIGHT RANGE (LB) *WEIGHT RANGE (KG) VENDOR P/N COLOR YORK P/N
6

239–384 108–174 CIP-B-450 Red 029-24583-002

384–639 174–290 CIP-B-750 White 029-24583-003

639–851 290–386 CIP-B-1000 Blue 029-24583-004

851–1064 386–483 CIP-B-1250 Gray 029-24583-005

1064–1404 483–637 CIP-B-1650 Black 029-24583-006

FOR UNITS WITH ANY LOAD POINT ABOVE 1404 LB (637 KG)

Up to 851 Up to 386 CIP-C-1000 Black 029-24583-007

851–1149 386–521 CIP-C-1350 Yellow 029-24583-008

1149–1489 521–675 CIP-C-1750 Black w/ Red 029-24583-009

1489–1786 675–810 CIP-C-2100 Yellow w/ Red 029-24583-010

1786–2028 810–920 CIP-C-2385 Yellow w/ Green 029-24583-011

2028–2254 920–1022 CIP-C-2650 Red w/ Red 029-24583-012

2354–2936 1022–1332 CIP-C-2935 Red w/ Green 029-24583-013

* Value is de-rated by 15%

JOHNSON CONTROLS 159

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

INSTALLATION OF 1" DEFLECTION MOUNTS

UNITSshows
Illustration SHIPPED BEFORE
single springJUNE
CIP-B15,
or2008
CIP-C mount.

EQUIPMENT BASE Mounting may be

A operated 1/2" above
Free & Operating
Dowel Pin is 3/8" dia. for Height.
CIP-A & 1/2" thereafter
NOTE-
FERROUS HOUSING
CIP Mounts are not
to be used in seismic
SIDE ACCESS INTERNAL or wind load
ADJUSTMENT BOLT applications.
Turn clockwise to load
spring and maintain Free
& Operating Height.
FREE &
OPERATING
HEIGHT

NON-SKID NEOPRENE
ACOUSTICAL ISOLATION PAD L
(Bolting to floor is not necessary for
indoor applications)
T
W

SBC
HCL
MAX BOLT
DIA. - MBD

Slot Width - SW
All springs have additional
HCW
travel to solid equal to 50%
of the rated deflection.

BASE PLATE DIMENSIONS

TYPE CIP DIMENSIONS (inches)†

Free Min
Size A L T W SW HCL HCW MBD SBC Ht. Ht.
CIP-B 5 3/ 4 8 /4 /2 2 /4 7/16 6
1 1 3 1/ 2 1
1 2
/ 3 / 1
8 7 4 61/ 8 5 1/ 4
/
CIP-C 6 5/ 8 8 7/8 9/16 3 1/2 7/16 7 1/4 13/4 3/8 7 7/8 63/4 6 3/4

†Casting dimensions may vary ±1/8" LD10577

1. Floor or steel frame should be level and smooth. 5. Complete piping and fill equipment with water,
refrigerant, etc.
2. For pad installations, isolators do not normally
require bolting. If necessary, anchor isolators to 6. Turn leveling bolt of first isolator four full revolu-
floor through bolt holes in the base plate. tions and proceed to each mount in turn.
Isolators must be bolted to the substruc- 7. Continue turning leveling bolts until the equip-
ture and the equipment must be bolted to ment is fully supported by all mountings and the
the isolators when outdoor equipment is equipment is raised free of the spacer blocks or
exposed to wind forces. shims. Remove the blocks or shims.
8. Turn the leveling bolt of all mountings in either
direction in order to level the installation.
3. Lubricate the threads of adjusting bolt. Loosen the
hold down bolts to allow for isolator adjustment. 9. Tighten the resilient washer and underside of
channel cap plate.
4. Block the equipment 10 mm (1/4 in.) higher than
the specified free height of the isolator. To use the 10. Installation is now complete.
isolator as blocking for the equipment, insert a 10
mm (1/4 in.) shim between the upper load plate
and vertical uprights. Lower the equipment on the
blocking or shimmed isolators.

160 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

REFRIGERANT FLOW DIAGRAM

OIL COOLER COIL

CONDENSOR COIL

SMV

FLASH
TANK
OIL 6
COMPRESSOR SEPARATOR

EVAPORATOR

RC2

Low Pressure Liquid Low Pressure Vapor High Pressure Vapor

Medium Pressure Vapor High Pressure Liquid Oil

SMV Stopper Motor Valve Angle Stop Valve M3S - Air Entering Compressor
R-22 - Refrigerant Circuit Number
R-134a
S Sight Glass
Solenoid Valve Economizer (Added to some models)

Filter or Dryer
Relief Valve

Ball Valve LD10505

Figure 22 - REFRIGERANT FLOW DIAGRAM

JOHNSON CONTROLS 161

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

PROCESS AND INSTRUMENTATION DIAGRAM

Z Z

OIL COOLER COIL

CONDENSOR COIL

T
Z DV
S
AIR HTC
FLOW
LTC OS
SMV
PS
T P
FT DV
DV DIF
SMV
LPC P
COMP P DV
M HPC
HPL
HTR DPF

EVAPORATOR HTR

DV T T
CHT
LTC FS
DV
CHILLER WATER
FLOW

SYSTEM COMPONENTS MAJOR COMPONENTS MICROPROCESSOR CONTROL FUNCTIONS

SMV
STEPPER MOTOR VALVE COMP COMPRESSOR CHT CHILLED LIQUID THERMOSTAT
S

SOLENOID VALVE OS OIL SEPARATOR DP DIFFERENTIAL PRESSURE CUTOUT

BALL VALVE FT FLASH TANK DPF DISCHARGE PRESSURE FAN CONTROL
RELIEF VALVE M MUFFLER DV DISPLAY VALUE
STOP VALVE ANGLE, ACCESS HPL HIGH PRESSURE LOAD LIMITING

P PRESSURE SENSOR HTC HIGH TEMPERATURE CUTOUT

T TEMPERATURE SENSOR LPC LOW PRESSURE CUTOUT

REPLACEABLE CORE FILTER/DRYER LTC LOW TEMPERATURE CUTOUT
SIGHT GLASS HPC HIGH PRESSURE CUTOUT
FS FLOW SWITCH (optional) HTR HEATER
PS PRESSURE SWITCH
DIF DIFFERENTIAL
HTR ELECTRIC HEATER

PLUG

LD10589A

Figure 23 - PROCESS AND INSTRUMENTATION DIAGRAM

162 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS

CHILLER & DISPLAY

ELECTRICAL PANEL
FANS
KEYPAD/DISPLAY
PANEL DOOR

CONDENSER
COIL

FILTER
DRIER
COMPRESSOR
MUFFLERS
LD13121

Figure 24 - COMPONENT LOCATIONS

JOHNSON CONTROLS 163

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

LD10578

Figure 25 - CONTROL AND VSD CABINET COMPONENTS

164 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

CHILLER
MICROGATEWAY CONTROL
(OPTIONAL) BOARD RELAY BOARD #1

LD10579

OPTIONAL
CIRCUIT BREAKER RELAY BOARD #2
(Standard Unit will have terminal blocks.Input
power to the chiller will be connected here (see
Figures.-31 and 32)).

Figure 26 - CHILLER CONTROL BOARD, RELAY BOARDS, MICROGATEWAY, AND OPTIONAL CIRCUIT
BREAKER

JOHNSON CONTROLS 165

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

MICROGATEWAY CHILLER
(OPTIONAL) CONTROL
BOARD RELAY BOARD #1

CLOCK JUMPER (CLK) RELAY BOARD #2

JP2
RS-232/485 JUMPER

JP4, JP5, & JP6

LD10580

mA
▼ ▼
• • •
▲ ▲
V
JUMPER POSITION

Figure 27 - CHILLER CONTROL BOARD, RELAY BOARDS, AND MICROGATEWAY, 2 COMPRESSOR

166 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

CHILLER
CONTROL
BOARD

RELAY BOARD #3 RELAY BOARD #1

RELAY BOARD #2

MICROGATEWAY JP4, JP5, & JP6

50069
(OPTIONAL)

mA
▼ ▼
• • •
▲ ▲
V
JUMPER POSITION

Figure 28 - CHILLER CONTROL BOARD, RELAY BOARDS, AND MICROGATEWAY, 3 COMPRESSOR

JOHNSON CONTROLS 167

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

VSD
LOGIC BOARD

SCR TRIGGER BOARD

LD10582

Figure 29 - VSD LOGIC BOARD

168 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

R86
(COMPR 4
Over Load Adjust)

R42
(COMPR 3 6
Over Load Adjust)

R64
(COMPR 2
Over Load Adjust)

R19
(COMPR 1
Over Load Adjust)
YORK
MADE IN THE USA

LD10590

Figure 30 - VSD LOGIC BOARD (ORIGINAL - OBSOLETE), P/N 031-02477-000

JOHNSON CONTROLS 169

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

MADE IN THE USA

R86
(COMPR 4
Over Load Adjust)

R42
(COMPR 3
Over Load Adjust)

R64
(COMPR 2
Over Load Adjust)

R19
(COMPR 1
Over Load Adjust)

LD13119

Figure 31 - VSD LOGIC BOARD (NEW), P/N 031-02507-XXX

170 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

10CR FAN PUMP

OPTIONAL CIRCUIT CONTROL AND CONTROL RELAY
BREAKER VSD CABINET
(Standard Unit will COOLING COIL
have terminal blocks) CONTROL AND
FLASH TANK FEED VSD CABINET
11T AND DRAIN VALVE COOLING FAN
TRANSFORMER CONTROLLER

LD10583
4-9FU FUSES and
INCOMING POWER 14-16FU FUSES
10T
GROUND LUGS TRANSIENT
TRANSFORMER 17-21 FU SUPPRESSOR
1TB FUSES
TERMINAL INPUT POWER TO
BLOCK THE CHILLER CONNECTS
HERE 1L AC LINE
INDUCTOR

Figure 32 - POWER COMPONENTS, 2 COMPRESSOR

JOHNSON CONTROLS 171

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

CONTROL AND
VSD CABINET
OPTIONAL CIRCUIT FLASH TANK CONTROL AND COOLING FANS
BREAKER DRAIN and FEED VSD CABINET
(Standard Unit will VALVE COOLING COIL
have terminal blocks) CONTROLLER
(VG1)
11T
TRANSFORMER

1TB
TERMINAL
BLOCK
(Hidden from
view)

50076

FUSES
FU4, 5, 6, 7, 8 ,9
14, 15, 16, 22, 23, 24 TRANSIENT
SUPPRESSOR
10T INPUT POWER TO BOARD
TRANSFORMER THE CHILLER CONNECTS 11, 12, 13 FU
HERE

Figure 33 - POWER COMPONENTS, 3 COMPRESSOR

172 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

FAN CONTACTORS
4CR-9CR

LD10584

3T TRANSFORMER
(24VAC to SCR Gate Driver Board and VSD Logic Board)

Figure 34 - FAN CONTACTORS AND 3T TRANSFORMER, 2 COMPRESSOR

JOHNSON CONTROLS 173

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

FAN
CONTACTORS
(4, 5, 6, 7, 8, 9
11, 12, 13CR)

3T
TRANSFORMER

50072

Figure 35 - FAN CONTACTORS, 3 COMPRESSOR

174 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

17-21 FU FUSES
(17 FU: 2T, 18 FU: VSD Logic / TRANSIENT
SCR Trigger Board / SUPPRESSOR BOARD
Pump Contactor, (3-Phase Input)
19 FU: 10T and 11T, 4-6 CT
4-9 FU FUSES and CURRENT
20 FU: Relay Board #1,
14-16 FU FUSES TRANSFORMERS
21 FU: Relay Board #2
(4-6 FU: TB-1-3 SCR 3-8 RES RESISTORS
Trigger Board, (Motor Output RC
7-9 FU: Sys. 1 Fans, 10 CR FAN PUMP “DV/DT” Network)
COOLING COOLING 14-16 FU: Sys. 2 Fans) CONTROL RELAY
FAN FAN

LD10585

1L AC LINE 3-8 RES RESISTORS

INDUCTOR (Motor Output RC
CAPACITORS C15-C17
"DV/DT Network)
(Motor Output RC “DV/DT”
Network)

Figure 36 - VSD COMPONENTS

JOHNSON CONTROLS 175

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

3T
(VSD LOGIC and
CABINET SCR TRIGGER BOARD
COOLING FAN 24 VAC SUPPLY
COOLING
COIL CONTACTORS TRANSFORMER)
FAN
4CR-9CR

BUS
ISOLATOR
BOARD
(FEEDS VSD
LOGIC BOARD)

CURRENT
TRANSFORMERS SCR
TRIGGER
BOARD

IGBT GATE
SNUBBER DRIVER
CAPS BOARDS
(C7-C12)

IGBT
MODULES

SCR/DIODE
MODULES

1RES AND 2RES LD10586

1L LINE BUS FILTER BUS CAPACITOR
INDUCTOR CAPACITORS BANK EQUALIZING/
(Behind Panel) HEATSINK BLEEDER
(Water Cooled) RESISTORS

Figure 37 - VSD COMPONENTS, 2 COMPRESSOR

176 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

COOLING CABINET FAN DC BUS 3T

FAN COOLING CONTACTORS VOLTAGE (VSD LOGIC AND
COIL 4CR-9CR AND ISOLATION SCR TRIGGER BOARD
11CR-13 CR) BOARD 24 VAC SUPPLY
TRANSFORMER)

CURRENT
TRANSFORMERS

SCR
TRIGGER
BOARD

IBGT GATE
SNUBBER
DRIVER
CAPS
BOARDS 6
(C7-C12)

IBGT
MODULES

SCR/DIODE
MODULES

BUS FILTER
CAPACITORS 50085

(Behind Panel) 1RES AND 2RES

BUS CAPACITOR
HEATSINK
BANK EQUALIZING/
(Water Cooled)
BLEEDER
RESISTORS

Figure 38 - VSD COMPONENTS, 3 COMPRESSOR

JOHNSON CONTROLS 177

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

CABINET CURRENT
COOLING TRANSFORMERS
COOLING COIL C13-C17
FAN
FANS
RELAYS

TRANSIENT
SUPPRESSOR
BOARD
W/ 11FU, 12FU,
AND 13 FU FUSES
(3 Phase Input)

10CR FAN
PUMP
CONTROL
RELAY

LD10587

1L LINE
INDUCTOR

Figure 39 - VSD COMPONENTS, 2 COMPRESSOR

178 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

TRANSIENT CABINET
SUPPRESSOR COOLING
BOARD COIL CURRENT
W/ 11FU, 12FU, TRANSFORMERS
AND 13 FU FUSES (C14, C13, 12, 9, 8, 7, 6, 5, 4) FAN
(3 Phase Input) COOLING RELAYS
FAN

2 2 2 2 2 2 2

1 1 1 1 1 1 1

50073

SNUBBER CAPS 1 SNUBBER RESISTORS 2

c24, 25, 26, 21 res15, 16, 17, 18, 19, 20,
LINE 22, 23, 18, 19, 20 9, 10, 11, 12, 13, 14, 3, 4,
INDUCTORS 5, 6, 7, 8

Figure 40 - VSD COMPONENTS, 3 COMPRESSOR

JOHNSON CONTROLS 179

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

LD10588

The line inductor will reach operating

temperatures of over 300°F. Do not open
panel doors during operation. Assure the
inductor is cool whenever working near
the inductor with power OFF.

Figure 41 - INVERTER POWER COMPONENTS, 2 COMPRESSOR

180 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

SCR
TRIGGER
BOARD

50077

Figure 42 - INVERTER POWER COMPONENTS, 3 COMPRESSOR

JOHNSON CONTROLS 181

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

WATER COOLED
IGBT's IGBT's IGBT's HEAT SINK

SCR/DIODE
MODULES SCR/DIODE
MODULE

LD10591
1RES and 2RES BUS CAPACITORS BANK
EQUALIZING/BLEEDER RESISTORS

LAMINATED
BUS
STRUCTURE

IGBT GATE
DRIVER
IGBT GATE BOARD #1
DRIVER
BOARD #2

LD10592

IGBT's IGBT's

Figure 43 - INVERTER POWER COMPONENTS

182 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPONENT LOCATIONS (CONT'D)

IGBT GATE
DRIVER BOARD
LAMINATED WATER COOLED
BUS FILTER HEAT SINK
BUS STRUCTURE
CAPACITORS IGBT

LD10593

IGBT's
6
IGBT's

SCR/DIODE
MODULES
SCR/DIODE
MODULES

LD10594
1RES and 2RES BUS CAPACITORS BANK
EQUALIZING/BLEEDER RESISTORS
FIGURE 43 - INVERTER POWER COMPONENTS (CONT'D)

JOHNSON CONTROLS 183

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

GLYCOL SYSTEM COMPONENTS

REAR
OF
VSD PANEL

SEE
DETAIL "B"
SEE
DETAIL "C"

DETAIL "A"

TO GLYCOL PUMP
(SEE DETAIL "A")

DETAIL "B"
TYPICAL 4 PLACES

GLYCOL PUMP
(SEE DETAIL "A")

DETAIL "C"
LD13122A

Figure 44 - GLYCOL PUMP AND FILL TUBE LOCATIONS

184 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

GLYCOL SYSTEM COMPONENTS (CONT'D)

GLYCOL
FILL
TUBE

LD10597

Figure 45 - GLYCOL PIPING AND FILL TUBE LOCATION

JOHNSON CONTROLS 185

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

COMPRESSOR COMPONENTS

BEARINGS

BEARINGS SHIMS
ROTOR • SHIMS
ROTOR
MALE

FEMALE
MOTOR/ROTOR
HOUSING

DISCHARGE
HOUSING
ROTOR

TERMINALS
STATOR

FILTER
MOTOR
KEY

OIL
STATOR
STRAINER
SUCTION

LD10596
Figure 46 - COMPRESSOR COMPONENTS

186 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

CHILLER ELECTRONIC COMPONENTS

Keypad
An operator keypad allows complete control of the sys- The +/- (PLUS/MINUS) key allows making numeric
tem from a central location. The keypad offers a multi- values negative.
tude of command keys on the left and right side of the
keypad to access displays, program setpoints, history The  (ENTER) key stores program changes into
data, and initiate system commands. Most keys have memory.
multiple displays that can be accessed by repetitively
The X (CANCEL) key is used to cancel the data en-
pressing the key or by pressing the ▲,▼,◄, and ►
try operation and returns the programmed value to the
(ARROW) keys. The keypad utilizes an overlay to
original value, before any programming changes were
convert the keypad to various languages.
made, when an error is made.
The ▲ (UP ARROW) and ▼ (DOWN ARROW)
keys allow scrolling backward (▲) and forward (▼)
through items to be programmed under keys such as the
PROGRAM or OPTIONS key.
The ▲ (UP ARROW) and ▼ (DOWN ARROW) keys
also allow scrolling forward (▼) or backwards (▲)
through data display keys that have multiple displays
under keys such as UNIT DATA, SYSTEM DATA,
HISTORY, PROGRAM, OPTIONS, etc. The arrow
keys can be used instead of repeatedly pressing the data
key to see the multiple displays under a key. Once the ▲ 6
▼ (ARROW) keys are pressed and used for scrolling,
pressing the original data key will return to the first display
message displayed under the data (UNIT DATA,
LD10605
SYSTEM DATA, etc.) keys.
The keypad also contains keys in the center section for
data entry in the various program modes. These keys The ◄ ► (LEFT and RIGHT ARROW) keys allow
are listed below: scrolling between non-numeric program choices under
the OPTION, DATE/TIME, and SCHEDULE keys.
• 0-9 Keys NUMERIC KEYPAD
The ◄ (LEFT ARROW) key allows programming the
• • PERIOD/DECIMAL default value when programming numeric values. For
• +/- PLUS/MINUS changing numeric values, the ► (RIGHT ARROW)
key has no function.
 ENTER
•
The ◄ ► (ARROW) keys also allow scrolling side-
• X CANCEL
ways between the same displays on different systems.
• ▲ UP ARROW For example, Pressing the ► (RIGHT ARROW) key
• ▼ DOWN ARROW while viewing the system #1 suction pressure moves the
display to system #2 suction pressure.
• ◄ LEFT ARROW
Pressing the ◄ (LEFT ARROW) key moves the
• ► RIGHT ARROW opposite direction. The arrow keys also allow fast
The numeric keys allow keying numeric values into scrolling through data under keys such as HISTORY
memory. by enabling the operator to move between subgroups
of data such as Unit, System, and VSD data.
The • (PERIOD/DECIMAL) key allows keying a
decimal point into numeric values.

JOHNSON CONTROLS 187

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Keypad Data Entry Mode

For numeric programmable items, the data entry mode DISPLAY
is entered by pressing any of the number keys, the deci-
mal point key, or the +/- key. When the data entry mode
is entered, the data from the key press will be entered
and the cursor will appear under the position where the
data is being entered.
For non-numeric programmable items, data entry
mode is entered by pressing the ◄ or ► (ARROW)
keys. When the data entry mode is entered, the cursor
will appear under the first position of the non-numeric
string. The programmable choice may be changed by
pressing the ◄ or ► (ARROW) keys.
To exit the data entry mode and store the programmed
value, the  (ENTER) key must be pressed. When the
 (ENTER) key is pressed, the cursor will disappear.
LD10605

The data entry mode may also be exited by pressing KEYPAD

UNIT
the X (CANCEL) key. The programmed data will be SWITCH
returned to its original value when the X (CANCEL)
key is pressed. Chiller Control Board
When the data entry mode is exited, the cursor will dis-
appear. If any other key is pressed while in the Data
Entry Mode, the following display will appear for 2
seconds indicating the user must choose between
accepting or canceling the change:
XXXXXXXXXXX PRESS  TO ACCEPT VALUE OR
X TO CANCEL DATA ENTRY

If the  (ENTER) key was pressed from the data en-

try mode and the numeric value entered was out of
range, the following message will appear for 2 seconds
followed by the original data display. LD10606

XXXXXXXXXXX OUT OF RANGE TRY AGAIN! RTC

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

The Chiller Control Board is the controller and

Display master decision maker in the control panel. The on-
The 80 character (2 lines of 40 characters per line) board microprocessor control is capable of control-
display is a Liquid Crystal Display (LCD) used for ling up to 4 compressors. System inputs from pressure
displaying unit parameters, system parameters, and transducers and temperature sensors are connected
operator messages. The display has an LED backlight directly to the Chiller Control Board. The Chiller
background for night viewing and is viewable in direct Control Board circuitry multiplexes all of the analog
sunlight. inputs, digitizes them, and scans the inputs to keep a
constant watch on chiller operating conditions. Based
on this information, the Chiller Control Board issues

188 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

commands to the Relay Output Board(s), Drain/Feed VSD communications over an internal chiller RS-485
Valve Controller, and VSD Logic Board to activate port located within the Control/Power cabinet. UART2
and de-activate contactors, solenoids, control valves, has a higher priority interrupt than UART1. The data
set compressor speeds, etc., for chilled liquid and is sent and received at a rate of 9600 baud and serves
safety control. Keypad commands are acted upon by only as the communications between the Chiller Con-
the Chiller Control Board microprocessor to change trol Board and the VSD Logic Board. Both of these
setpoints, cutouts, scheduling, operating requirements, boards are located within the control/power panel.
and to provide displays.
On power-up, the Chiller Control Board will attempt to
The Chiller Control Board contains a Real Time Clock initialize communications with the VSD Logic Board.
integrated circuit chip with an internal battery backup The Chiller Control Board will request the number of
of 8K x 8 bit RAM. The purpose of the battery backed compressors select and VSD software version. If for
RAM is to assure any programmed values (setpoints, some reason the information is not provided, the re-
clock, cutouts, history data etc.) are not lost during quest will be made over and over again until it is re-
a power failure, regardless of the time involved in a ceived. Once the data has been received, the Chiller
power outage or shutdown period. Control Board will not ask for it again. If the communi-
cations is not established, a VSD Loss Of Comms fault
The Chiller Control (Microprocessor) Board contains message will appear on the STATUS display.
an onboard power supply, which provides 5 VDC regu-
lated to sensors, transducers, display, and other circuit Two 8 channel, 8 bit Digital to Analog Converters
boards. The supply also provides +12 VDC to the Re- (D/A Converter) on the Chiller Control Board sup-
lay Output Boards and the +34 VDC to the level sen- ply the Feed and Drain Valve Controller signals to al-
sors. low the controller to position the Flash Tank Feed and
Drain Valves. The Feed Valve controls the refrigerant
The Chiller Control Board is capable of directly level in the flash tank while the Drain Valves controls
receiving analog inputs from temperature sensors and superheat. The control voltage to the Feed and Drain 6
transducers. An analog to digital converter (A/D) with Valve Controller has a range of 0 VDC to 10.28 VDC.
an onboard 4 channel multiplexer (MUX) allows up to
48 analog inputs to be read. The A/D Converter con- Relay Output Boards
verts the analog signals to digital signals, which can
be read by the onboard microprocessor. On a 2 system
chiller, approximately half of these inputs are utilized.
Three integrated circuits on the microprocessor can be
configured for digital inputs or outputs (Digital I/O).
As inputs, they can read digital (2 level, on/off) inputs
like keypad keys, unit switch, high pressure cut-out,
flow switch, etc. As outputs they are used for controls
like turning on fans, controlling compressor heaters,
controlling chiller valves, or other devices requiring
ON/OFF control. Up to 72 Digital I/O will be utilized
to control the chiller.
The Chiller Control (Microprocessor) Board contains
LD10607
a dual UART (Universal Asynchronous Receiver
Transmitter) for RS-485 and RS-232 communications. Two or three Relay Output Boards are required to
UART1 is configured for RCC and ISN communica- operate the chiller. These boards convert 0 VDC to
tions on the external chiller RS-485 port. Data is sent 12 VDC logic levels outputs from the Chiller Control
and received at 4800 baud with 1 start bit, 8 data bits, Board to 115 VAC levels used by contactors, relays,
odd parity, and 1 stop bit. The port is shared with the solenoid valves, etc., to control system and chiller op-
RS-232 interface and at start-up will be initialized to eration. The common side of all relays on the Relay
RS-485 communications. UART2 is configured for Output Board is connected to +12 VDC.

JOHNSON CONTROLS 189

FORM 201.23-NM2
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ISSUE DATE: 09/30/2019

The open collector outputs of the Chiller Control Board The AC incoming line voltage is rectified by the full
energize the DC relays on the Relay Output Board by three phase semi-converter bridge, made up of three
pulling one side of the relay coil to ground. When not SCR/Diode modules, which provides pulsating DC to
energized, both sides of the relay coils will be at +12 the DC link Filter in the VSD.
VDC potential.
SCR Trigger Board
VSD (Variable Speed Drive) The SCR Trigger Board controls the firing (gating) se-
The VSD is a liquid cooled, transistorized, PWM quence of the Bridge SCR’s.
inverter packaged within the Control/Power cabinet.
The inverter is composed of four major sections:
• AC to DC rectifier section with precharge circuit.
• DC link filter section.
• Three phase DC to AC inverter section.
• Output RC suppression network.

AC to DC Rectifier
The AC to DC Rectifier circuit utilizes a semi-convert-
er made of three SCR/diode modules in a three phase
bridge configuration. Each SCR/Diode module con- LD10609

tains 1 SCR and 1 diode. The modules are mounted on a

liquid cooled heatsink. This circuit rectifies the Command for the SCR Trigger Board to begin firing
incoming AC voltage to unfiltered DC, which is fil- the SCR’s is initiated by the VSD Logic Board.
tered by the DC Link Filter.
The SCR Trigger Board also monitors the three phase
input voltage to detect the loss of an incoming phase.

DC Link Filter
The DC Link Filter consists of a bank of electrolytic
filter capacitors. The capacitors smooth (filter) ripple
voltage resulting from the AC to DC rectification and
provides an energy reservoir for the DC to AC inverter.
LD10608 The capacitor filter bank is made up of 2 banks of par-
allel-connected capacitors wired in series. Series banks
A semi-converter (combination SCR/Diode) configu- of capacitors allow using smaller sized capacitors with
ration allows utilizing a separate pre-charge circuit to lower voltage ratings.
limit the current in the DC link filter capacitors when
the VSD is first switched on. This is accomplished by
slowly turning on the SCR’s to initially charge the DC
Bus. Once charged, the SCR’s remain fully gated on
during normal operation. This configuration also pro-
vides a fast disconnect from main power when the
drive is switched off.
When the drive is called to run (leaving chilled liquid
temperature is more than the Setpoint plus CR), the
SCR/Diode modules are turned on by the SCR trigger
Board, allowing the DC link filter capacitors to slowly
precharge for a period of 20 seconds.
LD10610
FILTER
CAPACITORS

190 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

The capacitor bank in conjunction with the 1L Line 1L Line Inductor

Inductor forms a low pass LC Filter and provides fur-
ther smoothing (filters ripple) to the rectified DC.
Equalizing/Bleeder resistors connected across the
banks equalize the voltage between the top and bottom
capacitors to avoid damaging the capacitors from over
voltage. The Equalizing/Bleeder resistors also provide
a path for discharge of the capacitors when the drive is
switched off. This safely discharges the capacitors in
approximately 5 minutes. Always be careful, a bleeder
resistor could be open and the bus may be charged.
LD10612

1L LINE INDUCTOR

The 5% impedance 1L Line Inductor has multiple

functions. 1L forms a low pass LC filter that filters the
pulsating DC from the AC to DC converter, to smooth
DC voltage. The inductance eliminates notches on the
incoming AC line. The inductance also helps protect
the SCR’s from high voltage incoming line transients,
which could damage them. 1L slows down the rate of
rise of current if an internal short circuit occurs, reduc-
ing the potential damage caused by the short. 1L also
LD10611 reduces the input current total harmonic distortion. 6

EQUALIZING/BLEEDER DC to AC Inverter
RESISTORS The DC to AC Inverter section converts the rectified
When servicing, always check the and filtered DC back to AC at the equivalent magni-
DC Bus Voltage across the top and tude and frequency to run a compressor at a specific
bottom, banks of capacitors with a speed. Although a common DC Bus links the compres-
known functioning voltmeter sor drive outputs, each compressor has its own inverter
correctly set to the proper scale before output module. Each inverter output module consists
performing service on the inverter. DO of 6 IGBT’s (3 modules) and an IGBT Gate Driver
NOT rely on the Bleeder Resistors to Board, which converts DC to a 3 - phase AC output.
discharge the capacitor banks without The IGBT’s are mounted to the liquid cooled heatsink
checking for the purpose of safety. designed to take the heat away from the devices and re-
move it in the condenser. The IGBT Gate Driver Board
NEVER short out a capacitor bank to provides gating pulses to turn the IGBT’s ON and OFF.
discharge it during servicing. If a bleeder
resistor is open and a capacitor bank will
not discharge, immediately contact John-
son Controls Product Technical Support.

LD10613

IGBT's IGBT's

JOHNSON CONTROLS 191

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Laminated Bus Structure

The Laminated Bus Structure is a group of copper
plates sandwiched together that connects the SCR/Di-
ode Modules, Bus Filter Capacitors, and IGBT’s. The
purpose of the Laminated Bus Structure is to reduce
the inductance that would be present in wiring or bus
bars often used to connect high voltage components
in VSD’s. Removing inductance in the circuit reduces
the voltage spike that occurs when the IGBT’s turn
off. These voltage spikes can potentially damage the
IGBT’s.
LAMINATED BUS
STRUCTURE RTC

LD13120

Figure 47 - NEW BOARD P/N 031-02507-000

The VSD Logic Board contains an FPGA (Field Pro-

grammable Gate Array) which handles the hardware
safeties and can shut down the VSD much faster than
the software safeties, since they are not dependent upon
running program loops in software. The VSD handles
all VSD related safeties including high motor current,
overload, DC Bus voltage faults, etc.
LD10614

VSD Logic Board

The VSD Logic Board controls VSD functions/op-
erations and communicates through a serial commu-
nications line with the Chiller Control Board. Safety
and shutdown information stored in the RTC (Battery
backed RAM) is reported back to the Chiller Control
Board via the communications link. The VSD Logic
Board converts the speed and run commands from the
Chiller Control Board into the necessary voltage and
frequency commands to operate the inverter section.
The VSD Logic Board also controls the converter sec- RTC
tion of the VSD (AC to DC conversion) by controlling
the pre-charge function.
The VSD Logic Board contains a second microproces-
sor for motor control, which generates the PWM sig-
LD10615
nals that control the IGBT’s in the inverter section of
the VSD.
Figure 48 - OBSOLETE BOARD P/N 031-02477-000

192 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Inputs to the VSD Logic Board are fed through an The VSD Logic Board will also monitor a communi-
onboard multiplexer (MUX) before being sent to the cations loss. If the VSD Logic Board loses communi-
A/D converter. These signals allow the VSD Logic cations with the Chiller Microprocessor Board for 8
Board to monitor DC Bus voltages, compressor mo- seconds at any time, the VSD will shut off all compres-
tor currents, VSD internal ambient temperature, IGBT sors and wait for valid comms from the Chiller Control
baseplate temperatures, and compressor overload set- Board.
tings.
Once communications is established, the Chiller Con-
The VSD Logic Board controls the glycol pump and trol Board will send a data packet on the data link once
the cabinet cooling fans. Details on the controls are every second at 9600 baud. This data packet will in-
provided in the VSD Operation and Controls on page clude run, stop, and speed commands as well as request
219. operating data from the VSD. Operating data returned
by the VSD will include individual motor currents,
Control Panel to VSD Communications motor %FLA’s, output frequency, compressor motor
Communication between the VSD Logic Board and temperature, and fault information related to internal
the Chiller Control Board is made via a three-wire RS- VSD operating parameters such as DC Bus voltage,
485 opto-coupled data link. Communications between IGBT baseplate temperatures, VSD internal ambient,
the two boards occurs at the rate of 9600 baud. UART2 pre-charge relay status, power supply status, run relay
of the dual UART located on the Chiller Control Board status, motor overload, and supply single phase. The
is dedicated to internal communications and has a Chiller Control Board will poll the VSD Logic Board
higher priority interrupt than the external communica- for information continuously while the chiller is run-
tions UART1. The Chiller Control Board will control ning.
VSD start/stop, selection of which compressors to run,
and compressor speed. The VSD Logic Board will run IGBT Gate Driver Boards
the desired compressors at the speed requested by the 6
Chiller Control Board. The VSD will report back to
the Chiller Control Board, shutdown and safety infor-
mation related to internal VSD operation and the com-
pressor motors.
On power-up, the control panel will attempt to initial-
ize communications with the VSD. The Chiller Con-
trol Board will request initialization data from the
VSD Logic Board. The initialization data required is LD10613

the number of compressors and the VSD software ver-

sion. Once these data points have been received by the The IGBT Gate Driver Boards provide the ON and
control panel, the unit has successfully initialized and OFF gating pulses to the IGBT’s. The gating signals
will not request them again. originate from the VSD Logic Board and are changed
in level by the IGBT Gate Driver Board. The IGBT’s
If the Chiller Control Board does not receive initializa- in the inverter section of the VSD, change the DC Link
tion data from the VSD Logic Board in 8 seconds or voltage to a variable Voltage and Frequency output to
loses communications with the VSD for 8 seconds at the motor, to control the compressor motor speed. The
any time, the chiller will fault on a communications IGBT Gate Driver Boards also provides VCE SAT de-
failure. The Chiller Control Board will continue to send tection (short circuit detection) to safely turn off the
messages to the VSD Logic Board in an attempt to es- IGBT’s during a short circuit condition. When a short
tablish communications while the chiller is faulted. circuit occurs, the voltage (VCE SAT) across the IGBT
increases as a result of the high current. The IGBT Gate
Driver Board is an integral part of the IGBT assembly
for each compressor.

JOHNSON CONTROLS 193

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

Current Transformers Flash Tank Feed and Drain Valve Controller

LD10617

LD10619
CURRENT
TRANSFORMERS
The Flash Tank Feed and Drain Valve Controller is a
A current transformer on each phase sends current sig- microprocessor driven controller that operates the Feed
nals proportional to phase current to the VSD Logic and Drain Valves based on commands from the Chiller
Board. The output of each CT is buffered, scaled, and Control Board. The Feed and Drain Valves control the
sent to RMS to DC converters. These signals are then level of liquid in the flash tank and the superheat to
sent to an A-D converter, scaled, and sent to the Chiller the evaporator. The controller is a stand-alone valve
Control Board for current display and current limiting control module in the Control/VSD panel. The flash
control. tank liquid level is controlled by sequencing a stepper
motor valve (Feed Valve) on the inlet of the flash tank.
The highest current is also compared to the setting of The controller opens and closes the Feed Valve to con-
the Overload Adjustment Potentiometer on the VSD trol the liquid level of the refrigerant in the flash tank
Logic Board for overload safety sensing. based on commands from the Chiller Control Board.
Superheat is controlled by sequencing a stepper motor
DV/DT Output Suppression Network valve (Drain Valve) on the outlet of the flash tank. The
controller opens and closes the Drain Valve to control
flow to the evaporator and ultimately superheat to the
compressor based on commands from the Chiller Con-
trol Board.
Drain Valve superheat control is controlled by a PI
control algorithm based on suction pressure and suc-
tion temperature in the Chiller Control Board software.
The control algorithms will attempt to control the level
in the flash tank to approx 35% when the economizer is
energized. If the level exceeds 87.5%, the system will
fault. The normal 35% level may fluctuate apprecia-
bly when the economizer is off as the flash tank acts
as nothing more than a reservoir as the Drain Valve
LD10618 controls superheat. The level will also vary when the
economizer is first energized or a system transient oc-
DV/DT DV/DT
curs such as fan cycling, etc.
RESISTORS CAPACITORS
The controller is typically located in the back of the
The dV/dT Output Suppression Network limits the rate panel behind the power wiring terminal block/circuit
of rise of voltage and the peak voltage of the PWM breaker or on the wall of the panel on the left side of
pulses applied to the motor windings. This eliminates the cabinet.
the possibility of causing a turn-to-turn short in the mo-
tor due to winding insulation breakdown. The suppres-
sion network is made up of a 3-phase RC network.

194 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 6 - TECHNICAL DATA
ISSUE DATE: 09/30/2019

DC Bus Voltage Isolation Board CHILLER CONFIGURATION JUMPERS

There are a number of chiller configuration jumpers
that are factory wired into wire harnesses or plugs.
These jumpers typically never need to be reviewed un-
less in some unlikely situation, a chiller is incorrectly
configured or a loose connection occurs.

Number of Compressors Configuration

Jumper
LD10620
Software packs (EPROM’s) are common between
2, 3 and 4 compressor chillers. As a result, the VSD
The DC Bus Isolation Board allows the VSD Logic Logic Board must be configured for the actual num-
Board to read the voltage on the DC BUS without ber of compressors. The chiller is configured for the
exposing the VSD Logic Board to the high voltage. number compressors through the use of jumpers, fac-
Instead, the DC Bus Isolation Board contains a resis- tory plugged into the J1 plug on the VSD Logic Board.
tor network that forms voltage dividers with resistors This hard wiring configures the VSD Logic Board
on the VSD Logic Board, which steps down the volt- for the number of compressors on the chiller, avoid-
ages so that scaled down voltages proportional to the ing mis-programming. The jumpers are only checked
full and 1/2 bus voltages can be safely fed to the VSD at power-up. If no jumpers are sensed, or an invalid
Logic Board. The DC Bus Isolation Board supplies 3 combination is sensed and communicated to the Chill-
connections to the VSD Logic Board; plus bus, minus er Control Board, start-up of the unit will be inhibited
bus and half bus. and an “INVALID NUMBER OF COMPRESSORS
SELECTED” warning message will be displayed in
Chiller Circuit Breaker
the Status display. 6
Table 3 on page 195 shows the chiller number of
compressors and the associated location of the jumpers
to program the appropriate compressor configuration.

Table 3 - COMPRESSORS AND THE

APPROPRIATE JUMPER POSITIONS
# OF VSD LOGIC BOARD
COMPRESSORS JUMPER POSITION
2 J1-10 to J1-9
LD10623 3 J1-11 to J1-9
4 J1-12 to J1-9
An Optional Circuit Breaker may be supplied on the
input of the system. The incoming power will be fed
to the terminals on the circuit breaker. If the Circuit
Breaker Option is not selected, incoming power will
be fed to terminal blocks. The breaker also provides
ground fault protection. 2 and 3 compressor chillers
utilize one circuit breaker, while 4 compressor chillers
utilize 2 breakers.

JOHNSON CONTROLS 195

FORM 201.23-NM2
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ISSUE DATE: 09/30/2019

VSD LOGIC TO CHILLER MICROPROCESSOR MAXIMUM VSD FREQUENCY/MODEL

BOARD RS-485 COMMUNICATION DESIGNATOR
CONFIGURATION JUMPERS
The model number of the chiller determines the maxi-
The Chiller Control Board and the VSD Logic mum VSD frequency at 100% full speed. The maxi-
Boards communicate over an RS-485 link. The mum frequency is programmed by factory installed
communications link requires a matching address jumpers on the J7 plug of the Chiller Control Board.
to be set up at both ends. The VSD Logic Board Three digital inputs determine a binary code, which de-
communications bus is configured through the use of termines the maximum frequency. The inputs are read
jumpers, factory plugged into the J5 plug on the VSD as a 0 or low when a jumper is out or a 1 or high when
Logic Board. The VSD Logic Board will only check the wire jumper is inserted between the two pins. The
the jumper positions once at power-up. jumpers will only be checked once by the Chiller Con-
trol Board on power-up.
Table 4 on page 196 shows the VSD Logic Board Address
configuration and the associated location of the jump- Table 5 on page 196 shows the Chiller configuration
ers. The jumpers will vary according to the number of and the associated location of the jumpers.
VSD Logic Boards installed. All chillers utilize a sin-
gle VSD Logic Board and will use VSD Logic Board Table 5 - MAXIMUM FREQUENCY / MODEL
Address 1. DESIGNATOR JUMPER
CHILLER
Table 4 - VSD LOGIC BOARD ADDRESS JUMPER CONTROL J7-1 J7-3 J7-5
BOARD TO TO TO YCIV
VSD LOGIC BOARD'S VSD LOGIC BOARD
MAX. VSD J7-2 J7-4 J7-6
ADDRESS JUMPER POSITION
FREQUENCY
J5-1 to J5-2
0157 SA/PA,
1 and
0177 EA/VA,
J5-3 to J5-4
0187 SA/PA,
2 J5-3 to J5-4
0227 SA/PA,
3 J5-1 to J5-2 0227 EA/VA,
4 NONE 200 Hz 1 1 0
0247 SA/PA,
0247 EA/VA,
0267 SA/PA,
0357 SA/PA,
0397 SA/PA
196 Hz 1 1 1
0187 EA/VA,
0207 EA/VA,
192 Hz 0 1 0
0327 EA/VA,
0357 EA/VA
188 Hz 0 1 1 0307 SA/PA
0207 SA/PA,
186 Hz 1 0 0 0157 EA/VA,
0287 SA/PA
0177 SA/PA,
182 Hz 0 0 0 0197 EA/VA,
0267 EA/VA
178Hz 1 0 1 0287 EA/VA
178 Hz
0 0 1
(Spare)

196 JOHNSON CONTROLS

FORM 201.23-NM2
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SECTION 7 - OPERATION

OPERATING CONTROLS on and off together. An under voltage condition will

keep the heater off until full voltage is restored to the
Anti-recycle Timer system.
A typical 5 minute or 10 minute anti-recycle timer is not
necessary to allow compressor motor cooling, due to Pumpdown Control
the VSD’s ability to provide a low current inrush start. The VSD assures a smooth slow compressor start. As a
The system does utilize a fixed 120 second anti-recy- result of this, neither pumpdown on start-up or pump-
cle timer to prevent short cycling of systems and to al- down on shutdown is required. The Drain and Feed
low positioning the Feed and Drain Valves to a zero Valves will close when a compressor stops. This is a
(closed) position by the Flash Tank Drain and Feed similar to a liquid line solenoid valve closing on a con-
Valve Controller in the event of a power failure. ventional chiller.
On power-up of the control panel, the anti-recycle tim- Compressor Heater Control
er for each system will be set to 120 seconds and must
time out before a compressor is allowed to start. Each compressor has its own heater. The purpose of the
heater is to assure refrigerant does not condense in the
Whenever a system starts, the anti-recycle timer for all compressor. There is no oil sump, but refrigerant could
systems will be set to 120 seconds and will count down possibly condense in the rotors or the motor housing.
from the time the motor starts. The timer must time out The heater will be off whenever the respective com-
before another compressor is allowed to start. pressor is running. As soon as the compressor shuts off,
the heater will turn on as long as all motor temperature
Whenever a system shuts down, the anti-recycle timer
sensors in the compressor read less than158°F. The
for that system will be set to 120 seconds. The timer
heater will turn off, if any internal compressor motor
must time out before the system is allowed to restart.
temperature sensor reads more than160°F.
Evaporator Pump Control
Alarms
The evaporator pump dry contacts are energized when
any of the following conditions are true:
Each system has its own alarm. The Alarm output is ON 7
(dry contact closed) when no fault condition is pres-
• If a Low Leaving Chilled Liquid Fault occurs. ent and OFF (dry contact open) to indicate an alarm
situation. The Alarm should be activated (contact
• Whenever a compressor is running. open), if any of the following are true.
• The Daily Schedule is ON and the UNIT switch • A System is faulted or inhibited from starting for
is ON. more than 5 seconds.
Even if one of above is true, the pump will not run if • The Unit is faulted or inhibited from starting for
the panel has been powered up for less than 30 seconds more than 5 seconds.
or if the pump has run in the last 30 seconds to prevent
pump motor overheating. • A System is locked out.

Evaporator Heater Control • The Unit is locked out.

The evaporator heater is controlled by ambient • Power is removed from the chiller.
air temperature. If no systems are running and the
Chiller Run Contact
ambient temperature drops below 40°F, the heater is
turned on. If no systems are running and the tempera- The Chiller Run dry contact is closed whenever any
ture rises above 45°F the heater is turned off. Whenever system is running. It is open when all systems are shut
a system is running, the evaporator heater is turned off. off.
Both evaporator heater outputs will always be turned

JOHNSON CONTROLS 197

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Unit Switch BASIC OPERATING SEQUENCE

Start Sequence and Loading

To initiate the start sequence of the chiller, the follow-
ing conditions must be satisfied before the precharge of
the DC Bus will take place:
• SWITCH must be ON.
• At least one System Switch is ON
• Run permissive inputs (Remote Cycling Contacts)
must be closed.
• No unit faults exist.
• No unit start inhibits exist.
• At least one system not faulted or inhibited.
LD10605
UNIT • The Daily Schedule is calling for the chiller to
SWITCH run.
• The Flow Switch is closed.
A double pole single throw ON/OFF rocker switch on
the front of the control panel is used to turn the entire • Leaving Chilled Liquid Setpoint is above the
chiller on and off. When the switch is placed in the Setpoint plus CR (Setpoint High Limit).
OFF position, the entire unit shuts down immediately.
Once the precharge takes place, if the anti-recycle tim-
One pole of the UNIT switch contacts is wired to the
er is timed out the chiller control system on the Chiller
Sys 1/3 and the other to Sys 2/4 VSD Run Signal input
Control Board will select the number of compressors
and the Chiller Control Board “UNIT switch X” digital
to start and begin operation of the compressors. The
input (X equals System 1 or 2). Separate System Fuses
compressor(s) speed will be ramped to the minimum
are also wired in series with each set of UNIT switch
start frequency and increase speed as needed in an ef-
contacts. If either fuse is pulled or blown, only the sys-
fort to regulate the leaving chilled liquid temperature to
tem with the good fuse (Input is high) will run. When
meet the desired Setpoint.
both inputs are high, the entire chiller will be enabled
to run. When both inputs are low, the chiller will be When a compressor starts, the Feed and Drain Valves
disabled as a UNIT switch OFF Shutdown. on the system will immediately begin to control super-
The UNIT switch should never be used to heat and the liquid level in the flash tank and the Chill-
shut down the chiller except in an emer- er Control Board microprocessor will begin to regulate
gency. When the switch is thrown, the the speed on the VSD to bring the chilled liquid tem-
compressors will immediately shut down. perature to within the Control Range (CR). The micro-
Since the compressors are not permitted processor will regulate the speed of the compressor(s)
to come to a controlled stop, the rotors primarily based on temperature offset as the loading
may back-spin, which may result in some timer permits.
unusual compressor noise. The back-spin
will not hurt the compressors, but should
be avoided.
It is suggested that the System Switches
on the keypad be used whenever possible
to turn a system off and allow the com-
pressor to complete a controlled shut-
down.

198 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

48˚F --------------------------------------------------

46˚F --------- Setpoint + CR ( Setpoint High Limit) ----------

44˚F ----------Setpoint ---------------------------------

Programmed
42˚F ----------Setpoint – CR (Setpoint Low Limit) ---------- Control (Cooling) Range

40˚F --------------------------------------------------

38˚F --------------------------------------------------
LD10625
Figure 49 - CHILLER CONTROL (COOLING) RANGE

The Setpoint is the Leaving Chilled Liquid Tempera- cisions on the number of compressors to start based
ture midpoint of the Control (Cooling) Range. The on chilled liquid temperatures and prior compressor
Setpoint High Limit is the Setpoint plus the Control operation when starting the chiller. An additional com-
Range. The Setpoint Low Limit is the Setpoint minus pressor is only started when the lead compressor has
the Control Range. The chiller will attempt to con- reached maximum speed and cooling requirements are
trol within the temperature range programmed by the not satisfied.
Setpoint plus or minus CR.
Optional Optimized High IPLV
Starting and stopping of compressors will be handled
by the Standard or High IPLV Capacity Control Rou- On optimized IPLV chillers, the Number of
tine. Loading and unloading will be controlled by tem- Compressors to Start Logic will be used to determine
perature offset and rate by the Fuzzy Logic Control how many compressors should be run when the unit
Routine. starts from the all compressors stopped state. This rou-
tine will try to run all the compressors unless it is deter-
A graphical representation of the Setpoint and high and mined that less will be needed due to light load.
low limit (plus or minus CR) are shown in Figure 49 7
on page 199. The first step in the sequence is for the microprocessor
to set the number of compressors to start equal to the
NUMBER OF COMPRESSORS TO START number of compressors in the chiller. The micropro-
cessor will look at two prior conditions relating to the
General compressor operating time the previous time it ran and
The number of compressors to start control logic varies how long the last compressor has been off along with
between the standard and optional High IPLV chillers. two indicators of chilled liquid load requirements (rate
Standard IPLV chiller control utilizes sequential logic of change of chilled liquid temperature and deviation
that requires the microprocessor to start 1 compressor from setpoint). Temperature deviation is the amount of
at a time and only add a compressor when all running error compared to the setpoint high limit (Setpoint plus
compressors reach maximum speed. Optional High CR). Based on this information, the microprocessor
IPLV chillers have control algorithms that provide will then determine the number of compressors to start.
“smart” anticipatory control to determine how many The flowchart in Figure 50 on page 200 describes the
compressors need to be started to satisfy the current compressor starting decision process.
load. The “smart” logic is capable of reducing short It is desirable to run as many compressors as possible
cycling, and reducing loading time on a hot water start, for increased efficiency. Optimized logic will keep as
and starting all compressors at the same time. many compressors on line and reduce speed in an ef-
fort to optimize the use of the entire evaporator tube
Standard IPLV
surface.
The Standard IPLV control always starts a single com-
pressor under all circumstances as the first step of
loading. The Chiller Control Board does not make de-

JOHNSON CONTROLS 199

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

NUMBER OF COMPS
TO START LOGIC NUMBER OF COMPS TO
START
REDUCTION TABLE

4 COMPS -> 3 COMPS

3 COMPS -> 2 COMPS
SET NUM COMPS 2 COMPS -> 1 COMP
TO START = NUM 1 COMP -> 1 COMP
COMPS IN UNIT

NO NO

LCHLT RATE
LAST RUN TIME OFF TIME
< 3 °F/MIN AND
< 5 MIN ? < 5 MIN ?
LCHLT < CR+5°F?

YES YES YES

REDUCE NUM COMPS REDUCE NUM COMPS REDUCE NUM COMPS NO

TO START PER TO START PER TO START PER
REDUCTION TABLE REDUCTION TABLE REDUCTION TABLE

CONTINUE

LD10626

Figure 50 - NUMBER OF COMPRESSORS TO START

MINIMUM VSD COMPRESSOR START / RUN

100
FREQUENCY 95
Minimum VSD Frequency (Hz)

90
Minimum VSD Start Frequency 85
80
The Minimum VSD Compressor Start Frequency is 75
based on ambient temperature and determines the 70
frequency (speed) the compressor(s) is ramped to at 65
60
start. At higher ambients, higher speeds are needed
55
to provide adequate motor cooling. At low ambients, 50
higher motor speeds are needed to develop oil pressure 45

differential at start. The temperature ranges and the as- 40

105 110 115 120 125 130
sociated start frequency follows the guidelines below: Ambient Temperature (°F)

• If the ambient temperature is 25°F or less, the NOTE: The graph above also illustrates the scaled frequency:
Minimum VSD Start Frequency will be 70 Hz. LD10627

• If the ambient temperature is between 26°F and Figure 51 - MINIMUM VSD START FREQUENCY
40°F (-3°C and 4°C), the Minimum VSD Start
Frequency is 60 Hz. • Above 125°F, the minimum VSD Start Frequency
is 95 Hz.
• If the ambient temperature is between 41°F and
110°F (5°C and 43°C), the Minimum VSD Start Minimum VSD Run Frequency
Frequency will be 50 Hz.
The Minimum VSD Compressor Run Frequency is
• If the ambient is between 110°F and 125°F (43°C based on ambient temperature and determines the
and 52°C), the Minimum VSD Start Frequency is minimum frequency (speed) the compressor(s) is per-
scaled according to the following formula: mitted to run as the system unloads. At high ambients,
higher motor speeds are needed to cool the compressor
(3 x Ambient Temperature) - 280°F.
motor. The temperature ranges and the associated start
The formula is also represented by the graph in Figure frequency follows the guidelines below:
51 on page 200.
• If the ambient temperature is less than110°F, the
Minimum VSD Run Frequency will be 50 Hz.

200 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

• If the ambient is between 110 and 125°F (43 and When a compressor stops, back-spin of the compres-
52°C), the Minimum VSD Run Frequency is sor will often occur as the pressure differential between
scaled according to the following formula: discharge and suction equalizes. This should not be a
cause of concern.
(3 x Ambient Temperature) - 280°F.
The formula is also represented by the graph in Figure STANDARD IPLV CAPACITY CONTROL
52 on page 201. (Loading/Unloading and starting additional compressors)

100 Standard IPLV Capacity Control is installed in the

95 chiller at the factory using a dedicated EPROM (soft-
Minimum VSD Frequency (Hz)

90
85
ware), part # 031-02476-001, for “Standard Only”
80 IPLV control. If the LCHLT is more than the pro-
75 grammed Setpoint plus CR, only a single compressor
70
65
is permitted to start under Standard IPLV control. The
60 compressor will start at the minimum start frequency
55 based on ambient temperature (Page 214). The lead
50
45
compressor Feed and Drain Valves will immediately
40 begin to control superheat and liquid level in the flash
105 110 115 120 125 130 tank.
Ambient Temperature (°F)
When a compressor starts, the load and unload timers
NOTE: The graph above also illustrates the scaled frequency:
LD10628 will be set to 30 seconds. During the first 30 seconds
of operation after a compressor reaches the start fre-
Figure 52 - MINIMUM VSD RUN FREQUENCY
quency, loading/unloading is inhibited.

• If the ambient temperature is more than 125°F, the After 30 seconds, the control logic looks at the LCHLT
Minimum VSD Run Frequency will be 95 Hz. temp, compares it to the Setpoint plus CR, and makes
decisions to load or unload.
ACCELERATION / DECELERATION
RATE WHEN STARTING / STOPPING For precise capacity control, the Chiller Control Board
COMPRESSORS microprocessor loads and unloads compressors quick- 7
ly, as fast as every 2 seconds, in increments of 0.1 to
VSD Acceleration and Deceleration Rates 1 Hz each time a load or unload change is required.
The acceleration rate changes with frequency and fol- Fixed load and unload timers of 2 sec. are set, after a
lows the guidelines below: speed change of 0.11 to 1 Hz, to minimize undershoot
and overshoot.
• Between 0 Hz and 50 Hz, the acceleration is 10
Hz/s. As additional cooling is required (LCHLT more than
Setpoint plus CR), the Chiller Control Board micro-
• Between 50 Hz and 200 Hz, the acceleration is processor will increase the speed of the compressor at
30.4 Hz/s. Even though the acceleration rate of the rate of 0.1 Hz to 1 Hz every 2 seconds until the load
30.4 Hz/s is possible up to 200 Hz, the frequency is satisfied. Loading will continue to occur as long as
(speed) is limited by the minimum start frequency leaving chilled liquid temperature is above the Setpoint
and the add a compressor frequency calculation plus CR.
performed by the microprocessor when bringing
on an additional compressor. If the temperature falls very near or within the Control
Range, the Chiller Control Board microprocessor will
When decelerating, the deceleration rate changes with make decisions regarding speed changes under condi-
frequency and follows the guidelines below: tions where the “error” and “rate” conflict. Under these
• Between 200 Hz and 100 Hz, the deceleration conditions, loading/unloading follows the guidelines
time is 30.4 Hz/s. described in the Fuzzy Logic Control on page 205.

• Between 100 Hz and 0 Hz, the deceleration time

is 10 Hz/s.

JOHNSON CONTROLS 201

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

If the compressor speed exceeds the maximum In this example, one compressor will be shut down
frequency the compressor is allowed to operate minus when the speed of the compressors drops to 200 Hz x
1 hertz for a period of 3 minutes without bringing the (2-1)/2 = 100 Hz to 20 Hz = 80 Hz.
leaving chilled liquid temperature to within Setpoint
plus CR/2, the chiller control will make a decision to The restart frequency for the compressor(s) after re-
start another compressor. At this point, the first com- moving a lag compressor is the OFF FREQ. The OFF
pressor will decelerate to a frequency of 5 Hz. Reduc- FREQ is designated as:
ing the frequency of the running compressor to 5 Hz OFF FREQ = Current VSD Freq x (Number of compressors enabled +1)
enables the differential between discharge and suction Number of Compressors enabled
For example: 8
0 Hz = current freq of the chiller in the example above.
pressure to be reduced to a point where it will not affect Number of compressors enabled at shutdown = 1
motor current when the running compressor is ramped
up. It also reduces the possibility of backspin on the In the example above, one compressor will restart at
running compressor. The next lag compressor will be 160 Hz as calculated in the formula below:
activated and all compressors will be accelerated to the 80 Hz x (1+1) = 160 Hz
START FREQ. The START FREQ is specified by the 1
formula:
The load timer will also be set to 30 seconds and the
START FREQ = Current VSD Freq x (Number of Compressor enabled -1) unload timer will be set to 10 seconds.
Number of Compressors enabled
For example: Current VSD Freq = max freq of the chiller = 200 Hz. On 3 and 4 compressor chillers, if frequency (speed)
Number of compressors enabled = 2 = Original
compressor running, plus the compressor to be added. drops below the LESS COMP FREQ – 20 Hz or the
minimum VSD frequency, whichever is higher, anoth-
In this example, assume a single compressor had er lag compressor will be shut down using the same
been running at the max frequency of 200 Hz without guidelines.
satisfying cooling demand. (2) compressors are now
When the system is only operating a single (lead) com-
enabled when the second compressor is activated. Plac-
pressor, if temperature continues to stay below the
ing these values in the formula, the START Frequency
Control Range (Setpoint – CR) or continues to drop
equals 200 Hz x (2-1)/2 equals 100 Hz. The compres-
while in the Control Range, the Chiller Control Board
sors will be accelerated to a start frequency of 100 Hz.
microprocessor will unload the compressor at the rate
Load and unload timers will be set to 30 seconds. The
of 0.1 Hz to 1 Hz every 2 seconds. This will continue
anti-recycle timer will bew set to 120 seconds.
until the frequency drops below the Minimum VSD
If additional cooling is required, after the initial 30 sec- Frequency determined by the ambient temperature. At
onds of operation, loading will occur at the rate of 0.1 this point, the lead compressor will be shut down, if
Hz to 1 Hz every 2 seconds, unless load limiting oc- temperature is below the Setpoint - CR.
curs.
Fuzzy Logic Control
If the cooling capacity exceeds the demand and tem- The fuzzy logic control in software makes decisions to
perature continues to drop while in the Control Range increase or decrease speed according to the error or de-
(CR) with multiple compressors operating, the Chiller viation from Setpoint, and the rate of change of chilled
Control Board microprocessor will decrease the speed liquid temperature. Before making a change in speed,
of the compressor(s) at the rate of 0.1 to 1 Hz every the Chiller Control Board microprocessor will look at
2 seconds until the LCHLT stabilizes within the Con- the load and unload timers to assure they are timed out.
trol Range. If frequency (speed) drops below the LESS It also looks to assure there is no load limiting in effect.
COMP FREQ – 20 Hz or the minimum VSD frequen- Each time a change is made, the incremental change in
cy, whichever is higher, the compressors will be decel- speed is still between 0.1 and1 Hz, unless temperatures
erated to a speed of 5 Hz, the last compressor disabled, fall near the leaving chilled liquid cutout.
and the remaining compressor(s) restarted minus one
lag compressor. The LESS COMP FREQ is designated In most situations, when the chilled liquid tempera-
as: ture is above the Setpoint plus CR, the Chiller Con-
trol Board microprocessor will continue to increase
LESS COMP FREQ = Max VSD Freq x (Number of compressor enabled -1)
Number of Compressors enabled the speed of the compressor(s) to load the chiller until
For example: 200 Hz = max freq of the chiller. temperature drops in the general range of the Setpoint
Number of compressors enabled before shutdown = 2

202 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

High Limit (Setpoint plus CR). If the rate of change is elect to increase the speed of the compressor(s) if the
dropping too fast and there is potential for overshoot, error is “0” (temperature is at Setpoint), while the rate
the Chiller Control Board microprocessor may elect of change of chilled liquid temperature is “positive”
not to continue to increase speed. (rising). The Chiller Control Board microprocessor
may also elect to hold capacity when error is “nega-
In cases where temperature is dropping too fast when tive” (temperature is below Setpoint) because the rate
temperature is within the desired Control Range, the of change of chilled liquid is “positive” (rising). Table
microprocessor will be required to make decisions re- 6 on page 203 illustrates these conditions and the
garding speed changes under conditions where the “er- loading response from the Chiller Control Board mi-
ror” and “rate” conflict. For example, the microproces- croprocessor.
sor may elect to decrease the speed of the compressor(s)
if the error is “0” (temperature is at Setpoint), while the Hot Water Starts
rate of change of chilled liquid temperature is falling
On a hot water start under "best" case conditions, as-
(negative). The Chiller Control Board microprocessor
suming power has not been removed and the 120 sec-
may also elect to hold the speed when error is “posi-
ond timer does not inhibit starting, the design of the
tive” (temperature is above Setpoint, but not above
control algorithm for a 2compressor Standard IPLV
Setpoint plus CR) because the rate of change of chilled
leaving chilled liquid capacity control allows full load-
liquid is “negative” (falling). Table 6 on page 203 il-
ing of a chiller in slightly more than 14 1/2 minutes,
lustrates these conditions.
regardless of the number of compressors. This time pe-
Table 6 - FUZZY LOGIC LOADING/UNLOADING
riod assumes load limiting does not affect the loading
VS. ERROR sequence and the ambient is above 40°F.
NEGATIVE ZERO ER- POSITIVE Lag Compressor Operation in Load Limiting
ERROR ROR ERROR
When a single compressor is operating in current, dis-
NEGATIVE
RATE
UNLOAD UNLOAD HOLD charge pressure, suction pressure, VSD internal ambient,
ZERO
or VSD baseplate temperature limiting for more than
UNLOAD HOLD HOLD 5 minutes and chilled liquid temperature is more than
RATE
POSITIVE Setpoint plus CR, the Chiller Control Board micropro-
HOLD LOAD LOAD cessor will turn on the lag compressor to bring the chilled
RATE 7
liquid temperature within the Control Range. After 1
To avoid overshoot or nuisance trips on the low chilled hour the Chiller Control Board microprocessor will shut
liquid cutout, when the temperature is below the down the lag compressor and attempt to control tempera-
Setpoint – CR/2, the Chiller Control Board micropro- ture with only the lead compressor to satisfy the load.
cessor will reduce the speed of the compressor(s) to
unload the chiller by 2.0 Hz every 2 seconds. If tem- OPTIONAL HIGH IPLV CAPACITY CONTROL
perature drops to within 1.0°F above the Low Chilled
(Loading/Unloading and starting additional compressors)
Liquid temp Cutout, the Chiller Control Board micro-
processor will unload the compressors at the rate of 4.0 Optional High IPLV Capacity Control is installed in
Hz every 2 seconds. the chiller at the factory using a dedicated EPROM
(software), part # 031-02476-002, for High IPLV con-
As the temperature rises the microprocessor’s fuzzy
trol. Its purpose is to control compressors as effectively
logic will factor in the rate of change before continuing
as possible, optimizing control of both the compressors
to unload. If the rate of change is rising too fast and
and condenser fans. If the LWT is more than the pro-
there is potential for a positive overshoot, the Chiller
grammed Setpoint plus CR, the Chiller Control Board
Control Board microprocessor may elect not to con-
microprocessor will follow the flow chart (Page 214)
tinue to decrease speed.
to determine the number of compressors to start based
In cases where temperature is rising too fast, when on the last run time, time off, and the rate of change
temperature is within the desired Control Range, the of chilled liquid temperature. The compressor(s) will
Chiller Control Board microprocessor will be required start at the minimum start frequency based on ambient
to make decisions regarding speed changes under con- temperature (Page 214). The respective system Feed
ditions where the “error” and “rate” conflict. For ex- and Drain Valves will immediately begin to control su-
ample, the Chiller Control Board microprocessor may perheat and liquid level in the flash tank.

JOHNSON CONTROLS 203

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

When compressors start, the load and unload timers When a compressor is to be added, the Chiller Con-
will be set to 30 seconds. During the first 30 seconds of trol Board microprocessor decelerates the compressor
operation after a compressor reaches the start frequen- VSD frequency to 5 Hertz. This enables the differential
cy, loading/unloading is inhibited. After 30 seconds, between discharge and suction pressure to be reduced
the control logic looks at the LWT temp, compares it to a point where it will not affect motor current when
to the Setpoint plus CR, and makes a decision to load the compressor is restarted. It also reduces the chance
or unload. for backspin on the running compressor. The next lag
compressor is activated and all compressors are accel-
For precise capacity control, the Chiller Control Board erated to the START FREQUENCY. The START FRE-
microprocessor loads and unloads compressors quick- QUENCY is calculated as:
ly, as fast as every 2 seconds, in increments of 0.1 Hz
to 1 Hz each time a load or unload change is required. START = Current VSD Freq x (Number of Compressors Running –1)
FREQUENCY Number of Compressors Running
Fixed load and unload timers of 2 seconds are set, after
a speed change of 0.1 Hz to 1 Hz, to minimize under-
shoot and overshoot. With 2 compressors now running and a current VSD
frequency of 115 HZ, the start frequency will be com-
As additional cooling is required (LCHLT more than puted as:
Setpoint plus CR), the Chiller Control Board micro- 115 Hz x (2-1) = 115 = 58 Hz
processor will increase the speed of the compressor at 2 2
the rate of 1 Hz every 2 seconds until the load is satis-
fied. Loading will continue to occur as long as leaving When the compressors restart, loading and unload-
chilled liquid temperature is above the Setpoint plus ing is inhibited for 30 seconds after the compressor(s)
CR. reaches the start frequency, as is the case on any com-
pressor start. The anti-recycle timer will be set to 120
The chiller control board will be make decisions re- sec.
garding speed changes under conditions where the “er-
ror” and “rate” conflict. Under these conditions, load- In a situation where a single compressor on a 2 com-
ing/unloading follows the guidelines described in the pressor chiller is running and is in load limiting for
Fuzzy Logic Control on page 202. any reason, and LCHLT more than Setpoint plus CR
for less than 5 minutes, but more than 30 seconds, the
If chilled liquid temperature is not satisfied and above microprocessor will reset the load/unload timers to 2
Setpoint plus CR, the microprocessor looks to see if seconds every “potential” load cycle. When LCHLT
any of the lag compressors are not running. If any lag more than Setpoint plus CR for more than 5 minutes,
compressor(s) is off, the Chiller Control Board micro- the microprocessor will enable the lag compressor just
processor looks at the VSD output frequency. If the as it were not satisfied and determine a second com-
VSD output frequency is greater than the ADD COM- pressor was required to handle the load, since the lead
PRESSOR FREQUENCY plus 15 Hz or equal to the compressor is load limited.
maximum chiller speed (frequency), the microproces-
sor starts an additional compressor. The ADD COM- If the cooling capacity exceeds the demand (LCHLT
PRESSOR FREQUENCY is calculated as: less than Setpoint – CR/2) and multiple compressors
are operating, the Chiller Control Board microproces-
ADD = Minimum Start Freq x (Number of Compressors Running +1)
COMPRESSOR Number of Compressors Running
sor will decrease the speed of the compressors at the
FREQUENCY rate of 0.1 to 1 Hz every 2 seconds until the LCHLT
rises to within the Control Range. If temp remains be-
Example - A single compressor had been running with- low Setpoint – CR/2, rate is falling, and speed falls to
out satisfying cooling demands. Assume the minimum the minimum VSD frequency as determined by the
VSD start frequency based on ambient is 50 Hz for this ambient, the VSD will decelerate all compressors to 5
example. The number of compressors running in the Hertz. The last lag compressor will be shut down. The
formula will equal to 1. Placing the values into the for- remaining compressors will be restarted minus the lag
mula: 50 Hz x (1+1)/1 = 100 Hz. The add compressor compressor. The lead compressor will restart and ac-
frequency will equal 100 Hz. Since the controls are decelerate to the STOP COMP FREQ designated as:
signed to add a compressor at a frequency 15 Hz above
this point, a compressor will be added if the speed
reaches 115 Hz.

204 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

STOP = Minimum VSD Freq x (Number of Compressors Running +1) In cases where temperature is dropping too fast, when
COMP FREQ Number of Compressors Running temperature is within the desired Control Range, the
In this example: Number of compressors running = 1
Minimum VSD Freq.= 50 Hz
Chiller Control Board microprocessor will be required
to make decisions regarding speed changes under
conditions where the “error” and “rate” conflict. For ex-
In the example above, one compressor will restart at
ample, the Chiller Control Board microprocessor may
100 Hz as indicated in the formula below:
elect to reduce the speed of the compressor(s) if the error is
50 Hz x (1+1) = 100 Hz
1
“0” (temperature is at Setpoint); while the rate of change
of chilled liquid temperature is “negative“(falling).
The load timer will also be set to 30 seconds and the The Chiller Control Board microprocessor may
unload timer will be set to 10 seconds. also elect to hold capacity when error is “positive”
(temperature is above Setpoint, but not above Setpoint
On 3 and 4 compressor chillers, if temperature stays plus CR) because the rate of change of chilled liquid is
below the Setpoint minus the Control Range/2, “negative” (falling). Table 7 on page 205 illustrates
another lag compressor will be shut down using the these conditions.
same guidelines.
Table 7 - FUZZY LOGIC LOADING/UNLOADING
When the system is only operating a single (lead) com-
VS. ERROR
pressor, if temperature continues to stay below the
Control Range (Setpoint minus CR), the Chiller Con- NEGATIVE ZERO ER- POSITIVE
ERROR ROR ERROR
trol Board microprocessor will unload the compressor
at the rate of 1 Hz every 2 seconds. This will continue NEGATIVE
UNLOAD UNLOAD HOLD
RATE
until the frequency drops below the Minimum VSD
Frequency determined by the ambient temperature. At ZERO
UNLOAD HOLD HOLD
RATE
this point, the lead compressor will be shut down.
POSITIVE
HOLD LOAD LOAD
RATE
Fuzzy Logic Control
The fuzzy logic control in software makes deci- When temperature is significantly below the Setpoint
sions to load or unload according to the error or minus CR/2, the Chiller Control Board microprocessor
deviation from Setpoint, and the rate of change of will reduce the speed of the compressor(s) to unload 7
chilled liquid temperature. Before making a change in the chiller by 2.0 Hz every 2 seconds. If temperature
speed, the logic will look at the load and unload tim- drops to within 1.0°F above the Low Chilled Liquid
ers to assure they are timed out. It also looks to assure Temperature Cutout, the Chiller Control Board mi-
there is no load limiting in effect. Each time a change croprocessor will unload at the rate of 4.0 Hz every
is made, the incremental change in speed is still 0.1 to 2 seconds.
1 Hz, unless temperatures fall near the leaving chilled
liquid cutout. As the temperature rises toward Setpoint minus CR,
the Chiller Control Board microprocessor’s fuzzy logic
In most situations, when the chilled liquid tempera- will begin factoring in the rate of change before con-
ture is above the Setpoint plus CR, the Chiller Con- tinuing to unload. If the rate of change is rising too fast
trol Board microprocessor will continue to increase and there is potential for overshoot, the Chiller Control
the speed of the compressor(s) to load the chiller Board microprocessor may elect not to decrease speed.
until temperature drops in the general range of the
Setpoint High Limit. As the temperature drops and In cases where temperature is rising too fast, when
approaches the Setpoint High Limit (Setpoint plus temperature is within the desired Control Range, the
CR), the microprocessor’s fuzzy logic will begin fac- Chiller Control Board microprocessor will be required
toring in the rate of change before continuing to load. to make decisions regarding speed changes under con-
If the rate of change is dropping too fast and there ditions where the “error” and “rate” conflict. For ex-
is potential for overshoot, the Chiller Control Board ample, the Chiller Control Board microprocessor may
microprocessor may elect not to continue to increase elect to increase the speed of the compressor(s) if the
speed. error is “0” (temperature is at Setpoint), while the rate

JOHNSON CONTROLS 205

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

of change of chilled liquid temperature is “positive” Motor Current Load Limiting/Unloading

(rising). The Chiller Control Board microprocessor Motor current load limiting helps prevent the system
may also elect to hold capacity when error is “nega- from tripping on the motor overload safety. The motor
tive” (temperature is below Setpoint) because the rate “Current Limit Setpoint” is based on %FLA motor cur-
of change of chilled liquid is “positive” (rising). Table rent and is programmable under the PROGRAM key
7 on page 205 illustrates these conditions and the re- or may be set by a remote device. Motor current load
sponse from the Chiller Control Board microprocessor. limiting prevents the system from loading even though
increased loading may be required when the current is
Hot Water Starts
between the “Current Limit Setpoint minus 2%” and
On a hot water start under “best” case conditions, as- the “Current Limit setpoint”. Between the “Current
suming power has not been removed and the 120 sec Limit Setpoint” and the “Current Limit Setpoint plus
timer does not inhibit starting, the design of the con- 5%”, the system will unload every 2 seconds according
trol algorithm for a 2 compressor High IPLV leaving to the amount current is exceeding the “Current Limit
chilled liquid capacity control allows full loading of a Setpoint”. At the “Current limit Setpoint”, 0 Hz reduc-
chiller in slightly more than 6 minutes, regardless of tion in speed will take place and at the “Current Limit
the number of compressors, if all the compressors start Setpoint plus 5%”, a 10 Hz speed reduction will take
at the same time. This time period assumes load limit- place. Between the “Current Limit Setpoint” and “Cur-
ing does not affect the loading sequence and the ambi- rent Limit Setpoint plus 5%”, unloading will occur ac-
ent is above 40°F. cording to the Table 8 on page 206.
LOAD LIMITING CONTROL Table 8 - CURRENT LIMIT LOAD LIMITING/
UNLOADING
Load Limiting
CURRENT LIMIT SETPOINT UNLOADING
The Load Limiting Controls are intended to prevent a
system from reaching a safety trip level. Load limit- Current Limit Setpoint -2% to +0% 0 Hz
ing controls prevent loading or unload compressors to Current Limit Setpoint +1% 2 Hz
prevent tripping on a safety. Limiting controls operate Current Limit Setpoint +2% 4 Hz
for Motor Current %FLA, Suction Pressure, Discharge Current Limit Setpoint +3% 6 Hz
Pressure, VSD Baseplate Temperature, and VSD Inter- Current Limit Setpoint +4% 8 Hz
nal Ambient Temperature. Current Limit Setpoint +5% 10 Hz
All running system’s load limit control values are
Discharge Pressure Load Limiting/Unloading
checked every 2 seconds. Load limiting prevents a
system from loading (no increase even though cooling Discharge pressure load limiting protects the condens-
demand requires loading) when the specific operating er from experiencing dangerously high pressures. A
parameter is within a specific range of values. If the system is permitted to load normally as long as the dis-
value is above the range where loading is inhibited, the charge pressure is below the High Discharge Pressure
logic will unload the chiller based on the amount (%) Cutout minus 20 psig. Between Cutout minus 20 psig
the limit has been exceeded. Load limiting affects all and Cutout minus 15 psig loading is inhibited even
compressors, even though only one system may be af- though increased loading may be required. Between
fected. Cutout minus 15 psig and the Discharge Pressure Cut-
out, forced unloading is performed every 2 seconds ac-
If more than one operating parameter is exceeding cording to Table 9 on page 207. The discharge pres-
the value where unloading is required, the value with sure unload point is fixed at 255 psig.
the highest amount of unloading will determine the
unloading. All load limiting controls are active at start-
up except suction pressure limiting.

206 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Table 9 - DISCHARGE PRESSURE LOAD Suction pressure load limiting is active at start-up, to
LIMITING/UNLOADING only prevent loading of the compressors. Suction pres-
DISCHARGE PRESSURE UN-LOADING sure limit unloading will not occur until the system run
time reaches 5 minutes of operation to allow the sys-
Discharge Pressure Cutout- 20 psig
& 0 Hz
tem to stabilize.
Discharge Pressure Cutout- 15 psig
VSD Internal Ambient Temperature Load
Discharge Pressure Cutout- 13.5 psig 1 Hz Limiting
Discharge Pressure Cutout- 12 psig 2 Hz
VSD Internal Ambient temperature limiting helps pre-
Discharge Pressure Cutout- 10.5 psig 3 Hz
vent the unit from tripping on the high internal cabinet
Discharge Pressure Cutout- 9 psig 4 Hz temperature safety. A system is permitted to load nor-
Discharge Pressure Cutout- 7.5 psig 5 Hz mally as long as the VSD Internal Ambient is below
Discharge Pressure Cutout- 6 psig 6 Hz the VSD Internal Ambient Cutout minus 3°F. Between
Discharge Pressure Cutout- 4.5 psig 7 Hz VSD Internal Ambient Cutout minus 3°F and the VSD
Discharge Pressure Cutout- 3 psig 8 Hz
Internal Ambient Cutout minus 2°F, loading is inhibit-
ed, even though increased loading is required. Between
Discharge Pressure Cutout- 1.5 psig 9 Hz
the VSD Internal Ambient Cutout minus 2°F and the
Discharge Pressure Cutout- 0 psig 10 Hz
VSD Internal Ambient Cutout, forced unloading is per-
formed every 2 seconds according to Table 11 on page
Suction Pressure Load Limiting/Unloading
207 below. The VSD Internal Ambient Safety Cutout
Suction pressure load limiting helps to protect the is 158°F.
evaporator from freezing. A system is permitted to load
normally as long as the Suction Pressure is above the Table 11 - VSD INTERNAL AMBIENT LOAD
Suction Pressure Cutout plus 2 psig. Between Cutout LIMITING/UNLOADING
plus 2 psig and the Cutout, loading is inhibited, even VSD INTERNAL
UN-LOADING
though increased loading is required. Between the AMBIENT TEMPERATURE
Suction pressure Cutout and Suction Pressure Cutout Internal Ambient Temp. is between
0 Hz
minus 10 psig, forced unloading is performed every Cutout- 3ºF & Internal Ambient Cutout- 2ºF
2 seconds according to Table 10 on page 207. This Internal Ambient Cutout- 1.8ºF 1 Hz
situation would occur if the suction pressure cutout 7
Internal Ambient Cutout- 1.6ºF 2 Hz
transient override control is in effect (See “Low Suc- Internal Ambient Cutout- 1.4ºF 3 Hz
tion Pressure Cutout”, Page 247). The suction pressure
Internal Ambient Cutout- 1.2ºF 4 Hz
cutout is programmed under the PROGRAM key. The
Internal Ambient Cutout- 0ºF 5 Hz
default Suction Pressure Cutout is set at 24.0 psig.
Internal Ambient Cutout- 0.8ºF 6 Hz
Table 10 - SUCTION PRESSURE LOAD LIMITING/ Internal Ambient Cutout- 0.6ºF 7 Hz
UNLOADING Internal Ambient Cutout- 0.4ºF 8 Hz
SUCTION PRESSURE UN-LOADING Internal Ambient Cutout- 0.2ºF 9 Hz
Internal Ambient Cutout 10 Hz
Suction Pressure is between
Cutout +2 psig & 0 Hz
Suction Pressure Cutout VSD Baseplate Temperature Load Limiting
Suction Pressure Cutout- 1 psig 1 Hz VSD Baseplate load limiting helps protect the unit
Suction Pressure Cutout- 2 psig 2 Hz from tripping on the high VSD Baseplate Temp Safety.
Suction Pressure Cutout- 3 psig 3 Hz A system is permitted to load normally as long as the
Suction Pressure Cutout- 4 psig 4 Hz
VSD Baseplate temperature is below the VSD Base-
plate Temperature Cutout minus 8°F. Between the VSD
Suction Pressure Cutout- 5 psig 5 Hz
Baseplate Temperature Cutout minus 8°F and the VSD
Suction Pressure Cutout- 6 psig 6 Hz
Baseplate Temperature Cutout minus 4°F, loading is
Suction Pressure Cutout- 7 psig 7 Hz inhibited, even though increased loading is required.
Suction Pressure Cutout- 8 psig 8 Hz Between the VSD Baseplate Temperature Cutout mi-
Suction Pressure Cutout- 9 psig 9 Hz nus 4°F and the cutout, forced unloading is performed
Suction Pressure Cutout- 10 psig 10 Hz every 2 seconds according to Table 12 on page 208.

JOHNSON CONTROLS 207

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Table 12 - VSD BASEPLATE TEMPERATURE FLASH TANK DRAIN AND FEED VALVE
LOAD LIMITING/UNLOADING CONTROLLER
VSD BASEPLATE TEMPERATURE UN-LOADING
Valve Controller and Control Algorithm
Baseplate Temp. is between Operation
0 Hz
Cutout- 8ºF & Cutout- 4ºF
The Flash Tank Feed and Drain Valve PI Controller(s)
Baseplate Temp. Cutout- 3.6ºF 1 Hz
plays a dual role of supplying drive signals to control
Baseplate Temp. Cutout- 3.2ºF 2 Hz
the opening and closing of both the Flash Tank Feed
Baseplate Temp. Cutout- 2.8ºF 3 Hz
and Drain Valves. These valves control the liquid level
Baseplate Temp. Cutout- 2.4ºF 4 Hz in the flash tank and the suction superheat of the com-
Baseplate Temp. Cutout- 2.0ºF 5 Hz pressor. The Flash Tank Feed and Drain Valve Con-
Baseplate Temp. Cutout- 1.6ºF 6 Hz troller receive analog signals from the Chiller Control
Baseplate Temp. Cutout- 1.2ºF 7 Hz Board to position the Feed and Drain Valves.
Baseplate Temp. Cutout- 0.8ºF 8 Hz
The Chiller Control Board PI (Proportional plus In-
Baseplate Temp. Cutout- 0.4ºF 9 Hz
tegral) control algorithm in the Chiller Control Board
Baseplate Temp. Cutout 10 Hz software determines the open % for the Drain and Feed
valves. A D/A converter on the Chiller Control Board
converts the 0% to 110.0% signal to an output voltage
between 0 VDC and 10.28 VDC and sends it to the
Drain and Feed Controller. This voltage is then con-
verted to a valve position by the Drain and Feed Valve
Controller and a 2 phase (4 wire), signal drives the
Feed Valve open or closed. Power for the Valve Con-
troller comes from a 30 VDC supply from the Chiller
Control Board.

LD10619

Figure 53 - FLASH TANK DRAIN AND FEED VALVE CONTROLLER

208 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

The Feed Valve is a stepper motor valve that controls The Feed and Drain Valves in a system open and be-
the liquid flow from the condenser to assure the liquid gin to control as soon as a compressor starts. When the
level in the flash tank is maintained at a proper level. compressor shuts down, the valves are driven to their
The Level Sensor is a rod inserted into the reservoir closed position.
connected to the side of the flash tank. The sensing rod
has an active range of about 12 in. MOP Setpoint Control for Hot Water Starts
Maximum Operating Pressure control overrides super-
The control algorithm looks at feedback from the Level
heat control of the Drain Valve when the MOP Setpoint
Sensor and compares it to the fixed level setpoint in
is exceeded on hot water starts. The fixed setpoint is
the control algorithm. This control strategy attempts to
68°F Saturated Suction Temp (SST). When this value
keep the level in the flash tank to approx 35% of the
is exceeded, the Drain Valve switches superheat con-
usable portion of the sensing rod. In reality, this is ap-
trol to suction pressure control equal to 68°F SST.
proximately a 50% level in the flash tank. As the level
in the flash tank fluctuates, the control algorithm var- Moderate To High Ambient MOP Setpoint
ies the voltage to the Controller, which in turn sends a Control.
2 phase stepped drive signal to open or close the Feed
Valve as needed. In moderate to high ambients, the suction line may be
warmed by the ambient, contributing to inaccurate suc-
As the flash tank level varies farther from the setpoint, tion superheat measurement at start-up. To avoid this
the gain of the control algorithm increases for faster situation, the MOP control utilizes suction pressure con-
response. In some cases, the Feed Valve will fully open trol at start-up, which overrides superheat control. For
or fully close if the levels become too low or too high. the first minute of run time, the MOP Setpoint is set to:
When properly charged, the condenser subcooling will RCHLT - Superheat Setpoint – 1.0°F
be approx. 5-7°F at design conditions as the Feed Valve Run Time in Seconds
controls refrigerant flow into the flash tank.
After the first minute of operation, the MOP Setpoint is
The Drain Valve is also a stepper motor valve. Like the ramped from the current calculated value to 68°F over
Feed Valve, the controller receives a 0 VDC to 10.28 the next minute. At this point, normal superheat control
VDC signal from the Chiller Control Board. The con- based on the programmed setpoint resumes.
troller then converts the signal to a valve position and
a 2 phase signal drives the Drain valve open or closed. Low Ambient MOP Setpoint Control 7
The Drain Valve, Controller, and Chiller Control Board In low ambient start-ups, suction pressure is erratic and
Algorithm combination functions as an Electronic Ex- pressure differentials across the compressor may be low,
pansion Valve (EEV). The controller receives an ana- resulting in low oil differential faults. The Low Ambi-
log 0 VDC to 10.28 VDC signal sent from the Chiller ent MOP setpoint control assures adequate differential
Control Board, which is based on system suction pres- is developed between discharge and suction to push oil
sure and suction temperature. These operating param- through the oil cooling system and the compressor.
eters are used to compute and control suction superheat For the first 5 minutes of system run time, the MOP
according to the Setpoint programmed into the panel Setpoint is set to the saturated suction temperature
under the PROGRAM key. After computing the su- equal to 15 psig below discharge pressure, which over-
perheat, the signal to the controller is adjusted and the rides superheat control. The control algorithm will not
controller subsequently positions the Drain Valve to allow suction pressure control below the cutout. The
control the superheat. The gain of the control algorithm low limit of the suction pressure is the low suction
is adjusted to aid in correcting for superheat error. pressure cutout. After 5 minutes of system run time,
The Chiller Control Board Algorithm assures the level the MOP Setpoint is set at 68°F and superheat control
in the flash tank does not become too high. The level based on the programmed setpoint resumes.
setpoint for control is 35%. Levels normally run 30 to
Actual MOP Setpoint
40% with the economizer solenoid energized (open).
With the solenoid closed, levels may vary significantly The actual MOP Setpoint used by the controller is
from the 30% to 40% level. If the level exceeds 85% the minimum of three calculations; the fixed MOP
of the full level, the system will shut down on a fault. Setpoint, the moderate to high ambient setpoint, and
the low ambient setpoint.

JOHNSON CONTROLS 209

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Valve Controller LED’s

The Drain and Feed Valve stepper motor controller is
equipped with a pair of LED’s on the left side of the
module and 10 LED’s in the center of the module (Fig-
ure 54 on page 210). These LED’s may be useful dur-
ing troubleshooting.
A pair of LED’s on the left side of the module (Figure
55 on page 210) indicate when the module is pow-
ered. The Power LED should be lit at all times.

Figure 56 - POWER, COMMS AND SYSTEM

OPEN/CLOSE LED'S LD10631

LD10629
A pair of LED’s on the top of the module (Figure 56
Figure 54 - LED LOCATIONS on page 210) indicates when the module is powered
and when the module is communicating with the Chill-
er Control Board. The Power LED should be lit at all
times.
The Open and Close LED’s on each system indicate
when the Feed and Drain valves are being driven open
or closed in an effort to control flash tank level and
suction superheat. These valves will light “momen-
tarily” when the valves are being pulsed. In most cases
other than start-up, they may appear to not light at all.
The valves that are controlled by the outputs associated
with the LED’s are decoded as shown below:
1. Open = System #1 or 3 Feed Valve Open
2. Open = System #1 or 3 Drain Valve Open
3. Open = System #2 or 4 Feed Valve Open

LD10630 4. Open = System #2 or 4 Drain Valve Open

Figure 55 - POWER AND COMMS LED'S
5. Close = System #1 or 3 Feed Valve Close

A column of 10 LED’s runs from top to bottom on the 6. Close = System #1 or 3 Drain Valve Close
right side module (Figure 56 on page 210). 7. Close = System #2 or 4 Feed Valve Close
8. Close = System #2 or 4 Drain Valve Close
On 3 and 4 compressor chillers, a second module will
control systems #3 and #4.

210 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Due to the short duration of the open and close step- In low ambient temperatures less than 40°F, run time
per pulses, LED lighting will be difficult to observe. on the respective compressor is less than 5 minutes,
In rare cases where validation of the controller output and the flash tank level is less than75%, the system
and valve movement needs to be checked, the valves Economizer Solenoid is turned on. Under these con-
can be operated in Service Mode. When operated in ditions, the VSD frequency and the motor temp sen-
Service Mode, visual indication of the LED’s lighting sor readings are not factors that could overload the
will be more obvious. Generally, no audible noise is compressor. Energizing the Economizer Solenoid also
evident as the valves open and close unless the valve helps start a system in low ambients and prevents low
is being run against its stop. It is possible to obtain an suction pressure and low oil differential faults by in-
indication of valve movement by touch, when a valve creasing the load.
is opening or closing.
At ambients above 40°F, once on, the Economizer So-
Manually operating the Feed and Drain lenoid will remain energized until the VSD frequency
Valves in Service Mode can drain or over- drops below 90 Hz. Below 90 Hz, the solenoid will
fill the flash tank. This could cause valve be turned off, regardless of the time remaining on the
movements and levels in the flash tank economizer timers. Under these conditions, the econo-
to act out of the ordinary when a system mizer timers will be set to “0” when the solenoids are
first starts, until the Chiller Control Board de-energized. Below 100 Hz, if the economizer timer
brings the flash tank level and superheat has timed out, the Economizer Solenoids will be turned
under control. This may also be evident in off, the unload timer will be set to 30 seconds, the
the flash tank level and open/close % on economizer timer will be set to 30 seconds if less than
the displays. It may also cause the liquid 30 sec.
line or flash tank sight glasses to empty or
the flash tank sight glass to fill. If a motor temperature sensor exceeds 240°F, the
Economizer Solenoid will de-energize to avoid over-
Careless use of manual control could heating the hot motor. When the economizer solenoid
cause liquid damage to the compressor is de-energized, the compressor unload timer is set to
when it is started. 30 seconds and the economizer solenoid timer is set
to 60 seconds. All other economizer timers for other
ECONOMIZER CONTROL systems are set to 30 seconds, if they are already less
7
The Economizer Solenoid controls a vapor feed to the than 30 seconds.
economizer port on the compressor from the top of the
flash tank. When the valve is open, refrigerant gases The Economizer Solenoid timer prevents the solenoid
off in the flash tank providing additional subcooling to from cycling too often.
the liquid in the tank. The subcooled liquid is then fed Whenever a compressor is to be turned off, all sys-
to the evaporator resulting in additional system capac- tem Economizer Solenoids will be de-energized when
ity and efficiency.
the compressor(s) ramp down. The solenoids on the
In normal operation, the Economizer Solenoid on a compressors that will be ramped back up, if any, will
compressor will be turned on whenever the VSD fre- remain off for 30 seconds before the Chiller Control
quency is more than 120 Hz, the flash tank level is less Board allows the solenoids to re-energize. Once on,
than 75%, motor current less than 80%FLA, motor the economizer solenoid(s) must remain on for 30 sec-
temperature sensors are all less than less than150°F, onds as determined by the economizer timer for each
and the economizer timer is timed out. Whenever the system.
Economizer Solenoid is turned on, the compressor load
timer is set to 35 seconds and economizer timers for
every system are set to 30 seconds, unless they are al-
ready above 30 seconds.

JOHNSON CONTROLS 211

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

FAN FAN FAN FAN FAN FAN

12 10 8 6 4 2 FAN LOCATIONS
SYS
#2
11 FAN UNITS - OMIT FAN 12
VSD/
CONTROL 10 FAN UNITS - OMIT FANS 11 & 12
PANEL 9 FAN UNITS - OMIT FANS 10,11 & 12
SYS 8 FAN UNITS - OMIT FANS 9,10,11 & 12
#1

FAN FAN FAN FAN FAN FAN

11 9 7 5 3 1

LD10632
FAN BAFFLES FAN BAFFLES FAN BAFFLES
Figure 57 - CONDENSER FAN LOCATIONS

CONDENSER FAN CONTROL

Condenser Fan control on each system is based on dis- The fan control algorithm in the Chiller Control Board
charge pressure. There are up to five possible stages of software will not skip steps as fan stages are staged
fan control utilizing 3 outputs per system. Depending up and down. The delay between turning on or off fan
upon the chiller model, there will be 4, 5, or 6 fans stages as discharge pressure rises and falls is 5 seconds.
per system. The fan nearest the discharge liquid head- The controller increments or decrements the fan stage
er will always be the first fan on a system to start. As by one stage based on discharge pressure and fan delay
fan stages increment or decrement, a single fan or pair time.
of fans contained within a pair of fan baffles will be
turned on or off. The diagram above shows the loca- Table 13 on page 212 shows the fan staging and the
tion of the fan baffles. These baffles will not change outputs for each fan stage on 4, 5, and 6 fan systems.
location regardless of the number of fans on a chiller. The microprocessor fan outputs and the fan contactors
will be the same regardless of the number of fans. The
fan wiring will change to permit operation of 4, 5, or
6 fans.

Table 13 - FAN STAGES AND CORRESPONDING OUTPUTS

4 FANS 5 FANS 6 FANS OUTPUT CONTACTORS
Stage 1 Stage 1 Stage 2
(1 Fan ON) (1 Fan ON) (2 Fans ON) Sys 1: 4CR
1
Sys 1 Fan 1 Sys 1 Fan 1 Sys 1 Fans 1 & 11 Sys 2: 7CR
Sys 2 Fan 2 Sys 2 Fan 2 Sys 2 Fans 2 & 12)
Stage 2 Stage 2
(2 Fans ON) (2 Fans ON) Sys 1: 5CR
- 2
Sys 1 Fans 3 & 5 Sys 1 Fans 3 & 5 Sys 2: 8CR
Sys 2 Fans 4 & 6 Sys 2 Fans 4 & 6
Stage 3 Stage 3 Stage 4
(3 Fans ON) (3 Fans ON) (4 Fans ON) Sys 1: 4CR & 5CR
1 and 2
Sys 1 Fans 1, 3, & 5 Sys 1 Fans 1, 3, & 5 Sys 1 Fans 1, 3, 5, & 11 Sys 2: 7CR & 8CR
Sys 2 Fans 2, 4 & 6 Sys 2 Fans 2, 4, & 6 Sys 2 Fans 2, 4, 6, & 12
Stage 4
(4 Fans ON) Sys 1: 5CR & 6CR
- - 2 and 3
Sys 1 Fans 3, 5, 7, & 9 Sys 2: 8CR & 9CR
Sys 2 Fans 4, 6, 8, & 10

Stage 4 Stage 5 Stage 6

(4 Fans ON) (5 Fans ON) (6 Fans ON) Sys 1: 4CR, 5CR, & 6CR
1, 2, and 3
Sys 1 Fans 1, 3, 5, & 7 Sys 1 Fans 1, 3, 5, 7, & 9 Sys 1 Fans 1, 3, 5, 7, 9, & 11 Sys 2: 7CR, 8CR, & 9CR
Sys 2 Fans 2, 4, 6, & 8 Sys 2 Fans 2, 4, 6, 8, & 10 Sys 2 Fans 2, 4, 6, 8, 10, & 12

212 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Fan on and off control points will vary for standard OFF Press. When a fan stage is incremented, the fan
and optional optimized IPLV chillers. Unless controls delay timer is set to 5 seconds, and the Fan ON pres-
dictate all fans running due to high VSD ambient tem- sure is ramped 20 PSIG over the original ON, point
peratures, fans will sequence on when a compressor back to the original value over the next 20 seconds.
runs and discharge pressure rises. During compressor When a fan stage is decremented, the fan delay timer is
ramp up or ramp down when compressors are staged, set to 5 seconds, and the Fan OFF pressure is ramped
the current fan stage will be held. 20 PSIG below the original Fan OFF point, back to the
original value over the next 20 seconds. The ON and
The number of fans is factory programmable under the OFF points will vary as ambient temperature changes.
password protected Unit Setup Mode. Figure 59 on page 213 below shows the fan ON and
OFF points relative to ambient temperature.
Standard IPLV Fan Control
Fan staging ON and OFF points will be determined Optimized IPLV Fan Control

by the ambient temperature. The fan stage will be 155

Discharge Pressure (PSIG)

incremented, unless the 5 second timer between fan 150
145
140
stages is still timing when the discharge pressure rises 135
130
above the Fan ON Press. The fan stage is decremented, 125
120
Fan On Press
Fan Off Press
unless the 5 second timer between fan stages is still 115
110
`

timing when the discharge pressure falls below the Fan 105
100
95
OFF Press. When a fan stage is incremented, the fan 90

delay timer is set to 5 seconds, and the Fan ON pres- 75 85 95 105 115 125
Ambient Air Temp (°F)
sure is ramped 20 psig over the original ON point back
to the original value over the next 20 seconds. When LD10634

a fan stage is decremented, the fan delay timer is set Figure 59 - HIGH IPLV FAN CONTROL
to 5 seconds, and the Fan OFF pressure is ramped 20
PSIG below the original Fan OFF point, back to the High VSD Cabinet Ambient Temperature Fan
original value over the next 20 seconds. The ON and Operation
OFF points will vary as ambient temperature changes. All condenser fans on all systems will run when the
Figure 58 on page 213 below shows the fan ON and chiller is off and enabled to run, if the VSD internal
OFF points relative to ambient temperature. ambient temperature is higher than 5°F below the VSD 7
Cabinet Ambient Temperature Cutout of 158°F (158°F
Standard IPLV Fan Control
minus 5°F equals 153°F). When the fans turn on in this
190 situation, the fan outputs will cycle one at a time with
Discharge Pressure (PSIG)

180
170
a 100 ms delay between fan starts. When the VSD in-
160 ternal ambient falls below the “Restart Temperature”
150
140
Fan On Press (158°F Cutout minus 10°F equals 148°F), the fans will
Fan Off Press
130
120
`
all be turned off without a delay.
110
100
90 VSD TEMPERATURE CONTROL, OPERATION
75 85 95 105 115 125 OF THE COOLANT PUMP, AND VSD CABINET
Ambient Air Temp (°F)
COOLING FANS
LD10633
The Coolant pump and VSD Cabinet Cooling Fans will
Figure 58 - STANDARD IPLV FAN CONTROL
run to cool the VSD whenever any of the following
conditions are met:
Optimized IPLV Fan Control • VSD Comp IGBT Baseplate Temperature on a 2
Fan staging ON and OFF points will be determined or 4 compressor unit is greater than 10°F (5.6°C)
by the ambient temperature. The fan stage will be below the cutout (Cutout 218°F [103.3°C] mi-
incremented, unless the 5 second timer between fan nus 10°F [5.6°C] equals 208°F [97.8°C]). When
stages is still timing when the discharge pressure rises the VSD internal ambient falls below the restart
above the Fan ON Press. The fan stage is decremented, temperature (Cutout 218°F [103.3°C] minus 15°F
unless the 5 second timer between fan stages is still [8.3°C] equals 203°F [95°C]), the fans and pump
timing when the discharge pressure falls below the Fan will turned off without a time delay.

JOHNSON CONTROLS 213

FORM 201.23-NM2
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ISSUE DATE: 09/30/2019

• VSD Comp IGBT Baseplate Temperature on a Remote ISN Setpoint Control

3 compressor unit is greater than 10°F (5.6°C) The Remote Leaving Chilled Liquid Setpoint Cooling
below the cutout (cutout 232°F [111.1°C] minus Setpoint can be set via the ISN comms. The control
10°F (5.6°C) equals 222°F [105.6°C]). When the panel will only accept a remote setpoint from the ISN
VSD internal ambient falls below the restart tem- if the control panel is in Remote Control Mode (un-
perature (cutout minus 15°F [8.3°C] equals 217°F der the OPTIONS key). If the control panel is in Local
[102.8°C]), the fans and pump will be turned off Control Mode, the ISN setpoint will be ignored and the
without a time delay. Remote Cooling Setpoint is set to the Local Cooling
• Pre-charge Enable 1 from the Chiller Logic Board Setpoint. The minimum and maximum allowable reset
is ON. values will be the same as the minimum and maximum
allowable programmable values for the Local Cooling
• Pre-charge Enable 2 from the Chiller Logic Board Setpoint. If these values are exceeded by the ISN, the
is ON. minimum or maximum value will be used.
• VSD Internal Ambient Temp more than 158°F
Contact a local YORK ISN Representative for details
(70.0°C) (Cutout) – 10°F (5.6°C) equals 148°F
on ISN controls and capabilities.
(64.4°C). When the Internal Ambient Temp falls
to less than 158°F (70.0°C) (Cutout) minus 15°F Remote Temperature Reset
(8.3°C) equals 143°F (61.7°C) the VSD cooling
fans and glycol pump will turn off. The Remote Leaving Chilled Liquid Cooling Setpoint
can be reset via the Remote Temperature Reset analog
• Condenser Fans (as needed) and VSD coolant input. A zero signal input (0% input) equates to a 0°F
pump/fans will run whenever a compressor is offset to the Local Cooling Setpoint. A full scale sig-
running. Under these conditions, the condenser nal input (100% input) equates to a "positive" offset to
fans will run to control discharge pressure and the Local Cooling setpoint equal to the programmable
the VSD coolant pump/fans will run to cool the Maximum Remote Temp Reset. The offset is linear and
IGBT baseplate and internal cabinet. Additional may be adjusted anywhere between the 0% and 100%
condenser fans will be brought on, if the IGBT points. The maximum setpoint allowed is the maxi-
baseplate temperatures or internal cabinet ambi- mum programmable Local Cooling Setpoint and will
ent rises to 5°F (2.8°C) below the cutout. Con- be capped at this value, if the calculated setpoint with
denser fans will turn off, if the compressor turns temperature offset exceeds this value.
off provided VSD cooling is not required. The
glycol pump and cabinet fan may continue to run, This input may be used either in Local or Remote Con-
if VSD cooling is required. trol Mode. This feature will only operate if enabled
under the UNIT SETUP and the OPTIONS key. The
• Glycol Pump and Cabinet Cooling Fans will also input will be ignored if the Remote Temp Reset is dis-
run in the Service Mode if the Fan/Pump Run Bit abled under the OPTIONS key or if there are valid ISN
is Set. comms while in Remote Control Mode. Once a change
to the input is registered, a timer is set to the value of
REMOTE TEMPERATURE RESET CONTROL
the Remote Inputs Service Time as programmable un-
Temperature Reset Control der the Unit Setup Mode at the factory for the default
value of 15 minutes. The low limit is 5 minutes and
Temperature Reset Control is used to reset the ac-
the high limit is 60 minutes. The Remote input will
tual LCHLT (Leaving Chilled Liquid Temperature)
be ignored until this timer expires. The timer assures
setpoint used in capacity control. There are several
that rapid changes in a remote reset signal don’t result
ways to change the LCHLT setpoint. The first is by
in poor temperature control or excessive compressor
re-programming the Local Cooling Setpoint under the
cycling. In most instances, this timer will not need to
SETPOINTS key. This is the value the unit will control
be changed, since reset more often than 15 minutes
the LCHLT to if neither of the other methods is active.
will create problems with chilled liquid temperature
Remote Temperature Limit Reset is only possible if the control. Factory Service should be contacted if a timer
option is enabled by both the OPTIONS key selection change is required.
and in the factory programmable password protected
Unit Setup Mode.

214 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Control Board jumper JP4 must be positioned correctly 4 mA through 20 mA Reset Input
to receive either a voltage (0 VDC through 10 VDC or A 0 mA to 4 mA signal produces a 0°F reset. A 20 mA
2 VDC through 10 VDC) or current (0 mA through 20 signal produces the maximum remote temp reset (pro-
mA or 4 mA through 20 mA) signal. Place the jumper grammable under the SETPOINTS key). The setpoint
in the “V” position for a voltage signal or mA for a cur- reset is ramped linearly between these limits as the in-
rent signal (See Figure 27 on page 166 and Figure 28 put varies between 4 mA and 20 mA. In order for this
on page 167). The software must be configured under input to work properly, the Remote Temperature Reset
the OPTIONS key for the specific type of input signal must be programmed for 4 mA through 20 mA input
to be used. (OPTIONS key) and Chiller Control Board jumper JP4
The maximum temperature reset is achieved at either placed in the “mA” position.
10 VDC or 20 mA. Sending the minimum signal (0
Local Current Limit Control
VDC, 2 VDC, 0 mA, or 4 mA based on the OPTIONS
key setting) causes the setpoint to revert back to its lo- Local Current Limit Control is used to set the ac-
cal programmed value. If the setpoint reset causes the tual Current Limit Setpoint. This is accomplished by
setpoint to go over the maximum programmable value, changing the Local Current Limit Setpoint under the
it will be set to the maximum programmable setpoint. PROGRAM key. This is the value at which the unit
will begin to current limit and override capacity control
0 VDC through 10 VDC Reset Input if remote reset is not actively overriding this control. If
A 0 VDC signal produces a 0°F reset. A 10 VDC signal any other current limit methods are active, the lowest
produces the maximum remote temp reset (program- value will be used.
mable under the SETPOINTS key). The setpoint reset Keep in mind that limiting current may interfere with
is ramped linearly between these limits as the input capacity control, pulling down chilled liquid tempera-
varies between 0 VDC and 10 VDC. In order for this tures on hot water starts, and maintaining chilled liquid
input to work properly, the Remote Temperature Reset setpoints.
must be programmed for 0 VDC through 10 VDC in-
put (OPTIONS key) and Chiller Control Board jumper Pulldown Current Limit Setpoint
JP4 placed in the “V” position.
The Pulldown Current Limit Setpoint can be set under
2 VDC through 10 VDC Reset Input the PROGRAM key. This current limit setpoint is only 7
active on start-up for the time defined by the Pulldown
A 0 VDC to 2 VDC signal produces a 0°F reset. A 10 Current Limit Time under the PROGRAM key. After
VDC signal produces the maximum remote temp re- the run time has exceeded this time, the Pulldown Cur-
set (programmable under the SETPOINTS key). The rent Limit Setpoint is ignored.
setpoint reset is ramped linearly between these limits
as the input varies between 2 VDC and 10 VDC. In This control is useful in limiting current pulldown de-
order for this input to work properly, the Remote Tem- mand during peak usage periods where electric costs
perature Reset must be programmed for 2 through 10 are highest.
VDC input (OPTIONS key) and Chiller Control Board
jumper JP4 placed in the “V” position. Keep in mind that limiting current may interfere with
capacity control, pulling down chilled liquid tempera-
0 mA through 20 mA Reset Input tures on hot water starts, and maintaining chilled liquid
setpoints.
A 0 mA signal produces a 0°F reset. A 20 mA signal
produces the maximum remote temp reset (program- REMOTE CURRENT LIMIT RESET CONTROL
mable under the SETPOINTS key). The setpoint reset
is ramped linearly between these limits as the input Remote Current Limit Reset is used to reset the actu-
varies between 0 mA and 20 mA. In order for this inal current limit setpoint used in current limit control.
put to work properly, the Remote Temperature Reset There are several ways to change the current limit
must be programmed for 0 mA through 20 mA input setpoint. The first is by reprogramming the Local Cur-
(OPTIONS key) and Chiller Control Board jumper JP4 rent Limit Setpoint under the PROGRAM key. This is
placed in the “mA” position. the value the unit will control the current limit to if
neither of the other methods is active.

JOHNSON CONTROLS 215

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

Remote Current Limit Reset is only possible if the op- VDC to 10 VDC) or current (0 mA to 20 mA or 4 mA
tion is enabled by both the OPTIONS key selection and to 20 mA) signal. Place the jumper in the “V” position
in the factory programmable password protected Unit for a voltage signal or mA for a current signal (See Fig-
Setup Mode. ure 27 on page 166 and Figure 28 on page 167). The
software must be configured under the OPTIONS key
Remote ISN Current Limit Setpoint for the type of input signal to be used.
The ISN Current Limit Setpoint can be set via the ISN
The minimum current limit setpoint is achieved at ei-
comms. The control panel will only accept a Current
ther 10 VDC or 20 mA. Sending the minimum signal
Limit Setpoint from the ISN if the control panel is in
(0 VDC, 2 VDC, 0 mA, or 4 mA based on the OP-
Remote Control Mode (under the OPTIONS key). If
TIONS key setting) causes the current limit to revert
the control panel is in Local Control Mode, the ISN
back to its maximum value.
setpoint will be ignored. The minimum and maximum
allowable values will be the same as the minimum and 0 VDC through Reset Input
maximum allowable reset values for the Current Limit
Setpoint under the PROGRAM key. If these values are A 0 VDC signal sets the current limit to the maximum
exceeded, the minimum or maximum value will be value. A 10 VDC signal sets the current limit to the
used. minimum value. The current limit is ramped linearly
between these limits as the input varies between 0
Contact a local Johnson Controls ISN Representative VDC and 10 VDC. In order for this input to work prop-
for details on ISN controls and capabilities. erly, the Remote Current Limit must be programmed
for 0 VDC through 10 VDC input (OPTIONS key) and
Remote Current Limit Reset Chiller Control Board jumper JP5 placed in the “V”
The Current Limit Setpoint can be set or reset via the position.
Remote Current Limit analog input. A zero signal in-
put (0% input) equates to the maximum current limit 2 VDC through 10 VDC Reset Input
setpoint as defined under the PROGRAM key Cur- A 0 VDC to 2 VDC signal sets the current limit to the
rent Limit Setpoint. A full scale signal input (100% maximum value. A 10 VDC signal sets the current limit
input) equates to the minimum current limit setpoint to the minimum value. The current limit is ramped lin-
as defined under the PROGRAM key Current Limit early between these limits as the input varies between 2
Setpoint. The current limit value is linear and may be VDC and 10 VDC. In order for this input to work prop-
adjusted anywhere between the maximum and mini- erly, the Remote Current Limit must be programmed
mum points of 0% (no offset) and 100% (max. current for 2 VDC through 10 VDC input (OPTIONS key) and
limiting). Chiller Control Board jumper JP5 placed in the “V”
position.
This input may be used either in Local or Remote Con-
trol Mode. This input will be ignored if the Remote 0 mA through 20 mA Reset Input
Current Limit is disabled under the OPTIONS key.
A 0 mA signal sets the current limit to the maximum
Once a change to the input is registered, a timer is set
value. A 20 mA signal sets the current limit to the mini-
to the value of the Remote Inputs Service Time as pro-
mum value. The current limit is ramped linearly be-
grammable under the Unit Setup Mode at the factory
tween these limits as the input varies between 0 mA
for the default value of 15 minutes. The low limit is 5
and 20 mA. In order for this input to work properly, the
minutes and the high limit is 60 minutes. The Remote
Remote Current Limit must be programmed for 0 mA
input will be ignored until this timer expires. The tim-
through 20 mA input (OPTIONS key) and Chiller Con-
er assures that rapid changes in a remote reset signal
trol Board jumper JP5 placed in the “mA” position.
don’t result in poor temperature control or excessive
compressor cycling. In most instances, this timer will 4 mA through 20 mA Reset Input
not need to be changed, since reset more often than 15
minutes will create problems with chilled liquid tem- A 4 mA signal sets the current limit to the maximum
perature control. Factory Service should be contacted value. A 20 mA signal sets the current limit to the mini-
if a timer change is required. mum value. The current limit is ramped linearly be-
tween these limits as the input varies between 4 mA
Control board jumper JP5 must be positioned correctly and 20 mA. In order for this input to work properly, the
to receive either a voltage (0 VDC to 10 VDC or 2 Remote Current Limit must be programmed for 4 mA

216 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

through 20 mA input (OPTIONS key) and Chiller Con- Remote Sound Limit
trol Board jumper JP5 placed in the “mA” position. The Sound Limit Setpoint can be set via the Remote
Sound Limit analog input. A zero signal input (0% input)
SOUND LIMIT CONTROL
equates to the minimum sound limit setpoint as defined
(Local and Remote Reset Control) under the PROGRAM key Sound Limit Setpoint. A full
scale signal input (100% input) equates to the maximum
Sound Limiting and Local Sound Limit sound limit setpoint as defined under the PROGRAM
Setpoint key Sound Limit Setpoint. The input is linear and may
Sound limit control to reduce overall chiller noise lev- be adjusted between 0% (minimum sound limiting) and
els at specified times of the day is accomplished by set- 100% (maximum sound limiting) points.
ting a Sound Limit Setpoint. There are several ways to
This input may be used either in Local or Remote Con-
set the Sound Limit Setpoint. The first is by changing
trol Mode. The input will be ignored if the Remote
the Local Sound Limit Setpoint under the PROGRAM
Sound Limit is disabled under the OPTIONS key. Once
key. This is the value the unit will use for sound limit-
a change to the input is registered, a timer is set to the
ing, if neither of the other methods is active. If any
value of the Remote Inputs Service Time as program-
other sound limit methods are active, the lowest value
mable under the Unit Setup Mode at the factory for the
will be used. A sound limit of 0% will allow the unit to
default value of 15 minutes. The low limit is 5 minutes
run up to the unit’s maximum frequency. A sound limit
and the high limit is 60 minutes. The Remote input will
of 100% will not allow the unit to run above the mini-
be ignored until this timer expires. The timer assures
mum frequency. All other sound limit values are linear
that rapid changes in a remote reset signal don’t result
between these 2 points.
in poor temperature control and excessive compressor
A sound limit schedule must be programmed under the cycling. In most instances, this timer will not need to
SCHEDULE key when sound limiting is utilized. The be changed, since reset more often than 15 minutes
schedule defines the time period that sound limiting will create problems with chilled liquid temperature
will be active. control. Factory Service should be contacted if a timer
change is required.
Sound Limiting is only possible if the option is enabled
by both the OPTIONS key selection and the factory Control board jumper JP6 must be positioned correctly
programmable password protected Unit Setup Mode. to receive either a voltage (0 VDC to10 VDC or 2 VDC 7
to 10 VDC) or current (0 mA to 20 mA or 4 mA to 20
If Sound Limiting is disabled under the
mA) signal. Place the jumper in the “V” position for a
Unit Setup Mode, nothing relating to
voltage signal or mA for a current signal (See Figure
Sound Limiting will show up on any dis-
27 on page 166 and Figure 28 on page 167). The
play screen or printout.
software must be configured under the OPTIONS key
for the type of input signal to be used.

ISN Sound Limit Setpoint The maximum sound limit is achieved at either 10
VDC or 20 mA. Sending the minimum signal (0 VDC,
The ISN Sound Limit Setpoint can be set via the ISN 2 VDC, 0 mA, or 4 mA based on the OPTIONS key
II comms. The control panel will only accept a Sound setting) causes the sound limit to be set to its minimum
Limit Setpoint from the ISN if the control panel is in (no limiting) value.
Remote Control Mode. If the control panel is in Local
Control Mode, the ISN setpoint will be ignored. The 0 VDC through 10 VDC Reset Input
minimum and maximum allowable values will be the
A 0 VDC signal produces a 0% sound limit (no change
same as the minimum and maximum allowable values
to max VSD freq). A 10 VDC signal produces a 100%
for the Sound Limit Setpoint under the PROGRAM
sound limit (max VSD freq equals min VSD freq). The
key. If these values are exceeded, the minimum or
sound limit is ramped linearly between these limits as
maximum value will be used.
the input varies between 0 VDC and 10 VDC. In order
Contact a local Johnson Controls ISN Representative for this input to work properly, the Remote Sound Lim-
for details on ISN controls and capabilities. it must be programmed for 0 VDC through 10 VDC in-
put (OPTIONS key) and Chiller Control Board jumper
JP6 placed in the “V” position.

JOHNSON CONTROLS 217

FORM 201.23-NM2
SECTION 7 - OPERATION
ISSUE DATE: 09/30/2019

2 VDC through 10 VDC Reset Input

A 0 VDC through 2 VDC signal produces a 0% sound limits as the input varies between 0 mA and 20 mA.
limit (no change to max VSD freq). A 10 VDC signal In order for this input to work properly, the Remote
produces a 100% sound limit (max VSD freq equals Sound Limit must be programmed for 0 mA through 20
min VSD freq). The sound limit reset is ramped linearly mA input (OPTIONS key) and Chiller Control Board
between these limits as the input varies between 2VDC jumper JP6 placed in the “mA” position.
and 10 VDC. In order for this input to work properly,
the Remote Sound Limit must be programmed for 2 4 mA through 20 mA Reset Input
VDC through 10 VDC input (OPTIONS key) and A 0 mA through 4 mA signal produces a 0% sound lim-
Chiller Control Board jumper JP6 placed in the “V” it (no change to max VSD freq). A 20 mA signal pro-
position. duces a100% sound limit (max VSD freq equals min
VSD freq). The sound limit reset is ramped linearly
0 mA through 20 mA Reset Input between these limits as the input varies between 4mA
A 0 mA signal produces a 0% sound limit (no change and 20 mA. In order for this input to work properly, the
to max VSD freq). A 20 mA signal produces a 100% Remote Sound Limit must be programmed for 4 mA
sound limit (max VSD freq equals min VSD freq). through 20 mA input (OPTIONS key) and Chiller Con-
The sound limit reset is ramped linearly between these trol Board jumper JP6 placed in the “mA” position.

218 JOHNSON CONTROLS

FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 8 - MICROPANEL

VSD OPERATION AND CONTROLS

VSD Logic Board The rate of change of the frequency will also be con-
The VSD Logic Board communications with the Chill- trolled by the VSD Logic Board.
er Control Board via comms and controls the VSD The rate of change of the output frequency at start-up,
functions. It converts the frequency and run commands during acceleration is 10 Hz/s between 0 Hz and 50
from the Chiller Control Board into the necessary volt- Hz and 30.4 Hz/s above 50 Hz. The maximum rate of
age and frequency commands to operate the inverter change of the output frequency during deceleration be-
section. It also controls the converter section of the tween 200 Hz and 100 Hz is 30.4 Hz/s, and 100 Hz and
drive (AC Line to DC Bus conversion) by controlling 0 Hz is 10 Hz/s.
the pre-charge function.
The VSD Logic Board and its PWM generator will re-
The VSD Logic Board contains a 2nd microprocessor ceive operating frequency and voltage commands from
(motor controller) that generates the PWM signals that the Chiller Control Board based on the load.
control the IGBT outputs in the inverter section of the
VSD. When a frequency (speed) change is requested from
the Chiller Control Board, the chiller microprocessor
An FPGA handles the hardware safeties that can shut will send the change to the VSD Logic Board and the
down the VSD much faster than the software safeties. VSD Logic Board will acknowledge it accepted the
The VSD Logic Board handles all of the VSD related change. Loading and unloading will take place at the
safeties, which includes motor current, BUS voltage, rate of 0.1 Hz to 1 Hz every 2 seconds.
and other safeties.
PWM Generator Type and Carrier Frequency
The VSD Logic Board reports shutdown information
back to the Chiller Control Board via the RS-485 com- The PWM generator is responsible for providing asym-
munication link. metrical uniform sampled PWM waveforms to the
compressor motor at a carrier frequency of 3125 Hz by
2, 3 and 4 compressor chillers all use the same soft- turning on an off the inverter IGBT’s. The waveform
ware. The microprocessor determines whether the generated is equivalent to a specific V/F ratio at a given
chiller is a 2, 3 or 4 compressor chiller by electroni- speed based on the voltage and frequency commands
cally checking for a factory-installed jumper in the sys- from the Chiller Control Board. The PWM Generator
tem wiring harness. The microprocessor checks for the receives operating frequency and voltage commands
jumper located in the J1 plug wiring harness at power- from the VSD Logic Board control processor. 8
up. If no jumper or more than one jumper is sensed, the
microprocessor will inhibit start-up. Details regarding Short Circuit Protection Minimum Output
the location of the jumper are provided in Chiller Con- Pulse Width and Interlock Delay
figuration Jumpers on page 195. The PWM generator is programmed to drop all “on”
pulses in less than 10 microseconds (and all matching
VSD Start/run Initiation
“off” pulses in the mirrored waveform) to permit time
Following a successful precharge of the DC Bus and for the IGBT gate drivers to detect and self extinguish
a run command from the Chiller Control Board, the an inverter short circuit condition.
VSD Logic Board microprocessor will determine the
motor output voltage (% modulation) and the output Modulating Frequency
frequency required based on the operating frequency The modulating frequency range will range from 0 Hz
command from the Chiller Control Board. This infor- to 200 Hz. The modulating frequency waveform con-
mation will then be sent to the PWM generator located sists of a sinusoidal waveform summed together with
on the VSD Logic Board. On start-up, the output fre- 16.66% of the third harmonic component of the sinu-
quency from the VSD to the motor(s) will be increased soidal waveform. Utilization of this waveform as the
from 0 Hz to the operating frequency commanded by modulating waveform will permit the drive to generate
the Chiller Control Board. a fundamental line to line voltage equal to the DC Bus
voltage divided by 1.414.

JOHNSON CONTROLS 219

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Maximum VSD Frequency VSD Cooling and Cooling Loop

The maximum VSD frequency will vary for each chill- The VSD generates heat in the IGBT power modules
er model. The microprocessor board determines the and the SCR/Diode assemblies, which must be re-
frequency according to jumpers' factory installed in moved. The heat not only heats the modules but also
the wiring on the J7 plug of the microprocessor board. the Micro/VSD cabinet.
The location of these jumpers' is interpreted as a binary
value, which presently allows 7 speed selections plus a The VSD is cooled by a glycol loop and circulating
default. The maximum frequency may vary from 178 pump. The glycol cooling loop feeds a liquid cooled
Hz to 200 Hz. If the J7 plug is not installed, the speed heatsink called a chillplate that cools the IGBT’s and
will default to 178 Hz. Details on the location of the SCR/Diode modules. The coolant is pumped by a cir-
jumpers' and the associated maximum speed are pro- culator pump through the heatsink where it absorbs
vided in Chiller Configuration Jumpers on page 195. heat in several passes of tubes on the lower rows of
the inside condenser coils where the condenser fans re-
VSD % Modulation move the heat picked up from the modules. The cool-
ant is then pumped back to the modules. The glycol
The voltage and frequency commands issued by the
loop also provides cooling for the Micro/VSD cabinet.
VSD Logic Board microprocessor are determined
The baseplates of the power components are mounted
by the frequency command from the Chiller Control
to the glycol cooled heatsinks in the cooling loop. The
Board. The VSD output is a PWM signal (Figure 4 on
cooling loop also circulates the glycol through a cool-
page 21), which has effects on the motor comparable
ing coil in the cabinet. A fan blows air from the cabinet
to an AC voltage sinusoidal waveform. To change the
across the cooling coil to cool the electronics in the
speed of an AC motor, the frequency of the AC volt-
cabinet.
age must be changed. Whenever frequency is changed,
the voltage is changed in a linear ratio. Maintaining a Never run the glycol pump without cool-
relatively constant V/F ratio as speed changes assures ant! Running the glycol pump without
motor losses and overheating do not occur. coolant may damage the pump seals

The output voltage of the VSD is not a sinusoidal Always fill the system with approved cool-
waveform. Instead, the PWM generator provides an ant to avoid damage to the pump seals and
output that simulates a true AC waveform by repeti- other components.
tively turning on and off the voltage to the motor to Heat transfer characteristics of the cool-
create an average voltage that is equal to a lower AC ant are very critical. Substituting coolant
voltage at lower frequencies and a higher voltage at or adding water will result in cooling loop
higher frequencies. The PWM generator also changes performance loss and chiller shutdown.
the % modulation of the waveform to simulate the fre-
quency change to maintain the V/F ratio with motor The glycol coolant level in the VSD cooling system
speed changes. should be maintained between 9 and 15 inches (23 and
38 cm) from the top of the fill tube. This check should
The PMW generator is programmed to essentially op-
be performed prior to running the pump. The pump can
erate a linear volts/Hz ratio over the 0 Hz to 200 Hz
be test run by placing the chiller in Service Mode. It
frequency range. The complex control algorithm modi-
is advisable to fill the tube to the required level be-
fies the voltage command to boost the voltage of the
fore starting the glycol pump because it may empty
V/F ratio at lower speeds to provide additional torque.
when the pump starts. The level should be topped off
The 100% modulation operating point occurs at a fun- as needed while running. Be sure to re-install the cap
damental frequency of 189.6 Hz. As the output fre- before stopping the glycol pump to avoid overflowing
quency increases above 189.6 Hz, the drive operates in the fill tube when the glycol pump is turned off.
an over-modulated mode. For example, at 200 Hz fun-
Glycol coolant has a defined operating life. System
damental modulating frequency the PWM waveform is
coolant should be changed 5 years from date of ship-
over-modulated by approximately 18%. This will yield
ment of the equipment. Mixing other coolants or water
a fundamental output line to line voltage applied to the
with the special glycol will reduce the life of the cool-
motor terminals at maximum output frequency that is
ant, and cause VSD overheating and damage.
equal to the input line to line voltage applied to the
drive (provided the DC Bus current remains continu-
ous).
220 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

VSD GLYCOL • Pre-charge Enable 2 from the Chiller Logic Board

PUMP is OFF.
• VSD Internal Ambient Temp less than Cutout mi-
nus 15°F.
• No compressors are running.
• Service Mode Fan/Pump is disabled.
In some cases, the condenser fans may be
turned on by the microprocessor, when
no compressors are running, to keep the
power components and Control/VSD
Cabinet from overheating.

IGBT Module Baseplate Temperature Sensing

Each IGBT module has an internal 5Kohm thermistor
LD10635 built in to measure the temperature of the module. Up
to 4 thermistors are connected to the VSD Logic Board
The VSD fan and glycol pump will run if any of the (one per compressor). The highest module temperature
following conditions listed below are true, provided of compressors 1 and 3 are sent to the logic board along
the VSD has been powered up for less than 30 seconds with the highest module temperature of compressors
and the pump has not run in the last 30 seconds. The 30 2 and 4. If the temperature exceeds the software trip
second limitations prevent pump motor overheating. point, the unit will shut down on a safety. See “High
Baseplate Temperature Fault” (Page 241) for details.
• 2 and 4 Compressor Baseplate temp is more than
Cutout (218°F) minus 10°F.
• 3 Compressor IGBT Baseplate temp is more than
Cutout (232°F) minus 10°F.
• Pre-charge Enable 1 from the Chiller Logic Board LM 34
is ON. SENSOR

• Pre-charge Enable 2 from the Chiller Logic Board

is ON.
8
• VSD Internal Ambient Temp more than Cutout
minus 10°F.
• Any compressor is running.
• Service Mode Fan/Pump Run is enabled.
The VSD fan/glycol pump will turn off when ALL of
the following conditions are true: LD10615

• Compressor 1/3 IGBT Baseplate temp is less than ORIGINAL - OBSOLETE P/N 031-02477-000
Cutout minus 15°F.
• Compressor 2/4 IGBT Baseplate temp is less than
Cutout minus 15°F.
• Pre-charge Enable 1 from the Chiller Logic Board
is OFF.

JOHNSON CONTROLS 221

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Following successful completion of the pre-charge

interval, the SCR’s on the AC to DC semi-converter
(SCR/Diode Modules) will be gated fully on by the
SCR Trigger Board and the DC Bus will be brought up
to its full potential. After pre-charge has been success-
fully completed, the SCR’s will stay fully on until the
Chiller Control Board turns off the Pre-Charge Enable
via comms.
There will be a Unit Pre-charge Enable for 2 and 3
compressor units and separate System Pre-charge En-
ables for 4 compressor units.
LM 34
SENSOR The pre-charge will only take place when all of the fol-
lowing conditions are true, otherwise it is disabled:
LD13123 • Daily Schedule is ON.
NEW BOARD - P/N 031-02507-XXX • UNIT switch is ON.
• System Switch(es) are ON.
VSD Internal Ambient Temperature Sensing
• Run Permissive(s) are Enabled.
A National LM34 temperature sensor located on the
VSD Logic Board is used to measure the internal am- • Flow Switch indicates flow.
bient temperature of the Control Panel/VSD enclosure.
• LCHLT more than Setpoint High Limit.
It has an output voltage that is linearly proportional to
the temperature in degrees Fahrenheit. If the tempera- • Unit not faulted / locked out.
ture exceeds the software trip point, the unit will shut
down on a safety. See “High VSD Ambient Tempera- Run Mode / Unit Restart
ture Fault” (Page 241) for details. In order to initiate a system run, two conditions must
be met. At least 1 of the 2 systems run signals from the
Pre-charge control panel must be present and at least 1 of the 4
When cooling is required (LCWT is more than SPHL), possible Compressor RUN bits must be set in the serial
leaving chilled liquid temp is greater than the setpoint communications link between the VSD Logic Board
high limit), the chiller Control Board will send a and the Chiller Control Board. Following successful
Pre-Charge Enable (2 enables on a 4 comp unit) via completion of pre-charge and receipt of the system run
comms to the VSD Logic Board. The VSD’s DC Bus signals, the motor output voltage (% modulation) and
voltage(s) across the Bus Filter Capacitors will slowly output frequency commands will be determined by the
be increased to the proper level (more than 500 VDC) VSD microprocessor located on the VSD Logic Board.
through firing of the SCR Trigger Board(s) and the as- These two parameters will be sent to the PWM gen-
sociated pre-charge enable control signal(s). The pre- erator located on the VSD Logic Board for waveform
charge time interval is fixed at 20 seconds. The pur- processing at a rate of once every 10 ms.
pose of the precharge is to limit current when charging
The voltage and frequency commands issued by the
an uncharged capacitor bank. When uncharged, the
VSD microprocessor are determined by the operating
capacitor bank looks like an electrical short. The bus is
frequency command received on the communications
brought up slowly by only turning on the SCR’s during
link from the Chiller Control Board and by the pres-
the trailing half of the + and – portion of the incom-
ent operating frequency of the drive. Upon receipt of
ing AC sine wave. Following is the status message dis-
a legitimate run command communication, the VSD’s
played while the precharge is taking place.
output frequency will be increased from 0 Hz to the
SYS X VSD DC BUS PRECHARGE
operating frequency command from the communica-
tions link.

222 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

DC Bus Voltage Sensing and Scaling VSD Transmitted Operating Parameters

Full DC Bus voltage and ½ DC Bus voltages are sensed VSD operating parameters will be transmitted to the
for up to 2 DC Buses. 2 and 3 compressor chillers share Chiller Control Board over the RS-485 communica-
a common DC Bus, while 4 compressor chillers utilize tions link between the 2 boards. These values will be
2 DC Buses (1/3 and 2/4). The DC Bus is wired to the displayed on the control panel display. The data and
DC Bus Isolation Board, the voltage is divided down display format are outlined in the Table 14 on page
through a resistance voltage divider, and the reduced 223.
voltage is fed to the VSD Logic Board for safety moni-
toring. VSD SAFETIES (FAULTS)
VSD operating conditions are monitored by both soft-
Current Sensing and Scaling
ware algorithms and hardware circuitry. Both types ex-
Individual current transformers on each leg sense three ist as a result of the need for both extremely fast protec-
phases of output current on each compressor. These tion requirements such as a short circuit condition or a
signals are buffered, divided by 2, and filtered by an slow reacting trip such as a slow rising overload condi-
RMS to DC converter. The highest of the currents in tion. To eliminate nuisance unit trips, the sensor inputs
the three phases of each compressor leaving the RMS for the VSD’s operating parameters are averaged four
converters is then sent to an A-D converter scaled, times before “Software” generated unit/system fault
monitored by the VSD Logic Board overload and high trips from the VSD Logic Board are initiated. These
current protection circuitry, and sent to the Chiller faults cause single compressor or total unit controlled
Control Board for display as the compressor current. “ramped” shutdown. Other parameters that are not fed
to the VSD Logic Board microprocessor are protected
In order to set the motor overload level (determined by
by “Hardware” generated fault trips. Hardware trips
the setting of the OVERLOAD ADJUST potentiom-
involve electronic circuitry that measures voltages or
eter on the VSD Logic Board), the voltage level on the
currents and activate level sensitive comparators con-
wipers of the four OVERLOAD ADJUST potentiom-
nected to programmable gate arrays on the VSD Logic
eters is continuously sensed by the VSD Logic Board
Board FPGA (Field Programmable Gate Array). These
for current protection and sent to the Chiller Control
safeties operate extremely fast and provide “immedi-
Board for both display purposes and for current limit-
ate” shutdown, because they are not dependent upon
ing control. This parameter is the 105% FLA value.
software program loops that operate in seconds or frac-
tions of a second. Outputs from the gate arrays provide
a digital signal to indicate whether a safety threshold
has been reached.
Table 14 - VSD OPERATING DISPLAY PARAMETERS 8
DISPLAY
DATA
FORMAT
Highest Phase of Compressor Motor Current in Amperes RMS (per Compressor) XXX Amps
VSD Output Frequency XXX.X Hz
Motor Overload Setting (105% FLA potentiometer setting) in amperes RMS (per Compressor) XXX Amps
DC Bus Voltage in DC Volts (maximum of 2) XXX Volts
VSD Internal Ambient Temperature XXX.XºF (or ºC)
IBGT Power Assembly Power Module Highest Baseplate Temperature (maximum of 2) XXX.XºF (or ºC)
Pre-Charge Enable Signal (maximum of 2) On or OFF
VSD cooling Fan/Pump On or OFF
Compressor Run Status (maximum of 4) On or OFF

Immediate Fault shutdowns are often accompanied Each fault outlined in the descriptions that follow will
by audible motor backspin due to equalizing of the indicate whether it is a hardware or software generated
differential between discharge and suction when the fault. It will be noted the “ramped” shutdown results
compressor is turned off while rotating at high speeds. in minimal compressor backspin and noise associated
This should not cause concern and will not damage the with backspin. “Immediate” shutdowns will result in
chiller.
JOHNSON CONTROLS 223
FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

compressor backspin and a higher noise level based start. The start inhibit will be cleared when the fault
upon the differential pressure between discharge and condition goes away and the compressor will be per-
suction. mitted to start.
When a VSD fault occurs, the VSD Logic Board cap- Pre-charge Low DC Bus Voltage (Software) Fault
tures VSD data in the onboard battery backed RAM.
The DC Bus voltage must reach at least 50 VDC within
At the same time, the VSD Board “Fault Relay” will
four seconds and 500 VDC within 19 seconds after the
open, signaling the Chiller Control Board micropro-
pre-charge signal has been asserted. If not, the unit/sys-
cessor to save a snapshot of system data. The VSD
tem will shut down on a fault.
Logic Board then transmits the fault data to the Chill-
er Control Board microprocessor on the next comms This is an auto-restart safety that will lock out on the
between the two boards. If the Chiller Control Board 3rd fault in 90 minutes. The fault will be a unit fault
receives the comms fault indication before the Fault for 2 or 3 compressor chillers. The Status display fault
Relay signal, it will immediately save a snapshot of message is shown below:
system data when the comms fault is recognized. This
also enables the microprocessor to capture fault data UNIT YYYYYYYY
if the Fault relay fails. Both the system and VSD fault PRECHARGE - LOW DC BUS VOLTAGE
data are then stored in the Chiller Control Board his-
tory buffers. Any additional faults that may occur dur- The Low DC Bus voltage fault will be a unit fault for 2
ing shutdown on the first fault or between the first fault and 3 compressor units or a system fault for System 1/3
and the next comms will also be stored and transmit- or 2/4 for 4 compressor units. The reason for this is two
ted to the Chiller Control Board along with the original inverter power sections with separate DC Bus circuitry
fault data. This data will be stored as “ALL FAULT” for each inverter section is utilized on a 4 compressor
data. unit. One section serves systems 1 and 3 while another
serves systems 2 and 4. The Status display fault mes-
When the control panel acknowledges a fault (via the sage is shown below:
fault acknowledge bit in comms) the fault relay will be
reset (closed) by the VSD Logic Board and the fault SYS X YYYYYYYY PRECHARGE - LOW DC BUS VOLT
indication flag (in comms) will be reset.
The fault relay will not open when a non-running fault X indicates the system and YYYYYYY indicates the
occurs. In this case, the system will be inhibited from system is in a “FAULT” condition and will restart when
running until the fault condition is corrected. An inhibit the fault clears or “LOCKOUT” and will not restart un-
message will be displayed on the panel display indi- til the operator clears the fault using the keypad.
cating the system is not allowed to run. Examples of
this type of fault would be the High Internal Ambient Pre-charge DC Bus Voltage Imbalance
fault and the VSD CT Plug Fault. When the chiller re- (Software) Fault
ceives the transmitted fault data via comms, it will save
The 1/2 DC Bus voltage magnitude must remain with-
a snapshot of system data in the history buffer even
in plus or minus 100 VDC of the total DC Bus voltage
though the chiller is not running.
divided by two during the pre-charge interval. If not,
Some faults will be unit faults; other faults will be sys- the unit/system shall shut down on a fault.
tem (specific compressor or compressor pairs) faults, This safety will lock out on the 1st fault. The fault will
depending upon the number of compressors in the be a unit fault for 2 or 3 compressor units. The Status
chiller. Most faults will shut down the unit/ system and display fault message is shown below:
allow restart once the fault clears and the 120 seconds
anti-recycle timer times out. These faults will allow up UNIT YYYYYYYY
to 3 faults in 90 minutes before locking out the unit/ PRECHARGE - DC BUS VOLTAGE IMBALANCE
system. Other faults lock out the unit/system after only
a single fault. Details on individual faults are provided The fault will be a System 1/3 or 2/4 fault for 4 com-
in the following explanations. pressor units. Two key presses of the STATUS key are
required to show the fault on both systems. The Status
A start inhibit will take place if a VSD fault condition display fault message is displayed below:
exists and a compressor that is not running is called to

224 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SYS X YYYYYYYY PRECHARGE-BUS VOLT IMBAL SYS X YYYYYYYY LOW DC BUS VOLTAGE

X indicates the system and YYYYYYY indicates the X indicates the system and YYYYYYY indicates the
system is in a “LOCKOUT” condition and will not re- system is in a “FAULT” condition and will restart when
start until the operator clears the fault using the keypad. the fault clears or “LOCKOUT” and will not restart un-
til the operator clears the fault using the keypad.
High DC Bus Voltage (Hardware) Fault
The high DC Bus voltage trip level is determined by DC Bus Voltage Imbalance (Software) Fault
hardware on the VSD Logic Board and is designed to The 1/2 DC Bus voltage magnitude must remain with-
trip the unit at 766 plus or minus 30 VDC. If the DC in plus or minus 100 VDC of the total DC Bus voltage
Bus exceeds this level, the unit/system will fault and divided by two. If the 1/2 DC Bus magnitude exceeds
shut down immediately. the plus or minus 100 VDC tolerances, the unit/system
This safety is an auto-restart safety that will lock out will fault and immediately shut down.
on the 3rd fault in 90 minutes. The fault will be a unit This safety will lock out on the 1st fault. The fault will
fault for 2 or 3 compressor units. Two key presses of be a unit fault for 2 or 3 compressor units. Below is the
the STATUS KEY are required to show the fault on Status display fault message:
both systems. Below is the control panel Status display
fault message: UNIT YYYYYYYY
DC BUS VOLTAGE IMBALANCE
UNIT YYYYYYYY
HIGH DC BUS VOLTAGE The fault will be a System 1/3 or 2/4 fault on 4 com-
pressor units. Two key presses of the STATUS key are
The fault will be a System 1/3 or 2/4 fault on 4 com- required to show the fault on both systems. Below is a
pressor units. Below is the Status display fault mes- sample Status display fault message:
sages for all systems. Two key presses of the STATUS
key are required to show the fault on both systems. SYS X YYYYYYYY DC BUS VOLTAGE IMBALANCE

SYS X YYYYYYYY HIGH DC BUS VOLTAGE X indicates the system and YYYYYYY indicates the
system is in a “LOCKOUT” condition and will not re-
X indicates the system and YYYYYYY indicates the start until the operator clears the fault using the keypad.
system is in a “FAULT” condition and will restart when
the fault clears or “LOCKOUT” and will not restart un- High Motor Current (Hardware) Fault
til the operator clears the fault using the keypad. The three output lines to each phase of the compres- 8
sor motor are monitored via three current transformers
Low DC Bus Voltage (Software) Fault within the VSD. The unit’s three phases of instanta-
The low DC Bus voltage trip level is set at 500VDC. If neous output current will be compared to a predeter-
the DC Bus drops below this level the unit/system will mined limit, which is contained in hardware. The nom-
fault and immediately shut down. inal peak current trip level is 575.5 A (554 A minimum,
597 A maximum). 380 VAC, 60 Hz and 400 VAC, 50
The low DC Bus voltage cutout is an auto-restart safety Hz nominal peak current trip level is 649.5 A (626 A
that will lock out on the 3rd fault in 90 minutes. The minimum, 674 A maximum). The variation in trip point
fault is a unit fault for 2 or 3 compressor units. Below is is the result of component tolerances on the VSD Logic
an example of the Status display fault message: Board. If the peak current limit is exceeded, the unit
UNIT YYYYYYYY will fault and shutdown immediately.
LOW DC BUS VOLTAGE
This fault is an auto-restart safety that will lock out
system on the 3rd fault in 90 minutes. The fault will
The low DC Bus voltage cutout is a system fault (1/3
be an individual system/compressor fault for all units.
or 2/4) on 4 compressor units. Two key presses of the
Following is a sample Status display fault message:
STATUS key are required to show the fault on both
systems. Below is a sample Status display system fault
SYS X YYYYYYYY HIGH MOTOR CURRENT
message:

JOHNSON CONTROLS 225

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

X indicates the system and YYYYYYY indicates the normal operation, the voltage drop across a saturated
system is in a “FAULT” condition and will restart or IGBT is low. When a short or shoot occurs, the ex-
“LOCKOUT” and will not restart until the operator tremely high current causes the voltage across the de-
clears the fault using the keypad. vice to increase. When the electronic hardware on the
IGBT Gate Driver Board senses the current rise, it im-
Motor Current Overload (Software) Fault mediately turns off all IGBT’s in the module and the
The Motor Current Overload will compare the highest system will shut down immediately.
of the 3 phases of motor current per compressor to the
Additionally, if the IGBT’s Gate Driver board’s power
compressor’s 105% FLA ADJUST (overload) potenti-
supply voltage falls below the permissible limit, this
ometer setting on the VSD Logic Board. If the current
same fault will be generated.
exceeds the setting continuously for 20 seconds, the
compressor will trip. This is an auto-restart safety that will lock out on the
3rd fault in 90 minutes. The fault will be a system fault
This safety will lock out a system on the 1st fault and
for all units. Following is the Status display fault mes-
shut down with a controlled ramped shutdown. The
sages for all systems.
fault will be an individual system/compressor fault for
all systems. A sample Status display fault is shown be-
SYS X YYYYYYYY GATE DRIVER
low:

SYS X YYYYYYYY MOTOR CURRENT OVERLOAD X indicates the system and YYYYYYY indicates the
system is in a “FAULT” condition and will restart or
“LOCKOUT” and will not restart until the operator
X indicates the system and YYYYYYY indicates the
clears the fault using the keypad.
system is in a “LOCKOUT” condition and will not re-
start until the operator clears the fault using the keypad. High Baseplate Temperature (Software) Fault
Motor Current Overload (Hardware) Fault Each phase bank assembly contains one liquid cooled
heatsink to cool both the inverter power modules and
The Motor Current Overload will compare the highest
the converter SCR/Diode modules. Each compressor’s
of the 3 phases of motor current per compressor to the
inverter power module (6 IGBT’s and Gate Driver
compressor’s overload ADJUST potentiometer setting.
Board) contains an internal temperature sensor (5K
If the current exceeds the setting continuously for 30
ohm at 25°C) to monitor the baseplate temperature.
seconds, all compressors will fault and shut down im-
mediately. On two compressor chillers, the outputs from System 1
and System 2 sensors are each compared in software to
The fault will be a unit fault and will lock out all sys-
a limit of 218°F. If either sensor exceeds this limit, the
tems on the first fault. A sample Status display fault is
unit will fault and shut down with a controlled ramped
shown below:
shutdown.
UNIT YYYYYYYY
On 3 compressor chillers, the baseplate temperatures
MOTOR CURRENT OVERLOAD
on compressors 1 and 3 are OR’d together and the
highest of the two temperatures is compared in soft-
YYYYYYYY indicates the unit is in a "Lockout" con- ware to a limit of 232°F. Compressor #2 will have its
dition and will not restart until the operator clears the individual power module sensor compared in software
fault using the keypad. to a limit of 232°F. If the limit is exceeded by either of
the 2 inputs, the unit will fault and shut down with a
IGBT Gate Driver (Hardware) Fault
controlled ramped shutdown.
The unit’s phase bank assembly(s) contains one IGBT
3 compressor chillers operate at higher
gate driver control board per compressor. These boards
baseplate temperature compared to 2 or
monitor the saturation voltage drop across each of the
4 compressor chillers.
six IGBT’s while gated on. If the IGBT’s saturation
voltage exceeds the prescribed limit, the gate driver
will make the determination that a short circuit is pres-
ent. This in turn will cause the system to trip. During

226 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

On 4 compressor chillers, the baseplate temperatures Single Phase Input (Hardware) Fault
on compressors 1 and 3 are OR’d together and the The VSD’s SCR Trigger Control board contains cir-
highest of the two temperatures is compared in soft- cuitry that checks the three phase mains for the pres-
ware to a limit of 218°F. The baseplate temperatures on ence of all three-line voltages. If any of the line volt-
compressors 2 and 4 are OR’d together and the highest ages are not present, the system will immediately shut
of the two temperatures compared in software to a limit down on a fault.
of 218°F. If the limit is exceeded by either of the 2 in-
puts, the unit will fault and shut down with a controlled This fault will not cause a lockout. The fault will be
ramped shutdown. a unit fault for 2 or 3 compressor units. Below is the
Status display fault message.
This is an auto-restart safety that will lock out on the
3rd fault in 90 minutes. The fault will be a system fault UNIT YYYYYYYY
for all units. Below are the Status display fault mes- SINGLE PHASE INPUT VOLTAGE
sages for all systems.
The fault will be a system fault 1/3 or 2/4 for 4 com-
SYS X YYYYYYYY HIGH VSD BASEPLATE TEMP pressor units. Two key presses of the STATUS key are
required to show the fault on both systems. Below is
X indicates the system and YYYYYYY indicates the the fault message for all systems.
system is in a “FAULT” condition and will restart when
the fault clears or “LOCKOUT” and will not restart un- SYS X YYYYYYYY SINGLE PHASE INPUT VOLTS
til the operator clears the fault using the keypad.
X indicates the system and YYYYYYY indicates the
After a fault, the fan(s) and water pump will remain
system is “FAULT” and will restart when the single
energized until the inverter power module base plate
phase condition clears.
temperature(s) falls below 165°F.
The system will be allowed to restart when the inverter Power Supply (Hardware) Fault
power module base plate temperatures drop below this Various DC power supplies which power the VSD
value. Logic Board are monitored via hardware located on the
logic board. If any of these power supplies fall outside
It is possible for an internal sensor to fail and not sense
their allowable limits, the unit will immediately shut
temperature without causing a high baseplate sensor
down on a fault.
fault.
This is an auto-restart safety that will restart after the
High VSD Internal Ambient Temperature fault clears and lock out on the 3rd fault in 90 minutes.
(Software) Fault 8
The fault will be a unit fault for all units. Below is the
The VSD Logic board contains a temperature sensor, Status display fault message.
which monitors the unit’s internal ambient tempera-
UNIT YYYYYYYY
ture. If the VSD internal ambient temperature rises
VSD LOGIC BOARD POWER SUPPLY
above the cutout of 158°F, the unit will fault and shut
down with a controlled ramped shutdown.
YYYYYYY indicates the system is in a “FAULT” con-
This safety will not cause a lockout. The fault will be a dition and will restart when the fault clears or “LOCK-
unit fault for all units. Following is the Status display OUT” and will not restart until the operator clears the
fault message. fault using the keypad.
UNIT YYYYYYYY Run Relay (Software) Fault
HIGH VSD INTERNAL AMBIENT TEMP
Upon receipt of either of the two types of run com-
mands (hardware and software) a 5 second timer will
The unit will be allowed to restart when the internal commence timing. The hardware run signal comes
ambient temperature drops 10°F below the cutout. from the SYS X VSD Run Signal to the VSD Log-
YYYYYYYY indicates the unit is in a "Fault" condi- ic Board. The software run signal comes through the
tion and will restart when the condition clears. comms from the Chiller Control Board. If the missing

JOHNSON CONTROLS 227

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

run signal is not asserted within the 5-second window, This is an auto-restart safety that will restart after the
the system will fault. In addition, if either run signal is 120 second anti-recycle timer times out and lock out on
disabled while the VSD is running, the remaining run the 3rd fault in 90 minutes. The fault is a unit fault for
signal must be disabled within 5 seconds after the VSD all units. Following is the fault message.
is shut down or the system will fault. If running, the
UNIT YYYYYYYY
unit will fault and shut down with a controlled ramped
VSD CT PLUG FAULT
shutdown.
Control Panel Info - This is an auto-restart safety that YYYYYYYY indicates the system is in a “FAULT”
will autostart after the 120 second anti-recycle timer condition and will restart or "LOCKOUT" and will not
times out and will lock out on the 3rd fault in 90 min- restart until the operator clears the fault using the key-
utes. The fault will be a system fault for 2 compressor pad.
units. On 3 and 4 compressor units, the fault is com-
bined as a 1/3 or 2/4 system fault. Below are the fault VSD Fault Data
messages for all systems. When a fault has occurred, the VSD Logic Board will
capture fault data. This data will be stored in the on-
SYS X YYYYYYYY VSD RUN RELAY board battery backed RAM for safekeeping and trans-
ferred to the panel via the communications link as soon
X indicates the system and YYYYYYY indicates the as possible.
system is in a “FAULT” condition and will restart when
A fault code will be set for the fault that initiated the
the fault clears or “LOCKOUT” and will not restart un-
system shutdown. This fault will appear as a specific
til the operator clears the fault using the keypad.
fault in the Status message.
VSD Logic Board Failure (Software) Fault Any faults that occur after the initial fault, which occur
Upon receipt of the voltage and frequency commands, within the comms transmission time frame following
the PWM generator will acknowledge receipt of the the inception of the first fault, will be stored and trans-
command. If the system microprocessor does not re- mitted to the Micro Logic Board together with the first
ceive the handshake within 1.5 seconds of issuing the fault data. These faults will appear in the "All Fault"
command, the unit will trip. This safety is only active display in the History.
during precharge and during running of a compressor.
A snapshot of the operating parameters of the VSD is
It is not active when all the compressors are shut down
continuously updated in battery-backed memory once
and the precharge is disabled. If the VSD Logic Board
every program loop. Upon receipt of a first fault, the
Fault occurs while the chiller is running, all systems
snapshot of the operating parameters will be stored in
will immediately shut down on a fault.
memory and are transmitted to the panel as the fault
This is an auto-restart safety that will auto restart after data.
the 120 second anti-recycle timer times out and lock
out on the 3rd fault in 90 minutes. The fault is a unit Fault Relay/Fault Acknowledge Bit
fault for all units. Following is the fault message. Control of the Fault Relay is from the VSD Logic
UNIT YYYYYYYY
Board. The Fault Relay on the VSD will be closed dur-
ing a non-fault condition.
VSD LOGIC BOARD FAILURE
When a running or pre-charge fault occurs on the VSD,
VSD CT Plug (Hardware) Fault the fault relay will immediately open. The relay will
Jumpers are installed in each CT plug on the VSD Log- not open for non-running faults that occur.
ic Board to feed back signals to indicate if the plugs When the Chiller Control Board sees the VSD fault re-
are installed or not. If either plug is not installed, a low lay open, it will immediately take a snapshot of system
value is read on the digital input and the unit will im- data and save it to the history buffer.
mediate shutdown on a fault or will not run if off.

228 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

A fault acknowledge bit from the Chiller Control Low Battery Warning
Board is sent to the VSD via comms after receiving The LOW BATTERY WARNING can only occur at
valid fault data from the VSD. When the VSD Logic unit power-up. On micropanel power-up, the RTC bat-
Board receives the fault acknowledge via comms from tery is checked to see if it is still operational. If it is,
the panel it will reset (close) the Fault Relay. The fault normal unit operation is allowed. If the battery voltage
acknowledge is reset by the Chiller Control Board after is determined to be low, the following warning mes-
the Fault Relay is closed by the VSD Logic Board. sage is displayed indefinitely.
VSD Fault Compressor Start Inhibit UNIT WARNING: !! LOW BATTERY !!
If a VSD fault condition exists while the compressor is CHECK SETPOINTS/PROGRAM/OPTIONS/TIME
not running or pre-charging, the Chiller Control Board
will not try to start the faulted compressor(s). The start If a low battery condition exists, all programmed
inhibit will be automatically cleared when the fault setpoints, program values, time, schedule, and history
condition goes away. buffers will have been lost. These values will all be re-
set to their default values, which may not be the desired
UNIT WARNINGS operating values. Once a bad battery is detected, the
unit will be prevented from running until the MANU-
Unit Warning Operation AL OVERRIDE key is pressed. Once the MANUAL
Unit warnings are caused when a condition is pres- OVERRIDE key is pressed, the anti recycle timers will
ent requiring operator intervention to restart the unit. be set to the programmed default anti recycle time to
All setpoints, program values, and options should be allow the operator sufficient time to check setpoints,
checked before operating the unit. Warnings are not program values, etc.
logged to the history buffer. If a unit warning is in
If a low battery is detected, it should be replaced as
effect, the message will be displayed to the operator
soon as possible. The programmed values will all be
when the STATUS key is pressed.
lost and the unit will be prevented from running on the
STATUS next power interruption. The RTC/Battery is located on
KEY the Chiller Logic Board shown in Figure 60 on page
230.

MICROBOARD (331-03478-XXX)
The 331-03478-xxx microboard was developed as a
direct replacement for the 031-02478-xxx line of mi-
croboards. No adapter harness is required when replac-
8
ing a 02478 with the new 03478. The 03478 uses the
IPUII processor card and provides some new features
for the chillers that the 02478 did not have. The 03478
program resides in flash memory instead of EPROM.
Program updates are accomplished by loading the new
program from an SD card inserted into the SD card
reader/writer. This same SD card reader/writer also al-
lows the user to datalog the operating parameters to an
SD card every 5 seconds. This information is invalu-
LD10605 able when troubleshooting unit and system problems
since it allows the service technician to view operat-
ing parameters prior to a unit fault. Details on the new
datalogging capability are explained in the OPTIONS
Key area of this manual. A Real Time Clock/BRAM
keeps time and setpoints during power outtages.

JOHNSON CONTROLS 229

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Power Supplies and LEDs RX1 – Green LED flashes when receiving data in Port
The 03478 has LEDs to indicate various states of op- 1 TB3 (Future native communications BAS port)
eration of the microboard. TX2 – Red LED that flashes when transmitting data
STATUS – Flashes every ½ second to indicate that the out Port 2 (E-Link TB2 or printer TB1)
base board processor is running its program. RX2 – Green LED that flashes when receiving data in
POWER – On solid indicates that the base board +12 Port 2 (E-Link TB2 or printer TB1)
V and +5 V power supplies are operational. VSD_TX – Red LED that flashes when transmitting
TX1 – Red LED flashes when transmitting data out data out Port 3 to the VSD Logic board
Port 1 TB3 (Future native communications BAS port) VSD_RX – Green LED that flashes when receiving
data in Port 3 from the VSD Logic board

TP10 +24 V TP5 +15 V TP4 +12 V TP1 GND

Port 1
Future
Native
BAS

TP3
+5V
U26 Port 1
TP2 RS-485 Driver
+3.3V

U18 VSD
SD RS-485 Driver
Card VSD RX
VSD TX
RS-232
to Printer
Port 2
RX2
TX2

Port 2 U23 Port 2

RS-485 to RS-485 Driver
JP4 JP5 JP6 Remote U5 RTC/ Power Status Power LED E-Link
Setpoint Jumpers BRAM LED LED LD19331

Figure 60 - MICROBOARD 331-03478-XXX

24 VAC power is applied to the 331-03478-xxx mi-

croboard connector J12 and is then used to create the
various DC power sources required by the microboard
circuitry. If the chiller control is malfunctioning, the
power supply test points should be measured to deter-
mine the status of the microboard.

230 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Power Supply Test Points VSD communications activity.U18 is the VSD Port
TP1 GND (Measure TP2, TP3, TP4 and TP5 in refer- RS-485 Driver Chip. It is socketed to allow field re-
ence to this Test Point) placement.

TP2 +3.3 V [3.2 VDC to 3.4 VDC] provides power to PROGRAM UPDATE
the processors
The Application software and BACnet database are
TP3 +5 V [4.8 VDC to 5.2 VDC] power communiac- stored in the IPU II Flash memory. Copying a new ver-
tion ports 2,3 and 4 and analog sensors sion of software and/or database from the SD Flash
card changes the IPU II Flash. The new application
TP4 +12 V [11.64 VDC to 12.36 VDC] powers the dis- software must be named SOFTWARE.BIN. The new
play and backlight and is regulated to become the +5 V BACnet database must be named DATABASE.BIN.
TP5 +15 V [11.3 VDC to 16.6 VDC] powers the analog These files must be located in the root directory of the
outputs to the EEV valves SD Flash card. The software can be updated without
updating the database. In this case, the existing data-
Configuration Jumpers base will be used with the new software. The database
cannot be updated without updating the software.
The same configuration jumpers that existed on the
02478 are provided on the 03478. To update the Program:
JP4 Remote Temp Reset jumper position Pins 1 to 2 1. Copy the new software in to the root directory of
(left) = 4 mA to 20 mA, Pins 2 to 3 (right) = 0 VDC to the SD card.
10 VDC
2. Rename this new program file SOFTWARE.BIN.
JP5 Remote Current Limit jumper position Pins 1 to 2
3. Turn the Unit Switch OFF.
(left) = 4 mA to 20 mA, Pins 2 to 3 (right) = 0 VDC to
10 VDC 4. Insert the SD card in to the SD card Reader/Writer
slot.
JP6 Remote Sound Limit jumper position (Pins 1 to 2
(left) = 4 mA to 20 mA, Pins 2 to 3 (right) = 0 VDC to 5. Press the OPTIONS Key and then press the Down
10 VDC Arrow Key until FLASH CARD UPDATE DIS-
ABLED is displayed.
Communication Ports
6. Press the RIGHT ARROW Key to change the
TB3 Port 1 Native BAS RS-485. DISABLED to ENABLED
SW1 RS-485 Biasing Switch for Port. Set to ON if 7. Press the ENTER Key to start the update. Once
Chiller is in an End Of Line position on the network. the ENTER Key is pressed the message FLASH 8
CARD
U26 is the Port 1 RS-485 Driver Chip. It is socketed to
allow field replacement. RX1 and TX1 LEDs illumi- 8. UPDATING PLEASE WAIT... is displayed until
nate to indicate Port 1 communications activity. the update has been completed. The keypad and
display will not respond during the flash update.
E-Link
Do not reset or power down the chiller
SW2 RS-485 Biasing Switch for E-link Port 2, should until the update is finished. Interrupting
be in the OFF position. the Flash Update procedure can corrupt
the program file and render the control
TB2 is the Port 2 RS-485 E-Link Communications
board inoperative.
Port. RX2 and TX2 LEDs illuminate to indicate the
Port 2 communications activity. U23 is the Port 2 RS-
9. After the software is finished updating, the con-
485 Driver Chip. It is socketed to allow field replace-
troller will automatically reboot.
ment. J16 provides +12 VDC to power the E-Link.
10. If an error occurs during the update, an error mes-
VSD sage will be displayed where XXXX is the Error
J2 VSD#1 and J1 VSD#2 connections headers for RS- Code.
485 communications to the Variable Speed Drive(s).
VSD RX and VSD TX LEDs illuminate to indicate the
JOHNSON CONTROLS 231
FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Table 15 - FLASH CARD UPDATE ERROR XXXXX Follow all JCI Safety Directives when in-
FLASH CARD serting or removing the SD card since the
UPDATE DEFINITION card is located inside the control cabinet.
ERROR CODE
0 Okay
10 Flash card not found.
11 SOFTWARE.BIN file not found
SOFTWARE.BIN file larger than ex- To start the Data Logging, insert the SD card into the
14
pected.
RAM to IPU Flash transfer of DATABASE.
SD card slot on the 03478 IPUII board. The label on
15
BIN failed. the SD card should be facing outwards.
RAM to IPU Flash transfer of SOFT-
16
WARE.BIN failed.
Once the SD card is inserted and the unit is powered
Could not allocate sufficient memory to up, press the OPTIONS key. Then press the Down Ar-
17 row key to advance to the DATA LOG TO FLASH-
read or write file.
99 Internal software error. CARD selection. Next press the Right Arrow key to
select ON then press the ENTER key to start the Data
11. After the update is completed and the controller
Log. A 2GB SD card will hold about 8 months worth
reboots, the keypad and display will return to full
of data. A smaller card may be used that will hold less
functionality. The SD card may be left in place for
data but should be tested for compatibility. The con-
datalogging or else replaced with another SD card
troller operating system does not support SD cards
dedicated for datalogging.
larger than 2GB. When the SD card becomes full, the
12. To remove the SD card, GENTLY press the card oldest date file is automatically deleted and a new day
in slightly then release the pressure. The card log file is written in its place.
should then pop out slightly to allow removal.
To stop the data logging and retrieve the SD card, press
DATA LOGGING the OPTION key and then the Down Arrow key to dis-
play the DATA LOG TO FLASHCARD option and
A 2GB SD card (p/n 031-03466-000) may be inserted
then use the Right Arrow key to select OFF then press
into the 03478 IPUII SD card slot to record the chiller
the ENTER key.
operating parameters at 5 second intervals. The data is
stored in a folder named RMYYYYMM where YYYY Again, follow the JCI Safety Directives to stop the
is the year and MM is the month the data was recorded. chiller, power off the unit and open the control cabiner
The controller creates a file for each day within this door to retrieve the SD card.
folder with the format YYYYMMDD.csv where DD
equals the day of the month in addition to the Y Year Once inside the control cabinet, lightly press in on the
and M Month fields. For example: The folder named SD card and then release the pressure. The SD card
RM201503 is a folder created in March of 2015. should pop out slightly to allow removal. You may then
Within this folder would be a file for each day of that copy the files to a PC for analysis or email the file to
month that the datalogging is running. If a review of someone. The files are saved as a CSV format which
the History Report shows that an abnormal event oc- can be read by Excel. Below is a sample of some of
curred on March 3rd at 2:05pm, the user can import the the data imported from a YCIV Chiller. Once the file
20150303.csv file into Excel and look at the system is read in to Excel, you can hide unrelated columns or
parameter details leading up to the 2:05pm event. plot desired parameters to analyze the data.
Table 16 - DATA LOGGING
SYS 1 SYS 1 SYS SYS 1 1SYS 1 SYS 1 1 1SYS
SAT SYS MTR SYS SAT SYS 1 SYS SYS 1 SYS 1 SYS SYS 1
SUCT DSCH 1 OIL SUCT SUCT SUCT CURR DSCH DSCH DSCH 1 OIL COMP ECON 1 FAN MOTOR
HOUR MIN SEC PRESS PRESS PRESS TEMP
TEMP SHEAT FLA TEMP TEMP SHEAT TEMP STATUS STAGE TEMP1

PSIG PSIG PSIG <?>F <?>F <?>F AMPS <?>F <?>F <?>F <?>F <?>F
0 0 10 82.6 84.4 84.4 93 77.5 15.5 0 83 78.6 4.4 82 OFF OFF 0 107.9
11 0 15 82.6 84.4 84.4 93 77.5 15.5 0 83 78.6 4.4 82 OFF OFF 0 107.9
11 22 20 82.6 84.4 84.4 93 77.5 15.5 0 83 78.6 4.4 82 OFF OFF 0 107.9
11 22 25 82.6 84.4 84.4 93 77.5 15.5 0 83 78.6 4.4 82 OFF OFF 0 107.9
11 22 30 82.6 84.4 84.4 93 77.5 15.5 0 83 78.6 4.4 82 OFF OFF 0 107.9
11 22 35 82.5 84.4 84.4 93 77.4 15.6 0 83 78.6 4.4 82 OFF OFF 0 107.9

232 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Invalid Number of Compressors Warning

The INVALID NUMBER OF COMPRESSORS SE- The appearance of this message means an optimized
LECTED Warning will occur after the VSD has been chiller is programmed for standard control.
initialized, if no ”Number of Compressors Select” UNIT WARNING: OPTIMIZED EFFICIENCY
jumpers are installed or if more than 1 jumper is in-
DISABLED - CONTACT YORK REPRESENATIVE
stalled. The following warning message will be dis-
played indefinitely. Optimized IPLV cannot be enabled unless a special
UNIT WARNING: password is entered. Once the password is entered and
INVALID NUMBER OF COMPRESSSORS SELECTED the option is enabled using the SERVICE key, the mes-
sage will disappear (see Page 292).
To clear this warning, both the control panel and VSD This status message can be bypassed to view additional
control voltage must be turned off and the jumpers messages under the STATUS key by pressing the STA-
properly installed in the VSD wiring harness (see Page TUS key repeatedly to scroll through as many as three
210 for more details on jumper installation). STATUS messages that could possibly be displayed at
These jumpers are factory installed in the any time.
wire harness plug and should not require
changes. UNIT SAFETIES

Unit Safety Operation

Unit faults are safeties that cause all running compres-
sors to be shut down, if a safety threshold is exceeded
Invalid Serial Number Warning for 3 seconds. Unit faults are recorded in the history
If the INVALID SERIAL NUMBER message appears, buffer along with all data on the unit and system oper-
immediately contact Johnson Controls Product Techni- ating conditions. Unit faults are auto reset faults where
cal Support. The appearance of this message may mean the unit will be allowed to restart automatically after
the chiller has lost important factory programmed in- the fault condition is no longer present. The only ex-
formation. The serial number can be entered using the ception is any of the VSD related unit faults. If any 3
SERVICE key. VSD unit faults occur within 90 minutes, the unit will
be locked out on the last fault. A VSD lockout condi-
UNIT WARNING: INVALID SERIAL NUMBER
tion requires a manual reset using the system switches.
ENTER UNIT SERIAL NUMBER
Both system switches must be cycled off and on to
clear a VSD unit lockout fault. If a unit safety is in
Additionally, when this appears, an Optimized IPLV
chiller will only run in Standard IPLV control mode.
effect, the message will be displayed to the operator 8
when the STATUS key is pressed.
Optimized IPLV cannot be enabled unless the serial
number is programmed into the unit using the special STATUS
password supplied by Johnson Controls Product Tech- KEY
nical Support. Once the password is entered, a second
password will be needed to activate the optimized
IPLV control (see Page 292).
This status message can be bypassed to view additional
messages under the STATUS key by pressing the STA-
TUS key repeatedly to scroll through as many as three
STATUS messages that could possibly be displayed at
any time.

Optimized Efficiency Disabled

If the OPTIMIZED EFFICIENCY DISABLED mes-
sage appears, immediately contact Johnson Controls
Product Technical Support or Johnson Controls ES LD10605
Commercial.

JOHNSON CONTROLS 233

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

In the descriptions of the fault displays that follow, the Low Leaving Chilled Liquid Temp Fault
fault message will show a YYYYYYY to indicate that The Low Leaving Chilled Liquid Temp Cutout helps to
a system is in a “FAULT” condition and will restart protect the chiller from an evaporator freeze-up should
when the fault clears or LOCKOUT” and will not re- the chilled liquid temp drop below the freeze point.
start until the operator clears the fault using the keypad. This situation could occur under low flow conditions
If a control panel safety occurs after the VSD fault, but or if the Micro Panel setpoint values are improperly
before the fault is reset, the control panel fault is an programmed. Any time the leaving chilled liquid tem-
ALL FAULT of the VSD fault, meaning it will be reg- perature (water or brine) drops below the program-
istered as such in the History because it occurred while mable cutout point, the chiller will fault and shutdown
the VSD was shutting down or while the systems were with a controlled ramped shutdown. Restart can occur,
shut down. All faults do not store operating data at the if demand allows, when chilled liquid temperature
time of the fault. rises 4°F above the cutout. This fault cannot cause a
lockout. A sample shutdown message is shown below:
If a “VSD” fault occurs during the fault rampdown or
UNIT YYYYYYYY
while the systems are shut down, the VSD fault will
LOW LEAVING CHILLED LIQUID TEMP
be registered as a new fault. The reason for this is the
belief any VSD fault should be registered with a full
The unit is inhibited from starting any time the chilled
account of the systems data at the time of the fault.
liquid temperature is below the cutout plus 4°F.
High Ambient Temp Fault
VSD Communications Failure Fault
If the ambient temperature rises above 130°F, the chill-
The VSD Communications Failure is to prevent the
er will shut down with a controlled ramped shutdown.
unit from trying to run, if the Chiller Control Board
Restart will automatically occur, if demand allows,
never initializes communications with the VSD Logic
when temperature falls 2°F below the cutout (128°F).
Board. The unit will also shut down with a controlled
This fault cannot cause a lockout. The fault display
ramped shutdown if the Chiller Control Board loses
message will be present only during the time when
communications with the VSD Logic Board while the
the ambient temperature is causing a fault condition. A
chiller is operating.
sample display is shown below:
UNIT YYYYYYYY
On power-up, the Chiller Microprocessor Board will
attempt to initialize communications with the VSD
HIGH AMBIENT TEMP
Logic Board. The control panel will request data from
The unit will also be inhibited from starting any time the VSD, which includes the number of compressors
the temperature is above 128°F. and the VSD software version. Once these data points
have been received by the Chiller Control Board, and
Low Ambient Temp Fault have been successfully initialized, the Chiller Control
Board will not request them again. If the comms con-
If the ambient temperature falls below the program-
nection fails to occur, the Chiller Control Board will
mable Low Ambient Temp Cutout the chiller will shut
prevent the chiller from operating and a fault message
down with a controlled ramped shutdown. This fault
will be displayed.
will only occur if the Low Ambient Cutout is “EN-
ABLED” under the OPTIONS key. Restart can occur, During normal operation, if the control panel Chiller
if demand allows, when temperature rises 2°F above Control Board receives no valid response to messages
the cutout. This fault cannot cause a lockout. The fault for 8 seconds, the unit will shut down all compressors
display message will be present only during the time on a Comms fault. The Chiller Control Board will con-
when the ambient temperature is causing a fault condi- tinue to send messages to the VSD while faulted. The
tion. A sample display is shown below: unit will be inhibited from starting until communica-
UNIT YYYYYYYY tions is established. The fault will automatically reset
LOW AMBIENT TEMP
when the Chiller Control Board receives a valid re-
sponse from the VSD for a data request. Shown below
The unit is also inhibited from starting any time the is an example of a Comms Failure fault message:
temperature is below the cutout plus 2°F. UNIT YYYYYYYY
VSD COMMUNICATIONS FAILURE

234 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SYSTEM SAFETIES (FAULTS)

System Safety (Fault) Operation

System safeties are faults that cause individual systems In some cases, a control panel fault will occur after
to be shut down if a safety threshold is exceeded for 3 a VSD fault, possibly during system shutdown or at
seconds. System faults are auto reset faults in that the some later time. This is known as an “ALL FAULT”
system will be allowed to restart automatically after the and these faults will be recorded as such under the
120 second anti-recycle timer times out. The only ex- HISTORY information stored at the instant of the pri-
ception is after any 3 faults on the same system occur mary fault. In some cases, this information may be
within 90 minutes, that system will be “locked out” on valuable in troubleshooting the primary fault. An ex-
the last fault. The lockout condition requires a manual ample of the “ALL FAULT” history message is shown
reset using the system switch. The respective system on Page 263 under the HISTORY key. When an “ALL
switch must be cycled off and on to clear the lockout FAULT” occurs, associated history information will
fault. See Table 21 on page 262 for the programmable not be stored. If an additional fault does not occur, the
limits for many of the cutouts. “ALL FAULTS” display will indicate NONE. In cases
where a VSD fault occurs during the rampdown of a
When multiple systems are operating and a system control panel fault (i.e.: low suction pressure, low wa-
fault occurs, the running systems will ramp down and ter temp, etc.), the VSD fault will be stored as a new
the faulted system will be shut off and the previously fault with the associated fault information stored at the
operating will restart if required after the fault clears instant the VSD fault occurred (i.e.: IGBT Gate Drive,
and/or the 120 second anti-recycle timer times out. Single Phase Input, VSD CT Plug, etc.). The control
In the descriptions of the fault displays that follow, the panel fault that occurred prior to the VSD fault will be
fault message will show a YYYYYYYY to indicate stored with the associated complete data related to the
that a system is in a “FAULT” condition and will re- fault as a numerically lower numbered history in the
start when the fault clears, or “LOCKOUT” and will history buffers.
not restart until the operator clears the fault using the
High Discharge Pressure Cutout (Software)
keypad. If a system safety is in effect, the message will
Fault
be displayed to the operator when the STATUS key is
pressed. The High Discharge Pressure Cutout is a software
fault. A system will fault and shut down with a con-
STATUS
KEY
trolled ramped shutdown on high discharge pressure
when the discharge pressure rises above 274 psig for
0.5 seconds. The system will be allowed to restart
when the discharge pressure falls to 259 psig. The sys- 8
tem will also be inhibited from starting if the pressure
is above 259 psig. The fault message for this safety is
shown below:

SYS X YYYYYYYY HIGH DISCHARGE PRESSURE

X indicates the system and YYYYYYYY indicates

the system is in a “FAULT” condition and will restart
when the 120 second anti-recycle timer times out, or
“LOCKOUT” and will not restart until the operator
clears the fault using the keypad.

LD10605

JOHNSON CONTROLS 235

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

High Discharge Pressure Cutout (HPCO)

(Hardware) Fault
The mechanical High Pressure Cutout protects the The cutout pressure during operating periods of 30 sec-
system from experiencing dangerously high discharge onds to 210 seconds is ramped and can be calculated
pressure. A system will fault and shut down immedi- by:
ately when the mechanical high pressure cutout con- Cutout = (Programmed Cutout x Run Time)–1.2 psig
tacts open. The fault will occur immediately and not 200
wait 3 seconds, which is typical of most system faults.
The HPCO is wired in series with the VSD Run Signal After the first 3 minutes and 30 seconds of run time, if
and will only be checked by the Chiller Control Board the suction pressure falls below the cutout as a result
when the system is running. of a transient in the system, a transient timer is set at
30 seconds and a linearly ramped cutout is set start-
The mechanical cutout opens at 315 psig plus or minus ing at 10% of the programmed cutout. If over the next
8 psig and closes at 230 psig plus or minus 10 psig. The 30 seconds, the suction pressure does not stay above
Status display fault message for this system is shown the ramped cutout, which ramps between 10% of the
below: cutout and the programmed cutout over the 30 second
period, the system will fault on low suction pressure.
SYS X YYYYYYYY HPCO FAULT
Low Motor Current Cutout Fault
X indicates the system and YYYYYYY indicates the The Motor Current Cutout shuts the system down with
system is in a “FAULT” condition and will restart when a controlled ramped shutdown when the microproces-
the 120 second anti-recycle timer times out or “LOCK- sor detects the absence of motor current (less than 10%
OUT” and will not restart until the operator clears the FLA), usually indicating that a compressor is not run-
fault using the keypad. ning. This safety is ignored for the first 10 seconds of
operation.
Low Suction Pressure Cutout (Software) Fault
The status display fault message for this safety is
The programmable Low Suction Pressure Cutout is shown below:
a secondary back-up for the flow switch and protects
against operation with low refrigerant charge, which SYS X YYYYYYYY LOW MOTOR CURRENT
helps protect the chiller from an evaporator freeze-up,
should the system attempt to run with a low refrigerant
charge. The Status display fault message for this cut- X indicates the system and YYYYYYY indicates the
out is shown below: system is in a “FAULT” condition and will restart when
the 120 second anti-recycle timer times out or “LOCK-
SYS X YYYYYYYY LOW SUCTION PRESSURE OUT” and will not restart until the operator clears the
fault using the keypad.
X indicates the system and YYYYYYY indicates the High Differential Oil Pressure Cutout Fault
system is in a “FAULT” condition and will restart when
The High Differential Oil Pressure Cutout protects the
the 120 second anti-recycle timer times out or “LOCK-
compressor from low oil flow and insufficient lubri-
OUT” and will not restart until the operator clears the
cation, possibly from a dirty oil filter. A system will
fault using the keypad. Typically, the cutout will be set
fault and shut down with a controlled ramped shut-
at 24 psig for chilled water applications.
down when its Discharge to Oil Differential Pressure
The cutout is ignored for the first 30 seconds of system rises above the cutout of 65 psid. This safety is ignored
run time. During the next 3 minutes of run time the for the first 90 seconds of run time. This safety mea-
cutout point is linearly ramped from 10% of the cutout sures the pressure differential between discharge and
value up to the programmed cutout point. If at any time oil pressure, which is the pressure drop across the oil
during the first 3 minutes of operation the suction pres- filter. The Status display fault message for this safety
sure falls below the ramped cutout point, the system is shown below:
will shut down with a controlled ramped shutdown.
SYS X YYYYYYYY HIGH DIFF OIL PRESSURE

236 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

X indicates the system and YYYYYYY indicates the Under these conditions, the slow speed of the running
system is in a “FAULT” condition and will restart when compressor(s) causes the oil differential to become
the 120 second anti-recycle timer times out or “LOCK- very low, especially if the water temperature is high
OUT” and will not restart until the operator clears the and the suction pressure is high. The bypass assures
fault using the keypad. the compressor(s) will not trip on a nuisance low oil
differential fault.
Low Differential Oil Pressure Cutout Fault
The Low Differential Oil Pressure Cutout protects the High Discharge Temperature Cutout Fault
compressor from low oil flow and insufficient lubrica- The High Discharge Temperature Cutout protects the
tion. A system will fault and shut down with a controlled motor and compressor from overheating. A system will
ramped shutdown when it’s differential between oil fault and shut down with a controlled ramped shutdown
and suction pressure falls below the cutout. This safety when its Discharge Temperature rises above 250°F. A
assures that the compressor is pumping sufficiently to system will also be inhibited from starting if the dis-
push oil through the oil cooling circuit and through the charge temperature is above 200°F. The Status display
internal compressor lubrication system. The Status dis- fault message for this safety is shown below:
play fault message for this safety is shown below:
SYS X YYYYYYYY HIGH DSCHARGE TEMP
SYS X YYYYYYYY LOW DIFF OIL PRESSURE
X indicates the system and YYYYYYY indicates the
X indicates the system and YYYYYYY indicates the system is in a “FAULT” condition and will restart when
system is in a “FAULT” condition and will restart when the 120 second anti-recycle timer times out or “LOCK-
the 120 second anti-recycle timer times out or “LOCK- OUT” and will not restart until the operator clears the
OUT” and will not restart until the operator clears the fault using the keypad.
fault using the keypad.
High Oil Temperature Cutout Fault
The safety is ignored for the first 60 seconds of run
The High Oil Temperature Cutout protects the com-
time. After the first 60 seconds of operation, the cutout
pressor from insufficient lubrication. A system will
is linearly ramped from 0 psid to 30 psig in 5 minutes
fault and shut down with a controlled ramped shutdown
to 10 minutes based on ambient temperature. See Table
when its oil temperature rises above 225°F. The system
17 on page 237 for the ramp times for the given ambi-
will be inhibited from starting if the oil temperature is
ent temperatures.
above 175°F. The Status display fault message for this
Table 17 - LOW DIFFERENTIAL OIL PRESSURE
safety is shown below:
CUTOUT
SYS X YYYYYYYY HIGH OIL TEMP 8
RAMP
AMBIENT TEMPERATURE
TIME
> 50ºF 5 min
X indicates the system and YYYYYYY indicates the
system is in a “FAULT” condition and will restart when
> 45ºF 6 min
the fault clears or “LOCKOUT” and will not restart un-
> 40ºF 7 min
til the operator clears the fault using the keypad.
> 35ºF 8 min
> 30ºF 9 min Low Suction Superheat Cutout Fault
>=30ºF 10 min The Low Suction Superheat Cutout helps protect the
A 30 second safety bypass below 50 Hertz is employed compressor from liquid floodback due to low suction
during rampdown. The bypass is primarily needed superheat. This safety is ignored for the first 30 sec-
under conditions where another compressor is be- onds of compressor operation. Low suction superheat
ing brought on and the running compressor is being will fault a system when any one of the following con-
ramped down to 5 Hertz to add the additional compres- ditions occur:
sor due to load requirements.

JOHNSON CONTROLS 237

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

• After the first 30 seconds of run time, if the suc- The Status display fault message for this safety is
tion superheat falls below 2.0°F, the discharge su- shown below:
perheat is less than 15°F, and the run time is less
than 5 minutes, the superheat safety will be ignored SYS X YYYYYYYY LOW DISCHARGE SUPERHEAT
for the next 30 seconds followed by setting the su-
perheat cutout to 0°F and linearly ramping it up to X indicates the system and YYYYYYY indicates the
2.0°F over the next 60 seconds. system is in a “FAULT” condition and will restart when
If at any time during these 60 seconds the suc- the 120 second anti-recycle timer times out or “LOCK-
tion superheat falls below the ramped cutout, the OUT” and will not restart until the operator clears the
system will fault and shut down with a controlled fault using the keypad.
ramped shutdown.
Sensor Failure Cutout Fault
• If the suction superheat less than 2°F, the dis-
charge superheat less than 15°F for 10 seconds, The Sensor Failure Cutout prevents the system from
and the run time is equal to or more than 5 min- running when a critical sensor (transducer, level sen-
utes, the system will fault and shutdown with a sor, or motor winding temp sensor) is not function-
controlled ramped shutdown. ing properly and reading out of range. This safety is
• If the suction superheat less than 0.5°F and dis- checked at start-up and will prevent the system from
charge superheat is more than 15°F for 60 seconds running if one of the sensors has failed.
and run time equal to or more than 5 minutes, the The sensor failure safety will also fault and shutdown
system will fault and shutdown with a controlled a system while in operation, if a safety threshold is ex-
ramped shutdown. ceeded or a sensor reads out of range (high or low).
• If suction superheat less than 5°F for 10 minutes, Following is the Status display fault message.
the system will fault and shutdown with a con-
SYS X YYYYYYYY SENSOR FAILURE:
trolled ramped shutdown.
ZZZZZZZZZZZZ
The Status display fault message for this safety is
shown below: X indicates the specific system. YYYYYYYY
will either indicate the system is in a
SYS X YYYYYYYY LOW SUCTION SUPERHEAT “FAULT” condition and will restart when
the fault clears, or “LOCKOUT” after 3
X indicates the system and YYYYYYYY indicates the faults and will not restart until the opera-
system is “FAULT” and will restart after the 120 sec- tor clears the fault using the keypad.
ond anti-recycle timer times out or “LOCKOUT” and
will not restart until the operator clears the fault. ZZZZZZZZZZZ indicates the failed sensor below:
• SUCT PRESS
Low Discharge Superheat Cutout Fault
The Low Discharge Superheat Cutout helps protect the • OIL PRESS
compressor primarily from liquid floodback through • DSCH PRESS
the economizer line due to a high flash tank level. It
also provides protection from liquid floodback through • LEVEL SENSOR
the suction line in conjunction with the low superheat • MOTOR TEMP X *
safety. This safety is ignored for the first 5 minutes of
* The Unit Setup Mode allows a specific motor temperature sensor
compressor operation. to be ignored, if it fails.

After the first 5 minutes of run time, if the discharge The start inhibit thresholds for each sensor are shown
superheat falls below 10.0°F for 5 minutes, the sys- in Table 18 on page 239.
tem will fault and shut down with a controlled ramped
shutdown.

238 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Table 18 - START INHIBIT SENSOR THRESHOLDS Below is a sample Status fault display fault message:
LOW THRESH- HIGH THRESH-
SENSOR
OLD OLD SYS X YYYYYYYY HIGH FLASH TANK LEVEL
Suction
0.3 VDC 4.7 VDC
Transducer
X indicates the system and YYYYYYY indicates the
Oil Transducer 0.3 VDC 4.7 VDC system is in a “FAULT” condition and will restart when
Discharge the 120 second anti-recycle timer times out or “LOCK-
0.3 VDC 4.7 VDC
Transducer OUT” and will not restart until the operator clears the
Level Sensor 3.0 mA 21.0 mA fault using the keypad.
Motor Temp.
Sensor
0ºF 240ºF System Control Voltage Cutout Fault
The System Control Voltage Cutout alerts the operator
High Motor Temperature Cutout Fault the 115 VAC Control voltage to one of the systems is
The High Motor Temperature Cutout prevents a com- missing. This could be due to a system fuse that has
pressor from running when its motor temperature is too been removed or is blown. The affected system will
high. A system will fault and shut down when any com- fault and shut down immediately when the 115 VAC
pressor motor temperature sensor rises above 250°F. supply is lost.
The system will be inhibited from starting if its mo- The safety will “not” shut down a system if the UNIT
tor temperatures sensors indicate temperatures above switch is OFF, which electrically removes the 115 VAC
240°F. If any single temperature sensor is being ig- to “all” systems. The safety is only used to indicate
nored under the Unit Set-up Mode, that sensor will not a situation where a single system is missing the 115
be utilized when evaluating motor temperature. VAC. The safety will not cause a lockout and the sys-
Below is a sample Status display fault message: tem fault will reset when power is returned. A sample
message is shown below:
SYS X YYYYYYYY HIGH MOTOR TEMP
SYS X YYYYYYYY CONTROL VOLTAGE

X indicates the system and YYYYYYY indicates the

system is in a “FAULT” condition and will restart when X indicates the system and YYYYYYY indicates the
the fault clears or “LOCKOUT” and will not restart un- system is in a “FAULT” condition and will restart when
til the operator clears the fault using the keypad. the fault clears or “LOCKOUT” and will not restart un-
til the operator clears the fault using the keypad.
High Flash Tank Level Cutout Fault
8
The Flash tank level Cutout prevents the system from
running when the liquid level in the flash tank is too
high. The safety will be ignored for the first 15 seconds
of system operation.
A fault will occur if the tank level is greater than 85%
for 10 seconds.

JOHNSON CONTROLS 239

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

STATUS KEY

STATUS
KEY

LD10605

Status Key Operation

The STATUS key displays the current chiller or system (C)2004 YORK INTERNATIONAL CORPORATION
operational status. The messages displayed include C.XXX.XX.XX 18-SEPT-2005 12:45: AM
running status, cooling demand, system faults, unit
faults, VSD faults, unit warnings, external device sta- Unit status messages occupy 2 lines of the Status mes-
tus, load limiting, anti-recycle timer, status of unit/sys- sage display. If no unit status message applies, individ-
tem switches, and a number of other messages. Press- ual status messages for each system will be displayed.
ing the STATUS key will enable the operator to view On 3 and 4 compressor units, the STATUS key must be
the current status of the chiller. The display will show pressed twice to display the status of all systems.
one message relating to the “highest priority” informa-
tion as determined by the microprocessor. The STA- Any time the STATUS key is pressed or after the
TUS key must be pressed twice to view both System EPROM message disappears at power-up, a status dis-
1/2 and System 3/4 data. There are three types of status play indicating chiller or system status will appear.
data, which may appear on the display:
Multiple STATUS messages may appear and can be
• General Status messages viewed by pressing the STATUS key repeatedly to al-
low scrolling through as many as three STATUS mes-
• Unit Safeties sages, that could possibly be displayed at any time on
• System Safeties. a 2 compressor chiller or 4 messages that could be dis-
played on a 3 or 4 compressor chiller.
When power is first applied to the control panel, the
following message displaying YORK International Examples of the typical Status messages are shown in
Corporation, the EPROM version, date, and time will the next topic
be displayed for 2 seconds, followed by the appropriate
general status message:

240 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

General Status Messages

UNIT STATUS This message indicates the system switch (software via
MANUAL OVERRIDE keypad) is turned off. The system will not be allowed
to run until the system switch is turned ON via the key-
This message indicates the chiller is operating in pad.
MANUAL OVERRIDE mode. This message is a pri-
ority message and cannot be overridden by any other SYS X NOT RUNNING
STATUS message. When in Manual Override, no other
status message will ever be present. This message indicates the system is not running be-
UNIT STATUS cause the chilled liquid is below the setpoint or the
UNIT SWITCH OFF SHUTDOWN micro has not loaded the lead system far enough into
the loading sequence to bring the lag system on. This
This message indicates the UNIT SWITCH is in the off message will be displayed on the lag system until the
position and not allowing the unit to run. loading sequence is ready for the lag system to start.
UNIT STATUS
SYS X COOLING DEMAND SHUTDOWN
DAILY SCHEDULE SHUTDOWN

This message indicates that either the daily or holiday This message is only displayed in the Normal Shut-
schedule programmed is keeping the chiller from run- down History display to indicate a capacity control
ning. shutdown.
UNIT STATUS
SYS X COMPRESSOR RUNNING
REMOTE CONTROLLED SHUTDOWN

This message indicates that either an ISN or RCC has This message indicates the system is running as a result
turned the chiller off and is not allowing it to run. of cooling demand.
UNIT STATUS
SYS X SHUTTING DOWN
FLOW SWITCH SHUTDOWN

This message indicates the flow switch is not allowing The compressor shutting down message indicates the
the chiller to run. There is a 1 second delay on this safe- respective system is ramping down in speed prior to
ty to assure the flow switch did not momentarily open. shutting off. This message is displayed after the soft-
ware run signal is disabled until the VSD notifies the
UNIT STATUS
Chiller Control Board the compressor is no longer run- 8
VSD COOLING SHUTDOWN
ning.
This message indicates the chiller is shutdown, but
running all the condenser fans, VSD glycol pump, and SYS X ANTI-RECYCLE TIMER = XXX SEC
VSD fan in an effort to bring the internal VSD ambient
temperature down to an acceptable level before allow- This message indicates the amount of time left on the
ing the chiller to start. respective system anti-recycle timer and the system is
unable to start until the timer times out.
SYS X REMOTE RUN CONTACT IS OPEN
SYS X DISCHARGE PRESSURE LIMITING
This message indicates the remote start/stop contact
between 2-15 or 2-16 of the 1TB terminal block is The Discharge Pressure Limiting message indicates
open. There is a 1 second delay on this safety to assure the discharge pressure load limit or discharge pressure
the remote contacts did not momentarily open. unloading is in effect.

SYS X SYSTEM SWITCH IS OFF SYS X SUCTION PRESSURE LIMITING

JOHNSON CONTROLS 241

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The Suction Pressure Limiting message indicates the The VSD Internal Ambient Temp Limiting message in-
suction pressure load limit or suction pressure unload- dicates the VSD internal ambient temp is high and load
ing is in effect. limit or unloading is in effect.

SYS X MOTOR TEMP LIMITING SYS X SOUND LIMITING

The Motor Temp Limiting message indicates the motor The sound limiting message indicates the sound load
temp load limit or motor temp unloading is in effect. limit is in effect based on the locally programmed
sound limit from the keypad. The sound limit must be
SYS X MOTOR CURRENT LIMITING activated for this function to operate.

The motor current limiting message indicates the mo- SYS X ISN SOUND LIMITING
tor current load limit or motor current unloading is in
effect. The ISN sound limiting message indicates the sound
load limit is in effect based on the ISN transmitted
SYS X PULLDOWN MOTOR CURRENT LIMITING sound limit setpoint. The sound limit must be activated
for this function to operate.
The pulldown motor current limiting message indicates
the pulldown motor current load limit or pulldown SYS X REMOTE SOUND LIMITING
motor current unloading is in effect based on the pro-
grammed setpoint. The Remote sound limiting message indicates the
sound load limit is in effect based on the Remote con-
SYS X ISN CURRENT LIMITING trolled sound limit setpoint. The setpoint may be offset
using a remote voltage or current signal. The sound
The ISN Current Limiting message indicates the motor limit option must be activated for this function to oper-
current load limit or motor current unloading is in ef- ate.
fect through the use of the YORKTalk setpoint.
Unit Safety (Fault) Status Messages
SYS X REMOTE MOTOR CURRENT LIMITING A complete listing of the unit safeties and the corre-
sponding status messages is provided on Page 245.
The Remote Motor Current Limiting message indicates System Safety (Fault) Status Messages
the motor current load limit or motor current unloading
is in effect through the use of the remote setpoint off- A complete listing of the system safeties and the cor-
set. The setpoint may be offset using a remote voltage responding status messages is provided on Page 246.
or a current signal. The remote current limit must be
VSD Safety (Fault) Status Messages
activated for this function to operate.
A complete listing of VSD safeties and the correspond-
SYS X VSD BASEPLATE TEMP LIMITING ing status messages is provided on Page 237.

Unit Warning Messages

The VSD Baseplate Temp Limiting message indicates
the VSD Baseplate temp is high and load limit or un- A complete listing of the unit warnings and the cor-
loading is in effect. responding status messages is provided on Page 243.

SYS X VSD INTERNAL AMBIENT TEMP LIMITING

242 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

UNIT DATA KEY

UNIT DATA
KEY

LD10605

General
The UNIT DATA key provides the user with displays The next key press displays the error in temperature
of unit temperatures, and unit related data. Displays between the actual leaving chilled liquid temperature
can be selected by repeatedly pressing the UNIT DATA and the setpoint temperature. The display also shows
key or the▲ or ▼ Arrow Keys. the rate of change of the chilled liquid temperature.

Unit Data Key Operation UNIT TEMP ERROR = XXX.X °F

RATE = XXX.X °F/M 8
The first key press displays Evaporator Leaving and
Return Chilled Liquid Temps. The next key press displays the system designated as
UNIT CHILLED LIQUID LEAVING = XXX.X °F the lead system and the Flow Switch status (ON or
ENTERING = XXX.X °F OFF).
UNIT LEAD SYSTEM NUMBER = X
The next key press of the UNIT DATA key or the ▼ FLOW SWITCH = XXX
(ARROW) key displays the ambient air temperature.
UNIT The next key press displays the status of the evapora-
OUTSIDE AMBIENT AIR TEMP = XXX.X °F tor pump and heater, where XXX is either ON or OFF.
UNIT EVAP PUMP RUN = XXX
The next key press will display the time remaining on
EVAP HEATER = XXX
the load and unload timers.
UNIT LOAD TIMER = XXX SEC
UNLOAD TIMER = XXX SEC

JOHNSON CONTROLS 243

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The next key press displays the status of Active Re- • RCC - A Remote Control Center is providing re-
mote Control. mote control. The chiller is in remote mode.
UNIT ACTIVE REMOTE CONTR0L = XXXXXX • ISN - YorkTalk via ISN. The chiller in remote
TYPE: RCC ISN CURR TEMP SOUND mode.

XXXXX is either ACTIVE or NONE. • CURR - Remote Current Limiting is enabled.

• TEMP - Remote Temperature Reset is enabled.
If no remote keys are active, the items on the second
line are all blanked out. Any remote items that are ac- • SOUND - Remote Sound Limiting is enabled.
tive will be displayed, while the inactive items will be
blanked out. The next key press displays the sound limit values as
set under the PROGRAM key by the Local, ISN, and
The types of remote control are listed below: the Remote Sound Limit Inputs. Any sound limits that
are inactive will display XXX instead of a numeric
• NONE - No remote control is actively controlling value.
the chiller; however, remote monitoring by a re-
mote device may still be active. UNIT SOUND LIMIT LOCAL = XXX %
ISN = XXX REMOTE = XXX %

244 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SYSTEM DATA KEYS 1 THROUGH 4

SYSTEM 1
DATA KEY

SYSTEM 2
DATA KEY

SYSTEM 3
DATA KEY
SYSTEM 4
DATA KEY

LD10605

General
The data keys provide the user with many displays of The next key press displays the suction temperature
individual system temperatures, pressures, and other and all of the calculated suction temperatures (satu-
operating data. These keys have multiple displays, rated suction and system superheat).
which can be seen by repeatedly pressing the SYSTEM
SYS 1 SUCTION TEMP = XXX.X °F
DATA or the ▲ or ▼ (ARROW) keys. An explanation
of each key and its messages is provided below.
SUPERHEAT = XXX.X SAT TEMP = XXX.X °F
8
The next key press displays the discharge temperature
System 1 Data Key Operation
and all of the calculated discharge temperatures (satu-
The SYSTEM 1 DATA key provides the user with ac- rated discharge and discharge superheat).
cess to System 1 operating parameters. The following
SYS 1 DISCHARGE TEMP = XXX.X °F
is a list of the data in the order in which it appears.
SUPERHEAT = XXX.X SAT TEMP = XXX.X °F
The first key press of the SYSTEM X DATA key dis-
plays all of the measured system pressures (oil, suc- The next key press displays the System 1 motor therm-
tion, and discharge). istor temperatures.
SYS 1 PRESSURES OIL = XXXX PSIG SYS 1 MOTOR TEMPS T1 = XXX.X °F
SUCTION = XXXX DISCHARGE = XXXX PSIG T2 = XXX.X °F T3 = XXX.X °F

The second key press of the SYSTEM DATA key or the If any motor temp sensor is being ignored,
▼ (DOWN ARROW) key displays all of the measured (selectable under Unit Set-up Mode),
system temperatures (oil, suction, and discharge). that sensor’s value will be displayed as
XXXXX.
SYS 1 TEMPERATURES OIL = XXX.X °F
SUCTION = XXX.X DISCHARGE = XXX.X °F

JOHNSON CONTROLS 245

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The next key press indicates the % of compressor load- The next key press displays the system run time in
ing and status of the economizer solenoid as deter- days, hours, minutes, and seconds.
mined by the operating frequency.
SYS 1 RUN TIME
SYS 1 COMPRESSOR SPEED = XXX.X % XX DAYS XX HOURS XX MINUTES XX SECONDS
ECONOMIZER SOLENOID = XXX
The next key press displays the status of several system
XXX indicates whether the economizer solenoid is ei- signals.
ther ON or OFF.
SYS 1 RUN SIGNALS RELAY = XXX
The next keypress displays the liquid level in the flash RUN PERM = XXX SOFTWARE = XXX
tank and an indicator of the % the Flash Tank Feed
Valve is open. XXX indicates either ON or OFF.

SYS 1 FLASH TANK LEVEL = XXX.X % System 2 through 4 Data Key Operation
FEED VALVE PERCENT OPEN = XXX.X %
These keys function the same as the SYSTEM 1 DATA
key except that it displays data for System 2 through 4.
The next key press displays the system suction super-
heat and an indicator of the % the Flash Tank Drain On a 2 compressor system, the SYSTEM 3 and SYS-
Valve is open. TEM 4 data keys will display the following messages:
SYS 1 SUCTION SUPERHEAT = XXX.X °F
SYS 3 DATA NOT AVAILABLE
DRAIN VALVE PERCENT OPEN = XXX.X %

The next key press displays the system fan stage and SYS 4 DATA NOT AVAILABLE
the status of the compressor heater.
SYS 1 CONDENSER FANS ON = X
COMPRESSOR HEATER = XXX

X equals the number of fans ON. XXX indicates either

the heater is ON or OFF.

246 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Sensor Displays
Table 19 on page 247 lists all the sensors attached
to the control board associated with system data keys.
The minimum and maximum values displayed on the
micro display are provided.
If values exceed the limits in the table, a < (less than)
or > (more than) sign will be display along with the
minimum or maximum value.

Table 19 - SENSOR MIN/MAX OUTPUTS

SENSOR TYPE MINIMUM MAXIMUM
Suction
Transducer 0.0 psig 125.0 psig
Pressure
Oil
Transducer 0.0 psig 275.0 psig
Pressure
Discharge
Transducer 0.0 psig 275.0 psig
Pressure
Flash Tank
Capacitance 0.0% 100 %
Level
Leaving Chilled 3Kohm
-19.1ºF 110.2ºF
Liquid Temp. Thermistor
Return Chilled 3Kohm
-19.1ºF 110.2ºF
Liquid Temp. Thermistor
Ambient Air 10Kohm
-4.6ºF 137.9ºF
Temp. Thermistor
Suction 3Kohm
-4.1ºF 132.8ºF
Temp. Thermistor
50Kohm
Oil Temp. 40.3ºF 302.6ºF
Thermistor
Discharge 50Kohm
40.3ºF 302.6ºF
Temp. Thermistor
Compressor 10Kohm
8
-30.0ºF 302.0ºF
Motor Temp. Thermistor

Remote Temp. 4–20 mA / 2–10 VDC

0% 100%
Reset 0–20 mA / 0–10 VDC

Remote 4–20 mA / 2–10 VDC

0% 100%
Current Limit 0–20 mA / 0–10 VDC
Remote 4–20 mA / 2–10 VDC
0% 100%
Sound Limit 0–20 mA / 0–10 VDC

JOHNSON CONTROLS 247

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

VSD DATA KEY

VSD
DATA KEY

LD10605

General
The VSD DATA key provides the user with displays of VSD COMP 1 = XXX AMPS = XXX %FLA
VSD temperatures, voltages, currents, and other oper-
COMP 2 = XXX AMPS = XXX %FLA
ating data. This key has multiple displays, which can
be seen by repeatedly pressing the VSD DATA or the For 3 and 4 compressor units only, the second key press
▲ or ▼ (ARROW) keys. An explanation of each mes- will display the following message for systems 1 and 3:
sage is provided below.
VSD COMP 1 = XXX AMPS = XXX %FLA
VSD Data Key Operation COMP 3 = XXX AMPS = XXX %FLA

The first VSD DATA key press displays the actual VSD For 3 and 4 compressor units only, the next key press
Output Frequency and Command Frequency. displays the compressor %FLA and currents for sys-
VSD FREQUENCYACTUAL = XXX.X HZ tems 2 and 4. 3 compressor units will have the 4th
COMMAND = XXX.X HZ compressor information blanked out.
VSD COMP 2 = XXX AMPS = XXX %FLA
The second key press of the VSD DATA key or the ▼
COMP 4 = XXX AMPS = XXX %FLA
(ARROW) key displays the compressor % FLA and
“calculated” currents in amps for systems 1 and 2. The
“calculated” currents are approximate and some error
can be expected. Also keep in mind that measuring in-
verter PWM current is difficult and meter error can be
significant.

248 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The next key press displays the current limit values The next key press displays the state of the Precharge
set locally on the panel under the PROGRAM key, re- signal, where XXX is either ON or OFF. The first dis-
motely by an ISN, and remotely by the Current Limit play is for 2 and 3 compressor units, the second display
input. Any current limits that are inactive will display shown is for 4 compressor units where Precharge 1 is
“XXX” instead of a numeric value. for compressors 1 and 3 DC Bus and Precharge 2 is for
compressors 2 and 4 DC Bus.
VSD CURRENT LIMIT LOCAL = XXX %FLA
ISN = XXX REMOTE = XXX %FLA
VSD PRECHARGE SIGNAL = XXX

The next key press displays DC Bus voltage for 2 and 3

compressor units. On 4 compressor units, the 2nd mes- VSD PRECHARGE 1 SIGNAL = XXX
sage will apply, since two DC Bus voltages are present VSD PRECHARGE 2 SIGNAL = XXX
(Systems 1/3 and 2/4).
The next key press displays the setting of the VSD’s
VSD DC BUS VOLTAGE = XXX VDC 105% FLA overload potentiometer for Compressor
#1 and 2. The settings are determined by the adjust-
ment of the overload potentiometers on the VSD Logic
VSD DC BUS VOLTAGES BUS 1 = XXX VDC
Board. These pots are factory set and should not re-
BUS 2 = XXX VDC
quire changing unless the circuit board is replaced. See
The next key press displays the Control Panel/VSD In- Table 39 on page 315 for factory settings.
ternal Ambient Temperature and VSD Cooling Pump/ VSD COMP 1 MOTOR OVERLOAD = XXX AMPS
Fan Status. YYY will indicate ON or OFF. COMP 2 MOTOR OVERLOAD = XXX AMPS
VSD INTERNAL AMBIENT TEMP = XXX.X °F
The next key press displays the setting of the VSD’s
COOLING SYSTEM STATUS = YYY
105% FLA potentiometer for Compressor #3 and #4 (3
The next key press displays the IGBT highest baseplate and 4 compressor units only). The second line will be
temperature for 2 and 3 compressor units. 4 compres- blanked out on 3 compressor units.
sor units display temperatures for Systems 1/3 (T1) VSD COMP 3 MOTOR OVERLOAD = XXX AMPS
and Systems 2/4 (T2). COMP 4 MOTOR OVERLOAD = XXX AMPS
VSD IGBT BASEPLATE TEMPS T1 = XXX °F
T2 = XXX °F

JOHNSON CONTROLS 249

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

OPERATING HOURS / START COUNTER KEY

OPERATING HOURS/
START COUNTER
KEY

LD10605

Compressor operating hours and compressor starts are

displayed with a single key press. The maximum value
for both hours and starts is 99,999, at which point they
will roll over to 0. A single display is available under
this key and is displayed below. On 2 and 3 compres-
sor units, the data and compressor designators for com-
pressors not present are blanked out.
HOURS 1=XXXXX, 2=XXXXX, 3=XXXXX, 4=XXXXX
START 1=XXXXX, 2=XXXXX, 3=XXXXX, 4=XXXXX
`

250 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

HISTORY KEY

HISTORY
KEY

LD10605

History Key Operation Normal Shutdowns History

The HISTORY key provides the user access to many If the NORMAL SHUTDOWNS History is selected,
unit and system operating parameters captured at the the following screen will be displayed:
instant a unit or system safety (fault) shutdown occurs.
NORM HIST XX 18-JUN-20004 10:34:58 AM
The history buffer will also capture system data at the
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
time of normal shutdowns such as cycling shutdowns.
When the HISTORY key is pressed the following XX is the normal shutdown number. The display will
screen is displayed: provide date and time of the shutdown and the reason
HISTORY CHOOSE HISTORY TYPE for the cycling shutdown (YYY….). 8
◄ ►XXXXXXXXXXXXXXXXXXXXXXXXXXXX
The operator can view any of the stored 20 single dis-
The ◄ and ► (ARROW) keys allow choosing be- play normal shutdown history buffers. History buffer
tween NORMAL SHUTDOWNS and FAULT SHUT- number 1 provides the most recent shutdown informa-
DOWNS. “Fault” shutdowns provide information on tion and buffer number 20 is the oldest safety shutdown
safety shutdowns, while “Normal” shutdowns provide information saved. The ◄ and ► (ARROW) keys allow
chiller cycling information on temperature (demand), scrolling between each of the history buffers. The ►
cycling, remote, system switch, etc., shutdowns that (ARROW) key scrolls to the next normal history shut-
are non-safety related shutdowns. Once the selection down and the ◄ (ARROW) key scrolls to the previous
is made, the  (ENTER) key must be pressed to enter normal history shutdown.
the selection. The following display will typically be displayed on a
normal shutdown due to shutdown on lack of cooling
demand.
NORM HIST XX 18-JUN-20004 10:34:58 AM
SYS X COOLING DEMAND SHUTDOWN

JOHNSON CONTROLS 251

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Fault Shutdowns History Status Fault Type

If the FAULT SHUTDOWNS History is selected, the SYS X COMPRESSOR RUNNING
following screen will be displayed: SYS X YYYYYYYY HIGH DIFF OIL PRESSURE

FAULT HIST XX 18-JUN-20004 10:34:58 AM This message indicates the type of system fault. This
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY screen is skipped if a UNIT Fault caused the shutdown.
XX is the FAULT HISTORY shutdown number. The Unit Fault Type
display will provide the date, time, and a description of UNIT FAULT
the specific type of fault that occurred (YYY….).
LOW AMBIENT TEMP
The operator can view any of the stored 10 fault history
buffers. History buffer number 1 provides the most re- This message indicates the type of unit fault. This
cent safety shutdown information and buffer number screen is skipped if a SYSTEM Fault caused the shut-
10 is the oldest safety shutdown information saved. down.
The ◄ and ► arrow keys allow scrolling between
All Fault Data
each of the FAULT HIST buffers 1 through 10. The ▲
(UP) and ▼ (DOWN) arrow keys can be used to scroll FAULT HIST XX ALL FAULTS ZZ OF WW
forwards and backwards through the data in a specific YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
history buffer, once it is displayed.
The ALL FAULT display indicates whether a fault oc-
There is a large amount of data provided under each curred while the unit is shutting down on another fault.
history. Rather than scroll sequentially through the data
If a control panel fault occurred while the unit is shut-
in a history, which is possible using the ▼ arrow key,
ting down on a VSD fault before it is reset, the control
the use of a combination of the ◄, ►, ▲‚ and ▼ ar-
panel fault is an ALL FAULT of the VSD fault.
row keys allows fast scrolling to specific data the user
desires to view. To use this feature, the user needs to If another VSD fault occurs while the unit is shutting
be aware the ◄ and ► arrow keys allow scrolling to down on a VSD fault, the next VSD fault will be regis-
the top of the data subgroups. Once a specific history tered as an ALL FAULT of the VSD fault.
is selected, the history data is divided under the sub-
groups of Unit Data, VSD Data, System Data, Hours/ If a VSD fault occurs during the ramp down shutdown
Starts, Setpoints, Options, and Program data. The ◄ of a control panel fault, the VSD fault is registered as a
and ► arrow keys allow moving to the first display new fault, not an ALL FAULT
under the next or previous subgroup at any time. Once
XX is the history number, YYY is the ALL FAULT
the first display of a subgroup is displayed, the ▲‚ and
description, ZZ is the ALL FAULT number and WW
▼ arrow keys allow scrolling though the data in the
is the total number of All Faults for the current his-
subgroup. The ▼ arrow key allows scrolling though
tory. Sometimes, multiple faults may occur during the
the data from first to last. When the last piece of data
shutdown and multiple displays will be observed when
is displayed, the next press of the ▼ arrow key scrolls
scrolling through the data using the ▼ arrow. In most
to the first piece of data in the next subgroup. The ▲
cases, the ALL FAULT display will indicate NONE.
arrow key allows going to the previous display.
The ALL FAULT display will only indicate the cause
Listed below is a description of the fault data displays of the fault. No additional chiller information will be
and their meaning. Data will be displayed in a specific displayed under the ALL FAULT, since a snapshot of
order starting with the Status Display (System Faults all chiller data was taken at the time of the first fault.
only), Fault Display, All Fault Display, Unit Data, VSD
Data, System Data, Operating Hours/Starts, Setpoints,
Options, and Program Values at the time of the fault.

252 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Unit Data Active Remote Control Status

Evaporator Leaving and Return Chilled Liquid UNIT ACTIVE REMOTE CONTR0L = XXXXXX
Temps
This message indicates the leaving and entering chilled This message indicates whether the system was operat-
liquid temperatures at the time of the fault. ing under Active Remote Control (RCC, ISN, LOAD,
TEMP, or SOUND) or standard control (NONE) at the
Ambient Air Temperature time of the fault.
UNIT
UNIT SOUND LIMIT LOCAL = XXX %
OUTSIDE AMBIENT AIR TEMP = XXX.X °F
ISN = XXX REMOTE = XXX %
This message indicates the ambient air temperature at
the time of the fault. This message indicates that sound limiting was in ef-
fect, the amount, and whether it was local or remotely
Load / Unload Timers limited.
UNIT LOAD TIMER = XXX SEC
VSD Data
UNLOAD TIMER = XXX SEC
VSD Actual and Command Frequency
This message indicates remaining time on the load and VSD FREQUENCY ACTUAL = XXX.X HZ
unload timers at the time of the fault. COMMAND = XXX.X HZ

Chilled Liquid Temperature Error and Rate of This message indicates the VSD actual operating fre-
Change quency and the command frequency at the time of the
UNIT TEMP ERROR = XXX.X °F fault. Actual and command may not match due to load/
RATE = XXX.X °F/M unload timers, limitation of 1 Hz per load/unload incre-
ment, and to allowable acceleration/deceleration of the
This message indicates the temperature error between motor.
the actual and the programmed setpoint at the time of
the fault and the rate of temperature change. VSD COMP 1 = XXX AMPS = XXX %FLA
COMP 2 = XXX AMPS = XXX %FLA
Programmed Lead System Selection and
Flow Switch Status Compressor AMPS and %FLA
UNIT LEAD SYSTEM NUMBER = X The message indicates the compressor %FLA and cur-
FLOW SWITCH = XXX rents for systems 1 and 2 at the time of the fault.
8
This message indicates the designated lead system at COMP 1 = XXX AMPS = XXX %FLA
the time of the fault and whether the flow switch was COMP 3 = XXX AMPS = XXX %FLA
ON (Closed) or OFF (Open) at the time of the fault.
COMP 2 = XXX AMPS = XXX %FLA
Evaporator Pump and Evaporator Heater COMP 4 = XXX AMPS = XXX %FLA
Status
These messages indicate the compressor %FLA and
UNIT EVAP PUMP RUN = XXX
currents for systems 3 and 4 at the time of the fault. For
EVAP HEATER = XXX 3 compressor units, the #4 compressor information is
blanked out.
This message indicates the status of the evaporator
pump and the evaporator heater at the time of the fault.
XXX indicates ON or OFF.

JOHNSON CONTROLS 253

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

VSD Current Limit Compressor #1 and #2, 105% FLA Motor

VSD CURRENT LIMIT LOCAL = XXX %FLA Overload Current Setting
ISN = XXX REMOTE = XXX %FLA VSD COMP 1 MOTOR OVERLOAD = XXX AMPS
COMP 2 MOTOR OVERLOAD = XXX AMPS
This message displays the current limit values as set
locally, by an ISN, or a remote current limiting input at This message displays the setting of the VSD’s 100%
the time of the fault. FLA potentiometer for Compressor #1 and #2 at the
time of the fault.
DC BUS Voltage
Compressor #3 and #4, 105% FLA Current
VSD DC BUS VOLTAGE = XXX VDC
Setting
COMP 3 MOTOR OVERLOAD = XXX AMPS
DC BUS VOLTAGES BUS 1 = XXX VDC COMP 4 MOTOR OVERLOAD = XXX AMPS
BUS 2 = XXX VDC
This message displays the setting of the
This message displays the DC Bus voltage at the time
of the fault. On 4 compressor units, the 2nd message VSD’s 100% FLA potentiometer for Compressor #3
will apply since two DC Bus voltages are present (1/3 and #4 at the time of the fault.
and 2/4) at the time of the fault.
System Data
VSD Internal Ambient Temp
System #1 Pressures
VSD INTERNAL AMBIENT TEMP = XXX.X °F
SYS 1 PRESSURES OIL = XXXX PSIG
COOLING SYSTEM STATUS = YYY
SUCTION = XXXX DISCHARGE = XXXX PSIG

This message displays the VSD/Microprocessor inter-

This message displays all of the measured system pres-
nal ambient cabinet temperature and the cooling sys-
sures (oil, suction, and discharge) at the time of the
tem status (ON or OFF) at the time of the fault.
fault.
IGBT Baseplate Temperature
System # 1 Measured Temperatures
VSD IGBT BASEPLATE TEMPS T1 = XXX °F
SYS 1 TEMPERATURES OIL = XXX.X °F
T2 = XXX °F
SUCTION = XXX.X DISCHARGE = XXX.X °F

This message displays the IGBT highest baseplate

This message displays all of the measured system tem-
temperature for 2 and 3 compressor units at the time of
peratures (oil, suction, and discharge) at the time of the
the fault. 4 compressor units display temperatures for
fault.
1/3 (T1) and 2/4 (T2).
System #1 Measured Suction Temperature
Precharge Signal Status and VSD Cooling
and Calculated SAT Suction Temperature and
Status
Superheat
VSD PRECHARGE SIGNAL = XXX SYS 1 SUCTION TEMP = XXX.X °F
SUPERHEAT = XXX.X SAT REMP = XXX.X °F
VSD PRECHARGE 1 SIGNAL = XXX
This message displays all of the calculated suction
PRECHARGE 2 SIGNAL = XXX
temperatures (saturated suction and system superheat)
This display provides the state of the precharge sig- at the time of the fault as well as measured suction tem-
nal, where Precharge 1 and Precharge 2 is either ON or perature.
OFF at the time of the fault. Precharge 2 is only used
on 4 compressor units.

254 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

System #1 Calculated Discharge System #1 Fan Stage and Compressor Heater

Temperatures Status
SYS 1 DISCHARGE TEMP = XXX.X °F SYS 1 CONDENSER FANS ON = XXX
SUPERHEAT = XXX.X SAT REMP = XXX.X °F COMPRESSOR HEATER = XXX

This message displays all of the calculated discharge This message displays the actual # of system fans on,
temperatures (saturated discharge and discharge super- and the status of the compressor heater at the time of
heat) at the time of the fault as well as measured dis- the fault. The fan display will show the number of fans
charge temperature. operating while the compressor heater status will indi-
cate either ON or OFF.
System #1 Motor Temperatures
SYS 1 MOTOR TEMPS T1 = XXX.X °F Compressor #1 Run Time
T2 = XXX.X T3 = XXX.X °F SYS 1 RUN TIME
XX DAYS XX HOURS XX MINUTES XX SECONDS
This message displays the System 1 motor thermistor
temperatures at the time of the fault. This message displays the system run time since the
last start in days, hours, minutes, and seconds at the
System #1 Compressor Speed and time of the fault.
Economizer Solenoid Status
SYS 1 COMPRESSOR SPEED = XXX.X % System #1 Run Signals
ECONOMIZER SOLENOID = XXX SYS 1 RUN SIGNALS RELAY = XXX
RUN PERM = XXX SOFTWARE = XXX
This message indicates the compressor speed and sta-
tus of economizer solenoid at the time of the fault. The This message displays the System Run Signal Relay
economizer status will be indicated as either ON or (Relay Output Board) status, Run Permissive Input
OFF. status, and the Internal Software (microprocessor com-
mand) ON/OFF Start status. The status of each will in-
System #1 Flash Tank Level and Feed Valve dicate either ON or OFF.
% Open
SYS 1 FLASH TANK LEVEL = XXX.X % System 2 through 4 Data
FEED VALVE PERCENT OPEN = XXX.X % Data for the remaining systems 2 through 4 at the time
of the fault is displayed in the same sequence as the
This message displays the liquid level in the flash tank system #1 data.
and indicates the % the Flash Tank Feed Valve is open
at the time of the fault.
8
Compressor Operating Hours and Starts
HOURS 1=XXXXX, 2=XXXXX, 3=XXXXX, 4=XXXXX
System #1 Suction Superheat and Flash Tank
START 1=XXXXX, 2=XXXXX, 3=XXXXX, 4=XXXXX
Drain Valve % Open
SYS 1 SUCTION SUPERHEAT = XXX.X °F This message displays compressor operating hours and
DRAIN VALVE PERCENT OPEN = XXX.X % compressor starts at the time of the fault. On 3 and 4
compressor units, the data and compressor designators
This message displays the system suction superheat for compressors not present will be blanked out.
and indicates the % the Flash Tank Drain Valve is open
at the time of the fault.

JOHNSON CONTROLS 255

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Chilled Liquid Setpoint Cooling Setpoints

SETPOINTS When Remote Control Mode is selected, control of the
LOCAL COOLING SETPOINT = XXX.X °F Chilled Liquid Setpoint is from a remote device such
as an ISN/BAS controller.
This message displays the programmed cooling
OPTIONS DISPLAY UNITS
setpoint at the time of the fault.
◄► XXXXXXXXXXXXXXXXXXXX
SETPOINTS
LOCAL CONTROL RANGE = +/- X.X °F Display Units Mode

This message displays the programmed Control Range This message indicates whether SI (°C, barg) or Impe-
at the time of the fault. rial units (°F, psig) was selected at the time of the fault.
OPTIONS LEAD / LAG CONTROL MODE
Remote Setpoint and Range ◄► XXXXXXXXXXXXXXXXXXXXX
SETPOINTS REMOTE SETPOINT = XXX.X °F
REMOTE CONTROL RANGE = +/- X.X °F System Lead/Lag Control Mode

This message displays the remote setpoint and Control This message indicates the type of lead lag control se-
Range at the time of the fault. lected at the time of the fault. Five choices are avail-
able:
Maximum Remote Temperature Setpoint
• Automatic
SETPOINTS
MAXIMUM REMOTE TEMP RESET = XXX.X °F • Sys 1 Lead
• Sys 2 Lead
This message displays the maximum remote reset pro-
grammed at the time of the fault. • Sys 3 Lead
• Sys 4 Lead.
Options
The default mode will be AUTOMATIC.
Display Language
OPTIONS DISPLAY LANGUAGE Remote Temperature Reset
◄► XXXXXXXXXXXXXXXXXXXX
One of the 5 messages below indicates whether remote
This message displays the language selected at the time temperature reset was active or disabled at the chiller
of the fault. keypad at the time of the fault. If active, the type of
reset signal selected is indicated. If the option is not
Chilled Liquid Cooling Mode factory enabled, the option will not appear.
OPTIONS CHILLED LIQUID COOLING MODE OPTIONS REMOTE TEMP RESET INPUT
◄► WATER COOLING ◄► DISABLED

This message displays the chilled liquid temperature OPTIONS REMOTE TEMP RESET INPUT
mode (water or glycol) selected at the time of the fault. ◄► 0.0 TO 10.0 VOLTS DC

Local / Remote Control Mode OPTIONS REMOTE TEMP RESET INPUT

OPTIONS CHILLED LIQUID COOLING MODE ◄► 2.0 TO 10.0 VOLTS DC
◄► GLYCOL COOLING
OPTIONS REMOTE TEMP RESET INPUT
◄► 0.0 TO 20.0 MILLIAMPS
This message indicates whether Local or Remote Con-
trol Mode was selected at the time of the fault. OPTIONS REMOTE TEMP RESET INPUT
OPTIONS LOCAL / REMOTE CONTROL MODE ◄► 4.0 TO 20.0 MILLIAMPS
◄► XXXXXXXXXXXXXXXXXXXXX

256 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Low Ambient Temp Cutout Low Leaving Chilled Liquid Temp Cutout
OPTIONS LOW AMBIENT TEMP CUTOUT PROGRAM
◄► XXXXXXXXXXXXXXXXXXXX LEAVING LIQUID TEMP CUTOUT = XXX.X °F

This message indicates whether the low ambient cutout This message displays the low leaving Chilled liquid
was enabled or disabled at the time of the fault. temperature cutout programmed at the time of the fault.

Remote Current Reset Motor Current Limit

OPTIONS REMOTE CURRENT LIMIT INPUT PROGRAM
◄► DISABLED MOTOR CURRENT LIMIT= XXX %FLA

OPTIONS REMOTE CURRENT LIMIT INPUT This message indicates the motor current limit pro-
◄► 0.0 TO 10.0 VOLTS DC grammed at the time of the fault.
OPTIONS REMOTE CURRENT LIMIT INPUT Pulldown Current Limit
◄► 2.0 TO 10.0 VOLTS DC
PROGRAM
OPTIONS REMOTE CURRENT LIMIT INPUT PULLDOWN CURRENT LIMIT= XXX %FLA
◄► 0.0 TO 20.0 MILLIAMPS
This message indicates the pulldown current limit pro-
OPTIONS REMOTE CURRENT LIMIT INPUT grammed at the time of the fault.
◄► 4.0 TO 20.0 MILLIAMPS
Pulldown Current Limit Time
This message indicates whether remote current reset PROGRAM
was active or disabled at the chiller keypad at the time PULLDOWN CURRENT LIMIT TIME = XXX MIN
of the fault and if active, the type of reset signal select-
ed. One of the following messages will be indicated: This message indicates the pulldown current limit time
DISABLED (no signal) programmed at the time of the fault.

• 0 VDC to 10 VDC Suction Superheat Setpoint

• 2 VDC to 10 VDC PROGRAM
SUCTION SUPERHEAT SETPOINT = XXX.X °F
• 0 mA to 20 mA
• 4 mA to 20 mA. This message indicates the suction superheat setpoint
programmed at the time of the fault.
If the option is not factory enabled, the option will not 8
appear. Unit ID Number
PROGRAM
Program Values REMOTE UNIT ID NUMBER =X
Suction Pressure Cutout
This indicates the unit ID # programmed at the time of
PROGRAM
the fault.
SUCTION PRESSURE CUTOUT = XXX.X PSIG
Sound Limit Setpoint
This message indicates the he suction pressure cutout
PROGRAM
programmed at the time of the fault.
SOUND LIMIT SETPOINT = XXX %
Low Ambient Cutout
This indicates the sound limit setpoint programmed at
PROGRAM
the time of the fault, if the sound limit option is activat-
LOW AMBIENT TEMP CUTOUT = XXX.X °F
ed at the factory. If the option is not factory activated,
the display will not appear.
This message displays the low ambient temp cutout
programmed at the time of the fault.

JOHNSON CONTROLS 257

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SETPOINTS KEY

SETPOINTS
KEY

LD10605

Setpoints Key Operation

Cooling setpoints and ranges may be programmed by Pressing the SETPOINTS key or the ▼ (ARROW) key
pressing the SETPOINTS key. The first setpoint en- a third time will display the remote setpoint and cool-
try screen will be displayed as shown below. The first ing range. This display automatically updates about
line of the display will show the chiller default (DEF), every 2 seconds. This remote setpoint message is show
minimum acceptable value (LO) and maximum ac- below:
ceptable value (HI). The second line shows the actual
SETPOINTS REMOTE SETPOINT = XXX.X °F
programmed value. Table 20 on page 259 also shows
REMOTE CONTROL RANGE = +/- X.X °F
the allowable ranges for the cooling setpoints and Con-
trol Ranges. Note that the Imperial units are exact val- If there is no remote setpoint being utilized, the remote
ues while the Metric units are only approximate. setpoint value will be displayed as XXXXXX and the
SETPOINTS ◄DEF XXXXX LO XXXXX HI XXXXX remote Control Range will display XXX.
LOCAL COOLING SETPOINT = XXX.X °F
Pressing the SETPOINTS key or the Arrow key a
Pressing the SETPOINTS key a second time or the ▼ fourth time will bring up a screen that allows the Maxi-
(ARROW) key will display the leaving chilled liquid mum Remote Temperature Reset to be programmed.
Control Range, default, and low/high limits. This message is show below:
SETPOINTS ◄DEF XXXXX LO XXXXX HI XXXXX
SETPOINTS ◄DEF XXXXX LO XXXXX HI XXXXX
MAXIMUM REMOTE TEMP RESET = XXX.X °F
LOCAL CONTROL RANGE = +/- X.X °F

258 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The values displayed under each of the key presses The ▲ (ARROW) key allows scrolling back through
may be changed by keying in new values and pressing the setpoints displays.
the  (ENTER) key to store the new value into mem-
ory. Where more than one value may be keyed in on a The minimum, maximum, and default values allowed
display, a portion of the data that does not need updat- under the SETPOINTS key are provided in Table 20
ing may be skipped by pressing the  (ENTER) key. on page 259.
The  (ENTER) key must also be pressed after the
last value in the display to store the data into memory.

Table 20 - SETPOINT LIMITS

PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT
40.0°F 60.0°F 44.0°F
Water Cooling
4.4°C 15.6°C 6.7°C
Leaving Chilled Liquid Setpoint
15.0°F 70.0°F 44.0°F
Glycol Cooling
-9.4°C 15.6°C 6.7°C
1.5°F 2.5°F 2.0°F
Leaving Chilled Liquid Control Range -
0.8°C 1.4°C 1.1°C
2°F 40°F 20°F
Max. Remote Temperature Reset -
1°C 22°C 11°C

JOHNSON CONTROLS 259

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

PROGRAM KEY

PROGRAM
KEY

LD10605

Program Key Operation

Various operating parameters are programmable by the Pressing the  (ENTER) key again will display the
user. These are modified by pressing the PROGRAM first programmable selection.
key and then the  (ENTER) key to enter Program
Mode. A listing of the limits of the programmable val- Suction Pressure Cutout
ues is found below. Note that the Imperial units are ex- PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
act values, while Metric units are only approximate. SUCTION PRESSURE CUTOUT = XXX.X PSIG

The ▲ and ▼ (ARROW) keys are used to scroll The suction pressure cutout is protects the chiller from
through the user programmable values. A value may be a low refrigerant condition. It also helps protect from
changed by keying in the new value and pressing the  a freeze-up due to low or no chilled liquid flow. How-
(ENTER) key to store the new value in memory. The ever, it is only a back-up for a flow switch and cannot
cursor will be displayed on the screen when a number protect against an evaporator freeze under many condi-
key is pressed. The first line of each message will indi- tions. This cutout is programmable and should gener-
cate the chiller default (DEF) value), lowest acceptable ally be programmed for 24 psig (1.65 barg) for chilled
programmable value (LO), and highest acceptable pro- water cooling.
grammable value (HI). The user programmable value
is programmed on in the second line of the message. The cutout is programmable between 24.0 psig and
36.0 psig (1.65 barg and 2.48 barg) in the Water Cool-
When the PROGRAM key is first pressed, the following mode and 5.0 psig and 36.0 psig (0.34 barg and
ing display will appear indicating the user is in the pro- 2.28 barg) in the Glycol Cooling mode. The default
gram mode: value for both modes will be 24.0 psig (1.65 barg).
PROGRAM MODE XXXX
PRESS ENTER KEY TO CONTINUE

260 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Low Ambient Cutout Pulldown Current Limit Time

PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
LOW AMBIENT TEMP CUTOUT = XXX.X °F PULLDOWN CURRENT LIMIT TIME = XXX MIN

The low ambient temp cutout allows programming the The pulldown current limit time is programmable.
outdoor temperature at which it is desired to shut down This allows the microprocessor to limit a system on
the chiller to utilize other methods of cooling. pulldown limiting for a defined period of time for the
purpose of peak time energy savings. The pulldown
The cutout is programmable between –2.0°F (-18.9°C) limit point is programmable from 0 to 255 with a de-
and 50°F (10.0°C) with a 25°F (-3.9°C) default. fault of 0 Min.
Low Leaving Liquid Temp Cutout Suction Superheat Setpoint
PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
LEAVING LIQUID TEMP CUTOUT = XXX.X °F
SUCTION SUPERHEAT SETPOINT = XXX.X °F

The leaving chilled liquid temp cutout is programmed The suction superheat setpoint is programmable from
to avoid freezing the evaporator due to excessively low 8.0°F to 12.0°F (4.4°C to 8.3°C) with a 10.0°F (5.6°C)
chilled liquid temperatures. The cutout is automatically default. Typically the superheat control will be pro-
set at 36°F (2.2°C) in the Water Cooling mode and is grammed for 10.0°F. Higher superheats between 10
programmable in the Glycol Cooling mode. In the Gly- and 12°F will reduce the risk of liquid carry over and
col Cooling Mode, the cutout is programmable from are preferred by some users.
11.0°F to 36.0°F (-11.7°C to 2.2°C) with a default of
36.0°F (2.2°C). Unit ID Number
PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
Motor Current Limit
REMOTE UNIT ID NUMBER = X
PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
MOTOR CURRENT LIMIT = XXX % FLA For purposes of remote communications, multiple
chillers may be connected to an RS-485 communica-
The motor current limit %FLA is programmable. This tions bus. To allow communications to each chiller, a
allows the microprocessor to limit a system before it chiller ID number may be programmed into memory.
faults on high current. Typically, the limit point is set at On a single chiller application, the value will be “0”.
100%. The unload point is programmable from 30% to
100% with a default of 100%.

Pulldown Current Limit 8

PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX
PULLDOWN CURRENT LIMIT = XXX % FLA

The pulldown current limit %FLA is programmable.

This allows the microprocessor to limit a system on
pulldown limiting for the purpose of peak time energy
savings. Typically, the limit point is set at 100%. The
pulldown limit point is programmable from 30% to
100% with a default of 100%. Be aware when using
pulldown motor current limit, the chiller may not be
able to load to satisfy temperature demand

JOHNSON CONTROLS 261

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Sound Limit Setpoint Default Values

PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX A listing of the low limits, high limits, and default
SOUND LIMIT SETPOINT = XXX % values for each of the programmable values is noted
in each display and can be found in Table 21 on page
The sound limit setpoint is programmable from 0% to 262. Note that the Imperial units are exact values
100% with a 0% default. 0% allows operating up to the while the Metric units are only approximate.
full speed capability of the unit with no sound limiting.
Typically the sound limit control setting will be pro-
grammed for 0 % unless sound limiting is utilized on
the chiller. Sound limiting will only permit the unit to
run to a frequency less than the maximum speed capa-
bility of the unit. Programming a value of 1% would be
the minimum sound limiting that can be programmed
and 100% will be the maximum. 100% will only allow
the unit speed to operate at the minimum frequency.
Usually, the sound limit % will be programmed some-
where between 0% and 100% according the limiting
needed to satisfy the sound requirements of the site.
Typically, sound limiting will be utilized in areas sensi-
tive to noise during night-time hours. The sound limit
display will only be present if the sound limit option is
programmed at the factory.

Table 21 - PROGRAMMABLE OPERATING PARAMETERS

PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT
Water 24.0 psig 36.0 psig 24.0 psig
Cooling 1.65 bar 2.48 bar 1.65 bar
Suction Pressure Cutout
Glycol 5.0 psig 36.0 psig 24.0 psig
Cooling 0.34 bar 2.48 bar 1.65 bar
-2°F 50.0°F 25.0°F
Low Ambient Temp. Cutout -
-18.9°C 10.0°C 2.2°C
Water - - 36.0°F
Cooling - - 2.2°C
Leaving Chilled Liquid Temp. Cutout
Glycol 11.0°F 36.0°F 36.0°F
Cooling -11.7°C 2.2°C 2.2°C
Motor Current Limit - 30% 103% 103%
Pulldown Motor Current Limit - 30% 100% 100%
Pulldown Motor Current Limit Time - 0 min 255 min 0 min
8.0°F 12.0°F 10.0°F
Suction Superheat Setpoint -
4.4°C 6.6°C 5.6°C
Unit ID Number - 0 7 0
Sound Limit
Sound Limit Setpoint 0% 100% 0%
Option Enabled

262 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

OPTIONS KEY

OPTIONS
KEY

LD10605

Options Key Operation Chilled Liquid Cooling Mode Selection

The OPTIONS key provides the user with a display of The Chilled liquid cooling mode can be selected for
unit configuration and the capability to modify the con- Water Cooling or low temperature Glycol Cooling.
figuration. These options can only be viewed under the
OPTIONS CHILLED LIQUID COOLING MODE
OPTIONS key. To view the current options settings,
◄► XXXXXXXXXXXXXXXXXX
press the OPTIONS key. Each press of the OPTIONS
key or press of the ▲ or ▼ (ARROW) keys will scroll When Water Cooling is chosen, the chilled liquid tem-
to the next option setting. The ◄ and ► (ARROW) perature setpoint can only be programmed from 40°F
keys allow changing the option choices. The  (EN- 8
to 70°F
TER) key must be pressed after a selection is made to
save the change in memory. OPTIONS CHILLED LIQUID COOLING MODE
◄► WATER COOLING
An explanation of each option message is provided be-
low. When Glycol Cooling is chosen, the chilled liquid
temperature setpoint can be programmed from 10°F to
Display Language Selection 70°F.
The display language can be selected for English, OPTIONS CHILLED LIQUID COOLING MODE
Dutch, German, Italian, and Chinese
◄► GLYCOL COOLING
OPTIONS DISPLAY LANGUAGE
◄► XXXXXXXXXXXXXXXXXX The default Chilled Liquid Mode will be WATER.

The default language will be English.

JOHNSON CONTROLS 263

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Local / Remote Control Mode Selection System Lead/Lag Control Mode Selection
Local or Remote Control Mode allows the user to se- The operator may select the type of lead/lag control
lect the chilled liquid temperature control mode. desired.
OPTIONS LOCAL / REMOTE CONTROL MODE OPTIONS LEAD / LAG CONTROL MODE
◄► XXXXXXXXXXXXXXXXXX ◄► XXXXXXXXXXXXXXXXXX

When LOCAL CONTROL mode is selected, chilled In most cases, automatic lead/lag will be selected.
liquid control is from the keypad of the chiller. In local When automatic lead/lag is selected, the microproces-
mode, a remote device can read system data, but not sor will attempt to balance run time by switching the
reset operating parameters. lead compressor whenever all compressors are shut
off. If a compressor is not able to run when the mi-
OPTIONS LOCAL / REMOTE CONTROL MODE
croprocessor attempts a start, the microprocessor will
◄► LOCAL CONTROL
select another compressor in an effort to control chilled
When REMOTE CONTROL mode is selected, control liquid temperature. Manual lead/lag allows selecting a
of the chilled liquid setpoint is from a remote device specific compressor to be the lead. If #2 is selected as
such as an ISN/BAS controller. the lead in a 3 compressor chiller, the sequence will be
2, 3, and 1.
OPTIONS LOCAL / REMOTE CONTROL MODE
OPTIONS LEAD / LAG CONTROL MODE
◄► REMOTE CONTROL
◄► AUTOMATIC
The default mode will be LOCAL.
The default mode will be AUTOMATIC.
Display Units Selection
Lag selections of individual systems will appear as:
Imperial or SI display units may be selected for data
OPTIONS LEAD / LAG CONTROL MODE
display.
◄► MANUAL SYS 1 LEAD
OPTIONS DISPLAY UNITS
◄► XXXXXXXXXXXXXXXXXX OPTIONS LEAD / LAG CONTROL MODE
◄► MANUAL SYS 2 LEAD
The user may select system operating temperatures and
OPTIONS LEAD / LAG CONTROL MODE
pressures to be displayed in either SI (°C, Barg) or Im-
perial units (°F, PSIG). ◄► MANUAL SYS 3 LEAD

OPTIONS DISPLAY UNITS SYSTEM 3 LEAD may be selected only on 3 and 4

◄► IMPERIAL compressor units.

OPTIONS DISPLAY UNITS OPTIONS LEAD / LAG CONTROL MODE

◄► SI ◄► MANUAL SYS 4 LEAD

The default mode is IMPERIAL. SYSTEM 4 LEAD may be selected only on 4 compres-
sor units.

264 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Remote Temperature Reset Selection

Remote temperature reset from an external source may The default setting for Remote Current Reset is DIS-
be tied directly into the chiller microprocessor board. ABLED. This display will only appear if the remote
current limit option is enabled at the factory.
OPTIONS REMOTE TEMP RESET INPUT
◄► XXXXXXXXXXXXXXXXXX Remote Sound Limit Selection
Selections may be made for DISABLED (no signal), 0 Remote sound limit from an external source may be
VDC to10 VDC, 2 VDC to 10 VDC, 0 mA to 20 mA, tied directly into the chiller microprocessor board.
and 4 mA to 20 mA. OPTIONS REMOTE SOUND LIMIT INPUT
OPTIONS REMOTE TEMP RESET INPUT ◄► XXXXXXXXXXXXXXXXXXXX
◄► DISABLED
Selections may be made for DISABLED (no signal), 0
OPTIONS REMOTE TEMP RESET INPUT VDC to10 VDC, 2 VDC to 10 VDC, 0 mA to 20 mA,
◄► 0.0 TO 10.0 VOLTS DC and 4 mA to 20 mA.
OPTIONS REMOTE SOUND LIMIT INPUT
OPTIONS REMOTE TEMP RESET INPUT
◄► DISABLED
◄► 2.0 TO 10.0 VOLTS DC
OPTIONS REMOTE SOUND LIMIT INPUT
OPTIONS REMOTE TEMP RESET INPUT
◄► 0.0 TO 10.0 VOLTS DC
◄► 0.0 TO 20.0 MILLIAMPS
OPTIONS REMOTE SOUND LIMIT INPUT
OPTIONS REMOTE TEMP RESET INPUT
◄► 2.0 TO 10.0 VOLTS DC
◄► 4.0 TO 20.0 MILLIAMPS
OPTIONS REMOTE SOUND LIMIT INPUT
The default setting for Remote Temp Reset is DIS-
◄► 0.0 TO 20.0 MILLIAMPS
ABLED. This display will only appear if the remote
temp limit option is enabled at the factory. OPTIONS REMOTE SOUND LIMIT INPUT
◄► 4.0 TO 20.0 MILLIAMPS
Remote Current Limit Input Selection
Remote current limit from an external source may be The default setting for Remote Sound Limit is DIS-
tied directly into the chiller microprocessor board. ABLED. This display will only appear if the remote
sound limit option is enabled at the factory.
OPTIONS REMOTE CURRENT LIMIT INPUT
◄► XXXXXXXXXXXXXXXXXXXXX Low Ambient Cutout Enable/Disable 8
Selections may be made for DISABLED (no signal), 0 The low ambient cutout may be enabled or disabled.
VDC to 10 VDC, 2 VDC to 10 VDC, 0 mA to 20 mA, When enabled, the chiller will cut off when the low
and 4 mA to 20 mA. ambient cutout is reached. When disabled, the chiller
will run at any temperature.
OPTIONS REMOTE CURRENT LIMIT INPUT
OPTIONS LOW AMBIENT TEMPERATURE CUTOUT
◄► DISABLED
◄► ENABLED
OPTIONS REMOTE CURRENT LIMIT INPUT
◄► 0.0 TO 10.0 VOLTS DC OPTIONS LOW AMBIENT TEMPERATURE CUTOUT
◄► DISABLED
OPTIONS REMOTE CURRENT LIMIT INPUT
◄► 2.0 TO 10 VOLTS DC The default setting for the low ambient cutout will be
ENABLED.
OPTIONS REMOTE CURRENT LIMIT INPUT
◄► 0.0 TO 20.0 MILLIAMPS

OPTIONS REMOTE CURRENT LIMIT INPUT

◄► 4.0 TO 20.0 MILLIAMPS

JOHNSON CONTROLS 265

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

DATE / TIME AND SCHEDULE KEYS

DATE/TIME
KEY

SCHEDULE
KEY

LD10605

Date/Time Key Operation

When the DATE/TIME key is pressed, the chiller mi- CLOCK FRI 18-JUN-2005 10:15:33 AM
croprocessor will display the date and the time. This DAY OF MONTH = XX
feature is useful and required for using the Daily
Schedule. It is also a valuable tool for troubleshooting Pressing the ▼ (DOWN ARROW) key again scrolls to
to allow a technician to determine the time of the fault, the day of the month:
which is stored in the history memory buffers. When
CLOCK FRI 18-JUN-2005 10:15:33 AM
the DATE/TIME key is pressed, the first display screen
shown below will be displayed: DAY OF MONTH = XX

CLOCK FRI 18-JUN-2005 10:15:33 AM The day of the month can be selected by keying in the
DAY OF WEEK ◄ ► = XXX numerical value to select the day. After the day of the
month is selected, the  (ENTER) key must be pressed
Whenever any changes are made, the  (ENTER) key to store the data.
must be pressed to store the data.
A “0” must be typed in to select dates for
Pressing the ▲ or ▼ (ARROW) keys allows scrolling days of the 1st through the 9th.
to the next programmed item. Pressing the ▼ (DOWN
ARROW) key scrolls to the next item that can be pro-
grammed and the ▲ (UP ARROW) key scrolls to the
previous item.
Pressing the ▼ (DOWN ARROW) key again scrolls
The day of the week is the first display and can be
to month:
changed by pressing either the ◄ or ► (LEFT OR
RIGHT ARROW) key to select the day. After the day is CLOCK FRI 18-JUN-2005 10:15:33 AM
selected, the  (ENTER) key must be pressed to store MONTH ◄ ► = XX
the data.

266 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The month can be selected by keying in the numerical Pressing the ▼ (DOWN ARROW) key again scrolls
value to select the day. After the month is selected, the to AM/PM:
 (ENTER) key must be pressed to store the data.
CLOCK FRI 18-JUN-2004 10:15:33 AM
A “0” must be keyed in for months 01 AM/PM ◄ ► = XX
through 09. The panel will automatically
provide the abbreviation of the month. AM/PM can be selected by pressing the ◄ or ►
(ARROW) keys. After the meridian is selected, the
(ENTER) key must be pressed to store the data.
Pressing the ▼ (DOWN ARROW) key again scrolls to
Pressing the ▼ (DOWN ARROW) key again scrolls the time format selection:
to the year:
CLOCK FRI 18-JUN-2004 10:15:33 AM
CLOCK FRI 18-JUN-2005 10:15:33 AM
TIME FORMAT ◄ ► = XXXXXXX
YEAR = XXXX
The time format may be displayed in either a 12 hour
The year can be selected by keying in the numerical or 24 hour format. Selection can be changed by press-
value to select the year. After the year is selected, the  ing the ◄ or ► (ARROW) keys. The (ENTER) key
(ENTER) key must be pressed to store the data. must be pressed to store the data.
Pressing the ▼ (DOWN ARROW) key again scrolls
Schedule Key Operation
to the hour:
The Daily Schedule must be programmed for the unit
CLOCK FRI 18-JUN-2005 10:15:33 AM
start and stop times. To set the schedule, press the
HOUR = XX
SCHEDULE key. The display will provide a message
allowing access to 2 types of schedule information:
The hour can be selected by keying in the numerical
value for the hour. After the hour is selected, the  SCHEDULECHOOSE SCHEDULE TYPE
(ENTER) key must be pressed to store the data. ◄► XXXXXXXXXXXXXXXXXXXXXXXXX
One or two “0’s” must be keyed in for
The schedule types are:
hours 00-09.
• UNIT OPERATING SCHEDULE
• (Default selection)
• SOUND LIMIT SCHEDULE
Pressing the ▼ (DOWN ARROW) key again scrolls 8
(Only if Sound Limiting is enabled by the factory
to the minute:
when the option is installed.)
CLOCK FRI 18-JUN-2004 10:15:33 AM
The schedule type (UNIT OPERATING SCHEDULE
MINUTE = XX
or SOUND LIMIT SCHEDULE) may be changed by
The minute can be selected by keying in the numerical pressing the ◄ (LEFT ARROW) or ► (RIGHT AR-
value for the hour. After the minute is selected, the  ROW) keys followed by the (ENTER) key. The se-
(ENTER) key must be pressed to store the data. lection must be entered by pressing the  (ENTER)
key before a schedule display will appear.
One or two “0’s” must be keyed in for
minutes 00 through 09.

JOHNSON CONTROLS 267

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Unit Operating Schedule

The Unit Operating Schedule is used to enable/dis- To program the chiller for 24 hour operation, program
able the chiller unit on time of day. The chiller can be the start and stop times of each day of the week for
enabled and disabled once each day or it can be pro- 00:00.
grammed to run continuously. Any time the daily or
After the SUN (Sunday) schedule appears on the dis-
holiday schedule shuts the chiller down, the running
play, a subsequent press of the SCHEDULE or ▲ (UP
system(s) will go through a controlled ramped shut-
ARROW) key will display the Holiday schedule. This
down. If the UNIT OPERATING SCHEDULE is se-
is a two-part display. The first reads:
lected under the CHOOSE SCHEDULE display, the
following message will appear: SCHEDULEUNIT OPERATING
HOL START = 00:00 AMSTOP = 00:00 PM
SCHEDULEUNIT OPERATING
MON START = 06:00 AM STOP = 10:00 PM
The holiday times may be set using the same procedure
as described above for the days of the week. Be sure to
The line under the 0 is the cursor. If the start time is
press the  (ENTER) key after setting the START and
wrong, it can be changed by keying in the new time
STOP times to save the change in memory. Pressing
from the numeric keypad. Once the correct values for
the SCHEDULE key a second time, the display will
the START hour and minute are entered, press the 
show the individual days:
(ENTER) key. The cursor will then move to the AM/
PM selection. The meridian (AM/PM) value may be SCHEDULEUNIT OPERATING
changed by the ◄ (LEFT ARROW) or ► (RIGHT S M T W T F S HOLIDAY NOTED BY *
ARROW) keys and entered by pressing  (ENTER)
key. Repeat this process for the STOP time. Once a The line below the empty space is the cursor and will
schedule is entered, the schedule for the next day will move to the next or previous empty space when the ◄
appear. The start and stop time of each day may be (LEFT ARROW) or ► (RIGHT ARROW) keys and
programmed differently. To view the schedule without pressed. To set a day for the Holiday Schedule, the cur-
making a change, simply press the SCHEDULE key sor must be moved to the space following the day of
until the day you wish to view appears. The ▲ (UP the week. The * key is then pressed and an “*” will
ARROW) key will scroll backwards to the previous appear in the space signifying that day as a holiday.
screen. The Holiday schedule must be programmed weekly. If
If at any time the schedule is changed for there is no holiday, the “*” key is also used to delete the
Monday, all the other days will change to “*”. The  (ENTER) key is used to accept the holiday
the new Monday schedule. This means if schedule for the entire week.
the Monday times are not applicable for The HOLIDAY SCHEDULE is a tem-
the whole week, then the exceptional days porary schedule. Once the schedule is
would need to be reprogrammed to the executed, the selected holidays will be
desired schedule. cleared from memory for the following
week.

268 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Sound Limit Schedule

The SOUND LIMIT SCHEDULE allows setting the The AM/PM selection may be chosen using the ◄
day and time when the user desires using the “SILENT (LEFT ARROW) or ► (RIGHT ARROW) keys and
NIGHT” factory programmed option to limit chiller pressing  (ENTER) key to store the value.
loading and fan operation for reduced audible noise in
the surrounding area. If the SOUND LIMIT SCHED- This process is repeated for the STOP time.
ULE is selected under the CHOOSE SCHEDULE dis- Once the schedule for a specific day is programmed
play, the following message will appear: and entered, the schedule for the next day will appear.
SCHEDULE SOUND LIMIT = XXX % The schedule for each day may be programmed the
MON START = 06:00 AM STOP = 10:00 PM same or differently.
To view the schedule without changing it, simply press
The Sound Limit option can be enabled and disabled
the SCHEDULE key or the ▼ (DOWN ARROW) key
once each day or the chiller can be set to run continu-
until the desired day is displayed. The ▲ (UP ARROW)
ously in this mode for sound limiting whenever the
key will scroll backwards to the previous screen.
chiller is operating. When sound limiting is enabled,
the unit will be limited by the Sound Limit setpoint If the schedule is changed for Monday,
% as set under the PROGRAM key. XXX in the dis- all other days will change to the Monday
play above will show the Sound Limit Setpoint % pro- schedule. Be aware of this when program-
grammed under the PROGRAM key. 0% will cause no ming.
speed reduction, while 100% only allows running at
minimum speed.
The START Time for a specific day (hour and minute)
is entered using the same guidelines used for the start/
stop schedules, and press the  (ENTER) key to store
it into memory. The cursor will then move to the AM/
PM selection.

JOHNSON CONTROLS 269

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

MANUAL OVERRIDE KEY

MANUAL OVERRIDE
KEY

LD10605

Manual Overrride Key Operation

If the MANUAL OVERRIDE key is pressed during
a schedule shutdown, the STATUS display will dis-
play the message below. This indicates that the Daily
Schedule is being ignored and the chiller will start
when chilled liquid temperature allows, Remote Con-
tacts, UNIT switch and SYSTEM switches permitting.
This is a priority message and cannot be overridden by
anti-recycle messages, fault messages, etc. when in the
STATUS display mode. Therefore, do not expect to see
any other STATUS messages when in the MANUAL
OVERRIDE mode. MANUAL OVERRIDE is to only
be used in emergencies or for servicing. Manual over-
ride mode automatically disables itself after 30 min-
utes.

MANUAL OVERRIDE

270 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

PRINT KEY

PRINT
KEY

LD10605

Print Key Operation

The PRINT key is used to initiate a printout of cur- Table 22 - PRINTOUT TYPES
rent operating data (real time data), a complete history PRINTOUT TYPES
printout of all history (fault) buffers, a printout of all
Operating Data
normal shutdowns (compressor cycling, chiller shut-
(Default Selection)
down, etc.) or history (fault) data printout of a specific
All History Buffers
fault. History Buffer 1 will always be the most recent
fault history printout. Printing may also be canceled Normal Shutdowns
by selecting the CANCEL PRINTING option. The fol- History Buffer 1
8
lowing message is displayed when the PRINT key is History Buffer 2
pressed. History Buffer 3

PRINT CHOOSE PRINT REPORT History Buffer 4

◄► XXXXXXXXXXXXXXXXXXXXX History Buffer 5

History Buffer 6
After pressing the PRINT key, the printout type is History Buffer 7
selected by pressing the ◄ (LEFT ARROW) or ► History Buffer 8
(RIGHT ARROW) keys until the desired printout is History Buffer 9
displayed. History Buffer 10
Table 22 on page 271 shows the available printout Cancel Printing
types.
The specific printout is initiated by pressing the 
(ENTER) key.

JOHNSON CONTROLS 271

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

A sample of the operating data printout is shown be- 3=XXXXX, 4=XXXXX

START COUNTER 1=XXXXX, 2=XXXXX
low. The operating data printout is a snapshot of cur- 3=XXXXX
rent system operating conditions when the printout was (3 circuit)
selected. The sample shows combined printouts of 2, 3, 3=XXXXX, 4=XXXXX
and 4 circuit units. The actual printout will only show (4 circuit)
SOFTWARE VERSION C.ACS.XX.00
data for the appropriate chiller type.
VSD DATA
Bold italic text below a line of print is not ACTUAL FREQUENCY XXX.X HZ
on the actual printout. Bold italic text COMMAND FREQUENCY XXX.X HZ
DC BUS VOLTAGE XXX VDC
indicates information that may not be (2 circuit & 3 circuit)
available on all printouts or is additional DC BUS VOLTAGES XXX XXX VDC
information to help explain the difference (4 circuit)
in a 2/3 or 4-circuit printout. INTERNAL AMBIENT TEMP XXX.X DEGF
COOLING SYSTEM STATUS XXX
BASEPLATE TEMPS XXX XXX DEGF
Operating Data Printout PRECHARGE SIGNAL XXX
YORK INTERNATIONAL CORPORATION (2 circuit & 3 circuit)
LATITUDE SCREW CHILLER PRECHARGE SIGNALS XXX XXX
OPERATING DATA (4 circuit)
2:04:14 PM 18 FEB 10 MOTOR OVERLOADS 1/2 XXX XXX AMPS
MOTOR OVERLOADS 3/4 XXX XXX AMPS
SYS 1
NOT RUNNING (3 circuit & 4 circuit)
SOFTWARE VERSION C.VSD.XX.00
SYS 2
COMPRESSOR RUNNING SYSTEM 1 DATA
COMPRESSOR STATUS OFF
OPTIONS RUN TIME 0- 0- 0- 0 D-H-M-S
CHILLED LIQUID WATER MOTOR CURRENT 0AMPS 0 %FLA
LOCAL/REMOTE MODE REMOTE SUCTION PRESSURE 125 PSIG
LEAD/LAG CONTROL AUTOMATIC DISCHARGE PRESSURE 131 PSIG
REMOTE TEMP RESET DISABLED OIL PRESSURE 130 PSIG
REMOTE CURRENT LIMIT 0 TO 10 V SUCTION TEMPERATURE 68.4 DEGF
REMOTE SOUND LIMIT 4 TO 20 MA DISCHARGE TEMPERATURE 68.8 DEGF
OIL TEMPERATURE 68.8 DEGF
(if Sound Limiting enabled) SAT SUCTION TEMP 71.8 DEGF
LOW AMBIENT CUTOUT ENABLED SUCTION SUPERHEAT 3.4 DEGF
PROGRAM VALUES SAT DISCHARGE TEMP 74.5 DEGF
SUCT PRESS CUTOUT 44 PSIG DISCHARGE SUPERHEAT 6.3 DEGF
LOW AMBIENT CUTOUT 25.0 DEGF MOTOR TMP XXX.X XXX.X XXX.X DEGF
LEAVING LIQUID CUTOUT 36.0 DEGF COMPRESSOR SPEED XXX.X %
MOTOR CURRENT LIMIT 100 %FLA ECONOMIZER SOLENOID OFF
FLASH TANK LEVEL XXX.X %
PULLDOWN CURRENT LIMIT 100 %FLA FEED VALVE % OPEN XXX.X %
PULLDOWN LIMIT TIME 0 MIN DRAIN VALVE % OPEN XXX.X %
SUCTION SUPERHEAT SETP 12.0 DEGF CONDENSER FANS ON 0
UNIT ID NUMBER 0 COMPRESSOR HEATER ON
SOUND LIMIT SETPOINT 100% RUN PERMISSIVE ON
(if Sound Limiting enabled) VSD RUN RELAY OFF
UNIT DATA VSD SOFTWARE RUN SIGNAL OFF
LEAVING LIQUID TEMP 49.0 DEGF SYSTEM 2 DATA
RETURN LIQUID TEMP 58.2 DEGF COMPRESSOR STATUS ON
RUN TIME 0-0-15-26 D-H-M-S
TEMP RATE XXX.X DEGF/MIN MOTOR CURRENT 104 AMPS 87 %FLA
COOLING RANGE 42.0+/-2.0 DEGF SUCTION PRESSURE 57 PSIG
REMOTE SETPOINT 44.0 DEGF DISCHARGE PRESSURE 233 PSIG
AMBIENT AIR TEMP 74.8 DEGF OIL PRESSURE 218 PSIG
LEAD SYSTEM SYS 2 SUCTION TEMPERATURE 42.9 DEGF
FLOW SWITCH ON DISCHARGE TEMPERATURE 145.5 DEGF
EVAPORATOR PUMP RUN ON OIL TEMPERATURE 102.8 DEGF
EVAPORATOR HEATER OFF SAT SUCTION TEMP 31.7 DEGF
ACTIVE REMOTE CONTROL NONE SUCTION SUPERHEAT 11.2 DEGF
OPERATING HOURS 1=XXXXX, 2=XXXXX SAT DISCHARGE TEMP 112.1 DEGF
DISCHARGE SUPERHEAT 33.4 DEGF
3=XXXXX MOTOR TMP XXX.X XXX.X XXX.X DEGF
(3 circuit) COMPRESSOR SPEED XXX.X%
LIQUID LINE SOLENOID ON

272 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

History Data Printout

FLASH TANK LEVEL XXX.X %
FEED VALVE % OPEN XXX.X % History printouts, when selected, provide stored data
DRAIN VALVE % OPEN XXX.X % relating to all specific system and chiller operating
CONDENSER FANS ON 3 conditions at the time of the fault, regardless of wheth-
COMPRESSOR HEATER OFF er a lockout occurred. History information is stored in
RUN PERMISSIVE ON battery-backed memory on the Chiller Control Board
VSD RUN RELAY OFF
VSD SOFTWARE RUN SIGNAL OFF and is not affected by power failures or resetting of
UNIT OPERATING SCHEDULE faults. Whenever a fault of any type occurs, all system
S M T W T F S *=HOLIDAY operating data is stored in battery-backed memory at
MON START=00:00AM STOP=00:00AM the instant of the fault. The history printout is similar
TUE START=00:00AM STOP=00:00AM to the operating data printout except for the change in
WED START=00:00AM STOP=00:00AM
THU START=00:00AM STOP=00:00AM the header information shown below:
FRI START=00:00AM STOP=00:00AM YORK INTERNATIONAL CORPORATION
SAT START=00:00AM STOP=00:00AM LATITUDE SCREW CHILLER
HOL START=00:00AM STOP=00:00AM HISTORY NUMBER 1
SOUND LIMIT SCHEDULE 2:04:14 PM 18 FEB 10
(This section is printed only if the SYS 1 YYYYYYY
sound limit schedule is enabled)
MON START=00:00AM STOP=00:00AM HIGH DSCH PRESS SHUTDOWN
TUE START=00:00AM STOP=00:00AM STATUS AT TIME OF SHUTDOWN
WED START=00:00AM STOP=00:00AM SYS 1 XXXXXXXXXXXXXXXXXXXXXXXXXX
THU START=00:00AM STOP=00:00AM SYS 2 XXXXXXXXXXXXXXXXXXXXXXXXXX
FRI START=00:00AM STOP=00:00AM ALL FAULTS
SAT START=00:00AM STOP=00:00AM XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
HOL START=00:00AM STOP=00:00AM XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

The most recent fault will always be stored as HIS-

TORY BUFFER #1.

JOHNSON CONTROLS 273

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SERVICE KEY

SERVICE
KEY

LD10605

Service Key Operation

The SERVICE key allows viewing data related to the Pressing the  (ENTER) key allows “view only” Ser-
internal function of the chiller system electronics. Data vice Mode operation. All control board I/O will be
such as circuit board output status as controlled by the viewable in this mode. No outputs can be changed. For
Chiller Control software while operating can be viewed troubleshooting or start-up commissioning purposes,
and compared to actual chiller operation in the event the Chiller Micro Board and some VSD outputs can be
servicing is required. The SERVICE key allows con- toggled or changed by turning off the UNIT SWITCH,
trolling of analog and digital outputs for troubleshoot- pressing the SERVICE key, entering password 9675,
ing purposes when the unit is not running. The Unit and pressing the  (ENTER) key. Once the password
Serial Number and Optimized IPLV Control mode are is entered, the Digital Outputs (DO) can be toggled by
also entered using the SERVICE key. pressing the  (ENTER) key. The Analog Outputs can
be programmed to output a specific value using the
The ▲▼ (ARROW) keys allow scrolling through the keypad and programming in the desired value, which
displays. The ▼ (ARROW) key scrolls through the will usually be noted as a % or VDC. If the UNIT
displays in the forward direction. SWITCH is turned back on, the chiller will revert to
When the SERVICE key is pressed, the following mes- normal viewable only control.
sage will appear: Displays can be viewed by pressing the ▲and ▼ (AR-
SERVICE MODE XXXX ROW) keys. The ▼ (ARROW) key scrolls through the
PRESS ENTER KEY TO CONTINUE displays in the forward direction.

XXXX will display a password, if a numerical pass- The ◄ and ► (ARROW) keys allow jumping from
word is entered. data section to data section to avoid scrolling sequen-
tially through all the data. Once in a data section, the
▲and ▼ (ARROW) keys allow scrolling through the
data under the section. Pressing the ◄ and ► (AR-
ROW) keys at any time moves to the top of the next
data section.
274 JOHNSON CONTROLS
FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The data sections are listed below: If the input is programmed for a current input, the volt-
age read by the MUX is displayed. If the input is dis-
• Software Versions abled under the OPTIONS key, the voltage display will
• Analog Inputs display “DISABLED”.
• Digital Inputs The analog inputs display will continue to sequence as
follows. The inputs indicate voltages read between the
• Digital Outputs
input terminal to the Chiller Logic Board and the plug
• Analog Outputs GND or Drain.
• VSD Logic Digital Output SERVICE AI J17-14 SPARE ANALOG 1
X.X VDC
SERVICESOFTWARE VERSIONS
CONTROL = C.AXX.ZZ.YY VSD = C.VXX.ZZ.YY SERVICE AI J17-15 SPARE ANALOG 2
X.X VDC
The software version of the chiller Micro Control
Board and the VSD microprocessor are viewable in the SERVICE AI J18-7 LEAVING LIQUID TEMP
first data section. X.X VDC = XXX.X °F

XX, YY, and ZZ will be filled in with alphanumeric SERVICE AI J18-8 RETURN LIQUID TEMP
characters. X.X VDC = XXX.X °F
The second data section displays the Analog Inputs SERVICE AI J18-9 AMBIENT AIR TEMP
(AI). Displays for 3 and 4 compressor chillers are X.X VDC = XXX.X °F
skipped if the unit does not have those systems. These
messages will only be displayed in English. The volt- SERVICE AI J19-1 SYS1 MOTOR TEMP T1
age displayed is referenced to common (return, ground) X.X VDC = XXX.X °F
in the system. J12-3 can also be used as common, as
well as chassis ground, or the common terminal point SERVICE AI J19-2 SYS1 MOTOR TEMP T2
on the Chiller Control Board. See the wiring diagrams. X.X VDC = XXX.X °F

SERVICE AI J17-11 REMOTE TEMP RESET SERVICE AI J19-3 SYS1 MOTOR TEMP T3
X.X VDC = XXX.X % X.X VDC = XXX.X °F

SERVICE AI J17-12 REMOTE CURRENT LIMIT SERVICE AI J19-6 SYS2 MOTOR TEMP T1
X.X VDC = XXX.X % X.X VDC = XXX.X °F

SERVICE AI J17-13 REMOTE SOUND LIMIT SERVICE AI J19-7 SYS2 MOTOR TEMP T2
8
X.X VDC = XXX.X % X.X VDC = XXX.X °F

The Remote Temp Reset, Remote Current Limit Reset, SERVICE AI J19-8 SYS2 MOTOR TEMP T3
and Remote Sound Limit inputs have onboard voltage X.X VDC = XXX.X °F
dividers, if the jumper is set for a voltage input. This
will cause the voltage read on the display to be less SERVICE AI J20-1 SYS3 MOTOR TEMP T1
than the voltage on the board header inputs between X.X VDC = XXX.X °F
TB1-17 and 18, TB1-19 and 20, or TB1-40 and 41). To SERVICE AI J20-2 SYS3 MOTOR TEMP T2
correct for this when measuring voltage at the remote
X.X VDC = XXX.X °F
device supplying voltage to the board header while
troubleshooting, use the following calculation:
Voltage = 10 x VDC volts / 4.5

JOHNSON CONTROLS 275

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SERVICE AI J20-3 SYS3 MOTOR TEMP T3 SERVICE AI J22-24 SYS2 DISCHARGE PRESS
X.X VDC = XXX.X °F X.X VDC = XXX.X PSIG

SERVICE AI J20-6 SYS4 MOTOR TEMP T1 SERVICE AI J23-3 SYS3 OIL TEMP
X.X VDC = XXX.X °F X.X VDC = XXX.X °F

SERVICE AI J20-7 SYS4 MOTOR TEMP T2 SERVICE AI J23-6 SYS3 FL TANK LEVEL
X.X VDC = XXX.X °F X.X VDC = XXX.X %

SERVICE AI J20-8 SYS4 MOTOR TEMP T3 SERVICE AI J23-13 SYS3 SUCTION TEMP
X.X VDC = XXX.X °F X.X VDC = XXX.X °F

SERVICE AI J21-3 SYS1 OIL TEMP SERVICE AI J23-16 SYS3 DISCHARGE TEMP
X.X VDC = XXX.X °F X.X VDC = XXX.X °F

SERVICE AI J21-6 SYS1 FL TANK LEVEL SERVICE AI J23-20 SYS3 SUCTION PRESS
X.X VDC = XXX.X % X.X VDC = XXX.X PSIG

SERVICE AI J21-13 SYS1 SUCTION TEMP SERVICE AI J23-22 SYS3 OIL PRESS
X.X VDC = XXX.X °F X.X VDC = XXX.X PSIG

SERVICE AI J21-16 SYS1 DISCHARGE TEMP SERVICE AI J23-24 SYS3 DISCHARGE PRESS
X.X VDC = XXX.X °F X.X VDC = XXX.X PSIG

SERVICE AI J21-20 SYS1 SUCTION PRESS SERVICE AI J24-3 SYS4 OIL TEMP
X.X VDC = XXX.X PSIG X.X VDC = XXX.X °F

SERVICE AI J21-22 SYS1 OIL PRESS SERVICE AI J24-6 SYS4 FL TANK LEVEL
X.X VDC = XXX.X PSIG X.X VDC = XXX.X %

SERVICE AI J21-24 SYS1 DISCHARGE PRESS SERVICE AI J24-13 SYS4 SUCTION TEMP
X.X VDC = XXX.X PSIG X.X VDC = XXX.X °F

SERVICE AI J22-3 SYS2 OIL TEMP SERVICE AI J24-16 SYS4 DISCHARGE TEMP
X.X VDC = XXX.X °F X.X VDC = XXX.X °F

SERVICE AI J22-6 SYS2 FL TANK LEVEL SERVICE AI J24-20 SYS4 SUCTION PRESS
X.X VDC = XXX.X % X.X VDC = XXX.X PSIG

SERVICE AI J22-13 SYS2 SUCTION TEMP SERVICE AI J24-22 SYS4 OIL PRESS
X.X VDC = XXX.X °F X.X VDC = XXX.X PSIG

SERVICE AI J22-16 SYS2 DISCHARGE TEMP SERVICE AI J24-24 SYS4 DISCHARGE PRESS
X.X VDC = XXX.X °F X.X VDC = XXX.X PSIG

SERVICE AI J22-20 SYS2 SUCTION PRESS The third data section displays the Digital Inputs (DI)
X.X VDC = XXX.X PSIG
to the Chiller Control Board that can be viewed from
the Service Mode. Displays for systems 3 and 4 are
SERVICE AI J22-22 SYS2 OIL PRESS
skipped if the systems are not present on the chiller.
XXX is replaced with ON or OFF in the actual display.
X.X VDC = XXX.X PSIG
These messages will only be displayed in English.

276 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SERVICE DI J4-2 UNIT SWITCH 1 SERVICE DI J7-8 CONFIG INPUT 3

STATUS = XXX STATUS = XXX

SERVICE DI J4-3 UNIT SWITCH 2 SERVICE DI J7-10 CONFIG SPARE INPUT 0

STATUS = XXX STATUS = XXX

SERVICE DI J4-4 SYS 1 HPCO SERVICE DI J7-12 CONFIG SPARE INPUT 1

STATUS = XXX STATUS = XXX

SERVICE DO J9-1 EVAP HEATER

SERVICE DI J4-5 SYS 2 HPCO
RB1 TB1-20 STATUS = XXX
STATUS = XXX

SERVICE DO J9-2 SYS 1/3 VSD RUN

SERVICE DI J4-6 VSD FAULT RELAY
RB1 TB1-18 STATUS = XXX
STATUS = XXX

SERVICE DO J9-3 SYS 1/3 ALARM

SERVICE DI J5-1 SYS 3 HPCO
RB1 TB1-16 STATUS = XXX
STATUS = XXX

SERVICE DO J9-4 EVAP HEATER 2

SERVICE DI J5-2 SYS 4 HPCO
RB1 TB1-14 STATUS = XXX
STATUS = XXX

SERVICE DO J9-5 SYS 1 SPARE

SERVICE DI J5-3 SPARE DIGITAL INPUT 2
RB1 TB1-12 STATUS = XXX
STATUS = XXX

SERVICE DO J9-6 SPARE 1

J5 is not present on a 2 compressor Chiller Control RB1 TB1-10 STATUS = XXX
Board. The displays above are skipped for a 2 com-
pressor chiller: SERVICE DO J9-7 SPARE 2
RB1 TB1-8 STATUS = XXX
SERVICE DI J6-2 FLOW SWITCH
STATUS = XXX SERVICE DO J9-8 SYS 1 COND FAN OUT 1
RB1 TB1-6 STATUS = XXX
SERVICE DI J6-3 PRINT
SERVICE DO J9-9 SYS 1 COND FAN OUT 2
STATUS = XXX
RB1 TB1-5 STATUS = XXX 8
SERVICE DI J6-4 SYS 1/3 RUN PERM
SERVICE DO J9-10 SYS 1 COND FAN OUT 3
STATUS = XXX
RB1 TB1-4 STATUS = XXX

SERVICE DI J6-5 SYS 2/4 RUN PERM

SERVICE DO J9-11 SYS 1 COMP HEATER
STATUS = XXX
RB1 TB1-3 STATUS = XXX

SERVICE DI J6-6 SPARE DIGITAL INPUT 1 SERVICE DO J9-10 SYS 1 ECON SOL VALVE
STATUS = XXX RB1 TB1-2 STATUS = XXX

SERVICE DI J7-2 CONFIG INPUT 0 SERVICE DO J10-1 EVAP PUMP RUN

STATUS = XXX RB1 TB1-20 STATUS = XXX

SERVICE DI J7-4 CONFIG INPUT 1 SERVICE DO J10-2 SYS 2/4 VSD RUN
STATUS = XXX RB1 TB1-18 STATUS = XXX

SERVICE DI J7-6 CONFIG INPUT 2

SERVICE DO J10-3 SYS 2/4 ALARM
STATUS = XXX
RB1 TB1-16 STATUS = XXX

JOHNSON CONTROLS 277

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SERVICE DO J10-4 CHILLER RUN SERVICE DO J11-9SYS 3 COND FAN OUT 2

RB1 TB1-14 STATUS = XXX RB1 TB1-5 STATUS = XXX

SERVICE DO J10-5 SYS 2 SPARE SERVICE DO J11-10SYS 3 COND FAN OUT 3

RB1 TB1-12 STATUS = XXX RB1 TB1-4 STATUS = XXX

SERVICE DO J10-6 SPARE 3 SERVICE DO J11-11SYS 3 COMP HEATER

RB1 TB1-10 STATUS = XXX RB1 TB1-3 STATUS = XXX

SERVICE DO J10-7 SPARE 4 SERVICE DO J11-12SYS 3 ECON SOL VALVE

RB1 TB1-8 STATUS = XXX RB1 TB1-2 STATUS = XXX

SERVICE DO J10-8SYS COND 2 FAN OUT 1

The fifth data section displays the Analog Outputs
RB1 TB1-6 STATUS = XXX
(AO) that can be viewed from the Service Mode. The
Analog Output signals are typically referenced to the
SERVICE DO J10-9SYS COND 2 FAN OUT 2
common (return, ground) in the system. J12-3 can also
RB1 TB1-5 STATUS = XXX
be used as common, as well as chassis ground, or the
common terminal point on the Chiller Control Board.
SERVICE DO J10-10SYS COND 2 FAN OUT 3
See the wiring diagrams. GND on the plug. Displays
RB1 TB1-4 STATUS = XXX
for systems 3 and 4 are skipped if the systems are not
present on the chiller. XXX is replaced with ON or
SERVICE DO J10-11SYS 2 COMP HEATER
OFF in the actual display. The state of these outputs is
RB1 TB1-3 STATUS = XXX
only viewable unless the password 9675 (ENTER)
key was entered from the initial Service Mode dis-
SERVICE DO J10-12SYS 2 ECON SOL VALVE play with the UNIT switch in the OFF position. The
RB1 TB1-2 STATUS = XXX chiller will not be permitted to run when the outputs
are made active. The outputs can be programmed for
SERVICE DO J11-1SYS 4 COND FAN OUT 1 a specific % output by keying in the value and press-
RB1 TB1-20 STATUS = XXX ing the (ENTER) key. These messages will only be
displayed in English.
SERVICE DO J11-2SYS 4 COND FAN OUT 2
RB1 TB1-18 STATUS = XXX SERVICE AO J15-1SYS 1 FEED VALVE OUT
XXX.X % = XX.X VDC
SERVICE DO J11-3SYS 4 COND FAN OUT 3
RB1 TB1-16 STATUS = XXX SERVICE AO J15-3SYS 1 DRAIN VALVE OUT
XXX.X % = XX.X VDC
SERVICE DO J11-4SYS 4 COMP HEATER
RB1 TB1-14 STATUS = XXX
SERVICE AO J15-5SYS 2 FEED VALVE OUT
SERVICE DO J11-5SYS 4 ECON SOL VALVE XXX.X % = XX.X VDC
RB1 TB1-12 STATUS = XXX
SERVICE AO J15-7SYS 2 DRAIN VALVE OUT
XXX.X % = XX.X VDC
SERVICE DO J11-6 SYS 4 SPARE
RB1 TB1-10 STATUS = XXX SERVICE AO J14-1 SYS 3 FEED VALVE OUT
XXX.X % = XX.X VDC
SERVICE DO J11-7 SYS 3 SPARE
RB1 TB1-8 STATUS = XXX SERVICE AO J14-2 SYS 3 DRAIN VALVE OUT
XXX.X % = XX.X VDC
SERVICE DO J11-8SYS 3 COND FAN OUT 1
RB1 TB1-6 STATUS = XXX

278 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SERVICE AO J14-3 SYS 4 FEED VALVE OUT The sixth data section displays the “VSD” digital out-
XXX.X % = XX.X VDC puts (DO) that can be viewed from the Service Mode.
The Digital Output signals indicate the status of the
SERVICE AO J14-4 SYS 4 DRAIN VALVE OUT output. The 0 VAC to 120 VAC digital outputs are ref-
XXX.X % = XX.X VDC erenced to neutral (Wire 2).

SERVICE AO J25-1 SYS 1 SPARE SERVICE DO J10-2 VSD COOLING FAN/PUMP

XXX.X % = XX.X VDC VSD LOGIC STATUS = XXX

SERVICE AO J25-2 SYS 2 SPARE

XXX.X % = XX.X VDC

SERVICE AO J25-3 SYS 3 SPARE

XXX.X % = XX.X VDC

SERVICE AO J25-4 SYS 4 SPARE

XXX.X % = XX.X VDC

JOHNSON CONTROLS 279

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SYSTEM SWITCHES KEY

SYSTEM
SWITCHES
KEY

LD10605

System Switches Key Operation

The SYSTEM SWITCHES key allows the operator The ◄ (LEFT ARROW) or ► (RIGHT ARROW)
to turn individual systems ON and OFF. Safety lock- keys allow scrolling through the choices of:
outs are also reset by selecting the respective system
switch RESET. When the SYSTEM SWITCHES key • SYSTEM OFF (default)
is pressed, the following message will appear: • SYSTEM ON
SYSTEM SWITCHES SYS 1 ON / OFF / RESET • RESET (LOCKOUT)
◄► =XXXXXXXXXXXXXXX
The switch selection is accepted into memory by press-
The display indicates the respective system and it’s on/ ing the  (ENTER) key.
off /reset switch status. The ▲▼ (ARROW) keys al-
When the “RESET” selection is made and accepted, it
low scrolling to the next and previous system switch
will not change the position of the switch (either ON
(System 1, 2, 3, or 4).
or OFF).
SYSTEM SWITCHES SYS 2 ON / OFF / RESET Whenever possible, except in emergen-
◄► =XXXXXXXXXXXXXXX cies, always use the associated system
SYSTEM SWITCHES SYS 3 ON / OFF / RESET
switch to turn off a compressor, which
allows the compressors to go through
◄► =XXXXXXXXXXXXXXX
a controlled shutdown. Avoid using the
SYSTEM SWITCHES SYS 4 ON / OFF / RESET "UNIT" switch to turn off the compres-
◄► =XXXXXXXXXXXXXXX sors.

280 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SERIAL NUMBER PROGRAMMING

When changing a Chiller Control Board, a Chiller SERVICE MODE XXXXX
Control Board EPROM, or if a situation occurs where PRESS ENTER KEY TO CONTINUE
a chiller is not programmed from the factory, the chill-
er serial number will need to be programmed into the Key in the 5 digit alphanumeric password provided by
chiller. The serial number is the actual serial number Product Technical Support and press the  (ENTER)
displayed on the unit Data Plate. The serial number key. The following display will appear:
will be in a format similar to RABM000000, where the S/N ENTRYUNIT SERIAL NUMBER POS 1
first 4 characters are letters and the next 6 are numbers.
◄► X
The lack of a serial number programmed into the panel
will not prevent a chiller from operating, but a High Key in the first letter (A through Z) of the serial num-
IPLV chiller will only operate in the Standard IPLV ber using the ◄ and ► (ARROW) keys and press the
mode. The STATUS display will inform the operator  (ENTER) key. Press the ▼(DOWN ARROW) key
a serial number problem exists by displaying the fol- to scroll to position 2 and the following message will
lowing message: appear:
UNIT WARNING: INVALID SERIAL NUMBER S/N ENTRYUNIT SERIAL NUMBER POS 2
ENTER UNIT SERIAL NUMBER ◄► XX

If the following message appears, immediately contact Key in the second letter (A through N) of the serial
Johnson Controls Product Technical Support. The ap- number using the ◄ and ► (ARROW) keys and press
pearance of this message may also mean the chiller has the  (ENTER) key. Press the ▼(DOWN ARROW)
lost important factory programmed information and key to scroll to position 3 and the following message
may need to be reprogrammed. Additional STATUS will appear:
messages can be viewed by pressing the STATUS key
repetitively to enable the technician to view any other S/N ENTRYUNIT SERIAL NUMBER POS 3
messages that may be preventing the chiller from op- ◄► XXX
erating.
Key in the third letter (A through Z) of the serial num-
Changing the programming of this fea- ber using the ◄ and ► (ARROW) keys and press the
ture requires the date and time to be set  (ENTER) key. Press the ▼(DOWN ARROW) key
on the chiller prior to programming. The to scroll to position 4 and the following message will
password is also time sensitive and must appear:
be used the same day it is received.
S/N ENTRYUNIT SERIAL NUMBER POS 4
8
◄► XXXX
Johnson Controls Product Technical Support will pro-
vide a factory password to allow programming the seri- Key in the fourth letter (A through Z) of the serial num-
al number into the chiller. You will need to supply Fac- ber using the ◄ and ► (ARROW) keys and press the
tory Technical Support with the version of the Chiller  (ENTER) key. Press the ▼(DOWN ARROW) key
Control Board EPROM. The version will be written on to scroll to positions 5-7 and the following message
the EPROM label and typically will be in the format will appear:
Version C.ACS.XX.XX.
S/N ENTRY UNIT S/N = YYYY XXX ZZZ
After obtaining the password, the following steps will UNIT SERIAL NUMBER POS 5-7 = XXX
need to be followed to input the serial number. As the
serial number is input, the characters keyed in will ap- At this point, the letters entered for the YYYY inputs
pear in the display indicating the panel has recognized should now appear in the top line of the display and
the entry. should match the first 4 characters of the serial number
on the unit Data Plate. The next three digits of the serial
First press the SERVICE key. The following message number should now be keyed in. Press the  (ENTER)
will appear: key to store the input. Press the ▼ (DOWN ARROW)
key to scroll to positions 8 through10 and the following
message will appear:

JOHNSON CONTROLS 281

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

S/N ENTRY UNIT S/N = YYYY XXX ZZZ The STATUS display will inform the operator when
UNIT SERIAL NUMBER POS 8-10 = XXX a High IPLV chiller is operating with the High IPLV
mode disabled by displaying the following STATUS
At this point, the letters entered for the YYYY and message:
XXX inputs should now appear in the top line of the
UNIT WARING: OPTIMZED EFFICIENCY
display and should match the first 7 characters of the
DISABLED - CONTACT YORK REPRESENATIVE
serial number on the unit Data Plate. The next three
digits of the serial number should now be keyed in. If the message above appears, immediately contact
Press the  (ENTER) key to store the input. The full Johnson Controls Product Technical Support or John-
serial number should now be displayed across the top son Controls ES Commercial for a password to enable
of the display and the cursor should disappear. the High IPLV mode. You will need to provide Johnson
Press the STATUS key to go to the next STATUS dis- Controls Product Technical Support or Johnson Con-
play to determine if additional Status messages are pre- trols ES Commercial with the Unit Serial Number lo-
venting the chiller from operating. cated on the chiller nameplate. The date and time will
also need to be current on the chiller, and will need
ENABLING OPTIMIZED HIGH IPLV MODE to be provided to Johnson Controls Product Technical
Support or Johnson Controls ES Commercial. It is es-
When changing a Chiller Control Board, a Chiller
sential Johnson Controls Product Technical Support
Control Board EPROM, or if a situation occurs where
or, Johnson Controls ES Commercial is aware of the
a chiller is not programmed from the factory, the chill-
“local” time to allow adjustments for time differences
er will not be capable of operating High IPLV mode.
from Eastern Standard Time.
The serial number of the unit will first need to be pro-
grammed into the panel, if the Invalid Serial Number After obtaining the password, the fol-
display appears (see Page 292). The Invalid Serial lowing steps will need to be carried out
Number message will override the Optimized Effi- “immediately” to input the serial number.
ciency Disabled message. If the chiller was purchased If the password is not immediately input,
with the High IPLV Option and does not have the High the panel will not accept it.
IPLV mode enabled, it will not prevent the chiller from
operating, but the chiller will only operate in the Stan- To enable HIGH IPLV Mode, first press the SERVICE
dard IPLV mode. Additional STATUS messages can key. The following message will appear:
be viewed by pressing the STATUS key repetitively to
enable the technician to view any other messages that SERVICE MODE XXXXX
may be preventing the chiller from operating. PRESS ENTER KEY TO CONTINUE

Changing the programming of this fea- Key in the 6 digit alphanumeric password provided by
ture requires the date and time to be set Johnson Controls Technical Support or Johnson Con-
on the chiller prior to programming the trols ES Commercial and press the  (ENTER) key.
password. The password is also time sensi- The following display will appear:
tive and must be used “immediately” when
it is received. IPLV OPTIMZED EFFICIENCY CONTROL
◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX

When the Optimized (High IPLV) is enabled, the dis-

play will indicate, “ENABLED”. When not enabled,
the display will indicate, “DISABLED”. Use the ◄
and ► (ARROW) keys to enable/disable and press the
 (ENTER) key to store the selection.

282 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

UNIT SETUP MODE

Unit Setup Mode will allow the programming all of This mode may be entered by pressing the PROGRAM
the programmable values that the user should never key, entering the password 4245, and pressing the
change. These will either be programmed at the factory (ENTER) key. Table 23 on page 283 lists the values
or by service personnel on the job. that can be programmed in this mode. Details relating
to the actual message follow the table.
Table 23 - UNIT SETUP PROGRAMMABLE VALUES
SETUP MODE VALUE PROGRAMMABLE RANGE DEFAULT
Sys 1 Number of Cond Fans 4 to 6 6
Sys 2 Number of Cond Fans 4 to 6 6
Sys 3 Number of Cond Fans 4 to 6 6
Sys 4 Number of Cond Fans 4 to 6 6
Compressor 1 Operating hours 0 to 99,999 0
Compressor 2 Operating hours 0 to 99,999 0
Compressor 3 Operating hours 0 to 99,999 0
Compressor 4 Operating hours 0 to 99,999 0
Compressor 1 Starts 0 to 99,999 0
Compressor 2 Starts 0 to 99,999 0
Compressor 3 Starts 0 to 99,999 0
Compressor 4 Starts 0 to 99,999 0
Clear History Buffers Yes/ No -
Remote Temp Reset Option Disabled/Enabled Disabled
Remote Current Limit Option Disabled/Enabled Disabled
Sound Limit Option Disabled/Enabled Disabled
Remote Inputs Service Time 5 min - 60 min 15 min
Sys 1 Motor Sensor to Ignore See Below None
Sys 2 Motor Sensor to Ignore See Below None
Sys 3 Motor Sensor to Ignore See Below None
Sys 4 Motor Sensor to Ignore See Below None

The following messages will be displayed for the Unit 8

Setup Mode in the order they appear. The first group of
displays relates to setup parameters that relate to unit
configuration and factory setpoints.

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX
SYS 1 NUMBER OF COND FANS =X COMP 1 OPERATING HOURS = XXXXX

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX
SYS 2 NUMBER OF COND FANS =X COMP 2 OPERATING HOURS = XXXXX

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX
COMP 3 OPERATING HOURS = XXXXX
SYS 3 NUMBER OF COND FANS =X

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX
COMP 4 OPERATING HOURS = XXXXX
SYS 4 NUMBER OF COND FANS =X

JOHNSON CONTROLS 283

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX SETUP MODE SYS 3 MOTOR SENSOR TO IGNORE
COMP 1 STARTS = XXXXX ◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX SETUP MODE SYS 4 MOTOR SENSOR TO IGNORE
COMP 2 STARTS = XXXXX ◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX

SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX If a motor temperature sensor fails, a single sensor may
COMP 3 STARTS = XXXXX be ignored by making a program change in the Unit
Setup Mode. The default setting is “NONE”, indicat-
SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX
ing all sensors are being monitored.
COMP 4 STARTS = XXXXX
DEFAULT PROGRAMMABLE VALUES
The following setup display is selectable as YES or
NO using the ◄ and ► (ARROW) keys. To quickly program or reset most of the user program-
mable values to their default values, press PROGRAM,
SETUP MODE CLEAR HISTORY BUFFERS? 6140, ENTER. The following message will then be
◄ ► XXXXXXXXXXXXXXXXXXXXXXXX displayed, allowing a choice to reset the operating pa-
rameters to their default values.
The following (3) setup OPTION displays are select-
able as ENABLED or DISABLED using the ◄ and ► DEFAULTS SET PROG VALUES TO DEFAULT?
(ARROW) keys according to the options installed on ◄► XXX
the chiller:
YES or NO may be selected for XXX using the ◄ and
SETUP MODE REMOTE TEMP RESET OPTION ► (ARROW) keys to change the selection.
◄ ► XXXXXXXXXXXXXXXXXXXXXXXX
Following is a list of the operating parameters that will
SETUP MODE REMOTE CURRENT LIMIT OPTION be reset to their default values:
◄ ► XXXXXXXXXXXXXXXXXXXXXXXX
• Suction Pressure Cutout = 24.0 psig
SETUP MODE SOUND LIMIT OPTION
• Low Ambient Air Temp Cutout = 25°F
◄ ► XXXXXXXXXXXXXXXXXXXXXXXX
• Leaving Chilled Liquid Temp Cutout = 36°F
The following setup OPTION display is selectable as
ENABLED or DISABLED using the ◄ and ► (AR- • High Motor Current Limit = 100%
ROW) keys: • Pulldown Current Limit = 100%
SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX • Pulldown Current Limit Time = 0 min
REMOTE INPUTS SERVICE TIME = XX MIN
• Suction Superheat Setpoint = 10°F
The following OPTION displays are selectable as
• Sound limit Setpoint = 0%
ENABLED or DISABLED using the ◄ and ► (AR-
ROW) keys. The choices are: SERIAL PORT CONNECTIONS
• NONE (default) Table 24 on page 285 lists the serial ports and the cir-
cuit board they are located on. The serial communica-
• TEMP SENSOR 1
tions lines provide communications to external devices
• TEMP SENSOR 2 outside the chiller and between microprocessors locat-
ed in the chiller control panel.
• TEMP SENSOR 3
SETUP MODE SYS 1 MOTOR SENSOR TO IGNORE TB2 allows connecting to a remote OptiView RCC or
◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX Microgateway. The OptiView RCC option is not yet
available. The OptiView RCC and Microgateway op-
SETUP MODE SYS 2 MOTOR SENSOR TO IGNORE tion cannot both be used. Only one or the other is per-
◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX mitted to be connected to the chiller.

284 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Table 24 - SERIAL PORT CONNECTIONS

BOARD HEADER PORT TYPE PORT USE
Chiller Control Board TB1 / TB2 RS-232 / RS-485 Printer/RCC and ISN
Chiller Control Board J2 / J1 RS-485 Control Panel <-> VSD #1 / #2
VSD Logic Board J12 Opto- Coupled RS-485 VSD <-> Control Panel

ANALOG INPUT CONNECTIONS

Table 25 on page 285 lists the Analog inputs and the J12-3 can also be used as common, as well as chassis
circuit board they are located on. Not all of the sen- ground, or the common terminal point on the Chiller
sors are installed in every unit, as some of them are Control Board. See the wiring diagrams. The +DC
optional. The software must read the optional sensors Bus, -DC Bus and ½ DC Bus voltages are measured
if installed. The Analog input signals are typically ref- in reference to one of the other DC Bus points. For
erenced to the common (return, ground) in the system. example: +DC Bus measured to ½ DC Bus.

Table 25 - ANALOG INPUT CONNECTIONS

BOARD HEADER ANALOG INPUT
Chiller Control Board J17-11 Remote Temperature Reset
Chiller Control Board J17-12 Remote Current Limit
Chiller Control Board J17-13 Spare 1
Chiller Control Board J17-14 Spare 2
Chiller Control Board J17-15 Spare 3
Chiller Control Board J8-7 Leaving Chilled Liquid Temp Sensor
Chiller Control Board J8-8 Return Chilled Liquid Temp Sensor
Chiller Control Board J8-9 Ambient Air Temp Sensor
Chiller Control Board J19-1 Comp 1 Motor Temperature 1
Chiller Control Board J19-2 Comp 1 Motor Temperature 2
Chiller Control Board J19-3 Comp 1 Motor Temperature 3
Chiller Control Board J19-6 Comp 2 Motor Temperature 1
Chiller Control Board J19-7 Comp 2 Motor Temperature 2 8
Chiller Control Board J19-8 Comp 2 Motor Temperature 3
Chiller Control Board J21-13 Sys 1 Suction Temperature
Chiller Control Board J21-3 Sys 1 Oil Temperature
Chiller Control Board J21-16 Sys 1 Discharge Temperature
Chiller Control Board J21-6 Sys 1 Flash Tank Level Sensor
Chiller Control Board J21-20 Sys 1 Suction Pressure
Chiller Control Board J21-22 Sys 1 Oil Pressure
Chiller Control Board J21-24 Sys 1 Discharge Pressure
Chiller Control Board J22-13 Sys 2 Suction Temperature
Chiller Control Board J22-2 Sys 2 Oil Temperature
Chiller Control Board J22-16 Sys 2 Discharge Temperature
Chiller Control Board J22-6 Sys 2 Flash Tank Level Sensor
Chiller Control Board J22-20 Sys 2 Suction Pressure
Chiller Control Board J22-22 Sys 2 Oil Pressure
Chiller Control Board J22-24 Sys 2 Discharge Pressure
Chiller Control Board J20-1 Comp 3 Motor Temperature 1

JOHNSON CONTROLS 285

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

TABLE 25 - ANALOG INPUT CONNECTIONS (CONT'D)

BOARD HEADER ANALOG INPUT
Chiller Control Board J20-2 Comp 3 Motor Temperature 2
Chiller Control Board J20-3 Comp 3 Motor Temperature 3
Chiller Control Board J20-6 Comp 4 Motor Temperature 1
Chiller Control Board J20-7 Comp 4 Motor Temperature 2
Chiller Control Board J20-8 Comp 4 Motor Temperature
Chiller Control Board J23-13 Sys 3 Suction Temperature
Chiller Control Board J23-3 Sys 3 Oil Temperature
Chiller Control Board J23-16 Sys 3 Discharge Temperature
Chiller Control Board J23-6 Sys 3 Flash Tank Level Sensor
Chiller Control Board J23-20 Sys 3 Suction Pressure
Chiller Control Board J23-22 Sys 3 Oil Temperature
Chiller Control Board J23-24 Sys 3 Discharge Pressure
Chiller Control Board J24-13 Sys 4 Suction Temperature
Chiller Control Board J24-3 Sys 4 Oil Temperature
Chiller Control Board J24-16 Sys 4 Discharge Temperature
Chiller Control Board J24-6 Sys 4 Flash Tank Level Sensor
Chiller Control Board J24-20 Sys 4 Suction Pressure
Chiller Control Board J24-22 Sys 4 Oil Pressure
Chiller Control Board J24-24 Sys 4 Discharge Pressure
VSD Logic Board J1-1 to J1-2 Comp 1 Phase A Motor Current
VSD Logic Board J1-3 to J3-4 Comp 1 Phase B Motor Current
VSD Logic Board J1-5 to J1-6 Comp 1 Phase C Motor Current
VSD Logic Board J1-13 to J1-14 Comp 3 Phase A Motor Current
VSD Logic Board J1-15 to J1-16 Comp 3 Phase B Motor Current
VSD Logic Board J1-17 to J1-18 Comp 3 Phase C Motor Current
VSD Logic Board J2-1 to J2-2 Comp 2 Phase A Motor Current
VSD Logic Board J2-3 to J2-4 Comp 2 Phase B Motor Current
VSD Logic Board J2-5 to J2-6 Comp 2 Phase C Motor Current
VSD Logic Board J2-9 to J2-10 Comp 4 Phase A Motor Current
VSD Logic Board J2-11 to J2-12 Comp 4 Phase B Motor Current
VSD Logic Board J2-13 to J2-14 Comp 4 Phase C Motor Current
VSD Logic Board J3-1 +DC Bus Voltage 1
VSD Logic Board J3-2 1/2 DC Bus Voltage 1
VSD Logic Board J3-3 -DC Bus Voltage 1
VSD Logic Board J3-4 -DC Bus Voltage 2
VSD Logic Board J3-5 1/2 DC Bus Voltage 2
VSD Logic Board J3-6 +DC Bus Voltage 2
VSD Logic Board J6-8 Comp 1 IGBT Baseplate Temperature
VSD Logic Board J7-8 Comp 3 IGBT Baseplate Temperature
VSD Logic Board J8-8 Comp 2 IGBT Baseplate temperature
VSD Logic Board J9-8 Comp 4 IGBT Baseplate Temperature
VSD Logic Board R19 Comp 1 Overload Adjust
VSD Logic Board R42 Comp 3 Overload Adjust
VSD Logic Board R64 Comp 2 Overload Adjust
VSD Logic Board R86 Comp 4 Overload Adjust

286 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

DIGITAL INTPUT CONNECTIONS

Table 26 on page 287 lists the digital inputs and the J12-3 can also be used as common, as well as chassis
circuit board they are located on. The Digital input sig- ground, or the common terminal point on the Chiller
nals are typically referenced to the common (return, Control Board. See the wiring diagrams.
ground) in the system.

Table 26 - DIGITAL INPUT CONNECTIONS

BOARD HEADER ANALOG OUTPUT
Chiller Control Board J4-2 Unit Switch 1
Chiller Control Board J4-3 Unit Switch 2
Chiller Control Board J4-4 Sys 1 HPCO
Chiller Control Board J4-5 Sys 2 HPCO
Chiller Control Board J4-6 VSD Fault Relay 1
Chiller Control Board J5-1 Sys 3 HPCO
Chiller Control Board J5-2 Sys 4 HPCO
Chiller Control Board J5-3 VSD Fault Relay (Unused)
Chiller Control Board J6-2 Flow Switch
Chiller Control Board J6-3 Print
Chiller Control Board J6-4 Sys 1/3 Run Permissive
Chiller Control Board J6-5 Sys 2/4 Run Permissive
Chiller Control Board J6-6 Spare
Chiller Control Board J7-1 to J7-2 Config0
Chiller Control Board J7-3 to J7-4 Config1
Chiller Control Board J7-5 to J7-6 Config2
Chiller Control Board J7-7 to J7-8 Config3
Chiller Control Board J7-9 to J7-10 Spare 0
Chiller Control Board J7-11 to J7-12 Spare 1
VSD Logic Board J1-10 2 Compressor Select
VSD Logic Board J1-11 3 Compressor Select
VSD Logic Board J1-12 4 Compressor Select
VSD Logic Board J5-1 to J5-2
VSD Logic Board J5-3 to J5-4 8
VSD Logic Board J6-2 Comp 1 Phase A Gate Driver Fault
VSD Logic Board J6-5 Comp 1 Phase C Gate Driver Fault
VSD Logic Board J6-12 Comp 1 Phase B Gate Driver Fault
VSD Logic Board J7-2 Comp 3 Phase A Gate Driver Fault
VSD Logic Board J7-5 Comp 3 Phase C Gate Driver Fault
VSD Logic Board J7-12 Comp 3 Phase B Gate Driver Fault
VSD Logic Board J7-2 Comp 2 Phase A Gate Driver Fault
VSD Logic Board J7-5 Comp 2 Phase C Gate Driver Fault
VSD Logic Board J7-12 Comp 2 Phase B Gate Driver Fault
VSD Logic Board J8-2 Comp 4 Phase A Gate Driver Fault
VSD Logic Board J8-5 Comp 4 Phase C Gate Driver Fault
VSD Logic Board J8-12 Comp 4 Phase B Gate Driver Fault
VSD Logic Board J11-2 Phase Loss Fault 1
VSD Logic Board J11-6 Phase Loss Fault 2
VSD Logic Board SW1 Test Pushbutton
VSD Logic Board J10-5 to J10-6 Comp 1/3 Run (from control panel)
VSD Logic Board J10-7 to J10-8 Comp 2/4 (from control panel)

JOHNSON CONTROLS 287

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

ANALOG OUTPUT CONNECTIONS

Table 27 on page 288 lists the analog outputs and the
circuit board they are located on. The analog output
signals are feed to the associated control device from
the 2 wires in the associated plug.

Table 27 - ANALOG OUTPUT CONNECTIONS

BOARD HEADER ANALOG OUTPUT
Chiller Control Board J15-1 to J15-2 Sys 1 Flash Tank Feed Valve
Chiller Control Board J15-3 to J15-4 Sys 1 Flash tank Drain Valve
Chiller Control Board J15-5 to J15-6 Sys 2 flash Tank Feed Valve
Chiller Control Board J15-7 to J15-8 Sys 2 Flash Tank Drain Valve
Chiller Control Board J14-1 to J14-6 Sys 3 Flash Tank Feed Valve
Chiller Control Board J14-2 to J14-7 Sys 3 Flash Tank Drain Valve
Chiller Control Board J14-3 to J14-8 Sys 4 Flash Tank Feed Valve
Chiller Control Board J14-4 to J14-9 Sys 4 Flash Tank Feed Valve
Chiller Control Board J25-1 to J25-5 Sys 1 Condenser Fan Speed (Future)
Chiller Control Board J25-2 to J25-6 Sys 2 Condenser Fan Speed (Future)
Chiller Control Board J25-3 to J25-7 Sys 3 Condenser Fan Speed (Future)
Chiller Control Board J25-4 to J25-8 Sys 4 Condenser Fan Speed (Future)

288 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

DIGITAL OUTPUT CONNECTIONS

Table 28 on page 289 lists the digital outputs and the The 0 VAC to 120 VAC single digital outputs from the
plug/terminals of the circuit board they originate from. Relay Output Boards are referenced to neutral (Wire
Not all of the outputs will be used on every unit. Sig- 2). For example, the fan output on TB1-6 is a single
nal levels may be 12 VDC, 120 VAC, or a dry contact 120 VAC output. The 0 VDC to 12 VDC outputs from
(no voltage) closure). 120 VAC signals typically may the Chiller Control Board are referenced to common
show only one connection point; the other will be neu- (return, ground) in the system. J12-3 can also be used
tral (Wire 2). Outputs which reference multiple boards, as common, as well as chassis ground, or the common
such as “Chiller Control Board / Relay Board 1” indi- terminal point on the Chiller Control Board. See the
cate the signal originates on the Chiller Control Board wiring diagrams. See the wiring diagrams whenever
as a 0 VDC to 12 VDC digital signal (example: J9-1) there is a requirement for tracing out these signals.
that is then fed to the Relay board and output as a dry
contact closure between TB1-20 and 19. In this case,
outputs from both boards are called out in the table.

Table 28 - DIGITAL OUTPUT CONNECTIONS

BOARD HEADER ANALOG OUTPUT
Chiller Control / Relay Board 1 J9-1 / TB1-20 and 19 Evaporator Heater
Chiller Control / Relay Board 1 J9-2 / TB1-18 and 17 Sys 1/3 VSD Run
Chiller Control / Relay Board 1 J9-3 / TB1-16 and 15 Sys 1/3 Alarm
Chiller Control / Relay Board 1 J9-4 / TB1-14 and 13 Evaporator Heater 2
Chiller Control / Relay Board 1 J9-5 / TB1-12 and 11 Sys 1 SPARE
Chiller Control / Relay Board 1 J9-6 / TB1-10 and 9 SPARE
Chiller Control / Relay Board 1 J9-7/ TB1-8 and 7 SPARE
Chiller Control / Relay Board 1 J9-8 / TB1-6 Sys 1 Condenser Fans Output 1
Chiller Control / Relay Board 1 J9-9 / TB1-5 Sys 1 Condenser Fans Output 2
Chiller Control / Relay Board 1 J9-10 / TB1-4 Sys 1 Condenser Fans Output 3
Chiller Control / Relay Board 1 J9-11 / TB1-3 Sys 1 Compressor Heater
Chiller Control / Relay Board 1 J9-12 / TB1-2 Sys 1 Economizer Solenoid Valve
Chiller Control / Relay Board 2 J10-1 / TB1- 20 and 19 Evaporator Pump Start
Chiller Control / Relay Board 2 J10-2 / TB1-18 and 17 Sys 2/4 VSD Run 8
Chiller Control / Relay Board 2 J10-3 / TB1-18 and 15 Sys 2/4 Alarm
Chiller Control / Relay Board 2 J10-4 / TB1-16 and 14 Chiller Run
Chiller Control / Relay Board 2 J10-5 / TB1-12 and 11 Sys 2 SPARE
Chiller Control / Relay Board 2 J10-6 / TB1-10 and 9 SPARE
Chiller Control / Relay Board 2 J10-7 / TB1-8 and 7 SPARE
Chiller Control / Relay Board 2 J10-8 / TB1-6 Sys 2 Condenser Fans Output 1
Chiller Control / Relay Board 2 J10-9 / TB1-5 Sys 2 Condenser Fans Output 2
Chiller Control / Relay Board 2 J10-10 / TB1-4 Sys 2 Condenser Fans Output 3
Chiller Control / Relay Board 2 J10-11 / TB1-3 Sys 2 Compressor Heater
Chiller Control / Relay Board 3 J10-12 / TB1-2 Sys 2 Economizer Solenoid Valve
Chiller Control / Relay Board 3 J11-1 / TB1-20 and 19 Sys 4 Condenser Fan Output 1
Chiller Control / Relay Board 3 J11-2 / TB1-18 and 17 Sys 4 Condenser Fan Output 2
Chiller Control / Relay Board 3 J11-3 / TB1-16 and 15 Sys 4 Condenser Fan Output 3
Chiller Control / Relay Board 3 J11-4 / TB1-14 and 13 Sys 4 Compressor Heater

JOHNSON CONTROLS 289

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

TABLE 28 - DIGITAL OUTPUT CONNECTIONS (CONT'D)

BOARD HEADER ANALOG OUTPUT
Chiller Control / Relay Board 3 J11-5 / TB1-12 and 11 Sys 4 Economizer Solenoid Valve
Chiller Control / Relay Board 3 J11-6 / TB1-10 and 9 Sys 4 SPARE
Chiller Control / Relay Board 3 J11-7 / TB1-8 and 7 Sys 3 SPARE
Chiller Control / Relay Board 3 J11-8 / TB1-6 Sys 3 Condenser Fans Output 1
Chiller Control / Relay Board 3 J11-9 / TB1-5 Sys 3 Condenser Fans Output 2
Chiller Control / Relay Board 3 J11-10 / TB1-4 Sys 3 Condenser Fans Output 3
Chiller Control / Relay Board 3 J11-11 / TB1-3 Sys 3 Compressor Heater
Chiller Control / Relay Board 3 J11-12 / TB1-2 Sys 3 Economizer Solenoid Valve
VSD Logic Board J6-1 Comp 1 Phase A+ IGBT Gating Signal
VSD Logic Board J6-3 Comp 1 Phase B- IGBT Gating Signal
VSD Logic Board J6-4 Comp 1 Phase C+ IGBT Gating Signal
VSD Logic Board J6-10 Comp 1 Phase A- IGBT Gating Signal
VSD Logic Board J6-11 Comp 1 Phase B+ IGBT Gating Signal
VSD Logic Board J6-13 Comp 1 Phase C- IGBT Gating Signal
VSD Logic Board J6-14 Comp1 Enable
VSD Logic Board J7-1 Comp 3 Phase A+ IGBT Gating Signal
VSD Logic Board J7-3 Comp 3 Phase B- IGBT Gating Signal
VSD Logic Board J7-4 Comp 3 Phase C+ IGBT Gating Signal
VSD Logic Board J7-10 Comp 3 Phase A- IGBT Gating Signal
VSD Logic Board J7-11 Comp 3 Phase B+ IGBT Gating Signal
VSD Logic Board J7-13 Comp 3 Phase C- IGBT Gating Signal
VSD Logic Board J7-14 Comp 3 Enable
VSD Logic Board J8-1 Comp 2 Phase A+ IGBT Gating Signal
VSD Logic Board J8-3 Comp 2 Phase B- IGBT Gating Signal
VSD Logic Board J8-4 Comp 2 Phase C+ IGBT Gating Signal
VSD Logic Board J8-10 Comp 2 Phase A- IGBT Gating Signal
VSD Logic Board J8-11 Comp 2 Phase B+ IGBT Gating Signal
VSD Logic Board J8-13 Comp 2 Phase C- IGBT Gating Signal
VSD Logic Board J8-14 Comp 2 Enable
VSD Logic Board J9-1 Comp 4 Phase A+ IGBT Gating Signal
VSD Logic Board J9-3 Comp 4 Phase B- IGBT Gating Signal
VSD Logic Board J9-4 Comp 4 Phase C+ IGBT Gating Signal
VSD Logic Board J9-10 Comp 4 Phase A- IGBT Gating Signal
VSD Logic Board J9-11 Comp 4 Phase B+ IGBT Gating Signal
VSD Logic Board J9-13 Comp 4 Phase C- IGBT Gating Signal
VSD Logic Board J9-12 Comp 4 Enable
VSD Logic Board J11-3 Pre-charge Enable 1
VSD Logic Board J11-7 Pre-charge Enable 2
VSD Logic Board J10-1 to J10-2 VSD Fan / Pump Run
VSD Logic Board J10-3 to J10-4 VSD Fault Relay (to control panel)

290 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

BACNET, MODBUS AND YORKTALK 2

COMMUNICATIONS
Data can be read and in some cases modified using a See Figure 61 on page 292 “Control Board Connec-
serial communication BACnet, Modbus or YorkTalk 2 tions” for TB1, and TB2 locations.
network connection. This information allows commu-
nications of chiller operating parameters and external In most cases, communication parameters will need
control changes to setpoint, load limiting, and start/ to be modified. Table 30 on page 293 lists the setup
stop commands. parameters for the available protocol. In the 02478
microboard modification is accomplished by pressing
BACnet and YorkTalk 2 RS485 networks are wired to the PROGRAM, DOWN ARROW, DOWN ARROW,
the + and - terminals of TB1 for port 1 communica- DOWN ARROW, DOWN ARROW, and ENTER keys
tions. Modbus network connection has the option of in sequence. In the 03478 microboard, press the PRO-
RS232 or RS485 connection for port 2 communica- GRAM key then enter the password 5255. The list below
tions. Modbus network is wired to either TB2 or TB3 shows the displays for the values that may be modified:
as follows:
• RS-485: connect to TB2 - Network (-1) to TB2
(-1); Network (+1) to TB2 (+1)
• RS-232: connect to TB3 - Network (RX) to TB3
(TXD); Network (TX) to TB3 (RXD); Network
(GND) to TB3 (GND)

P2 PROTOCOL
DE MODIFIER ADDRESS
XXXXXXXXXX
XXXXX

P2 MANUAL MAC
DE MODIFIER OFFSET
ADDRESS XXX
XX

P2 BAUD RATE
P1 PROTOCOL
XXXXX
8
XXXXXX

P2 PARITY
P1 MANUAL MAC
XXXXX
ADDRESS XXX

P2 STOP BITS
P1 BAUD RATE
X
XXXXX

P2 HW SELECT BIT
P1 PARITY
XXXXX
XXXXX

P1 STOP BITS REAL TIME ERROR ##

X RESET 1 = YES, 0 = NO 0
Note: See TABLE 27 for error descriptions

JOHNSON CONTROLS 291

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

LD10637
Figure 61 - CONTROL BOARD CONNECTIONS

The Chiller Control Board contains a dual UART for Connections for ISN communications are on the Chiller
RS-485 and RS-232 communications. UART1 is dedi- Control Board on TB1/TB2. TB2 on the Microgateway
cated to RCC and ISN communications over an RS- is utilized for ISN comms connection. P3 is RS485+,
485 link. UART2 is dedicated to internal communica- P2 is RS485-, and USHL is the shield.
tions within the chiller. The RS-485 port is configured
The table below shows the minimum, maximum, and
for 4800 baud, 1 start bit, 8 data bits, odd parity, and 1
default values.
stop bit.

Table 29 - MINIMUM, MAXIMUM AND DEFAULT VALUES

DESCRIPTION MINIMUM MAXIMUM DEFAULT
DE MODIFIER ADDRESS -1 41943 -1
DE MODIFIER OFFSET -1 99 -1
P1 BAUD RATE 1200 76800 4800
1200, 4800, 9600, 19200, 38400, 76800, AUTO SELECTABLE
P2 BAUD RATE 1200 57600 1200
1200, 4800, 9600, 19200, 38400, 57600 SELECTABLE
P1, P2 MANUAL Mac AD-
-1 127 -1
DRESS
P1, P2 PARITY NONE IGNORE NONE
NONE, EVEN, ODD, IGNORE SELECTABLE
P1 PROTOCOL BACNET API BACNET
BACNET, API SELECTABLE
P2 PROTOCOL TERMINAL MODBUS CLIENT API
TERMINAL, MODBUS IO, MODBUS SERVER, API, MODBUS CLIENT SELECTABLE
P1, P2 STOP BITS 1 2 1
RESET REAL TIME ERROR NO YES NO

292 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

The table below shows set-up requirements for each

communication protocol.
Table 30 - VALUES REQUIRED FOR BAS COMMUNICATION
Protocol
SETTING DESCRIPTION
BACnet MS/TP Modbus RTU5 YorkTalk 2
DE MODIFIER ADDRESS 0 to 41943 (3)
1 -1
DE MODIFIER OFFSET 0 to 99 (4)
0 N/A
P1 PROTOCOL BACNET N/A N/A
P1 MANUAL MAC ADDRESS 0-127 (1)
N/A N/A
P1 BAUD RATE 9600 To 76800 or Auto Selectable (1)
N/A N/A
P1 PARITY NONE N/A N/A
P1 STOP BITS 1 N/A N/A
P2 PROTOCOL N/A MODBUS SVR N/A
P2 MANUAL MAC ADDRESS N/A 0-127 (1)
N/A
P2 BAUD RATE N/A 19,200 (2)
N/A
P2 PARITY N/A NONE(2) N/A
P2 STOP BITS N/A 1 N/A
P2 HW SELECT BIT N/A RS-485 or RS-232 (1)
N/A
RESET REAL TIME ERROR N/A N/A N/A
P1 HW SELECT BIT N/A N/A N/A
CHILLER ID N/A N/A 0
1
as Required By Network
2
or Other As Required By Network
3
number Is Multiplied By 100, Set As Required By Network
4
number Is Added To De Modifier Address, Set As Required By Network
5
unit Operating Software Version C.Mmc.13.03 Or Later Required For Modbus Protocol

Table 31 - REAL TIME ERROR NUMBERS Reboot required (cycle power) after set-
ERROR NUMBER tings are changed.
DESCRIPTION
(##)
0 ALL OK 8
1 DATUM TYPE OK TEST FAILED
2 ENGLISH TEXT TOO LONG
3 FLOATING POINT EXCEPTION Table 31 on page 293 shows the real time error num-
4 GET PACKET FAILED bers that may be encountered during communication
setup and a description of each.
5 GET TYPE FAILED
6 INVALID UNIT CONVERSION
7 INVALID HARDWARE SELECTION
8 REAL TIME FAULT
9 SPANISH TEXT TOO LONG
10 THREAD EXITED
11 THREAD FAILED
12 THREAD STALLED
13 IO BOARD RESET
14 BRAM INVALID
15 BACNET SETUP FAILED

JOHNSON CONTROLS 293

FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

BACnet and Modbus Communications Communications Data Map Notes

Chiller data that can be read and modified using spe- (See Table 32 on page 295)
cific BACnet or Modbus Register Addresses; and the
data associated with the addresses, is outlined in the 1. I PU II based units are configured for Native BAC-
following description: net MS/TP and Modbus RTU communications.
Microgateway or E-Link not required for these
ANALOG WRITE POINTS two communication protocols.
This data can be read and modified using a BACnet 2.
BACnet Object Types: 0= Analog In, 1 =
or Modbus network connection. The Modbus Register Analog Out, 2= Analog Value, 3= Bina-
Address for these points is 1025 plus AV #. ry In, 4 = Binary Output, 5= Binary Value,
8= Device, 15 = Alarm Notification (0 through
BINARY WRITE POINTS 127 are reserved ASHRAE Objects).
This data can be read and modified using a BACnet 3. W
C= Inches of water column; CFM = Cubic Feet
or Modbus network connection. The Modbus Register per Minute; FPM = Feet per Minute: PSI = Lbs
Address for these points is 1537 plus BV #. per square inch; Pa = Pascals; kPa = Kilopascals;
ANALOG READ ONLY POINTS PPM = Part per Million; kJ/kg = Kilojoules per
Kilogram.
This data can be read using a BACnet or Modbus net-
4. Water Cooled Scroll units use the same firmware
work connection and can NOT be modified using this
as Air-Cooled Scroll units, ignoring Fan Control.
connection. The Modbus Register Address for these
points is 513 plus AI #.
BINARY MONITOR ONLY POINTS
This data can be read using a BACnet or Modbus net-
work connection and can NOT be modified using this
connection. The Modbus Register Address for these
points is 1281 plus BI #.
See Table 32 on page 295 for complete list of BACnet
and Modbus registers.
The latest data map information is listed
on the Johnson Controls Equipment In-
tegration website.

294 JOHNSON CONTROLS

8/25/2014

YCAV/YCIV 1st, 2nd Systems REV K03G SECTION 1 ELINK YORK TALK 2 Micro Board: 031-02478-xxx
Item Version Checksum YORK P N Baud COMMENTS
1 C.A15.14.01 13A8 031-02476-001 4800 Std. : see Elink Installation manual PN 24-10404-9 for wiring instructions
2 C.A15.15.01 3A9E 031-02476-002 4800 Opt
3 C.A15.14.03 98E1 031-02476-001 4800 Std. : added p80,p81
4 C.A15.15.03 32D7 031-02476-002 4800 Opt added p80,p81
5 C.A09.14.03 935C 031-02476-001 4800 STD- Foreign langauge enhancements
6 C.A09.15.03 1D47 031-02476-002 4800 OPT Foreign langauge enhancements
FORM 201.23-NM2

7 C.A14.14.03 98FB 031-02476-001 4800 Std: Add p72 functionality (SCR 796)
8 C.A16.15.03 n/a 031-02476-002 4800 Opt: Add p72 functionality (SCR 796)

JOHNSON CONTROLS
9
ISSUE DATE: 09/30/2019

ENG BACnet ENG

Bacnet Object LON Profile N2 MODBUS ENG UNITS
PAGE Object LON SNVT Type POINT LIST CODE: S = STANDARD O = OPTIONAL N = NOT AVAILABLE PAGE
Ref Name Name Metasys Ref
Typ/Ins Address Scale Imper SI POINT LIST DESCRIPTION 1 2 3 4 5 6 7 8 9 10
see note 3
P03 AV1 YT2_ S01_ P03 nviYTS01p003 SNVT_count_f (51) ADF 1 0001 Div 10 °F °C Setpoint ( Start command must be active to take effect) S S S S S S S S P03
P04 AV2 YT2_ S01_ P04 nviYTS01p004 SNVT_count_f (51) ADF 2 0002 Div 10 % % ISN Current Limit Start command must be active to take effect S S S S S S S S P04
P05 AV3 YT2_ S01_ P05 nviYTS01p005 SNVT_count_f (51) ADF 3 0003 Div 10 % % ISN Sound Limit ( RSL Option must be enabled or this point ignored) S S S S S S S S P05
P06 AV4 YT2_ S01_ P06 nviYTS01p006 SNVT_count_f (51) ADF 4 0004 Div 10 P06
P07 BV1 YT2_ S01_ P07 nviYTS01p007 SNVT_switch (95) BD 1 0061 N/A 0/1 0 / 1 Start / Stop Command S S S S S S S S P07
P08 BV2 YT2_ S01_ P08 nviYTS01p008 SNVT_switch (95) BD 2 0062 N/A P08
P09 BV3 YT2_ S01_ P09 nviYTS01p009 SNVT_switch (95) BD 3 0063 N/A P09
P10 BV4 YT2_ S01_ P10 nviYTS01p010 SNVT_switch (95) BD 4 0064 N/A 0 / 1 0 / 1 History Buffer 1 Request S S S S S S S S P10
P11 AV5 YT2_ S01_ P11 nvoYTS01p011 SNVT_count_f (51) ADF 5 0005 X 10 °F °C Leaving Chilled Liquid Temp S S S S S S S S P11
P12 AV6 YT2_ S01_ P12 nvoYTS01p012 SNVT_count_f (51) ADF 6 0006 X 10 °F °C Return Chilled Liquid Temp S S S S S S S S P12
P13 AV7 YT2_ S01_ P13 nvoYTS01p013 SNVT_count_f (51) ADF 7 0007 X 10 °F °C VSD Internal Ambient Temp S S S S S S S S P13
P14 AV8 YT2_ S01_ P14 nvoYTS01p014 SNVT_count_f (51) ADF 8 0008 X 10 °F °C Sys 1 Suction Temperature S S S S S S S S P14
P15 AV9 YT2_ S01_ P15 nvoYTS01p015 SNVT_count_f (51) ADF 9 0009 X 10 °F °C Sys 1 Discharge Temperature S S S S S S S S P15
P16 AV10 YT2_ S01_ P16 nvoYTS01p016 SNVT_count_f (51) ADF 10 0010 X10 °F °C Outside Ambient Air Temperature S S S S S S S S P16
P17 AV11 YT2_ S01_ P17 nvoYTS01p017 SNVT_count_f (51) ADF 11 0011 X10 °F °C Sys 1 Oil Temperature S S S S S S S S P17
P18 AV12 YT2_ S01_ P18 nvoYTS01p018 SNVT_count_f (51) ADF 12 0012 X10 PSI BAR Sys 1 Oil Pressure (gauge) S S S S S S S S P18
P19 AV13 YT2_ S01_ P19 nvoYTS01p019 SNVT_count_f (51) ADF 13 0013 X10 PSI BAR Sys 1 Suction Pressure (gauge) S S S S S S S S P19
P20 AV14 YT2_ S01_ P20 nvoYTS01p020 SNVT_count_f (51) ADF 14 0014 X10 PSI BAR Sys 1 Discharge Pressure (gauge) S S S S S S S S P20
P21 AV15 YT2_ S01_ P21 nvoYTS01p021 SNVT_count_f (51) ADF 15 0015 X10 % % Sys 1 Compressor % Full Load Amps S S S S S S S S P21
P22 AV16 YT2_ S01_ P22 nvoYTS01p022 SNVT_count_f (51) ADF 16 0016 X1 * hrs hrs Sys 1 Total Run Hours S S S S S S S S P22
P23 AV17 YT2_ S01_ P23 nvoYTS01p023 SNVT_count_f (51) ADF 17 0017 X1 * count count Sys 1 Total Number of Starts S S S S S S S S P23
AV18
Table 32 - BACNET AND MODBUS COMMUNICATIONS DATA MAP

P24 YT2_ S01_ P24 nvoYTS01p024 SNVT_count_f (51) ADF 18 0018 X 10 °F °C Sys 1 Highest Motor Temp S S S S S S S S P24
P25 AV19 YT2_ S01_ P25 nvoYTS01p025 SNVT_count_f (51) ADF 19 0019 X 10 °F °C Sys 2 Highest Motor Temp S S S S S S S S P25
P26 AV20 YT2_ S01_ P26 nvoYTS01p026 SNVT_count_f (51) ADF 20 0020 X 10 °F °C Sys 2 Oil Temperature S S S S S S S S P26
P27 AV21 YT2_ S01_ P27 nvoYTS01p027 SNVT_count_f (51) ADF 21 0021 X 10 PSI BAR Sys 2 Oil Pressure (gauge) S S S S S S S S P27
P28 AV22 YT2_ S01_ P28 nvoYTS01p028 SNVT_count_f (51) ADF 22 0022 X 10 PSI BAR Sys 2 Suction Pressure (gauge) S S S S S S S S P28
P29 AV23 YT2_ S01_ P29 nvoYTS01p029 SNVT_count_f (51) ADF 23 0023 X 10 PSI BAR Sys 2 Discharge Pressure (gauge) S S S S S S S S P29
P30 AV24 YT2_ S01_ P30 nvoYTS01p030 SNVT_count_f (51) ADF 24 0024 X1 % % Sys 2 Compressor % Full Load Amps S S S S S S S S P30
P31 AV25 YT2_ S01_ P31 nvoYTS01p031 SNVT_count_f (51) ADF 25 0025 X1 * hrs hrs Sys 2 Total Run Hours S S S S S S S S P31
P32 AV26 YT2_ S01_ P32 nvoYTS01p032 SNVT_count_f (51) ADF 26 0026 X1 * count count Sys 2 Total Number of Starts S S S S S S S S P32
P33 AV27 YT2_ S01_ P33 nvoYTS01p033 SNVT_count_f (51) ADF 27 0027 X1 * hz hz VSD Output Frequency S S S S S S S S P33
P34 AV28 YT2_ S01_ P34 nvoYTS01p034 SNVT_count_f (51) ADF 28 0028 X1 % % Sys 1 Flash Tank Feed Valve % Open O O O O O O O O P34
P35 AV29 YT2_ S01_ P35 nvoYTS01p035 SNVT_count_f (51) ADF 29 0029 X 10 % % Sys 2 Flash Tank Feed Valve % Open O O O O O O O O P35
P36 BV5 YT2_ S01_ P36 nvoYTS01p036 SNVT_switch (95) BD 5 0065 N/A 0 / 1 0 / 1 Chiller Run S S S S S S S S P36
P37 BV6 YT2_ S01_ P37 nvoYTS01p037 SNVT_switch (95) BD 6 0066 N/A 0 / 1 0 / 1 Chiller Alarm ( 0 = no alarm, 1 = alarm ) S S S S S S S S P37
P38 BV7 YT2_ S01_ P38 nvoYTS01p038 SNVT_switch (95) BD 7 0067 N/A 0 / 1 0 / 1 Evaporator Heater Status S S S S S S S S P38
P39 BV8 YT2_ S01_ P39 nvoYTS01p039 SNVT_switch (95) BD 8 0068 N/A 0 / 1 0 / 1 Evaporator Pump Status S S S S S S S S P39
P40 BV9 YT2_ S01_ P40 nvoYTS01p040 SNVT_switch (95) BD 9 0069 N/A 0 / 1 0 / 1 Sys 1 Compressor Run Status S S S S S S S S P40
P41 BV10 YT2_ S01_ P41 nvoYTS01p041 SNVT_switch (95) BD 10 0070 N/A 0 / 1 0 / 1 Sys 2 Compressor Run Status S S S S S S S S P41
P42 BV11 YT2_ S01_ P42 nvoYTS01p042 SNVT_switch (95) BD 11 0071 N/A 0 / 1 0 / 1 Sys 1 Economizer Solenoid Valve Status S S S S S S S S P42

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295
SECTION 8 - MICROPANEL

8
8/25/2014

ENG BACnet ENG

Bacnet Object LON Profile N2 MODBUS ENG UNITS

296
PAGE Object LON SNVT Type POINT LIST CODE: S = STANDARD O = OPTIONAL N = NOT AVAILABLE PAGE
Name Name Metasys
Ref Typ/Ins Address Scale Imper SI POINT LIST DESCRIPTION 1 2 3 4 5 6 7 8 9 10 REF
see note 3
P43 BV12 YT2_ S01_ P43 nvoYTS01p043 SNVT_switch (95) BD 12 0072 N/A Sys 2 Economizer Solenoid Valve Status S S S S S S S S P43
P44 BV13 YT2_ S01_ P44 nvoYTS01p044 SNVT_switch (95) BD 13 0073 N/A P44
P45 BV14 YT2_ S01_ P45 nvoYTS01p045 SNVT_switch (95) BD 14 0074 N/A P45
P46 BV15 YT2_ S01_ P46 nvoYTS01p046 SNVT_switch (95) BD 15 0075 N/A P46
P47 BV16 YT2_ S01_ P47 nvoYTS01p047 SNVT_switch (95) BD 16 0076 N/A P47
P48 BV17 YT2_ S01_ P48 nvoYTS01p048 SNVT_switch (95) BD 17 0077 N/A P48
P49 BV18 YT2_ S01_ P49 nvoYTS01p049 SNVT_switch (95) BD 18 0078 N/A P49
P50 BV19 YT2_ S01_ P50 nvoYTS01p050 SNVT_switch (95) BD 19 0079 N/A 0/1 0 / 1 S1-1 Cooling Type: 0=Water, 1=Glycol S S S S S S S S P50
SECTION 8 - MICROPANEL

P51 BV20 YT2_ S01_ P51 nvoYTS01p051 SNVT_switch (95) BD 20 0080 N/A 0/1 0 / 1 Local/Remote Control Mode: 0 = Local, 1 = Remote S S S S S S S S P51
P52 BV21 YT2_ S01_ P52 nvoYTS01p052 SNVT_switch (95) BD 21 0081 N/A 0/1 0 / 1 Display Units Mode: 0 = Imperial, 1 = SI S S S S S S S S P52
P53 BV22 YT2_ S01_ P53 nvoYTS01p053 SNVT_switch (95) BD 22 0082 N/A P53
P54 BV23 YT2_ S01_ P54 nvoYTS01p054 SNVT_switch (95) BD 23 0083 N/A P54
P55 BV24 YT2_ S01_ P55 nvoYTS01p055 SNVT_switch (95) BD 24 0084 N/A P55
P56 MV1 YT2_ S01_ P56 nvoYTS01p056 SNVT_count_f (51) ADI 1 0030 X1 enum enum *Sys 1 Operational Code S S S S S S S S P56
P57 MV2 YT2_ S01_ P57 nvoYTS01p057 SNVT_count_f (51) ADI 2 0031 X1 enum enum *Sys 1 Fault Code S S S S S S S S P57
P58 MV3 YT2_ S01_ P58 nvoYTS01p058 SNVT_count_f (51) ADI 3 0032 X1 enum enum *Sys 2 Operational Code S S S S S S S S P58
P59 MV4 YT2_ S01_ P59 nvoYTS01p059 SNVT_count_f (51) ADI 4 0033 X1 enum enum *Sys 2 Fault Code S S S S S S S S P59
P60 MV5 YT2_ S01_ P60 nvoYTS01p060 SNVT_count_f (51) ADI 5 0034 X1 % % Sys 1 Flash Tank Level (%) S S S S S S S S P60
P61 MV6 YT2_ S01_ P61 nvoYTS01p061 SNVT_count_f (51) ADI 6 0035 X1 count count Sys 1 Condenser Fan Stages Running (0-7) S S S S S S S S P61
P62 MV7 YT2_ S01_ P62 nvoYTS01p062 SNVT_count_f (51) ADI 7 0036 X1 count count Sys 2 Flash Tank Level (%) S S S S S S S S P62
P63 MV8 YT2_ S01_ P63 nvoYTS01p063 SNVT_count_f (51) ADI 8 0037 X1 count count Sys 2 Condenser Fan Stages Running (0-7) S S S S S S S S P63
P64 MV9 YT2_ S01_ P64 nvoYTS01p064 SNVT_count_f (51) ADI 9 0038 X1 count count Lead System Number S S S S S S S S P64
P65 MV10 YT2_ S01_ P65 nvoYTS01p065 SNVT_count_f (51) ADI 10 0039 X1 enum enum Sys 1 & 2 Debug Code ( internal use only) N N N N N N N N P65
P66 AV30 YT2_ S01_ P66 nvoYTS01p066 SNVT_count_f (51) ADF 30 0040 X1 °F °C Local Leaving Chilled Liquid Setpoint S S S S S S S S P66
P67 AV31 YT2_ S01_ P67 nvoYTS01p067 SNVT_count_f (51) ADF 31 0041 X1 °F °C Low Leaving Chilled Liquid Temp Cutout S S S S S S S S P67
P68 AV32 YT2_ S01_ P68 nvoYTS01p068 SNVT_count_f (51) ADF 32 0042 X1 % % Sys 1 Flash Tank Drain Valve % Open S S S S S S S S P68
P69 AV33 YT2_ S01_ P69 nvoYTS01p069 SNVT_count_f (51) ADF 33 0043 X1 % % Sys 2 Flash Tank Drain Valve % Open S S S S S S S S P69
P70 AV34 YT2_ S01_ P70 nvoYTS01p070 SNVT_count_f (51) ADF 34 0044 X 10 PSI BAR Low Suction Pressure Cutout S S S S S S S S P70
P71 AV35 YT2_ S01_ P71 nvoYTS01p071 SNVT_count_f (51) ADF 35 0045 X1 * volts volts VSD DC Bus Voltage S S S S S S S S P71
P72 AV36 YT2_ S01_ P72 nvoYTS01p072 SNVT_count_f (51) ADF 36 0046 X1 * °F °C Remote Leaving Chilled Liquid Setpoint N N N N N N S S P72
P73 AV37 YT2_ S01_ P73 nvoYTS01p073 SNVT_count_f (51) ADF 37 0047 X1 * °F °C Sys 1 Suction Superheat S S S S S S S S P73
P74 AV38 YT2_ S01_ P74 nvoYTS01p074 SNVT_count_f (51) ADF 38 0048 X1 * °F °C Cooling Range S S S S S S S S P74
P75 AV39 YT2_ S01_ P75 nvoYTS01p075 SNVT_count_f (51) ADF 39 0049 X1 * °F °C Sys 1 Discharge Superheat S S S S S S S S P75
P76 AV40 YT2_ S01_ P76 nvoYTS01p076 SNVT_count_f (51) ADF 40 0050 X1 °F °C Sys 2 Suction Temperature S S S S S S S S P76
P77 AV41 YT2_ S01_ P77 nvoYTS01p077 SNVT_count_f (51) ADF 41 0051 X1 °F °C Sys 2 Discharge Temperature S S S S S S S S P77
P78 AV42 YT2_ S01_ P78 nvoYTS01p078 SNVT_count_f (51) ADF 42 0052 X1 °F °C Sys 2 Suction Superheat S S S S S S S S P78
P79 AV 43 YT2_ S01_ P79 nvoYTS01p079 SNVT_count_f (51) ADF 43 0053 X1 °F °C Sys 2 Discharge Superheat S S S S S S S S P79
P80 BV25 YT2_ S01_ P80 nvoYTS01p080 SNVT_switch (95) BD 25 0085 N/A 0/1 0/1 Sys 1 Lockout N N S S S S S S P80
P81 BV26 YT2_ S01_ P81 nvoYTS01p081 SNVT_switch (95) BD 26 0086 N/A 0/1 0/1 Sys 2 Lockout N N S S S S S S P81
P82 BV27 YT2_ S01_ P82 nvoYTS01p082 SNVT_switch (95) BD 27 0087 N/A P82
P83 BV28 YT2_ S01_ P83 nvoYTS01p083 SNVT_switch (95) BD 28 0088 N/A P83
TABLE 32 - BACNET AND MODBUS COMMUNICATIONS DATA MAP (CONT’D)

P84 BV29 YT2_ S01_ P84 nvoYTS01p084 SNVT_switch (95) BD 29 0089 N/A P84

NOTES
LON SNVTS Used: SNVT_count (8), SNVT_lev_percent (81), SNVT_temp_p (105), SNVT_switch (95) , SNVT_time_minute (123) , SNVT_freq_hz (76) , SNVT_amp (01) , SNVT_elec_kwh (13) , SNVT_power_kilo (83) ,
1
SNVT_volt (44) , SNVT_volt_ac (138), SNVT_press_p (87)
2
MODBUS scaling factors indicated in BOLD with an (*) asterisk are User Configurable, by a field technician if necessary. All Modbus values are of the type SIGNED with the exception of the User Configurabale values that are all
3
UNSIGNED. Modbus Function Types Supported (ENG P03-P06 = Types 03, 06, 16) , ( ENG P07- P10 = 01, 03, 05, 15, 06, 16), (ENG P11-P35, P56-P79) = 03, 04) , (ENG P36-P55, P80 -P84 = 01, 02, 03)
4 BACnet Engineering Units shown with an (*) Asterisk will be assigned a BACnet Eng Unit type of (95) ie NO UNITS.
5 Status Codes: Special Display characters such as (, ), [, ], {, },/,\,%,< and > are not compatible with Elink N2 formats. Substitute text strings , "-", PCT, GTN will be used .
6 Status Codes: Status Code Text string lengths are limited to 60 total characters (including spaces)
7
8
9
10
NOTE: The Appropriate Product Code Listing Summary Should Accompany Document

JOHNSON CONTROLS
ISSUE DATE: 09/30/2019
FORM 201.23-NM2

Revision: YCAV_YCIV BAS (Rev K_03g).xlsx Tab: YCAV and YCIV Property of Johnson Controls, York, PA Page: 2
8/25/2014

YCAV/YCIV 3rd, 4th Systems SECTION 2 ELINK YORK TALK 2 Micro Board: 031-02478-xxx
ENG BACnet MODBUS ENG UNITS ENG
Bacnet Object LON Profile N2 POINT LIST CODE: S = STANDARD O = OPTIONAL N = NOT AVAILABLE
PAGE Object LON SNVT Type PAGE
Ref Name Name Metasys Ref
Typ/Ins
Address Scale Imper SI POINT LIST DESCRIPTION 1 2 3 4 5 6 7 8 9 10
see note 3
P03 AV101 YT2_ S02_ P03 nviYTS02p003 SNVT_count_f (51) ADF 44 0101 Div 10 P03
FORM 201.23-NM2

P04 AV102 YT2_ S02_ P04 nviYTS02p004 SNVT_count_f (51) ADF 45 0102 Div 10 P04
P05 AV103 YT2_ S02_ P05 nviYTS02p005 SNVT_count_f (51) ADF 46 0103 Div 10 P05

JOHNSON CONTROLS
P06 AV104 YT2_ S02_ P06 nviYTS02p006 SNVT_count_f (51) ADF 47 0104 Div 10 P06
ISSUE DATE: 09/30/2019

P07 BV101 YT2_ S02_ P07 nviYTS02p007 SNVT_switch (95) BD 30 0161 N/A P07
P08 BV102 YT2_ S02_ P08 nviYTS02p008 SNVT_switch (95) BD 31 0162 N/A P08
P09 BV103 YT2_ S02_ P09 nviYTS02p009 SNVT_switch (95) BD 32 0163 N/A P09
P10 BV104 YT2_ S02_ P10 nviYTS02p010 SNVT_switch (95) BD 33 0164 N/A P10
P11 AV105 YT2_ S02_ P11 nvoYTS02p011 SNVT_count_f (51) ADF 48 0105 X 10 °F °C Leaving Chilled Liquid Temp S S S S S S S S P11
P12 AV106 YT2_ S02_ P12 nvoYTS02p012 SNVT_count_f (51) ADF 49 0106 X 10 °F °C Return Chilled Liquid Temp S S S S S S S S P12
P13 AV107 YT2_ S02_ P13 nvoYTS02p013 SNVT_count_f (51) ADF 50 0107 X 10 °F °C VSD Internal Ambient Temp 2 S S S S S S S S P13
P14 AV108 YT2_ S02_ P14 nvoYTS02p014 SNVT_count_f (51) ADF 51 0108 X 10 °F °C Sys 3 Suction Temperature S S S S S S S S P14
P15 AV109 YT2_ S02_ P15 nvoYTS02p015 SNVT_count_f (51) ADF 52 0109 X 10 °F °C Sys 3 Discharge Temperature S S S S S S S S P15
P16 AV110 YT2_ S02_ P16 nvoYTS02p016 SNVT_count_f (51) ADF 53 0110 X10 P16
P17 AV111 YT2_ S02_ P17 nvoYTS02p017 SNVT_count_f (51) ADF 54 0111 X10 °F °C Sys 3 Oil Temperature S S S S S S S S P17
P18 AV112 YT2_ S02_ P18 nvoYTS02p018 SNVT_count_f (51) ADF 55 0112 X10 PSI BAR Sys 3 Oil Pressure S S S S S S S S P18
P19 AV113 YT2_ S02_ P19 nvoYTS02p019 SNVT_count_f (51) ADF 56 0113 X10 PSI BAR Sys 3 Suction Pressure S S S S S S S S P19
P20 AV114 YT2_ S02_ P20 nvoYTS02p020 SNVT_count_f (51) ADF 57 0114 X10 PSI BAR Sys 3 Discharge Pressure S S S S S S S S P20
P21 AV115 YT2_ S02_ P21 nvoYTS02p021 SNVT_count_f (51) ADF 58 0115 X10 % % Sys 3 Compressor % Full Load Amps S S S S S S S S P21
P22 AV116 YT2_ S02_ P22 nvoYTS02p022 SNVT_count_f (51) ADF 59 0116 X1 * hrs hrs Sys 3 Total Run Hours S S S S S S S S P22
P23 AV117 YT2_ S02_ P23 nvoYTS02p023 SNVT_count_f (51) ADF 60 0117 X1 * count count Sys 3 Total # of Starts S S S S S S S S P23
P24 AV118 YT2_ S02_ P24 nvoYTS02p024 SNVT_count_f (51) ADF 61 0118 X1 °F °C Sys 3 Highest Motor Temp S S S S S S S S P24
P25 AV119 YT2_ S02_ P25 nvoYTS02p025 SNVT_count_f (51) ADF 62 0119 X1 °F °C Sys 4 Highest Motor Temp S S S S S S S S P25
P26 AV120 YT2_ S02_ P26 nvoYTS02p026 SNVT_count_f (51) ADF 63 0120 X1 °F °C Sys 4 Oil Temperature S S S S S S S S P26
P27 AV121 YT2_ S02_ P27 nvoYTS02p027 SNVT_count_f (51) ADF 64 0121 X1 PSI BAR Sys 4 Oil Pressure S S S S S S S S P27
P28 AV122 YT2_ S02_ P28 nvoYTS02p028 SNVT_count_f (51) ADF 65 0122 X1 PSI BAR Sys 4 Suction Pressure S S S S S S S S P28
P29 AV123 YT2_ S02_ P29 nvoYTS02p029 SNVT_count_f (51) ADF 66 0123 X1 PSI BAR Sys 4 Discharge Pressure S S S S S S S S P29
P30 AV124 YT2_ S02_ P30 nvoYTS02p030 SNVT_count_f (51) ADF 67 0124 X1 % % Sys 4 Compressor % Full Load Amps S S S S S S S S P30
P31 AV125 YT2_ S02_ P31 nvoYTS02p031 SNVT_count_f (51) ADF 68 0125 X1 * hrs hrs Sys 4 Total Run Hours S S S S S S S S P31
P32 AV126 YT2_ S02_ P32 nvoYTS02p032 SNVT_count_f (51) ADF 69 0126 X1 * count count Sys 4 Total # of Starts S S S S S S S S P32
P33 AV127 YT2_ S02_ P33 nvoYTS02p033 SNVT_count_f (51) ADF 70 0127 X1 * hz hz VSD Output Frequency 2 S S S S S S S S P33
P34 AV128 YT2_ S02_ P34 nvoYTS02p034 SNVT_count_f (51) ADF 71 0128 X1 % % Sys 3 Flask Tank Feed Valve % Open O O O O O O O O P34
P35 AV129 YT2_ S02_ P35 nvoYTS02p035 SNVT_count_f (51) ADF 72 0129 X1 % % Sys 4 Flask Tank Feed Valve % Open O O O O O O O O P35
P36 BV105 YT2_ S02_ P36 nvoYTS02p036 SNVT_switch (95) BD 34 0165 N/A P36
P37 BV106 YT2_ S02_ P37 nvoYTS02p037 SNVT_switch (95) BD 35 0166 N/A Chiller Alarm ( 0 = no alarm, 1 = alarm ) P37
P38 BV107 YT2_ S02_ P38 nvoYTS02p038 SNVT_switch (95) BD 36 0167 N/A P38
P39 BV108 YT2_ S02_ P39 nvoYTS02p039 SNVT_switch (95) BD 37 0168 N/A P39
P40 BV109 YT2_ S02_ P40 nvoYTS02p040 SNVT_switch (95) BD 38 0169 N/A 0/1 0 / 1 Sys 3 Compressor Run Status S S S S S S S S P40
TABLE 32 - BACNET AND MODBUS COMMUNICATIONS DATA MAP (CONT’D)

P41 BV110 YT2_ S02_ P41 nvoYTS02p041 SNVT_switch (95) BD 39 0170 N/A 0/1 0 / 1 Sys 4 Compressor Run Status S S S S S S S S P41
P42 BV111 YT2_ S02_ P42 nvoYTS02p042 SNVT_switch (95) BD 40 0171 N/A 0/1 0 / 1 Sys 3 Economizer Solenoid Valve Status S S S S S S S S P42

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297
SECTION 8 - MICROPANEL

8
8/25/2014

ENG
ENG BACnet MODBUS ENG UNITS
Bacnet Object LON Profile N2

298
POINT LIST CODE: S = STANDARD O = OPTIONAL N = NOT AVAILABLE PAGE
PAGE Object LON SNVT Type
Name Name Metasys
Ref Typ/Ins
Address Scale Imper SI POINT LIST DESCRIPTION 1 2 3 4 5 6 7 8 9 10 REF
see note 3
P43 BV112 YT2_ S02_ P43 nvoYTS02p043 SNVT_switch (95) BD 41 0172 N/A 0/1 0 / 1 Sys 4 Economizer Solenoid Valve Status S S S S S S S S P43
P44 BV113 YT2_ S02_ P44 nvoYTS02p044 SNVT_switch (95) BD 42 0173 N/A P44
P45 BV114 YT2_ S02_ P45 nvoYTS02p045 SNVT_switch (95) BD 43 0174 N/A P45
P46 BV115 YT2_ S02_ P46 nvoYTS02p046 SNVT_switch (95) BD 44 0175 N/A P46
P47 BV116 YT2_ S02_ P47 nvoYTS02p047 SNVT_switch (95) BD 45 0176 N/A P47
P48 BV117 YT2_ S02_ P48 nvoYTS02p048 SNVT_switch (95) BD 46 0177 N/A P48
P49 BV118 YT2_ S02_ P49 nvoYTS02p049 SNVT_switch (95) BD 47 0178 N/A P49
SECTION 8 - MICROPANEL

P50 BV119 YT2_ S02_ P50 nvoYTS02p050 SNVT_switch (95) BD 48 0179 N/A P50
P51 BV120 YT2_ S02_ P51 nvoYTS02p051 SNVT_switch (95) BD 49 0180 N/A P51
P52 BV121 YT2_ S02_ P52 nvoYTS02p052 SNVT_switch (95) BD 50 0181 N/A P52
P53 BV122 YT2_ S02_ P53 nvoYTS02p053 SNVT_switch (95) BD 51 0182 N/A P53
P54 BV123 YT2_ S02_ P54 nvoYTS02p054 SNVT_switch (95) BD 52 0183 N/A P54
P55 BV124 YT2_ S02_ P55 nvoYTS02p055 SNVT_switch (95) BD 53 0184 N/A P55
P56 MV101 YT2_ S02_ P56 nvoYTS02p056 SNVT_count_f (51) ADI 11 0130 X1 enum enum Sys 3 Operational Code S S S S S S S S P56
P57 MV102 YT2_ S02_ P57 nvoYTS02p057 SNVT_count_f (51) ADI 12 0131 X1 enum enum Sys 3 Fault Code S S S S S S S S P57
P58 MV103 YT2_ S02_ P58 nvoYTS02p058 SNVT_count_f (51) ADI 13 0132 X1 enum enum Sys 4 Operational Code S S S S S S S S P58
P59 MV104 YT2_ S02_ P59 nvoYTS02p059 SNVT_count_f (51) ADI 14 0133 X1 enum enum Sys 4 Fault Code S S S S S S S S P59
P60 MV105 YT2_ S02_ P60 nvoYTS02p060 SNVT_count_f (51) ADI 15 0134 X1 % % Sys 3 Flash Tank Level % S S S S S S S S P60
P61 MV106 YT2_ S02_ P61 nvoYTS02p061 SNVT_count_f (51) ADI 16 0135 X1 count count Sys 3 Condenser Fan Stage ( 0-7 ) S S S S S S S S P61
P62 MV107 YT2_ S02_ P62 nvoYTS02p062 SNVT_count_f (51) ADI 17 0136 X1 count count Sys 4 Flash Tank Level % S S S S S S S S P62
P63 MV108 YT2_ S02_ P63 nvoYTS02p063 SNVT_count_f (51) ADI 18 0137 X1 count count Sys 4 Condenser Fan Stage ( 0-7) S S S S S S S S P63
P64 MV109 YT2_ S02_ P64 nvoYTS02p064 SNVT_count_f (51) ADI 19 0138 X1 P64
P65 MV110 YT2_ S02_ P65 nvoYTS02p065 SNVT_count_f (51) ADI 20 0139 X1 enum enum Sys 3 & 4 Debug Code S S S S S S S S P65
P66 AV130 YT2_ S02_ P66 nvoYTS02p066 SNVT_count_f (51) ADF 73 0140 X1 P66
P67 AV131 YT2_ S02_ P67 nvoYTS02p067 SNVT_count_f (51) ADF 74 0141 X1 P67
P68 AV132 YT2_ S02_ P68 nvoYTS02p068 SNVT_count_f (51) ADF 75 0142 X1 % % Sys 3 Flash Tank Drain Valve % Open S S S S S S S S P68
P69 AV133 YT2_ S02_ P69 nvoYTS02p069 SNVT_count_f (51) ADF 76 0143 X1 % % Sys 4 Flash Tank Drain Valve % Open S S S S S S S S P69
P70 AV134 YT2_ S02_ P70 nvoYTS02p070 SNVT_count_f (51) ADF 77 0144 X 10 PSI BAR P70
P71 AV135 YT2_ S02_ P71 nvoYTS02p071 SNVT_count_f (51) ADF 78 0145 X1 * volts volts VSD DC Bus Voltage 2 S S S S S S S S P71
P72 AV136 YT2_ S02_ P72 nvoYTS02p072 SNVT_count_f (51) ADF 79 0146 X1 * P72
P73 AV137 YT2_ S02_ P73 nvoYTS02p073 SNVT_count_f (51) ADF 80 0147 X1 * °F °C Sys 3 Suction Superheat S S S S S S S S P73
P74 AV138 YT2_ S02_ P74 nvoYTS02p074 SNVT_count_f (51) ADF 81 0148 X1 * P74
P75 AV139 YT2_ S02_ P75 nvoYTS02p075 SNVT_count_f (51) ADF 82 0149 X1 * °F °C Sys 3 Discharge Superheat S S S S S S S S P75
P76 AV140 YT2_ S02_ P76 nvoYTS02p076 SNVT_count_f (51) ADF 83 0150 X1 °F °C Sys 4 Suction Temperature S S S S S S S S P76
P77 AV141 YT2_ S02_ P77 nvoYTS02p077 SNVT_count_f (51) ADF 84 0151 X1 °F °C Sys 4 Discharge Temperature S S S S S S S S P77
P78 AV142 YT2_ S02_ P78 nvoYTS02p078 SNVT_count_f (51) ADF 85 0152 X1 °F °C Sys 4 Suction Superheat S S S S S S S S P78
P79 AV143 YT2_ S02_ P79 nvoYTS02p079 SNVT_count_f (51) ADF 86 0153 X1 °F °C Sys 4 Discharge Superheat S S S S S S S S P79
P80 BV125 YT2_ S02_ P80 nvoYTS02p080 SNVT_switch (95) BD 54 0185 N/A 0/1 0/1 Sys 3 Lockout N N S S N N S S P80
P81 BV126 YT2_ S02_ P81 nvoYTS02p081 SNVT_switch (95) BD 55 0186 N/A 0/1 0/1 Sys 4 Lockout N N S S N N S S P81
P82 BV127 YT2_ S02_ P82 nvoYTS02p082 SNVT_switch (95) BD 56 0187 N/A P82
TABLE 32 - BACNET AND MODBUS COMMUNICATIONS DATA MAP (CONT’D)

P83 BV128 YT2_ S02_ P83 nvoYTS02p083 SNVT_switch (95) BD 57 0188 N/A P83
P84 BV129 YT2_ S02_ P84 nvoYTS02p084 SNVT_switch (95) BD 58 0189 N/A P84

JOHNSON CONTROLS
ISSUE DATE: 09/30/2019
FORM 201.23-NM2

Revision: YCAV_YCIV BAS (Rev K_03g).xlsx Tab: YCAV and YCIV Property of Johnson Controls, York, PA Page: 4
8/25/2014

ENG Operational Code ENG Fault/Inhibit Code ENG Fault/Inhibit Code (cont)
PAGE PAGE PAGE
P56,58 C_OPER.CODE P57,59 C_FAULT.CODE P57,59 C_FAULT.CODE
63 Manual Override 1 Low Ambient Temperature 52 Reserved 52
64 Daily Schedule Shutdown 2 High Ambient Temperature 53 Reserved 53
65 Unit Switch OFF 3 Low Chilled Liquid Temperature 54 Reserved 54
66 Remote Controlled Shutdown 4 SPARE0 55 Reserved 55
FORM 201.23-NM2

67 Loss of External Communications 5 Low RTC Battery Voltage 56 Reserved 56

68 Flow Switch Shutdown 6 Invalid Number of Comp ressors Selected 57 Reserved 57

JOHNSON CONTROLS
69 VSD Cooling Shutdown 7 VSD Communications Failure 58 Reserved 58
ISSUE DATE: 09/30/2019

70 Serial Number Shutdown 8 Pre-charge Low DC Bus Voltage 59 Reserved 59

71 SPARE 9 Pre-charge DC Bus Voltage Imbalance 60 Reserved 60
72 SPARE 10 Bus Voltage High DC 61 Reserved 61
73 SPARE 11 Bus Voltage Low DC 62 Reserved 62
74 No Run Permissive 12 Voltage Imbalance DC Bus
75 Anti-Recycle Timer Active 13 High VSD Ambient Temperature
76 System Switch OFF 14 Single Phase Input
77 System Not Running 15 VSD Power Supply Fault
78 System Running 16 VSD Logic Board Fault
79 Discharge Pressure Limiting 17 Motor Current Overload (Hardware)
80 Suction Pressure Limiting 18 CT Plug Fault
81 Motor Current Limiting 19 Reserved 19
82 Motor Temperature Limiting 20 Reserved 20
83 ISN Motor Current Limiting 21 Reserved 21
84 Remote Motor Current Limiting 22 Reserved 22
85 System Pumping Down 23 Reserved 23
86 VSD PreCharging 24 Reserved 24
87 VSD Baseplate Temp Limiting 25 Reserved 25
88 VSD Internal Ambient Temp Limiting 26 Reserved 26
89 Sound Limiting 27 High Discharge Pressure (Software)
90 ISN Sound Limiting 28 High Differential Oil Pressure
91 Remote Sound Limiting 29 Low Differential Oil Pressure
92 Pulldown Motor Current Limiting 30 Low Suction Pressure
93 Cooling Demand Shutdown 31 High Discharge Temperature
94 Reserved 94 32 High Oil Temperature
95 Reserved 95 33 Low Suction Superheat
96 Reserved 96 34 Sensor Failure
35 Low Motor Current
36 High Motor Temperature
37 Pre-charge Low DC Bus Voltage
38 Pre-charge DC Bus Voltage Imbalance
39 High DC Bus Voltage
40 Low DC Bus Voltage
41 DC Bus Voltage Imbalance
TABLE 32 - BACNET AND MODBUS COMMUNICATIONS DATA MAP (CONT’D)

42 High Motor Current

43 Motor Current Overload (Software)
44 IGBT Gate Driver Fault
45 High Baseplate Temperature
46 Single Phase Input
47 VSD Run Signal Fault
48 High Discharge Press (Hardware – HPCO)
49 High Flash Tank Level
50 Control Voltage Fault
51 Low Discharge Superheat

Revision: YCAV_YCIV BAS (Rev K_03g).xlsx Tab: YCAV and YCIV Property of Johnson Controls, York, PA Page: 5

299
SECTION 8 - MICROPANEL

8
FORM 201.23-NM2
SECTION 8 - MICROPANEL
ISSUE DATE: 09/30/2019

Yorktalk 2 Communications Transmitted Data

Received Data (Control Data) After receiving a valid transmission from the Micro-
Gateway or E-Link, the unit will transmit either op-
The unit receives eight data values from the Micro-
erational data or history buffer data depending on the
Gateway or E-Link. The first four are analog values
“History Buffer Request” on ENG PAGE 10. Data
and the last four are digital values. These eight data
must be transmitted for every page under feature 54.
values are used as control parameters when in RE-
If there is no value to be sent to a particular page, a
MOTE mode. When the unit is in LOCAL mode, these
zero will be sent. Table 33 on page 301 “Yorktalk 2
eight values are ignored. If the unit receives no valid
Communications Data Map” shows the data values and
YorkTalk 2 transmission for 5 minutes it will revert
page listings for this unit.
back to all local control values. Table 33 on page 301
“Yorktalk 2 Communications Data Map” lists the con- The latest point map information is listed
trol parameters. These values are found under feature on the Johnson Controls Equipment In-
54 in the MicroGateway or E-Link. tegration website.

300 JOHNSON CONTROLS

02/17/2017

YCAV YCIV Modbus, BACnet MS/TP, N2 Data Map Board: 031-03478

Item Version York P/N Comments
Y.ACS.14.03, Y.ACS.15.03, Y.ACS.16.03, Y.ACS.17.03, 031-03476-001, -002, -003, -
1 Y.ACS.18.03, Y.ACS.19.03, Z.ACS.14.04, Z.ACS.15.03M, 004, -005, -202, -101, -210, - New
Z.ACS.17.03, Z.ACS.19.04, Z.ACS.31.03 104, -AGR, -225
FORM 201.23-NM2

JOHNSON CONTROLS
3
ISSUE DATE: 09/30/2019

4
5
6
7
8
9
10

Item BACnet Modbus

ANALOG WRITE POINTS

1 REM_SETP AV1 1026 03,06,16 Div 10 ADF 1 °F °C Remote Setpoint S
2 DMD_LIMIT AV2 1027 03,06,16 Div 10 ADF 2 % FLA % FLA Remote Current Limit Setpoint S
3 SND_LIMIT AV3 1028 03,06,16 Div 10 ADF 3 % % Remote Sound Limit S
4 SPARE AV1 AV4 1029 03,06,16 Div 10 ADF 4 None None Spare N
BINARY WRITE POINTS
5 START_STOP BV1 1538 01,03,05,06,15 N/A BD 1 0/1 0/1 Remote Start / Stop Command [0=Stop, 1=Run] S
6 SPARE_BV1 BV2 1539 01,03,05,06,15 N/A BD 2 0/1 0/1 Spare N
7 SPARE_BV2 BV3 1540 01,03,05,06,15 N/A BD 3 0/1 0/1 Spare N
Table 33 - YORKTALK 2 COMMUNICATIONS DATA MAP

8 SPARE_BV3 BV3 1541 01,03,05,06,15 N/A BD 3 0/1 0/1 Spare N

ANALOG READ ONLY POINTS
9 LCHLT AI1 514 03,04 x10 ADF 5 °F °C Leaving Chilled Liquid Temperature S
10 ECHLT AI2 515 03,04 x10 ADF 6 °F °C Entering Chilled Liquid Temperature S
11 VSD_IA_TEMP AI3 516 03,04 x10 ADF 7 °F °C VSD Internal Ambient Temperature S
12 S1_SUCT_TEMP AI4 517 03,04 x10 ADF 8 °F °C Sys 1 Suction Temperature S
13 S2_SUCT_TEMP AI5 518 03,04 x10 ADF 9 °F °C Sys 2 Suction Temperature S
14 S3_SUCT_TEMP AI6 519 03,04 x10 ADF 10 °F °C Sys 3 Suction Temperature S
15 S4_SUCT_TEMP AI7 520 03,04 x10 ADF 11 °F °C Sys 4 Suction Temperature S
16 S1_DSCH_TEMP AI8 521 03,04 x10 ADF 12 °F °C Sys 1 Discharge Temperature S
17 S2_DSCH_TEMP AI9 522 03,04 x10 ADF 13 °F °C Sys 2 Discharge Temperature S
18 S3_DSCH_TEMP AI10 523 03,04 x10 ADF 14 °F °C Sys 3 Discharge Temperature S
19 S4_DSCH_TEMP AI11 524 03,04 x10 ADF 15 °F °C Sys 4 Discharge Temperature S
20 OAT AI12 525 03,04 x10 ADF 16 °F °C Ambient Air Temperature S
21 S1_OIL_TEMP AI13 526 03,04 x10 ADF 17 °F °C Sys 1 Oil Temperature S
22 S2_OIL_TEMP AI14 527 03,04 x10 ADF 18 °F °C Sys 2 Oil Temperature S
23 S3_OIL_TEMP AI15 528 03,04 x10 ADF 19 °F °C Sys 3 Oil Temperature S
24 S4_OIL_TEMP AI16 529 03,04 x10 ADF 20 °F °C Sys 4 Oil Temperature S
25 S1_OIL_PRESS AI17 530 03,04 x10 ADF 21 PSI BAR Sys 1 Oil Pressure S
26 S2_OIL_PRESS AI18 531 03,04 x10 ADF 22 PSI BAR Sys 2 Oil Pressure S
27 S3_OIL_PRESS AI19 532 03,04 x10 ADF 23 PSI BAR Sys 3 Oil Pressure S
28 S4_OIL_PRESS AI20 533 03,04 x10 ADF 24 PSI BAR Sys 4 Oil Pressure S
29 S1_SUCT_PRES AI21 534 03,04 x10 ADF 25 PSI BAR Sys 1 Suction Pressure S
30 S2_SUCT_PRES AI22 535 03,04 x10 ADF 26 PSI BAR Sys 2 Suction Pressure S
31 S3_SUCT_PRES AI23 536 03,04 x10 ADF 27 PSI BAR Sys 3 Suction Pressure S

Property of Johnson Controls, Inc.

YCAV and YCIV Native Subject to change without notice. 1 of 4

301
SECTION 8 - MICROPANEL

8
02/17/2017

302
Item BACnet Modbus
Modbus Modbus Data Type Engineering Units Point List Code: S = Standard O = Optional N = Not Available
Ref BACnet Name Object Scaling (See N2 Metasys
Address Supported
Num Instance Note 5) Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
32 S4_SUCT_PRES AI24 537 03,04 x10 ADF 28 PSI BAR Sys 4 Suction Pressure S
33 S1_DSCH_PRES AI25 538 03,04 x10 ADF 29 PSI BAR Sys 1 Discharge Pressure S
34 S2_DSCH_PRES AI26 539 03,04 x10 ADF 30 PSI BAR Sys 2 Discharge Pressure S
35 S3_DSCH_PRES AI27 540 03,04 x10 ADF 31 PSI BAR Sys 3 Discharge Pressure S
36 S4_DSCH_PRES AI28 541 03,04 x10 ADF 32 PSI BAR Sys 4 Discharge Pressure S
37 S1_MC_FLA AI29 542 03,04 x10 ADF 33 % % Sys 1 Motor Current FLA S
SECTION 8 - MICROPANEL

38 S2_MC_FLA AI30 543 03,04 x10 ADF 34 % % Sys 2 Motor Current FLA S
39 S3_MC_FLA AI31 544 03,04 x10 ADF 35 % % Sys 3 Motor Current FLA S
40 S4_MC_FLA AI32 545 03,04 x10 ADF 36 % % Sys 4 Motor Current FLA S
41 S1_OP_HRS AI33 546 03,04 x1 ADF 37 None None Sys 1 Operating Hours S
42 S2_OP_HRS AI34 547 03,04 x1 ADF 38 None None Sys 2 Operating Hours S
43 S3_OP_HRS AI35 548 03,04 x1 ADF 39 None None Sys 3 Operating Hours S
44 S4_OP_HRS AI36 549 03,04 x1 ADF 40 None None Sys 4 Operating Hours S
45 S1_COMP_ST AI37 550 03,04 x1 ADF 41 None None Sys 1 Compressor Starts S
46 S2_COMP_ST AI38 551 03,04 x1 ADF 42 None None Sys 2 Compressor Starts S
47 S3_COMP_ST AI39 552 03,04 x1 ADF 43 None None Sys 3 Compressor Starts S
48 S4_COMP_ST AI40 553 03,04 x1 ADF 44 None None Sys 4 Compressor Starts S
49 S1_HI_MTR_T AI41 554 03,04 x10 ADF 45 °F °C Sys 1 Highest Motor Temperature S
50 S2_HI_MTR_T AI42 555 03,04 x10 ADF 46 °F °C Sys 2 Highest Motor Temperature S
51 S3_HI_MTR_T AI43 556 03,04 x10 ADF 47 °F °C Sys 3 Highest Motor Temperature S
52 S4_HI_MTR_T AI44 557 03,04 x10 ADF 48 °F °C Sys 4 Highest Motor Temperature S
53 VSD_OUT_FR AI45 558 03,04 x10 ADF 49 Hz Hz VSD Output Frequency S
54 S1_FEED AI46 559 03,04 x10 ADF 50 % % Sys 1 Flash Tank Feed Valve % S
55 S2_FEED AI47 560 03,04 x10 ADF 51 % % Sys 2 Flash Tank Feed Valve % S
56 S3_FEED AI48 561 03,04 x10 ADF 52 % % Sys 3 Flash Tank Feed Valve % S
57 S4_FEED AI49 562 03,04 x10 ADF 53 % % Sys 4 Flash Tank Feed Valve % S
58 S1_OP_CODE AI50 563 03,04 x1 ADF 54 None None Sys 1 Operational Code S
59 S2_OP_CODE AI51 564 03,04 x1 ADF 55 None None Sys 2 Operational Code S
60 S3_OP_CODE AI52 565 03,04 x1 ADF 56 None None Sys 3 Operational Code S
61 S4_OP_CODE AI53 566 03,04 x1 ADF 57 None None Sys 4 Operational Code S
62 S1_FTL_CODE AI54 567 03,04 x1 ADF 58 None None Sys 1 Fault Code S
63 S2_FLT_CODE AI55 568 03,04 x1 ADF 59 None None Sys 2 Fault Code S
TABLE 33 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

64 S3_FTL_CODE AI56 569 03,04 x1 ADF 60 None None Sys 3 Fault Code S
65 S4_FLT_CODE AI57 570 03,04 x1 ADF 61 None None Sys 4 Fault Code S
66 S1_LEVEL AI58 571 03,04 x10 ADF 62 % % Sys 1 Flash Tank Level % S
67 S2_LEVEL AI59 572 03,04 x10 ADF 63 % % Sys 2 Flash Tank Level % S
68 S3_LEVEL AI60 573 03,04 x10 ADF 64 % % Sys 3 Flash Tank Level % S
69 S4_LEVEL AI61 574 03,04 x10 ADF 65 % % Sys 4 Flash Tank Level % S
70 S1_FAN_STG AI62 575 03,04 x1 ADF 66 None None Sys 1 Condenser Fan Stage S
71 S2_FAN_STG AI63 576 03,04 x1 ADF 67 None None Sys 2 Condenser Fan Stage S
72 S3_FAN_STG AI64 577 03,04 x1 ADF 68 None None Sys 3 Condenser Fan Stage S
73 S4_FAN_STG AI65 578 03,04 x1 ADF 69 None None Sys 4 Condenser Fan Stage S
74 LEAD AI66 579 03,04 x1 ADF 70 None None Lead System S
75 LCHLT_SETP AI67 580 03,04 x10 ADF 71 °F °C Leaving Chilled Liquid Setpoint S
76 LCHLT_CUTOUT AI68 581 03,04 x10 ADF 72 °F °C Leaving Chilled Liquid Cutout S
77 S1_DRAIN AI69 582 03,04 x10 ADF 73 % % Sys 1 Flash Tank Drain Valve % S
78 S2_DRAIN AI70 583 03,04 x10 ADF 74 % % Sys 2 Flash Tank Drain Valve % S
79 S3_DRAIN AI71 584 03,04 x10 ADF 75 % % Sys 3 Flash Tank Drain Valve % S
80 S4_DRAIN AI72 585 03,04 x10 ADF 76 % % Sys 4 Flash Tank Drain Valve % S
81 SUCT_PRS_CUT AI73 586 03,04 x10 ADF 77 PSI BAR Suction Pressure Cutout S
82 VSD_DCB_V_13 AI74 587 03,04 x1 ADF 78 Volts Volts VSD DC Bus Voltage Sys 1/3 S

Property of Johnson Controls, Inc.

YCAV and YCIV Native Subject to change without notice. 2 of 4

JOHNSON CONTROLS
ISSUE DATE: 09/30/2019
FORM 201.23-NM2
02/17/2017

Item BACnet Modbus

Modbus Modbus Data Type Engineering Units Point List Code: S = Standard O = Optional N = Not Available
Ref BACnet Name Object Scaling (See N2 Metasys
Address Supported
Num Instance Note 5) Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
83 VSD_DCB_V_24 AI75 588 03,04 x1 ADF 79 Volts Volts VSD DC Bus Voltage Sys 2/4 S
84 REM_SETPOINT AI76 589 03,04 x10 ADF 80 °F °C Remote Leaving Chilled Liquid Setpoint S
FORM 201.23-NM2

85 S1_SUC_SHEAT AI77 590 03,04 x10 ADF 81 °F (diff) °C (diff) Sys 1 Suction Superheat S
86 S2_SUC_SHEAT AI78 591 03,04 x10 ADF 82 °F (diff) °C (diff) Sys 2 Suction Superheat S

JOHNSON CONTROLS
87 S3_SUC_SHEAT AI79 592 03,04 x10 ADF 83 °F (diff) °C (diff) Sys 3 Suction Superheat S
ISSUE DATE: 09/30/2019

88 S4_SUC_SHEAT AI80 593 03,04 x10 ADF 84 °F (diff) °C (diff) Sys 4 Suction Superheat S
89 COOLING_RNG AI81 594 03,04 x10 ADF 85 °F °C Cooling Range S
90 S1_DSC_SHEAT AI82 595 03,04 x10 ADF 86 °F (diff) °C (diff) Sys 1 Discharge Superheat S
91 S2_DSC_SHEAT AI83 596 03,04 x10 ADF 87 °F (diff) °C (diff) Sys 2 Discharge Superheat S
92 S3_DSC_SHEAT AI84 597 03,04 x10 ADF 88 °F (diff) °C (diff) Sys 3 Discharge Superheat S
93 S4_DSC_SHEAT AI85 598 03,04 x10 ADF 89 °F (diff) °C (diff) Sys 4 Discharge Superheat S
Sys 1 System State [0=Stopped, 1=Running, 2=Faulted,
94 S1_SYS_STATE AI86 599 03,04 x1 ADF 90 None None S
4=Locked Out, 5=Pre-Run
Sys 2 System State [0=Stopped, 1=Running, 2=Faulted,
95 S2_SYS_STATE AI87 600 03,04 x1 ADF 91 None None S
4=Locked Out, 5=Pre-Run
Sys 3 System State [0=Stopped, 1=Running, 2=Faulted,
96 S3_SYS_STATE AI88 601 03,04 x1 ADF 92 None None S
4=Locked Out, 5=Pre-Run
Sys 4 System State [0=Stopped, 1=Running, 2=Faulted,
97 S4_SYS_STATE AI89 602 03,04 x1 ADF 93 None None S
4=Locked Out, 5=Pre-Run
98 S1_MTR_OVER AI90 603 03,04 x1 ADF 94 Amps Amps Sys 1 Motor Current Overload Setting S
99 S2_MTR_OVER AI91 604 03,04 x1 ADF 95 Amps Amps Sys 2 Motor Current Overload Setting S
100 S3_MTR_OVER AI92 605 03,04 x1 ADF 96 Amps Amps Sys 3 Motor Current Overload Setting S
101 S4_MTR_OVER AI93 606 03,04 x1 ADF 97 Amps Amps Sys 4 Motor Current Overload Setting S
BINARY READ ONLY POINTS
102 S13_ALARM BI1 1282 01,02,03 N/A BD5 0/1 0/1 Sys 1/3 Alarm [0=No Alarm, 1=Alarm] S
103 S24_ALARM BI2 1283 01,02,03 N/A BD6 0/1 0/1 Sys 2/4 Alarm [0=No Alarm, 1=Alarm] S
104 EVAP_HEATER BI3 1284 01,02,03 N/A BD7 0/1 0/1 Evaporator Heater Status S
105 EVAP_PUMP BI4 1285 01,02,03 N/A BD8 0/1 0/1 Evaporator Pump Status S
106 S1_COMP_RUN BI5 1286 01,02,03 N/A BD9 0/1 0/1 Sys 1 Compressor Run Status S
107 S2_COMP_RUN BI6 1287 01,02,03 N/A BD10 0/1 0/1 Sys 2 Compressor Run Status S
108 S3_COMP_RUN BI7 1288 01,02,03 N/A BD11 0/1 0/1 Sys 3 Compressor Run Status S
109 S4_COMP_RUN BI8 1289 01,02,03 N/A BD12 0/1 0/1 Sys 4 Compressor Run Status S
TABLE 33 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

110 S1_ECON_SV BI9 1290 01,02,03 N/A BD13 0/1 0/1 Sys 1 Economizer Solenoid Valve Status S
111 S2_ECON_SV BI10 1291 01,02,03 N/A BD14 0/1 0/1 Sys 2 Economizer Solenoid Valve Status S
112 S3_ECON_SV BI11 1292 01,02,03 N/A BD15 0/1 0/1 Sys 3 Economizer Solenoid Valve Status S
113 S4_ECON_SV BI12 1293 01,02,03 N/A BD16 0/1 0/1 Sys 4 Economizer Solenoid Valve Status S
114 WATER_GLYCOL BI13 1294 01,02,03 N/A BD17 0/1 0/1 Cooling Type [0=Water, 1=Glycol] S
115 LOCAL_REMOTE BI14 1295 01,02,03 N/A BD18 0/1 0/1 Local Remote Control Mode [0=Local, 1=Remote] S
116 DISP_UNITS BI15 1296 01,02,03 N/A BD19 0/1 0/1 Display Units [0=Imperial, 1=SI] S

NOTES
1 Units have Native BACnet MS/TP, Modbus RTU, and N2 communications. No external Gateway is required for these interfaces unless the customer is using Connected Services.
2 BACnet Object Types: 0 = Analog In, 1 = Analog Out, 2 = Analog Value, 3 = Binary In, 4 = Binary Out, 8 = Device, 15 = Alarm Notification (0-127 are reserved ASHRAE Objects)
3 WC = Inches of water Column, CFM = Cubic Feet per Minute, FPM = Feet Per Minute, PSI = Pounds per Square Inch, Pa = Pascals, kPa = kiloPascals, PPM = Parts Per Million, kJ/kg = kiloJoules per kilogram
4 Values that are not applicable due to unit configuration and options will be sent as zero (0).
5 Modbus values are all of type signed. Scaling values in x10 (Bold) indicate scaling in metric is x100. Scaling and signing may not be modified in the field.
6
7
8
9
10

Property of Johnson Controls, Inc.

YCAV and YCIV Native Subject to change without notice. 3 of 4

303
SECTION 8 - MICROPANEL

8
304
02/17/2017

Code Value Operational Code Code Value Fault/Inhibit Code

63 Manual Override 0 No Fault Code
64 Daily Schedule Shutdown 1 Low Ambient Temperature
65 Unit Switch OFF 2 High Ambient Temperature
66 Remote Controlled Shutdown 3 Low Chilled Liquid Temperature
67 Loss Of External Communications 4
68 Flow Switch Shutdown 5 Low RTC Battery Voltage
69 VSD Cooling Shutdown 6 Invalid Number of Compressors Selected
SECTION 8 - MICROPANEL

70 Serial Number Shutdown 7 VSD Communications Failure

71 Password Shutdown (AGR) 8 Pre-charge Low DC Bus Voltage (Unit)
72 9 Pre-charge DC Bus Voltage Imbalance (Unit)
73 10 High DC Bus Voltage (Unit)
74 No Run Permissive 11 Low DC Bus Voltage (Unit)
75 Anti-Recycle Timer Active 12 DC Bus Voltage Imbalance (Unit)
76 System Switch OFF 13 High VSD Ambient Temperature
77 System Not Running 14 Single Phase Input (Unit)
78 System Running 15 VSD Power Supply Fault
79 Discharge Pressure Limiting 16 VSD Logic Board Fault
80 Suction Pressure Limiting 17 Motor Current Overload (Hardware)
81 Motor Current Limiting 18 CT Plug Fault
82 19
83 ISN/BAS Motor Current Limiting 20
84 Remote Motor Current Limiting 21
85 System Shutting Down 22
86 VSD Pre-Charging 23
87 VSD Baseplate Temp Limiting 24
88 VSD Internal Ambient Temp Limiting 25
89 Sound Limiting 26
90 ISN Sound Limiting 27 High Discharge Pressure (Software)
91 Remote Sound Limiting 28 High Differential Oil Pressure
92 Pulldown Motor Current Limiting 29 Low Differential Oil Pressure
93 Cooling Demand Shutdown 30 Low Suction Pressure
94 System HPCO (Fan Special) 31 High Discharge Temperature
95 32 High Oil Temperature
TABLE 33 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

96 33 Low Suction Superheat

97 34 Sensor Failure
98 35 Low Motor Current
99 36 High Motor Temperature
100 37 Pre-charge Low DC Bus Voltage (System 1/3, 2/4)
101 38 Pre-charge DC Bus Voltage Imbalance (System 1/3, 2/4)
102 39 High DC Bus Voltage (System 1/3, 2/4)
103 40 Low DC Bus Voltage (System 1/3, 2/4)
104 41 DC Bus Voltage Imbalance (System 1/3, 2/4)
105 42 High Motor Current
106 43 Motor Current Overload (Software)
107 44 IGBT Gate Driver Fault
108 45 High Baseplate Temperature
109 46 Single Phase Input (System 1/3, 2/4)
110 47 VSD Run Signal Fault
111 48 High Discharge Pressure (Hardware - HPCO)
112 49 High Flash Tank Level
113 50 Control Voltage Fault
114 51 Low Discharge Superheat

Property of Johnson Controls, Inc.

YCAV and YCIV Native Subject to change without notice. 4 of 4

JOHNSON CONTROLS
ISSUE DATE: 09/30/2019
FORM 201.23-NM2
FORM 201.23-NM2
ISSUE DATE: 09/30/2019

SECTION 9 - MAINTENANCE

GENERAL REQUIREMENTS Refrigerant Leaks

The units have been designed to operate continuously, Visually check the heat exchangers, compressors and
provided they are regularly maintained and operated pipework for damage and gas leaks.
within the limitations given in this manual. Each unit
should be included in a routine schedule of daily main- Operating Conditions
tenance checks by the operator/customer, backed up by Read the operating pressures and temperatures at the
regular service inspection and maintenance visits by a control panel using the display keys and check that
suitably qualified Service Engineer. these are within the operating limitations given in the
manual.
It is entirely the responsibility of the owner to pro-
vide for these regular maintenance requirements and/ Compressor Oil Level
or enter into a maintenance agreement with a Johnson
Controls service organization to protect the operation Check the compressor oil level after the compressor
of the unit. If damage or a system failure occurs due has been operating on ‘FULL LOAD’ for approximate-
to improper maintenance during the warranty period, ly half an hour. The oil level should be between the
Johnson Controls shall not be liable for costs incurred upper and lower sight glasses on the oil separators.
to return the unit to satisfactory condition.
Refrigerant Charge
Section 9 - Maintenance on page 305
When a system starts up, or sometimes after a change
applies to the basic unit only and may,
of capacity, a flow of bubbles will be seen in the liquid
on individual contracts, be supplemented
line sight glass. After a few minutes of stable opera-
by additional requirements to cover any
tion, the bubbles should clear leaving just liquid refrig-
modifications or ancillary equipment as
erant showing in the sight glass.
applicable.

Section 1 - General Chiller Information Scheduled Maintenance

and Safety on page 11 of this manual The maintenance operations detailed in the following
should be read carefully before attempt- table should be carried out on a regular basis by a suit-
ing any maintenance operations on the ably qualified Service Engineer. It should be noted that
unit. the interval necessary between each ‘minor’ and ‘ma-
jor’ service can vary depending on, for instance, appli-
cation, site conditions and expected operating sched-
Daily Maintenance
ule. Normally a ‘minor’ service should be carried out
The following maintenance checks should be carried every three to six months and a ‘major’ service once a
out on a daily basis by the operator/customer. Note year. It is recommended that your local Johnson Con-
that the units are not generally user serviceable and trols Service Center is contacted for recommendations
no attempt should be made to rectify faults or prob- for individual sites. 9
lems found during daily checks unless competent and
equipped to do so. If in any doubt, contact your local Chiller / Compressor Operating Log
Johnson Controls Service Agent. A Chiller/Compressor Operating Log is supplied on
Page 329 for logging compressor and chiller operating
Unit Status
data.
Press the ‘STATUS’ key on the keypad and ensure no
fault messages are displayed. EVACUATING A SYSTEM
If a system or a portion of a system needs to be evacu-
ated, it should be evacuated to a minimum of 500 mi-
crons. The system should then be able to hold the vacu-
um for 10 minutes with a maximum rise of 50 microns.
If the system is not able to hold a vacuum, recheck the
system for leaks.

JOHNSON CONTROLS 305

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

R-134a CONVERSION TABLES

The following table can be used for converting R-134a

pressures to their equivalent saturated temperatures.
Table 34 - R-134a PRESSURE TO SATURATED TEMPERATURE CONVERSION
PRESSURE DEW POINT PRESSURE DEW POINT PRESSURE DEW POINT
PSIG (BAR) TEMP. ºF (ºC) PSIG (BAR) TEMP. ºF (ºC) PSIG (BAR) TEMP. ºF (ºC)
0.0 (0) -14.9 (-26.1) 135.0 (9.31) 105.0 (40.6) 270.0 (18.62) 152.0 (66.7)
5.0 (.34) -3.0 (-19.4) 140.0 (9.65) 107.2 (41.8) 275.0 (18.96) 153.4 (67.4)
10.0 (.69) 6.7 (-14.1) 145.0 (10.0) 109.4 (43) 280.0 (19.31) 154.7 (68.2)
15.0 (1.03) 14.9 (-9.5) 150.0 (10.34) 111.5 (44.2) 285.0 (19.65) 156.1 (68.9)
20.0 (1.38) 22.2 (-5.4) 155.0 (10.69) 113.6 (45.3) 290.0 (19.99) 157.4 (69.7)
25.0 (1.72) 28.7 (-1.8) 160.0 (11.03) 115.6 (46.4) 295.0 (20.34) 158.7 (70.4)
30.0 (2.07) 34.6 (1.4) 165.0 (11.38) 117.6 (47.6) 300.0 (20.68) 160.0 (71.1)
35.0 (2.41) 40.0 (4.4 ) 170.0 (11.72) 119.6 (48.7) 305.0 (21.03) 161.3 (71.8)
40.0 (2.76) 45.0 (7.2) 175.0 (12.07) 121.5 (49.7) 310.0 (21.37) 162.5 (72.5)
45.0 (3.10) 49.6 (9.8) 180.0 (12.41) 123.3 (50.7) 315.0 (21.72) 163.8 (73.2)
50.0 (3.45) 54.0 ( 12.2) 185.0 (12.76) 125.2 (51.8) 320.0 (22.06) 165.0 (73.9)
55.0 (3.79) 58.1 (14.5) 190.0 (13.10) 126.9 (52.7) 325.0 (22.41) 166.2 (74.6)
60.0 (4.14) 62.0 (16.7) 195.0 (13.44) 128.7 (53.7) 330.0 (22.75) 167.4 (75.2)
65.0 (4.48) 65.7 (18.7) 200.0 (13.79) 130.4 (54.7) 335.0 (23.10) 168.6 (75.9)
70.0 (4.83) 69.2 (20.7) 205.0 (14.13) 132.1 (55.6) 340.0 (23.44) 169.8 (76.6)
75.0 (5.17) 72.6 (22.6) 210.0 (14.48) 133.8 (56.6) 345.0 (23.79) 171.0 (77.2)
80.0 (5.52) 75.9 (24.4) 215.0 (14.82) 135.5 (57.5) 350.0 (24.13) 172.1 (77.8)
85.0 (5.86) 79.0 (26.1) 220.0 (15.17) 137.1 (58.4) 355.0 (24.48) 173.3 (78.5)
90.0 (6.21) 82.0 (27.8) 225.0 (15.51) 138.7 (59.3) 360.0 (24.82) 174.4 (79.1)
95.0 (6.55) 84.9 (29.4) 230.0 (15.86) 140.2 (60.1) 365.0 (25.17) 175.5 (79.7)
100.0 (6.89) 87.7 (30.9) 235.0 (16.20) 141.8 (61) 370.0 (25.51) 176.6 (80.3)
105.0 (7.24) 90.4 (32.4) 240.0 (16.55) 143.3 (61.8) 375.0 (25.86) 177.7 (80.9)
110.0 (7.58) 93.0 (33.9) 245.0 (16.89) 144.8 (62.3) 380.0 (26.20) 178.8 (81.6)
115.0 (7.93) 95.5 (35.3) 250.0 (17.24) 146.3 (63.5) 385.0 (26.54) 179.9 (82.2)
120.0 (8.27) 98.0 (36.7) 255.0 (17.58) 147.7 (64.3) 390.0 (26.89) 180.9 (82.7)
125.0 (8.62) 100.4 (38) 260.0 (17.93) 149.2 (65.1) 395.0 (27.23) 182.0 (83.3)
130.0 (8.96) 102.7 (39.3) 265.0 (18.27) 150.6 (65.9) 400.0 (27.58) 183.0 (83.9)

306 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

MAINTENANCE REQUIREMENTS
FOR YCIV CHILLERS

SEMI- EVERY 5 EVERY *

PROCEDURE WEEKLY QUARTERLY ANNUALLY
ANNUALLY YEARS HOURS
Check Oil Level in Oil Separator Sight
X
Glass.

Check Liquid Line Sight Glass/ Moisture

X
Indicator.

Record System Operating Temperatures

X
& Pressures.
Check Condenser Coils for dirt / debris
X
and clean as necessary.
Check Programmable Operating
Setpoints and Safety Cutouts. Assure X
they are correct for the application.

Check Compressor and Evaporator

X
Heater operation.

Check for dirt in the Panel. Check Door

X
Gasket sealing integrity.

**Check Superheat on the Evaporator

and the Economizer feed to the Compres- X
sor.

**Check Condenser Subcooling. X

**Leak check the Chiller. X

**Sample Compressor Oil, check for Acid,

X
and replace if necessary. 9
**Disconnect Power Source and Lock
Out. Check tightness of Power Wiring X
connections.
Check Glycol concentration on Low Temp.
or other applications where freezing may X
be a problem.
VSD Glycol Change. X

* Reserved for customer use for any special site requirements.

**This procedure must be performed at the specific time by an industry certified technician who has been
trained and qualified to work on this type of equipment. A record of this procedure be successfully carried out should be maintained on file by
the equipment owner should proof of adequate maintenance be required at a later date for warranty purposes.

JOHNSON CONTROLS 307

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

TROUBLESHOOTING GUIDE
(Always remove power to the chiller and assure the DC
Bus voltage has bled off)
PROBLEM POSSIBLE CAUSE ACTION

High Voltage to the Chiller is missing.

Supply to the Panel is missing. Check 1FU, 2FU, 4FU, 5FU, 17FU, or 19FU.
No Display On Check 2T or 10T Transformer.
Control Panel.
Unit Will Not Run. Line Fuse is blown. Check Fuses.

Chiller Control Board is defective. Replace Chiller Control Board

Display Board defective. Replace Display Board

SCR Diode Module is defective. Check SCR/Diode Module.

IBGT Module is defective. Check IBGT Module.

Line Fuse Blows.
VSD Logic Board is defective. Replace VSD Logic Board.

SCR Trigger Board is defective Replace SCR Trigger Board.

Ambient temperature is lower than the programmed Check the programmed cutout and determine
Chiller Fault: operating limit. if it is programmed correctly
Low Ambient
Temperature Check the panel against the thermometer
Ambient Sensor is defective.
reading of ambient temperature
Ambient Temperature is above the maximum operating
Chiller Fault: Check outside air temperature.
limit.
High Ambient
Check the Panel Display against Thermometer
Temperature Ambient Sensor is defective.
reading of Ambient Temperature at the sensor.
Check for restricted flow.
Leaving chilled liquid temperature drops faster than the Check for rapid flow changes.
unit can unload. Water loop is too small.
Chiller Fault:
Flow is below minimum for chiller.
Low Leaving
Chilled Liquid Check Sensor against Temp.
Chilled Water Sensor Gauge in water line.
is defective. Check Sensor for intermittent operation.
Check Wiring for shorts or opens.
System Fault:
System Fuse is blown. Check respective system Fuse 20FU or 21FU.
Control Voltage
Oil Temperature Check Sensor with infrared to determine if
System Fault: Sensor is defective. reading is reasonable.
High Oil
Condenser Fans NOT operating or running backwards. Check Fans.
Temperature
Coils dirty. Check and clean Coils.

Coils dirty. Check and clean coils.

Coils are damaged. Comb out fins.

System Fault:
High Check fan fuses.
Discharge Fans NOT operating. Check fan rotation.
Pressure
Check fan motor/blade.

System is overcharged. Remove charge and check subcooling.

308 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

PROBLEM POSSIBLE CAUSE ACTION

Discharge Temperature Sensor is defective. Check Sensor.

System Fault: Condenser Fans NOT operating or are running back-
Check Fans.
High wards.
Discharge Coils dirty. Check and clean Coils.
Temperature
Measure Superheat with gauges and thermo-
High Superheat.
couple. Determine cause.
Refrigerant charge low. Check subcooling.
Excess charge in system, High discharge
pressure.
Check subcooling.
System Fault:
High Motor High Motor temperature input from one of the sensors High Superheat. Drain/Feed Valves
Temperature NOT controlling. Isolate cause.
Motor Sensor reading incorrectly.
Program panel to ignore a single sensor.
Economizer Solenoid energized at low
speeds. Valve is leaking through.
Low charge. Check subcooling.
Transducer reads incorrectly. Check transducer against a gauge.
System Fault: Suction Temp. Sensor reads incorrectly. Check sensor against a thermocouple.
Low
Low flow. Check flow.
Suction
Pressure Check Feed and Drain Valve operation.
Feed or Drain Valve NOT operating
Check superheat.
Check Feed and Drain Valve operation.
Feed or Drain Valve defective.
Check superheat.
Discharge Transducer is defective. Check transducer against a gauge.
System Fault:
Ambient Temp. very high. Normal operation.
Discharge
Pressure Fans NOT operating. Check fan operation.
Limiting Remote or local discharge pressure load limiting is
Normal operation.
programmed.
Ambient temperature is high,
normal response from controller
System Fault:
High motor current
Remote or panel limiting is in 9
Motor effect, Normal response.
has activated
Current Excess charge in system, adjust charge.
current limiting
Limiting
Condenser coils dirty, Clean condenser.
Fans NOT operating, Check fans.
Coolant level low. Add coolant.
Vsd Fault:
High Glycol Pump is defective. Replace Glycol Pump.
Baseplate VSD Board is defective Replace VSD Logic Board.
Temperature
IBGT Module is defective. Check defective IGBT Module.
Vsd Fault: SCR / Diode Module is defective. Check SCR / Diode Module.
Low Dc
Bus Voltage SCR Trigger Board is defective. Check SCR Trigger Board.

JOHNSON CONTROLS 309

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

LIMITED WARRANTY No warranty repairs or replacements will be made until

payment for all equipment, materials, or components
Warranty on New Equipment has been received by Johnson Controls.
Johnson Controls warrants all equipment and associat-
ed factory supplied materials, or start-up services per- All Warranties and Guarantees Are Void If:
formed by Johnson Controls in connection therewith, 1. Equipment is used with refrigerants, oil, or anti-
against defects in workmanship and material for a pe- freeze agents other than those authorized by John-
riod of eighteen (18) months from date of shipment. son Controls.
Subject to the exclusions listed below, Johnson Con-
2. Equipment is used with any material or any equip-
trols, at its option, will repair or replace, FOB point of
ment such as evaporators, tubing, other low side
shipment, such YORK products or components as it
equipment, or refrigerant controls not approved
finds defective.
by Johnson Controls.
Exclusions - Unless specifically agreed to in the con- 3. Equipment has been damaged by freezing because
tract documents, this warranty does not include the fol- it is not properly protected during cold weather, or
lowing costs and expenses: damaged by fire or any other conditions not ordi-
narily encountered.
1. Labor to remove or reinstall any equipment, mate-
rials, or components. 4. Equipment is not installed, operated, maintained
and serviced in accordance with instructions is-
2. Shipping, handling, or transportation charges.
sued by Johnson Controls.
3. Cost of refrigerants.
5. Equipment is damaged due to dirt, air, moisture,
No warranty repairs or replacements will be made until or other foreign matter entering the refrigerant
payment for all equipment, materials, or components system.
has been received by Johnson Controls. 6. Equipment is not properly stored, protected or in-
spected by the customer during the period from
Warranty on Reconditioned or Replacement
date of shipment to date of initial start.
Materials
7. Equipment is damaged due to acts of GOD, abuse,
Except for reciprocating compressors, which Johnson
neglect, sabotage, or acts of terrorism.
Controls warrants for a period of one year from date of
shipment, Johnson Controls warrants reconditioned or THIS WARRANTY IS IN LIEU OF ALL OTHER WAR-
replacement materials, or start-up services performed RANTIES AND LIABILITIES, EXPRESS OR IM-
by Johnson Controls in connection therewith, against PLIED IN LAW OR IN FACT, INCLUDING THE WAR-
defects in workmanship or material for a period of RANTIES OF MERCHANTABILITY AND FITNESS
ninety (90) days from date of shipment. Subject to the FOR A PARTICULAR PURPOSE. THE WARRANTIES
exclusions listed below, Johnson Controls, at its op- CONTAINED HEREIN SET FORTH BUYER’S SOLE
tion, will repair or replace, FOB point of shipment, AND EXCLUSIVE REMEDY IN THE EVENT OF A
such materials or parts as Johnson Controls finds de- DEFECT IN WORKMANSHIP OR MATERIALS. IN
NO EVENT SHALL JOHNSON CONTROLS LIABIL-
fective. However, where reconditioned or replacement
ITY FOR DIRECT OR COMPENSATORY DAMAGES
materials or parts are placed on equipment still under
EXCEED THE PAYMENTS RECEIVED BY JOHNSON
the original new equipment warranty, then such recon-
CONTROLS FROM BUYER FOR THE MATERIALS
ditioned or replacement parts are warranted only until OR EQUIPMENT INVOLVED. NOR SHALL JOHN-
the expiration of such original new equipment war- SON CONTROLS BE LIABLE FOR ANY SPECIAL,
ranty. INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
Exclusions - Unless specifically agreed to in the con- THESE LIMITATIONS ON LIABILITY AND DAM-
AGES SHALL APPLY UNDER ALL THEORIES OF
tract documents, this warranty does not include the fol-
LIABILITY OR CAUSES OF ACTION, INCLUDING,
lowing costs and expenses:
BUT NOT LIMITED TO, CONTRACT, WARRANTY,
1. Labor to remove or reinstall any equipment, mate- TORT (INCLUDING NEGLIGENCE) OR STRICT LI-
rials, or components. ABILITY. THE ABOVE LIMITATIONS SHALL IN-
URE TO THE BENEFIT OF JOHNSON CONTROLS
2. Shipping, handling, or transportation charges. SUPPLIERS AND SUBCONTRACTORS.
3. Cost of refrigerant.

310 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

CHILLED LIQUID AND SUCTION TEMPERATURE SENSOR INPUT VOLTAGE

Table 35 - TEMPERATURE INPUT VOLTAGE SENSOR (MEASURED SIGNAL TO SHIELD AT THE SENSOR)
TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE

16.1 1.52 35.9 2.19 55.6 2.85

16.7 1.54 36.5 2.21 56.3 2.87

17.3 1.56 37.0 2.23 56.9 2.89

17.9 1.58 37.6 2.25 57.5 2.91

18.5 1.60 38.2 2.27 58.1 2.93

19.1 1.62 38.7 2.29 58.7 2.95

19.7 1.64 39.3 2.30 59.4 2.97

20.3 1.66 39.9 2.32 60.0 2.99

20.9 1.68 40.4 2.34 60.6 3.01

21.5 1.70 41.0 2.36 61.3 3.03

22.1 1.72 41.6 2.38 61.9 3.05

22.7 1.74 42.1 2.40 62.5 3.07

23.3 1.76 42.7 2.42 63.2 3.09

23.9 1.78 43.3 2.44 63.8 3.11

24.5 1.80 43.9 2.46 64.5 3.13

25.0 1.82 44.4 2.48 65.1 3.14

25.6 1.84 45.0 2.50 65.8 3.16

26.2 1.86 45.6 2.52 66.5 3.18

26.8 1.88 46.2 2.54 67.1 3.20

27.3 1.90 46.7 2.56 67.8 3.22

27.9 1.91 47.3 2.58 68.5 3.24

28.5 1.93 47.9 2.60 69.2 3.26

29.0 1.95 48.5 2.62 69.9 3.28

29.6 1.97 49.1 2.64 70.6 3.30

30.2 1.99 49.7 2.66 71.3 3.32

9
30.8 2.01 50.3 2.68 72.0 3.34

31.3 2.03 50.8 2.70 72.7 3.36

31.9 2.05 51.4 2.71 73.4 3.38

32.5 2.07 52.0 2.73 74.2 3.40

33.0 2.09 52.6 2.75 74.9 3.42

33.6 2.11 53.2 2.77

34.2 2.13 53.8 2.79

34.8 2.15 54.5 2.81

35.3 2.17 55.0 2.83

JOHNSON CONTROLS 311

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

Table 36 - OUTSIDE AIR TEMPERATURE SENSOR INPUT VOLTAGE (MEASURED SIGNAL TO SHIELD AT
THE SENSOR)
TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE
0.24 0.68 49.8 2.00 93.3 3.31
1.79 0.71 50.7 2.03 94.4 3.34
3.30 0.74 51.6 2.06 65.6 3.37
4.76 0.77 52.5 2.09 96.8 3.40
6.19 0.80 53.4 2.11 98.0 3.43
7.58 0.83 54.3 2.14 99.2 3.46
8.94 0.85 55.3 2.17 100.4 3.49
10.3 0.88 56.2 2.20 101.6 3.52
11.6 0.91 57.1 2.23 102.9 3.55
12.8 0.94 58.0 2.26 104.2 3.57
14.1 0.97 58.9 2.29 105.5 3.60
15.3 1.00 59.8 2.32 106.8 3.63
16.5 1.03 60.7 2.35 108.1 3.66
17.7 1.06 61.6 2.38 109.5 3.69
18.9 1.09 62.6 2.41 110.9 3.72
20.0 1.12 63.5 2.44 112.3 3.75
21.2 1.15 64.4 2.47 113.8 3.78
22.3 1.18 65.3 2.50 115.2 3.81
23.4 1.21 66.3 2.52 116.7 3.84
24.4 1.24 67.2 2.55 118.3 3.87
25.5 1.26 68.1 2.58 119.9 3.90
26.6 1.26 69.1 2.61 121.5 3.93
27.6 1.32 70.0 2.64 123.2 3.96
28.7 1.35 70.9 2.67 124.9 3.98
29.7 1.38 71.9 2.70 126.6 4.01
30.7 1.41 72.8 2.73 128.4 4.04
31.7 1.44 73.8 2.76 130.3 4.07
32.7 1.47 74.8 2.76
33.7 1.50 75.8 2.82
34.7 1.53 76.7 2.85
35.7 1.56 77.7 2.88
36.7 1.59 78.7 2.91
37.6 1.62 79.7 2.93
38.6 1.65 80.7 2.96
39.6 1.67 81.7 2.99
40.5 1.70 82.7 3.02
41.4 1.73 83.6 3.05
42.4 1.76 84.6 3.08
43.3 1.79 85.7 3.11
44.3 1.82 86.7 3.13
45.2 1.85 87.8 3.16
46.1 1.88 88.9 3.19
47.0 1.91 90.1 3.22
48.0 1.94 91.1 3.25
48.9 1.97 92.2 3.28

312 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

Table 37 - PRESSURE TRANSDUCER OUTPUT VOLTAGE (MEASURED SIGNAL TO RETURN AT THE

TRANSDUCER)
SUCTION PRESSURE DISCHARGE PRESSURE DISCHARGE PRESSURE
TRANSDUCER TRANSDUCER TRANSDUCER
(125 PSIG) (275 PSIG) (275 PSIG)
PRESSURE VOLTAGE PRESSURE VOLTAGE PRESSURE VOLTAGE
0 0.50 0 0.50 140 2.54
5 0.66 5 0.57 145 2.61
10 0.82 10 0.65 150 2.68
15 0.98 15 0.72 155 2.75
20 1.14 20 0.79 160 2.83
25 1.30 25 0.86 165 2.90
30 1.46 30 0.94 170 2.97
35 1.62 35 1.01 175 3.05
40 1.78 40 1.08 180 3.12
45 1.94 45 1.15 185 3.19
50 2.10 50 1.23 190 3.26
55 2.26 55 1.30 195 3.34
60 2.42 60 1.37 200 3.41
65 2.58 65 1.45 205 3.48
70 2.74 70 1.52 210 3.55
75 2.90 75 1.59 215 3.63
80 3.06 80 1.66 220 3.70
85 3.22 85 1.74 225 3.77
90 3.38 90 1.81 230 3.85
95 3.54 95 1.88 235 3.92
100 3.70 100 1.95 240 3.99
105 3.86 105 2.03 245 4.06
110 4.02 110 2.10 250 4.14
115 4.18 115 2.17 255 4.21
120 4.34 120 2.25 260 4.28
125 4.50 125 2.32 265 4.35
130 2.39 270 4.43
135 2.46 275 4.50

JOHNSON CONTROLS 313

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

Table 38 - MOTOR TEMPERATURE SENSOR RESISTANCE (CHECK AT THE MOTOR)

TEMP. RNOMINAL RTOL RMIN RMAX
(ºC) (OHM) (± %) (OHM) (OHM)
-20 97,062 5.00 92,209 101,915
-15 77,941 4.60 69,586 76,296
-10 55,391 4.20 52,996 57,643
-5 42,324 3.85 40,695 43,954
0 32,654 3.50 31,511 33,797
5 25,396 3.15 24,596 26,196
10 19,903 2.80 19,346 20,461
15 15,713 2.50 15,321 16,106
20 12,493 2.20 12,218 12,768
25 10,000 2.00 9,800 10,200
30 8,056 2.40 7,863 8,250
35 6,531 2.70 6,354 6,707
40 5,326 3.00 5,166 5,485
45 4,368 3.25 4,226 4,510
50 3,602 3.50 3,476 3,728
55 2,986 3.75 2,874 3,098
60 2,488 4.00 2,389 2,588
65 2,083 4.25 1,995 2,172
70 1,753 4.50 1,674 1,832
75 1,481 4.75 1,411 1,551
80 1,257 5.00 1,194 1,321
85 1,071 5.20 1,016 1,127
90 916.9 5.40 867.4 966.4
95 787.7 5.60 743.6 831.9
100 679.3 5.80 639.9 718.7
105 587.9 6.00 552.6 623.2
110 510.6 6.20 479.9 542.3
115 445.0 6.40 416.5 473.5
120 389.0 6.60 363.4 414.7
125 341.2 6.70 318.4 364.1
130 300.2 6.90 279.5 320.9
135 264.9 7.10 246.1 283.7
140 234.4 7.30 217.3 251.5
145 208.0 7.40 192.6 223.3
150 185.0 7.50 171.1 198.9

314 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

Table 39 - COMPRESSOR MOTOR OVERLOAD SETTINGS AND MAX. VSD FREQUENCY

2 COMP CHILLER MODELS WITH STANDARD (PIN 52 = X) AND ULTRA QUIET FANS (PIN 52 = L)
CHILLER MODEL CHILLER NAME- COMPRESSOR 1 COMPRESSOR 2
MAXIMUM VSD FRE-
(2 COMP) PLATE VOLTAGE OVERLOAD SETTING OVERLOAD SETTING
QUENCY (HZ)
W/ STD & UQ FANS (VAC) (A) (A)
YCIV0157EA/VA 380 269 269 186
YCIV0157EA/VA 460 192 192 186
YCIV0157SA/PA/HA 380 273 273 200
YCIV0157SA/PA/HA 460 196 196 200
YCIV0177EA/VA 380 262 275 200
YCIV0177EA/VA 460 184 197 200
YCIV0177SA/PA/HA 380 289 267 182
YCIV0177SA/PA/HA 460 270 191 182
YCIV0187EA/VA 380 289 259 192
YCIV0187EA/VA 460 250 183 192
YCIV0187SA/PA/HA 380 289 275 200
YCIV0187SA/PA/HA 460 254 198 200
YCIV0197EA/VA 380 289 289 182
YCIV0197EA/VA 460 244 244 182
YCIV0207EA/VA 380 289 289 192
YCIV0207EA/VA 460 234 250 192
YCIV0207SA/PA/HA 380 289 289 186
YCIV0207SA/PA/HA 460 247 273 186
YCIV0227EA/VA 380 289 289 200
YCIV0227EA/VA 460 238 238 200
YCIV0227SA/PA/HA 380 289 289 200
YCIV0227SA/PA/HA 460 255 255 200
YCIV0247EA/VA 380 345 314 200
YCIV0247EA/VA 460 289 238 200
YCIV0247SA/PA/HA 380 345 331 200
YCIV0247SA/PA/HA 460 289 254 200
YCIV0267SA/PA/HA 380 345 345 200
YCIV0267SA/PA/HA 460 289 289 200

NOTE: Overload settings are based on Chiller Model and Condenser Fan Option

JOHNSON CONTROLS 315

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

TABLE 39 - COMPRESSOR MOTOR OVERLOAD SETTINGS AND MAX. VSD FREQUENCY (CONT'D)
2 COMP CHILLER MODELS WITH HIGH HEAD/HIGH STATIC FANS (PIN 52 = H)
CHILLER MODEL
CHILLER NAME- COMPRESSOR 1 COMPRESSOR 2
(2 COMP) MAXIMUM VSD FRE-
PLATE VOLTAGE OVERLOAD SETTING OVERLOAD SETTING
W/ HH/HS QUENCY (HZ)
(VAC) (A) (A)
FANS
YCIV0157EA/VA 380 269 269 186
YCIV0157EA/VA 460 192 192 186
YCIV0157SA/PA/HA 380 273 273 200
YCIV0157SA/PA/HA 460 196 196 200
YCIV0177EA/VA 380 262 275 200
YCIV0177EA/VA 460 184 197 200
YCIV0177SA/PA/HA 380 289 267 182
YCIV0177SA/PA/HA 460 270 191 182
YCIV0187EA/VA 380 289 259 192
YCIV0187EA/VA 460 250 183 192
YCIV0187SA/PA/HA 380 289 275 200
YCIV0187SA/PA/HA 460 254 198 200
YCIV0197EA/VA 380 289 289 182
YCIV0197EA/VA 460 244 244 182
YCIV0207EA/VA 380 289 289 192
YCIV0207EA/VA 460 234 250 192
YCIV0207SA/PA/HA 380 289 289 186
YCIV0207SA/PA/HA 460 247 273 186
YCIV0227EA/VA 380 289 289 200
YCIV0227EA/VA 460 238 238 200
YCIV0227SA/PA/HA 380 289 289 200
YCIV0227SA/PA/HA 460 255 255 200
YCIV0247EA/VA 380 345 314 200
YCIV0247EA/VA 460 289 238 200
YCIV0247SA/PA/HA 380 345 331 200
YCIV0247SA/PA/HA 460 289 254 200
YCIV0267SA/PA/HA 380 345 345 200
YCIV0267SA/PA/HA 460 289 289 200

NOTE: Overload settings are based on Chiller Model and Condenser Fan Option

316 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

TABLE 39 - COMPRESSOR MOTOR OVERLOAD SETTINGS AND MAX. VSD FREQUENCY (CONT'D)
3 COMP CHILLER MODELS WITH STANDARD (PIN 52 = X) AND ULTRA QUIET FANS (PIN 52 = L)
COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR
CHILLER MODEL CHILLER NAME-
OVERLOAD SET- OVERLOAD SET- 3 OVERLOAD MAXIMUM VSD
(3 COMP) PLATE VOLTAGE
TING TING SETTING FREQUENCY (HZ)
W/ STD & UQ FANS (VAC)
(A) (A) (A)
YCIV0267EA/VA 380 289 289 267 182
YCIV0267EA/VA 460 244 244 191 182
YCIV0287EA/VA 380 289 289 289 178
YCIV0287EA/VA 460 242 242 242 178
YCIV0287SA/PA/HA 380 289 289 268 186
YCIV0287SA/PA/HA 460 246 273 192 186
YCIV0307SA/PA/HA 380 289 289 289 188
YCIV0307SA/PA/HA 460 248 248 274 188
YCIV0327EA/VA 380 289 289 289 192
YCIV0327EA/VA 460 250 250 234 192
YCIV0357EA/VA 380 338 338 309 192
YCIV0357EA/VA 460 289 289 232 192
YCIV0357SA/PA/HA 380 331 331 338 200
YCIV0357SA/PA/HA 460 254 254 289 200
YCIV0397SA/PA/HA 380 338 338 338 200
YCIV0397SA/PA/HA 460 289 289 289 200

3 COMP CHILLER MODELS WITH HIGH HEAD/HIGH STATIC FANS (PIN 52 = H)

COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR 3
CHILLER MODEL CHILLER NAME- MAXIMUM VSD
OVERLOAD SET- OVERLOAD SET- OVERLOAD SET-
(3 COMP) PLATE VOLTAGE FREQUENCY
TING TING TING
W/ HH/HS FANS (VAC) (HZ)
(A) (A) (A)
YCIV0267EA/VA 380 289 289 267 182
YCIV0267EA/VA 460 244 244 191 182
YCIV0287EA/VA 380 289 289 289 178
YCIV0287EA/VA 460 242 242 242 178
YCIV0287SA/PA/HA 380 289 289 268 186
YCIV0287SA/PA/HA 460 246 273 192 186
YCIV0307SA/PA/HA 380 289 289 289 188
YCIV0307SA/PA/HA 460 248 248 274 188 9
YCIV0327EA/VA 380 289 289 289 192
YCIV0327EA/VA 460 250 250 234 192
YCIV0357EA/VA 380 338 338 309 192
YCIV0357EA/VA 460 289 289 232 192
YCIV0357SA/PA/HA 380 331 331 338 200
YCIV0357SA/PA/HA 460 254 254 289 200
YCIV0397SA/PA/HA 380 338 338 338 200
YCIV0397SA/PA/HA 460 289 289 289 200

NOTE: Overload settings are based on Chiller Model and Condenser Fan Option

JOHNSON CONTROLS 317

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

PRINTER WIRING Printer designs change rapidly. The user

should use the printer manual for the
A “serial” printer may be connected to the TB1 connec-
respective printer for set-up and wiring.
tor on the Chiller Logic Board for the purposes of log-
ging data and troubleshooting. Weightronix Imp-2600,
Seiko DPU-414, and Okidata Microline 184 printers or
equivalents may be used.
Data from the chiller is transmitted at 1200 baud.
Wiring diagrams for cables are shown below:

OKIDATA MICROLINE 184

25 pin RS-232 (DB-25P) TB1 Chiller Control Board
RS-232

CTS DSR TB1-2

RD TXD TB1-3
3

GND GND TB1-5

SEIKO DPU-414
9 pin RS-232 (DB-9) TB1 Chiller Control Board

CTS DSR TB1-2

RD TXD TB1-3
3

GND GND TB1-5

WEIGHTRONIX IMP-24, MODEL 2600

25 pin RS-232 (DB-25P) TB1 Chiller Control Board

CTS DSR TB1-2

RD TXD TB1-3
2

GND GND TB1-5

ld10638

Figure 62 - PRINT CABLE - CHILLER TO SERIAL PRINTER

318 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

Printer Cables With High Speed Serial Board

Printer cables should be shielded coaxial, #18AWG, SW1 – OFF: (-) Low when busy
stranded wire cables, not to exceed 50 ft in length. On 2 – OFF: 1200 baud
long cable runs or whenever permanent installation is
required, the shield of the coax should be tied to the 3 – OFF: 1200 baud
chassis ground at the chiller only, not at the printer. 4 – ON: 1200 baud

Printer Setup 5 – not used

The following information may be useful for quick 6 – OFF: no parity
set up of a printer. Specific printer manuals should 7 – OFF: Pin 20 and pin 11 act as busy line
be utilized, if problems occur, since functions often
change as new versions of printers are introduced with Weigh-tronix IMP 24 Model 2600
enhancements requiring control code, signal program- SW1 – OFF: 1200 baud
ming, and wiring changes.
2 – ON: 1200 baud
Okidata 184
Seiko
Control Board Switch Settings
DipSW1-1 – OFF: Input -Serial
SW1 – ON: Unslashed 0 1-2 – ON: Printing speed high
2 – OFF: Unslashed 0 1-3 – ON: Auto loading - ON
3 – OFF: Unslashed 0 1-4 – OFF: Auto LF - OFFF
4 – OFF: Form Length 11 in. 1-5 – ON: Setting Command - Enable
5 – ON: Form Length 11 in. 1-6 – OFF: Printing density - 100%
6 – OFF: Auto Line feed OFF 1-7 – ON: Printing density - 100%
7 – ON: 8 bit data 1-8 – ON: Printing density - 100%
8 – OFF: Enable front panel DipSW2-1 – ON: Printing Columns - 40

With Super Speed Serial Board 2-2 – ON: User Font Back-up - ON
2-3 – ON: Character Select - normal
SW1-1 – ON: Odd or even parity
2-4 – OFF: Zero - slash
1-2 – ON: No parity
2-5 – ON: I nternational character set-
1-3 – ON: 8 bit data
American
1-4 – ON: Protocol ready/busy
2-6 – ON: I nternational character set -
1-5 – ON: Test select American
1-6 – ON: Print mode 2-7 – ON: I nternational character set - 9
1-7 – OFF: SDD(-) pin 11 American
1-8 – ON: SDD(-) pin 11 2-8 – OFF: International character set –
American
2-1 – ON: 1200 baud
DipSW3-1 – ON: Data length - bits
2-2 – ON: 1200 baud
3-2 – ON: Parity Setting - no
2-3 – OFF: 1200 baud
3-3 – ON: Parity condition - odd
2-4 – OFF: DSR active
3-4 – ON: Busy control – H/W busy
2-5 – ON: Buffer threshold 32 bytes
3-5 – ON: Baud rate select - 1200
2-6 – ON: Busy signal 200ms
3-6 – OFF: Baud rate select - 1200
2-7 – ON: DTR space after power on
3-7 – ON: Baud rate select - 1200
2-8 – not used 3-8 – OFF: Baud rate select - 1200

JOHNSON CONTROLS 319

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

OPERATING LOG SHEET

SITE AND CHILLER INFORMATION
JOB NAME: START DATE:

LOCATION: COMPRESSOR # 1 - MODEL #:

COMPRESSOR # 2 - MODEL #:

SALES ORDER #:

COMPRESSOR # 3 - MODEL #:

TECHNICIAN NAME:

COMPRESSOR # 4 - MODEL #:

CHILLER MODEL #:

SERIAL #:

PROGRAMMED VALUES
CHILLED LIQUID SETPOINT PROGRAMMED CUTOUTS
Setpoint = ºF(ºC) Suction Pressure Cutout = PSIG (kPa)

Range = +/- ºF(ºC) Low Ambient Cutout = ºF(ºC)

Display Language = Leaving Chilled Liquid Temp. Cutout =

Chilled Liquid Mode =

ºF(ºC)

Local/Remote Mode = High Motor Current Unload = %FLA

Display Units =

Lead/Lag Control =

Remote Temperature Reset =

Remote Current Reset =

320 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

UNIT OPERATING TEMPERATURES AND PRESSURES

CHILLED LIQUID TEMPERATURES VSD BUS VOLTAGE

Entering Temp. = ºF(ºC) Bus 1 =

Leaving Temp. = ºF(ºC) Bus 2 =

OUTDOOR AMBIENT TEMPERATURES VSD INTERNAL AMBIENT TEMPERATURE

OAT = ºF(ºC) Ambient Temp. = ºF(ºC)

VSD FREQUENCY VSD COOLING SYSTEM STATUS

Actual = ON OFF

Command = VSD IGBT BASEPLATE TEMPS

T1 = ºF(ºC)

T2 = ºF(ºC)

SYSTEM OPERATING TEMPERATURES, PRESSURES AND CURRENTS

SYSTEM PRESSURES MOTOR TEMPERATURES

SYS 1 SYS 2 SYS 3 SYS 4 SYS 1 SYS 2 SYS 3 SYS 4

Oil PSIG (kPa) T1 ºF(ºC)

Suction PSIG (kPa) T2 ºF(ºC)

Discharge PSIG (kPa) T3 ºF(ºC)

SYSTEM TEMPERATURES COMPRESSOR SPEED

SYS 1 SYS 2 SYS 3 SYS 4 SYS 1 SYS 2 SYS 3 SYS 4

Speed %
Oil ºF(ºC) 9
Suction ºF(ºC) SYSTEM CURRENT
SYS 1 SYS 2 SYS 3 SYS 4
Discharge ºF(ºC)
Current AMPS
SAT Suction ºF(ºC)
SYS 1 SYS 2 SYS 3 SYS 4
SAT Superht ºF(ºC)
Current %FLA
SAT Discharge ºF(ºC)

Dsch Superht ºF(ºC)

JOHNSON CONTROLS 321

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

SYSTEM OPERATING CONDITIONS

ECONOMIZER SOLENOID STATUS SYSTEM STARTS

SYS 1 SYS 2 SYS 3 SYS 4 STARTS
Economizer SYSTEM 1
(ON/OFF)
SYSTEM 2
FEED/DRAIN VALVE % OPEN SYSTEM 3
SYS 1 SYS 2 SYS 3 SYS 4
SYSTEM 4
Feed Valve
OIL SEPARATOR LEVEL
Drain Valve
Check Oil Separator Oil Levels
FLASH TANK LEVEL SYS 1 SYS 2
SYS 1 SYS 2 SYS 3 SYS 4 Separator #1 #2 #3 #4
Flash Tank % Oil Level Top Glass
Level
Oil Level Bot Glass

CONDENSER FAN STAGE (0-6) SYS 3 SYS 4

SYS 1 SYS 2 SYS 3 SYS 4 Separator #1 #2 #3 #4

Fan Stage Oil Level Top Glass

Oil Level Bot Glass

COMPRESSOR HEATER (ON/OFF)
Oil Separator level should be maintained
SYS 1 SYS 2 SYS 3 SYS 4
so that an oil level is between the upper
Comp Heater and lower sight glasses.

SYSTEM RUN TIME

Days Hours Mins Sec
System 1
System 2
System 3
System 4

322 JOHNSON CONTROLS

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

WATER SYSTEM CONDITIONS CONDENSER CONDITIONS

EVAPORATOR FLOW AIR TEMPERATURE

Flow Rate GPM Air ON Temperature ºF (ºC)

Evap Pressure Drop FT / LBS Air OFF Temperature ºF (ºC)

(Circle One)

Glycol Freeze Point ºF (ºC)

JOHNSON CONTROLS 323

FORM 201.23-NM2
SECTION 9 - MAINTENANCE
ISSUE DATE: 09/30/2019

RECOMMENDED SPARE PARTS

DESCRIPTION MODEL NUMBER YCIV PART NUMBER

Fan Motor -40 024-27322-004

(Standard Low Noise) -46 024-27322-007

Fan Motor -40 024-34980-005

(Optional Ultra Low Noise) -46 024-34980-001

Fan Blade (Standard Low Noise) ALL 026-41594-000

Fan Blade (Optional Ultra Low Noise) ALL 026-41942-000

Core, Dehydrator ALL 026-37450-000

Oil, Compressor (Type "L") R-134a 011-00592-000

Sensor, Outside Air Temperature ALL 026-28663-001

Transducer, Pressure (0-275 psig) ALL 025-29139-003

High Pressure Cutout (297 psig) ALL 025-39456-000

Transducer, Suction Pressure (0-125 psig) ALL 025-29583-001

Sensor, EWT, LWT ALL 025-40334-000

Relay Output Board ALL 031-02479-002

VSD Logic Board Kit ALL 031-02507-601

Controller, Valve ALL 031-02742-000

SCR Trigger Board 60 HZ YCIV 031-02060-001

Chiller Control Board ALL 031-02478-002

Level Sensor ALL 025-40274-000

Feed Drain Valve ALL 025-41565-000

324 JOHNSON CONTROLS

FORM 201.23-NM2
ISSUE DATE: 09/30/2019

NOTES

JOHNSON CONTROLS 325

5000 Renaissance Drive, New Freedom, Pennsylvania USA 17349 1-800-524-1330 Subject to change without notice. Printed in USA
Copyright © by Johnson Controls 2019 www.johnsoncontrols.com ALL RIGHTS RESERVED
Form 201.23-NM2 (919)
Issue Date: September 30, 2019
Supersedes: 201.23-NM2 (418)

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201 23-nm2

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201 23-nm2

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AIR-COOLED SCREW

INSTALLATION, OPERATION, MAINTENANCE Supersedes: 201.23-NM2 (418) Form 201.23-NM2 (919)

YCIV STYLE A MODELS

Indicates a possible hazardous situation Identifies a hazard which could lead to

Indicates a potentially hazardous situa- Highlights additional information useful

CHANGEABILITY OF THIS DOCUMENT

NEVER short out the DC Bus to dis-

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY....................................................................... 11

SECTION 2 - PRODUCT DESCRIPTION................................................................................................................15

SECTION 3 - RIGGING, HANDLING AND STORAGE...........................................................................................29

TABLE OF CONTENTS (CONT'D)

SECTION 6 - TECHNICAL DATA............................................................................................................................51

TABLE OF CONTENTS (CONT'D)

LIST OF FIGURES (CONT'D)

FIGURE 56 - Power, Comms and System Open/Close LED's������������������������������������������������������������������������������210

TABLE 1 - Typical Compressor Starting Current (First Four Seconds Of Start-Up)����������������������������������������������� 80

SECTION 1 - GENERAL CHILLER INFORMATION AND SAFETY

The contents of this manual include suggested best

Pressure Systems Refrigerants and Oils

Electrical Use only the refrigerant specifically designated for the

THIS PAGE INTENTIONALLY LEFT BLANK

SECTION 2 - PRODUCT DESCRIPTION

INTRODUCTION General System Description

Figure 1 - CHILLER CONTROL SYSTEM

The chiller is designed to operate in ambient tempera-

Flash Tank Feed Valve/Drain Valves Oil Separator/Oil System

Power and Control Panel • Thermal Storage.

Parameters are displayed in 5 languages in either Eng- Keypad

Variable Speed Drive (VSD)

Evaporator Options Chicago Code Relief Valve

Differential Pressure Switch Vibration Isolation

COMPLETE PIN NUMBER DESCRIPTION

COMPLETE PIN NUMBER DESCRIPTION (CONT'D)

FEATURE DESCRIPTION OPTION DESCRIPTION

COMPLETE PIN NUMBER DESCRIPTION (CONT'D)

COMPLETE PIN NUMBER DESCRIPTION (CONT'D)

SECTION 3 - RIGGING, HANDLING, AND STORAGE

MOVING THE CHILLER LIFTING USING LUGS

UNIT REMOVAL FROM SHIPPING LOCKING PIN

the sides do not scrape the container. LD19197b

3. Place a lifting fixture on the forks of the lift truck

LIFT POINTS DIMENSIONS TAKEN FROM (NOT ALL POINTS ON UNITS)

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Where accumulation of snow is likely, additional SHIPPING BRACES

PIPEWORK ARRANGEMENT Option Flanges

-Isolating Valve - Normally Open

DUCTWORK CONNECTION ELECTRICAL CONNECTION

General Requirements The following connection recommendations are in-

POWER WIRING 115 VAC CONTROL SUPPLY TRANSFORMER

VOLTS FREE CONTACTS Remote Run / Stop

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Grounding Programmed Options

Operation in Sub-freezing Conditions Unit Maintenance and Shutdown in Sub-

Failure to follow Johnson Controls freeze

Equipment Pre Start-up and Start-up Checklist

CHECKLIST New Release Form 201.23-CL2 (115)

EQUIPMENT PRE-STARTUP AND STARTUP CHECKLIST

CUSTOMER: ____________________________________ JOB NAME: ____________________________________

CHILLER MODEL NO: ____________________________ UNIT SERIAL NO: _______________________________

The following work must be completed in accordance with installation instructions: 5

6. Ensure water pumps are on. Check and adjust A. START-UP

8. Press the STATUS key. If the following message B. PROGRAMMED VALUES

Remote Current Reset = _______________________

Remote Sound Limit = __________________________

Low Ambient Cutout = __________________________

Superheat JOB NAME: _____________________________

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SECTION 6 - TECHNICAL DATA

WATER PRESSURE DROP CHARTS

   ­     

WATER PRESSURE DROP CHARTS (CONT'D)

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WATER PRESSURE DROP CHARTS (CONT'D)

Pressure Drop Through Three Circuit YCIV Evaporators

WATER PRESSURE DROP CHARTS (CONT'D)

GLYCOL CORRECTION FACTORS

FIGURE 56 - Power, Comms and System Open/Close LED's��210

TABLE 1 - Typical Compressor Starting Current (First Four Seconds Of Start-Up)�� 80

CUSTOMER: JOB NAME:

CHILLER MODEL NO: UNIT SERIAL NO: ___