AIR-COOLED SCROLL CHILLER

INSTALLATION, OPERATION, MAINTENANCE Supersedes: 150.72-ICOM6 (619) Form 150.72-ICOM6 (1019)

035-23572-100

YLAA0041 - YLAA0230
AIR-COOLED SCROLL CHILLERS
WITH BRAZED PLATE HEAT EXCHANGER
STYLE B (60 HZ) 4-12 FAN
40 - 230 TON
140 - 800 KW

R-410A

Products are produced at a

Issue Date:
October 24, 2019
facility whose quality-
management systems are
ISO9001 certified.
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ISSUE DATE: 10/24/2019

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 150.72-ICOM6

ISSUE DATE: 10/24/2019

CHANGEABILITY OF THIS DOCUMENT

In complying with Johnson Controls’ policy for con- regarding the applicability of these documents, rig-
tinuous product improvement, the information con- ging, lifting, and operating/service personnel should
tained in this document is subject to change without verify whether the equipment has been modified and
notice. Johnson Controls makes no commitment to if current literature is available from the owner of the
update or provide current information automatically equipment prior to performing any work on the chiller.
to the manual or product owner. Updated manuals, if
applicable, can be obtained by contacting the nearest CHANGE BARS
Johnson Controls Service office or accessing the John-
son Controls QuickLIT website at http://cgproducts. Revisions made to this document are indicated with a
johnsoncontrols.com. line along the left or right hand column in the area the
revision was made. These revisions are to technical in-
It is the responsibility of rigging, lifting, and operating/ formation and any other changes in spelling, grammar
service personnel to verify the applicability of these or formatting are not included.
documents to the equipment. If there is any question

ASSOCIATED LITERATURE
Manual Description Form Number
Start-Up Checklist - Style A and B, 60 Hz 150.72-CL1
Limited Warranty Engineered Systems Equipment 50.05-NM2

JOHNSON CONTROLS 3
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ISSUE DATE: 10/24/2019

NOMENCLATURE

YL A A 0125 H 46 X C B

DESIGN SERIES

REFRIGERANT = R-410A

VOLTAGE CODE: DEVELOPMENT

17 = 200-3-60 LEVEL = B (BPHX)
28 = 230-3-60
40 = 380-3-60
46 = 460-3-60
58 = 575-3-60
S = STANDARD EFFICIENCY
H = HIGH EFFICIENCY

FOUR DIGIT UNIT

NUMBER

A = DESIGN SERIES

A = AIR COOLED

YL = YORK CHILLER

4 JOHNSON CONTROLS
FORM 150.72-ICOM6

ISSUE DATE: 10/24/2019

TABLE OF CONTENTS
SECTION 1 – GENERAL CHILLER INFORMATION AND SAFETY...................................................................... 11
Introduction...................................................................................................................................................... 11
Warranty.......................................................................................................................................................... 11
Handling.......................................................................................................................................................... 11
Safety and Quality........................................................................................................................................... 11
About this Manual............................................................................................................................................ 12
Misuse of Equipment....................................................................................................................................... 12

SECTION 2 – PRODUCT DESCRIPTION...............................................................................................................15

Introduction...................................................................................................................................................... 15
General System Description............................................................................................................................ 15
Communications.............................................................................................................................................. 18
Building Automation System Interface............................................................................................................. 18
Power Panel.................................................................................................................................................... 18
Accessories and Options................................................................................................................................. 18

SECTION 3 – HANDLING AND STORAGE............................................................................................................33

Delivery and Storage....................................................................................................................................... 34
Inspection........................................................................................................................................................ 34
Moving the Chiller............................................................................................................................................ 34
Lifting Weights................................................................................................................................................. 36
Lifting Using Lugs............................................................................................................................................ 36
Lifting Using Shackles..................................................................................................................................... 36

SECTION 4 – INSTALLATION.................................................................................................................................37
Installation Checklist........................................................................................................................................ 37
Startup/Commissioning................................................................................................................................... 37
Location and Clearances................................................................................................................................. 37
Spring Isolators (Optional)............................................................................................................................... 38
Compressor Mounting..................................................................................................................................... 38
Chilled Liquid Piping........................................................................................................................................ 38
Pipework Arrangement.................................................................................................................................... 39
Wiring.............................................................................................................................................................. 39
Relief Valves.................................................................................................................................................... 40
High Pressure Cutout...................................................................................................................................... 40
Single-Point Supply Connection – Terminal Block, Non-Fused
Disconnect Switch or Circuit Breaker.............................................................................................................. 41

SECTION 5 – TECHNICAL DATA...........................................................................................................................47

Physical Data YLAA0041 – YLAA0230 60 Hz................................................................................................. 50
Electrical Data................................................................................................................................................. 54
Compressor Heaters....................................................................................................................................... 54
Electrical Notes............................................................................................................................................... 65
Weight Distribution and Isolator Mounting Positions....................................................................................... 99
Clearances.................................................................................................................................................... 100
Isolator Locations.......................................................................................................................................... 101
Isolator Information........................................................................................................................................ 104

JOHNSON CONTROLS 5
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TABLE OF CONTENTS (CONT’D)

SECTION 6 – COMMISSIONING........................................................................................................................... 111
Preparation – Power Off................................................................................................................................ 111
Preparation – Power On................................................................................................................................ 114
How to Commission the Pump VFD.............................................................................................................. 115

SECTION 7 – UNIT CONTROLS...........................................................................................................................121

Introduction.................................................................................................................................................... 121
IPU II and I/O Boards.................................................................................................................................... 121
Transformer .................................................................................................................................................. 122
Display........................................................................................................................................................... 122
Keypad.......................................................................................................................................................... 122
Unit Switch.................................................................................................................................................... 122
Battery Back-Up............................................................................................................................................ 122
Programming # Of Compressors................................................................................................................... 122
Status Key..................................................................................................................................................... 123
Display/Print Keys......................................................................................................................................... 131
Entry Keys..................................................................................................................................................... 139
Set Points Keys............................................................................................................................................. 140
Schedule/Advance Day Key.......................................................................................................................... 141
Program Key................................................................................................................................................. 143
Unit Keys ...................................................................................................................................................... 149
Bacnet, Modbus, N2, and Yorktalk 2 Communications................................................................................. 157

SECTION 8 – UNIT OPERATION..........................................................................................................................171

Capacity Control............................................................................................................................................ 171
Suction Pressure Limit Controls.................................................................................................................... 172
Discharge Pressure Limit Controls................................................................................................................ 172
Leaving Chilled Liquid Control....................................................................................................................... 172
Leaving Chilled Liquid Control Override to Reduce Cycling.......................................................................... 173
Leaving Chilled Liquid System Lead/Lag and Compressor Sequencing....................................................... 174
Return Chilled Liquid Control........................................................................................................................ 174
Return Chilled Liquid System Lead/Lag and Compressor Sequencing........................................................ 175
Anti-Recycle Timer........................................................................................................................................ 175
Anti-Coincidence Timer................................................................................................................................. 175
Evaporator Pump Control and York Hydro Kit Pump Control........................................................................ 175
Evaporator Heater Control............................................................................................................................ 176
Pumpdown Control........................................................................................................................................ 176
Standard Condenser Fan Control................................................................................................................. 176
VSD Fan........................................................................................................................................................ 176
Changing the Switch Point of the Thermal Dispersion Flow Switch.............................................................. 176
Load Limiting................................................................................................................................................. 180
Compressor Run Status................................................................................................................................ 180
Alarm Status.................................................................................................................................................. 180
Remote BAS/EMS Temperature Reset Using a Voltage or Current Signal................................................... 181

6 JOHNSON CONTROLS
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ISSUE DATE: 10/24/2019

TABLE OF CONTENTS (CONT’D)

SECTION 9 – SERVICE AND TROUBLESHOOTING...........................................................................................183
Clearing History Buffers................................................................................................................................ 183
Resetting System Lockout Faults.................................................................................................................. 183
Service Mode................................................................................................................................................ 183
Service Mode – Outputs................................................................................................................................ 183
Service Mode – Chiller Configuration............................................................................................................ 184
Service Mode – Analog and Digital Inputs..................................................................................................... 184
Control Inputs/Outputs.................................................................................................................................. 185
Checking Inputs and Outputs........................................................................................................................ 187
Optional Printer Installation........................................................................................................................... 193
Troubleshooting............................................................................................................................................. 195

SECTION 10 – MAINTENANCE............................................................................................................................197
Compressors................................................................................................................................................. 197
Condenser Fan Motors.................................................................................................................................. 197
Condenser MCHX Cleaning.......................................................................................................................... 197
Operating Parameters................................................................................................................................... 198
On-Board Battery Back-Up............................................................................................................................ 198
Thermal Dispersion Flow Switch................................................................................................................... 198
Brazed Plate Heat Exchanger (Evaporator) Heater...................................................................................... 198
Overall Unit Inspection.................................................................................................................................. 198
Temperature.................................................................................................................................................. 201

JOHNSON CONTROLS 7
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ISSUE DATE: 10/24/2019

LIST OF FIGURES

FIGURE 1 - Compressor Enclosure for YLAA0041HE��������������������������������������������������������������������������������������������16

FIGURE 2 - Unit Components (Front)���������������������������������������������������������������������������������������������������������������������21
FIGURE 3 - Unit Components (Side)����������������������������������������������������������������������������������������������������������������������22
FIGURE 4 - Power Panel Components�������������������������������������������������������������������������������������������������������������������23
FIGURE 5 - Power Panel / Control Components����������������������������������������������������������������������������������������������������24
FIGURE 6 - Process and Instrumentation Diagram������������������������������������������������������������������������������������������������31
FIGURE 7 - Rigging and Lifting Label���������������������������������������������������������������������������������������������������������������������33
FIGURE 8 - Unit Rigging/Lifting �����������������������������������������������������������������������������������������������������������������������������35
FIGURE 9 - Chilled Liquid System �������������������������������������������������������������������������������������������������������������������������39
FIGURE 10 - Single-Point Supply Connection – Terminal Block, Non-Fused Disconnect Switch or Circuit
Breaker����������������������������������������������������������������������������������������������������������������������������������������������41
FIGURE 11 - Control Wiring Inputs�������������������������������������������������������������������������������������������������������������������������42
FIGURE 12 - Thermal Dispersion Flow Switch�������������������������������������������������������������������������������������������������������44
FIGURE 13 - (Combine Together)���������������������������������������������������������������������������������������������������������������������������44
FIGURE 14 - Control Wiring Outputs����������������������������������������������������������������������������������������������������������������������46
FIGURE 15 - Elementary Wiring Diagram���������������������������������������������������������������������������������������������������������������70
FIGURE 16 - Elementary Wiring Diagram���������������������������������������������������������������������������������������������������������������72
FIGURE 17 - Fan Wiring, Standard Air Flow�����������������������������������������������������������������������������������������������������������74
FIGURE 18 - Fan Wiring, High Air Flow������������������������������������������������������������������������������������������������������������������76
FIGURE 19 - Single and Dual Point Wiring Options�����������������������������������������������������������������������������������������������78
FIGURE 20 - Pump Wiring��������������������������������������������������������������������������������������������������������������������������������������80
FIGURE 21 - EEV Controller Elementary Diagram�������������������������������������������������������������������������������������������������82
FIGURE 22 - Compressor Wiring����������������������������������������������������������������������������������������������������������������������������84
FIGURE 23 - Power Options Connection Diagram�������������������������������������������������������������������������������������������������86
FIGURE 24 - Power Panel��������������������������������������������������������������������������������������������������������������������������������������88
FIGURE 25 - Micro Panel Connections�������������������������������������������������������������������������������������������������������������������90
FIGURE 26 - Four Fan Units Dimensions – YLAA0041HE, YLAA0048HE, YLAA0058HE, YLAA0065HE,
YLAA0081HE, YLAA0082HE������������������������������������������������������������������������������������������������������������92
FIGURE 27 - Four Fan Units Dimensions – YLAA0070SE, YLAA0080SE, YLAA0089SE������������������������������������� 93
FIGURE 28 - Five Fan Units Dimensions – YLAA0100SE��������������������������������������������������������������������������������������94
FIGURE 29 - Six Fan Units Dimensions – YLAA0092HE, YLAA0101HE, YLAA0115SE, YLAA0120SE���������������� 95
FIGURE 30 - Eight Fan Units Dimensions – YLAA0125HE, YLAA0136SE, YLAA0139HE, YLAA0142HE,
YLAA150SE, YLAA0155SE ��������������������������������������������������������������������������������������������������������������96
FIGURE 31 - Ten Fan Units Dimensions – YLAA0170SE, YLAA0156HE, YLAA0175HE��������������������������������������� 97
FIGURE 32 - Twelve Fan Units Dimensions - YLAA200HE, YLAA0230HE������������������������������������������������������������ 98
FIGURE 33 - Sample Printout Supplied in the Isolator Package and in the Chiller Panel Literature Packet���������� 99
FIGURE 34 - Unit Clearances – All Models�����������������������������������������������������������������������������������������������������������100
FIGURE 35 - EEV IB-G Interface Board��������������������������������������������������������������������������������������������������������������� 113
FIGURE 36 - LED Indicator Buttons���������������������������������������������������������������������������������������������������������������������� 116
FIGURE 37 - Flow Switch Set������������������������������������������������������������������������������������������������������������������������������� 116
FIGURE 38 - Flow Below the Representation Range������������������������������������������������������������������������������������������� 116
FIGURE 39 - Flow Exceeds the Representation Range��������������������������������������������������������������������������������������� 116
FIGURE 40 - Status Key Messages Quick Reference List�����������������������������������������������������������������������������������130
FIGURE 41 - Operation Data��������������������������������������������������������������������������������������������������������������������������������134
FIGURE 42 - Set Points Quick Reference List������������������������������������������������������������������������������������������������������146
FIGURE 43 - Unit Keys Options Programming Quick Reference List�������������������������������������������������������������������156
FIGURE 44 - Micro Panel Connections�����������������������������������������������������������������������������������������������������������������158
FIGURE 45 - Leaving Water Temperature Control Example���������������������������������������������������������������������������������172
FIGURE 46 - Set Point Adjust�������������������������������������������������������������������������������������������������������������������������������173
FIGURE 47 - Condenser Fan Locations���������������������������������������������������������������������������������������������������������������177
FIGURE 48 - Microboard Layout���������������������������������������������������������������������������������������������������������������������������186
FIGURE 49 - I/O Board Relay Contact Architecture����������������������������������������������������������������������������������������������190
FIGURE 50 - Printer to Microboard Electrical Connections����������������������������������������������������������������������������������194

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FORM 150.72-ICOM6

ISSUE DATE: 10/24/2019

LIST OF TABLES

TABLE 1 - Canadian Registration Numbers�����������������������������������������������������������������������������������������������������������16

TABLE 2 - Complete Pin Number Description��������������������������������������������������������������������������������������������������������25
TABLE 3 - Chemical Specification of Water������������������������������������������������������������������������������������������������������������43
TABLE 4 - Temperatures and Flows�����������������������������������������������������������������������������������������������������������������������47
TABLE 5 - Ethylene and Propylene Glycol Correction Factors�������������������������������������������������������������������������������49
TABLE 6 - Physical Data (English) 60 Hz���������������������������������������������������������������������������������������������������������������50
TABLE 7 - Micropanel Power Supply����������������������������������������������������������������������������������������������������������������������54
TABLE 8 - Voltage Range���������������������������������������������������������������������������������������������������������������������������������������54
TABLE 9 - Pump Electrical Data 60 Hz�������������������������������������������������������������������������������������������������������������������55
TABLE 10 - Transformer Load��������������������������������������������������������������������������������������������������������������������������������55
TABLE 11 - Electrical Data Without Pumps������������������������������������������������������������������������������������������������������������56
TABLE 12 - Wiring Lugs������������������������������������������������������������������������������������������������������������������������������������������62
TABLE 13 - YLAA Fault and Inhibit Codes������������������������������������������������������������������������������������������������������������129
TABLE 14 - Legend�����������������������������������������������������������������������������������������������������������������������������������������������129
TABLE 15 - Cooling Set Point, Programmable Limits, and Defaults���������������������������������������������������������������������142
TABLE 16 - Program Key Limits and Default��������������������������������������������������������������������������������������������������������145
TABLE 17 - Program Key Limits and Default��������������������������������������������������������������������������������������������������������147
TABLE 18 - Minimum, Maximum and Default Values�������������������������������������������������������������������������������������������158
TABLE 19 - Values Required for BAS Communication�����������������������������������������������������������������������������������������159
TABLE 20 - Real Time Error Numbers������������������������������������������������������������������������������������������������������������������160
TABLE 21 - Native Bacnet, Modbus and N2 Communications Data Map������������������������������������������������������������ 161
TABLE 22 - Yorktalk 2 Communications Data Map�����������������������������������������������������������������������������������������������165
TABLE 23 - Sample Compressor Staging for Return Water Control��������������������������������������������������������������������173
TABLE 24 - Return Chilled Liquid Control for 4 Compressors (6 Steps)�������������������������������������������������������������� 173
TABLE 25 - Lead/Lag Return Chilled Liquid Control for 4 Compressors (6 Steps)���������������������������������������������� 174
TABLE 26 - YLAA Standard Condenser Fan Control Using Discharge Pressure Only (2, 3, or 4 Fans Per
System)���������������������������������������������������������������������������������������������������������������������������������������������178
TABLE 27 - YLAA Standard Condenser Fan Control Using Discharge Pressure Only (5 or 6 Fans Per
System)���������������������������������������������������������������������������������������������������������������������������������������������179
TABLE 28 - Compressor Operation Load Limiting������������������������������������������������������������������������������������������������180
TABLE 29 - I/O Digital Inputs��������������������������������������������������������������������������������������������������������������������������������185
TABLE 30 - I/O Digital Outputs�����������������������������������������������������������������������������������������������������������������������������185
TABLE 31 - I/O Analog Inputs�������������������������������������������������������������������������������������������������������������������������������185
TABLE 32 - I/O Analog Outputs����������������������������������������������������������������������������������������������������������������������������185
TABLE 33 - Outdoor Air Sensor Temperature/Voltage/Correlation�����������������������������������������������������������������������187
TABLE 34 - Entering/Leaving Chilled Liquid Temp. Sensor, Temperature/Voltage Correlation���������������������������� 188
TABLE 35 - Pressure Transducers�����������������������������������������������������������������������������������������������������������������������189
TABLE 36 - Data Logging to Flash�����������������������������������������������������������������������������������������������������������������������191
TABLE 37 - Troubleshooting���������������������������������������������������������������������������������������������������������������������������������195
TABLE 38 - SI Metric Conversion�������������������������������������������������������������������������������������������������������������������������201

JOHNSON CONTROLS 9
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10 JOHNSON CONTROLS
FORM 150.72-ICOM6
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SECTION 1 – GENERAL CHILLER INFORMATION AND SAFETY 1

INTRODUCTION
YORK YLAA chillers are manufactured to the highest serial number information is printed on the unit identi-
design and construction standards to ensure high per- fication plate.
formance, reliability, and adaptability to all types of air
conditioning installations. The unit warranty will be void if any modification to
the unit is carried out without prior written approval
Rigging and lifting should only be done by a profes- from Johnson Controls.
sional rigger in accordance with a written rigging and
lifting plan. The most appropriate rigging and lifting For warranty purposes, the following conditions must
method will depend on job specific factors, such as the be satisfied:
rigging equipment available and site needs. Therefore • The initial start of the unit must be carried out by
a professional rigger must determine the rigging and trained personnel from an Authorized Johnson
lifting method to be used, and it is beyond the scope of Controls Service Center (see SECTION 6 – COM-
the manual to specify rigging and lifting details. MISSIONING).
This manual contains all the information required for • Only genuine YORK approved spare parts, oils,
correct installation and commissioning of the unit, to- coolants, and refrigerants must be used.
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- (see SECTION 10 – MAINTENANCE).
stallation, commissioning and maintenance tasks must
• Failure to satisfy any of these conditions will auto-
only be performed by suitably trained and qualified
matically void the warranty (see Warranty on this
personnel.
page).
The manufacturer will not be liable for any injury or
damage caused by incorrect installation, commission- HANDLING
ing, operation, or maintenance resulting from a failure These units are shipped as completely assembled units
to follow the procedures and instructions detailed in containing full operating charge, and care should be
the manuals. taken to avoid damage due to rough handling.

WARRANTY SAFETY AND QUALITY

Johnson Controls warrants all equipment and materi- Standards for Safety and Quality
als against defects in workmanship and materials for a
period of eighteen months from date of shipment, or 12 YLAA chillers are designed and built within an ISO
months from date of start-up, whichever occurs first, 9002 accredited design and manufacturing organiza-
unless labor or extended warranty has been purchased tion. The chillers comply with the applicable sections
as part of the contract. of the following Standards and Codes:

The warranty is limited to parts only replacement and • ANSI/ASHRAE Standard 15 - Safety Code for
shipping of any faulty part, or sub-assembly, which has Mechanical Refrigeration.
failed due to poor quality or manufacturing errors. All • ANSI/NFPA Standard 70 - National Electrical
claims must be supported by evidence that the failure Code (NEC).
has occurred within the warranty period, and that the
unit has been operated within the designed parameters • ASME Boiler and Pressure Vessel Code - Section
specified. VIII Division 1.

All warranty claims must specify the unit model, serial • ARI Standard 550/590 - Positive Displacement
number, order number, and run hours/starts. Model and Compressors and Air Cooled Rotary Screw Water
Chilling Packages.

JOHNSON CONTROLS 11
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• ASHRAE 90.1 - Energy Efficiency compliance. Structural Support

• Conform to Intertek Testing Services, formerly Structural support of the unit must be provided as in-
ETL, for construction of chillers and provide dicated in these instructions. Failure to provide proper
ETL/cETL listing label. support may result in injury to the operator, or damage
to the equipment and/or building.
• Manufactured in facility registered to ISO 9002.
• OSHA – Occupational Safety and Health Act. Mechanical Strength
The unit is not designed to withstand loads or stresses
In addition, the chillers conform to Underwriters Labo-
from adjacent equipment, pipework or structures. Ad-
ratories (U.L.) for construction of chillers and provide
ditional components must not be mounted on the unit.
U.L./cU.L. Listing Label.
Any such extraneous loads may cause structural failure
Responsibility for Safety and may result in injury to the operator, or damage to
the equipment.
Every care has been taken in the design and manufac-
ture of the unit to ensure compliance with the safety General Access
requirements listed above. However, the individual
There are a number of areas and features, which may
rigging, lifting, maintaining, operating, or working on
be a hazard and potentially cause injury when working
any machinery is primarily responsible for:
on the unit unless suitable safety precautions are taken.
• Personal safety, safety of other personnel, and the It is important to ensure access to the unit is restricted
machinery. to suitably qualified persons who are familiar with the
potential hazards and precautions necessary for safe
• Correct utilization of the machinery in accordance operation and maintenance of equipment containing
with the procedures detailed in the manuals. high temperatures, pressures and voltages.
ABOUT THIS MANUAL
Pressure Systems
The contents of this manual include suggested best The unit contains refrigerant vapor and liquid under
working practices and procedures. These are issued for pressure, release of which can be a danger and cause
guidance only, and they do not take precedence over injury. The user should ensure that care is taken during
the above stated individual responsibility and/or local installation, operation and maintenance to avoid dam-
safety regulations. age to the pressure system. No attempt should be made
This manual and any other document supplied with to gain access to the component parts of the pressure
the unit are the property of Johnson Controls which re- system other than by suitably trained and qualified per-
serves all rights. They may not be reproduced, in whole sonnel.
or in part, without prior written authorization from an
Electrical
authorized Johnson Controls representative.
The unit must be grounded. No installation or main-
MISUSE OF EQUIPMENT tenance work should be attempted on the electrical
equipment without first switching power OFF, isolat-
Suitability for Application ing and locking-off the power supply. Servicing and
The unit is intended for cooling water or glycol solu- maintenance on live equipment must only be per-
tions and is not suitable for purposes other than those formed by suitably trained and qualified personnel. No
specified in these instructions. Any use of the equipment attempt should be made to gain access to the control
other than its intended use, or operation of the equip- panel or electrical enclosures during normal operation
ment contrary to the relevant procedures may result in of the unit.
injury to the operator, or damage to the equipment.
The unit must not be operated outside the design pa-
rameters specified in this manual.

12 JOHNSON CONTROLS
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Rotating Parts High Temperature and Pressure Cleaning

1
Fan guards must be fitted at all times and not removed High temperature and pressure cleaning methods (for
unless the power supply has been isolated. If ductwork example steam cleaning) should not be used on any part
is to be fitted, requiring the wire fan guards to be re- of the pressure system as this may cause operation of
moved, alternative safety measures must be taken to the pressure relief device(s). Detergents and solvents,
protect against the risk of injury from rotating fans. which may cause corrosion, should also be avoided.

Sharp Edges Emergency Shutdown

The fins on the air-cooled condenser coils have sharp In case of emergency, the control panel is fitted with
metal edges. Reasonable care should be taken when a Unit Switch to stop the unit in an emergency. When
working in contact with the coils to avoid the risk of operated, it removes the low voltage 120 VAC electri-
minor abrasions and lacerations. The use of gloves is cal supply from the unit controller, thus shutting down
recommended. the unit.
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.

Refrigerants and Oils

Refrigerants and oils used in the unit are generally non-
toxic, non-flammable and non-corrosive, and pose no
special safety hazards. Use of gloves and safety glasses
is, however, recommended when working on the unit.
The build up of refrigerant vapor, from a leak for ex-
ample, does pose a risk of asphyxiation in confined or
enclosed spaces and attention should be given to good
ventilation.

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SECTION 2 – PRODUCT DESCRIPTION

INTRODUCTION GENERAL SYSTEM DESCRIPTION

YORK YLAA Air-Cooled Scroll Chillers provide Compressors
chilled water for all air conditioning applications us-
The chiller has suction-gas cooled, hermetic, scroll
ing central station air handling or terminal units. They
compressors. The YLAA compressors incorporate a
are completely self-contained and are designed for out-
compliant scroll design in both the axial and radial
door (roof or ground level) installation. Each complete
direction. All rotating parts are statically and dynami-
packaged unit includes hermetic scroll compressors, a
cally balanced. A large internal volume and oil res-
liquid cooler, air cooled condenser, a charge of Zero
ervoir provides greater liquid tolerance. Compressor
Ozone Depletion Potential Refrigerant R-410A and
crankcase heaters are also included for extra protection
a weather resistant microprocessor control center, all
against liquid migration.
mounted on a rugged steel base.
For YLAA0041HE chillers, the compressor’s IP level
The units are completely assembled with all intercon-
cannot meet the specification for outdoor applications.
necting refrigerant piping and internal wiring, ready
Individually, both system 1 and system 2 have a com-
for field installation.
pressor enclosure designed to protect the compressors
Before delivery, the packaged unit is pressure-tested, from rain introduction. It is very critical to keep the
evacuated, and fully charged with Refrigerant R-410A compressor enclosure in complete and good condition.
and oil. After assembly, a complete operational test is
Do not dismantle the compressor enclosure. The com-
performed with water flowing through the cooler to as-
pressor enclosure may need to be dismantled in special
sure that the refrigeration circuit operates correctly.
circumstances, such as, to replace the compressor. In
The unit structure is heavy-gauge, galvanized steel. these cases, ensure to set up the compressor enclosure
This galvanized steel is coated with baked-on powder before you leave the site.
paint, which, when subjected to ASTM B117 1000
hour, salt spray testing, yields a minimum ASTM 1654
rating of “6”. Units are designed in accordance with
NFPA 70 (National Electric Code), ASHRAE/ANSI 15
Safety code for mechanical refrigeration, ASME, and
rated in accordance with ARI Standard 550/590.

JOHNSON CONTROLS 15
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COMPRESSOR label or marking is not provided on the evaporator. Ac-

ENCLOSURE cording to the Canadian Standards Association’s Boil-
er, Pressure Vessel, and Pressure Piping Code B-51
(2009 version), a product registered as a category “H”
fitting does not require a label or marking displaying
the CRN.

Table 1 - CANADIAN REGISTRATION NUMBERS

CANADIAN PROVINCE CRN #
BC OH13953.51
AB OH13953.52
ON OH13953.5
PQ/MB/SK OH13953.56
NB OH13953.57
LD28293 NS OH13953.58
PEI OH13953.59
Figure 1 - COMPRESSOR ENCLOSURE FOR
YLAA0041HE NF OH13953.50
NU OH13953.5N
NWT OH13953.5T
Brazed Plate Evaporator
YU OH13953.5Y
The compact, high efficiency Brazed Plate Heat Ex-
changer (BPHE) is constructed with 316L stainless Condenser
steel corrugated channel plates with a filler material
between each plate. It offers excellent heat transfer Microchannel Condenser (MCHX)
performance with a compact size and low weight, re- MCHX Condensers are made of a single material to
ducing structural steel requirements on the job site. avoid galvanic corrosion due to dissimilar metals.
MCHX and headers are brazed as one piece. Integral
The heat exchanger is manufactured in a precisely con- sub cooling is included. The design working pressure
trolled vacuum-brazing process that allows the filler of the MCHX is 650 psig (45 bar). MCHX Condenser
material to form a brazed joint at every contact point is easily washable with clear water.
between the plates, creating complex channels. The ar-
rangement is similar to older plate and frame technol- Fans
ogy, but without gaskets and frame parts.
The condenser fans are composed of corrosion resis-
Water inlet and outlet connections are grooved for tant aluminum hub and glass-fiber reinforced poly-
compatibility with field supplied ANSI/AWWA C-606 propylene composite blades molded into a low noise
couplings. airfoil section. They are designed for maximum effi-
ciency and are statically and dynamically balanced for
The evaporator is equipped with a thermostat-con- vibration free operation. They are directly driven by
trolled heater. The heater provides freeze protection independent motors, and positioned for vertical air dis-
for the evaporator down to -20°F (-29°C) ambient. The charge. The fan guards are constructed of heavy gauge,
evaporator is covered with 3/4 in. flexible, closed-cell, rust resistant, coated steel. All blades are statically and
foam insulation (K=0.25). dynamically balanced for vibration free operation.
A 1/16 in. (1.6 mm) mesh wye-strainer is provided as
Motors
standard for installation upstream of the heat exchang-
er to prevent clogging from water system debris. The fan motors are Totally Enclosed Air-Over, and are
current protected. They feature ball bearings that are
Canadian Registration Number (CRN) double sealed and permanently lubricated.
Application & Proof of Conformance
Since all YLAA brazed plate evaporators are catego-
rized as pressure “H” fittings per CSA-B51, a CRN

16 JOHNSON CONTROLS
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Control Center Unit Keys

All controls are contained in a NEMA 3R/12 cabinet This section is used to:
with hinged outer door and includes a Liquid Crystal
Display with Light Emitting Diode backlighting for • Set time 2
outdoor viewing: • Set unit options

• Two display lines Oper Data Key

• Twenty characters per line The microprocessor control center is capable of dis-
playing the following:
Display/Print Keys
• Color coded 12-button non-tactile keypad with sec- • Return and leaving liquid temperature
tions for display and print of typical information: • Low leaving liquid temperature cutout setting
• Chilled liquid temperatures • Low ambient temperature cutout setting
• Ambient temperature • Outdoor air temperature
• System pressures (each circuit) • English or Metric data
• Operating hours and starts (each compressor) • Suction pressure cutout setting
• Print calls up to the liquid crystal display • Each system suction pressure
• Operating data for the systems • Discharge pressure (optional)
• History of fault shutdown data for up to the last • Liquid Temperature Reset via a Johnson Controls
six fault shutdown conditions. ISN DDC or Building Automation System (by
• An RS-232 port, in conjunction with this press-to- others) via a 4 to 20 mA or 0 to 10 VDC input
print button, is provided to permit the capability • Anti-recycle timer status for each system
of hard copy print-outs via a separate printer (by • Anti-coincident system start timer condition
others). • Compressor run status
Entry Keys • No cooling load condition
This section is used to enter set points or modify sys- • Day, date and time
tem values. • Daily start/stop times
• Holiday status
Set Points Keys
• Automatic or manual system lead/lag control
Updating can be performed to:
• Lead system definition
• Chilled liquid temperature set point and range • Compressor starts and operating hours
• Remote reset temperature range • (each compressor)
• Set daily schedule/holiday for start/stop • Status of hot gas valves, evaporator heater
• Manual override for servicing and fan operation
• Low and high ambient cutouts • Run permissive status
• Number of compressors • Number of compressors running
• Low liquid temperature cutout • Liquid solenoid valve status
• Low suction pressure cutout • Load and unload timer status
• High discharge pressure cutout • Water pump status
• Anti-recycle timer (compressor start cycle time) Provisions are included for: pumpdown at shutdown;
• Anti-coincident timer (delay compressor starts) optional remote chilled water temperature reset and
two steps of demand load limiting from an external
building automation system. Unit alarm contacts are
standard.

JOHNSON CONTROLS 17
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The operating program is stored in non-volatile memo- Single-Point Supply Terminal Block
ry battery backed RAM to eliminate chiller failure due Includes enclosure, terminal-block, and interconnect-
to AC powered failure/battery discharge. Programmed ing wiring to the compressors. Separate external pro-
set points are retained in lithium battery-backed RTC tection must be supplied, by others, in the incoming
memory for 5 years minimum. compressor-power wiring. (Do not include this op-
tion if either the Single-Point Non-Fused Disconnect
COMMUNICATIONS
Switch or Single-Point Circuit Breaker options have
• Native communication capability for BACnet been included.)
(MS/TP) and Modbus.
• Optional communication available for N2 and Single-Point Non-Fused Disconnect Switch
LON via eLink Gateway option. Unit-mounted disconnect switch with external, lockable
handle (in compliance with Article 440-14 of NEC), can
BUILDING AUTOMATION SYSTEM be supplied to isolate the unit power voltage for servic-
INTERFACE ing. Separate external fusing must be supplied, by others
The Microprocessor Board can accept a 4 mA to 20 in the power wiring, which must comply with the Na-
mA, or 0 VDC to 10 VDC input to reset the leaving tional Electrical Code and/or local codes.
chiller liquid temperature from a Building Automation
System. Single-Point Circuit Breaker
A unit mounted circuit breaker with external, lockable
• The standard unit capabilities include remote handle (in compliance with NEC Article 440-14), can be
start-stop, remote water temperature reset via a supplied to isolate the power voltage for servicing. (This
PWM 4 mA to 20 mA or 0 VDC to 10 VDC input option includes the Single-Point Power connection.)
signal or up to two stages of demand (load) limit-
ing depending on model. Control Transformer
• The standard control panel can be directly con- Converts unit power voltage to 115-1-60 (2.0 or 3.0
nected to a Johnson Controls Building Automated KVA capacity). Factory mounting includes primary
System. and secondary wiring between the transformer and the
control panel. (Factory-mounted)
POWER PANEL
Each panel contains: Control Options
Ambient Kit (Low)
• Compressor power terminals
Units will operate to 30°F (-1.1°C). This accessory in-
• Compressor motor starting contactors per I.E.C.** cludes all necessary components to permit chiller op-
• Control power terminals to accept incoming for eration to 0°F (-18°C) or -10°F (-23°C) with variable
115-1-60 control power speed fans. (This option includes the Discharge Pressure
• Fan contactors and overload current protection Transducer / Readout Capability option.) For proper
head pressure control in applications below 30°F (-1°C)
The power wiring is routed through liquid-tight con- where wind gusts may exceed 5 mph, it is recommend-
duit to the compressors and fans. ed that Optional Condenser Louvered Enclosure Panels
also be included. (Factory-mounted)
ACCESSORIES AND OPTIONS
High Ambient Kit With Sunshield
Power Options
Allows units to operate when the ambient temperature
Compressor Power Connections is above 115°F (46°C). Includes sun shield panels and
Single-point terminal block connection(s) are provid- discharge pressure transducers.
ed as standard. The following power connections are
available as options. (See electrical data for specific Language LCD and Keypad Display
voltage and options availability.) (Factory-mounted) Spanish, French, German, and Italian unit LCD con-
trols and keypad display available. Standard language
is English.

18 JOHNSON CONTROLS
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Compressor, Piping, Evaporator Options to capture the maximum amount of heat. Capable of
Low Temperature Glycol recovering up to 85% total heat of rejection (cooling
load plus work input); temperatures as high as 140°F
Replaces standard Thermostatic Expansion Valves
with Electronic Expansion Valves to achieve leaving
(60°C) are possible. 2
glycol temperatures as low as 10°F (-12°C). Required Hydro-Kit
for any leaving liquid temperature below 30°F (-1°C).
Factory installed Hydro-Kit suitable for water and gly-
Electronic Expansion Valves permit operation at both
col systems with up to 35% glycol at leaving tempera-
low temperatures and comfort cooling applications
tures down to 20°F. The hydro-kit option is available
without a capacity loss or derate at either condition.
in a single or dual configuration (dual as standby duty
(Factory installed)
only), with totally enclosed permanently lubricated
Chicago Code Relief Valves pump motors.
Unit will be provided with relief valves to meet Chi- The hydro-kit option comes standard with a balancing
cago code requirements. (Factory-Mounted) valve, discharge check valve, discharge shutoff valve,
thermal dispersion flow switch, pressure ports, inlet
Service Suction Isolation Valve wye-strainer, bleed and drain valves and frost protection.
Service suction (ball-type) isolation valves are added
Service shut off valves, additional pressure ports and ex-
to unit per system (discharge service ball-type isolation
pansion tanks are optional within the hydro-kit option.
valve is standard on each circuit). (Factory-Mounted)
Condenser and Cabinet Options
Hot Gas By-Pass
MCHX Condenser protection against corrosive envi-
Permits continuous, stable operation at capacities below
ronments is available by choosing any of the following
the minimum step of compressor unloading to as low
options. For additional application recommendations,
as 5% capacity (depending on both the unit and operat-
Refer to FORM 150.12-ES1. (Factory-Mounted)
ing conditions) by introducing an artificial load on the
cooler. Hot gas by-pass is installed on only refrigerant Post-Coated Dipped MCHX Condenser
system #1 on two-circuited units. (Factory-Mounted)
The unit MCHX is constructed with post dipped-epoxy
Flanges (ANSI/AWWA C-606 couplings Type) MCHX condenser. This is recommended for seashore
and other corrosive applications (with the exception of
Consists of (2) Flange adapter for grooved end pipe (stan-
strong alkalies, oxidizers and wet bromine, chlorine
dard 150 psi [10.5 bar] cooler). (Not available on optional
and fluorine in concentrations greater than 100 ppm).
DX cooler 300 psig DWP waterside.) (Field-mounted)
Enclosure Panels (Unit)
Flow Switch
Tamper proof Enclosure Panels prevent unauthorized
A thermal dispersion type flow switch provides ac-
access to units. Enclosure Panels can provide an aes-
curate, low maintenance flow proving and is included
thetically pleasing alternative to expensive fencing.
standard. It is factory wired and installed in the exten-
Additionally, for proper head pressure control, Johnson
sion pipe between evaporator outlet and edge of chill-
Controls recommends the use of Condenser Louvered
er. The extension pipe is secured to the chiller frame
Panels for winter applications where wind gusts may
for shipping to avoid risk of damage to evaporator
exceed five miles per hour. The following types of en-
and is easily attached to the evaporator at startup us-
closure panels are available:
ing the supplied ANSI/AWWA C-606 connector. The
flow switch can be deleted if alternate or existing flow • Wire Panels (Full Unit) - Consists of welded
switch is field supplied. wire-mesh guards mounted on the exterior of the
unit. Prevents unauthorized access, yet provides
Heat Recovery Condenser free air flow. (Factory-Mounted)
A partially condensing refrigerant to liquid condenser • Wire/Louvered Panels - Consists of welded
recovers heat off both refrigerant circuits and rejects wire-mesh panels on the bottom part of unit and
into a single liquid circuit. Factory installed between louvered panels on the condenser section of the
the compressor discharge and the condenser (air) coils unit. (Factory-Mounted)

JOHNSON CONTROLS 19
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• Louvered Panels (MCHX Condenser Only) - Sound Attenuation

Louvered Panels are mounted on the sides and One or both of the following sound attenuation options
ends of the MCHX condenser for protection. are recommended for residential or other similar sound
(Factory-Mounted) sensitive locations:
• Louvered Panels (Full Unit) - Louvered panels
• Compressor Acoustic Sound Blanket - Each
surround the front, back, and sides of the unit.
compressor is individually enclosed by an acous-
They prevent unauthorized access and visually
tic sound blanket. The sound blankets are made
screen unit components. Unrestricted air flow
with one layer of acoustical absorbent textile fiber
is permitted through generously sized louvered
of 5/8 in. (15 mm) thickness; one layer of anti-
openings. This option is applicable for any out-
vibrating heavy material thickness of 1/8 in. (3
door design ambient temperature up to 115°F
mm). Both are closed by two sheets of welded
(46°C). (Factory-Mounted)
PVC, reinforced for temperature and UV resis-
MCHX End Hail Guard tance. (Factory-Mounted)
Louvered panel attached to exposed MCHX end. (Fac- • Ultra Quiet Fans - Lower RPM, 8-pole fan mo-
tory-Mounted) tors are used with steeper-pitch fans. (Factory-
Mounted)
Vibration Isolators
Level adjusting, spring type 1 in. (25.4 mm) or seismic
deflection or neoprene pad isolators for mounting un-
der unit base rails. (Field-mounted)

20 JOHNSON CONTROLS
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3
POWER POWER
PANEL PANEL

4 6

ITEM DESCRIPTION
1 Fan assemblies
2 MCHX condenser
3 Control panel
4 Compressors
Receiver included with optional heat
5
recovery condenser
6 Filter driers

Figure 2 - UNIT COMPONENTS (FRONT)

JOHNSON CONTROLS 21
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7 6

ITEM DESCRIPTION
1 Fan deck
2 MCHX condenser
3 Coil headers
4 Control and power panels
5 Compressors
6 Brazed plate evaporator
7 Formed steel base rails
8 Hydro-kit pumps and motors (optional)

Figure 3 - UNIT COMPONENTS (SIDE)

22 JOHNSON CONTROLS
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SECTION 2 – PRODUCT DESCRIPTION
ISSUE DATE: 10/24/2019

1 2 3 4

5 6
LD13248

ITEM DESCRIPTION
1 Fan contactor
2 Fan fuses
3 Fan contactor
4 Disconnect switch (optional)
5 XTBF1
6 Compressor contactors
7 Compressor overloads

Figure 4 - POWER PANEL COMPONENTS

JOHNSON CONTROLS 23
 FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
ISSUE DATE: 10/24/2019

2
1
3 4

12

8
9
11
10
LD13248

ITEM DESCRIPTION
1 Fan contactor
2 Fan fuses
3 Control relay
4 Microcomputer control center
5 Display
6 Keypad
7 XTBC1
8 Microboard
9 XTCB2
10 XTBF2
11 Compressor contactors
12 Compressor overloads

Figure 5 - POWER PANEL / CONTROL COMPONENTS

24 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
ISSUE DATE: 10/24/2019

PRODUCT IDENTIFICATION NUMBER (PIN)

Table 2 - COMPLETE PIN NUMBER DESCRIPTION

FEATURE
FEATURE
OPTION OPTION DESCRIPTION
2
DESCRIPTION
MODEL Model (PIN 1-4) YLAA
0041 0041
0048 0048
0058 0058
0065 0065
0070 0070
0080 0080
0081 0081
0089 0089
0092 0092
0100 0100
Capacity 0101 0101
CAPACITY
(PIN 5-8) 0115 0115
0120 0120
0125 0125
0136 0136
0142 0142
0150 0150
0155 0155
0156 0156
0170 0170
0175 0175
0200 0200
0230 0230
Unit Designator S Standard Efficiency
UNIT
(PIN 9) H High Efficiency
REF. Refrigerant (PIN 10) E R-410A
17 200/3/60
28 230/3/60
Voltage 40 380/3/60
VOLTS
(PIN 11 & 12) 46 460/3/60
50 380-415/3/50
58 575/3/60
Starter X Across the Line starter
STARTER
(PIN 13) T Soft Start
A Design Series A (MicroChannel) Copeland Compressor
Design Series C (MicroChannel CE/ETL Panel) Copeland Com-
Design Series C
DESIGN pressor
(PIN 14)
D Design Series D (MicroChannel) Bitzer Compressor
F Design Series F (MicroChannel CE/ETL Panel) Bitzer Compressor
Development Level
DEV B Development Level B
(PIN 15)
SX SP Supply TB
SD SP NF Disconnect Switch
Power Field
POWER BC SP Circuit Breaker w/ Lockable Handle, 65 kA SCWR
(PIN 16 &17)
BX SP Circuit Breaker w/ Lockable Handle
MB MP Supply w/Ind Sys CB&L Ext Handles

JOHNSON CONTROLS 25
 FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
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TABLE 2 - COMPLETE PIN NUMBER DESCRIPTION (CONT’D)

FEATURE
FEATURE OPTION OPTION DESCRIPTION
DESCRIPTION
X No Control Transformer Required
Cntrl Transformer
TRANS T Control Transformer Required
(PIN 18)
Q Special Control Transformer Required
X No Power Capacitor required
Power Factor Capacitor
PFC C Power Capacitor required
(PIN 19)
Q Special Power Capacitor required
H High Ambient Kit Standard (factory)
A Both Low/High Ambient Kit required (factory)
Ambient Kits
AMB B Both Low/High Ambient Kit w/Sunshield (factory)
(PIN 20)
S High Ambient Kit w/Sunshield (factory)
Q Special Ambient Kit required
X No Selection
Bas Reset/Offset L LON E-Link
BAS
(PIN 21) S SC-Equip Board
Q Special Quote
X English
S Spanish
C Chinese (Simplified) (Not Applicable to eLogia)
Language English with Chinese Displayed Board
LCD E
(PIN 22) (Not Applicable to eLogia)
F French
G German
I Italian
Readout Kits B Both Discharge & Suction Pressure Transducer Readout required
RDOUT
(PIN 23) Q Special Pressure Readout required
C European Saftey Code ( CE )
Safety Codes
SAFETY G China Safety Code (GB) (Not Applicable to eLogia)
(PIN 24)
L N American Safety Code (cUL/cETL)
X X
SENSOR PIN 25
Q Special Quote
Motor Current Module C Motor Current Module
PUMP
(PIN 26) Q Special Quote
Remote Panel X No Remote Panel required
REMOTE
(PIN 27) Q Special Remote Panel required
Sequence Kit X No Sequence Kit required
SEQ
(PIN 28) Q Special Sequence Kit required
Leaving Water Temp
TEMP NUM Leaving Water Temp = Temp/Num Deg.
(PIN 29,30)
X No Chicago Code Kit required
B Both Chicago Code & Serv Isolation
C Chicago Code Kit required
Chicago Code Kit
CHICAGO G Both Suction Service Valve and Dual Relief Valve (Europe only)
(PIN 31)
R Dual Relief Valves no Suction Service Valve (Europe only)
S Service Isolation Valves
Q Special Chicago Code Kit required
X Standard Valves Req’d
Valves
VALVES E Electronic Expansion Valve
(PIN 32)
Q Special Optional Valves Req’d

26 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
ISSUE DATE: 10/24/2019

TABLE 2 - COMPLETE PIN NUMBER DESCRIPTION (CONT’D)

FEATURE
FEATURE OPTION OPTION DESCRIPTION
DESCRIPTION
X No Hot Gas Bypass required
HGBP
Hot Gas Bypass
1 Hot Gas Bypass required - 1 circuit 2
(PIN 33)
Q Special Hot Gas Bypass required
X X
GAUGE PIN 34
Q Special Quote
X X
OVERLOAD PIN 35
Q Special Quote
K Quick Start
PIN36 PIN 36
Q Special Quote
Crankcase Heater H Crankcase Heater Standard
HTR
(Pin 37) Q Special Crankcase Heater required
DWP X 150 psig DWP Waterside
DWP
(PIN 38) 3 300 psig DWP Waterside
X Standard Insulation
Insulation
INS D Double Thick Insulation
(PIN 39)
Q Special Insulation required
X No Flanges required
Flanges
FLANGES V Grooved Flanges required
(PIN 40)
Q Special Flanges required
X No Flow Switch required
Flow Switch
FLOW S One Flow Switch Required
(PIN 41)
Y Flow Switch With Extension Kit
A ASME Pressure Vessel Codes
Vessel Codes E PED Pressure Vessel Codes
VESSEL
(PIN 42) G GB Pressure Vessel Codes
Q Special Quote
Cooler X Standard Cooler Required
CLR
(PIN 43) R Remote Cooler Required
X No Dispersion Switch Required
G Flow Switch >= 10% Glycol
PIN44 PIN 44
W Flow Switch < 10% Glycol
Q Special Quote
X Aluminum Coils
Coils
COILS P Post Coated Dipped Coil
(PIN 45)
T Post Coated Microchannel Coils
X No Option required
Heat Recovery
HEAT H Heat Recovery
(PIN 46)
Q Special Quote
Fan Motors X TEAO Fan Motors
FANMOTORS
(PIN 47) Q Special Fan Motors required

JOHNSON CONTROLS 27
 FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
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TABLE 2 - COMPLETE PIN NUMBER DESCRIPTION (CONT’D)

FEATURE
FEATURE OPTION OPTION DESCRIPTION
DESCRIPTION
X No Enclosure 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)
5 Louvered (Cond only) Encl Panels (factory)
6 Louvered (Cond only) Encl Panels (field)
Enclosure Panels 7 Louvered (Full Unit) Encl Panels (factory)
ENCL
(PIN 48) 8 Louvered (Full Unit) Encl Panels (field)
9 End Louver (End Hail Guard) Encl Panels (factory)
A End Louver (End Hail Guard) Encl Panels (field)
B Aesthetic Panel Kit only (factory)
C Aesthetic Panel Kit only (field)
D Aesthetic Panel Kit plus Hail Guards (factory)
E Aesthetic Panel Kit plus Hail Guards (field)
Q Special Enclosure Panels
X No Acoustic Blanket required
Acoustic Blanket B Acoustic Blanket Required
ACOUSTIC
(PIN 49) E Acoustic Enclosure
Q Special Acoustic Blanket required
X No Documents Required
A Base, Material & Witness Documents
SR Documents B Base Document
SRDOCS
(PIN 50) M Base & Material Documents
W Base & Witness Documents
Q Special Quote
X Standard York/JCI Branding
A Quantech Branding
PIN 51 PIN 51 B York/JCI Branding with Quantech bag
S SASO Compliant Label
Q Special Quote
X Standard Low Sound Fan Required
L Ultra Quiet Fans Required
G High Air Flow Fan Requied
V Standard Low Sound Fan with VSD Required
FANS Sound Fans M Ultra Quiet Fans with VSD Required
(PIN 52) A High Air Flow Fan Requied (Vendor Specific)
E Low Sound Fan Required (Vendor Specific)
S High Static Fan Required (Vendor Specific)
U Ultra Quiet Fans Required (Vendor Specific)
2 2-Speed Fans Required (Vendor Specific)
X X
PAINT PIN 53
Q Special Quote

28 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
ISSUE DATE: 10/24/2019

TABLE 2 - COMPLETE PIN NUMBER DESCRIPTION (CONT’D)

FEATURE
FEATURE OPTION OPTION DESCRIPTION
DESCRIPTION
X No Isolators required 2
1 1 in. Deflection Isolators required
Vibration Isolators
ISOL N Neoprene Isolators required
(PIN 54)
S 2 in. Deflection Isolators required
Q Special Isolators required
PIN 55 PIN 55 Marketing Purposes Only!
PIN 56 PIN 56 Marketing Purposes Only!
X No Containerization required with Shipping Bag
A Buy American Act Compliance with Shipping Bag
Both Buy American Act Compliance and Container Ready without
B
Shipping Bag (Factory Prep)
C Container Shipped without Shipping Bag (Factory Load)
D Container Shipped with Shipping Bag (Factory Load US Port)
E Container Shipped with Shipping Bag (Factory Load Mexico Port)
Ship Instructions F Container Ready with Shipping Bag (Factory Prep)
SHIP
(PIN 57) Both Buy America Act Compliance and Container Shipped with
G
Shipping Bag (Factory Prep)
Container Shipped without Shipping Bag (Factory Load Mexico
M
Port)
N No Containerization required without Shipping Bag
P Container Ready without Shipping Bag (Factory Prep)
U Buy American Act Compliance without Shipping Bag
Q Special quote
PIN 58 PIN 58 Marketing Purposes Only!

JOHNSON CONTROLS 29
 FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
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TABLE 2 - COMPLETE PIN NUMBER DESCRIPTION (CONT’D)

FEATURE
FEATURE OPTION OPTION DESCRIPTION
DESCRIPTION
X No Pump
A Pump Kit A
B Pump Kit B
C Pump Kit C
D Pump Kit D
E Pump Kit E
F Pump Kit F
G Pump Kit G
H Pump Kit H
I Pump Kit I
J Pump Kit J
K Pump Kit K
Pump Package
PKG L Pump Kit L
(PIN 59)
M Pump Kit M
N Pump Kit N
O Pump Kit O
P Pump Kit P
R Pump Kit R
S Pump Kit S
T Pump Kit T
U Pump Kit U
V Pump Kit V
W Pump Kit W
Y Pump Kit Y
Z Pump Kit Z
X No Option
1 Single Pump, Standard
2 Single Pump, Full Feature
Pump Package Options
PKGOPT 3 Dual Pump, Standard
(PIN 60)
4 Dual Pump, Full Feature
5 VSD Single Pump, Full Feature
6 VSD Dual Pump, Full Feature
PIN 61 PIN 61 Marketing Purposes Only!
GZ Guangzhou, China
LOC Mfg Location MTY Monterrey, Mexico
SAT San Antonio, Texas

30 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 2 – PRODUCT DESCRIPTION
ISSUE DATE: 10/24/2019

2
Control Functions:
DV - Display Value Fans Fans
CHT - Chilled Liquid Temperature Components:
HPC - High Pressure Cutout
LPC - Low Pressure Cutout Pressure Relief Valve
HPL - High Pressure Load Limiting
LTC - Low Temperature Cutout Service (Ball) Valve

Expansion Valve
Condenser S
Solenoid Valve

Sight Glass

Sensor Pressure
or Temperature
DV
585 PSIG HPL P Service (Stop) Access Valve
PS HPC

650 PSIG PS Pressure Switch

Filter Drier
(Removable Core)
See P.R.V.
Options
ZCPR-3 ZCPR-2 ZCPR-1

Chilled
Liquid
450 PSIG

Compressors Evaporator

DV
LPC P Ambient Air Sensor
DV
HTC T
LTC

T
Chilled
Liquid
DV
S
CHT
LTC

-YLLSV
LD13139

Figure 6 - PROCESS AND INSTRUMENTATION DIAGRAM

Low pressure liquid refrigerant enters the cooler and high pressure vapor is fed to the air cooled condenser
is evaporated and superheated by the heat energy ab- coil and fans where the heat is removed. The fully con-
sorbed from the chilled liquid passing through the densed and subcooled liquid passes through the expan-
cooler shell. Low pressure vapor enters at the compres- sion valve where pressure is reduced and further cool-
sor where pressure and superheat are increased. The ing takes place before entering to the cooler.

JOHNSON CONTROLS 31
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THIS PAGE INTENTIONALLY LEFT BLANK

32 JOHNSON CONTROLS
FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 3 – HANDLING AND STORAGE

LD18119

Figure 7 - RIGGING AND LIFTING LABEL

Read carefully the rigging warning label Rigging and lifting should only be done by
on the chiller packaging. a professional rigger in accordance with a
written rigging 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 rig-
ger must determine the rigging and lifting
method to be used and it is beyond the
scope of the manual to specify rigging
and lifting details.

JOHNSON CONTROLS 33
 FORM 150.72-ICOM6
SECTION 3 – HANDLING AND STORAGE
ISSUE DATE: 10/24/2019

DELIVERY AND STORAGE INSPECTION

To ensure consistent quality and maximum reliability, Remove any transit packing and inspect the unit to en-
all units are tested and inspected before leaving the fac- sure that all components have been delivered and that
tory. Units are shipped completely assembled and con- no damage has occurred during transit. If any damage
taining refrigerant under pressure. Units are shipped is evident, it should be noted on the carrier’s freight bill
without export crating unless crating has been speci- and a claim entered in accordance with the instructions
fied on the Sales Order. given on the advice note.
If the unit is to be put into storage, before installation, Major damage must be reported immediately to your
the following precautions should be observed: local Johnson Controls representative.
• The chiller must be “blocked” so that the base is MOVING THE CHILLER
not permitted to sag or bow.
Before moving the unit, ensure that the installation site
• Ensure that all openings, such as water connec- is suitable for installing the unit and is easily capable
tions, are securely capped. of supporting the weight of the unit and all associated
• Do not store where exposed to ambient air tem- services.
peratures exceeding 112°F (44.5°C). The unit must only be lifted by the base
frame at the points provided. Never move
• The condensers should be covered to protect the
the unit on rollers, or lift the unit using a
fins from potential damage and corrosion, particu-
forklift truck.
larly where building work is in progress.
• The unit should be stored in a location where there
is minimal activity in order to limit the risk of ac- Care should be taken to avoid damaging the condenser
cidental physical damage. cooling fins when moving the unit.
• To prevent inadvertent operation of the pressure
relief devices the unit must not be steam cleaned.
• It is recommended that the unit is periodically in-
spected during storage.

34 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 3 – HANDLING AND STORAGE
ISSUE DATE: 10/24/2019

C D D E F

Control Panel

Control Panel
3

Y Y
A B A B C

X X LD18121

LD18120

4 - 6 Fan Units 8 Fan Units

E F G H
Control Panel

Y A B C D

LD27282

10 Fan Units

F G H I J
Control Panel

Y
A B C D E

LD27283
X

12 Fan Units

Figure 8 - UNIT RIGGING/LIFTING

JOHNSON CONTROLS 35
 FORM 150.72-ICOM6
SECTION 3 – HANDLING AND STORAGE
ISSUE DATE: 10/24/2019

LIFTING WEIGHTS LIFTING USING SHACKLES

See the unit nameplate for unit shipping weight. Note The shackles should be inserted into the respective
that weight may vary depending on unit configuration holes in the base frame and secured from the inside.
at the time of lifting. See page 54 for further infor-
mation regarding shipping and operating weights. Use spreader bars to avoid lifting chains hitting the
chiller. Various methods of spreader bar arrangements
LIFTING USING LUGS may be used, keeping in mind the intent is to keep the
unit stable and to keep the chains from hitting the chill-
Units are provided with lifting holes in the base frame er and causing damage.
which accept the accessory lifting lug set as shown in
the figure below. The lugs (RH and LH) should be in- Lifting Instructions are placed on a label on the chiller
serted into the respective holes in the base frame and and on the shipping bag.
turned so that the spring loaded pin engages into the
hole and the flanges on the lug lock behind the hole.
The lugs should be attached to the cables/chains using
shackles or safety hooks.
CORRECT INCORRECT

LUG
LUG LIFTING HOLE
IN BASE FRAME FLANGE
FLANGE

LOCKING PIN

LIFTING HOLE
LOCKING PIN IN BASE FRAME

LUG

LOCKING
PIN

FLANGE

36 JOHNSON CONTROLS
FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 4 – INSTALLATION

To ensure warranty coverage, this equip- In installations where winter operation is intended and
ment must be commissioned and serviced snow accumulations are expected, additional height
by an authorized Johnson Controls must be provided to ensure normal condenser air flow.
service mechanic or a qualified service
person experienced in chiller installation. Clearances are listed in Figure 34 on page 100.
Installation must comply with all appli-
Foundation
cable codes, particularly in regard to elec-
trical wiring and other safety elements The unit should be mounted on a flat and level founda-
such as relief valves, HP cutout settings, tion, floor, or rooftop capable of supporting the entire
design working pressures, and ventilation operating weight of the equipment. See Physical Data
requirements consistent with the amount YLAA0041 – YLAA0230 60 Hz on page 50 for oper-
and type of refrigerant charge. ating weight. If the unit is elevated beyond the normal

Lethal voltages exist within the control

reach of service personnel, a suitable catwalk must be 4
capable of supporting service personnel, their equip-
panels. Before servicing, open and tag ment, and the compressors.
all disconnect switches.
Ground Level Locations
INSTALLATION CHECKLIST
It is important that the units be installed on a substan-
The following items, 1 through 6, must be checked be- tial base that will not settle. A one piece concrete slab
fore placing the units in operation. with footers extended below the frost line is highly rec-
ommended. Additionally, the slab should not be tied to
1. Inspect the unit for shipping damage. the main building foundations as noise and vibration
2. Rig unit using spreader bars. may be transmitted. Mounting holes (5/8 in. dia.) are
provided in the steel channel for bolting the unit to its
3. Open the unit only to install water piping sys- foundation (see Dimensions on page 35).
tem. Do not remove protective covers from water
connections until piping is ready for attachment. For ground level installations, precautions should be
Check water piping to ensure cleanliness. taken to protect the unit from tampering by or injury to
unauthorized persons. Screws and/or latches on access
4. Pipe unit using good piping practice (refer to
panels will prevent casual tampering. However, further
ASHRAE handbook section 215 and 195).
safety precautions such as a fenced-in enclosure or
5. Check to see that wiring is tight and meets NEC locking devices on the panels may be advisable.
and local codes.
Rooftop Locations
6. Check to see that the unit is installed and operated
Choose a spot with adequate structural strength to
within limitations (See Operational Limitations
safely support the entire weight of the unit and service
on page 47).
personnel. Care must be taken not to damage the roof.
STARTUP/COMMISSIONING
Consult the building contractor or architect if the roof
The following pages outline detailed procedures to be is bonded. Roof installations should have wooden
followed to install and start-up the chiller. beams (treated to reduce deterioration), cork, rubber,
or spring type vibration isolators under the base to min-
LOCATION AND CLEARANCES imize vibration.
Units are designed for outdoor installations on ground
Noise Sensitive Locations
level, rooftop, or beside a building. Location should
be selected for minimum sun exposure and to insure Efforts should be made to assure that the chiller is not
adequate supply of fresh air for the condenser. The located next to occupied spaces or noise sensitive areas
units must be installed with sufficient clearances for air where chiller noise level would be a problem. Chiller
entrance to the condenser coil, for air discharge away noise is a result of compressor and fan operation.
from the condenser, and for servicing access.

JOHNSON CONTROLS 37
 FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

SPRING ISOLATORS (OPTIONAL)

When ordered, isolators will be furnished. Identify the 1. The chilled liquid piping system should be laid out
isolator, locate at the proper mounting point, and adjust so that the circulating pump discharges directly into
per instructions. the cooler. The suction for this pump should be tak-
en from the piping system return line and not the
COMPRESSOR MOUNTING cooler. This piping scheme is recommended, but is
The compressors are mounted on four rubber isolators. not mandatory.
The mounting bolts should not be loosened or adjusted 2. The inlet and outlet cooler connection sizes are pro-
at installation of the chiller. vided in Table 6 on page 50 (Physical Data).

CHILLED LIQUID PIPING 3. A 1/16 in. mesh strainer is provided at the cooler
inlet line just ahead of the cooler. This is important
General – When the unit(s) has been located in its fi- to protect the cooler from entrance of large particles
nal position, the unit water piping may be connected. which could cause damage to the evaporator.
Normal installation precautions should be observed in
order to receive maximum operating efficiencies. Pip- 4. All chilled liquid piping should be thoroughly
ing should be kept free of all foreign matter. All chilled flushed to free it from foreign material before the
water evaporator piping must comply in all respects system is placed into operation. Use care not to
with local plumbing codes and ordinances. flush any foreign material into or through the cooler.

Since elbows, tees and valves decrease pump capacity, 5. As an aid to servicing, thermometers and pressure
all piping should be kept as straight and as simple as gauges should be installed in the inlet and outlet wa-
possible. All piping must be supported independent ter lines.
of the chiller. 6. The chilled water lines that are exposed to outdoor
Consideration should be given to com- ambients should be wrapped with supplemental
pressor access when laying out water pip- heater cable and insulated to protect against freeze-
ing. Routing the water piping too close to up during low ambient periods, and to prevent for-
the unit could make compressor servicing/ mation of condensation on lines in warm humid
replacement difficult. locations. As an alternative, ethylene glycol should
be added to protect against freeze-up during low
Hand stop valves should be installed in all lines to fa- ambient periods.
cilitate servicing. 7. A chilled water flow switch, (either by YORK or
others) MUST be installed in the leaving water pip-
Piping to the inlet and outlet connections of the chiller
ing of the cooler. If the factory wired flow switch
should include high-pressure rubber hose or piping
and extension pipe kit is not selected, the field in-
loops to ensure against transmission of water pump vi-
stalled flow switch must be installed so that there
bration. The necessary components must be obtained
is a straight horizontal run of at least 5 diameters
in the field.
on each side of the switch. Adjust the flow switch
Drain connections should be provided at all low points paddle to the size of the pipe in which it is to be in-
to permit complete drainage of the cooler and system stalled (refer to the manufacturer’s instructions fur-
water piping. nished with the switch). The switch is to be wired
to Terminals 13 and 14 of XTBC1 located in the
A small valve or valves should be installed at the high- control panel, as shown on the unit wiring diagram.
est point or points in the chilled water piping to allow
The Flow Switch MUST NOT be used
any trapped air to be purged. Vent and drain connec-
to start and stop the chiller (i.e. starting
tions should be extended beyond the insulation to make
and stopping the chilled water pump). It
them accessible.
is intended only as a safety switch.
The piping to and from the cooler must be designed to
suit the individual installation. It is important that the
following considerations be observed:

38 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

PIPEWORK ARRANGEMENT When ducting is to be fitted to the fan discharge it is

The following are suggested pipework arrangements recommended that the duct should be the same cross-
for single unit installations, for multiple unit installa- sectional area as the fan outlet and straight for at least
tions, each unit should be piped as shown. three feet (1 meter) to obtain static regain from the fan.
Duct work should be suspended with flexible hang-
Recommendations of the Building Services Re- ers to prevent noise and vibration being transmitted to
search Association. the structure. A flexible joint is also recommended be-
tween the duct attached to the fan and the next section
for the same reason. Flexible connectors should not be
allowed to concertina.
B The unit is not designed to take structural loading. No
P significant amount of weight should be allowed to
H rest on the fan outlet flange, deck assemblies, or con-
denser coil module. No more than 3 feet (1 meter) of
X light construction duct work should be supported by 4
the unit. Where cross winds may occur, any duct work
must be supported to prevent side loading on the unit.
LD06596a
If the ducts from two or more fans are to be combined
ISOLATING VALVE - NORMALLY OPEN into a common duct, back-flow dampers should be fit-
ted in the individual fan ducts. This will prevent re-
ISOLATING VALVE - NORMALLY CLOSED
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
FLOW REGULATING VALVE removed to fit duct work, adequate alternative precau-
tions must be taken to ensure persons cannot be harmed
or put at risk from rotating fan blades.
FLOW MEASUREMENT DEVICE
WIRING
Liquid Chillers are shipped with all factory-mounted
STRAINER controls wired for operation.
Field Wiring – Power wiring must be provided through
a fused disconnect switch to the unit terminals (or op-
PRESSURE TAPPING tional molded disconnect switch) in accordance with
NEC or local code requirements. Minimum circuit am-
pacity and maximum dual element fuse size are given
FLOW SWITCH in the Electrical Data tables.
Copper power wiring only should be used for supply-
FLANGED CONNECTION
LD06597A
ing power to the chiller. This is recommended to avoid
safety and reliability issues resulting from connection
Figure 9 - CHILLED LIQUID SYSTEM failure at the power connections to the chiller. Alumi-
num wiring is not recommended due to thermal char-
Fan Discharge Ducting acteristics that may cause loose terminations result-
ing from the contraction and expansion of the wiring.
The following duct work recommendations are intend-
Aluminum oxide may also build up at the termination
ed to ensure satisfactory operation of the unit. Failure
causing hot spots and eventual failure. If aluminum
to follow these recommendations could cause damage
wiring is used to supply power to the chiller, AL-CU
to the unit, or loss of performance, and may invalidate
compression fittings should be used to transition from
the warranty.

JOHNSON CONTROLS 39
 FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

aluminum to copper. This transition should be done in Alarm Status Contacts

an external box separate to the power panel. Copper Normally‑open contacts are available for each re­
conductors can then be run from the box to the chiller. frigerant system. These normally‑open contacts close
A 120-1-60, 15 A source must be supplied for the con- when the system is functioning normally. The respec-
trol panel through a fused disconnect when a control tive contacts will open when the unit is shut down on
panel transformer (optional) is not provided (See Fig- a unit fault, or locked out on a system fault. Field con-
ure 10 on page 41). nections are at XTBC2 - Terminals 29 to 30 (system 1),
and Terminals 31 to 32 (system 2).
See unit wiring diagrams for field and power wiring
connections, chilled water pump starter contacts, alarm Remote Start/Stop Contacts
contacts, compressor run status contacts, PWM input, To remotely start and stop the chiller, dry contacts can
and load limit input. See SECTION 8 – UNIT OPERA- be wired across terminals 13 and 51 on XTBC1. See
TION for a detailed description of operation concern- Figure 5 on page 24, Figure 11 on page 42, and
ing aforementioned contacts and inputs. unit wiring diagram.
RELIEF VALVES Remote Emergency Cutoff
Relief valves are located on both the high and low Immediate shutdown of the chiller can be accomplished
pressure side of the piping. High side relief valve pres- by opening a field-installed dry contact to break the
sure setting is 650 psig. Low side relief valve pressure elec­trical circuit between Terminals 5 to L on terminal
setting is 450 psig. block XTBC2. The unit is shipped with a factory jump-
er installed between Terminals 5 to L, which must be
HIGH PRESSURE CUTOUT removed if emergency shutdown contacts are installed.
A high pressure cutout is installed in the discharge pip- See Figure 11 on page 42and unit wiring diagram.
ing of each system. The cutout opens at 585 psig plus
or minus 10 psig and closes at 440 psig plus or minus Remote Temp Reset Input
25 psig. The Remote Temp Reset input allows reset of the
chilled liquid set point by supplying a voltage or cur-
Evaporator Pump Start Contacts rent signal field wiring should be connected to XTBC1
Terminal block XTBC2 – Terminals 23 (115 VAC) to – Terminals A+ to A-. A detailed explanation is pro-
24, are nor­mally- open contacts that can be used to vided in SECTION 7 – UNIT CONTROLS. See Figure
switch field supplied power to provide a start signal 4 on page 23, Figure 5 on page 24, and unit wir-
to the evapo­rator pump contactor. The contacts will be ing diagram.
closed when any of the following conditions occur:
Load Limit Input
1. Low Leaving Chilled Liquid Fault
Load limiting is a feature that prevents the unit from
2. Any compressor is running
loading beyond a desired value. The unit can be “load
3. Daily schedule is not programmed OFF and the limited” either 33%, 40%, 50%, 66%, or 80%, depend-
Unit Switch is ON
ing on the number of compressors on unit. The field
The pump will not run if the micro panel has been pow- connections are wired to XTBC1 – Terminals 13 to 21,
ered up for less than 30 seconds, or if the pump has run and work in conjunction with the PWM inputs. A de-
in the last 30 seconds, to prevent pump motor over- tailed explanation is provided in SECTION 7 – UNIT
heating. See Figure 14 on page 46 and unit wiring CONTROLS. See Figure 5 on page 24, Figure 11 on
dia­gram. page 42, and unit wiring diagram.
System Run Contacts When using the Load Limit feature, the
PWM feature will not function. Simul-
Contacts are available to monitor system status. Nor-
taneous operation of load limiting and
mally‑open auxiliary contacts from each com­pressor
temperature reset (PWM input) cannot
contactor are wired in parallel with XTBC2 – Termi-
be done.
nals 25 to 26 for system 1, and XTBC2 – Terminals 27
to 28 for system 2. See Figure 5 on page 24, Figure
14 on page 46 and unit wiring diagram.

40 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED

DISCONNECT SWITCH OR CIRCUIT BREAKER

Power Panel Control Panel

14

13 XTBC1 4
Terminal Block, MICROPANEL
NF Disconnect SW
or Circuit Breaker

Flow Switch
1L1 1L2 1L3
GRD

L 2
XTBC2

Field Provided 120-1-60

Micropanel Power Supply if
Control Transformer not supplied.
Field Field supplied control power wiring
Provided must be run in separate grounded
Unit Power conduit. Never run control wiring
See electrical note 9 Supply in the same conduit with power
wiring.
LD13141

It is possible that multiple sources of The unit evaporator heater uses 120 VAC.
power can be supplying the unit power Disconnecting 120 VAC power from the
panel. To prevent serious injury or death, unit, at or below freezing temperatures,
the technician should verify that NO can result in damage to the evaporator
LETHAL VOLTAGES are present inside and unit as a result of the chilled liquid
the panel AFTER disconnecting power, freezing.
Before working on equipment.

Figure 10 - SINGLE-POINT SUPPLY CONNECTION – TERMINAL BLOCK, NON-FUSED DISCONNECT

SWITCH OR CIRCUIT BREAKER

JOHNSON CONTROLS 41
 FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

USER CONTROL WIRING INPUTS

A-
INTERNAL
INTERNALWIRING
WIRINGTO
TOOPTIONAL
OPTIONALREMOTE
REMOTETEMP.
TEMP.RESET
RESETBOARD
BOARD
A+
14
FLOW SWITCH
13
50
13
21
REMOTE UNLOAD STEP 1
13
20
PWM REMOTE TEMP RESET
13
19 INTERNAL WIRING TO 2-KCR CONTROL RELAY
13
18 INTERNAL WIRING TO 1-KCR CONTROL RELAY
13
51
REMOTE START / STOP
13
XTBC1 LD13130

All externally supplied contacts must be The unit evaporator heater uses 120 VAC.
capable of switching 24 VDC / 115 VAC. Disconnecting 120 VAC power from the
Gold contacts are recommended. If sup- unit, at or below freezing temperatures,
plied contacts are from a Relay / Contac- can result in damage to the evaporator
tor (Inductive Load), the coil of the Relay and unit as a result of the chilled liquid
/ Contactor must be suppressed. Typical freezing.
suppressor is P/N 031-00808-000.
It is possible that multiple sources of
power can be supplying the unit power
panel. To prevent serious injury or death,
the technician should verify that NO
LETHAL VOLTAGES are present inside
the panel AFTER disconnecting power,
Before working on equipment.

Figure 11 - CONTROL WIRING INPUTS

42 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

Specification of Water
The water side channels in a BPHE may clog if parti- Back flushing is an ideal method to clear out the block-
cles such as silt, pipe slag, biological matter, and so on, age. Contact a professional company if a chemical
are not prevented from entering the unit. These matters cleaning to BPHE is required. Chemical cleaning is
could otherwise block the channels, causing bad per- one of the high risks of BPHE corrosion, any chemical
formance and increased pressure drop. Under extreme corrosion will void the warranty.
conditions, they may lead to BPHE freezing. No muddy water is permitted for use in this chiller.
The piping system must be properly flushed to clean Check the chemical specification of water in the table
out the debris and particles generated in the piping below for chemical consideration.
welding and process before the BPHE is connected.
Strainers can prevent BPHE from blocking. If any of
the media contains particles larger than 1 mm, a strain-
er with a size of 20 mesh is recommended at the up-
stream of the BPHE. 4
Table 3 - CHEMICAL SPECIFICATION OF WATER
CONCENTRATION TIME LIMIT
WATER CONTENT UNIT
(mg/l or ppm) (analyze before)
Alkalinity (HCO3-) ppm 70–300 Within 24 hrs
Sulfate (SO42-) ppm < 70 No Limit
HCO3- / SO42- - > 1.0 No Limit
Electrical Conductivity μS/cm 10–500 No Limit
pH - 7.5–10 Within 24 hrs
Ammonium (NH4+) ppm <2 Within 24 hrs
Chlorides (Cl-) ppm < 100 No Limit
Free Chlorine (Cl2) mg/L <1 Within 5 hrs
Oxygen mg/L < 0.02 Within 5 hrs
Hydrogen Sulfide (H2S) mg/L < 0.05 No Limit
Free Carbon Dioxide (CO2) mg/L <5 No Limit
Total Hardness (odH) mg/L 4.0–8.5 No Limit
Nitrate (NO3-) ppm < 100 No Limit
Iron (Fe) mg/L < 0.2 No Limit
Aluminum (Al) mg/L < 0.2 No Limit
Manganese (Mn) mg/L < 0.1 No Limit

JOHNSON CONTROLS 43
 FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

Thermal Dispersion Flow Switch:

1. Thermal Dispersion Flow Switch Operating
Principle
PIN NUMBERS
The operating principle of the thermal dispersion
flow switch is based on the calorimetric princi-
ple. It uses the cooling effect of a flowing fluid
to monitor the flow rate. The amount of thermal
energy that is removed from the tip determines the
local flow rate. This temperature-based operating
principle can reliably sense the flow of virtually
any liquid or gas.
The sensor tip of the thermal dispersion flow sen-
sor houses two transistors and a heater element.
One transistor is located in the sensor tip, closest
to the flowing fluid. This transistor is used to de-
tect changes in the flow velocity of the liquid. The LD21044
second transistor is bonded to the cylindrical wall
and is a reference for ambient fluid conditions. Figure 12 - THERMAL DISPERSION FLOW
SWITCH
In order to make the sensor sense flow, it is nec-
essary to heat one of the transistors in the probe.
b. Pin #1 and Pin #3 are used to connect with
When power is applied, the tip of the probe is
24 VAC from transformer T1 by terminal #
heated. As the fluid starts to flow, heat will be
40 and 41. (see the red dot line frame in Fig-
carried away from the sensor tip. Cooling of the
ure 15 on page 70)
first transistor is a function of how fast heat is
conducted away by the flowing liquid. The dif- c. Pin #2 and Pin #4 are used to output the sta-
ference in temperature between the two transis- tus of thermal dispersion flow switch, these 2
tors provides a measurement of fluid velocity past pins need to connected with terminal #13 and
the sensor probe. When fluid velocity is high, the #14 of XTBC1 as Figure 11 on page 42
temperature differential is small. As fluid velocity indicated.
decreases, there is an increase in the temperature
differential. ELECTRICAL DIAGRAM
NO FLOW
2. Service Information 1
L+
PROGRAMMING
The P/N of the thermal dispersion switch is 025- PIN
5
43553-000, SAP # is 618247. you can purchase
it from JCI part center through JCI service office 2 +5V DC 24VAC
close to your site.
4 DIGITAL OUTPUT
The connection of thermal dispersion switch is
1/4 in. NPT, so when replacing a flow switch with 3
L-
different connection size, the connector on the liq- LD21045

uid system need to replace as well so that it can

adapt to the thermal dispersion flow switch. Figure 13 - (COMBINE TOGETHER)
3. Wiring of Thermal Dispersion Flow Switch
a. The wire connection of thermal dispersion
switch contains 5 pins, the central pin is Pin
#5 used for programming, which is unneces-
sary for wiring. See Figure 13 on page 44.

44 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

Generally, the thermal dispersion flow switch is

shipped with the unit as a loose part.
To mount the IFM thermal dispersion switch, use the
following guidelines:
• Use a pipe coupling to mount the thermal disper- • Ensure that the sensor tip does not contact the pipe
sion flow switch. The length of the pipe coupling wall. Do not mount it in a downpipe, in which the
must be suitable to ensure that the insertion depth liquid flows downwards.
of the sensor is at least 12 mm.
• Avoid turbulence of the liquid resulting from
• Mount the thermal dispersion flow switch in hori- bends, valves, reducers, and other pipe fittings.
zontal pipes from the side. If it has to be mounted Ensure that the distance from the potential turbu-
in vertical pipes, mount the switch in the rising lence upstream or downstream of the sensor loca-
pipes. tion is at least 5 times of the pipe diameter.
• Mount the thermal dispersion flow switch on the
top of the horizontal pipes only if the pipe is fully
• Connect the control monitor with the flow sensor 4
directly. No extension cable between them is al-
filled with liquid. Mount the thermal dispersion lowed.
flow switch on the bottom of the horizontal pipes
only if the pipe is free from buildup.

JOHNSON CONTROLS 45
 FORM 150.72-ICOM6
SECTION 4 – INSTALLATION
ISSUE DATE: 10/24/2019

USER CONTROL WIRING OUTPUTS

140 INTERNAL WIRING TO EVAPORATOR HEATER

123 INTERNAL WIRING TO HOT GAS SOLENOID VALVE
32
SYSTEM 2 ALARM DRY CONTACTS (OPEN = ALARM)
31
30
SYSTEM 1 ALARM DRY CONTACTS (OPEN = ALARM)
29
28
SYSTEM 2 RUN DRY CONTACTS (CLOSE = RUN)
27
26
SYSTEM 1 RUN DRY CONTACTS (CLOSE = RUN)
25
24 EVAPORATOR PUMP DRY CONTACTS (CLOSE = RUN
23 BASED ON DAILY SCHEDULE)

Normally jumpered. 5 INTERNAL 120 VAC WIRING TO F1 FUSE

Can be used as
EMERGENCY STOP L INTERNAL 120 VAC WIRING (TYPICALLY FROM CONTROL TRANSFORMER)
contacts from an 2 INTERNAL NEUTRAL WIRING
external source.
2 INTERNAL NEUTRAL WIRING (TYPICALLY FROM CONTROL TRANSFORMER)
2 INTERNAL NEUTRAL WIRING
GND
XTBC2 LD13242

All chiller supplied contacts are rated at It is possible that multiple sources of
115 VAC, 100 VA, resistive load only, and power can be supplying the unit power
must be suppressed at the load by user panel. To prevent serious injury or death,
if powering an inductive load (Relay / the technician should verify that NO
Contactor Coil). Typical suppressor P/N LETHAL VOLTAGES are present inside
is 031-00808-000. the panel AFTER disconnecting power,
Before working on equipment.
The unit evaporator heater uses 120 VAC.
Disconnecting 120 VAC power from the
unit, at or below freezing temperatures,
can result in damage to the evaporator
and unit as a result of the chilled liquid
freezing.

Figure 14 - CONTROL WIRING OUTPUTS

46 JOHNSON CONTROLS
FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 5 – TECHNICAL DATA

OPERATIONAL LIMITATIONS
Table 4 - TEMPERATURES AND FLOWS
UNIT TEMPERATURE WATER FLOW WATER FLOW AIR ON CONDENSER (°F)
DESIGNATION MIN 1
MAX 2 (GPM) MIN (GPM) MAX MIN3 MAX4

STANDARD EFFICIENCY

YLAA0070SE 40 55 60 325 -10 125

YLAA0080SE 40 55 100 350 -10 125

YLAA0089SE 40 55 100 400 -10 125

YLAA0100SE 40 55 100 400 -10 125

YLAA0120SE 40 55 138 525 -10 125

YLAA0136SE 40 55 115 530 -10 125

YLAA0155SE 40 55 138 525 -10 125
YLAA0170SE 40 55 150 625 -10 125

HIGH EFFICIENCY

YLAA0041HE 40 55 16 220 -10 125 5

YLAA0048HE 40 55 16 220 -10 125

YLAA0058HE 40 55 60 325 -10 125

YLAA0065HE 40 55 60 325 -10 125

YLAA0081HE 40 55 115 530 -10 125

YLAA0082HE 40 55 138 525 -10 125

YLAA0092HE 40 55 100 400 -10 125

YLAA0101HE 40 55 100 400 -10 125

YLAA0125HE 40 55 100 400 -10 125

YLAA0139HE 40 55 138 525 -10 125

YLAA0142HE 40 55 150 625 -10 125

YLAA0156HE 40 55 138 525 -10 125

YLAA0175HE 40 55 150 625 -10 125

YLAA0200HE 40 55 230 625 -10 125

YLAA0230HE 40 55 220 650 -10 125

NOTES:
1. For leaving liquid temperature below 40°F (4°C) (to 10°F [-12°C]) optional low temperature glycol kit required. Contact your
nearest Johnson Controls Office for application requirements.
2. For leaving liquid temperature higher than 55°F (13°C), contact the nearest Johnson Controls Office for application guidelines.
3. The evaporator is protected against freezing to -20°F (-29°C) with an electric heater as standard.
4. For operation at temperatures below 30°F (-1°C), install the optional Low Ambient Kit on the system.
5. For operation at temperatures below 0°F (-18°C), install the optional Low Ambient Kit with Variable Speed Fans on the system.
Excessive flow will cause damage to the
cooler. Do not exceed maximum cooler
flow. Special care should be taken when
multiple chillers are fed by a single pump.

JOHNSON CONTROLS 47
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

HEAT EXCHANGER FLOW, GPM

YLAA Evaporator Pressure Dop (IP Units)

45

40

35
Water Pressure Drop (psi)

30

25

20

15

10

10 110 210 310 410 510 610 710

Water Flow Rate (gpm)

A B C D E F G H I J LD28292a

EVAPORATOR YLAA MODELS

A 0058HE, 0065HE, 0070SE
B 0080SE
C 0082HE, 0089SE, 0092HE, 0100SE, 0101HE, 0125HE
D 0136SE, 00139HE, 0156HE, 0170SE, 0081HE
E 0120SE, 0155SE, 0142HE
F 0175HE
G 200HE
H 230HE
I 0048HE
J 0041HE

48 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

Table 5 - ETHYLENE AND PROPYLENE GLYCOL CORRECTION FACTORS

ETHYLENE GLYCOL PROPYLENE GLYCOL
% COMPR GPM F/ PRESS FREEZE % COMPR GPM F/ PRESS FREEZE
TONS TONS
WEIGHT KW TON DROP PT WEIGHT KW TON DROP PT
10.0 1.0 1.0 24.3 1.0 26.2 10.0 1.0 1.0 24.0 1.0 26.0
20.0 1.0 1.0 25.1 1.1 17.9 20.0 1.0 1.0 24.3 1.1 19.0
30.0 1.0 1.0 25.9 1.2 6.7 30.0 1.0 1.0 24.9 1.3 9.0
40.0 1.0 1.0 26.9 1.4 -8.1 40.0 1.0 1.0 25.6 1.4 -6.0
50.0 1.0 1.0 28.0 1.6 -28.9 50.0 0.9 1.0 26.6 1.7 -28.0
NOTE: Water Pressure Drop Curves may extend past the minimum and maximum water flow ranges.

JOHNSON CONTROLS 49
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

PHYSICAL DATA YLAA0041 – YLAA0230 60 HZ

Table 6 - PHYSICAL DATA (ENGLISH) 60 HZ
YLAA
REFRIGERANT R-410A STANDARD EFFICIENCY UNITS
0070SE 0080SE 0089SE 0100SE 0120SE 0136SE 0155SE 0170SE
NOMINAL RATINGS3
TONS 71.0 77.8 81.8 95.6 118.1 126.1 143.0 167.4
KW INPUT 77.5 86.3 93.0 111.5 134.6 142.6 165.0 192.1
EER 10.4 10.0 9.8 9.7 9.8 9.7 9.7 9.7
IPLV 16.1 15.6 15.8 14.5 15.0 15.8 15.8 15.6
GENERAL UNIT DATA
Length 116.1 116.1 116.1 142.7 142.7 187.7 187.7 232.7
Width 88 88 88 88 88 88 88 88
Height 94.2 94.2 94.2 94.2 94 94.2 94.2 94.2
Number Of Refrigerant Circuits 2 2 2 2 2 2 2 2
REFRIGERANT CHARGE, OPERATING
R-410A, CKT1/CKT2, LB 43/43 47/44 57/57 55/58 54/62 75/71 75/70 90/87
Oil Charge, CKT1/CKT2, Gallons 2.58/2.58 3.28/2.58 3.28/2.76 3.28/3.33 3.33/3.33 4.99/2.76 4.99/3.33 4.99/4.99
Shipping Weight 3578 3898 4168 4791 5183 6148 6414 7734
Operating Weight 3623 3954 4241 4864 5293 6232 6524 7818
COMPRESSORS, SCROLL TYPE
Compressors Per Circuit 3/3 3/3 3/3 3/2 2/2 3/3 3/2 3/3
Compressors Per Unit 6 6 6 5 4 6 5 6
NOMINAL TONS PER COMPRESSOR
Circuit 1 13 15 15 15 32 32 32 32
Circuit 2 13 13 15 32 32 15 32 32
CONDENSER
Total Face Area Ft2 106.9 106.9 106.9 133.6 160.3 213.8 213.8 267.2
Number Of Rows 1 1 1 1 1 1 1 1
Fins Per Inch 20 20 20 20 20 20 20 20
CONDENSER FANS, LOW SOUND
Number Of Fans, CKT 1/CKT 2 2/2 2/2 2/2 3/2 3/3 4/4 4/4 5/5
Fan HP 2 2 2 2 2 2 2 2
Fan RPM 1160 1160 1160 1160 1160 1160 1160 1160
Total Chiller CFM 60000 60000 60000 75000 90000 120000 120000 150000
EVAPORATOR
Water Volume, Gallons 5.4 6.7 8.8 8.8 13.2 10.0 13.2 10.0
Maximum Water Side Pressure,
150 150 150 150 150 150 150 150
PSIG
Maximum Refrigerant Side
450 450 450 450 450 450 450 450
Pressure, PSIG
Minimum Chiller Water Flow
60 100 100 100 138 115 138 150
Rate, GPM
Maximum Chiller Water Flow
325 350 400 400 525 530 525 625
Rate, GPM
Water Connections Size, Inches 3 3 3 3 3 4* 4* 4*

NOTES:
1. kW = Compressor Input Power.
2. EER = Chiller EER (includes power from compressors, fans, and the control panels 0.8 kW).
3. Rated in accordance with AHRI Standard 550/590 at an air on condenser temperature of 95°F and a leaving chilled water temperature of 44°F.
4. Additional rating information can be provided by your local Johnson Controls Sales Office.

50 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 6 - PHYSICAL DATA (ENGLISH) 60 HZ (CONT’D)

YLAA
REFRIGERANT R-410A HIGH EFFICIENCY UNITS
0041HE 0048HE 0058HE 0065HE 0081HE 0082HE 0092HE 0101HE
NOMINAL RATINGS3
TONS 39.5 48.9 57.0 62.3 78.8 77.9 85.7 98.3
KW INPUT 34.1 47.0 57.7 65.2 91.0 90.9 83.6 106.1
EER 11.6 10.9 10.6 10.4 10.4 10.3 11.0 10.1
IPLV 16.7 15.73 15.6 15.6 16.1 16.1 16.1 15.7
GENERAL UNIT DATA
Length 100.2 100.2 100.2 100.2 100.2 100.2 142.7 142.7
Width 88.0 88.0 88.0 88.0 88.0 88.0 88.0 88.0
Height 94.2 94.2 94.2 94.2 94.2 94.2 94.2 94.2
Number Of Refrigerant Circuits 2 2 2 2 2 2 2 2
REFRIGERANT CHARGE, OPERATING
R-410A, CKT1/CKT2, LB 40/40 40/42 43/43 43/43 44/44 44/44 59/55 45/65
Oil Charge, CKT1/CKT2, Gallons 0.86/0.86 0.86/0.86 2.58/2.58 2.89/2.58 2.58/2.58 2.58/2.58 2.76/2.76 3.28/3.33
Shipping Weight 3855 3724 3508 3704 4061 4213 4718 4953
Operating Weight 3877 3754 3552 3748 4145 4295 4791 5026
COMPRESSORS, SCROLL TYPE 5
Compressors Per Circuit 2/2 2/2 2/2 3/2 3/3 3/3 3/3 3/2
Compressors Per Unit 4 4 4 5 6 6 6 5
NOMINAL TONS PER COMPRESSOR
Circuit 1 10 13 15 13 15 15 15 15
Circuit 2 10 13 15 15 13 13 15 32
CONDENSER
Total Face Area Ft2 106.9 106.9 106.9 106.9 106.9 106.9 160.3 160.3
Number Of Rows 1 1 1 1 1 1 1 1
Fins Per Inch 20 20 20 20 20 20 20 20
CONDENSER FANS, LOW SOUND
Number Of Fans, CKT 1/CKT 2 2/2 2/2 2/2 2/2 2/2 2/2 3/3 4/2
Fan HP 2 2 2 2 2 2 2 2
Fan RPM 1160 1160 1160 1160 1160 1160 1160 1160
Total Chiller CFM 26800 60000 60000 60000 62400 62400 90000 90000
EVAPORATOR
Water Volume, Gallons 2.57 3.57 5.4 5.4 10 10 8.8 8.8
Maximum Water Side Pressure,
150 150 150 150 150 150 150 150
PSIG
Maximum Refrigerant Side
450 450 450 450 450 450 450 450
Pressure, PSIG
Minimum Chiller Water Flow
16 16 60 60 150 138 100 100
Rate, GPM
Maximum Chiller Water Flow
220 220 325 325 625 525 400 400
Rate, GPM
Water Connections Size, Inches 3 3 3 3 3 3 3 3

NOTES:
1. kW = Compressor Input Power.
2. EER = Chiller EER (includes power from compressors, fans, and the control panels 0.8 kW).
3. Rated in accordance with AHRI Standard 550/590 at an air on condenser temperature of 95°F and a leaving chilled water temperature of 44°F.
4. Additional rating information can be provided by your local Johnson Controls Sales Office.

JOHNSON CONTROLS 51
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 6 - PHYSICAL DATA (ENGLISH) 60 HZ (CONT’D)

YLAA
REFRIGERANT R-410A HIGH EFFICIENY UNITS
0125HE 0139HE 0142HE 0156HE 0175HE 0200HE 0230HE
NOMINAL RATINGS 3

TONS 116.0 126.1 129.5 144.5 172.5 194.5 220.6

KW INPUT 122.0 149.6 138.9 153.0 194.2 210.9 240.0
EER 10.3 10.1 10.2 10.2 9.8 10.1 10.2
IPLV 15.7 16.0 15.9 15.5 15.6 16.1 15.6
GENERAL UNIT DATA
Length 187.7 187.7 187.7 232.7 232.7 274.4 274.4
Width 88.0 88.0 88 88 88 88.3 88.3
Height 94.2 94.2 94.2 94.2 94.2 94.2 94.2
Number Of Refrigerant Circuits 2 2 2 2 2 2 2
REFRIGERANT CHARGE, OPERATING
R-410A, CKT1/CKT2, LB 75/71 76/76 83/73 90/82 94/92 95/95 100/100
Oil Charge, CKT1/CKT2, Gallons 3.33/3.33 4.20/2.80 4.99/2.76 4.99/3.33 4.99/4.99 4.2/4.2 4.99/4.99
Shipping Weight 5869 6380 6259 7344 7882 9205 9690
Operating Weight 5942 6488 6369 7428 8001 9333 9821
COMPRESSORS, SCROLL TYPE
Compressors Per Circuit 2/2 3/2 3/3 3/2 3/3 3/3 3/3
Compressors Per Unit 4 5 6 5 6 6 6
NOMINAL TONS PER COMPRESSOR
Circuit 1 32 25 32 32 32 35 40
Circuit 2 32 32 15 32 32 35 40
CONDENSER
Total Face Area Ft2 213.8 213.8 213.8 267.2 267.2 320 320
Number Of Rows 1 1 1 1 1 1 1
Fins Per Inch 20 20 20 20 20 20 20
CONDENSER FANS, LOW SOUND
Number Of Fans, CKT 1/CKT 2 4/4 4/4 5/3 6/4 5/5 6/6 6/6
Fan HP 2 2 2 2 2 2.0 2.0
Fan RPM 1160 1160 1160 1160 1160 1160 1160
Total Chiller CFM 124800 124800 124800 150000 150000 180000 180000
EVAPORATOR
Water Volume, Gallons 8.8 13.2 13.2 10.0 14.3 12.6 14.3
Maximum Water Side Pressure, PSIG 150 150 150 150 150 150 150
Maximum Refrigerant Side
450 450 450 450 450 450 450
Pressure, PSIG
Minimum Chiller Water Flow Rate, GPM 100 138 150 138 150 230 220
Maximum Chiller Water Flow Rate, GPM 400 525 625 525 625 625 625
Water Connections Size, Inches 4* 4* 4* 4* 4* 5 5

NOTES:
1. kW = Compressor Input Power.
2. EER = Chiller EER (includes power from compressors, fans, and the control panels 0.8 kW).
3. Rated in accordance with AHRI Standard 550/590 at an air on condenser temperature of 95°F and a leaving chilled water temperature of 44°F.
4. Additional rating information can be provided by your local Johnson Controls Sales Office.

52 JOHNSON CONTROLS
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SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 53
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ELECTRICAL DATA

Table 7 - MICROPANEL POWER SUPPLY

CONTROL OVER CURRENT PROTECTION,
UNIT VOLTAGE MCA
POWER SEE NOTE B NF DISC SW
UNIT NOTE A
MODELS W/O MIN MAX
VOLTAGE
CONTROL 115-1-60/50
15 A 10 A 15 A 30 A / 240 V
TRANS
-17 200-1-60 15 A 10 A 15 A 30 A / 240 V
-28 230-1-60 15 A 10 A 15 A 30 A / 240 V
MODELS W/
-40 380-1-60 15 A 10 A 15 A 30 A / 480 V
CONTROL
-46 460-1-60 15 A 10 A 15 A 30 A / 480 V
TRANS
-50 380/415-1-60 15 A 10 A 15 A 30 A / 415 V
-58 575-1-60 15 A 10 A 15 A 30 A / 600 V

A. Minimum #14 AWG, 75°C, Copper Recommended

B. Minimum and Maximum Over Current Protection, Dual Element Fuse or Circuit Breaker

It is possible that multiple sources of The unit evaporator heater uses 120 VAC.
power can be supplying the unit power Disconnecting 120 VAC power from the
panel. To prevent serious injury or death, unit, at or below freezing temperatures,
the technician should verify that NO can result in damage to the evaporator
LETHAL VOLTAGES are present inside and unit as a result of the chilled liquid
the panel AFTER disconnecting power, freezing.
Before working on equipment.

Voltage Limitations
The following voltage limitations are absolute and
operation beyond these limitations may cause serious
damage to the compressor.

Table 8 - VOLTAGE RANGE

VOLTAGE RANGE
VOLTAGE CODE UNIT POWER MIN. MAX.
200/3/60 180 220
-17
208/3/60 187 228
-28 230-3-60 207 253
-40 380-3-60 355 415
-46 460-3-60 414 506
-50 380/415-3-50 360 440
-58 575-3-60 517 633

COMPRESSOR HEATERS
Compressor heaters are standard. ZP180 compres- crankcase heaters must be energized for 18 hours to 24
sors utilize 70W heaters; ZP235, compressor use 120 hours before restarting a compressor. This will assure
W heaters and ZP285, ZP385, and ZP485 utilize 150 that liquid slugging and oil dilution does not damage
W heaters. If power is OFF more than two hours, the the compressors on start.

54 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

Table 9 - PUMP ELECTRICAL DATA 60 HZ

PUMP ELECTRICAL DATA
PUMP HORSE
RPM 208 - 3 - 60 HZ 230 - 3 - 60 HZ 380 - 3 - 60 HZ 460 - 3 - 60 HZ 575 - 3 - 60 HZ
MODEL POWER
FLA LRA FLA LRA FLA LRA FLA LRA FLA LRA
A 5 3600 N/A N/A 12.0 92.0 7.1 55.5 6.0 46.0 4.8 36.8
B 7.5 3600 N/A N/A 17.6 126.0 10.6 78.0 8.8 63.0 7.0 50.4
C 10 3600 N/A N/A 23.6 162.0 14.3 102.0 14.0 81.0 9.4 64.8
D 15 3600 N/A N/A 35.0 232.0 20.9 143.0 17.5 116.0 14.0 92.8
E 5 1800 N/A N/A 13.0 92.0 7.9 55.5 6.5 46.0 5.2 36.8
F 15 3600 N/A N/A 35.0 232.0 20.9 143.0 17.5 116.0 14.0 92.8
G 7.5 3600 N/A N/A 17.6 126.0 10.6 78.0 8.8 63.0 7.0 50.4
H 10 3600 N/A N/A 23.6 162.0 14.3 102.0 14.0 81.0 9.4 64.8
I 15 3600 N/A N/A 35.0 232.0 20.9 143.0 17.5 116.0 14.0 92.8
J 5 1800 N/A N/A 13.0 92.0 7.9 55.5 6.5 46.0 5.2 36.8
K 15 3600 N/A N/A 35.0 232.0 20.9 143.0 17.5 116.0 14.0 92.8
L 20 3600 N/A N/A 45.0 290.0 28.7 190.0 22.5 145.0 18.0 116.0
M 3 1800 N/A N/A 8.0 64.0 4.7 38.0 4.0 32.0 3.2 25.6
N 7.5 3600 N/A N/A 17.6 126.0 10.6 78.0 8.8 63.0 7.0 50.4
O 10 3600 N/A N/A 23.6 162.0 14.3 102.0 14.0 81.0 9.4 64.8
P 15 3600 N/A N/A 35.0 232.0 20.9 143.0 17.5 116.0 14.0 92.8 5
R 5 1800 N/A N/A 13.0 92.0 7.9 55.5 6.5 46.0 5.2 36.8
S 10 1800 N/A N/A 24.0 162.0 15.1 102.0 12.0 81.0 9.6 64.8
T 15 1800 N/A N/A 36.4 232.0 22.0 143.0 18.2 116.0 14.6 92.8
U 7.5 1800 N/A N/A 18.4 126.0 11.1 78.0 9.2 63.0 7.4 50.4
V 20 3600 N/A N/A 45.0 290.0 28.7 190.0 22.5 145.0 18.0 116.0

NOTE:
Reference PIN 59 for Pump Model.
Use this table along with Table 11 - Electrical Data Without Pumps on page 56 to determine electrical data of the unit plus the pump.

Table 10 - TRANSFORMER LOAD

VA
VOLT 2000 3000
208 9.6 14.4
230 8.7 13.0
380 5.3 7.9
460 4.3 6.5
575 3.5 5.2

JOHNSON CONTROLS 55
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

Table 11 - ELECTRICAL DATA WITHOUT PUMPS

MIN DUAL MAX DUAL
CHILLER VOLTAGE MIN CKT. MIN N/F ELEM ELEM
MODEL CODE AMPS DISC SW FUSE & FUSE
MIN CB MAX CB
208 172 250 200 200
230 171 250 200 200
41 380 119 150 125 125
460 92 150 100 100
575 66 100 70 70
208 248 400 250 250
230 248 400 250 250
48 380 137 200 150 150
460 114 150 125 125
575 96 150 110 110
208 276 400 300 300
230 275 400 300 300
58 380 149 200 175 175
460 130 200 150 150
575 103 150 110 110
208 306 400 350 350
230 305 400 350 350
65 380 170 250 200 200
460 150 200 175 175
575 112 150 125 125
208 334 400 350 350
230 333 400 350 350
70 380 191 250 225 225
460 169 200 175 175
575 120 150 125 125
208 363 600 400 400
230 363 600 400 400
80 380 201 250 225 225
460 177 250 200 200
575 134 200 150 150
208 363 400 400 400
230 363 400 400 400
81 380 201 250 225 225
460 177 250 200 200
575 134 200 150 150
208 363 600 400 400
230 363 600 400 400
82 380 201 250 225 225
460 177 250 200 200
575 134 200 150 150
208 391 600 450 450
230 390 600 450 450
89 380 211 250 250 250
460 184 250 200 200
575 146 200 150 150

56 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 11 - ELECTRICAL DATA WITHOUT PUMPS (CONT’D)

SYSTEM # 1 SYSTEM # 2
COMPR 1 COMPR 2 COMPR 3 STD FLOW FANS COMPR 1 COMPR 2 COMPR 3 STD FLOW FANS
RLA LRA RLA LRA RLA LRA QTY FLA LRA RLA LRA RLA LRA RLA LRA QTY FLA LRA
33.3 239 33.3 239 2 7.6 44 33.3 239 33.3 239 2 7.6 44
33.3 239 33.3 239 2 7.4 37 33.3 239 33.3 239 2 7.4 37
23.7 145 23.7 145 2 4.5 23.1 23.7 145 23.7 145 2 4.5 23.1
17.9 125 17.9 125 2 4 19 17.9 125 17.9 125 2 4 19
12.8 80 12.8 80 2 2.9 15.3 12.8 80 12.8 80 2 2.9 15.3
51.3 300 51.3 300 2 7.6 44 51.3 300 51.3 300 2 7.6 44
51.3 300 51.3 300 2 7.4 37 51.3 300 51.3 300 2 7.4 37
28 139 28 139 2 4.5 23.1 28 139 28 139 2 4.5 23.1
23.1 150 23.1 150 2 4 19 23.1 150 23.1 150 2 4 19
19.9 109 19.9 109 2 2.9 15.3 19.9 109 19.9 109 2 2.9 15.3
57.7 284 57.7 284 2 7.6 44 57.7 284 57.7 284 2 7.6 44
57.7 330 57.7 330 2 7.4 37 57.7 330 57.7 330 2 7.4 37
30.9 192 30.9 192 2 4.5 23.1 30.9 192 30.9 192 2 4.5 23.1
26.9 180 26.9 180 2 4 19 26.9 180 26.9 180 2 4 19
21.5 132 21.5 132 2 2.9 15.3 21.5 132 21.5 132 2 2.9 15.3
57.7 284 57.7 249 2 7.6 44 57.7 284 57.7 249 2 7.6 44
57.7 330 57.7 288 2 7.4 37 57.7 330 57.7 288 2 7.4 37
30.9 192 30.9 139 2 4.5 23.1 30.9 192 30.9 139 2 4.5 23.1 5
26.9 180 26.9 180 2 4 19 26.9 180 26.9 180 2 4 19
21.5 132 21.5 132 2 2.9 15.3 21.5 132 21.5 132 2 2.9 15.3
48.5 249 48.5 249 48.5 249 2 7.6 44 48.5 249 48.5 249 48.5 249 2 7.6 44
48.5 249 48.5 249 48.5 249 2 7.4 37 48.5 249 48.5 249 48.5 249 2 7.4 37
27.6 159 27.6 159 27.6 159 2 4.5 23.1 27.6 159 27.6 159 27.6 159 2 4.5 23.1
24.4 145 24.4 145 24.4 145 2 4 19 24.4 145 24.4 145 24.4 145 2 4 19
17.4 109 17.4 109 17.4 109 2 2.9 15.3 17.4 109 17.4 109 17.4 109 2 2.9 15.3
48.5 249 48.5 249 48.5 249 2 7.6 44 48.5 249 48.5 249 48.5 249 2 7.6 44
48.5 288 48.5 288 48.5 288 2 7.4 37 48.5 288 48.5 288 48.5 288 2 7.4 37
27.6 159 27.6 159 27.6 159 2 4.5 23.1 27.6 159 27.6 159 27.6 159 2 4.5 23.1
24.4 145 24.4 145 24.4 145 2 4 19 24.4 145 24.4 145 24.4 145 2 4 19
17.4 109 17.4 109 17.4 109 2 2.9 15.3 17.4 109 17.4 109 17.4 109 2 2.9 15.3
48.5 249 48.5 249 48.5 249 2 7.6 44 48.5 249 48.5 249 48.5 249 2 7.6 44
48.5 288 48.5 288 48.5 288 2 7.4 37 48.5 288 48.5 288 48.5 288 2 7.4 37
27.6 159 27.6 159 27.6 159 2 4.5 23.1 27.6 159 27.6 159 27.6 159 2 4.5 23.1
24.4 145 24.4 145 24.4 145 2 4 19 24.4 145 24.4 145 24.4 145 2 4 19
17.4 109 17.4 109 17.4 109 2 2.9 15.3 17.4 109 17.4 109 17.4 109 2 2.9 15.3
57.7 284 57.7 284 57.7 284 2 7.6 44 48.5 257 48.5 257 48.5 257 2 7.6 44
57.7 330 57.7 330 57.7 330 2 7.4 37 48.5 288 48.5 288 48.5 288 2 7.4 37
30.9 192 30.9 192 30.9 192 2 4.5 23.1 27.6 172 27.6 172 27.6 172 2 4.5 23.1
26.9 180 26.9 180 26.9 180 2 4 19 24.4 145 24.4 145 24.4 145 2 4 19
21.5 132 21.5 132 21.5 132 2 2.9 15.3 17.4 114 17.4 114 17.4 114 2 2.9 15.3
57.7 284 57.7 284 57.7 284 2 7.6 44 57.7 284 57.7 284 57.7 284 2 7.6 44
57.7 330 57.7 330 57.7 330 2 7.4 37 57.7 330 57.7 330 57.7 330 2 7.4 37
30.9 192 30.9 192 30.9 192 2 4.5 23.1 30.9 192 30.9 192 30.9 192 2 4.5 23.1
26.9 180 26.9 180 26.9 180 2 4 19 26.9 180 26.9 180 26.9 180 2 4 19
21.5 132 21.5 132 21.5 132 2 2.9 15.3 21.5 132 21.5 132 21.5 132 2 2.9 15.3

JOHNSON CONTROLS 57
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 11 - ELECTRICAL DATA WITHOUT PUMPS (CONT’D)

MIN DUAL MAX DUAL
CHILLER VOLTAGE MIN CKT. MIN N/F ELEM ELEM
MODEL CODE AMPS DISC SW FUSE & FUSE
MIN CB MAX CB
208 406 600 450 450
230 405 600 450 450
92 380 220 400 250 250
460 192 250 225 225
575 152 200 150 150
208 450 600 500 500
230 449 600 500 500
100 380 260 400 300 300
460 220 400 250 250
575 175 250 200 200
208 458 600 500 500
230 456 600 500 500
101 380 264 400 300 300
460 224 400 250 250
575 178 250 200 200
208 497 800 600 600
230 496 800 600 600
120 380 300 400 350 350
460 250 400 300 300
575 198 250 225 225
208 512 800 600 600
230 511 800 600 600
125 380 309 400 350 350
460 258 400 300 300
575 204 250 225 225
208 579 800 600 600
230 577 800 600 600
136 380 338 600 400 400
460 285 400 300 300
575 226 400 250 250
208 555 800 600 600
230 553 800 600 600
139 380 329 400 350 350
460 274 400 300 300
575 217 400 250 250
208 579 800 600 600
230 577 800 600 600
142 380 338 600 400 400
460 285 400 300 300
575 226 400 250 250
208 618 800 700 700
230 617 800 700 700
155 380 374 600 400 400
460 311 400 350 350
575 246 400 300 300

58 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 11 - ELECTRICAL DATA WITHOUT PUMPS (CONT’D)

SYSTEM # 1 SYSTEM # 2
COMPR 1 COMPR 2 COMPR 3 STD FLOW FANS COMPR 1 COMPR 2 COMPR 3 STD FLOW FANS
RLA LRA RLA LRA RLA LRA QTY FLA LRA RLA LRA RLA LRA RLA LRA QTY FLA LRA
57.7 284 57.7 284 57.7 284 3 7.6 44 57.7 284 57.7 284 57.7 284 3 7.6 44
57.7 330 57.7 330 57.7 330 3 7.4 37 57.7 330 57.7 330 57.7 330 3 7.4 37
30.9 192 30.9 192 30.9 192 3 4.5 23.1 30.9 192 30.9 192 30.9 192 3 4.5 23.1
26.9 180 26.9 180 26.9 180 3 4 19 26.9 180 26.9 180 26.9 180 3 4 19
21.5 132 21.5 132 21.5 132 3 2.9 15.3 21.5 132 21.5 132 21.5 132 3 2.9 15.3
106.2 523 106.2 523 3 7.6 44 106.2 523 106.2 523 3 7.6 44
106.2 578 106.2 578 3 7.4 37 106.2 578 106.2 578 3 7.4 37
64.3 355 64.3 355 3 4.5 23.1 64.3 355 64.3 355 3 4.5 23.1
53.1 290 53.1 290 3 4 19 53.1 290 53.1 290 3 4 19
42.5 255 42.5 255 3 2.9 15.3 42.5 255 42.5 255 3 2.9 15.3
57.7 284 57.7 284 57.7 284 2 7.6 44 106.2 523 106.2 523 4 7.6 44
57.7 330 57.7 330 57.7 330 2 7.4 37 106.2 578 106.2 578 4 7.4 37
30.9 192 30.9 192 30.9 192 2 4.5 23.1 64.3 355 64.3 355 4 4.5 23.1
26.9 180 26.9 180 26.9 180 2 4 19 53.1 290 53.1 290 4 4 19
21.5 132 21.5 132 21.5 132 2 2.9 15.3 42.5 255 42.5 255 4 2.9 15.3
106.2 523 106.2 523 3 7.6 44 106.2 523 106.2 523 3 7.6 44
106.2 578 106.2 578 3 7.4 37 106.2 578 106.2 578 3 7.4 37
64.3 355 64.3 355 3 4.5 23.1 64.3 355 64.3 355 3 4.5 23.1 5
53.1 290 53.1 290 3 4 19 53.1 290 53.1 290 3 4 19
42.5 255 42.5 255 3 2.9 15.3 42.5 255 42.5 255 3 2.9 15.3
106.2 523 106.2 523 4 7.6 44 106.2 523 106.2 523 4 7.6 44
106.2 578 106.2 578 4 7.4 37 106.2 578 106.2 578 4 7.4 37
64.3 355 64.3 355 4 4.5 23.1 64.3 355 64.3 355 4 4.5 23.1
53.1 290 53.1 290 4 4 19 53.1 290 53.1 290 4 4 19
42.5 255 42.5 255 4 2.9 15.3 42.5 255 42.5 255 4 2.9 15.3
57.7 284 57.7 284 57.7 284 4 7.6 44 57.7 284 57.7 284 57.7 284 4 7.6 44
57.7 330 57.7 330 57.7 330 4 7.4 37 57.7 330 57.7 330 57.7 330 4 7.4 37
30.9 192 30.9 192 30.9 192 4 4.5 23.1 30.9 192 30.9 192 30.9 192 4 4.5 23.1
26.9 180 26.9 180 26.9 180 4 4 19 26.9 180 26.9 180 26.9 180 4 4 19
21.5 132 21.5 132 21.5 132 4 2.9 15.3 21.5 132 21.5 132 21.5 132 4 2.9 15.3
85.1 394 85.1 394 85.1 394 4 7.6 44 106.2 523 106.2 523 4 7.6 44
85.1 436 85.1 436 85.1 436 4 7.4 37 106.2 578 106.2 578 4 7.4 37
49.3 252 49.3 252 49.3 252 4 4.5 23.1 64.3 355 64.3 355 4 4.5 23.1
40.7 212 40.7 212 40.7 212 4 4 19 53.1 290 53.1 290 4 4 19
32.6 168 32.6 168 32.6 168 4 2.9 15.3 42.5 255 42.5 255 4 2.9 15.3
57.7 284 57.7 284 57.7 284 3 7.6 44 57.7 284 57.7 284 57.7 284 3 7.6 44
57.7 330 57.7 330 57.7 330 3 7.4 37 57.7 330 57.7 330 57.7 330 3 7.4 37
30.9 192 30.9 192 30.9 192 3 4.5 23.1 30.9 192 30.9 192 30.9 192 3 4.5 23.1
26.9 180 26.9 180 26.9 180 3 4 19 26.9 180 26.9 180 26.9 180 3 4 19
21.5 132 21.5 132 21.5 132 3 2.9 15.3 21.5 132 21.5 132 21.5 132 3 2.9 15.3
106.2 523 106.2 523 4 7.6 44 106.2 523 106.2 523 4 7.6 44
106.2 578 106.2 578 4 7.4 37 106.2 578 106.2 578 4 7.4 37
64.3 355 64.3 355 4 4.5 23.1 64.3 355 64.3 355 4 4.5 23.1
53.1 290 53.1 290 4 4 19 53.1 290 53.1 290 4 4 19
42.5 255 42.5 255 4 2.9 15.3 42.5 255 42.5 255 4 2.9 15.3

JOHNSON CONTROLS 59
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 11 - ELECTRICAL DATA WITHOUT PUMPS (CONT’D)

MIN DUAL MAX DUAL
CHILLER VOLTAGE MIN CKT. MIN N/F ELEM ELEM
MODEL CODE AMPS DISC SW FUSE & FUSE
MIN CB MAX CB
208 634 800 700 700
230 632 800 700 700
156 380 383 600 400 400
460 319 400 350 350
575 252 400 300 300
208 740 1000 800 800
230 738 1000 800 800
170 380 447 600 500 500
460 372 600 400 400
575 295 400 350 350
208 740 1000 800 800
230 738 1000 800 800
175 380 447 600 500 500
460 372 600 400 400
575 295 400 350 350
208 734 1000 800 800
230 731 1000 800 800
200 380 443 600 500 500
460 369 600 400 400
575 292 400 300 300
208 959 1200 1000 1000
230 956 1200 1000 1000
230 380 599 600 600 600
460 504 600 600 600
575 359 600 400 400

60 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 11 - ELECTRICAL DATA WITHOUT PUMPS (CONT’D)

SYSTEM # 1 SYSTEM # 2
COMPR 1 COMPR 2 COMPR 3 STD FLOW FANS COMPR 1 COMPR 2 COMPR 3 STD FLOW FANS
RLA LRA RLA LRA RLA LRA QTY FLA LRA RLA LRA RLA LRA RLA LRA QTY FLA LRA
106.2 523 106.2 523 4 7.6 44 106.2 523 106.2 523 4 7.6 44
106.2 578 106.2 578 4 7.4 37 106.2 578 106.2 578 4 7.4 37
64.3 355 64.3 355 4 4.5 23.1 64.3 355 64.3 355 4 4.5 23.1
53.1 290 53.1 290 4 4 19 53.1 290 53.1 290 4 4 19
42.5 255 42.5 255 4 2.9 15.3 42.5 255 42.5 255 4 2.9 15.3
106.2 523 106.2 523 106.2 523 5 7.6 44 106.2 523 106.2 523 106.2 523 5 7.6 44
106.2 578 106.2 578 106.2 578 5 7.4 37 106.2 578 106.2 578 106.2 578 5 7.4 37
64.3 355 64.3 355 64.3 355 5 4.5 23.1 64.3 355 64.3 355 64.3 355 5 4.5 23.1
53.1 290 53.1 290 53.1 290 5 4 19 53.1 290 53.1 290 53.1 290 5 4 19
42.5 255 42.5 255 42.5 255 5 2.9 15.3 42.5 255 42.5 255 42.5 255 5 2.9 15.3
106.2 523 106.2 523 106.2 523 5 7.6 44 106.2 523 106.2 523 106.2 523 5 7.6 44
106.2 578 106.2 578 106.2 578 5 7.4 37 106.2 578 106.2 578 106.2 578 5 7.4 37
64.3 355 64.3 355 64.3 355 5 4.5 23.1 64.3 355 64.3 355 64.3 355 5 4.5 23.1
53.1 290 53.1 290 53.1 290 5 4 19 53.1 290 53.1 290 53.1 290 5 4 19
42.5 255 42.5 255 42.5 255 5 2.9 15.3 42.5 255 42.5 255 42.5 255 5 2.9 15.3
102.8 574 102.8 574 102.8 574 6 7.6 44 102.8 574 102.8 574 102.8 574 6 7.6 44
102.8 635 102.8 635 102.8 635 6 7.4 37 102.8 635 102.8 635 102.8 635 6 7.4 37
62.2 355 62.2 355 62.2 355 6 4.5 23.1 62.2 355 62.2 355 62.2 355 6 4.5 23.1 5
51.4 280 51.4 280 51.4 280 6 4 19 51.4 280 51.4 280 51.4 280 6 4 19
41.1 225 41.1 225 41.1 225 6 2.9 15.3 41.1 225 41.1 225 41.1 225 6 2.9 15.3
138.8 943 138.8 943 138.8 943 6 7.6 44 138.8 943 138.8 943 138.8 943 6 7.6 44
138.8 943 138.8 943 138.8 943 6 7.4 37 138.8 943 138.8 943 138.8 943 6 7.4 37
87.2 564 87.2 564 87.2 564 6 4.5 23.1 87.2 564 87.2 564 87.2 564 6 4.5 23.1
73 408 73 408 73 408 6 4 19 73 408 73 408 73 408 6 4 19
51.9 375 51.9 375 51.9 375 6 2.9 15.3 51.9 375 51.9 375 51.9 375 6 2.9 15.3
NOTE:
• Reference PIN 59 for Pump Model.
• Use this table along with Table 9 - Pump Electrical Data 60 Hz on page 55 to determine electrical data of the unit plus the pump.
• Does not include Control Transformer.

JOHNSON CONTROLS 61
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

Table 12 - WIRING LUGS

1 PT SUPPLY MOLDED CASE SWITCH MOLDED CASE CIRCUIT
T. BLOCK 1 PT. SUPPLY BREAKER 1 PT. SUPPLY
CHILLER
VOLTS
MODEL
INSTALLED INSTALLED ALTERNATE INSTALLED ALTERNATE
LUG LUG LUG LUG LUG
208 (1) # 6 - 500 - - (1) 4 - 300 -
230 (1) # 6 - 500 - - (1) 4 - 300 -
YLAA0041 380 (1) # 6 - 500 - - (1) 4 - 300 -
460 (1) # 6 - 500 - - (1) 4 - 300 -
575 (1) # 6 - 500 - - (1) 4 - 300 -
208 (1) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
230 (1) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
YLAA0048 380 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
460 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
208 (1) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
230 (1) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
YLAA0058 380 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
460 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
YLAA0065 380 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 6 - 350 -
460 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
YLAA0070 380 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
460 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
YLAA0080 380 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (1) 6 - 350 -
460 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -

62 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 12 - WIRING LUGS (CONT’D)

1 PT SUPPLY MOLDED CASE SWITCH MOLDED CASE CIRCUIT
T. BLOCK 1 PT. SUPPLY BREAKER 1 PT. SUPPLY
CHILLER
VOLTS
MODEL
INSTALLED INSTALLED ALTERNATE INSTALLED ALTERNATE
LUG LUG LUG LUG LUG
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (3) 2/0 - 400 (2) 250 - 500
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (3) 2/0 - 400 (2) 250 - 500
YLAA0081 380 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (2) 3/0 - 250 (1) 250 - 500
460 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (3) 2/0 - 400 (2) 250 - 500
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (3) 2/0 - 400 (2) 250 - 500
YLAA0082 380 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (2) 3/0 - 250 (1) 250 - 500
460 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 6 - 350 (1) 6 - 350
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 (1) 6 - 350
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
YLAA0089 380 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
460 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
5
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
YLAA0092 380 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
460 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 6 - 350 -
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
230 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
YLAA0100
380 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
YLAA0101
460 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
575 (1) # 6 - 500 (1) 6 - 350 - (1) 6 - 350 -

JOHNSON CONTROLS 63
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TABLE 12 - WIRING LUGS (CONT’D)

1 PT SUPPLY MOLDED CASE SWITCH MOLDED CASE CIRCUIT
T. BLOCK 1 PT. SUPPLY BREAKER 1 PT. SUPPLY
CHILLER
VOLTS
MODEL
INSTALLED INSTALLED ALTERNATE INSTALLED ALTERNATE
LUG LUG LUG LUG LUG
208 (2) # 6 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500
YLAA0120 230 (2) # 6 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500
YLAA0130 380 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
YLAA0125 400/460 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
575 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
208 (2) # 6 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500
230 (2) # 6 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500
YLAA0135
380 (1) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
YLAA0141
400/460 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250
575 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250
208 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
230
YLAA0136
380 (2) # 6 - 500 (3) 2/0 - 400 (2) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
YLAA0142
400/460 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250
575 (1) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250
YLAA0139 208 (3) 2/0 - 400 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500
YLAA0150 230 (3) 2/0 - 400 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500
YLAA0155 380 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
YLAA0158 460 (2) # 6 - 500 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250
YLAA0156 575 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
208 (4) 4/0 - 500 (4) 4/0 - 500 - (3) 2/0 - 400 (2) 250 - 500
YLAA0170 230 (4) 4/0 - 500 (4) 4/0 - 500 - (3) 2/0 - 400 (2) 250 - 500
YLAA0175 380 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
YLAA0200 460 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 3/0 - 250 (1) 250 - 500
575 (1) # 6 - 500 (2) 3/0 - 250 (1) 250 - 500 (2) 3/0 - 250 (1) 250 - 500
208 (4) 4/0 - 500 (4) 4/0 - 500 - (4) 4/0 - 500 -
230 (4) 4/0 - 500 (4) 4/0 - 500 - (4) 4/0 - 500 -
YLAA0230
460 (2) # 6 - 500 (2) 250 - 500 (3) 2/0 - 400 (2) 250 - 500 (3) 2/0 - 400
575 (2) # 6 - 500 - - (2) 3/0 - 250 (1) 250 - 500

64 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ELECTRICAL NOTES

NOTES the rated load amps for all other loads included in
1. Minimum Circuit Ampacity (MCA) is based on the circuit. Otherwise, HACR‑type circuit breakers
125% of the rated load amps for the largest mo- must be used. Maximum HACR circuit breaker rat-
tor plus 100% of the rated load amps for all other ing is based on 225% of the rated load amps for the
loads included in the circuit, per NEC Article largest motor plus 100% of the rated load amps for
430‑24. If the optional Factory Mounted Control all other loads included in the circuit.
Transformer is provided, add the following MCA
6. The “INCOMING WIRE RANGE” is the mini-
values to the electrical tables for the system pro-
mum and maximum wire size that can be ac-
viding power to the transformer: ‑17, add 2.5 A;
commodated by the unit wiring lugs. The (2)
‑28, add 2.3 A; ‑40, add 1.5 A, ‑46, add 1.3 A; ‑58,
preceding the wire range indicates the number of
add 1 A.
termination points available per phase of the wire
2. The minimum recommended disconnect switch is range specified. Actual wire size and number of
based on 115% of the rated load amps for all loads wires per phase must be determined based on the
included in the circuit, per NEC Article 440. National Electrical Code, using copper connec-
tors only. Field wiring must also comply with lo-
3. Minimum fuse size is based upon 150% of the rat-
cal codes.
ed load amps for the largest motor plus 100% of the
rated load amps for all other loads included in the 7. A ground lug is provided for each compressor sys-
circuit to avoid nuisance trips at start‑up due to lock tem to accommodate a field grounding conductor
rotor amps. It is not recommended in applications per NEC Table 250‑95. A control circuit ground- 5
where brown outs, frequent starting and stopping ing lug is also supplied.
of the unit, and/or operation at ambient tempera-
8. The supplied disconnect is a “Disconnecting
tures in excess of 95ºF (35ºC) is anticipated.
Means” as defined in the NEC 100, and is intend-
4. Maximum fuse size is based upon 225% of the ed for isolating the unit for the available power
rated load amps for the largest motor plus 100% supply to perform maintenance and troubleshoot-
of the rated load amps for all other loads included ing. This disconnect is not intended to be a Load
in the circuit, per NEC Article 440-22. Break Device.
5. Circuit breakers must be UL listed and CSA certi- 9. Field Wiring by others which complies to the Na-
fied and maximum size is based on 225% of the tional Electrical Code and Local Codes.
rated load amps for the largest motor plus 100% of

LEGEND VOLTAGE CODE

ACR-LINE ACROSS THE LINE START -17 = 200-208-3-60
C.B. CIRCUIT BREAKER -28 = 230-3-60
D.E. DUAL ELEMENT FUSE -40 = 380-3-60
-46 = 460-3-60
DISC SW DISCONNECT SWITCH
-50 = 380/415-3-50
FACT MOUNT CB FACTORY MOUNTED CIRCUIT BREAKER
-58 = 575-3-60
FLA FULL LOAD AMPS
HZ HERTZ
MAX MAXIMUM
MCA MINIMUM CIRCUIT AMPACITY
MIN MINIMUM
MIN NF MINIMUM NON FUSED
RLA RATED LOAD AMPS
S.P. WIRE SINGLE POINT WIRING
UNIT MTD SERV SW UNIT MOUNTED SERVICE (NON-FUSED DISCONNECT
LRA LOCKED ROTOR AMPS

JOHNSON CONTROLS 65
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ELECTRICAL NOTES AND LEGEND

035-21966-101 REV. Y

DESIGNATION DESCRIPTION DESIGNATION DESCRIPTION

ACC ACCESSORY - KT RELAY TIMER

- ADIS DISPLAY BOARD -M COMPRESSOR MOTOR

- AMB MICRO BOARD - MF MOTOR FAN

- AUX AUXILIARY SWITCH - MP MOTOR PUMP

- BAMB AMBIENT NU NOT USED

- BDAT DISCHARGE AIR TEMPERATURE PE PROTECTIVE EARTH

- BDP DISCHARGE PRESSURE PULSE WIDTH MODULATION TEMP

PWM
RESET or REMOTE UNLOAD 2nd STEP
- BECT ENTERING CHILLED TEMPERATURE
- QCB CIRCUIT BREAKER
LEAVING CHILLED TEMPERATURE
- BLCT MANUAL MOTOR STARTER
NOT FITTED ON REMOTE EVAP UNITS - QMMSC
COMPRESSOR
-BMP MOTOR PROTECTOR COMPRESSOR
- QMMSP MANUAL MOTOR STARTER PUMP
- BSP SUCTION PRESSURE
- QSD SWITCH DISCONNECT
BST SUCTION TEMPERATURE
R RESISTOR
- CPF CAPACITOR POWER FACTOR
RED RED
- ECH CRANKCASE HEATER
RP RUN PERMISSIVE
- EEH EVAPORATOR HEATER
RU REMOTE UNLOAD 1st STEP
- EEV ELECTRONIC EXPANSION VALVE
SCH THERMOSTAT CRANKCASE HEATER
- EEVC ELEC. EXPAN. VALVE CONTROLLER
SCR SCREEN
- EHRH HEAT RECOVERY HEATER
- SF FLOW SWITCH
- EPH PUMP HEATER
- SFE FLOW SWITCH ELECTRONIC
-ETXVH EXPANSION VALVE HEATER
- SKP KEYPAD
- ETH TRACE HEATER
- SOA SWITCH OFF AUTO
- EXT EXTERNAL TO CONTROL PANEL
- SZT ZONE THERMOSTAT
-F FUSE
-T TRANSFORMER
- FHP HIGH PRESSURE CUTOUT
- TC TRANSFORMER CURRENT
- FSC FAN SPEED CONTROLLER
TXV THERMAL EXPANSION VALVE
FAN SPEED INHIBIT TWO SPEED
- FSI - UBR BRIDGE RECTIFIER
FAN OPTION ONLY
GND GROUND - WHT WHITE

G/Y GREEN / YELLOW - XP PLUGS BETWEEN POW./MICRO. SECTION

J PLUG BOARD CONNECTOR - XTBC TERMINAL BLOCK CUSTOMER

-K CIRCUIT BOARD RELAY - XTBF TERMINAL BLOCK FACTORY

ELECTRONIC EXPANSION VALVE - XTBM TERMINAL BLOCK MOTOR FAN TRIP

- KEEV
CONTROL RELAY - YESV EVAPORATOR SOLENOID VALVE
FAN CONTACTOR LINE HOT GAS SOLENOID VALVE
- KF - YHGSV
(INCLUDING COIL SUPPRESSOR) (INCLUDING COIL SUPPRESSOR)
FAN CONTACTOR HIGH SPEED LIQUID LINE SOLENOID VALVE FIELD
- KFH
(INCLUDING COIL SUPPRESSOR) - YLLSV MOUNTED AND WIRED ON REMOTE
FAN CONTACTOR LOW SPEED EVAP. UNITS
- KFL
(INCLUDING COIL SUPPRESSOR) - ZCPR COMPRESSOR
- KFOL FAN OVERLOAD NB NOTE WELL {SEE NOTE}
- KFS RELAY FAN SPEED
WIRING AND ITEMS SHOWN THUS ARE
- KH HEATER RELAY STANDARD YORK ACCESSORIES
COMPRESSOR CONTACTOR WIRING AND ITEMS SHOWN THUS ARE
- KM
(INCLUDING COIL SUPPRESSOR) NOT SUPPLIED BY YORK
- KCR CONTROL RELAY ITEMS THUS ENCLOSED FORM A COMPO-
PUMP CONTACTOR PART NENTS OR SETS OF COMPONENTS
- KP
(INCLUDING COIL SUPPRESSOR)

66 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ELECTRICAL NOTES AND LEGEND (CONT’D)

GENERAL
a. This drawing is based on IEC symbols.
b. Field wiring to be in accordance with the relevant electrical code as well as all other applicable codes and specifications.
c. All sources of supply shown on this diagram to be taken from one main isolator, not shown or supplied by YORK.
Green and yellow wire is used for earth, multi-colored cable used for low voltage. Red wire used for AC Control, blue wire for
d.
neutral, black wire for AC and DC power. Orange wire should be used for interlock control wiring supplied by external source.
Legend designation depicts component abbreviations. Number prefix located, if applicable, on schematic circuit, refers to
e.
system thereon, E.G. = 1-FHP2 refers to high pressure cutout no 2 on system no 1.
All wiring to control section voltage free contacts requires a supply provided by the customer maximum voltage 240 volts.
The customer must take particular care when deriving the supplies for the voltage free terminals with regard to a common
point of isolation. Thus, these circuits when used must be fed via the common point of isolation. The voltage to these circuits
f.
is removed when the common point of isolation to the unit is opened. This common point of isolation is not supplied by
YORK. The YORK voltage free contacts are rated at 100 VA. All inductive devices {relays} switch by the YORK voltage free
contacts must have their coil suppressed using standard R/C suppressors.
g. Customer voltage free contacts connected to terminal 13 must be rated at 30 V 5 mA.
No controls {relays etc.} Should be mounted in any section of the control panel. Additionally, control wiring not connected
h. to the YORK control panel should not be run through the panel. If these precautions are not followed, electrical noise could
cause malfunctions or damage to the unit and its controls.
I. 120/14.3 - (Signal IN/OUT) i.e. 120 is wire # and 14.3 refers to SHT. 14 column 3.
NOTES
Refer to installation commissioning operation and maintenance manual for customer connections and customer connection
1
notes, non compliance to these instructions will invalidate unit warranty. 5
Wiring and components for compressor 3 only fitted when unit has 3 compressors on the system. 1-BMP3 is replaced by a
2
link across terminals 134 & 135. 2-BMP3 is replaced by a link across terminals 234 & 235.
3 -
4 Fitted on units with hot gas bypass option.
5 EMS option is wired as shown.
6 This wiring must be used for old display 031-0110-000.
7 Network connection point.
8 Printer port.
9 Remote emergency stop can be wired between terminal 1 and 5 after removing link.
10 Power factor correction accessory. Power factor correction fitted to each compressor contactor.
Not fitted on compressors with internal motor protection. For system 1 terminals 132 & 133, 133 & 134 and 134 & 135 are
11
linked. For system 2 terminals 232 & 233, 233 & 234 and 234 & 235 are linked.
12 Only fitted on systems with 3 or more fans.
13 Only fitted on systems with 4 fans.
14 Only fitted on systems with 5 fans.
15 Only fitted on systems with 6 fans.
16 Input switch disconnect (standard on CE units) or circuit breaker option replaces input terminal block.
17 Input switch disconnect & individual system circuit breaker option replaces input terminal block.
18 115 V control circuit requires a 115 V supply unless control circuit transformer -T2 & -F3 are fitted (standard on CE units).
Fitted on hydro kit option. On single pump -KP1, -QMMSP1 & -MP1 are fitted & wired as shown. On two pump hydro kits
19
-KP2, -QMMSP2 & -MP2 are also fitted and wired as shown. Insulated wire 1E under -F1 is connected to -F1.
20 Current measurement option wired as show.
21 Only fitted on systems with single speed fans.
22 Only fitted on systems with two speed fans.
23 Optional compressor manual motors starters (standard on CE units).
24 See sheet 3 of connection diagram for power input options.
25 Alternate connections shown for different two speed motor types.
26 Only fitted on systems with a maximum of 4 fans.
27 220/230V units require a separate fuse for units w/4 or more fans per system.
28 Low ambient kit -FSC for fan -MF1 is only fitted on systems with less than 4 fans.
29 Only fitted on YLAA0091, 0220, 0240, 0260 and YLUA0098, 0308
30 Only fitted on YLAA0090, 0091, 0240, 0260, 0285, 0300, 0390 & YLUA0095, 0098, 0148, 0298, 0308, 0468
31 Input dual point circuit breaker option replaces input terminal block.

JOHNSON CONTROLS 67
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ELECTRICAL NOTES AND LEGEND (CONT’D)

32 Field installed on remote evaporator units.
33 Fitted on units with single phase motors only.
34 Fitted on units with low ambient option only.
35 Only fitted on units with an acoustic kit.
36 Only fitted on heat recovery units.
37 Only fitted on condensing units.
38 Omitted on condensing units.
39 Fitted on units with low ambient option using single phase motors (50hz only).
40 Fitted on units with high airflow fan option only.
41 Part of E-link kit option.
42 Part of temp. sensor kit (on condensing units only).
43 -
When the compressors motor protection (-bmp) includes phase reversal the extra -bmp terminals and three wires are fitted
44 as shown in the compressor terminal box as detailed. Terminal L1, L2, L3 with wires colored red, black, white or alternatively
just wires colored (black) (brown) (blue)
45 Omitted on units with EEV
46 EEV option
47 Only fitted on units with plate evaporator
48 Only fitted on unit with shell and tube evaporator
49 Fitted on units with second hot gas bypass (2-YHGSV).
Units with plate evaporators - flow switch -SFE is fitted as standard on units that have 7 or more fans, ref 035-21589-107,
50 units with hydro kit or pipe extension kit. Units with shell and tube evaporator and hydro kit flow switch -SF is fitted. For all
other units - the customer must fit a field mounted flow switch, wired to terminals 13 and 14 on -XTBC1.
51 Only fitted on units with plate evaporator that have 7 or more fans
52 Not fitted on units with plate evaporator that have 7 or more fans
53 On systems with 3 fan contactors wire number in ( ) replaces wire number shown
54 Only fitted on systems with 4 or more fans
55 Only fitted on systems with 5 or more fans
Soft starter option details shown on sheet -120 of schematic replaces the standard drawing details for a unit with two com-
56
pressor on system 1
Soft starter option details shown on sheet -120 of schematic replaces the standard drawing details for a unit with three com-
57
pressor on system 1
Soft starter option details shown on sheet -120 of schematic replaces the standard drawing details for a unit with two com-
58
pressor on system 2
Soft starter option details shown on sheet -120 of schematic replaces the standard drawing details for a unit with three com-
59
pressor on system 2
60 On systems with 2 compressors wire number in ( ) replaces wire number shown
61 Not fitted on units with soft starter option
62 Soft starter option details shown on sheet -121 of schematic replaces the standard drawing with 2-compressors on system 1
63 Soft starter option details shown on sheet -121 of schematic replaces the standard drawing with 2-compressors on system 2
64 VSD single pump option with fuses, details shown on sheet -122 of schematic replaces the standard drawing -105.
65 VSD dual pump option with fuses, details shown on sheet -122 of schematic replaces the standard drawing -105.
66 VSD single pump option with circuit breakers, details shown on sheet -122 of schematic replaces the standard drawing -105.
67 VSD dual pump option with circuit breakers, details shown on sheet -122 of schematic replaces the standard drawing -105.
VSD fan option details shown on drawing -123
A System 1 with 3-fans - details shown on drawing - 123
B System 1 with 4-fans - details shown on drawing - 123
C System 1 with 5-fans - details shown on drawing - 123
68
D System 1 with 6-fans - details shown on drawing - 123
E System 2 with 3-fans - details shown on drawing - 123
F System 2 with 4-fans - details shown on drawing - 123
G System 3 with 5-fans - details shown on drawing - 123
69 Auxiliary switches for manual motor protectors
70 Auxiliary switches for manual motor protectors for 3 compressor units only
71 LON module option for smart chiller enclosure
72 Smart chiller assembly

68 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 69
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

WIRING DIAGRAMS
ELEMENTARY WIRING DIAGRAMS

200/230V-3-60HZ 200/230V-3-60HZ 200/230V-3-60HZ

460V-3-60HZ 460V-3-60HZ 460V-3-60HZ
NB1 575V-3-60HZ 575V-3-60HZ
575V-3-60HZ 380/415V-3-50/60HZ 380/415V-3-50/60HZ
380/415V-3-50/60HZ
NB1
-QSD 2 4 6
1 3 5 PE 1 3 5 PE
-XTBC
U V W PE PE
NB17 =1-QCB =2-QCB
1 3 5
L1
L2 NB1
2 4 6 2 4 6
L3
2L1 2L2 2L3

1L1/1.1
1L1/1.1
1L2/1.1
1L3/1.1

2L1/1.4
2L2/1.5
2L3/1.5

1L3/1.1

2L1/1.4

2L3/1.5
1L2/1.1

2L2/1.5
1 3 5 1 3 5 NB31
1L1 1L2 1L3 =1-QCB =2-QCB

2L1

2L3
2L2
1L3
1L1

1L2

2 4 6 2 4 6
1L1 2L1
1L2 NB20 2L2

2L1/1.4
2L2/1.5
1L2/1.1
1L3/1.1

2L3/1.5
1L1/1.1
1L3 2L3
=2-TC
=1-TC .11
.9 NB20

=1-QMMSC1 1 3 5 =1-QMMSC2 1 3 5 =1-QMMSC3 1 3 5 =2-QMMSC1 1 3 5 =2-QMMSC2 1 3 5

115V-1-50/60HZ
-F3 L1 N PE NB23 NB23
2 4 6 2 4 6 2 4 6 2 4 6 2 4 6
L 2 GND
90

91

-T2 1 3 5 1 3 5 1 3 5 1 3 5 1 3 5
-XCTB2
+EXT =1-KM1 NB56A =1-KM2 =1-KM3 NB57A =2-KM1 =2-KM2 NB58A
NB18 NB18 /2.5 2 4 6 /2.6 2 4 6 /2.6 2 4 6 /2.9 2 4 6 /2.10 2 4 6
115V
1 3 5 1 3 5 1 3 5 1 3 5 1 3 5
L

=1-SS1 =1-SS2 =1-SS3 =2-SS1 =2-SS2

NB63A
2 -XTBC2 -XTBC2 /21.2 /21.5 /21.7 /21.10
-XTBC2 L
2 4 6 2 4 6 2 4 6 2 4 6 2 4 6
GND NB62A
LK

GND
GND

GND

GND
103
104
105

106
107
108
100

200
201
202

203
204
205
NB9 2
101

NB2
5 L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE
102
GND

-XTBC2 5 NB10
5
L1 L2 L3 PE =1-M2 =1-M3 =2-M1 =2-M2
+EXT +EXT +EXT +EXT

-F2 -F1 =1-CPF =1-M1 -XTBC1

+EXT.ACC +EXT =1-SZT 13
2 13 NB1 13 13 13 13
3

-XP1 NB37
-XP2 2 2
13

3 2 -SOA -PWM -RU -RP -FSI

2
1

GND =2-SZT
POWER NB37
2

1
20 21 51 -XTBC1
BRN-POS

-ADIS
BRN-NEG

-SKP 50
-T1
40 24V
LED PWR

ROW1
ROW2
ROW3
LED GND

COL1
COL2
COL3
COL4
GND

12
GND

GND

20

50
21
51

41
R/W

DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
+5V

NC
NC
NC
NC

NC
NC
NC
NC
NC
NC

-GND
RS

40 - +
1 2 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6
BRN

-XTB4
1
1 2 3 NB6 1 2 3 4 5 6
1
-J14 J1 J2 -J13

-AMB
.7 -K1 -K2 -K3 -K4 -K5 -K6 -K7 -K8 -K9 -K10 -K11 -K12 -K13
-SFE 3
+EXT
3
NB50
BLU

41

LD29089a

1/2.1 What these numbers mean. Example:

1 = follow wire no.1
2. = is the drawing number on the bottom center of each page.
.1 = is the locator number across the top of the page.
At the top of the pages the numbers 1 to 11 go from left to right. Find drawing number 2 and in DWG. 1
column number 1 across the top of the page, locate wire number 1.
Figure 15 - ELEMENTARY WIRING DIAGRAM

70 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

035-21583-101
REV. R

25 -XP2 -XTBC2 29 -XP2 -XTBC2

200/230V-3-60HZ 25 29
460V-3-60HZ -XTBC2 12 14
NB1 575V-3-60HZ 23

23
380/415V-3-50/60HZ 13 13 13 23
/32.10
2 4 6 -XTB8 =1-KM3 =1-KM2 =1-KM1 =1-KCR
6 NB1 /2.1 NB1
/2.6 14 /2.6 14 14 /2.5 24
-QCB 2 4 6
-QSD NB1
-K13
PE .6 -XP2 -XP2
-XTBC2 30 -XTBC2
1 3 5
NB16 1 3 5 13 26 15 30
-XTB8
NB61
7
-XTBC2 27 -XP3 -XTBC2 31 -XP3 -XTBC2

24
24 10 27 12 31

13 13 13 23
=2-KM3 =2-KM2 =2-KM1 =2-KCR
1L1/1.1
1L2/1.1
1L3/1.1

2L1/1.4
2L2/1.5
2L3/1.5
/2.9 NB1 NB1
/2.10 14 /2.10 14 14 24 /2.1

-XP3 -XTBC2 32 -XP3 -XTBC2

11 28 13 32

-BDAT =1-BST =2-BST -R

+EXT.ACC +EXT.ACC +EXT.ACC
NB41
1 2

PORT 1
COM REF
2/1.1 2 -T5 WHT

PORT 2A RS485
=2-QMMSC3 1 3 5 NB42 COM SHD
24 TB5 BLK
NB37 VAC -
5/1.1 5 BLK RED
HOT +
-ELINK

SCR
R
+5V

+5V

+5V
SIG

SIG

SIG

2 4 6

=2-KM3
1 3 5
NB59A
-8 -9 -10
HOT COM
COM
5

RED
LK1

BLK
SCR
RED

SCR
RED

SCR
RED

J10
BLK

BLK

BLK

/2.10 2 4 6 J12
SHD
1 3 5 -AMB
=2-SS3
-
2 4 6 2 5 8 7 12 1 4 7 1 4 7 J8 4 3 2 1
+ -TB1
SC-EQ
GND
206
207
208

2 5 8 7 12 1 4 7 1 4 7
L1 L2 L3 PE
NB2 -J6 -J11 -J8 -J10 =1-UBR =2-UBR
NB20 NB20
=2-M3 -AMB
+EXT =1-TC =2-TC
.2 .4

13 13 NB32
-BECT -BLCT -BAMB
WHT

=1-BSP =1-BDP =2-BSP =2-BDP

-XP4 +EXT.ACC +EXT +EXT +EXT +EXT +EXT +EXT NB5
1
-XTBC1
1 1

2 =1-R =2-R A- A+
33 33 -SF
-SFE
2 2

+EXT 2
GND

GND
=1-KCR =2-KCR +EXT
SIG

SIG
/2.1 34 /2.1
34
B A C B A C B A C B A C
4 1 2 3 1 2 3 1 2 3 1 2 3
18

19

NB50
+5V

A-NEG
A-POS
SIG

+5V

+5V
SIG

SIG

GND

GND

GND
GND
+5V

SIG

+5V

+5V
SIG

SIG
+5V

SIG

-XP4 -XP4 4
-3 -1 -2 -4 -6
-7
BLK

2 3 -5
BRN 53
PNK 52

BRN 55
14 PNK 54
RED

RED
SCR

SCR
BLK

BLK

WHT

WHT

WHT

WHT

GND
SCR
RED

SCR
RED

SCR
RED

SCR
RED

SCR
RED
BLK

BLK

BLK

BLK

BLK

SIG
18 19 -XTBC1
14

8 10 9 2 5 8 1 4 7 3 6 9 1 5 9 10 2 6 7 11 4 12 1 5 9 10 2 6 7 11 4 12 6 11

8 10 9 2 5 8 1 4 7 3 6 9 1 5 9 10 2 6 7 11 4 12 1 5 9 10 2 6 7 11 4 12 6 11
-J6 -J7 -J9 -J11
-TB1 RS485 -TB3 RS232
-K14 -K15 -K16 -K17 -K18 -K19 -K20 -K21 -K22 -K23 -K24 1 2 3 4 1 2 3 4 5 6
485+

GND
SCR

RXD
485-
REF

RTS
CTS
TXD

+5V

NB7 NB8

LD29089b

DWG. 1

FIGURE 15 - ELEMENTARY WIRING DIAGRAM (CONT’D)

JOHNSON CONTROLS 71
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

-K10 -K15 -K9 -AMB -K1

/1.1
-K3
/1.2
/1.5 /1.7 /1.4
-XTB8 -XTB9 -XTB8 -XTB7
1 3 2 1 2 2 4

-XP2 -XP3 140

11 9
1
131

231

1/1.1

=1-XTBF =2-XTBF
131 231
3 3
=1-FHP =2-FHP -XP3
+EXT 3 +EXT 3 =1-FHP =2-FHP 14
+EXT +EXT
P> P>
P> P> -XP2
1 1 1 -XP2 -XP2
OR
1 1 4 6
=1-XTBF =2-XTBF 1
132 232
-XP1
=1-BMP1 =2-BMP1
+EXT M1(11) +EXT M1(11)
> >
.3 M2(14) .8 M2(14)
3/1.1

=1-XTBF
232
132

=1-XTBF =2-XTBF 1
133 233
3

=1-XTBF
=1-BMP2 =2-BMP2
+EXT M1(11) +EXT M1(11) 1

> > -XP3 15

.4 M2(14) .8 M2(14) 13
-KH 21 21 21
133

233

.3 14 =1-KM1 NB58B =1-KM2 NB57B =1-KM3

=1-XTBF =2-XTBF .5 .6 22 .6 22
22
140

134 234
NB2
134

234

125
124

126

119

121
=1-BMP3 =2-BMP3
+EXT M1(11) +EXT M1(11) =1-XTBF =1-XTBF =1-XTBF =1-XTBF
> > 1 124 125 126
.5 M2(14) .9 M2(14)

43 43
QMMSC QMMSC
-AUX1 44 -AUX4 44
149 =1-SCH1 =1-SCH2 =1-SCH3
43 NB69 43 +EXT +EXT +EXT
QMMSC QMMSC NB35
-AUX2 44 -AUX5 44
=1-XTBF =1-XTBF 149 > > >
43 43 149 149
NB70
QMMSC QMMSC
-AUX3 44 -AUX6 44 -XTB2
149 +EXT
NB32 NB11 NB11 NB11
=1-XTBF NB11 =2-XTBF
135 235 =1-BMP1 =1-BMP2 =1-BMP3 NB62B1
NB36 NB47 NB51 NB48 NB62B2
+EXT +EXT +EXT
135

235

T1(L) T1(L) T1(L)

A1 A1 -ETH1 -ETH2 -EEH A1 S1 S1 S1 A1 A1
GND

+EXT +EXT +EXT (1) (1) (1)

GND

=1-KCR A2 =2-KCR A2 -EHRH1 -EHRH2 -EEH1 -EEH2 -KH A2 (2) (2) (2) =1-KM1 A2 =1-KM2 A2
+EXT +EXT +EXT +EXT .1 S2 .1 S2 .1 S2
-XTB2 =1-ECH1 =1-ECH2 =1-ECH3
2 +EXT T2(N) +EXT T2 (N) +EXT T2 (N) +EXT

2 =1-XTBF =1-XTBF
2
2 =1-XTBF 2 2
2/1.2

NB2

NB56C

LD29243a
2/1.2 What these numbers mean. Example:
2 = follow wire no.2
1. = is the drawing number on the bottom center of each page.
.2 = is the locator number across the top of the page.
At the top of the pages the numbers 1 to 11 go from left to right. Find drawing number 1 and in DWG. 2
column number 2 across the top of the page, locate wire number 2.

Figure 16 - ELEMENTARY WIRING DIAGRAM

72 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

X Y

-K4 -K2 -K5

/1.3 /1.2 /1.3 -K17 -K19 -K20 -K18 -K21
/1.7 /1.8 /1.8 /1.8 /1.9
-XTB10
5 3 1 7 6 6 1 2 4 5 3 7

118 218

-XP3
-XP2 1
3
14 14
-XP2 -XP2 =1-KCR =2-KCR -XP3 -XP3 -XP3 -XP3
7 5 .1 13 .1 13 2 4 5 3

=2-XTBF
1
120 =2-XTBF 220
1

21 21 21
5

220
=2-KM1 NB58B =2-KM2 NB59B =2-KM3
123

.9 22 .10 22 .10
22
120

225
224

226
122

219

221

222
NB46 NB46
=1-XTBF =2-XTBF =2-XTBF =2-XTBF =2-XTBF =2-XTBF
120 220
120 1 224 225 226 220

223
=2-SCH1 =2-SCH2 =2-SCH3
+EXT +EXT +EXT

> > >

-XTBC2 NB11 -XTBC2

123 NB11 NB11 223
=2-BMP1 =2-BMP2 =2-BMP3
+EXT +EXT +EXT NB63B1 NB63B2
NB32 1 NB4 1 NB32 1 NB49 1
T1(L) T1(L) T1(L)
A1 S1 S1 S1 A1 A1 A1
GND
E GND
E (1) (1) (1) GND E GND E
=1-KM3 A2 1 =1-YLLSV =1-YHGSV (2) (2) (2) =2-KM1 A2 =2-KM2 A2 =2-KM3 A2 =2-YLLSV =2-YHGSV
2 .1 S2 .1 S2 .1 S2
+EXT 2 +EXT =2-ECH1 +EXT 2 +EXT 2
=2-ECH2 =2-ECH3
T2(N) +EXT T2 (N) +EXT T2(N)+EXT
-XTBC2 =2-XTBF =2-XTBF -XTBC2
2 2 2 2 035-21583-102
REV. Q

NB2

NB57C NB2 NB58C NB59C NB2

LD29243b

DWG. 2

FIGURE 16 - ELEMENTARY WIRING DIAGRAM (CONT’D)

JOHNSON CONTROLS 73
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

FAN WIRING
035-21583-125
Rev C
1L1
1L1/1.1
1L2
1L2/1.1
1L3
1L3/1.1

=1-F4

NB21 350
351
352

NB15

1L1
1L2
1L3
NB27
=1-F5

360
361
362
1 3 5 1 3 5 1 3 5
=1-KF1 =1-KF2 =1-KF3
.3 2 4 6 .3 2 4 6 .4 2 4 6
150
151
152

GND GND GND GND GND GND

155

155

158

158

158
154

154

157

157

157
153

153

156

156

156
T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE

=1-MF1 =1-MF2 =1-MF3 =1-MF4 =1-MF5 =1-MF6

+EXT +EXT +EXT +EXT +EXT +EXT

X/2.8 -AMB

-K6 -K7 -K8

/1.3 /1.4 /1.4

-XTB7
8 9 10

-XP2 -XP2 -XP2

8 9 10
127

128

129

A1 A1 A1

=1-KF1 A2 =1-KF2 A2 =1-KF3 A2

2
2/1.2

LD27947a

Figure 17 - FAN WIRING, STANDARD AIR FLOW

74 JOHNSON CONTROLS
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

2L1
2L1/1.5
2L2
2L2/1.5
2L3
2L3/1.5

=2-F4

450
451
453

2L1
2L2
2L3
NB27
=2-F5

460
461
462
1 3 5 1 3 5 1 3 5
=2-KF1 =2-KF2 =2-KF3
.7 2 4 6 .8 2 4 6 .9 2 4 6

5
250
251
252

GND GND GND GND GND GND

255

255

258

258

258
254

254

257

257

257
253

253

256

256

256
T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE T1 T2 T3 PE

=2-MF1 =2-MF2 =2-MF3 =2-MF4 =2-MF5 =2-MF6

+EXT +EXT +EXT +EXT +EXT +EXT

Y/2.8

-K22 -K23 -K24

/1.9 /1.10 /1.10

-XTB10
8 9 10

-XP3 -XP3 -XP3

6 7 8
227

228

229

A1 A1 A1

=2-KF1 A2 =2-KF2 A2 =2-KF3 A2

LD27947b

FIGURE 17 - F
 AN WIRING, STANDARD AIR FLOW (CONT’D)

JOHNSON CONTROLS 75
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

FAN WIRING
035-21583-118
Rev H

1L1
1L1/1.1
NB40 1L2
1L2/1.1
1L3
1L3/1.1

=1-F4 =1-F5 =1-F6

NB12 NB54 NB55 NB15

350 353 356

351 354 357
352 355 358

1 3 5 1 3 5 1 3 5 1 3 5 1 3 5 1 3 5
=1-KF1 =1-KF2 =1-KF3 =1-KF4 =1-KF5 =1-KF6
.2 2 4 6 .4 2 4 6 .5 2 4 6 .6 2 4 6 .4 2 4 6 .3 2 4 6
150
151
152

153
154
155

156
157
158

159
160
161

162
163
164

165
166
167
GND

GND

GND

GND

GND

GND
L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE

.2 .4 .5 .6 .4 .3

=1-MF1 =1-MF2 =1-MF3 =1-MF4 =1-MF5 =1-MF6

+EXT +EXT +EXT +EXT +EXT +EXT

X/2.8 -AMB

-K6 -K7 -K8

/1.3 /1.4 /1.4

-XTB7
8 9 10

-XP2 -XP2 -XP2

8 9 10

=1-XTBM 127 =1-XTBM 128 =1-XTBM 129

128 129
127

=1-MF5 =1-MF3 =1-MF4

=1-MF1 =1-MF6 =1-MF2 +EXT +EXT +EXT
+EXT +EXT +EXT .5 TW .4 TW .4 TW
.2 TW .6 TW .3 TW
> > > > > >
TW. TW. TW.
TW. TW. TW.
=1-XTBM =1-XTBM =1-XTBM =1-XTBM =1-XTBM =1-XTBM
81 82 84 85 87 88
81

82

84

85

87

88

A1 A1 A1 A1 A1 A1

=1-KF1 A2 =1-KF6 A2 =1-KF2 A2 =1-KF5 A2 =1-KF3 A2 =1-KF4 A2

2
2/1.2

NB15 NB55 NB12 NB54

LD27948a

Figure 18 - FAN WIRING, HIGH AIR FLOW

76 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

2L1
2L1/1.5
2L2
2L2/1.5
2L3
2L3/1.5

=2-F4 =2-F5 =2-F6

NB12 NB54 NB14 NB15

450 453 456

451 454 457
452 455 458

1 3 5 1 3 5 1 3 5 1 3 5 1 3 5 1 3 5
=2-KF1 =2-KF2 =2-KF3 =2-KF4 =2-KF5 =2-KF6
.7 2 4 6 .9 2 4 6 .10 2 4 6 .11 2 4 6 .9 2 4 6 .8 2 4 6
250
251
252

253
254
255

256
257
258

259
260
261

262
263
264

265
266
267
5
GND

GND

GND

GND

GND

GND
L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE L1 L2 L3 PE

.7 .9 .10 .11 .9 .3

=2-MF1 =2-MF2 =2-MF3 =2-MF4 =2-MF5 =2-MF6

+EXT +EXT +EXT +EXT +EXT +EXT

Y/2.8

-K22 -K23 -K24

/1.9 /1.10 /1.10

-XTB10
8 9 10

-XP3 -XP3 -XP3

6 7 8
=2-XTBM =2-XTBM =2-XTBM
227 228 228 229 229
227
227

=2-MF2 =2-MF5 =2-MF3 =2-MF4

=2-MF1 =2-MF6 +EXT +EXT +EXT +EXT
+EXT .7 TW +EXT .8 TW .11 TW .9 TW .10 TW
.11 TW
> > > > > >
TW. TW. TW. TW. TW.
TW.
=2-XTBM =2-XTBM =2-XTBM =2-XTBM =2-XTBM =2-XTBM
181 182 183 184 186 187
181

182

183

184

186

187

A1 A1 A1 A1 A1 A1

=2-KF1 A2 =2-KF6 A2 =2-KF2 A2 =2-KF5 A2 =2-KF3 A2 =2-KF4 A2

NB15 NB14 NB12 NB54

LD27948b

FIGURE 18 - FAN WIRING, HIGH AIR FLOW (CONT’D)

JOHNSON CONTROLS 77
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

SINGLE AND DUAL POINT WIRING OPTIONS

035-21583-116
Rev E

208/230V-3-60HZ 208/230V-3-60HZ
460V-3-60HZ 208/230V-3-60HZ
460V-3-60HZ 575V-3-60HZ 460V-3-60HZ
575V-3-60HZ 380/415V-3-50/60HZ NB1 575V-3-60HZ
380/415V-3-50/60HZ 380/415V-3-50/60HZ
NB1 2 4 6
NB1 -QSD 2 4 6
-QCB
-XTBC -QSD 2 4 6
U V W PE PE
NB17 PE
1 3 5
1L1

L1 1 3 5
NB16 1 3 5
1L2

L2
1L3

L3

1L1
1L1/1.1
1L2/1.1
1L3/1.1

2L1/1.4
2L2/1.5
2L3/1.5

1 3 5 1 3 5

1L2
=1-QCB =2-QCB

1L3
1L1/1.1
1L2/1.1
1L3/1.1

2L1/1.4
2L2/1.5
2L3/1.5
2 4 6 2 4 6
1L1/1.1 1L1
1L2
1L3

2L1
2L2
1L3/1.1

2L3/1.5
1L2/1.1

2L1/1.4
2L2/1.5

SINGLE POINT WIRING OPTIONS

208/230V-3-60HZ
460V-3-60HZ
575V-3-60HZ
380/415V-3-50/60HZ

NB31

1 3 5 PE 1 3 5 PE
=1-QCB =2-QCB

2 4 6 2 4 6
2L1
1L1

1L3
1L2/1.1 1L2

2L2/1.5 2L2
1L3/1.1

2L1/1.4

2L3/1.5
1L1/1.1

DUAL POINT WIRING OPTION

LD27949

DWG. 16

Figure 19 - SINGLE AND DUAL POINT WIRING OPTIONS

78 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 79
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

PUMP WIRING

035-21583-105
Rev G

1L1
1L1/1.1
1L2
1L2/1.1 -J11
1L3 -AMB
1L3/1.1
J11 J11 J11 J11 J11
4 9 14 5 10 15
-W1 W2
1 3 5 1 3 5

2 4 6 2 4 6

NB19
GND GND
300
301
302

303
304
305
-QMMSP1 -QMMSP2
.2 .3

1
1/1.1
149/2.3
23

-XTB8
6 -AMB

V/2.3
149

-K13 -K11
/1.6 /1.5

-XTB8
-XTB8
7 4

-XTBC2 -XTBC2 +EXT

24

33

NB52

-KP1 -KP2 +EXT +EXT

+EXT
2
2/1.2 2/2.5

LD27950a

DWG. 5
Figure 20 - PUMP WIRING

80 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

PUMP WIRING

1L1
1L1/1.1
1L2
1L2/1.1
1L3
1L3/1.1
-J11
-AMB
J11 J11 J11
9 14 10 15
-F7
-F6

GND

BLK
-KP2

BLK
-KP1

RED
RED
91 92 93 95 12 18
91 92 93 95 12 18 DI1 DI4
DI1 DI4
-UFSC2
UFSC2

E
E

5
1
1/1.1
23

-XTB8
6 -AMB
149
149/2.2
V/2.4

-K13 -K11
/1.6 /1.5
33
24

-XTB8
7 4

-XTB8
-XTBC2 -XTBC2

=1-XTBF
149

GND GND
-KP1 KP2 +EXT
+EXT

2 2
2/1.2 2/2.8

LD27950b

DWG. 5
FIGURE 20 - PUMP WIRING (CONT’D)

JOHNSON CONTROLS 81
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

CONNECTION - EEV OPTION

035-21499-105
Rev C

=1-EEVC

INPUT CONFIGURATION
0-10V

ON
J15-3 S+
P15 TO MICROBOARD STEP-1 OFF
J15-7 S-
STEP-2 OFF
OPN STEP-3 OFF
POLARITY BI
CLS
DIRECTION STD
REF RESPONSE TIME STD
PULSE PER SECOND 200pps
BLK B
VALVE OPERATION STD
WHT W
TO SYSTEM #1 EEV
GRN G

RED R
T3 42 24V+

43 24V-
FROM TRANSFORMER -1T

=2-EEVC

INPUT CONFIGURATION
0-10V
ON

J15-4 S+
P15 TO MICROBOARD STEP-1 OFF
J15-8 S-
STEP-2 OFF
OPN STEP-3 OFF
POLARITY BI
CLS
DIRECTION STD
REF RESPONSE TIME STD
PULSE PER SECOND 200pps
BLK B
VALVE OPERATION STD
WHT W
TO SYSTEM #2 EEV
GRN G

RED R
T3 42A 24V+

43A 24V-
FROM TRANSFORMER -1T

LD27951

Figure 21 - EEV CONTROLLER ELEMENTARY DIAGRAM

82 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

THIS PAGE INTENTIONALLY LEFT BLANK

JOHNSON CONTROLS 83
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

COMPRESSOR WIRING
035-21589-106 REV N

     

* (;7 (;7 (;7 (;7

 $4
(;7

;7%)
(;7

: 8 9

8 9 :
;7% (

) *1'   

: 8 9
(;7
8 9 :
6)(:+7   6)(%51
( 
-% 6)(%/8   6)(%/.
*1'   

;7% 25
: 8 9
(;7 (;7
8 9 :
(
 
*1'   
-% (;7
: 8 9

8 9 :
(
-%
*1'   

(;7 (;7
*1'
25
*1'
%'35(' 
(;7
%'3%/.  $ %
        
 $6 %'3:+7  & 
 
$

)6&
7% 7% 7%
    / / / 8 9 :

3( 3(

$ $ $

$3 $0 $/

  

*1'
  
(;7
$    $9   

  

*1' *1' *1'

7%
)6&
7% (;7 (;7 (;7
7%
    / / / 8 9 :

3( 3(   

$) $' $&

*1'
(;7
$  
$    $:
 $ $ $

/'

Figure 22 - COMPRESSOR WIRING

84 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

    

*1'
(;7
$    $*


*
(;7 *1'
*1' (;7
 $4 $    $+ 9


%635(' 
%63%/. 
%63:+7 

25
9
$ %
&

-%

%635(' 
%63%/. 
%63:+7 

25 25

$
&
%
5

25
(;7
%'35(' 
$ %  9
%'3%/.   
%'3:+7  & 

$

$ $ $

9
$1 $. $-
  

  

  

  

*1' *1' *1'

(;7 (;7 (;7

  

$( $% $$

$  

9
$ $ $

/'

FIGURE 22 - COMPRESSOR WIRING (CONT’D)

JOHNSON CONTROLS 85
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

POWER OPTIONS CONNECTION DIAGRAM

035-21589-103 REV C

2L1A 2L2A 2L3A

2L1B 2L2B 2L3B
2L1C 2L2C 2L3C
1L1A 1L2A 1L3A L1 A L2 A L3 A
1L1 B 1L2 B 1L3 B L1B L2B L3B
2L1A 2L2A 2L3A 1L1C 1L2C 1L3C
2L1B 2L2B 2L3B
2L1C 2L2C 2L3C
1L1A 1L2A 1L3A
1L1 B 1L2 B 1L3 B
1L1 C 1L2 C 1L3 C L1 A L2 A L3 A

1 3 5

-QSD
-QSD

2 4 6

1L1 A 1L2 A 1L3 A

1L1 B 1L2 B 1L3 B
1L1C 1L2C 1L3C

PE

PE PE

TRANSFORMER AND TERMINALS

ARE FOUND ON POWER SIDE 1L1A 1L2A 1L3A
OF DIVIDER PANEL 1L1B 1L2B 1L3B
1L1C 1L2C 1L3C

B 140C
1 3 5
-T3
R 2 LA

R B
R B

2 4 6
R2 B2

LD13234C

Figure 23 - POWER OPTIONS CONNECTION DIAGRAM

86 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

1L1 1L2 1L3 1L1 1L2 1L3

1L1 1L2 1L3

1 3 5 1 3 5
43 43
L1 B L2 B L3 B

33 33

1 3 5

5
34 34
2 4 6
44 44
2 4 6 2 4 6
2L1 A 2L2 A 2L3 A
2L1 B 2L2 B 2L3 B
2L1C 2L2C 2L3C

24 2 33 2
2

A1 A2 A1 A2

1 3 5 21 1 3 5 21

-KP1 -KP2

2L1A 2L2A 2L3A

2L1B 2L2B 2L3B
2L1C 2L2C 2L3C

1 3 5
2 4 6 22 2 4 6 22

300 301 302 303 304 305

2 4 6

LD13234D

FIGURE 23 - POWER OPTIONS CONNECTION DIAGRAM (CONT’D)

JOHNSON CONTROLS 87
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

POWER PANEL

035-21589-101 REV H

    

/ /
/ / / 25
/ / /
)
*

    $     $

) )
&$.1 &$.1

/&' /&' /&'

.) .) .)

    $     $
. ; , ;
. - - , +
/ ;

$ $ $ $ $ $

% % %

/ /

) ;7%)

/$ / $ /$ /% / % / % / & / & / &


$          


$ 


$

$
  
$
)+3

$ %

$ 

$ 

$ 

$ &         
( 
 $$ -
 $% ,
 $( ,
+
+ % % %
*
 $- 2 -03
 <
$5 <
1
 $4 1 $ $ 2 $ $ 3 $ $ 4
 $* 0 3  4 5 5
 $9 0
(+5+(;7 /
 -  .  /
. / 0 0
(+5+(;7 *         
)  %  &  '
63 & '

63

63 .0 .0 .0

 %  &  '

   &    '   
     

        

/'

Figure 24 - POWER PANEL

88 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

     

25 / / /

/ / / / / / ( .
) /

    $

.7 .7 ) ) &$.1

   
/&' /&' /&'
  
.) .) .)

    $
* ( ) (
+ * ) '
(

$ $ $ $ $ $

% % %

5
/ $ / $ / $ / % / % / % / & / & / &

         ;7%)
 $


 $


$

$

$
% $

 $

 $

 $
        
& $
 (
3 $&
2 $'
2 $)
% % % 1
1
0
8  $:
7
$ $ : 7  $/
$ $ 8 $ $ 9 6  $0
9  : $ $
6  $3
 3  4  5 5  $+
   4    5    63
 %  &  '
63
& '
63

.0 .0 .0

 %  &  '

   &    '   
     

        

/'

FIGURE 24 - POWER PANEL (CONT’D)

JOHNSON CONTROLS 89
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

MICRO PANEL CONNECTIONS

---> -AMB
-XP2 -XTB7
1 1D 4 119A 7 122A 10 129A 13 26A 1 118A
118B
2 2C 5 120A 8 127A 11 131A 14 29A
2 119A
3 118A 6 121A 9 128A 12 25A 15 30A
3 120A 127A
-XP2 121A
4
13 26B 10 129B 7 122B 4 119B 1 1E
5 122A
14 29B 11 131B 8 127B 5 120B 2 2D
NB34
15 30B 12 25B 9 128B 6 121B 3 118C 6 118B

---> -AMB 7 123A

-XP3
13 32A 10 27A 7 228A 4 221A 1 218A 8 127A
TB7
14 140A 11 28A 8 229A 5 222A 2 219A -XTB8 1
9 128A
1 1C
15 3A 12 31A 9 231A 6 227A 3 220A 1D
10 129A
2 140A
140C
-XP3 NB34
3 131A
1 218C 4 221B 7 228B 10 27B 13 32B

2 219B 5 222B 8 229B 11 28B 14 140B 4 33

NB19
3 220B 6 227B 9 231B 12 31B 15 3B 5

-XP4 ---> -AMB 6 23 1

1 13I 2 18B 24
7
3 19B 4
8

-XP4 9
3 19C 4
1 13K 2 18C
-AMB
-XTB9 TB8
1 1B
-XTB10 1C
218A 2 231A
NB41 SC-EQ 1
218B
TB9
2 219A 3
1
COM
COM

COM

SHD
HOT

SHD

+
+

-
-

3 220A 227A 4
J10

J12

J8

031-02550-
4 221A

5 222A
OR
R NB34
6 218B TB10
1
7 223A

8 227A

9 228A

-ELINK 10 229A

-J14
1 40
1
2 41 J14
3 GND B
PORT2A RS485 PORT2B RS232 PORT3 RS485
COM

SHD

SHD

SHD

SHD
COM

REF

REF

REF
HOT

RX

NB4
TX

NB49
PORT1

NB34 NB39
+
-

-
TB5

J2

1E
ELINK/AMB:RED
ELINK/AMB:BLK

223A 123A 33 32A 31A 30A 29A 28A 27A 26A 25A 24 23 5A L1 2 LA 2 2A 2A
5B 2B GNDA
WHT
BLK

223I 123I 33I 32I 31I 30I 29I 28I 27I 26I 25I 24I 23I 5I LI 2I 2I 2I GNDI

LK LK
R
TB1
GND

223 123 33 32 31 30 29 28 27 26 25 24 23 5 L 2 2 2
1 2 3 4 -AMB

223E 123E 33E 32E 31E 30E 29E 28E 27E 26E 25E 24E 23E 5E LE 2E 2E 2E GNDE
ELINK/AMB:RED
ELINK/AMB:BLK

223 123 33 24 5 2 2AS 2

2 GND
BLK 5 GND
-T5 -XTBC2
ELINK/AMB:SCR

GND
WHT
NB41
2 NB49 NB4 NB19 NB4 NB49

NB19

LD29090a

Figure 25 - MICRO PANEL CONNECTIONS

90 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

035-21589-102
REV. O

-J15
7 S- 8 S- 9
-XP5 -ADIS
4 S+ 5 6
NB46
1 BRN-NEG NB6
1 2 3 S+ 2 BRN-POS

12

13J
SHLD GND + +5V +5V GND RXD TXD CTS RTS
TB1 NB6
PL1 TB4
TB2 TB3
1 1 J15 SHLD REF - +
- BRN-NEG -SOA
TB6

TB5

+ BRN-POS
J2 1
J1
1

NB32

-J6 -J6
NB37
7 BLCT:BLK 8 BECT:BLK 9 BAMB:BLK 7 8 BDAT:BLK 9

4 BLCT:RED 5 BECT:RED 6 BAMB:RED 4 5 BDAT:RED 6

1 BLCT:SCR 2 BECT:SCR 3 BAMB:SCR 1 2 BDAT:SCR 3

9 =1-BSP:BLK
-J7 5
10 =1-BSP:WHT 11 =1-BDP:WHT 12 1-TC:PNK 52

5 =1-BSP:RED 6 =1-BDP:RED 7 =1-BDP:BLK 8

1 =1-BSP:SCR 2 =1-BDP:SCR 3 4 1-TC:BRN 53 -XTBC1

A-NEG A-
NO

A-POS A+
J6
-J8
51 51
7 BST:BLK 8 9
NB42 13H 13 13J
4 BST:RED 5 6 13I
1
7
4

J7 50 50
1 BST:SCR 2 3
J4 13G 13
13H
21 21
-J9
13F 13
9
5
1

J8 9 =2-BSP:BLK 10 =2-BSP:WHT 11 =2-BDP:WHT 12 2-TC:PNK 54 13G

20 20
5 =2-BSP:RED 6 =2-BDP:RED 7 =2-BDP:BLK 8
13E 13
1 =2-BSP:SCR 2 =2-BDP:SCR 3 4 2-TC:BRN 55 13F
7
4
1

J9 19A 19 19B

13D 13
NO

-J10 13E
18A 18B NB50
18
7 BST:BLK 8 9
13C 13 13
NB42
9
5
1

J10 BST:RED 5 13D -SF

4 6
14 14
14 SFE:BLK
1 BST:SCR 2 3
13B 13 SFE:WHT
13C
1 J12 SP
7
4
1

-SFE
J13 9 11 J11 -J11
13A 13
5 6 13B
12 11 A-POS 12 LK1 13 14 J11/QPA1:BLK 15 J11/QPA2:BLK
2 40
1 1 40A SFE:BRN
6 A-NEG 7 LK1 8 9 J11/QPA1:RED 10 J11/QPA2:RED
41A 41 SFE:BLU
1 2 3 4 J11/QPA1:SCR 5 J11/QPA2:SCR
5A 5B L1
GNDA
GNDB
NB37 NB19
NB46

-F1 -F2 -F10 2W

2Y 1Y -J13
2X 1X
2B 1A 1 13A 3 20 5 51 7 9 14 11
2C 1B
2 12 4 21 6 50 8 18A 10 19A 12

-T1

40 41
1A 3A 1.5A 40A 41A
1E
1 NB19
NB39 NB72

LD29090b

FIGURE 25 - MICRO PANEL CONNECTIONS (CONT’D)

JOHNSON CONTROLS 91
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

FOUR FAN UNITS

DIMENSIONS – YLAA0041HE, YLAA0048HE, YLAA0058HE, YLAA0065HE,
YLAA0081HE, YLAA0082HE

1678 [66.1]
1117 [44.0]
035-24059-001 REV-E

POWER ENTRY
2077 [81.8] 330.2 [13.00] WIDE X 177.8 [7.00] HIGH

1097 [43.2]
1669 [65.7]

201 [0.8]
1177 [46.4]
82 [3.2]

CONTROL PANEL BOTTOM DETAIL

DISCONNECT SWITCH
(OPTIONAL)
51 [2.0]
OVERALL HEIGHT

FRAME HEIGHT
2251 [88.6]
2398 [94.4]

3” VICTAULIC
INLET
1595 [62.8]

1085 [42.7]

822 [32.4]

269 [10.6]
254 [10.0]

16 [5/8”] WATER CONNECTION 36 [1.4]

MOUNTING 36 [1.4] MOUNTING
2242 [88.3] HOLES TYP MOUNTING HOLES TYP
333 [13.1] 1884 [74.2] HOLES TYP
FRAME WIDTH
2254 [88.8] 442 [17.4] 442 [17.4]
OVERALL WIDTH 2180 [85.8]
WATER CONNECTIONS
2627 [103.4]
OVERALL LENGTH LD23531

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 26 - FOUR FAN UNITS DIMENSIONS – YLAA0041HE, YLAA0048HE, YLAA0058HE, YLAA0065HE,

YLAA0081HE, YLAA0082HE

92 JOHNSON CONTROLS
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

FOUR FAN UNITS

DIMENSIONS – YLAA0070SE, YLAA0080SE, YLAA0089SE

1678 [66.1]
1117 [44.0]

035-24059-002 REV-E

POWER ENTRY
330.2 [13.00] WIDE X 177.8 [7.00] HIGH
(190mm x 120mm EUROPEAN BUILD)

1097 [43.2]
1669 [65.7]
2077 [81.8]

(28mm EUROPEAN BUILD)

21 [0.8]
1177 [46.4]
(1298mm EUROPEAN BUILD)

CONTROL PANEL BOTTOM DETAIL

OPTIONAL
82 [3.2]

DISCONNECT SWITCH
(STANDARD ON CE)
51.4 [2.02]

5
3” VICTAULIC
OUTLET
(OPTIONAL HEAT
OVERALL HEIGHT

RECOVERY UNIT)
2398 [94.4]

3” VICTAULIC
FRAME HEIGHT

INLET
2248 [88.5]

3” VICTAULIC
1595 [62.8] (60Hz)
(1497mm (50Hz) )

1276 [50.2]

INLET
1085 [42.7]

822 [32.4]
686 [27.0]

36 [1.4]
254 [10.0]

269 [10.6]
141 [5.5] OR 226.9 [8.93] 16mm [5/8”] WATER CONNECTIONS MOUNTING
741 [29.2]
DIMENTION VARIES BASED ON MOUNTING 36 [1.4] HOLES TYP
588 [23.2]
CHILLER MODEL SELECTED HOLES TYP MOUNTING
1735 [68.3] HOLES TYP
2242 [88.3] 495 [19.5]
FRAME WIDTH 1921 [75.6]
2547 [100.3]
2256 [88.8] WATER CONNECTIONS
2911 [114.6]
OVERALL WIDTH FRAME LENGTH
2994 [117.9] LD23532
OVERALL LENGTH

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 27 - FOUR FAN UNITS DIMENSIONS – YLAA0070SE, YLAA0080SE, YLAA0089SE

JOHNSON CONTROLS 93
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

FIVE FAN UNITS

DIMENSIONS – YLAA0100SE

2795 [110.0]

1678 [66.1] 035-24059-004 REV-E

573 [22.5]
561 [22.1]

POWER ENTRY

1132 [44.6]
330.2 [13.00] WIDE X 177.8 [7.00] HIGH
(190mm x 120mm EUROPEAN BUILD)

1669 [65.7]
2077 [81.8]

(28mm EUROPEAN BUILD)

1177 [46.4]

21 [0.8]
1298mm EUROPEAN BUILD

CONTROL PANEL BOTTOM DETAIL

82 [3.2]

OPTIONAL (OPTIONAL HEAT

DISCONNECT SWITCH RECOVERY UNIT)
(STANDARD ON CE)
51.4 [2.02]
OVERALL HEIGHT DEPENDS ON BUILD LOCATION

3” VICTAULIC
OUTLET
REFER TO NOTES 5 ADN 6 ABOVE

3” VICTAULIC INLET
FRAME HEIGHT
2248 [88.5]

3” VICTAULIC
OUTLET
1595 [62.8] (60Hz)
(1497mm (50Hz))

1276 [50.2]

822 [32.4]
686 [27.0]

254 [10.0]
269 [10.6]
289 [11.4] 288.0 [11.34] 35 [1.4] 35 [1.4]
DIMENSION VARIES BASED 16mm [5/8”]
ON CHILLER MODEL SELECTED 194 [7.6] MOUNTING
HOLES TYP
588 [21.1]
2242 [88.3]
FRAME WIDTH 1753 [69.0] 1222 [48.1]

2256 [88.8]
1256 [49.5]
OVERALL WIDTH
3022 [119.0]
FRAME LENGTH
3245 [127.8]
WATER CONNECTIONS
3696 [145.5] LD23533
OVERALL LENGTH

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 28 - FIVE FAN UNITS DIMENSIONS – YLAA0100SE

94 JOHNSON CONTROLS
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

SIX FAN UNITS

DIMENSIONS – YLAA0092HE, YLA0101HE, YLAA0115SE, YLAA0120SE

2795 [110.0]
1678 [66.1]

561 [22.1] 035-24059-006 REV E

POWER ENTRY
330.2 [13.00] WIDE X 177.8 [7.00] HIGH
(190mm x 120mm EUROPEAN BUILD)

1669 [65.7]
573 [22.5]
2077 [81.8]

1177 [46.4]

(28mm EUROPEAN BUILD)

1298mm EUROPEAN BUILD

21 [0.8]
82 [3.2]

CONTROL PANEL BOTTOM DETAIL

OPTIONAL 83 [3.3]
DISCONNECT SWITCH
(STANDARD ON CE)

5
OVERALL HEIGHT DEPENDS ON BUILD LOCATION
REFER TO NOTES 5 ADN 6 ABOVE

(OPTIONAL HEAT
RECOVERY UNIT) 3” VICTAULIC
FRAME HEIGHT

INLET
2248 [88.5]

3” VICTAULIC
INLET
1595 [62.8] (60Hz)
(1497mm (50Hz))

1276 [50.2]

686 [27.0]

822 [32.4]
269 [10.6]

254 [10.0]
WATER CONNECTIONS
288 [11.3] OR 288.0 [11.34] 15.9 [0.63] 35 [1.4] 35 [1.4]
DIMENSION VARIES BASED 1256 [49.5] MOUNTING MOUNTING MOUNTING
ON CHILLER SELECTED HOLES TYPE HOLES TYPE HOLES TYPE
2242 [88.3] 194 [7.6] 1753 [69.0] 1222 [48.1]
FRAME WIDTH

2254 [88.8] 588 [23.1] 2434 [95.8]

OVERALL WIDTH
3613 [142.2]
FRAME LENGTH
3244 [127.7]
WATER CONNECTIONS
3696 [145.5]
OVERALL LENGTH
LD26940

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 29 - SIX FAN UNITS DIMENSIONS – YLAA0092HE, YLAA0101HE, YLAA0115SE, YLAA0120SE

JOHNSON CONTROLS 95
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

EIGHT FAN UNITS

DIMENSIONS – YLAA0125HE, YLAA0136SE,
YLAA0139HE, YLAA0142HE, YLAA0150SE, YLAA0155SE

035-24059-010 REV-D

POWER ENTRY
2077.3 [81.78] 330.2 [13.00] WIDE X 177.8 [7.00] HIGH

82.9 [3.26]

1177.0 [46.35]

20.7 [0.81]
CONTROL PANEL BOTTOM DETAIL

(OPTIONAL HEAT 3” VICTAULIC OUTLET

RECOVERY UNIT)
3” VICTAULIC INLET
4” VICTAULIC
INLET

4” VICTAULIC
OUTLET
FRAME HEIGHT
2397.6 [94.39]

2248.0 [88.50]

1275.7 [50.22]

685.7 [27.00]

221 [8.7] OR 288.0 [11.34]

36.4 [1.43]
DIMENTION VARIES BASED
36.4 [1.43] MOUNTING
ON CHILLER SELECTED MOUNTING
254.4 [10.02] HOLES TYPE
822.400 [32.3780]
2242.0 [88.27] 15.9 [0.63] HOLES TYPE
MOUNTING 136.8 [5.38]
FRAME WIDTH 588.3 [23.16]
HOLES TYPE

1473.2 [58.00] 1518.6 [59.79]

2255.7 [88.81]
OVERALL WIDTH
194.6 [7.66]

1753.2 [69.03] 1917.9 [75.51]

885.9 [34.88]
4731.4 [186.28] WATER CONNECTIONS
FRAME LENGTH
4768.9 [187.75] LD26941
OVERALL LENGTH

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 30 - EIGHT FAN UNITS DIMENSIONS – YLAA0125HE, YLAA0136SE, YLAA0139HE, YLAA0142HE,

YLAA150SE, YLAA0155SE

96 JOHNSON CONTROLS
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TEN FAN UNITS

DIMENSIONS – YLAA0170SE, YLAA0156HE, YLAA0175HE

15.9mm [5/8”] DIA

MOUNTING HOLES (TYP.)

035-24059-012 REV-B

POWER ENTRY
330.2 [13.00] WIDE X 177.8 [7.00] HIGH
2077.3 [81.78]

2169.2
[85.40]
1177 [46.35]

20.7 [0.81]
82.4 [3.24]

CONTROL PANEL BOTTOM DETAIL

1753.2 1839.5 1621.5

ORIGIN [69.03] [72.42] [63.84]

[1.43]
36.4
194.6
[7.66]

5
4” VICTAULIC INLET

(OPTIONAL HEAT 4” VICTAULIC OUTLET

RECOVERY UNIT)

3” VICTAULIC OUTLET

3” VICTAULIC INLET
FRAME HEIGHT
2397.6 [94.39]

2248.0 [88.50]

4” VICTAULIC
INLET
1275.7 [50.22]

[42.72]
1085.1

588.3 [23.16] 4” VICTAULIC

140.8mm OR 288.0mm
254.4 [10.02]
822.4 [32.38]

685.7 [27.00]

OUTLET
[5.54”]-[11.34”] -DIMENTION VARIES BASED 1256.1 [49.45]
ON CHILLER MODEL SELECTED 2002.8 136.8 [5.38]
[78.85]
2242.1 [88.27] 2061.5
FRAME WIDTH [81.16]

2254.4 [88.76] 3154.3

OVERALL WIDTH [124.18]
5260.0
[207.08]

5848.3 [230.25]
FRAME LENGTH
5885.7 [231.72]
OVERALL LENGTH
LD26942

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 31 - TEN FAN UNITS DIMENSIONS – YLAA0170SE, YLAA0156HE, YLAA0175HE

JOHNSON CONTROLS 97
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TWELVE FAN UNITS

DIMENSIONS – YLAA0200HE, YLAA0230HE

035-24059-017 REV-
15.9mm [5/8”] DIA
MOUNTING HOLES (TYP.)

POWER ENTRY

20.7 [0.81]
330.2 [13.00] WIDE X 177.8 [7.00] HIGH
2077.3
[81.78]

1177 [46.35]
[3.16]
80.3

CONTROL PANEL BOTTOM DETAIL

1753.2 [69.03] 1839.5 [72.42] 1611.6 [63.45] 1305.1 [51.38]

[1.43]
ORIGIN

36.4
194.6 [7.66]

5” VICTAULIC INLET 5” VICTAULIC OUTLET

2938.4 [115.69] 5” VICTAULIC

(OPTIONAL HEAT
RECOVERY UNIT) INLET

3” VICTAULIC OUTLET
FRAME HEIGHT

3” VICTAULIC OUTLET
2251.4 [88.64]
2397.7 [94.40]

1275.7 [50.22]

1085.1 [42.72]
732.9 [28.85]

[27.00]
685.7

137.5
588.3 [5.43] 5” VICTAULIC
[16.20]

2241.5 [88.25] - FRAME WIDTH [23.16]

411.4

OUTLET
2253.344 [88.71]
OVERALL WIDTH 1256.1 [49.45]

2061.5 [81.16]
3154.3 [124.18]

4986.1 [196.30]

6459.3 [254.30]

6968.9 [274.37] - FRAME LENGTH

7006.0 [275.83] - OVERALL LENGTH

LD26943

NOTE:
Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures rated performance, reliable
operation, and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow
patterns and possible diminished performance. Johnson Control’s unit controls will optimize operation without nuisance high-pressure safety
cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is
no higher than on spring isolators. Recommended minimum clearances: Side to wall – 6 ft; rear to wall – 6 ft; control panel to end wall – 4 ft;
top – no obstructions allowed; distance between adjacent units – 10 ft. No more than one adjacent wall may be higher than the unit.

Figure 32 - TWELVE FAN UNITS DIMENSIONS - YLAA200HE, YLAA0230HE

98 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

WEIGHT DISTRIBUTION AND ISOLATOR Whenever the isolator option is ordered, the isolators
MOUNTING POSITIONS will be shipped loose with the chiller. Packed with
the isolators and also in the control panel informa-
General tion packet is a drawing and table specifically for each
Weights of specific chiller models vary significantly as chiller, based on the option selection. The drawing and
options are added. As a result, total weights, weights at table will be similar to the two samples shown below
individual isolator positions, and actual isolator selec- and on the following page. The drawing will show the
tion at each position cannot be published due to the isolator locations along with the weight in pounds and
vast number of possible combinations. This informa- kilograms at the specific location, isolator position,
tion will be available when the specific chiller/ option and location measurements for each isolator.
selection is made from the local Johnson Controls sales
office. Be aware, weights will change with each op- Sample Isolator Location Drawings
tion along with possible isolator changes. Weights and See Figure 33 below for sample printouts supplied in
isolators may need to be recalculated when the option the isolator package and in the chiller panel literature
selections are changed. packets.

UNIT SHIPPING KG LB
WEIGHT
(Display on unit data
2032 4480
nameplate)
5

L1 L2
Control Panel

0
R1 R2
0 Y

Top View
X

X DISTANCE Y DISTANCE
OPERATING WEIGHT
LOCATION INCHES (MM) INCHES (MM) VENDOR NUMBER
LB (KG)

R1 19.5 (495.3) 1.36 (34.5) ND-D / Yellow 1092 (495.3)

L1 19.5 (495.3) 86.86 (2206.2) ND-D / Yellow 1406 (637.8)
R2 96.1 (2440.9) 1.36 (34.5) ND-D / Yellow 1015 (460.4)
L2 96.1 (2440.9) 86.86 (2206.2) ND-D / Yellow 1304 (591.5)

Figure 33 - SAMPLE PRINTOUT SUPPLIED IN THE ISOLATOR PACKAGE AND IN THE CHILLER PANEL
LITERATURE PACKET

JOHNSON CONTROLS 99
 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

CLEARANCES
See Figure 34 below for minimum clearances for all
YLAA units.

(2 m)

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

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 ft (3 m) apart.

Figure 34 - UNIT CLEARANCES – ALL MODELS

100 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ISOLATOR LOCATIONS
FOUR FAN ISOLATOR LOCATIONS YLAA0041HE, YLAA0048HE, YLAA0058HE, YLAA0065HE,
YLAA0081HE, YLAA0082HE

LD18078

FOUR FAN ISOLATOR LOCATIONS YLAA0070SE, YLAA0080SE, YLAA0089SE

1.4

1.4

LD18079

All dimensions are inches unless otherwise specified.

JOHNSON CONTROLS 101

 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

FIVE and SIX FAN ISOLATOR LOCATIONS

YLAA0100SE, YLAA0120SE, YLAA0092HE, YLAA0101HE

LD18080

EIGHT FAN ISOLATOR LOCATIONS YLAA0136SE, YLAA0155SE, YLAA0139HE, YLAA0142HE

LD18081

All dimensions are inches unless otherwise specified.

102 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

TEN FAN ISOLATOR LOCATIONS YLAA0170SE, YLAA0156HE, YLAA0175HE

5
LD18082

TWELVE FAN ISOLATOR LOCATIONS YLAA0200HE, YLAA0230HE

TOP
VIEW LD21040

All dimensions are inches unless otherwise specified.

JOHNSON CONTROLS 103

 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ISOLATOR INFORMATION
One Inch Deflection Spring Isolator Cross-reference

CP

5/8"

Ø1/2"

H"

C"
T"
B" L"
D"
W"
LD13759A

MOUNT DIMENSION DATA (IN.)

TYPE W D L B C T H
CP1 3 5/8 7 3/4 6 1/2 4 3/4 1/2 5 5/8
CP2 3 5/8 10 1/2 9 1/4 7 3/4 9/16 6

MODEL NUMBER RATED CAPACITY (LB) DEFLECTION RATED (IN.) COLOR CODE
CP1-1D-85 85 1.360 LT. PURPLE
CP1-1D-120 120 1.200 DK. YELLOW
CP1-1D-175 175 1.170 DK. BLUE
CP1-1D-250 250 1.400 YELLOW
CP1-1D-340 340 1.130 RED
CP1-1D-510 510 1.020 BLACK
CP1-1D-675 675 1.320 DK. PURPLE
CP1-1D-900 900 1.020 DK. GREEN
CP1-1D-1200 1200 0.900 GRAY
CP1-1D-1360 1360 0.770 WHITE
CP1-1D-1785N 1785 0.880 GRAY/RED

MODEL NUMBER RATED CAPACITY (LB) DEFLECTION RATED (IN.) COLOR CODE
CP2-1D-1020 1020 1.020 BLACK
CP2-1D-1350 1350 1.320 DK. PURPLE
CP2-1D-1800 1800 1.020 DK. GREEN
CP2-1D-2400 2400 0.900 GRAY
CP2-1D-2720 2720 0.770 WHITE
CP2-1D-3570N 3570 0.880 GRAY / RED

104 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

ONE INCH DEFLECTION SPRING ISOLATORS

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

LD13790

JOHNSON CONTROLS 105

 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

2 IN. DEFLECTION ISOLATOR CROSS-REFERENCE

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" LD13761A
3/8"

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
HARDWARE ZINC-ELECTROPLATE.
1. All dimensions are in inches, interpret per ANSI 4. All springs are designed for 50% overload capac-
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 & 2D-2870

Y14. 5. REFER TO PAGE FOR INSTALLATION INSTRUCTIONS.

6. CONSULT FACTORY FOR CONCRETE INSTALLATION. ity with exception of the 2D-3280N and 2D-2870.
2. Standard finish: housing-powder coated (color, 5. See next page for installation instructions.
black), spring-powder coated (color, see table be-
6. Consult factory for concrete installation.
low) hardware - zinc-electroplate.
3. Equipment must be bolted or welded to the top
plate to meet allowable seismic ratings.

MODEL Y2RSI-2D SEISMICALLY RESTRAINED VIBRATION ISOLATOR FOR 2 IN. DEFLECTION

RATED ALLOWABLE
SEISMIC RATED LOAD SPRING RATE SOLID LOAD COLOR
DEFLECTION G RATING
MOUNT SIZE (LB) (LB/IN.) (LB) CODE
(IN.) HORIZONTAL
Y2RSI-2D-150 150 2.4 62 234 WHITE 34.7
Y2RSI-2D-320 320 2.3 140 490 YELLOW 16.3
Y2RSI-2D-460 460 2.3 200 688 GREEN 11.3
Y2RSI-2D-710 710 2.2 330 1072 DK BROWN 7.3
Y2RSI-2D-870 870 1.9 460 1312 RED 6.0
Y2RSI-2D-1200N 1200 1.9 638 1818 RED/BLACK 4.3
Y2RSI-2D-1450 1450 1.8 900 2450 TAN 3.6
Y2RSI-2D-1690 1690 1.7 1140 2892 PINK 3.1
Y2RSI-2D-2000N 2000 1.7 1318 3342 PINK/BLACK 2.6
Y2RSI-2D-2640N 2640 1.5 1854 4283 PINK/GRAY 2.0
PINK/GRAY/
Y2RSI-2D-2870N 3080 1.5 2004 4629 1.7
ORANGE
PINK/GRAY/DK
Y2RSI-2D-3280N 3740 1.8 2134 4930 1.4
BROWN

106 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

2 IN. DEFLECTION ISOLATOR INSTALLATION AND ADJUSTMENT

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

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

GROMMET

1/4 - 3/8 GAP EQUIPMENT

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

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

LD13763B

JOHNSON CONTROLS 107

 FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

NEOPRENE ISOLATOR CROSS-REFERENCE

RD-Style DW

Isolators

CD

MOLDED
DURULENE

HF ø AD THRU
TYP 2 PLACES

BT

AL
W
L

LD13760A

1. All dimensions are inches, interpreted per ANSI 4. AL = Mounting hole center to center spacing.
Y14. Notes:
1. All dimensions are inches, interpreted per ANSI Y14. 5. HF = Free height of mount, before loading. Oper-
2. Refer to Page 98 for installation instructions.
2. See next page for installation instructions.
3. Mount molded ating height
in weather resistant duralene compound as standard. calculated
Also available by the free height less the
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. static deflection under load. All dimensions for
3. Mount molded in weather 5. HFresistant
= Free height duralene
of mount, prior com-
to loading. Operating height calculated by the free height less the
static deflection under load. All dimensions for reference only. reference only.
pound as standard. Also6.available in other materi-
Hardware zinc-electroplated.

als such as natural rubber, extreme high tempera- 6. Hardware zinc-electroplated.

ture silicone, high-damped silicone, nitrile and
EDPM.

MOUNT DIMENSION DATA (IN.)

TYPE L W HF AL AD BT CD DW
RD1-WR 3.13 1.75 1.25 2.38 0.34 0.19 5/16-18 UNC X 3/4 1.25
RD2-WR 3.88 2.38 1.75 3.00 0.34 0.22 3/8-16 UNC X 1 1.75
RD3-WR 5.50 3.38 2.88 4.13 0.56 0.25 1/2-13 UNC X 1 2.50
RD4-WR 6.25 4.63 2.75 5.00 0.56 0.38 1/2-13 UNC X 1 3.00

RATED RATED RATED RATED

MODEL DURO MODEL DURO
CAPACITY DEFLECTION CAPACITY DEFLECTION
NUMBER (± 5) NUMBER (± 5)
(LB) (IN) (LB) (IN.)
RD2-LIGHT BLUE-WR 35 0.4 30 RD3-Brown-WR 250 0.5 40
RD2-BROWN-WR 45 0.4 40 RD3-Brick Red-WR 525 0.5 50
RD2-BRICK RED-WR 70 0.4 50 RD3-Lime-WR 750 0.5 60
RD 2-LIME-WR 120 0.4 60 RD3 Charcoal-WR 1100 0.5 70

RATED RATED RATED RATED

MODEL DURO MODEL DURO
CAPACITY DEFLECTION CAPACITY DEFLECTION
NUMBER (± 5) NUMBER (± 5)
(LB) (IN.) (LB) (IN.)
RD2-LIGHT BLUE-WR 135 0.5 30 RD4-BROWN-WR 1500 0.5 40
RD2-BROWN-WR 170 0.5 40 RD4-BRICK RED-WR 2250 0.5 50
RD2-BRICK RED-WR 240 0.5 50 RD4-LIME-WR 3000 0.5 60
RD 2-LIME-WR 380 0.5 60 RD4 CHARCOAL-WR 4000 0.5 70
RD2 CHARCOAL-WR 550 0.5 70

108 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 5 – TECHNICAL DATA
ISSUE DATE: 10/24/2019

INSTALLATION OF NEOPRENE VIBRATION ISOLATORS

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 in. maximum difference can be
tolerated).

TOP BOLT
("B")
TOP WASHER 5
D D

("C")
("B")

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

JOHNSON CONTROLS 109

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THIS PAGE INTENTIONALLY LEFT BLANK

110 JOHNSON CONTROLS

FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 6 – COMMISSIONING

Commissioning of this unit should only Charging after vacuuming - Charge 10%
be carried out by Johnson Controls Au- of the specified amount of refrigerant into
thorized personnel. the evaporator. Otherwise, the compressor
is in risk when it starts. Find the system
charges on the unit nameplate.

Commissioning personnel should be thoroughly famil-

iar with the information contained in this literature, in Do NOT overcharge the system. Otherwise
addition to this section. High Discharge Pressure will frequently
occur.
Perform the commissioning using the detailed checks
outlined. See Equipment Pre-Startup And Startup
Checklist (Form 150.72-CL1) as the commissioning
procedure is carried out.
Charging Refrigerant
PREPARATION – POWER OFF If you vacuum the system first, add only the volume of
The following basic checks should be made with the refrigerant shown on the nameplate.
customer power to the unit switched OFF. To charge the refrigerant after vacuuming, complete
the following steps:
Inspection
Inspect unit for installation damage. If found, take ac- 1. Start the chilled liquid pump and use the water
valve to ensure that the chilled liquid is circulat-
tion and/or repair as appropriate.
ing in the evaporator.
6
Refrigerant Charge
2. Place the refrigerant drum on the scale and log the
Packaged units are normally shipped as standard with weight (Wi).
a full refrigerant operating charge. Check that refrig-
erant pressure is present in both systems and that no 3. Connect the refrigerant valve to the angle valve in
leaks are apparent. If no pressure is present, a leak test the liquid line and purge the air from the charging
must be undertaken, the leak(s) located and repaired. pipe.
Remote systems and units are supplied with a nitrogen 4. Use the angle valve to direct the charge to the high
holding charge. These systems must be evacuated with side only.
a suitable vacuum pump/recovery unit as appropriate
to below 500 microns. 5. Find the system charge on the nameplate. Calcu-
late the weight to the high side (Wh), which is 90%
Do not liquid charge with static water in the cooler. of the system charge, and calculate W as follows:
Care must also be taken to liquid charge slowly to
avoid excessive thermal stress at the charging point. W = Wi - Wh
Once the vacuum is broken, charge into the condenser 6. Open the valve on the drum and reverse the drum,
coils with the full operating charge as given in SEC- so only liquid is charged into the system.
TION 5 – TECHNICAL DATA.
7. Monitor the reading of the scale and shut off the
ALWAYS keep the water pump running valve when the scale reaches W.
when vacuuming the system, removing
refrigerating from the system or adding 8. Close the angle valve and switch the charging
refrigerant to the system until the process pipe from angle valve to Schrader valve between
is completed. If you do NOT, the evapora- the evaporator and EEV/TXV.
tor may freeze and ruin the system.
9. Purge the air from the charging pipe.
10. Open the valve on the drum to charge the remain-
ing 10% of the system charge into the low side.

JOHNSON CONTROLS 111

 FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019

However, sometimes the system can run without Temperature Sensor(s)

enough refrigerant in it. If you have no idea how much
Ensure the leaving liquid temperature sensor is coated
refrigerant is inside of the system, then follow the steps
with heat conductive compound (Part No. 013-00890-
below.
000) and is inserted to the bottom of the water outlet
1. Connect the charging hose between the refrigerant sensor well in the cooler. This sensor also provides
tank and the angle valve at the inlet of evaporator. some freeze protection and must always be fully
Exclude the air inside of hose. inserted in the water outlet sensor well.
2. Put the refrigerant tank on a scale and read the ini- Compressor Heaters
tial weight. Leave the tank on scale until process
is complete. Verify the compressor heaters are energized. If the am-
bient temperature is above 96°F (36°C) the compressor
3. Get as many compressors running as the system heaters must be on for at least 8 hours before start-up
permits. to ensure all refrigerant liquid is driven out of the com-
4. Open the angle valve 1.5 turns. pressor and the oil. If the ambient temperature is below
5. Open the valve on the tank. 86°F (30°C), allow 24 hours.
Quickly shut down the angle valve or Power Connections
the tank valve immediately if all of com-
pressors stop suddenly in the process of Check that the customer power cables are connected
charging. correctly to the terminal blocks or optional circuit
breaker. Ensure that connections of power cables with-
in the panels to the circuit breaker or terminal blocks
6. Monitor the suction superheat (SH) and liquid are tight.
subcooling (SC). If SH is around 10R and SC>6R,
close the angle valve. Wait at least 15 min; Grounding
7. If SC<10R or SH>10R always, continue to charge Verify that the unit’s protective ground terminal(s) are
the system. Open the angle valve 1.5 turns. Close properly connected to a suitable grounding point. En-
it after one pound is added. Wait another 15 min. sure that all unit internal ground connections are tight.
Repeat this step until both SC and SH are around
Compressor Oil
10R with all of the fans and compressors running;
To add oil to a circuit – connect a Johnson Controls
8. Close the angle valve and tank valve. Disconnect
hand oil pump (Part No. 470-10654-000) to the 1/4
the hose.
in. oil charging connection on the compressors with a
Service and Oil Line Valves length of clean hose or copper line, but do not tighten
the flare nut. Use YORK “V” oil 011-00949-000, when
Open each compressor suction, economizer, and dis-
adding oil to Copeland compressor. The Bitzer com-
charge service valve. If valves are of the back-seat
pressor uses 011-00982-000 oil. Pump oil until all air
type, open them fully (counterclockwise) then close
has been purged from the hose then tighten the nut.
one turn of the stem to ensure operating pressure is fed
Stroke the oil pump to add oil to the oil system. Ap-
to pressure transducers. Open the liquid line service
proximately 1.8 gal to 2.3 gal is present in the each
valve and oil return line ball valve fully in each system.
refrigerant system. Oil levels in the oil equalizing line
Fans sight glass should be between the bottom and the mid-
dle of the sight glass with the system OFF. High oil
Check that all fans are free to rotate and are not dam- levels may cause excessive oil carryover in the system.
aged. Ensure blades are at the same height when ro- High oil concentration in the system may cause nui-
tated. Ensure fan guards are securely fixed. sance trips resulting from incorrect readings on the lev-
el sensor and temperature sensors. Temperature sensor
errors may result in poor liquid control and resultant
liquid overfeed and subsequent damage to the com-
pressor. While running, a visible sign of oil splashing
in the sight glass is normal.

112 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019

JUMP INPUT
LOCATION SIGNAL
1 0–10 V

DIP SWITCH ALL OTHER

YLAA0230
NUMBER CHILLERS
1 OFF OFF
2 OFF ON
3 OFF OFF

DIP SWITCH ALL

NUMBER CHILLERS
4 OFF
5 OFF
6 ON
7 OFF
8 OFF

LD23530

Figure 35 - EEV IB-G INTERFACE BOARD 6

Switch Settings
Assure the chiller OFF/ON UNIT switch at the bottom Flow rates and pressure drops must be within the limits
of the keypad is OFF. Place the optional circuit breaker given in SECTION 5 – TECHNICAL DATA. Operation
handle on the panel door to ON. The customer’s dis- outside of these limits is undesirable and could cause
connection devices can now be set to ON. damage.

Verify the control panel display is illuminated. Assure If mains power must be switched OFF for extended
the system switches under the SYSTEM SWITCHES maintenance or an extended shutdown period, the com-
key are in the OFF position. pressor suction, discharge and economizer service stop
valves should be closed (clockwise). If there is a pos-
Supply Voltage sibility of liquid freezing due to low ambient tempera-
tures, the coolers should be drained or power should be
Verify that the site voltage supply corresponds to the
applied to the chiller. This will allow the cooler heater
unit requirement and is within the limits given in SEC-
to protect the cooler from freezing down to –20°F. Be-
TION 5 – TECHNICAL DATA.
fore placing the unit back in service, valves should be
Water System opened and power must be switched ON (if power is
removed for more than 8 hours) for at least 8 hours (24
Verify the chilled liquid system has been installed cor- hours if ambient temperature is below 86°F [30°C])
rectly, and has been commissioned with the correct before the unit is restarted.
direction of water flow through the cooler. The inlet
should be at the refrigerant piping connection end of
the cooler. Purge air from the top of the cooler using
the plugged air vent mounted on the extension pipe.

JOHNSON CONTROLS 113

 FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019

Sporlan EEV Interface Board PREPARATION – POWER ON

Verify the jumper and dip switch settings, Figure 35 Perform the commissioning using the de-
on page 113, during a chiller start-up for YLAA and tailed checks outlined. Refer to the Equip-
YCWL chillers with Sporlan Electronic Expansion ment Pre-Startup And Startup Checklist
Valves. (Form 150.72-CL1) as the commissioning
procedure is carried out.
With the IB-G unpowered, select the input signal of 0
V to 10 V by installing the supplied jumper to number
1 of the 5 pin locations shown in the left hand side of Apply power to the chiller. Turn on the option panel
EEV board. Set numbers 1 to 3 of the DIP switches in circuit breaker if supplied.
accordance with the unit models. Set numbers 4 to 8 in The machine is now live!
accordance with the table shown in Figure 35 on page
113. For YLAA and YCWL chillers, DIP switch num-
ber 6 must be set to ON for a quicker EEV response.

F/ Protection
Verify all sources of electrical supply to the unit are Low Switch
taken from a single point of isolation. Check that the Verify a chilled water flow switch is correctly fitted in
maximum recommended fuse sizes given in SECTION the customer’s piping on the cooler outlet, and wired
5 – TECHNICAL DATA has not been exceeded. into the control panel correctly using shielded cable.
There should be a straight run of at least 5 pipe diam-
eters on either side of the flow switch. The flow switch
should be connected to terminals 13 and 14 of XTBC1
on the panel.

114 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019

HOW TO COMMISSION THE PUMP VFD

1. Put pump in HAND mode.

LD18421

LD18422

6. Set parameter 22-89 to the Sensorless Flow read-

out taken in the previous step.
LD18418

2. Change parameter 0-20 (default value is option

1601 – “Reference [Unit]”) to option 1850 “Sen-
sorless Readout” to display Sensorless flow read-
out on top left corner of screen.

LD18419

3. Change parameter 0-22 (default value is option

1610 – “Power [kW]”) to option 1654 “Feedback
LD18423
1 [unit]” to display Sensorless pressure readout on
top right corner of screen. 7. Set parameter 22-87 to a value that is X% of the
4. Check with customer regarding new actual flow value in 20-21. This percentage needs to be calcu-
and head and verify what flow is required. Ramp lated based on the design flow and the published
the pump up or down to achieve requested flow. minimum flow for the unit. This ensures that the
Record the VFD sensorless flow and pressure – drive will not allow the pump to operate below the
this will be your new set point. minimum flow of the chiller. You have now read-
justed the quadratic control curve to match actual
5. Set parameter 20-21 to the Sensorless Pressure site conditions.
readout taken in the previous step.
8. Change parameter 0-20 back to default value of
option 1601 – “Reference [Unit]”.
9. Change parameter 0-22 back to default value of
option 1610 – “Power [kW]”.
10. Put the VFD back into AUTO mode.

LD18420
LD18424

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 FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019

Display Elements and Operation Buttons

LED in green indicates the current flow level. LED 0 to When the flow switch is set up, the LED indicates light
LED 9 represent the range between no flow and maxi- as follows:
mum flow.
• LED 0, LED 1, LED 2, LED 3, LED 4, LED 5,
A lighting LED indicates the position of the switch LED 6, LED 8, and LED 9: green
point. Orange represents a closed output and red rep- • LED 7: orange
resents an open output. The switch point of LED 7 is a
factory setting, but it can be adjusted per the conditions LOW HIGH
in the field.
0 1 2 3 4 5 6 7 8 9
To adjust or configure the flow switch, use the two LD29414
LED indicator buttons, as shown on the following im- Figure 37 - FLOW SWITCH SET
age.
When the normal flow is below the representation
FLOW
range of the display, the LED displays in a similar way
LOW HIGH to the following example:

0 1 2 3 4 5 6 7 8 9 LOW HIGH

SET POINT
0 1 2 3 4 5 6 7 8 9
LD29415

Figure 38 - FLOW BELOW THE

REPRESENTATION RANGE
LD29413

Figure 36 - LED INDICATOR BUTTONS

When the normal flow exceeds the representation
range of the display, the LED displays the following:
Setting the Thermal Dispersion Flow Switch
LOW HIGH
To set up the flow switch, perform a high-flow adjust-
ment, which is a quick reaction with falling low.
0 1 2 3 4 5 6 7 8 9
LD29416
1. Make sure that the normal flow circulates through
Figure 39 - FLOW EXCEEDS THE
the evaporator. REPRESENTATION RANGE
2. Switch on the power supply of the control.
3. Turn on and turn off all LEDs step by step. Make
sure that the output is closed and the unit is in op-
eration mode during this process.
4. Press and hold the ► push button until LED 9
turns on.
The flow switch is adapted to the flow conditions of
the unit.

116 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019

YLAA

INSTALLATION CHECKLIST Supersedes 150.72-CL1 (318) Form 150.72-CL1 (818)

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:

A. PRE-STARTUP
Unit Checks (No Power) a. High voltage........................................................
The following basic checks should be made with the b. Low voltage ........................................................
customer power to the unit switched OFF. c. Check tightness of power wiring inside the pow-
er panel on both sides of the motor contactors
1. Inspect the unit for shipping or installation
and overloads. ....................................................
damage ................................................................... d. Check to ensure BAS control is wired correctly
2. Assure that all piping has been completed. ............ and operational. ................................................... 6
3. Visually check for refrigerant piping leaks ............... 9. Check for proper size fuses in main and control
circuits, and verify overload setting corresponds
4. If available, open suction line ball valve, discharge
with RLA and FLA values in electrical tables (see
line ball valve, and liquid line valve for each
Table 8 and Table) ...................................................
system.....................................................................
10. Assure 120VAC (110VAC for 50Hz units) Control
5. At shutdown, the oil level should be between
Power to TB1 has 15 amp minimum capacity. .........
the bottom and middle of the oil equalizing sight
glass. ....................................................................... 11. Are all water temp sensors inserted completely into
their respective wells and are coated with heat con-
6. Are water pumps ON?
ductive compound? .................................................
a. Check and adjust water pump flow rate and pres-
sure drop across the cooler Refer to Operating 12. Are the evaporator TXV bulbs strapped onto the
Limitations, SECTION 8 - TECHNICAL DATA suction lines at 4 or 8 o'clock positions or suction
(Form 150.72-ICOM6). ....................................... temp. sensors if EEVs are installed? ......................
b. Is the flow switch in place, wired properly, and
13. Do all sides of the unit have the recommended
operational? ........................................................
amount of space for air ventilation? Refer to SEC-
c. Are the chilled water pumps operational? .......... TION 4 - INSTALLATION (Form 150.72-ICOM6). ...
d. Is the water system filled with water? ................. 14. Does the cabinet edge clear the insulation of cable
e. Is ALL air purged from the water system? ....... at the power entry to avoid slicing the cable? .........
NOTE: Any air found in the water system MUST
be purged before the chiller can start up. Exces- B. COMPRESSOR HEATER
sive flow may cause catastrophic damage to the (Power On - 24 Hours Prior To Start)
heat exchanger (evaporator)
Apply 120VAC and verify its value between terminals
7. Is the control panel free of foreign material (wires, 5 and 2 of XTBC2. The voltage should be 120VAC
metal chips and so on)? .......................................... (110VAC for 50Hz units) plus or minus 10% .................
8. Is ALL power wired to the chiller and meets the follow- NOTE: Power must be applied 24 hours prior to start-up.
ing N.E.C. and local codes? Each heater should draw approximately 0.5 to 1A.

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 FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019
FORM 150.72-CL1 (818)
ISSUE DATE: 8/30/2018

C. STARTUP
SETPOINTS ENTRY LIST
Panel checks (Power On - Both unit switch Off) UNIT OPTIONS
1. Apply 3-phase power and verify its value. Voltage Display Language
imbalance should be no more than 2% of the aver-
Sys 1 Switch
age voltage. ............................................................
Sys 2 Switch
2. Apply 120VAC (110VAC for 50Hz units) and verify its
Chilled Liquid
value on the terminal block in the Power Panel. Make the
measurement between Terminals 5 and 2 of XTBC2. Ambient Control*
The voltage should be 120VAC plus or minus 10% Local/Remote Mode
3. Program/verify the Cooling Setpoints, Program Control Mode
Setpoints, and Unit Options. Record the values in Display Units
the Setpoints Entry List table. ................................... Lead/Lag Control*
4. Place the unit into Service Mode and cycle each Fan Control*
condenser fan to ensure proper rotation. ..................
Manual Override
5. Turn system 2 OFF and leave System 1 run- Current Feedback
ning. Refer to SECTION 6 – OPERATIONS (Form
Power Fail Restart
150.72-ICOM6), UNIT KEYS, Option 2 for more in-
formation on System Switches. ................................ Soft Start**
Unit Type**
6. Connect a manifold gauge to system 1 suction and
discharge service valves. .......................................... Refrigerant Type**

7. Place the Unit Switch in the control panel to the ON Flash Card Update
position. ...................................................................... Remote Temperature Reset
NOTE: The chilled liquid setpoint may need to be External Evaporator Pump
temporarily lowered to ensure all compressors
YORK Hydro Kit Pump
cycle ON.
Pump Selection
As each compressor cycles ON, ensure that the dis-
charge pressure rises and the suction pressure de- Data Log to Flashcard Enabled
creases. If this does not occur, the compressor being Expansion Valve Type**
tested is operating in the reverse direction and must be
corrected. COOLING SETPOINTS

8. Verify proper compressor rotation and then turn the Cooling Setpoint
Unit Switch to “OFF.” ................................................ Range
NOTE: This unit uses scroll compressors which EMS-PWM Max. Setpoint
can only operate in one direction. Failure to ob-
PROGRAM SETPOINTS
serve this will lead to compressor failure.
Discharge Pressure Cutout
9. Turn system 1 OFF and system 2 ON (two system units
Suction Pressure Cutout
only). Refer to SECTION 6 – OPERATIONS (Form
150.72-ICOM6), UNIT KEYS for more information ... Low Ambient Temp. Cutout
Leaving Liquid Temp. Cutout
10. Place the Unit Switch in the control panel to the ON
position. ...................................................................... Anti-Recycle Time
NOTE: The chilled liquid setpoint may need to Fan Control ON Pressure
be temporarily lowered to ensure all compres- Fan Differential OFF Pressure
sors cycle ON.
Total # of Compressors
As each compressor cycles ON, ensure that the dis-
charge pressure rises and the suction pressure de- Number of Fans/System*
creases. If this does not occur, the compressor being Unit/Sys Voltage*
tested is operating in the reverse direction and must be
Remote Unit ID
corrected.
*Not on All Models **Viewable Only
11. Ensure the Data Logging feature has been enabled
.....................................................................................
12. Verify proper compressor rotation and then turn the
Unit Switch to OFF. ....................................................

2 JOHNSON CONTROLS

118 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 6 – COMMISSIONING
ISSUE DATE: 10/24/2019
FORM 150.72-CL1 (818)
ISSUE DATE: 8/30/2018

D. CHECKING SUPERHEAT AND SUBCOOLING Example:

Suction Temp = 46 °F
The subcooling temperature of each system can be calcu- minus Suction Press
lated by recording the temperature of the liquid line at the 105 PSIG converted to Temp - 34 °F
outlet of the condenser and subtracting it from the liquid Superheat = 12 °F
line saturation temperature at the liquid stop valve (liquid When adjusting the expansion valve (TXV only), the
line saturation temperature is converted from a tempera- adjusting screw should be turned not more than one
ture/pressure chart). turn at a time, allowing sufficient time (approximately
Example: 15 minutes) between adjustments for the system and
Liquid line pressure = the thermal expansion valve to respond and stabilize.
325 PSIG converted to temp. 101 °F
minus liquid line temp. - 83 °F Assure that superheat is set at a minimum of 10 °F
Subcooling = 18 °F (5.56 °C) with a single compressor running on each
circuit.
The subcooling should be adjusted to 18 °F (10 °C) at
design conditions. 2. Record the suction temperature, suction pressure,
saturation temperature, and superheat of each sys-
1. Record the liquid line pressure and its saturated
tem below:...................................................................
temperature, liquid line temperature and subcooling
below:....................................................................... SYS 1 SYS 2
SYS 1 SYS 2 Suction Temp = _______ _______ °F
Liq Line Press = _______ _______PSIG Suction Pressure = _______ _______ PSIG
Saturated Temp = _______ _______ °F Saturation Temp = _______ _______ °F
Liq Line Temp = _______ _______ °F Superheat = _______ _______ °F
Subcooling = _______ _______ °F
E. LEAK CHECKING
After the subcooling is verified, the suction superheat-
should be checked. The superheat should be checked Leak check compressors, fittings, and piping to en-
only after steady state operation of the chiller has been
sure no leaks. ...............................................................
established, the leaving water temperature has been
pulled down to the required leaving water temperature, If the unit is functioning satisfactorily during the initial 6
and the unit is running in a fully loaded condition. Correct operating period with no safeties trip and the compres-
superheat setting for a system is 10 °F to 15 °F (5.56 °C sors cycle to control water temperature to the setpoint,
to 8.33 °C) 18” (46 cm) from the heat exchanger. the chiller is considered ready to be placed into operation.
Superheat should typically be set for no less than
10 °F with only a single compressor running on a
circuit. The superheat is calculated as the difference
between the actual temperature of the returned refriger-
ant gas in the suction line entering the compressor and
the temperature corresponding to the suction pressure
as shown in a standard pressure/temperature chart.

JOHNSON CONTROLS 3
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THIS PAGE INTENTIONALLY LEFT BLANK

120 JOHNSON CONTROLS

FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 7 – UNIT CONTROLS

LD13283

INTRODUCTION IPU II AND I/O BOARDS

The YORK Control Center is a microprocessor based The IPU and I/O boards are assembled to function as
control system designed to provide the entire control a single microprocessor controller. The IPU II board
for the liquid chiller. The control logic embedded in contains a microprocessor and is the controller. The
the microprocessor based control system will provide I/O board handles all of the chiller I/O (Inputs and
control for the chilled liquid temperatures, as well as Outputs). System inputs from pressure transducers and
sequencing, system safeties, displaying status, and temperature sensors are connected to the I/O board.
daily schedules. The MicroComputer Control Center
consists of four basic components: The I/O board constantly scans inputs to monitor the
chiller operating conditions. The input values are trans-
1. IPU II and I/O Boards mitted the IPU II microprocessor board. From this in- 7
formation, the IPU II then issues commands to the I/O
2. Transformer
board relay outputs to control contactors, solenoids,
3. Display etc. for Chilled Liquid Temperature Control and to re-
act to safety conditions. The I/O board converts logic
4. Keypad
signals to operate relay outputs to 115 VAC levels used
The keypad allows programming and accessing set by motor contactors, fan contactors, solenoid valves,
points, pressures, temperatures, cutouts, daily sched- etc. to control system operation. The low voltage side
ule, options, and fault information. of all relay coils on the I/O board are powered by +12 V.

Remote cycling, demand limiting, and chilled liquid Keypad commands are actuated upon by the micropro-
temperature reset can be accomplished by field sup- cessor to change set points, cutouts, scheduling, oper-
plied contacts. ating requirements, and to provide displays. The key-
pad and display are connected to the I/O board.
Compressor starting/stopping and loading/unload-
ing decisions are performed by the Microprocessor to The on-board power supply converts 24 VAC from 75
maintain leaving or return chilled liquid temperature. VA, 120/24 VAC 50/60 Hz UL listed class 2 power
These decisions are a function of temperature devia- transformer to +12 V, +5 V and +3.3 V using switch-
tion from set point. ing and linear voltage regulators located on the I/O and
IPU II boards. These voltages are used to operate in-
A Master ON/OFF switch activates or deactivates the tegrated circuitry on the board. The 40 character dis-
unit. play and unit sensors (transducers and temp sensors)

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 FORM 150.72-ICOM6
SECTION 7 – UNIT CONTROLS
ISSUE DATE: 10/24/2019

are supplied power for the micro board +5 V supply. KEYPAD

24 VAC is rectified, but not regulated, to provide un-
The 12 button non-tactile keypad allows the user to
regulated +30 VDC to supply all of the digital inputs.
retrieve vitals system parameters such as system pres-
The I/O board contains one green “Power” LED to in- sures, temperatures, compressor running times and
dicate that the board is powered up and one red “Sta- starts, option information on the chiller, and system set
tus” LED to indicate by blinking that the processor points. This data is useful for monitoring chiller opera-
is operating. The I/O board also contains two sets of tion, diagnosing potential problems, troubleshooting,
Receiver/Transmit LED’s, one for each available serial and commissioning the chiller.
communication port. The receive LED’s are green, and
It is essential the user become familiar with the use of the
the Transmit LED’s are red.
keypad and display. This will allow the user to make full
A jumper on the I/O board selects 4 mA to 20 mA or 0 use of the capabilities and diagnostic features available.
VDC to 10 VDC as the input type on the remote tem-
perature reset analog input. UNIT SWITCH
A unit ON/OFF switch is just underneath the keypad.
TRANSFORMER This switch allows the operator to turn the entire unit
A 75 VA, 120/240 VAC, 50/60 Hz transformer is pro- OFF if desired. The switch must be placed in the ON
vided to supply power to the Microprocessor Board, position for the chiller to operate.
which in turn rectifies, filters, and regulates as neces-
sary to supply power to the display, sensors, and trans- BATTERY BACK-UP
ducers. The IPU II contains a Real Time Clock integrated cir-
cuit chip with an internal battery backup. The purpose
DISPLAY of this battery backup is to assure any programmed
The 40 Character Display (2 lines of 20 characters) is values (set points, clock, cutouts, etc.) are not lost dur-
a liquid crystal display used for displaying system pa- ing a power failure regardless of the time involved in a
rameters and operator messages. power cut or shutdown period.

When a key is pressed, such as the OPER DATA key, PROGRAMMING # OF COMPRESSORS
system parameters will be displayed and will remain
The total number of compressors is programmable un-
on the display until another key is pressed. The system
der the PROGRAM key. Dual (2) system chillers can
parameters can be scrolled with the use of the ↑ (UP)
have 4, 5, or 6 compressors.
and ↓ (DOWN) arrow keys. The display will update all
information at a rate of about 1 a second.
Display Messages may show characters indicating
“greater than” (>) or “less than” (<). These characters
indicate the actual values are greater than or less than
the limit values which are being displayed.

122 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 7 – UNIT CONTROLS
ISSUE DATE: 10/24/2019

STATUS KEY

00066VIP

Unit Status D A I L Y S C H E D U L E
Pressing the STATUS key will enable the operator to S H U T D O W N
determine current chiller operating status. The messag-
es displayed will include running status, cooling de- The DAILY SCHEDULE SHUTDOWN message in-
mand, fault status, external cycling device status. The dicates that the daily/holiday schedule programmed is
display will be a single message relating to the highest keeping the unit from running.
priority message as determined by the microprocessor.
Status messages fall into the categories of General Sta- REMOTE STOP
tus and Fault Status. NO RUN PERM

The following General, Safety, and Warning messages

REMOTE STOP NO RUN PERM shows that a remote
are displayed when the STATUS key is pressed. Fol-
start/stop contact is open in series with the flow switch.
lowing each displayed message is an explanation per-
These contacts are connected to Terminals 51 and 13 of
taining to that particular message.
XTBC1. A 3-second delay is built into the software to 7
General Status Messages prevent nuisance shutdowns due to erroneous signals
on the run permissive input.
In the case of messages which apply to individual
systems, SYS 1 and SYS 2 messages will both be dis- FLOW SWITCH
played and may be different. In the case of single sys- OPEN
tem units, all SYS 2 messages will be blank.
U N I T S W I T C H O F F
FLOW SWITCH OPEN indicates the flow switch con-
S H U T D O W N
tacts connected to Terminals 13 and 14 of XTBC1 are
open. A 3-second delay is built into software to prevent
nuisance shutdowns due to erroneous signals from the
This message informs the operator that the UNIT switch flow switch.
on the control panel is in the OFF position which will
not allow the unit to run. S Y S 1 S Y S S W I T C H O F F
S Y S 2 S Y S S W I T C H O F F
R E M O T E C O N T R O L L E D
S H U T D O W N
SYS SWITCH OFF tells that the system switch under
OPTIONS is turned OFF. The system will not be al-
The REMOTE CONTROLLED SHUTDOWN mes- lowed to run until the switch is turned back ON.
sage indicates that either an ISN system or RCC has
turned the unit OFF, not allowing it to run.

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S Y S 1 N O C O O L L O A D The limiting pressure is a factory set limit to keep the

S Y S 2 N O C O O L L O A D system from faulting on the high discharge pressure
cutout due to high load or pull down conditions. When
the unload point is reached, the microprocessor will
This message informs the operator that the chilled liq-
automatically unload the affected system by de ener-
uid temperature is below the point (determined by the
gizing one compressor. The discharge pressure unload
set point and control range) that the microprocessor
will occur when the discharge pressure gets within 10
will bring on a system or that the microprocessor has
psig (0.69 barg) of the programmed discharge pres-
not loaded the lead system far enough into the loading
sure cutout. This will only happen if the system is fully
sequence to be ready to bring the lag system ON. The
loaded and will shut only one compressor OFF. If the
lag system will display this message until the loading
system is not fully loaded, discharge limiting will not
sequence is ready for the lag system to start.
go into effect. Reloading the affected system will oc-
S Y S 1 C O M P S R U N X cur when the discharge pressure drops to 85% of the
S Y S 2 C O M P S R U N X unload pressure and 10 minutes have elapsed.
S Y S 1 S U C T L I M I T I N G
The COMPS RUNNING message indicates that the S Y S 2 S U C T L I M I T I N G
respective system is running due to demand. The “X”
will be replaced with the number of compressors in
When this message appears, suction pressure limiting
that system that are running.
is in effect. The suction pressure limit is a control point
S Y S 1 A R T I M E R X X S that limits the loading of a system when the suction
S Y S 2 A R T I M E R X X S pressure drops to within 15% above the suction pres-
sure cutout. On a standard system programmed for 44
psig / 3.0 bar suction pressure cutout, the microproces-
The anti-recycle timer message shows the amount of
sor would inhibit loading of the affected system with
time left on the respective systems anti-recycle timer.
the suction pressure less than or equal to 1.15 * 44 psig /
This message is displayed when the system is unable to
3.0 bar = 50 psig / 3.5 bar. The system will be allowed
start due the anti-recycle timer being active.
to load after 60 seconds and after the suction pressure
S Y S 1 A C T I M E R X X S rises above the suction pressure load limit point.
S Y S 2 A C T I M E R X X S
S Y S 1 L O A D L I M I T X X %
S Y S 2 L O A D L I M I T X X %
The anti-coincidence timer is a software feature that
guards against 2 systems starting simultaneously. This
This message indicates that load limiting is in effect
assures instantaneous starting current does not become
and the percentage of the limiting in effect. This limit-
excessively high due to simultaneous starts. The mi-
ing could be due to the load limit/pwm input, ISN or
croprocessor limits the time between compressor starts
RCC controller sending a load limit command.
to 1 minute regardless of demand or the anti-recycle
timer being timed out. The anti-coincidence timer is M
A N
U A L
only present on two system units. O V
E R
R I D E

S Y S 1 D S C H L I M I T I N G
S Y S 2 D S C H L I M I T I N G If MANUAL OVERRIDE mode is selected, the STA-
TUS display will display this message. This will indi-
cate that the Daily Schedule is being ignored and the
When this message appears, discharge pressure limit-
chiller will start-up when chilled liquid temperature
ing is in effect. The Discharge Pressure Limiting fea-
allows, Remote Contacts, UNIT switch and SYSTEM
ture is integral to the standard software control; howev-
switches permitting. This is a priority message and can-
er the discharge transducer is optional on some models.
not be overridden by anti-recycle messages, fault mes-
Therefore, it is important to keep in mind that this con-
sages, etc. when in the STATUS display mode. There-
trol will not function unless the discharge transducer is
fore, do not expect to see any other STATUS messages
installed in the system.
when in the MANUAL OVERRIDE mode. MANUAL

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ISSUE DATE: 10/24/2019

OVERRIDE is to only be used in emergencies or for S Y S 1 L O W S U C T P R E S S

servicing. Manual override mode automatically disables S Y S 2 L O W S U C T P R E S S
itself after 30 minutes.
S Y S 1 P U M P I N G D O W N The Suction Pressure Cutout is a software cutout that
S Y S 2 P U M P I N G D O W N helps protect the chiller from an evaporator freeze-up
should the system attempt to run with a low refrigerant
The PUMPING DOWN message indicates that a com- charge or a restriction in the refrigerant circuit.
pressor in the respective system is presently in the pro- Repeated starts after resetting a low suc-
cess of pumping the system down. When pumpdown is tion pressure fault will cause evaporator
initiated on shutdown, the liquid line solenoid or EEV freeze-up. Whenever a system locks out
will close and a compressor will continue to run. When on this safety or any safety, immediate
the suction pressure decreases to the suction pressure steps should be taken to identify the cause.
cutout set point or runs for 180 seconds, whichever
comes first, the compressor will cycle OFF. At system start, the cutout is set to 10% of programmed
value. During the next 3 minutes the cutout point is
Fault Safety Status Messages ramped up to the programmed cutout point. If at any
Safety Status messages appear when safety thresholds time during this 3 minutes the suction pressure falls
in the unit have been exceeded. Safeties are divided below the ramped cutout point, the system will stop.
into two categories – system safeties and unit safeties. This cutout is completely ignored for the first 30 sec-
System safeties are faults that cause the individual sys- onds of system run time to avoid nuisance shutdowns,
tem to be shut down. Unit safeties are faults that cause especially on units that utilize a low pressure switch in
all running compressors to be shut down. Following place of the suction pressure transducer.
are display messages and explanations.
After the first 3 minutes, if the suction pressure falls
System Safeties below the programmed cutout setting, a “transient
protection routine” is activated. This sets the cutout at
System safeties are faults that cause individual systems
10% of the programmed value and ramps up the cut-
to be shut down if a safety threshold is exceeded for 3
out over the next 30 seconds. If at any time during this
seconds. They are auto reset faults in that the system
30 seconds the suction pressure falls below the ramped
will be allowed to restart automatically after the fault
cutout, the system will stop. 7
condition is no longer present. However, if 3 faults on
the same system occur within 90 minutes, that system S Y S 1 M P / H P C O F A U L T
will be locked out on the last fault. This condition is S Y S 2 M P / H P C O F A U L T
then a manual reset. The system switch (under OP-
TIONS key) must be turned OFF and then back on
S Y S 1 M P / H P C O I N H I B
to clear the lockout fault. Fault messages will be dis-
S Y S 2 M P / H P C O I N H I B
played whenever a system is locked out.
S Y S 1 H I G H D S C H P R E S The Motor Protector/Mechanical High Pressure Cutout
S Y S 2 H I G H D S C H P R E S protect the compressor motor from overheating or the
system from experiencing dangerously high discharge
The Discharge Pressure Cutout is a software cutout in pressure.
the microprocessor and is backed-up by a mechanical
This fault condition is present when CR1 (SYS 1) or
high pressure cutout switch located in the refrigerant
CR2 (SYS 2) relays de-energize due to the HP switch
circuit. It assures that the system pressure does not ex-
or motor protector opening. This causes the respective
ceed safe working limits. The system will shutdown
CR contacts to open causing 0 VDC to be read on the
when the programmable cutout is exceeded and will be
inputs to the microboard. The fault condition is cleared
allowed to restart when the discharge pressure falls 40
when a 30 VDC signal is restored to the input.
psig below the cutout. Discharge transducers must be
installed for this function to operate.

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The internal motor protector opens at 185°F to 248°F This safety will shut down a system if either suction
(85°C to 120°C) and auto resets. The mechanical HP temperature or suction pressure sensors read out of
switch opens at 585 psig plus or minus 10 psig (27.92 range high or low. This condition must be present for 3
barg plus or minus 0.69 barg) and closes at 330 psig seconds to cause a system shutdown. The safety locks
plus or minus 25 psig (22.75 barg plus or minus 1.72 out a system after the first fault and will not allow au-
barg). tomatic restarting.
The compressor is also equipped with a discharge Unit Safeties
temperature sensor for the purpose of sensing inter-
Unit safeties are faults that cause all running compres-
nal scroll temperature. This sensor protects the scrolls
sors to be shut down. Unit faults are auto reset faults
from overheating due to inadequate cooling that may
in that the unit will be allowed to restart automatically
occur when refrigerant charge is low, or superheat is
after the fault condition is no longer present.
too high.
U N I T F A U L T :
When the sensor senses a high temperature, it opens
L O W A M B I E N T T E M P
the motor protector circuit in the compressor causing
the compressor to shut down.
The Low Ambient Temp Cutout is a safety shutdown
During the first two faults an MP/HP INHIBIT message designed to protect the chiller from operating in a low
will be displayed and the system will not be locked out. ambient condition. If the outdoor ambient temperature
Only after the third fault in 90 minutes will the MP/ falls below the programmable cutout, the chiller will
HPCO FAULT message be displayed. shut down. Restart can occur when temperature rises 2
Whenever the motor protector or discharge sensor °F above the cutoff.
shuts down a compressor and the system, the inter- U N I T F A U L T :
nal compressor contacts will open for a period of 30 L O W L I Q U I D T E M P
minutes to assure that the motor or scroll temperatures
have time to dissipate the heat and cool down. The MP/
HP INHIBIT message will be displayed while these The Low Leaving Chilled Liquid Temp Cutout protects
contacts are open or when the HPCO is open. the chiller form an evaporator freeze-up should the
While this message is displayed, the compressors chilled liquid temperature drop below the freeze point.
will not be permitted to start. This situation could occur under low flow conditions or
if the micro panel set point values are improperly pro-
After 30 minutes, the contacts will close and the sys- grammed. Anytime the leaving chilled liquid tempera-
tem will be permitted to restart. The microprocessor ture (water or glycol) drops below the cutout point, the
will not try to restart the compressors in a system that chiller will shutdown. Restart can occur when chilled
shuts down on this safety for a period of 30 minutes to liquid temperature rises 2 °F above the cutout.
allow the internal compressor to time out.
U N I T F A U L T :
During the 30 minute timeout, the MP/HPCO INHIB 1 1 5 V A C U N D E R V O L T A G E
message will be displayed. The MP/HPCO fault will
only be displayed after 3 shutdowns in 90 minutes, The Under Voltage Safety assures that the system is
indicating the system is locked out and will not not operated at voltages where malfunction of the mi-
restart. croprocessor could result in system damage. When the
S Y S 1 H I G H M T R C U R R 115VAC to the micro panel drops below a certain level,
S Y S 2 H I G H M T R C U R R a unit fault is initiated to safely shut down the unit. Re-
start is allowed after the unit is fully powered again and
the anti-recycle timers have finished counting down.
When the System Current Feedback option is installed
and selected (Option 11 under OPTIONS key Current
Feedback), this safety will operate as follows. If the
actual feedback voltage of the system proportional to
currents exceeds the programmed trip voltage for 5
seconds, the system will shutdown.

126 JOHNSON CONTROLS

FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

U N I T F A U L T : Resetting System Lockout Faults

H I G H M T R C U R R If 3 faults on the same system occur within 90 minutes,
that system will be locked out on the last fault. This
When the CURRENT FEEDBACK ONE PER UNIT condition requires a manual reset. The system switch
option is selected under the OPTIONS key, the unit will (under OPTIONS key) must be turned off and then
shut down when the voltage exceeds the programmed back on to clear the lockout fault. Fault messages will
trip voltage for 5 seconds. be displayed whenever a system is locked out.

The trip voltage is programmed at the factory accord- System Safety

ing to compressor or unit RLA.
Discharge Pressure Cutout
Restart will occur after the anti-recycle timer times out. When the operating envelope is disabled, the discharge
pressure cutout is the programmable cutout.
Unit Warning
The following messages are not unit safeties and will When the operating envelope is a standard operating
not be logged to the history buffer. They are unit warn- envelope and the suction pressure is less than 94.0
ings and will not auto-restart. Operator intervention is psig, the discharge pressure cutout will be set to 10
required to allow a restart of the chiller. psig above the discharge pressure unload limit.

! ! L O W B A T T E R Y ! ! When the operating envelope is an extended operat-

C H E C K P R O G / S E T P / O P T N ing envelope and the suction pressure is less than 42.0
psig, the discharge pressure cutout will be set to 10
psig above the discharge pressure unload limit.
The Low Battery Warning can only occur at unit pow-
er-up. On micro panel power-up, the RTC battery is The system will shut down when the discharge pres-
checked. If a low battery is found, all programmed set sure cutout, as determined above, is exceeded. The sys-
points, program values, options, time, schedule, and tem can be restarted when the discharge pressure falls
history buffers will be lost. These values will all be re- below the cutout of minus 40 psig.
set to their default values which may not be the desired
operating values. Once a faulty battery is detected, the S Y S 1 H I G H D S C H P R E S
unit will be prevented from running until the PRO- S Y S 2 H I G H D S C H P R E S
GRAM key is pressed. Once PROGRAM is pressed
7
the anti-recycle timers will be set to the programmed Suction Pressure Cutout
anti-recycle time to allow the operator time to check
set points, and if necessary, reprogram programmable The Suction Pressure Cutout protects the chiller from
values and options. an evaporator freeze-up should the system attempt to
run with a low refrigerant charge. Following are the
If a low battery is detected, it should be replaced as messages for both systems.
soon as possible. The programmed values will all be
S Y S 1 L O W S U C T P R E S S
lost and the unit will be prevented from running on the
S Y S 2 L O W S U C T P R E S S
next power interruption. The RTC/battery (031-02565-
000) is located at U5 on the microboard.
At system start, the cutout is set to 10% of programmed
I N C O R R E C T value. During the next 3 minutes the cutout point is
U N I T T Y P E ramped up to the programmed cutout point. If at any
time during the 3 minutes the suction pressure falls be-
This indicates the condensing unit jumper is installed low the ramped cutout point, the system will stop. This
between J11-12 and J11-7. This jumper must be re- cutout is completely ignored for the first 30 seconds of
moved to operate the chiller. system run time to avoid nuisance shutdowns, espe-
cially on units with a low pressure switch.

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After the first 3 minutes, if the suction pressure falls of the system exceeds the programmed voltage for 5
below the programmed cutout setting, a transient pro- seconds, the system will shut down. This fault will not
tection routine is activated. This sets the cutout at 10% be cleared until the condition is no longer present. Fol-
of the programmed value and ramps up the cutout lowing are the messages for both systems.
over the next 30 seconds. If at any time during the 30
S Y S 1 H I G H M T R C U R R
seconds the suction pressure falls below the ramped
S Y S 2 H
I G H M T R C U R R
cutout, the system will stop. This transient protection
scheme only works if the suction pressure transducer
is installed. Low Superheat Cutout (EEV Mode Only)

Motor Protector/High Pressure Cutout Fault The Low Superheat Cutout protects the compressors
from liquid flowing back due to low suction superheat.
The Motor Protector/High Pressure Cutout protects the This safety is only active when EEV is selected as the
motor from overheating or the system from experienc- expansion valve type. This safety is ignored for the
ing dangerously high discharge pressure. This fault first 15 seconds of system run time.
condition is present when CR1 (SYS 1) or CR2 (SYS
2) opens causing 0 VDC to be read on the input. The Two events can trigger this safety. The first event is
fault condition is cleared and will allow to restart the when the suction superheat is lower than 2.0°F for 3
system when a 30 VDC signal is restored to the input seconds. The second event is when the LLSV is closed
by closing CR1 or CR2. This fault will shut down the 10 times in 2 minutes due to low superheat. See the
system 0.5 seconds after the relay opens. This fault will LLSV control section for further details. Following are
only occur when a system is running. Following are the the messages for all systems.
messages for both systems.
S Y S 1 L O W S U P E R H E A T
S Y S 1 M P / H P C O F A U L T S Y S 2 L O W S U P E R H E A T
S Y S 2 M P / H P C O F A U L T

Sensor Failure Cutout (EEV Mode Only)

Motor Protector/High Pressure Cutout Inhibit The Sensor Failure Cutout prevents the EEV from run-
The Motor Protector/High Pressure Cutout Inhibit pre- ning when the sensors measuring superheat are not
vents the system from trying to start when a motor pro- functioning properly. This safety is only active when
tector is faulted or the mechanical high pressure cutout EEV is selected as the expansion valve type. This
is open. This inhibit condition is present when CR1 safety is ignored for the first 15 seconds of system run
(SYS 1) or CR2 (SYS 2) opens causing 0 VDC to be time. This safety will shut down a system if either the
read on the input. The inhibit condition is cleared and suction temperature or suction pressure sensors read
will allow to restart the system when a 30 VDC signal out of range high or low. The condition must be pres-
is restored to the input by CR1 or CR2 closing. This ent for 3 seconds, to cause a system shutdown. This
inhibit will only occur when a system is not running. safety will lock out a system the first time and will not
Following are the messages for both systems. allow automatic restarting. Following are the messages
for all systems.
S Y S 1 M P / H P C O I N H I B
S Y S 2 M P / H P C O I N H I B S Y S 1 S E N S O R F A I L U R E
S Y S 2 S E N S O R F A I L U R E

High Motor Current

Anti-Vacuum Low Pressure Cutout
When the System Current Feedback option is selected
(Option 11 under OPTIONS key Current Feedback), When the suction pressure falls below the anti-vacuum
this safety will operate as follows. If the actual voltage low pressure cutout for more than the programmed de-
lay time 3 times in 90 minutes, this safety will shut
down a system. This fault is a standard system fault.
Following are the messages for both systems.
S Y S 1 A T V S U C T P R E S S
S Y S 2 A T V S U C T P R E S S

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FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

Fault and Inhibit Codes and Reset

Table 13 shows the fault and inhibit codes and how to
reset them. There are three ways to reset the fault and
inhibit. See Table 14 for more information.

Table 13 - YLAA FAULT AND INHIBIT CODES

AUTO, 1X, 3X
CODE TYPE FAULT OR INHIBIT DESCRIPTION
(SEE LEGEND)
2 Unit Fault Low Ambient Temperature Auto
4 Unit Fault Low Leaving Chilled Liquid Temperature Auto
22 Unit Fault Unit High Motor Current (Unit Current Feedback Option) Auto
27 Unit Fault Pump Trip (Hydro Pumps 1 or Hydro Pumps 2) Auto
28 Unit Fault Pump Flow Failure (Hydro Pumps 1 or Hydro Pumps 2) 1x
29 Unit Fault High Ambient Temperature Auto
31 Unit Fault Flow Switch Open Auto
5 System Fault High Discharge Pressure (Software) 3x
7 System Fault Low Suction Pressure 3x
17 System Fault System High Motor Current (System Current Feedback option) 3x
18 System Fault Motor Protector/High Pressure (Mechanical) 3x
19 System Fault Low Evaporator Temperature (R407c Only - N/A Hp Heating Mode) 3x
23 System Fault Low Suction Superheat (EEV) 3x
24 System Fault Sensor Failure (EEV) 1x
25 System Fault Discharge Inhibit (Heat Pump heating mode only) 3x
26 System Inhibit Motor Protector/High Pressure Inhibit Auto

Table 14 - LEGEND
TYPE DEFINITION
3X Automatically restarts on the first and second fault with a lockout on the third fault in 90 minutes
7
1X Locks out on the first fault
AUTO Allows restart once meeting the required conditions

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STATUS KEY MESSAGES

General Messages Fault Messages

Unit Switch Off System Safeties Unit Safeties &

Shutdown Warning Messages

Remote Controlled System X High Disch Pressure Low Ambient Temp

Shutdown

Daily Schedule System X Low Suct Pressure Low Liquid Temp

Shutdown

Rem Stop
No Run Permissive System X MP/HPCO Inhibit 115VAC Undervoltage

Flow Switch
Open
Low Battery
System X MP/HPCO Fault
Check Prog/Step/Optn
System X Switch Off (Unit Warning Message)

System X System X HIGH MTR CURR

No Cooling load (Optional) Incorrect Unit Type
(Unit Warning Message)

System X Comps Run

System X AR Timer
High Motor Current

System X AC Timer

System X Disch Limiting

System X Suction Limiting

System X Percentage Load Limiting

Manual Overide Status

System X Pumping Down (on shutdown)

LD11297B

Figure 40 - STATUS KEY MESSAGES QUICK REFERENCE LIST

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FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

DISPLAY/PRINT KEYS

00067VIP

The Display/Print keys allow the user to retrieve sys- With the “UNIT TYPE” set as a liquid chiller (no
tem and unit information that is useful for monitoring jumper from J11-7 to J11-12 on the I/O Board), the
chiller operation, diagnosing potential problems, trou- following list of operating data screens are viewable
bleshooting, and commissioning the chiller. under the OPER DATA key in the order that they are
displayed. The ↓ (DOWN) arrow key scrolls through
System and unit information, unit options, set points, the displays in the order they appear below: 7
and scheduling can also be printed out with the use of
a printer. Both real-time and history information are The chiller MUST be set to be a liquid
available. chiller (no jumper from J11-7 to J11-12
on the I/O Board). DO NOT operate the
Oper Data Key chiller if not properly set up.
The OPER DATA key gives the user access to unit and
system operating parameters. When the OPER DATA
key is pressed, system parameters will be displayed and L C H L T = 4 6 . 2 ° F
remain on the display until another key is pressed. After R C H L T = 5 7 . 4 ° F °
pressing the OPER DATA key, the various operating
data screens can be scrolled through by using the ↑ (UP) This display shows chilled leaving and return liquid
and ↓ (DOWN) arrow keys or the ENTER/ADV key temperatures. The minimum limit on the display for
located under the “ENTRY” section. these parameters are 2.2 °F (-19 °C). The maximum
System 2 information will only be dis- limit on the display is 140 °F (60 °C).
played for 2 system units. A M B I E N T A I R T E M P
= 8 7 . 5 ° F

This display shows the ambient air temperature. The

minimum limit on the display is 0.4°F (-17.6°C). The
maximum limit on the display is 131.2°F (55.1°C).

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S Y S X S P = 7 2 . 1 P S I G C O O L I N G D E M A N D
D P = 2 2 7 . 0 P
S I G 2 O F 8 S T E P S

These displays show suction and discharge pressures The display of COOLING DEMAND indicates the
for each system. The discharge pressure transducer is current “step” in the capacity control scheme when in
optional on some models. Return Water Control Mode. The number of available
steps are determined by how many compressors are in
If the optional discharge transducer is not installed, the the unit. In the above display, the “2” does not mean
discharge pressure would display 0 PSIG (0 barg). that two compressor are running but only indicates that
The minimum limits for the display are: the capacity control scheme is on step 2 of 8. Capacity
Control is covered in more detail in this publication
• Suction Pressure: 0 psig (0 barg) which provides specific information on compressor
• Discharge Pressure: 0 psig (0 barg) staging (for Return Water Control only).

The maximum limits for the display are: T E M P E R R O R X X X . X ° F

T E M P R A T E X X X . X ° F / M
• Suction Pressure: 400 psig (27.58 barg)
• Discharge Pressure: 650 psig (44.82 barg) The COOLING DEMAND message will be replaced
with this message when Leaving Chilled liquid control
S Y S X H O U R S 1 = X X X X X
is selected. This message indicates the temperature er-
2 = X X X X X, 3 = X X X X X
ror and the rate of change of the chilled liquid tempera-
ture.
S Y S X S T A R T S 1 = X X X X X
2 = X X X X X, 3 = X X X X X L E A D S Y S T E M I S
S Y S T E M N U M B E R 2

The above two messages will appear sequentially for

each system. The first display shows accumulated run- This display indicates the current LEAD system. In
ning hours of each compressor for the specific system. this example system 2 is the LEAD system, making
The second message shows the number of starts for system 1 the LAG system. The LEAD system can be
each compressor on each system. manually selected or automatic. See the programming
under the Options Key on page 149. The Lead System
Run times and starts will only be displayed
display will only appear on a two system unit.
for the actual number of systems and
compressors on the unit. A unit utilizing hot gas bypass should be
programmed for MANUAL with system
1 as the lead system. Failure to do so
will prevent hot gas operation if system
A total of 99,999 hours and starts can be logged before 2 switches to the lead system when pro-
the counter rolls over to “0”. grammed for AUTOMATIC LEAD/LAG.

L O A D T I M E R 5 8 S E C E V A P O R A T O R H E A T E R
U N L O A D T I M E R 0 S E C S T A T U S I S = X X
X

This display of the load and unload timers indicate This display indicates the status of the evaporator
the time in seconds until the unit can load or unload. heater. The evaporator heater is controlled by ambient
Whether the systems loads or unloads is determined by air temperature. When the ambient temperature drops
how far the actual liquid temperature is from set point. below 40°F the heater is turned ON. When the tem-
A detailed description of unit loading and unloading is perature rises above 45°F the heater is turned OFF. An
covered under the topic of Capacity Control. under voltage condition will keep the heater OFF until
full voltage is restored to the system.

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E V
A P
O R
A T
O R W A T
E R S Y S X C O M P S T A T U S
P U
M P S T A T
U S = X
X X
X 1 = X X X 2 = X X X 3 = X X X

The evaporator pump dry contacts are energized when S Y S X R U N T I M E

any compressor is running, or the unit is not OFF on X X - X X - X X - X X D - H - M - S
the daily schedule and the unit switch is ON, or the unit
has shutdown on a Low Leaving Chilled Liquid fault. S Y S X L L S V I S O N
However, even if one of above is true, the pump will H O T G A S S O L I S O F F
not run if the micro panel has been powered up for less
than 30 seconds or if the pump has run in the last 30
S Y S X F A N S T A G E 3
seconds to prevent pump motor overheating.

E V A P P U M P T O T A L R U N
H O U R S = X X X X X S Y S X A M P S = 3 6 . 0
V O L T S = 0 . 8
The Evaporator Pump Total Run Hours display indi-
cates the total pump run hours. Total hours continu- The preceding five messages will appear sequentially,
ally increments similar to Compressor Run Hours. If first for system 1, then for system 2.
dual pumps are fitted, run hours indicates total hours The first message indicates the system and the associ-
on both pumps. ated compressors which are running.
A C T I V E R E M O T E C T R L The second message indicates the system run time in
N O N E days – hours – minutes – seconds. Please note that this
is not accumulated run time but pertains only to the
There are several types of remote systems that can be current system cycle.
used to control or monitor the unit. The following mes- The third message indicates the system, and whether
sages indicate the type of remote control mode active: the liquid line solenoid or EEV pilot solenoid and hot
gas solenoid are being turned ON by the microboard.
NONE – no remote control active. Remote monitoring
Please note that hot gas is not available for system 2, so
may be via ISN. there is no message pertaining to the hot gas solenoid 7
ISN – YORK Talk via ISN allows remote load limiting when system 2 message is displayed.
and temperature reset through an ISN system. The fourth message indicates the stage of condenser
LOAD LIM – Load limiting enabled using contact clo- fan operation that is active.
sure. See Standard Condenser Fan Control on page 176 for
PWM TEMP – EMS temperature reset more information.

*See Remote BAS/EMS Temperature Reset Using The fifth message displays current as sensed by the op-
a Voltage or Current Signal on page 181. tional current feedback circuitry. The display reads out
in amps along with the DC feedback voltage from the
If the microprocessor is programmed for CURRENT module. Current is calculated by:
FEEDBACK ONE PER UNIT under the OPTIONS
225 A x Actual Volts
key, the display will show up as the first display before
the SYS 1 displays. Total chiller current is displayed as 5 Volts
shown below:
Individual displays will be present for each system, if
U N I T A M P S = 5 4 . 0
CURRENT FEEDBACK ONE PER SYSTEM is pro-
V O L T S = 1 . 2
grammed under the OPTIONS key. Combined com-
pressor current for each system is displayed.
If the microprocessor is programmed for CURRENT
FEEDBACK NONE, no current display will appear.

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Oper Data Quick Reference List Print Key

The following table is a quick reference list for infor- The PRINT key allows the operator to obtain a printout
mation available under the OPER DATA key. of real-time system operating data or a history print-
out of system data at the “instant of the fault” on the
last six faults which occurred on the unit. An optional
printer is required for the printout.
Oper Data Key
Operating Data Printout
Pressing the PRINT key and then OPER DATA key
Leaving & Chilled Liquid Temps
allows the operator to obtain a printout of current sys-
tem operating parameters. When the OPER DATA key
Ambient Air Temperature
is pressed, a snapshot will be taken of system operat-
ing conditions and panel programming selections. This
System 1 Discharge & Suction Pressure
data will be temporarily stored in memory and trans-
mission of this data will begin to the printer. A sample
*System X Accumulated Hours Operating Data printout is shown below. (Note: Not all
values are printed for all models.)
*System X Accumulated Starts
YORK INTERNATIONAL CORPORATION
Load and Unload Timers MILLENNIUM LIQUID CHILLER
UNIT STATUS
2:04PM 01 OCT 07
Cooling Demand Steps SYS 1 NO COOLING LOAD
(Return Chilled Liquid Control Only) SYS 2 COMPRESSORS RUNNING 2
OPTIONS
CHILLED LIQUID WATER
Temp Rate & Temp Error AMBIENT CONTROL STANDARD
(Leaving Chilled Liquid Control Only) LOCAL/REMOTE MODE REMOTE
CONTROL MODE LEAVING LIQUID
LEAD/LAG CONTROL AUTOMATIC
Lead System Indicator FAN CONTROL AMB & DSCH PRESS
CURRENT FEEDBACK NONE
Evaporator Heater Status POWER FAILURE RESTART AUTOMATIC
SOFT START ENABLED
EXPANSION VALVE THERMOSTATIC
Evaporator Water Pump Status REMOTE TEMP RESET 4 TO 20 MA
PROGRAM VALUES
DSCH PRESS CUTOUT 570 PSIG
Active Remote Control SUCT PRESS CUTOUT 80 PSIG
SUCT PRESS CUT COOLING 42 PSIG
Current Feedback One Per Unit SUCT PRESS CUT HEATING 31 PSIG
LOW AMBIENT CUTOUT 25.0 DEGF
LEAVING LIQUID CUTOUT 25.0 DEGF
*System X Compressors Status ANTI RECYCLE TIME 600 SECS
FAN CONTROL ON PRESS 425 PSIG
FAN DIFF OFF PRESS 125 PSIG
*System X Run Time NUMBER OF COMPRESSORS 6
NUMBER OF FANS PER SYSTEM 4
* Sys X LLSV & HGSV Status UNIT TRIP VOLTS 3.0
REFRIGERANT TYPE R-22
DEFROST INIT TEMP 41.0 DEGF
*System X Condenser Fan Stage DEFROST INITIATION TIME 60MIN
DEFROST TERMINATION TIME 3MIN
BIVALENT HEAT DELAY TIME 30 MIN
Current Feedback One Per System REMOTE UNIT ID PROGRAMMED 2
YORK HYDRO KIT PUMPS 1 (410a)
* Block of information repeats for each system LD12585
PUMP TOTAL RUN HOURS XXXXX (410a)
UNIT DATA
RETURN LIQUID TEMP 58.2 DEGF
Figure 41 - OPERATION DATA LEAVING LIQUID TEMP 53.0 DEGF
DISCHARGE AIR TEMP 55.3 DEGF

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See Optional Printer Installation on page

COOLING RANGE 42.0 +/- 2.0 DEGF 193 for Printer Installation information.
HEATING RANGE 122.0 +/- 2.0 DEGF
SYS 1 SETPOINT 70 +/- 3 PSIG
SYS 2 SETPOINT 70 +/- 3 PSIG
REMOTE SETPOINT 44.0 DEGF
AMBIENT AIR TEMP 74.8 DEGF
LEAD SYSTEM SYS 2
EVAPORATOR PUMP ON History Printout
EVAPORATOR HEATER OFF
ACTIVE REMOTE CONTROL NONE Pressing the PRINT key and then the HISTORY key
LAST DEFROST SYS X DURATION XXXS allows the operator to obtain a printout of information
TIME TO SYS X DEFROST XX MIN relating to the last 9 Safety Shutdowns which occurred.
BIVALENT DELAY REMAINING XX MIN
UNIT XXX.X AMPS X.X VOLTS The information is stored at the instant of the fault, re-
SOFTWARE VERSION C.M02.13.00 gardless of whether the fault caused a lockout to occur.
SYSTEM 1 DATA The information is also not affected by power failures
COMP STATUS 1=OFF 2=OFF 3=OFF
RUN TIME 0- 0- 0- 0 D-H-M-S (long-term internal memory battery backup is built into
TIME YYYYYYY 0- 0- 0- 0 D-H-M-S the circuit board) or manual resetting of a fault lock-
LAST STATE YYYYYYY out.
SUCTION PRESSURE 105 PSIG
DISCHARGE PRESSURE 315 PSIG When the HISTORY key is pressed, a printout is trans-
SUCTION TEMPERATURE 46.0 DEGF
SAT SUCTION TEMP 34.0 DEGF mitted of all system operating conditions which were
SUCTION SUPERHEAT 12.0 DEGF stored at the “instant the fault occurred” for each of the
COOLER INLET REFRIG 31.6 DEGF 9 Safety Shutdowns buffers. The printout will begin
DEFROST TEMPERATURE 52.8 DEGF
LIQUID LINE SOLENOID OFF with the most recent fault which occurred. The most
MODE SOLENOID OFF recent fault will always be stored as Safety Shutdown
HOT GAS BYPASS VALVE OFF No. 1. identically formatted fault information will then
CONDENSER FAN STAGE OFF
EEV OUTPUT 0.0 % be printed for the remaining safety shutdowns.
SYSTEM XXX.X AMPS X.X VOLTS
SYSTEM 2 DATA Information contained in the Safety Shutdown buffers
COMP STATUS 1=ON, 2=OFF, 3=ON is very important when attempting to troubleshoot a
RUN TIME 0-0-1-46 D-H-M-S system problem. This data reflects the system condi-
TIME YYYYYYY 0-0-0-0 D-H-M-S
LAST STATE
SUCTION PRESSURE
YYYYYYY
110 PSIG
tions at the instant the fault occurred and often reveals 7
other system conditions which actually caused the
DISCHARGE PRESSURE 320 PSIG safety threshold to be exceeded.
SUCTION TEMPERATURE 49.3 DEGF
SAT SUCTION TEMP 36.0 DEGF
SUCTION SUPERHEAT 13.3 DEGF The history printout is similar to the operational data
COOLER INLET REFRIG 31.6 DEGF printout shown in the previous section. The differences
DEFROST TEMPERATURE 52.8 DEGF are in the header and the schedule information. The
LIQUID LINE SOLENOID ON
MODE SOLENOID ON daily schedule is not printed in a history print.
CONDENSER FAN STAGE 3
EEV OUTPUT 63.2% One example history buffer printout is shown follow-
SYSTEM XXX.X AMPS X.X VOLTS ing. The data part of the printout will be exactly the
DAILY SCHEDULE same as the operational data print so it is not repeated
S M T W T F S *=HOLIDAY
SUN START=00:00AM STOP=00:00AM here. The difference is that the Daily Schedule is not
MON START=00:00AM STOP=00:00AM printed in the history print and the header will be as
TUE START=00:00AM STOP=00:00AM follows.
WED START=00:00AM STOP=00:00AM
THU START=00:00AM STOP=00:00AM
FRI START=00:00AM STOP=00:00AM YORK INTERNATIONAL CORPORATION
SAT START=00:00AM STOP=00:00AM
HOL START=00:00AM STOP=00:00AM MILLENNIUM LIQUID CHILLER
SAFETY SHUTDOWN NUMBER 1
SHUTDOWN @ 3:56PM 29 SEP 07
SYS 1 HIGH DSCH PRESS SHUTDOWN
SYS 2 NO FAULTS

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History Displays C O N T R O L M O D E
The HISTORY key gives the user access to many unit L E A V I N G L I Q U I D
and system operating parameters at the time of a unit
or system safety shutdown. When the HISTORY key is Displays the type of chilled liquid control; Leaving or
pressed the following message is displayed. Return.
D I S P L A Y S A F E T Y S H U T- L E A D / L A G C O N T R O L
D O W N N O . 1 ( 1 T O 9 ) X X X X X X X X

While this message is displayed, the ↑ (UP) arrow key Displays the type of lead/lag control; Manual System
can be used to select any of the six history buffers. Buf- 1, Manual System 2 or Automatic. This is only select-
fer number 1 is the most recent, and buffer number 6 is able on 2-system chillers.
the oldest safety shutdown that was saved.
F A N C O N T R O L
After selecting the shutdown number, pressing the EN- D I S C H A R G E P R E S S U R E
TER key displays the following message which shows
when the shutdown occurred.
Displays the type of fan control; Discharge Pressure or
S H U T D O W N O C C U R R E D Ambient and Discharge Pressure.
0 3 : 5 6 P M 2 9 J A N 0 2
M A N U A L O V E R R I D E M O D E
X X X X X X X X X
The ↑ (UP) and ↓ (DOWN) arrow keys are used to
scroll forward and backward through the history buffer
Displays whether Manual Override was Enabled or
to display the shutdown conditions stored at the instant
Disabled.
the fault occurred. The ↓ (DOWN) arrow key scrolls
through the displays in the order they appear below: C U R R E N T F E E D B A C K
X X X X X X X X X X X X X X X X
U N I T F A U L T :
L O W L I Q U I D T E M P
Displays type of Current Feedback utilized.
Displays the type of fault that occurred. S O F T S T A R T
X X X X X X X
U N I T T Y P E
L I Q U I D C H I L L E R
Displays whether the optional European Soft Start was
installed and selected.
Displays the type of chiller; Liquid, Condensing Unit
or Heat Pump. D I S C H A R G E P R E S S U R E
C U T O U T = X X X X P S I G
C H I L L E D L I Q U I D
X X X X X
Displays the programmed Discharge Pressure Cutout.
Displays the chilled liquid type; Water or Glycol. S U C T I O N P R E S S U R E
C U T O U T = X X X X P S I G
A M B I E N T C O N T R O L
X X X X X X X X X X
Displays the programmed Suction Pressure Cutout.
Displays the type of Ambient Control; Standard or L O W A M B I E N T T E M P
Low Ambient. C U T O U T = X X X . X ° F

L O C A L / R E M O T E M O D E
X X X X X X X X X Displays the programmed Low Ambient Cutout.

Displays Local or Remote control selection.

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L E A V I N G L I Q U I D T E M P L E A D S Y S T E M I S
C U T O U T = X X X . X ° F S Y S T E M N U M B E R X

Displays the Leaving Liquid Temp. Cutout pro- Displays which system is in the lead at the time of the
grammed. fault.
F A N C O N T R O L O N E V A P O R A T O R H E A T E R
P R E S S U R E = X X X P S I G S T A T U S I S X X
X

Displays the programmed Fan On Pressure. Displays status of the Evaporator Heater at the time of
the fault.
F A N D I F F E R E N T I A L O F F
P R E S S U R E = P S I G E V A P O R A T O R W A T E R
P U M P S T A T U S X X
X X
Displays the programmed Fan Off Differential.
Displays status of Evaporator Water Pump at the time
S Y S 1 T R I P V O L T S
of fault. Status may read ON, OFF or trip.
= X . X V O L T S
E V A P P U M P T O T A L R U N
Displays the programmed High Current Trip Voltage. H O U R S = X X X X

S Y S 2 T R I P V O L T S
Evap Pump total run hours at the time of fault.
= X . X V O L T S
A C T I V E R E M O T E C T R L
Displays the programmed High Current Trip Voltage. X X X X

Y O R
K H Y
D R
O
Displays whether Remote Chiller Control was active
K I T P
U M
P S = X
when the fault occurred.

Indicates the Pump Control option is selected. U N I T A C T U A L A M P S

= X X X . X A M P S
7
L C H L T = X X X . X ° F
R C H L T = X X X . X ° F
This is only displayed when the Current Feedback Op-
tion is one per unit.
Displays the Leaving and Return chilled Liquid Tem-
perature at the time of the fault. S Y S X C O M P S T A T U S
1 = X X X 2 = X X X 3 = X X X
S E T P O I N T = X X X . X ° F
R A N G E = + / - ° F
Displays which Compressors were running in the sys-
tem when the fault occurred.
Displays the programmed Set Point and Range, if the
chiller is programmed for leaving chilled liquid control. S Y S X R U N T I M E
X X - X X - X X - X X D - H - M - S
S E T P O I N T = X X X . X ° F
R A N G E = + X X . X ° F
Displays the system run time when the fault occurred.

Displays the programmed Set Point and Range, if the S Y S X S P = X X X X P S I G

chiller is programmed for return chilled liquid control. D P = X X X X P S I G

A M B I E N T A I R T E M P
Displays the system Suction and Discharge Pressure of
= X X X . X ° F
the time of the fault.

Displays the Ambient Temp. at the time of the fault.

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S Y S X S U C T = X X X . X ° F der the PROGRAM key, the display will be the first

S A T S U C T = X X X . X ° F display before the SYS 1 info. If the microprocessor is
programmed for CURRENT FEEDBACK NONE, no
current display will appear.
Displays the System Suction Temp and Saturated Suc-
tion Temp when an EEV is installed. Displays for System 1 starting with SYS X NUMBER
OF COMPS RUNNING X through SYS X AMPS =
S Y S X L L S V I S X X X
XXX.X VOLTS = X.X will be displayed first, fol-
H O T G A S S O L I S X X X
lowed by displays for System 2.

Displays whether the System Liquid Line Solenoid or Further explanation of the above displays is covered
Hot Gas Solenoid was energized at the time of the fault. under the STATUS, OPER DATA, COOLING SET
POINTS, PROGRAM, and OPTIONS keys.

S Y S X F A N S T A G E X X X
Software Version
The software version may be viewed by first pressing
Displays the number of Fan Stages in the system active the HISTORY key and then repeatedly pressing the ↓
at the time of the fault. (DOWN) arrow key until you scroll past the first his-
tory buffer choice.
S Y S X A
C T U A L A M P S
= X
X X . X A M
P S D I S P L A Y S A F E T Y S H U T -
D O W N N O . 1 ( 1 T O 6 )
Displays the system Amperage (calculated approxi-
mately) at the time of the fault. After the ↓ (DOWN) arrow key is pressed again, the
software version will appear.
For this message to appear, CURRENT FEEDBACK
ONE PER SYSTEM must be programmed under the C O N T R O L C. M X X. Z Z. Y Y
OPTIONS key. If the microprocessor is programmed I / O C. M X X. 1 8. Y Y
as one CURRENT FEEDBACK ONE PER UNIT un-

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ENTRY KEYS

00068VIP

The Entry Keys allows the user to view, change pro- Enter/Adv Key
grammed values. The ENTRY keys consist of an ↑ (UP) The ENTER/ADV key must be pushed after any change
arrow key, ↓ (DOWN) arrow key, and an ENTER/ADV is made to the cooling set points, daily schedule, safety
key. set points, chiller options, and the clock. Pressing this
key “enters” the new values into memory. If the EN-
Up and Down Arrow Keys
TER/ADV key is not pressed after a value is changed,
Used in conjunction with the OPER DATA, HISTORY, the changes will not be “entered” and the original val-
COOLING SET POINTS, SCHEDULE/ADVANCE ues will be used to control the chiller.
DAY, OPTIONS, and CLOCK keys, the ↑ (UP) and
↓(DOWN) arrow keys allow the user to scroll through Programming and a description on the use of the ↑ (UP)
the various data screens. See Display/Print Keys on arrow key, and ↓ (DOWN) arrow, and ENTER/ADV
page 131 for specific information on the displayed keys are covered in detail under the SET POINTS, and
information and specific use of the ↑ (UP) and ↓ UNIT keys.
(DOWN) arrow keys.
The ↑ (UP) arrow key, and ↓ (DOWN) arrow key are
also used for programming the control panel such as
changing numerical or text values when programming
cooling set points, setting the daily schedule, changing
safety set points, chiller options, and setting the clock.

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SET POINTS KEYS

00069VIP

Programming of the cooling set points, daily schedule, Leaving Chilled Liquid Control
and safeties is accomplished by using the keys located S E T P O I N T = 4 5 . 0 ° F
under the SET POINTS section. R A N G E = +/- 2 . 0 ° F
The three keys involved are labeled COOLING SET
POINTS, SCHEDULE/ADVANCE DAY, and PRO- The above message shows the current chilled water
GRAM. temperature SET POINT at 45.0°F (notice the cursor
positioned under the number 0). Pressing either the ↑
Following are instructions for programming the respec- (UP) or ↓ (DOWN) arrow will change the set point in
tive set points. The same instruction should be used to 0.5°F increments. After using the ↑ (UP) or ↓ (DOWN)
view the set points with the exception that the set point arrow keys to adjust to the desired set point, the EN-
will not be changed. TER/ADV key must be pressed to enter this number
into memory and advance to the RANGE SET POINT.
Cooling Set Points
The Cooling Set Point and Range can be programmed Entry of the set point will be indicated by the cursor
by pressing the COOLING SET POINTS key. The moving under the current RANGE set point. The ↑ (UP)
cooling mode (leaving chilled liquid or return chilled and ↓ (DOWN) arrow keys are used to set the RANGE,
liquid) will be displayed for a few seconds, and the set in 0.5°F increments, to the desired RANGE set point.
point display entry screen will appear. After adjusting the set point, the ENTER/ADV key
must be pressed to enter the data into memory.
Notice that the RANGE was programmed for
+/- X.X°F. This indicates the SET POINT to be in the

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center of the control range. If the control mode has The following messages illustrate both leaving chilled
been programmed for RETURN LIQUID control, the liquid control and return chilled liquid control respec-
message below would be displayed in place of the pre- tively.
vious message.
R E M S E T P = 4 4 . 0 ° F
When in leaving chilled liquid temperature control, the R A N G E = + / - 2 . 0 ° F
microprocessor will attempt to control the leaving wa-
ter temperature within the temperature range of the set (leaving chilled liquid control)
point + or – the range. In the above example, control
will be in the range of 43°F to 47°F. R E M S E T P = 4 4 . 0 ° F
R A N G E = + 1
0 . 0 ° F
Return Chilled Liquid Control

S E T P O I N T = 4 5 . 0 ° F (return chilled liquid control)
R A N G E = + 1 0 . 0 ° F
The low limit, high limit, and default values for the
keys under “SET POINTS” are listed in Table 23 on
In return chilled liquid control, the range no longer has page 173.
a +/- X.X°F, but only a + X.X°F RANGE set point.
This indicates that the set point is not centered within Pressing the COOLING SET POINTS a third time will
the RANGE but could be described as the bottom of bring up the display that allows the Maximum EMS-
the control range. A listing of the limits and the pro- PWM Temperature Reset to be programmed. This
grammable values for the COOLING SET POINTS message is shown below.
are shown in Table 23 on page 173.
M A X E M S - P W M R E M O T E
The SET POINT and RANGE displays just described T E M P R E S E T = + 2 0 ° F
were based on LOCAL control. If the unit was pro-
grammed for REMOTE control (under the OPTIONS The Temp Reset value is the maximum allowable re-
key), the above programmed set points would have no mote reset of the temperature set point. The set point
effect. can be reset upwards by the use of an Energy Man-
When in return chilled liquid temperature control, the agement System or from the Temperature Reset Op-
tion Board. See Remote BAS/EMS Temperature Reset
microprocessor will turn all compressors OFF at set
Using a Voltage or Current Signal on page 181 for a
7
point and will turn compressors ON as return chilled
liquid temperature rises. All compressors will be on at detailed explanation of this feature.
set point plus the range. If the range equals the tem- As with the other set points, the ↑ (Up) arrow and ↓
perature drop across the evaporator when fully loaded, (Down) arrow keys are used to change the Temp Reset
the leaving chilled liquid temperature will remain near value. After using the ↑ (UP) and ↓ (DOWN) arrows to
the set point plus or minus a few degrees as the chiller adjust to the desired set point, the ENTER/ADV key
loads and unloads according to return chilled liquid must be pressed to enter this number into memory.
temperature.
SCHEDULE/ADVANCE DAY KEY
Both LEAVING and RETURN control are described in
detail under Capacity Control on page 171. The SCHEDULE is a seven day daily schedule that
allows one start/stop time per day. The schedule can
Remote Set Point Control be programmed Monday through Sunday with an al-
Pressing the COOLING SET POINTS key a second ternate holiday schedule available. If no start/stop
time will display the remote set point and cooling times are programmed, the unit will run on demand,
range. This display automatically updates about every providing the chiller is not shut off on a unit or system
2 seconds. Notice that these set points are not “locally” shutdown. The daily schedule is considered “not pro-
programmable, but are controlled by a remote device grammed” when the times in the schedule are all zeros
such as an ISN control, remote reset option board, or (00:00 AM).
remote PWM signal. These set points would only be To set the schedule, press the SCHEDULE/ADVANCE
valid if the unit was operating in the REMOTE mode. DAY key. The display will immediately show the fol-
lowing display.

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Table 15 - COOLING SET POINT, PROGRAMMABLE LIMITS, AND DEFAULTS

SET POINT KEY MODE LOW LIMIT HIGH LIMIT DEFAULT
40.0°F **70.0°F 44.0°F
WATER COOLING
4.4°C 21.1°C 6.7°C
10.0°F **70.0°F 44.0°F
LEAVING CHILLED LIQUID SET POINT GLYCOL COOLING*
-12.2°C 21.1°C 6.7°C
LOW TEMPERATURE 8.5°F 70.0°F 44.0°F
GLYCOL COOLING -13.1°C 21.1°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
40.0°F 70.0°F 44.0°F
WATER COOLING
4.4°C 21.1°C 6.7°C
RETURNED CHILLED LIQUID SET POINT
10.0°F 70.0°F 44.0°F
GLYCOL COOLING*
-12.2°C 21.1°C 6.7°C
4.0°F 20.0°F 10.0°F
RETURN CHILLED LIQUID CONTROL RANGE —
2.2°C 11.1°C 5.6°C
MAX EMS-PWM REMOTE TEMPERATURE 2°F 40°F 20°F
—
RESET 1.0°C 22.0°C 11.0°C

* Refer to the Engineering Guide for operation below 30°F (-1.1°C). Alternate thermal expansion valves must be used below 30°F (-1.1°C).
*When using glycol, Leaving Chilled Liquid Set Point should not be set below 20°F (-6.7°C).
**Do not exceed 55°F (12.8°C) set point before contacting the nearest Johnson Controls Office for application guidelines.

M
O N S T A R T = 0 0 : 0 0 A M After SUN (Sunday) schedule appears on the display
S T O P = 0 0 : 0 0 A M a subsequent press of the SCHEDULE/ADVANCE
DAY key will display the Holiday schedule. This is a
two part display. The first reads:
The line under the 0 is the cursor. If the value is wrong,
it may be changed by using the ↑ (UP) and ↓ (DOWN) H O L S T A R T = 0 0 : 0 0 A M
arrow keys until correct. Pressing the ENTER/ADV S T O P = 0 0 : 0 0 A M
key will enter the times and then move the cursor to
the minute box. The operation is then repeated if nec- The times may be set using the same procedure as de-
essary. This process may be followed until the hour, scribed above for the days of the week. After chang-
minutes, and meridian (AM or PM) of both the START ing the meridian of the stop time, pressing the ENTER/
and STOP points are set. After changing the meridian ADV key will advance the schedule to the following
of the stop time, pressing the ENTER/ADV key will display:
advance the schedule to the next day.
S __
M T W T F S
Whenever the daily schedule is changed H O L I D A Y N O T E D B Y *
for Monday, all the other days will change
to the new Monday schedule. This means
if the Monday times are not applicable The line below the empty space next to the S is the
for the whole week then the exceptional cursor and will move to the next empty space when
days would need to be reprogrammed to the ENTER/ADV key is pressed. To set the Holiday,
the desired schedule. the cursor is moved to the space following the day of
the week of the holiday and the ↑ (UP) arrow key is
To page to a specific day, press the SCHEDULE/AD- pressed. An * will appear in the space signifying that
VANCE DAY key until the desired day appears. The day as a holiday. The * can be removed by pressing the
start and stop time of each day may be programmed ↓ (DOWN) arrow key.
differently using the ↑ (UP) and ↓ (DOWN) arrow, and
ENTER/ADV keys. The Holiday schedule must be programmed weekly –
once the Holiday schedule runs, it will revert to the
normal daily schedule.

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PROGRAM KEY The LOW AMBIENT TEMP CUTOUT allows the user
to select the chiller outside ambient temperature cutout
There are several operating parameters under the PRO-
point. If the ambient falls below this point, the chiller
GRAM key that are programmable. These set points
will shut down. Restart can occur when temperature
can be changed by pressing the PROGRAM key, and
rises 2°F (1.11°C) above the cutout set point.
then the ENTER/ADV key to enter Program Mode.
Continuing to press the ENTER/ADV key will display L E A V I N G L I Q U I D T E M P
each operating parameter. While a particular parameter C U T O U T = 3 6 . 0 ° F
is being displayed, the ↑ (UP) and ↓ (DOWN) arrow
keys can be used to change the value. After the value is
The LEAVING LIQUID TEMP CUTOUT protects
changed, the ENTER/ADV key must be pressed to en-
the chiller from an evaporator freeze-up. Anytime the
ter the data into memory. Table 16 on page 145 shows
leaving chilled liquid temperature drops to the cutout
the programmable limits and default values for each
point, the chiller shuts down. Restart will be permitted
operating parameter.
when the leaving chilled liquid temperature rises 2°F
Following are the displays for the programmable val- (1.11°C) above the cutout set point.
ues in the order they appear:
When water cooling mode is programmed (OPTIONS
d D I S C H A R G E P R E S S U R E key), the value is fixed at 36.0°F (2.22°C) and cannot
C U T O U T = 3 9 5 P S I G be changed. Glycol cooling mode can be programmed
to values listed in Table 16 on page 145.
DISCHARGE PRESSURE CUTOUT is the discharge A N T I R E C Y C L E T I M E R
pressure at which the system will shutdown as moni- = 6 0 0 S E C
tored by the optional discharge transducer. This is a
software shutdown that acts as a backup for the me-
The programmable anti-recycle timer assures that sys-
chanical high pressure switch located in the refrigerant
tems do not short cycle, and the compressor motors
circuit. The system can restart when the discharge pres-
have sufficient time to dissipate heat after a start. This
sure drops 40 psig (2.76 barg) below the cutout point.
timer is programmable under the PROGRAM key be-
If the optional discharge pressure transducer is not in- tween 300 seconds and 600 seconds. Whenever pos-
stalled, this programmable safety would not apply. It sible, to reduce cycling and motor heating, the anti-re-
should be noted that every system has a mechanical cycle timer should be adjusted as high as possible. The 7
high pressure cutout that protects against excessive programmable anti-recycle timer starts the timer when
high discharge pressure regardless of whether or not the first compressor in a system starts. The timer be-
the optional discharge pressure is installed. gins to count down. If all the compressors in the circuit
cycle OFF, a compressor within the circuit will not be
S U C T I O N P R E S S U R E permitted to start until the anti-recycle timer has timed
C U T O U T = 80 . 0 P S I G out. If the lead system has run for less than 5 minutes,
3 times in a row, the anti-recycle timer will be extended
The SUCTION PRESSURE CUTOUT protects the to 10 minutes, if currently programmed for less than 10
chiller from an evaporator freeze-up. If the suction minutes.
pressure drops below the cutout point, the system will
F A N C O N T R O L O N
shut down. Typically, the cutout should be set to 80
P R E S S U R E = X X X P S I G
psig (5.52 bar) form water cooling.
There are some exceptions when the suc-
The Fan Control On Pressure is the programmed pres-
tion pressure is permitted to temporarily
sure value that is used to stage the condenser fans on, in
drop below the cutout point. Details are
relation to discharge pressure. See Standard Condens-
explained under the topic of SYSTEM
er Fan Control on page 176 in SECTION 7 – UNIT
SAFETIES.
CONTROLS and Table 26 on page 178 and Table 27
on page 179.
L O W A M B I E N T T E M P
C U T O U T = 2 5 . 0 ° F

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F A N D I F F E R E N T I A L O F F System Trip Volts

P R E S S U R E = X X X P S I G For individual system high current trip programming
on chillers:
The Fan Differential Off Pressure is the programmed
• Add the sum of the compressor and fan RLA’s in
differential pressure value that is used to stage the
the system
condenser fans OFF, in relation to discharge pressure.
See Standard Condenser Fan Control on page 176 • Multiply the sum by 1.25
in SECTION 8 – UNIT OPERATION and Table 26 on
• Divide by 225 A
page 178 and Table 27 on page 179.
• The resulting voltage is the value that should be
T O T A L N U M B E R O F
programmed
C O M P R E S S O R S = 6
For example, if fan and compressor RLA’s total 100 A:
The TOTAL NUMBER OF COMPRESSORS is the 5 V x 100 A 625 VA
x 1.25 = = 2.8 V
total quantity of compressors in the chiller, and deter- 225 A 225 A
mines the stages of cooling available. Note in Table
16, the chiller may have single or dual systems. Single The programmed value will be 2.8 V. A similar calcula-
system units can have 2 or 3 compressors, while dual tion and programming will be necessary for the other
system units may have 4 or 6 compressors. system in a 2-system chiller.
This MUST be programmed correctly to Unit Trip Volts
assure proper chiller operation.
For total chiller high current trip programming on
460VAC chillers:
• Add the sum of all the compressors and fan RLA’s
in the chiller
N U
M B
E R O
F F
A N
S
• Multiply the sum by 1.25
P E
R S Y
S T
E M = X
• Divide by 225 A
The Number of Fans Per System must be programmed • The resulting voltage is the value that should be
as needed to match the number of fans on each system. programmed
S Y S X T R I P V O L T S For example, if fan and compressor RLA’s total 180 A:
= X . X V O L T S
5 V x 180 A 1125 VA
x 1.25 = = 5.0 V
225 A 225 A
U N I T T R I P V O L T S
= X . X V O L T S The programmed value will be 5.0 V.
R
E M O T E U N I T I D
Depending on the option, the trip voltage for a P R O G R A M M E D = X
specific system or unit high current trip can be
programmed. It also calibrates the current read-
When communications is required with a BAS or Op-
out under the OPER DATA key. The approximate
tiView Panel, individual unit IDs are necessary for
programmed value is calculated using the following
communications with specific chillers on a single RS-
formulas.
485 line. ID 0 - 7 is selectable.

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Table 16 - PROGRAM KEY LIMITS AND DEFAULT

PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT
325 psig 575 psig 570 psig
DISCHARGE PRESSURE CUTOUT —
22.40 barg 39.60 barg 39.30 barg
80 psig 120 psig 80 psig
WATER COOLING
5.52 barg 8.27 barg 5.52 barg
SUCTION PRESSURE CUTOUT
33 psig 120 psig 44 psig
GLYCOL COOLING
2.28 barg 8.27 barg 3.03 barg
25.0°F 60.0°F 25.0°F
STANDARD AMBIENT
-3.9°C 15.6°C -3.9°C
0.0°F 60.0°F 25.0°F
LOW AMBIENT
-17.8°C 15.6°C -3.9°C
LOW AMBIENT TEMP. CUTOUT
-10.0°F 60.0°F 25.0°F
VSD FAN
-23.3°C 15.6°C -3.9°C
0.0°F 60.0°F 25.0°F
ALL OTHER CONFIGURATIONS
-17.8°C 15.6°C -3.9°C
36°F
WATER COOLING — —
2.2°C
LEAVING CHILLED LIQUID 8.0°F 36.0°F 36.0°F
GLYCOL COOLING
TEMP. CUTOUT -13.3°C 2.2°C 2.2°C
LOW TEMPERATURE -1.0°F 36.0°F 36.0°F
GLYCOL COOLING -18.3°C 2.2°C 2.2°C
ANTI-RECYCLE TIMER — 300 s 600 s 600 s
360 psig 485 psig 385 psig
FAN CONTROL ON PRESSURE —
24.80 barg 33.40 barg 26.50 barg
80 psid 160 psid* 125 psid
FAN DIFFERENTIAL OFF PRESSURE —
5.51 bard 11.03 bard* 8.62 bard
SINGLE SYSTEM 2 3 3
7
TOTAL NUMBER OF COMPRESSORS
DUAL SYSTEM 4 6 6
NUMBER OF FANS PER SYSTEM — 2 4 3
UNIT/SYSTEM TRIP VOLTS CURRENT FEEDBACK 0.5 V 4.5 V 2.5 V
REMOTE UNIT ID — 0 7 0
SYSTEM 1 AND SYSTEM 2 5.0°F 18.0°F 9.0°F
R-410a
SUPERHEAT SET POINTS 2.8°C 10.0°C 5.0°C
DUTY/STANDBY PUMP CHANGE OVER R-410a 1 30 30
3 psig 20 psig 10%
ANTI-VACUUM SUCTION PRESSURE
R-410a programmed
CUTOUT 0.21 barg 1.38 barg suction cutout
ANTI-VACUUM DELAY TIME R-410a 3s 30 s 6s
247 psig 345 psig 247 psig
VSD FAN LOW PRESSURE LIMIT R-410a
17.03 barg 23.78 barg 17.03 barg
350 psig 450 psig 450 psig
VSD FAN HIGH PRESSURE LIMIT R-410a
24.13 barg 31.03 barg 31.03 barg
VSD FAN LOW AMBIENT DISCHARGE 360 psig 420 psig 390 psig
R-410a
PRESSURE SET POINT 24.82 barg 28.96 barg 26.89 barg
VSD FAN LOW AMBIENT DISCHARGE 60 psig 120 psig 90 psig
R-410a
PRESSURE CONTROL RANGE 4.14 barg 8.27 barg 6.21 barg

* T
 he minimum discharge pressure allowed is 235 psig. The Fan Differential Off Pressure High Limit will be lowered (reduced) to prevent go-
ing below 235 psig based on where the fan control On Pressure is programmed.
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Quick Reference Programming Chart

Setpoints Section

Cooling Setpoints Key Schedule/ Program Mode

(press key to adv.) Advance Day Key (press enter to adv.)

Local Leaving Mon. – Sun. Discharge

Water Temp Control & Pressure
(Display Only) Holiday Cutout
Schedule

Chilled Liquid Suction

Setpoint Pressure
& Cutout
Range

Remote Setpoint Low Ambient Temp.

& Cutout
Range
(Display Only)

Leaving Liquid
EMS - PWM Temperature
Remote Temp Cutout
Reset Setpoint

Anti-Recycle
Table 12 provides a quick reference of the set points list for the Set Points Keys. Timer

Fan Control
On-Pressure

Fan Differential
Off-Pressure

Total Numbers
of
Compressors

Number of
Fans Per System

SYS / Unit
Trip Volts Option

Remote Unit ID

LD07404c

Figure 42 - SET POINTS QUICK REFERENCE LIST

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Service Mode
Use the Service Mode to view all the inputs and enable normal control. The user can disable the Service Mode
or disable all the outputs on the unit, except the com- by turning on the unit switch or by powering off and on
pressors. Some of the internal timers and counters are the 115 VAC.
viewable and modifiable in the Service Mode. To enter The Imperial units are exact values. The
the Service Mode, turn off the unit switch and press Metric units are approximates.
PROGRAM, ↑, ↑, ↓, ↓, and ENTER in sequence. The
Service Mode times out after 30 minutes and returns to

Table 17 - PROGRAM KEY LIMITS AND DEFAULT

PROGRAM VALUE LOW LIMIT HIGH LIMIT OPTIONS DEFAULT
Data Logging Mode — — OFF or ON OFF
Data Logging Timer
1s 60 s — 1s
(1 s Inc./Dec.)
SINGLE SPEED or
STANDARD
Fan Speed Control (SINGLE SPEED (CE) and
— — YLAA TWO SPEED SINGLE SPEED
STANDARD (NA) use Staged Fan Control)
FANS
YLAA VSD FANS
Two Comp Fan Speed Ref. 1 (VSD Fans)
10% 99% — 10%
(1 Inc.)
Three Comp Fan Speed Ref. 1 (VSD Fans)
10% 99% — 10%
(1 Inc.)
Fan Ramp Speed (VSD Fans)
0.5 %/s 6.0 %/s — 1.0 %/s
(0.5 Inc.)
Sys 1, 2 Fan Stage Operation (Two Speed Fans) Number of
0 — 0
(1 Stage Inc./Dec.) Fan Stages
DISABLE or 7
Compressor Soft Start — — DISABLE
ENABLE
R-22, R-407C,
Refrigerant Select — — R-410a
R-410A, or R-454B
THERMOSTATIC or
Expansion Valve Type — — ELECTRONIC
ELECTRONIC
DISABLE or
Remote Temp Reset Option — — DISABLE
ENABLE
Remote Inputs Service Time
5 min 60 min — 15 min
(1 min Inc./Dec.)
Feature Set NORTH AMERICAN
— — NORTH AMERICAN
(R-410a/R-454B) or EUROPEAN
(R-410a/R-454B
Chiller or Heatpump)
Evaporator Pump Control — — EXTERNAL, EXTERNAL
KIT PUMPS 1 or
KIT PUMPS 2
Evaporator Pump Total Run Hours (R-410a/
R-454B Chiller or Heatpump) 0 99999 — 0
(1 Inc./Dec. per entry position)

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TABLE 17 - PROGRAM KEY LIMITS AND DEFAULT (CONT’D)

PROGRAM VALUE LOW LIMIT HIGH LIMIT OPTIONS DEFAULT
(European Feature Set, R-
Control Mode — — 410a/R-454B) LEAVING
LEAVING or RETURN
(European Feature Set, R-
410a/R-454B)
Current Feedback — — NONE
NONE, ONE PER UNIT, or
ONE PER SYSTEM
(R-410a/R-454B Chiller or
Condensing Unit)
Hot Gas Bypass Valve Type — — SYS 1
NONE, SYS 1,
BOTH SYSTEMS, or SYS 2
(R-410a/R-454B Chiller or
Unit Type Select — — Condensing Unit) STANDARD
STANDARD or YCWL HP
(031-02755-004,
R-410a/R-454B)
Operating Envelope — — DISABLE
DISABLE, STANDARD, or
EXTENDED
(031-02755-004)
Sys 1,2 Comp. Sequence — — AUTO, COMP 1 AUTO
COMP 2, or COMP 3
Sys 1,2/Compressor 1-3 Operating Hours
0 99999 — 0
(1 Inc./Dec. per entry position)
Sys 1,2/Compressor 1-3 Start Counters
0 99999 — 0
(1 Inc./Dec. per entry position)
EEV Max Operating Pressure
20.0 psig 600.0 psig 150.0 psig
(031-02577-004, EEV) —
(1.38 barg) (41.38 barg) (10.34 barg)
(5.0 Inc./Dec.)
(Chillers and Heat Pump
Chilled Liquid Cooling Type* — — Cooling Only) WATER
WATER or GLYCOL

* If the chilled liquid cooling type is modified, the suction pressure cutout is set to the default value.

Selecting Low Temperature

To enable the LOW TEMPERATURE operation, com-
plete the following steps:
1. Under SERVICE MODE, select GLYCOL. 3. To select the required option, use the ↑ and ↓ keys.
See Table 15 and Table 16 for the modified limits
2. To display the following screen, press PRO- when the low temperature glycol is enabled.
GRAM, ↓, ↑, ↑, ↓, ENTER in sequence.
S T A N D A R D T E M P E R A T U R E
G L Y C O L

or
L O W T E M P E R A T U R E
G L Y C O L

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UNIT KEYS

OPTIONS

CLOCK

00070VIP

Options Key Option 2 – System Switches (two system

There are many user programmable options under the units only)
OPTIONS key. The OPTIONS key is used to scroll (Single System Display is similar)
through the list of options by repeatedly pressing the
OPTIONS key. After the selected option has been dis- S Y S 1 S W I T C H O N
played, the ↑ (UP) and ↓ (DOWN) arrow keys are then S Y S 2 S W I T C H O N
used to change that particular option. After the option
is changed, the ENTER/ADV key must be pressed to This allows both systems to run.
enter the data into memory.
or 7
Many of the OPTIONS displayed are
only programmable under the SERVICE S Y S 1 S W I T C H O N
MODE and not under the OPTIONS key. S Y S 2 S W I T C H O F F
Options only programmable under the
SERVICE MODE are noted in the details This turns system 2 OFF.
describing the option.
S Y S 1 S W I T C H O F F
Figure 43 on page 156 shows the programmable op- S Y S 2 S W I T C H O N
tions. Following are the displays in the order they ap-
pear: This turns system 1 OFF.
Option 1 – Language or
D I S P L A Y L A N G U A G E
S Y S 1 S W I T C H O F F
E N G L I S H
S Y S 2 S W I T C H O F F

English, Spanish, French, German, Italian, Portuguese, This turns systems 1 and 2 OFF.
Hungarian, Polish, and Swedish can be programmed.
Turning a system OFF with its system
switch allows a pumpdown to be per-
formed before shutdown.

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Option 3 – Ambient Control Type Option 5 – Unit Control Mode

A M B I E N T C O N T R O L C O N T R O L M O D E
S T A N D A R D R E T U R N L I Q U I D

The low ambient cutout is adjustable from 25°F to 60°F Unit control is based on return chilled liquid temp.
(-3.9°C to 15.6°C). Return Chilled Liquid Control can only be selected on
units that have 4 to 6 compressors (dual system units).
or
or
A M B I E N T C O N T R O L
L O W A M B I E N T C O N T R O L M O D E
L E A V I N G L I Q U I D
The low ambient cutout is programmable down to
-10°F (-23.3°C). A low ambient kit and variable Option 6 – Display Units
speed fans MUST be installed for this option to be
D I S P L A Y U N I T S
chosen. If the kit is NOT installed, and low ambi-
I M P E R I A L
ent is selected, low pressure faults and compressor
damage may occur.
This mode displays system operating values in Impe-
Option 4 – Local/Remote Control Type rial units of °F or PSIG.
L O C A L / R E M O T E M O D E L or
L O C A L
D I S P L A Y U N I T S
S I
When programmed for LOCAL, an ISN or RCC con-
trol can be used to monitor only. The micro panel will
operate on locally programmed values and ignore all This mode displays system operating values in Scien-
commands from remote devices, or through the RS- tific International Units of °C or barg.
485 inputs. The chiller will communicate and send data
to the remote monitoring devices.
or
L O C A L / R E M O T E M O D E
R E M O T E

This mode should be selected when an ISN or RCC

control is to be used to control the chiller. This mode
will allow the ISN to control the following items: Re-
mote Start/Stop, Cooling Set Point, Load Limit, and
History Buffer Request. If the unit receives no valid
ISN transmission for 5 minutes, it will revert back to
the locally programmed values.

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Option 7 – Lead/Lag Type (two system units Option 9 – Manual Override Mode
only) M A N U A L O V E R R I D E M O D E
L E A D / L A G C O N T R O L D I S A B L E D
M A N U A L S Y S 1 L E A D
This option allows overriding of the daily schedule
SYS 1 selected as lead compressor. SYS 1 lead option that is programmed. MANUAL OVERRIDE MODE –
MUST be chosen if Hot Gas Bypass is installed. DISABLED indicates that override mode has no effect.
or or
L E A D / L A G C O N T R O L M A N U A L O V E R R I D E M O D E
M A N U A L S Y S 2 L E A D E N A B L E D

SYS 2 selected as lead compressor. Manual Override Mode is enabled. This is a service
function and when enabled, will allow the unit to start
or when shut down on the daily schedule. It will auto-
L E A D / L A G C O N T R O L matically be disabled after 30 minutes.
A U T O M A T I C
Option 10 – Current Feedback Options
Installed
Lead/lag between systems may be selected to help
equalize average run hours between systems on chillers C U R R E N T F E E D B A C K

N O N E
with 2 refrigerant systems. Auto lead/lag allows auto-
matic lead/lag of the two systems based on an average
run hours of the compressors in each system. A new This mode should be selected when the panel is not
lead/lag assignment is made whenever all compressors equipped with current sensing capability.
shut down. The microprocessor will then assign the
or
“lead” to the system with the shortest average run time.
C U R R E N T F E E D B A C K

Option 8 – Condenser Fan Control Mode O N E P E R U N I T
F A N C O N T R O L
7
D I S C H A R G E P R E S S U R E This mode should be selected when an optional 2ACE
Module is installed to allow combined current moni-
Condenser fans are controlled by discharge pressure toring of all systems by sensing current on the incom-
only. This mode must be chosen. ing line.
or or
F A N C O N T R O L C U R R E N T F E E D B A C K

A M B I E N T & D S C H P R E S S O N E P E R S Y S T E M

Do not select this option on R-410A chillers. This mode should be selected when an optional 2ACE
module is installed to allow individual current moni-
toring of each system. SYS 1 input is to J7 of the I/O.
SYS 2 input is to J8 of the I/O.

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Option 11 – Power Fail Restart Option 14 – Refrigerant Type

P O W E R F A I L R E S T A R T R E F R I G E R A N T T Y P E
A U T O M A T I C R – 4 1 0 A

Chiller auto restarts after a power failure. Refrigerant type R-410A must be selected under Ser-
vice Mode. Refrigerant type is displayed under the
P O W E R F A I L R E S T A R T
OPTIONS key, but is only programmable in Service
M A N U A L
Mode.
Incorrect programming may cause dam-
After a power failure, the UNIT switch must be tog-
age to compressors.
gled before restart at the unit is allowed. NORMALLY
MANUAL RESTART should NOT BE SELECTED.

Option 12 – Soft Start Enable/Disable

S O F T S T A R T
D I S A B L E D Option 15 – Expansion Valve Type
X P A N S I O N
E V A L V E T Y P E
SOFT START “DISABLED” MUST be selected on all T H E R M O S T A T I C
chillers.
Expansion valve type, thermostatic or electronic
This message may not be viewable on non-European
may be selected under Service Mode. Expansion valve
chillers.
type is displayed under the OPTIONS key, but is only
Option 13 – Unit Type programmable in Service Mode. YLAA chillers will
typically always be equipped with thermostatic expan-
U N I T T Y P E sion valves.
L I Q U I D C H I L L E R
Incorrect programming may cause dam-
age to compressors.
The UNIT TYPE message cannot be modified under
the unit keys.
“Liquid CHILLER” must be displayed, or
damage to compressors or other compo-
nents will occur if operated in the HEAT Also see the UNIT KEYS PROGRAMMING QUICK
PUMP or CONDENSING UNIT modes. REFERENCE LIST in Figure 43 on page 156.

Option 16 – Flash Card Update

If unit type needs to be changed to make the unit a F L A S H C A R D U P D A T E
liquid chiller, remove power and then remove the D I S A B L
E D
jumper between J11-7 and J11-12 on the I/O Board.
Reapply power to the micro panel and the micropro-
A Flash Card is used to input the operating program
cessor will store the change.
into the chiller IPU. A Flash Card is used instead of an
EPROM. Normally, a Flash Card update is not required
and the message above will be displayed.

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If the operating software is to be updated, insert the The options display message for Remote
Flash Card into the Flash Card input port. Turn off the Temp Reset Input only appears if the
unit switch and set the FLASH CARD UPDATE TO Temp Reset Option is enabled under Ser-
“ENABLED” using the ↑ and ↓ keys. vice Mode. The option must be enabled
under the Service Mode for the Remote
F L A S H C A R D U P D A T E Temperature Reset to operate.
E N A B L E
D

Option 18 – Pump Control

Press the ENTER key and the following message will
be displayed until the update has been completed. The Pump Control is utilized to operate the optional on-
keypad and display will not respond during the update. board pump kit or to control an external pump through
DO NOT reset or power down the chiller until the up- dry contacts 23 and 24 on Terminal Block XTBC2. To
date is completed. use this option, the following selection should be made
in the Service Mode:
F L A S H C A R D U P D A T I N G
Y O R
K H
Y D
R O
P L E A S E W A I T . . .
K I T P
U M
P S = 1

After the update is completed, an automatic reboot will

occur. If an error occurred, the following message will When YORK HYDRO KIT PUMPS = 1, the controls
appear with the error code and no reboot will occur. will be closed to run the pumps whenever any one of
the following conditions are true:
F L A S H C A R D U P D A T E
E R R O R XXXXX
• Low Leaving Chilled Liquid Fault
• Any compressor is running
If the update resulted in an error, the original program • Daily Schedule is ON and Remote Stop is closed.
will still be active. When an error occurs, assure the
correct Flash Card was utilized. Incorrect chiller soft- Even if one of the above conditions are
ware will cause an error. If this is not the case, the true, the pump will not run if the chiller
Flash Card is most likely defective or the IPU and I/O has been powered up for less than 30 sec-
combo board is bad. onds; or if the pump has run in the last
30 seconds to prevent pump overheating. 7
Option 17 – Remote Temperature Reset
R E M O T E T E M P R E S E T E X
T E
R N
A L
I
N P U T XXXXXXXXXXXXXX E
V A
P P U
M P

Remote Temp Reset input selection is programmable EXTERNAL EVAP PUMP should be selected if an ex-
according to the type of input utilized. The following ternal pump is being controlled with the chiller pump
options are available: contacts. The operation will be the same as YORK
HDRO KIT PUMPS = 1
• DISABLED (default)
The following option should not be selected.
• 0.0 – 10.0 (DC)
Y O R
K H
Y D
R O
• 2.0 – 10.0 V (DC)
K I T P
U M
P S = 2
• 0.0 – 20.0 mA
• 4.0 – 20.0 mA

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Option 19 – Pump Selection Option 21 – Flash Card Data Logging

The displays for this PUMP SELECTION option When the following message appears, data logging is
should only appear if “YORK HYDRO KIT PUMPS = disabled.
2” are selected under Option 19. Presently, this option
D A T A L O G T O F L A S H C A R D
should not be used.
O F F
Option 20 – Hot Gas Bypass Type
Hot gas bypass type cannot be programmed under the When the following message appears, data logging is
options key. This option will display the hot gas bypass enabled.
type as programmed in Service Mode for R-410a units. D A T A L O G T O F L A S H C A R D
Reference unloading logic flow chart for hot gas by- O N
pass valve operation local/remote is set to local
H O T G A S B Y P A S S T Y P E When the following message appears, data logging is
N O N E enabled and is not logging unchanged data.
D A T A L O G T O F L A S H C A R D
When programmed for hot gas bypass type None, the S K I P U N C H A N G E D
unit will pump down and shutdown the lead system.
H O T G A S B Y P A S S T Y P E Option 22 – Temperature Sensors Enable
S Y S T E M 1
This option will display for YLAA and YLPA R-410a
units.
When programmed for hot gas bypass type System 1,
the unit will operate system 1 hot gas bypass if system Note: When R-22 is programmed, the optional dis-
1 is the lead system. charge temperature sensors will not be affected by this
modification.
H O T G A S B Y P A S S T Y P E
S Y S T E M 2 D S C H T E M P S E N S O R S

E N A B L E D

When programmed for hot gas bypass type System 2,

the unit will operate system 2 hot gas bypass if system When the following option is selected, the discharge
2 is the lead system. temperature sensors are enabled for non-YCWL units
and disabled on YCWL, leaving liquid and return liq-
H O T G A S B Y P A S S T Y P E uid hot temperature sensors.
B O T H S Y S T E M S
Y C W L T E M P S E N S O R S

E N A B L E D
When programmed for hot gas bypass type Both Sys-
tems, the condensing units operating in suction pres-
sure control operate independent of the lead/lag sys- When the following option is selected, the discharge
tem. All other units will use the hot gas bypass valve of temperature sensors are disabled.
the lead system when unloading.
D S C H T E M P S E N S O R S

D I S A B L E D

154 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 7 – UNIT CONTROLS
ISSUE DATE: 10/24/2019

Option 23 – Variable Water Outlet Mode To change the day, time, and date press the CLOCK
When the following option is selected, the variable wa- key. The display will show something similar to the
following:
ter outlet mode is enabled.
T O D A Y I S F R I 0 8 : 5 1 A M
V A R I A B L E O U T L E T
M O D E
2 5 J A N 0 2
E N A B L E D

The line under the F is the cursor. If the day is correct,

When the following option is selected, the variable wa-
press the ENTER/ADV key. The cursor will move un-
ter outlet mode is disabled.
der the 0 in 08 hours. If the day is incorrect, press the
V A R I A B L E O U T L E T
M O D E ↑ (UP) or ↓ (DOWN) arrow keys until the desired day
D I S A B L E D is displayed and then press the ENTER/ADV key at
which time the day will be accepted and the cursor will
move under the first digit of the “2 digit hour”. In a
Clock similar manner, the hour, minute, meridian, month, day,
The CLOCK display shows the current day, time, and and year may be programmed, whenever the cursor is
date. Pressing the CLOCK key will show the current under the first letter/numeral of the item. Press the ↑
day, time, and date. (UP) or ↓ (DOWN) arrow keys until the desired hour,
minute, meridian; day, month, and year are displayed.
It is important that the date and time be correct, other- Pressing the ENTER/ADV key will save the valve and
wise the daily schedule will not function as desired if move the cursor on to the next programmable variable.
programmed. In addition, for ease of troubleshooting
via the History printouts, the day, time, and date should
be correct.

JOHNSON CONTROLS 155

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Options Key
Expansion Valve Type
(press Options Key
to adv.) (Thermoplastic or Electric)
(Programmed under Service
Display Language Mode, Viewable Only)
Must be programmed
System Switches for Thermostatic
on/off
Flash Card Update
Chilled Liquid Type
(water or glycol)
Remote Temp Reset

Ambient Control
Pump Control
(standard or low)

Pump Selection
Local/Remote Mode

Unit Control Mode

(Return or Leaving)

Display Units
(English or Metric)

System Lead/Lag Control

(Manual or Automatic)

Fan Control Mode

Manual Override Mode

Current Feedback Option

Power Failure Restart

Soft Start Option

Unit Type
(”Chiller” MUST be Selected
Via No Jumper Installed
(Viewable Only)

Refrigerant Type
R-410A
(Programmed under Service Mode)
Viewable Only)

LD07405d
Figure 438 provides a quick reference list for the Unit key set points.

Figure 43 - UNIT KEYS OPTIONS PROGRAMMING QUICK REFERENCE LIST

156 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 7 – UNIT CONTROLS
ISSUE DATE: 10/24/2019

BACNET, MODBUS, N2, AND YORKTALK 2 • RS-485: connect to TB2 - Network (-1) to TB2
COMMUNICATIONS (-1); Network (+1) to TB2 (+1)
Data can be read and in some cases modified using a • RS-232: connect to TB3 - Network (RX) to TB3
serial communication BACnet, Modbus, or YorkTalk 2 (TXD); Network (TX) to TB3 (RXD); Network
network connection. This information allows commu- (GND) to TB3 (GND)
nications of chiller operating parameters and external
See Figure 44 on page 158 for TB1, TB2 and TB3
control changes to set point, load limiting, and start/
locations.
stop commands.
In most cases, communication parameters will need to
BACnet and YorkTalk 2 RS485 networks are wired to
be modified. Table 30 on page 159 lists setup parame-
the + and - terminals of TB1 for port 1 communica-
ters for the available protocols. Modification is accom-
tions. Modbus network connection has the option of
plished by pressing the PROGRAM, DOWN ARROW,
RS232 or RS485 connection for port 2 communica-
DOWN ARROW, DOWN ARROW, DOWN ARROW,
tions. Modbus network is wired to either TB2 or TB3
and ENTER keys in sequence. The list below shows
as follows:
the displays for the values that may be modified:

P2 PROTOCOL
DE MODIFIER ADDRESS
XXXXXXXXXX
XXXXX

P2 MANUAL MAC
DE MODIFIER OFFSET
ADDRESS XXX
XX

P2 BAUD RATE
P1 PROTOCOL
XXXXX
XXXXXX

P2 PARITY
P1 MANUAL MAC
XXXXX 7
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 20 on page 160 for error descriptions

JOHNSON CONTROLS 157

 FORM 150.72-ICOM6
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035-02550-xxx I/O Board

LD14318

Figure 44 - MICRO PANEL CONNECTIONS

The table below shows the minimum, maximum, and

default values.

Table 18 - 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

158 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 7 – UNIT CONTROLS
ISSUE DATE: 10/24/2019

The table below shows set-up requirements for each

communication protocol.

Table 19 - VALUES REQUIRED FOR BAS COMMUNICATION

PROTOCOL
SETTING DESCRIPTION
BACNET MS/TP MODBUS RTU5 YORKTALK 2 N26
DE MODIFIER ADDRESS 0 to 419433 1 -1 0 to 419433
DE MODIFIER OFFSET 0 to 994 0 N/A 0 to 994
P1 PROTOCOL BACNET N/A N/A 9n2
P1 MANUAL MAC ADDRESS 0-127 1
N/A N/A 0-1271
9600 To 76800 or
P1 BAUD RATE N/A N/A 9600
Auto Selectable1
P1 PARITY NONE N/A N/A NONE
P1 STOP BITS 1 N/A N/A 1
P2 PROTOCOL N/A MODBUS SVR N/A N/A
P2 MANUAL MAC ADDRESS N/A 0-1271 N/A N/A
P2 BAUD RATE N/A 19,200 2
N/A N/A
P2 PARITY N/A NONE 2
N/A N/A
P2 STOP BITS N/A 1 N/A N/A
RS-485 or
P2 HW SELECT BIT N/A N/A N/A
RS-2321
RESET REAL TIME ERROR N/A N/A N/A N/A
P1 HW SELECT BIT N/A N/A N/A N/A
CHILLER ID N/A N/A 0 N/A

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.
6. Unit operating software version 04 (C.MMC.13.04, C.MMC.14.04, or C.MMC.16.04) or higher required for N2 protocol functionality.
7
BACnet and Modbus Communications Analog Read Only Points
Chiller data that can be read and modified using spe- This data can be read using a BACnet or Modbus net-
cific BACnet or Modbus Register Addresses; and the work connection and can NOT be modified using this
data associated with the addresses, is outlined in the connection. The Modbus Register Address for these
following description: points is 513 + AI #.

Analog Write Points Binary Monitor Only Points

This data can be read and modified using a BACnet This data can be read using a BACnet or Modbus net-
or Modbus network connection. The Modbus Register work connection and can NOT be modified using this
Address for these points is 1025 + AV #. connection. The Modbus Register Address for these
points is 1281 + BI #.
Binary Write Points
See Table 21 on page 161 for complete list of BACnet
This data can be read and modified using a BACnet
and Modbus registers.
or Modbus network connection. The Modbus Register
Address for these points is 1537 + BV #. The latest data map information is listed
on the Johnson Controls Equipment In-
tegration website.

JOHNSON CONTROLS 159

 FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

Communications Data Map Notes Table 20 - REAL TIME ERROR NUMBERS

(See Table 21) ERROR
NUMBER DESCRIPTION
1. IPU II based units are configured for Native BAC- (##)
net MS/TP and Modbus RTU communications. 0 ALL OK
E-Link Gateway not required for these two com- 1 DATUM TYPE OK TEST FAILED
munication protocols. 2 ENGLISH TEXT TOO LONG
2. BACnet Object Types: 3 FLOATING POINT EXCEPTION
4 GET PACKET FAILED
0 = Analog In 5 = Binary Value
5 GET TYPE FAILED
1 = Analog Out 8 = Device 6 INVALID UNIT CONVERSION
7 INVALID HARDWARE SELECTION
2 = Analog Value 15 = Alarm Notifica-
8 REAL TIME FAULT
tion (0 through 127
3 = Binary In 9 SPANISH TEXT TOO LONG
are reserved ASHRAE
4 = Binary Output Objects). 10 THREAD EXITED
11 THREAD FAILED
3.
12 THREAD STALLED
WC= Inches of water Pa = Pascals 13 IO BOARD RESET
column 14 BRAM INVALID
kPa = Kilopascals
CFM = Cubic Feet per 15 BACNET SETUP FAILED
PPM = Part per Mil-
Minute
lion
FPM = Feet per Minute Reboot required (cycle power) after set-
kJ/kg = Kilojoules per tings are changed.
PSI = Lb per square Kilogram.
inch
4. Water Cooled Scroll units use the same firmware
as Air Cooled Scroll units, ignoring Fan Control.
The table below shows the real time error numbers that
may be encountered during communication setup and
a description of each.

160 JOHNSON CONTROLS

 SCROLL CHILLER/HEATPUMP/CONDENSING UNIT Modbus RTU, BACnet MS/TP, N2 Data Map Board: 031-02550
Item Version York P/N Comments
1 C.MMC.13.11, C.MMC.14.11, C.MMC.16.12 031-02755-001, -003, -004 New
2 C.MMC.13.11, C.MMC.14.11, C.MMC.16.13 031-02755-001, -003, -004 Update Unit Control Mode
3
4
5
6
7
FORM 150.72-ICOM6

JOHNSON CONTROLS
ISSUE DATE: 10/24/2019

9
10

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

ANALOG WRITE POINTS

1 REM_SETP AV1 1026 03,06,16 Div 10 ADF 1 °F °C Remote Setpoint [99=Auto] S
2 SP_REM_SP_S1 AV2 1027 03,06,16 Div 10 ADF 2 PSI BAR Sys 1 Remote Setpoint (SP Unit) O
3 LOAD_LIMIT AV3 1028 03,06,16 Div 10 ADF 3 None None Load Limit Stage [0,1,2] S
4 REM_CR AV4 1029 03,06,16 Div 10 ADF 4 °F °C Remote Cooling Range (DAT Unit) O
5 SP_REM_SP_S2 AV5 1030 03,06,16 Div 10 ADF 5 PSI BAR Sys 2 Remote Setpoint (SP Unit) O
6 REM_SP_HEAT AV6 1031 03,06,16 Div 10 ADF 6 °F °C Remote Heating Setpoint (HP or YCWL HP) O
Remote Heatpump Mode [0=Pnl, 1=Cool, 2=Heat] (HP
7 HP_MODE AV7 1032 03,06,16 Div 10 ADF 7 None None O
or YCWL HP)
BINARY WRITE POINTS
8 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
9 SS_SYS1 BV2 1539 01,03,05,06,15 N/A BD 2 0/1 0/1 Sys 1 Remote Start/Stop (SP Unit) N
10 SS_SYS2 BV3 1540 01,03,05,06,15 N/A BD 3 0/1 0/1 Sys 2 Remote Start/Stop (SP Unit) N
ANALOG READ ONLY POINTS
11 LCHLT AI1 514 03,04 x10 ADF 8 °F °C Leaving Chilled Liquid Temp S
12 RCHLT AI2 515 03,04 x10 ADF 9 °F °C Entering Chilled Liquid Temp S
13 DAT AI3 516 03,04 x10 ADF 10 °F °C Discharge Air Temp (DAT Unit) O
14 S1_SUCT_TEMP AI4 517 03,04 x10 ADF 11 °F °C Sys 1 Suction Temp (EEV, Cond Units, R-410a) O
15 OAT AI5 518 03,04 x10 ADF 12 °F °C Ambient Air Temp S
16 S1_SUCT_SH AI6 519 03,04 x10 ADF 13 °F (diff) °C (diff) Sys 1 Suction Superheat (EEV) S
17 S1_RUN_TIME AI7 520 03,04 x10 ADF 14 None None Sys 1 Run Time in seconds S
18 S1_SUCT_PR AI8 521 03,04 x10 ADF 15 PSI BAR Sys 1 Suction Pressure S
19 S1_DSCH_PR AI9 522 03,04 x10 ADF 16 PSI BAR Sys 1 Discharge Pressure S
20 S1_CIR_TEMP AI10 523 03,04 x10 ADF 17 °F °C Sys 1 Cooler Inlet Refrigerant Temp (R-407c) O
21 S1_DEF_TEMP AI11 524 03,04 x10 ADF 18 °F °C Sys 1 Defrost Temperature (HP) O
22 S1_EEV_OUT AI12 525 03,04 x10 ADF 19 % % Sys 1 EEV Output % (EEV) O
23 S1_AR_TIMER AI13 526 03,04 x10 ADF 20 None None Sys 1 Anti-Recycle Timer in seconds S
24 AC_TIMER AI14 527 03,04 x10 ADF 21 None None Anti-Coincident Timer in seconds S
Table 21 - NATIVE BACNET, MODBUS AND N2 COMMUNICATIONS DATA MAP

25 S2_SUCT_TEMP AI15 528 03,04 x10 ADF 22 °F °C Sys 2 Suction Temperature (EEV) S
26 S2_RUN_TIME AI16 529 03,04 x10 ADF 23 None None Sys 2 Run Time in seconds S
27 S2_SUCT_PR AI17 530 03,04 x10 ADF 24 PSI BAR Sys 2 Suction Pressure S
28 S2_DSCH_PR AI18 531 03,04 x10 ADF 25 PSI BAR Sys 2 Discharge Pressure S
29 S2_CIR_TEMP AI19 532 03,04 x10 ADF 26 °F °C Sys 2 Cooler Inlet Refrigerant Temp (R-407c) O
30 S2_DEF_TEMP AI20 533 03,04 x10 ADF 27 °F °C Sys 2 Defrost Temperature (HP) O
31 S2_SUCT_SH AI21 534 03,04 x10 ADF 28 °F (diff) °C (diff) Sys 2 Suction Superheat S
32 S2_AR_TIMER AI22 535 03,04 x10 ADF 29 None None Sys 2 Anti-Recycle Timer S
33 S2_EEV_OUT AI23 536 03,04 x10 ADF 30 % % Sys 2 EEV Output % (EEV) O
34 NUM_COMPS AI24 537 03,04 x1 ADF 31 None None Number of Compressors S

Property of Johnson Controls, Inc.

SCROLL Native Comms 16 AUG 2017 Subject to change without notice. 1 of 4

161
SECTION 7 – UNIT CONTROLS

7
 Item BACnet Modbus
Modbus Modbus Data Type Engineering Units Point List Code: S = Standard O = Optional N = Not Available

162
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
35 S1_OP_CODE AI25 538 03,04 x1 ADF 32 None None Sys 1 Operational Code S
36 S1_FLT_CODE AI26 539 03,04 x1 ADF 33 None None Sys 1 Fault Code S
37 S2_OP_CODE AI27 540 03,04 x1 ADF 34 None None Sys 2 Operational Code S
38 S2_FLT_CODE AI28 541 03,04 x1 ADF 35 None None Sys 2 Fault Code S
39 S1_DBG_CODE AI29 542 03,04 x1 ADF 36 None None Sys 1 Debug Code N
40 S1_FAN_STAGE AI30 543 03,04 x1 ADF 37 None None Sys 1 Condenser Fan Stage S
41 S2_DBG_CODE AI31 544 03,04 x1 ADF 38 None None Sys 2 Debug Code N
42 S2_FAN_STAGE AI32 545 03,04 x1 ADF 39 None None Sys 2 Condenser Fan Stage S
Unit Control Mode [1=LW, 2=RW, 3=DA, 4=SP, 5=HC,
43 CONTROL_MODE AI33 546 03,04 x1 ADF 40 None None S
6=HP]
44 AR_TIME AI34 547 03,04 x1 ADF 41 None None Anti-Recycle Time Programmed S
SECTION 7 – UNIT CONTROLS

45 LCHLT_CUT AI35 548 03,04 x10 ADF 42 °F °C Leaving Chilled Liquid Temp Cutout S
46 LOW_AMB_CUT AI36 549 03,04 x10 ADF 43 °F °C Low Ambient Temperature Cutout S
47 SUCT_P_CO_HT AI37 550 03,04 x10 ADF 44 PSI BAR Low Suction Pressure Cutout Heating (HP) O
48 L_SUCT_P_CO AI38 551 03,04 x10 ADF 45 PSI BAR Low Suction Pressure Cutout Cooling S
49 H_DSCH_P_CO AI39 552 03,04 x10 ADF 46 PSI BAR High Discharge Pressure Cutout S
50 COOL_SETP AI40 553 03,04 x10 ADF 47 °F °C Cooling Setpoint S
51 SP_SETP_S1 AI41 554 03,04 x10 ADF 48 PSI BAR Sys 1 Cooling Setpoint (SP Unit) O
52 CONTROL_RG AI42 555 03,04 x10 ADF 49 °F °C Cooling Range S
53 SP_CTL_RG_S1 AI43 556 03,04 x10 ADF 50 PSI BAR Sys 1 Cooling Range (SP Unit) O
54 SP_SETP_S2 AI44 557 03,04 x10 ADF 51 PSI BAR Sys 2 Cooling Setpoint (SP Unit) O
55 HEAT_SETP AI45 558 03,04 x10 ADF 52 °F °C Heating Setpoint (HP) O
56 SP_CTL_RG_S2 AI46 559 03,04 x10 ADF 53 PSI BAR Sys 2 Cooling Range (SP Unit) O
57 HEAT_RANGE AI47 560 03,04 x10 ADF 54 °F °C Heating Range (HP) O
58 S1_DSCH_TEMP AI48 561 03,04 x10 ADF 55 °F °C Sys 1 Discharge Temperature (EEV) O
59 S1_DSCH_SH AI49 562 03,04 x10 ADF 56 °F (diff) °C (diff) Sys 1 Discharge Superheat (EEV) O
60 S2_DSCH_TEMP AI50 563 03,04 x10 ADF 57 °F °C Sys 2 Discharge Temperature (EEV) O
61 S2_DSCH_SH AI51 564 03,04 x10 ADF 58 °F (diff) °C (diff) Sys 2 Discharge Superheat (EEV) O
62 LEAVING_HOT AI52 565 03,04 x10 ADF 59 °F °C Leaving Liquid Hot Temp (R-410a) O
63 RETURN_HOT AI53 566 03,04 x10 ADF 60 °F °C Return Liquid Hot Temp (R-410a) O
64 R_COOL_SETP AI54 567 03,04 x10 ADF 61 °F °C Remote Setpoint S
65 R_SP_SETP_S1 AI55 568 03,04 x10 ADF 62 PSI BAR Remote Setpoint 1 (SP Unit) O
66 R_SP_SETP_S2 AI56 569 03,04 x10 ADF 63 PSI BAR Remote Setpoint 2 (SP Unit) O
67 R_HEAT_SETP AI57 570 03,04 x10 ADF 64 °F °C Remote Heating Setpoint (HP) O
BINARY READ ONLY POINTS
68 S1_ALARM BI1 1282 01,02,03 N/A BD4 0/1 0/1 Sys 1 Alarm [0=No Alarm, 1=Alarm] S
69 S2_ALARM BI2 1283 01,02,03 N/A BD5 0/1 0/1 Sys 2 Alarm [0=No Alarm, 1=Alarm] S
70 EVAP_HTR BI3 1284 01,02,03 N/A BD6 0/1 0/1 Evaporator Heater Status S
71 EVAP_PUMP BI4 1285 01,02,03 N/A BD7 0/1 0/1 Evaporator Pump S
72 S1_C1_RUN BI5 1286 01,02,03 N/A BD8 0/1 0/1 Sys 1 Comp 1 Run S
73 S2_C1_RUN BI6 1287 01,02,03 N/A BD9 0/1 0/1 Sys 2 Comp 1 Run S
74 S1_LLSV BI7 1288 01,02,03 N/A BD10 0/1 0/1 Sys 1 Liquid Line Solenoid Valve S
75 S1_MODE_SV BI8 1289 01,02,03 N/A BD11 0/1 0/1 Sys 1 Mode Solenoid Valve (HP) O
76 S1_HGBV BI9 1290 01,02,03 N/A BD12 0/1 0/1 Sys 1 Hot Gas Bypass Valve O
Bivalent Heat Source (YLAE HP)
77 S1_BHS BI10 1291 01,02,03 N/A BD13 0/1 0/1 O
Tray Heater (YLPA)
78 S1_C2_RUN BI11 1292 01,02,03 N/A BD14 0/1 0/1 Sys 1 Comp 2 Run S
79 S2_C2_RUN BI12 1293 01,02,03 N/A BD15 0/1 0/1 Sys 2 Comp 2 Run S
80 S2_LLSV BI13 1294 01,02,03 N/A BD16 0/1 0/1 Sys 2 Liquid Line Solenoid Valve S
TABLE 21 - NATIVE BACNET, MODBUS AND N2 COMMUNICATIONS DATA MAP (CONT’D)

81 S2_MODE_SV BI14 1295 01,02,03 N/A BD17 0/1 0/1 Sys 2 Mode Solenoid Valve (HP) O
82 LEAD_SYS BI15 1296 01,02,03 N/A BD18 0/1 0/1 Lead System [0=Sys 1, 1=Sys 2] S
83 S1_C3_RUN BI16 1297 01,02,03 N/A BD19 0/1 0/1 Sys 1 Comp 3 Run S

Property of Johnson Controls, Inc.

SCROLL Native Comms 16 AUG 2017 Subject to change without notice. 2 of 4

JOHNSON CONTROLS
ISSUE DATE: 10/24/2019
FORM 150.72-ICOM6
 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
84 S2_C3_RUN BI17 1298 01,02,03 N/A BD20 0/1 0/1 Sys 2 Comp 3 Run S
85 CH_LIQ_TYPE BI18 1299 01,02,03 N/A BD21 0/1 0/1 Chilled Liquid Type [0=Water, 1=Glycol] S
86 Code Value
AMB_MODE BI19 Code
1300Operational 01,02,03 N/A Code Value
BD22 0/1 0/1 Fault/Inhibit
Ambient Control Mode
Code[0=Std Amb, 1=Low Amb] S
87 0
CNTL_MODE No Abnormal
BI20 Condition
1301 01,02,03 N/A 0
BD23 No Fault
0/1 Code 0/1 Local Remote Control Mode [0=Manual, 1=Auto] S
88 1
DATA_UNIT Unit Switch
BI21 OFF 1302 01,02,03 N/A 1
BD24 115 VAC
0/1 Under Voltage
0/1 Display Units [0=Imperial, 1=SI] S
89 AUTO_LL 2 System Switch
BI22 OFF1303 01,02,03 N/A 2
BD25 Low Ambient
0/1 Temperature
0/1 Lead Lag Control Mode [0=Manual, 1=Auto] S
FORM 150.72-ICOM6

90 S2_HGBV 3 Lockout
BI23 1304 01,02,03 N/A 3
BD26 0/1 0/1 Sys 2 Hot Gas Bypass Valve O

JOHNSON CONTROLS
4 Unit Fault 4 Low Leaving Chilled Liquid Temperature
ISSUE DATE: 10/24/2019

5 System Fault 5 High Discharge Pressure

NOTES
6 Remote Shutdown 6
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.
7 Daily Schedule Shutdown 7 Low Suction Pressure
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)
8 No Run Permissive 8
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
9 No Cool Load 9
4 Values that are not applicable due to unit configuration and options will be sent as zero (0).
10 Anti-Coincidence Timer Active 10
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.
11 Anti-Recycle Timer Active 11
6
12 Manual Override 12
7
13 Suction Limiting 13
8
14 Discharge Limiting 14
9
15 15
10
16 Load Limiting 16
17 Compressor(s) Running 17
18 Heatpump Load Limiting Property
18 of Johnson
MP/HPCOControls,
Fault Inc.
Comms 16 AUG 2017
SCROLL Native 19 Subject
19 to change without notice.
Low Evaporator Temperature 3 of 4
20 20
21 21
Code Value 22 Operational Code Code Value 22 Unit Motor Current Fault/Inhibit Code
0 23 No Abnormal Condition 0 CodeSuperheat
23 No Fault Low
1 24 Unit Switch OFF 1 Under Voltage
24 115 VACSensor Fault
2 25 System Switch OFF 2 Temperature
Discharge
25 Low Ambient Inhibit
3 26 Lockout 3 26 MP/HPCO Inhibit
4 27 Unit Fault 4 27 Low Leaving Chilled
Pump Trip Liquid Temperature
5 28 System Fault 5 Pressure
Pump Fail
28 High Discharge Make Flow
6 29 Remote Shutdown 6 29 High Ambient Temperature
7 30 Daily Schedule Shutdown 7 30 Low Suction Pressure
Anti-Vacuum Low Pressure Cutout
8 31 No Run Permissive 8 31
9 32 No Cool Load 9 32
10 33 Anti-Coincidence Timer Active 10 33
11 34 Anti-Recycle Timer Active 11 34
12 35 Manual Override 12 35
13 36 Suction Limiting 13 36
14 37 Discharge Limiting 14 37
15 38 15 38
16 39 Load Limiting 16 39
17 40 Compressor(s) Running 17 40
18 41 Heatpump Load Limiting 18 41 MP/HPCO Fault
19 42 19 42 Low Evaporator Temperature
20 43 20 43
21 44 21 44
22 45 22 45 Unit Motor Current
23 46 23 46 Low Superheat
TABLE 21 - NATIVE BACNET, MODBUS AND N2 COMMUNICATIONS DATA MAP (CONT’D)

24 47 24 47 Sensor Fault
25 48 25 48 Discharge Inhibit
26 49 26 49 MP/HPCO Inhibit
27 50 27 50 Pump Trip
28 28 Pump Fail Make Flow
29 29 Property
HighofAmbient Controls, Inc.
JohnsonTemperature
SCROLL
30Native Comms 16 AUG 2017 30 Subject
Anti-Vacuum without
to change Low Pressure
notice.Cutout 3 of 4
31 31
32 32
Property of Johnson Controls, Inc.
33 33
SCROLL Native Comms 16 AUG 2017 Subject to change without notice. 4 of 4
34 34

163
SECTION 7 – UNIT CONTROLS

35 35
36 36
37 37
38 38
7

39 39
 FORM 150.72-ICOM6
SECTION 7 – UNIT CONTROLS
ISSUE DATE: 10/24/2019

Yorktalk 2 Communications Transmitted Data

Received Data (Control Data) After receiving a valid transmission from the E-Link
Gateway, the unit will transmit either operational data
The unit receives eight data values from the E-Link
or history buffer data depending on the “History Buffer
Gateway. The first four are analog values and the last
Request” on ENG PAGE 10. Data must be transmitted
four are digital values. These eight data values are used
for every page under feature 54. If there is no value to
as control parameters when in REMOTE mode. When
be sent to a particular page, a zero will be sent. Table
the unit is in LOCAL mode, these eight values are ig-
22 on page 165 shows the data values and page list-
nored. If the unit receives no valid YorkTalk 2 trans-
ings for this unit.
mission for 5 minutes it will revert back to all local
control values. Table 22 on page 165 lists the control The latest point map information is
parameters. These values are found under feature 54 in listed on the Johnson Controls Equip-
the E-Link Gateway. ment Integration website http://
my.johnsoncontrols.com/portal/myportal/
cg/prod/na/chiller_in

164 JOHNSON CONTROLS

 04/17/2018

SCROLL CHILLER/HEATPUMP/CONDENSING UNIT York Talk 2 (eLink) Board: 031-02550

Item Version York P/N Baud Comments
1 C.MMC.13.05, C.MMC.14.05, C.MMC.16.07 031-02755-001, -003, -004
4800 New
2 C.MMC.13.11, C.MMC.14.11, C.MMC.16.11 031-02755-001, -003, -004
4800 Update: add SCC, section 2
3 C.MMC.16.12 031-02755-004 4800 Update: -004 release
4 C.MMC.13.14, C.MMC.14.14, C.MMC.16.14 031-02755-001, -003, -004
4800 Update
FORM 150.72-ICOM6

JOHNSON CONTROLS
ISSUE DATE: 10/24/2019

6
7
8
9
10

SECTION 1

Eng BACnet Engineering

BACnet Object LON Profile N2 Modbus Point List Code: S = Standard O = Optional N = Not Available
Page Object LON SNVT Type Units
Name Name Metasys
Ref Typ/Ins Address Scale Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
YT2_ S01_ P03 °F °C Remote Setpoint [99=Auto]
P03 AV1 nviYTS01p003 SNVT_count_f (51) S S S S
ADF 1 0001 x10 PSI BAR Sys 1 Remote Setpoint (SP Unit)
YT2_ S01_ P04 Load Limit Stage [0, 1, 2]
P04 AV2 nviYTS01p004 SNVT_count_f (51) None None S S S S
ADF 2 0002 x1 Sys 1 Load Limit Stage [0, 1, 2]
YT2_ S01_ P05 °F °C Remote Heating Setpoint (HP or YCWL HP)
P05 AV3 nviYTS01p005 SNVT_count_f (51) °F °C Remote Cooling Range (DAT Unit) O O O O
ADF 3 0003 x10 PSI BAR Sys 2 Remote Setpoint (SP Unit)
YT2_ S01_ P06 Remote Heatpump Mode [0=Pnl, 1=Cool, 2=Heat]
P06 AV4 nviYTS01p006 SNVT_count_f (51) None None (HP or YCWL HP) O O O O
Table 22 - YORKTALK 2 COMMUNICATIONS DATA MAP

ADF 4 0004 x1 Sys 2 Load Limit Stage [0, 1, 2]

YT2_ S01_ P07 Start/Stop Command
P07 BV1 nviYTS01p007 SNVT_switch (95) 0/1 0/1 S S S S
BD 1 0005 N/A Sys 1 Start/Stop Command
P08 BV2 YT2_ S01_ P08 nviYTS01p008 SNVT_switch (95) BD 2 0006 N/A 0/1 0/1 Sys 2 Start/Stop Command O O O O
P09 BV3 YT2_ S01_ P09 nviYTS01p009 SNVT_switch (95) BD 3 0007 N N N N
P10 BV4 YT2_ S01_ P10 nviYTS01p010 SNVT_switch (95) BD 4 0008 N/A 0/1 0/1 History Buffer Request S S S S
P11 AV5 YT2_ S01_ P11 nvoYTS01p011 SNVT_count_f (51) ADF 5 0009 x10 °F °C Leaving Chiller Liquid Temp S S S S
P12 AV6 YT2_ S01_ P12 nvoYTS01p012 SNVT_count_f (51) ADF 6 0010 x10 °F °C Entering Chilled Liquid Temp S S S S
P13 AV7 YT2_ S01_ P13 nvoYTS01p013 SNVT_count_f (51) ADF 7 0011 x10 °F °C Leaving Liquid Temp Hot (YCWL) O O O O
YT2_ S01_ P14 Discharge Air Temp (Cond Unit)
P14 AV8 nvoYTS01p014 SNVT_count_f (51) °F °C O O O O
ADF 8 0012 x10 Entering Liquid Temp Hot (YCWL)
P15 AV9 YT2_ S01_ P15 nvoYTS01p015 SNVT_count_f (51) ADF 9 0013 x10 °F °C Sys 1 Suction Temperature (EEV) O O O O
P16 AV10 YT2_ S01_ P16 nvoYTS01p016 SNVT_count_f (51) ADF 10 0014 x10 °F °C Ambient Air Temperature S S S S
P17 AV11 YT2_ S01_ P17 nvoYTS01p017 SNVT_count_f (51) ADF 11 0015 x10 °F (diff) °C (diff) Sys 1 Suction Superheat (EEV) O O O O
P18 AV12 YT2_ S01_ P18 nvoYTS01p018 SNVT_count_f (51) ADF 12 0016 x1 None None Sys 1 Run Time in seconds S S S S
P19 AV13 YT2_ S01_ P19 nvoYTS01p019 SNVT_count_f (51) ADF 13 0017 x10 PSI BAR Sys 1 Suction Pressure S S S S
P20 AV14 YT2_ S01_ P20 nvoYTS01p020 SNVT_count_f (51) ADF 14 0018 x10 PSI BAR Sys 1 Discharge Pressure S S S S
YT2_ S01_ P21 Sys 1 Suction Temperature (Cond Unit)
P21 AV15 nvoYTS01p021 SNVT_count_f (51) °F °C O O O O
ADF 15 0019 x10 Sys 1 Cooler Inlet Refrigerant Temp (R-407c)
P22 AV16 YT2_ S01_ P22 nvoYTS01p022 SNVT_count_f (51) ADF 16 0020 x10 °F °C Sys 1 Defrost Temperature (HP) O O O O
P23 AV17 YT2_ S01_ P23 nvoYTS01p023 SNVT_count_f (51) ADF 17 0021 x10 % % Sys 1 EEV Output % (EEV) O O O O
P24 AV18 YT2_ S01_ P24 nvoYTS01p024 SNVT_count_f (51) ADF 18 0022 x1 None None Sys 1 Anti-Recycle Timer in seconds S S S S
P25 AV19 YT2_ S01_ P25 nvoYTS01p025 SNVT_count_f (51) ADF 19 0023 x1 None None Anti-Coincident Timer in seconds S S S S
P26 AV20 YT2_ S01_ P26 nvoYTS01p026 SNVT_count_f (51) ADF 20 0024 x10 °F °C Sys 2 Suction Temperature (EEV) O O O O

Johnson Controls, Inc.

Scroll BAS(ISN)

165
1 of 6
SECTION 7 – UNIT CONTROLS

Subject to change without notice.

7
 04/17/2018

166
Eng BACnet Engineering
BACnet Object LON Profile N2 Modbus Point List Code: S = Standard O = Optional N = Not Available
Page Object LON SNVT Type Units
Name Name Metasys
Ref Typ/Ins Address Scale Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
P27 AV21 YT2_ S01_ P27 nvoYTS01p027 SNVT_count_f (51) ADF 21 0025 x1 None None Sys 2 Run Time in seconds S S S S
P28 AV22 YT2_ S01_ P28 nvoYTS01p028 SNVT_count_f (51) ADF 22 0026 x10 PSI BAR Sys 2 Suction Pressure S S S S
P29 AV23 YT2_ S01_ P29 nvoYTS01p029 SNVT_count_f (51) ADF 23 0027 x10 PSI BAR Sys 2 Discharge Pressure S S S S
YT2_ S01_ P30 Sys 2 Suction Temperature (Cond Unit)
P30 AV24 nvoYTS01p030 SNVT_count_f (51) °F °C O O O O
ADF 24 0028 x10 Sys 2 Cooler Inlet Refrigerant Temp (R-407c)
P31 AV25 YT2_ S01_ P31 nvoYTS01p031 SNVT_count_f (51) ADF 25 0029 x10 °F °C Sys 2 Defrost Temperature (HP) O O O O
P32 AV26 YT2_ S01_ P32 nvoYTS01p032 SNVT_count_f (51) ADF 26 0030 x10 °F (diff) °C (diff) Sys 2 Suction Superheat (EEV) O O O O
P33 AV27 YT2_ S01_ P33 nvoYTS01p033 SNVT_count_f (51) ADF 27 0031 x1 None None Sys 2 Anti-Recycle Timer in seconds S S S S
SECTION 7 – UNIT CONTROLS

P34 AV28 YT2_ S01_ P34 nvoYTS01p034 SNVT_count_f (51) ADF 28 0032 x10 % % Sys 2 EEV Output % (EEV) O O O O
P35 AV29 YT2_ S01_ P35 nvoYTS01p035 SNVT_count_f (51) ADF 29 0033 x1 None None Number of Compressors S S S S
P36 BV5 YT2_ S01_ P36 nvoYTS01p036 SNVT_switch (95) BD 5 0065 N/A 0/1 0/1 Sys 1 Alarm [0=No Alarm, 1=Alarm] S S S S
P37 BV6 YT2_ S01_ P37 nvoYTS01p037 SNVT_switch (95) BD 6 0066 N/A 0/1 0/1 Sys 2 Alarm [0=No Alarm, 1=Alarm] S S S S
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
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
P40 BV9 YT2_ S01_ P40 nvoYTS01p040 SNVT_switch (95) BD 9 0069 N/A 0/1 0/1 Sys 1 Comp 1 Run S S S S
P41 BV10 YT2_ S01_ P41 nvoYTS01p041 SNVT_switch (95) BD 10 0070 N/A 0/1 0/1 Sys 2 Comp 1 Run S S S S
YT2_ S01_ P42 Sys 1 Liquid Line Solenoid Valve
P42 BV11 nvoYTS01p042 SNVT_switch (95) 0/1 0/1 S S S S
BD 11 0071 N/A Sys 1 Mode Solenoid Valve (HP)
YT2_ S01_ P43 Sys 1 Hot Gas Bypass Valve
P43 BV12 nvoYTS01p043 SNVT_switch (95) 0/1 0/1 Bivalent Heat Source (YLAE HP) S S S S
BD 12 0072 N/A Tray Heater (YLPA HP)
P44 BV13 YT2_ S01_ P44 nvoYTS01p044 SNVT_switch (95) BD 13 0073 N/A 0/1 0/1 Sys 1 Comp 2 Run S S S S
P45 BV14 YT2_ S01_ P45 nvoYTS01p045 SNVT_switch (95) BD 14 0074 N/A 0/1 0/1 Sys 2 Comp 2 Run S S S S
YT2_ S01_ P46 Sys 2 Liquid Line Solenoid Valve
P46 BV15 nvoYTS01p046 SNVT_switch (95) 0/1 0/1 S S S S
BD 15 0075 N/A Sys 2 Mode Solenoid Valve (HP)
P47 BV16 YT2_ S01_ P47 nvoYTS01p047 SNVT_switch (95) BD 16 0076 N/A 0/1 0/1 Lead System [0=Sys1, 1=Sys2] S S S S
P48 BV17 YT2_ S01_ P48 nvoYTS01p048 SNVT_switch (95) BD 17 0077 N/A 0/1 0/1 Sys 1 Comp 3 Run S S S S
P49 BV18 YT2_ S01_ P49 nvoYTS01p049 SNVT_switch (95) BD 18 0078 N/A 0/1 0/1 Sys 2 Comp 3 Run S S S S
P50 BV19 YT2_ S01_ P50 nvoYTS01p050 SNVT_switch (95) BD 19 0079 N/A 0/1 0/1 Chilled Liquid Type [0=Water, 1=Glycol] S S S S
P51 BV20 YT2_ S01_ P51 nvoYTS01p051 SNVT_switch (95) BD 20 0080 N/A 0/1 0/1 Ambient Control Mode [0=Std Amb, 1=Low Amb] S S S S
P52 BV21 YT2_ S01_ P52 nvoYTS01p052 SNVT_switch (95) BD 21 0081 N/A 0/1 0/1 Local/Remote Control Mode [0=Local, 1=Remote] S S S S
TABLE 22 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

P53 BV22 YT2_ S01_ P53 nvoYTS01p053 SNVT_switch (95) BD 22 0082 N/A 0/1 0/1 Units [0=Imperial, 1=SI] S S S S
P54 BV23 YT2_ S01_ P54 nvoYTS01p054 SNVT_switch (95) BD 23 0083 N/A 0/1 0/1 Lead/Lag Control Mode [0=Manual, 1=Auto] S S S S
P55 BV24 YT2_ S01_ P55 nvoYTS01p055 SNVT_switch (95) BD 24 0084 N/A 0/1 0/1 Sys 2 Hot Gas Bypass Valve O O O O
P56 MV1 YT2_ S01_ P56 nvoYTS01p056 SNVT_count_f (51) ADI 1 0030 x1 None None Sys 1 Operational Code S S S S
P57 MV2 YT2_ S01_ P57 nvoYTS01p057 SNVT_count_f (51) ADI 2 0031 x1 None None Sys 1 Fault Code S S S S
P58 MV3 YT2_ S01_ P58 nvoYTS01p058 SNVT_count_f (51) ADI 3 0032 x1 None None Sys 2 Operational Code S S S S
P59 MV4 YT2_ S01_ P59 nvoYTS01p059 SNVT_count_f (51) ADI 4 0033 x1 None None Sys 2 Fault Code S S S S
P60 MV5 YT2_ S01_ P60 nvoYTS01p060 SNVT_count_f (51) ADI 5 0034 x1 None None Sys 1 Debug Code N N N N
P61 MV6 YT2_ S01_ P61 nvoYTS01p061 SNVT_count_f (51) ADI 6 0035 x1 None None Sys 1 Condenser Fan Stage S S S S
P62 MV7 YT2_ S01_ P62 nvoYTS01p062 SNVT_count_f (51) ADI 7 0036 x1 None None Sys 2 Debug Code N N N N
P63 MV8 YT2_ S01_ P63 nvoYTS01p063 SNVT_count_f (51) ADI 8 0037 x1 None None Sys 2 Condenser Fan Stage S S S S
P64 MV9 YT2_ S01_ P64 nvoYTS01p064 SNVT_count_f (51) ADI 9 0038 N N N N
YT2_ S01_ P65 Unit Control Mode [0=LW, 1=RW, 2=DA, 3=SP,
P65 MV10 nvoYTS01p065 SNVT_count_f (51) None None S S S S
ADI 10 0039 x1 4=CL, 5=HT]
P66 AV30 YT2_ S01_ P66 nvoYTS01p066 SNVT_count_f (51) ADF 30 0040 x1 None None Anti-Recycle Time Programmed S S S S
P67 AV31 YT2_ S01_ P67 nvoYTS01p067 SNVT_count_f (51) ADF 31 0041 x10 °F °C Leaving Chilled Liquid Temp Cutout S S S S
P68 AV32 YT2_ S01_ P68 nvoYTS01p068 SNVT_count_f (51) ADF 32 0042 x10 °F °C Low Ambient Temp Cutout S S S S
P69 AV33 YT2_ S01_ P69 nvoYTS01p069 SNVT_count_f (51) ADF 33 0043 x10 PSI BAR Low Suction Pressure Cutout Heating (HP) S S S S

Johnson Controls, Inc.

Scroll BAS(ISN) Subject to change without notice. 2 of 6

JOHNSON CONTROLS
ISSUE DATE: 10/24/2019
FORM 150.72-ICOM6
 04/17/2018
Eng BACnet Engineering
BACnet Object LON Profile N2 Modbus Point List Code: S = Standard O = Optional N = Not Available
Page Object LON SNVT Type Units
Name Name Metasys
Ref Typ/Ins Address Scale Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
P70 AV34 YT2_ S01_ P70 nvoYTS01p070 SNVT_count_f (51) ADF 34 0044 x10 PSI BAR Low Suction Pressure Cutout Cooling S S S S
P71 AV35 YT2_ S01_ P71 nvoYTS01p071 SNVT_count_f (51) ADF 35 0045 x10 PSI BAR High Discharge Pressure Cutout S S S S
P72 AV36 YT2_ S01_ P72 nvoYTS01p072 SNVT_count_f (51) ADF 36 0046 x10 °F °C Remote Setpoint S S S S
FORM 150.72-ICOM6

P73 AV37 YT2_ S01_ P73 nvoYTS01p073 SNVT_count_f (51) ADF 37 0047 x10 °F °C Cooling Range S S S S

JOHNSON CONTROLS
YT2_ S01_ P74 PSI BAR Remote Setpoint 2 (SP)
ISSUE DATE: 10/24/2019

P74 AV38 nvoYTS01p074 SNVT_count_f (51) O O O O

ADF 38 0048 x10 °F °C Remote Heating Setpoint (HP and YCWL HP)
YT2_ S01_ P75 PSI BAR Cooling Range 2 (SP)
P75 AV39 nvoYTS01p075 SNVT_count_f (51) O O O O
ADF 39 0049 x10 °F °C Heating Range (HP and YCWL HP)
P76 AV40 YT2_ S01_ P76 nvoYTS01p076 SNVT_count_f (51) ADF 40 0050 x10 °F °C Sys 1 Discharge Temperature (EEV) O O O O
P77 AV41 YT2_ S01_ P77 nvoYTS01p077 SNVT_count_f (51) ADF 41 0051 x10 °F (diff) °C (diff) Sys 1 Discharge Superheat (EEV) O O O O
P78 AV42 YT2_ S01_ P78 nvoYTS01p078 SNVT_count_f (51) ADF 42 0052 x10 °F °C Sys 2 Discharge Temperature (EEV) O O O O
P79 AV43 YT2_ S01_ P79 nvoYTS01p079 SNVT_count_f (51) ADF 43 0053 x10 °F (diff) °C (diff) Sys 2 Discharge Superheat (EEV) O O O O
P80 BV25 YT2_ S01_ P80 nvoYTS01p080 SNVT_switch (95) BD 25 0085 N N N N
P81 BV26 YT2_ S01_ P81 nvoYTS01p081 SNVT_switch (95) BD 26 0086 N N N N
P82 BV27 YT2_ S01_ P82 nvoYTS01p082 SNVT_switch (95) BD 27 0087 N N N N
P83 BV28 YT2_ S01_ P83 nvoYTS01p083 SNVT_switch (95) BD 28 0088 N N N N
P84 BV29 YT2_ S01_ P84 nvoYTS01p084 SNVT_switch (95) BD 29 0089 N/A 0/1 0/1 SCC Auto Detect Available N S S S
TABLE 22 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

Johnson Controls, Inc.

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SECTION 7 – UNIT CONTROLS

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168
SECTION 2

Eng BACnet Engineering

BACnet Object LON Profile N2 Modbus Point List Code: S = Standard O = Optional N = Not Available
Page Object LON SNVT Type Units
Name Name Metasys
Ref Typ/Ins Address Scale Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
P03 AV101 YT2_ S02_ P03 nviYTS02p003 SNVT_count_f (51) ADF 44 0101 N N N N
P04 AV102 YT2_ S02_ P04 nviYTS02p004 SNVT_count_f (51) ADF 45 0102 N N N N
P05 AV103 YT2_ S02_ P05 nviYTS02p005 SNVT_count_f (51) ADF 46 0103 N N N N
P06 AV104 YT2_ S02_ P06 nviYTS02p006 SNVT_count_f (51) ADF 47 0104 N N N N
P07 AV105 YT2_ S02_ P07 nviYTS02p007 SNVT_switch (95) BD 30 0161 N N N N
SECTION 7 – UNIT CONTROLS

P08 AV106 YT2_ S02_ P08 nviYTS02p008 SNVT_switch (95) BD 31 0162 N N N N

P09 AV107 YT2_ S02_ P09 nviYTS02p009 SNVT_switch (95) BD 32 0163 N N N N
P10 AV108 YT2_ S02_ P10 nviYTS02p010 SNVT_switch (95) BD 33 0164 N N N N
P11 AV109 YT2_ S02_ P11 nvoYTS02p011 SNVT_count_f (51) ADF 48 0105 N N N N
P12 AV110 YT2_ S02_ P12 nvoYTS02p012 SNVT_count_f (51) ADF 49 0106 N N N N
P13 AV111 YT2_ S02_ P13 nvoYTS02p013 SNVT_count_f (51) ADF 50 0107 N N N N
P14 AV112 YT2_ S02_ P14 nvoYTS02p014 SNVT_count_f (51) ADF 51 0108 N N N N
P15 AV113 YT2_ S02_ P15 nvoYTS02p015 SNVT_count_f (51) ADF 52 0109 N N N N
P16 AV114 YT2_ S02_ P16 nvoYTS02p016 SNVT_count_f (51) ADF 53 0110 N N N N
P17 AV115 YT2_ S02_ P17 nvoYTS02p017 SNVT_count_f (51) ADF 54 0111 N N N N
P18 AV116 YT2_ S02_ P18 nvoYTS02p018 SNVT_count_f (51) ADF 55 0112 x1 None None Sys 1 Comp 1 Run Hours N S S S
P19 AV117 YT2_ S02_ P19 nvoYTS02p019 SNVT_count_f (51) ADF 56 0113 x1 None None Sys 1 Comp 2 Run Hours N S S S
P20 AV118 YT2_ S02_ P20 nvoYTS02p020 SNVT_count_f (51) ADF 57 0114 x1 None None Sys 1 Comp 3 Run Hours N S S S
P21 AV119 YT2_ S02_ P21 nvoYTS02p021 SNVT_count_f (51) ADF 58 0115 N N N N
P22 AV120 YT2_ S02_ P22 nvoYTS02p022 SNVT_count_f (51) ADF 59 0116 N N N N
P23 AV121 YT2_ S02_ P23 nvoYTS02p023 SNVT_count_f (51) ADF 60 0117 N N N N
P24 AV122 YT2_ S02_ P24 nvoYTS02p024 SNVT_count_f (51) ADF 61 0118 N N N N
P25 AV123 YT2_ S02_ P25 nvoYTS02p025 SNVT_count_f (51) ADF 62 0119 N N N N
P26 AV124 YT2_ S02_ P26 nvoYTS02p026 SNVT_count_f (51) ADF 63 0120 N N N N
P27 AV125 YT2_ S02_ P27 nvoYTS02p027 SNVT_count_f (51) ADF 64 0121 x1 None None Sys 2 Comp 1 Run Hours N S S S
P28 AV126 YT2_ S02_ P28 nvoYTS02p028 SNVT_count_f (51) ADF 65 0122 x1 None None Sys 2 Comp 2 Run Hours N S S S
P29 AV127 YT2_ S02_ P29 nvoYTS02p029 SNVT_count_f (51) ADF 66 0123 x1 None None Sys 2 Comp 3 Run Hours N S S S
P30 AV128 YT2_ S02_ P30 nvoYTS02p030 SNVT_count_f (51) ADF 67 0124 N N N N
TABLE 22 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

P31 AV129 YT2_ S02_ P31 nvoYTS02p031 SNVT_count_f (51) ADF 68 0125 N N N N
P32 AV130 YT2_ S02_ P32 nvoYTS02p032 SNVT_count_f (51) ADF 69 0126 N N N N
P33 AV131 YT2_ S02_ P33 nvoYTS02p033 SNVT_count_f (51) ADF 70 0127 N N N N
P34 AV132 YT2_ S02_ P34 nvoYTS02p034 SNVT_count_f (51) ADF 71 0128 N N N N
P35 AV133 YT2_ S02_ P35 nvoYTS02p035 SNVT_count_f (51) ADF 72 0129 N N N N
P36 BV105 YT2_ S02_ P36 nvoYTS02p036 SNVT_switch (95) BD 34 0165 N/A 0/1 0/1 Option Indicator [0=Disabled, 1=Enabled] N S S S
P37 BV106 YT2_ S02_ P37 nvoYTS02p037 SNVT_switch (95) BD 35 0166 N N N N
P38 BV107 YT2_ S02_ P38 nvoYTS02p038 SNVT_switch (95) BD 36 0167 N N N N
P39 BV108 YT2_ S02_ P39 nvoYTS02p039 SNVT_switch (95) BD 37 0168 N N N N
P40 BV109 YT2_ S02_ P40 nvoYTS02p040 SNVT_switch (95) BD 38 0169 N N N N
P41 BV110 YT2_ S02_ P41 nvoYTS02p041 SNVT_switch (95) BD 39 0170 N N N N
P42 BV111 YT2_ S02_ P42 nvoYTS02p042 SNVT_switch (95) BD 40 0171 N N N N
P43 BV112 YT2_ S02_ P43 nvoYTS02p043 SNVT_switch (95) BD 41 0172 N N N N
P44 BV113 YT2_ S02_ P44 nvoYTS02p044 SNVT_switch (95) BD 42 0173 N N N N
P45 BV114 YT2_ S02_ P45 nvoYTS02p045 SNVT_switch (95) BD 43 0174 N N N N
P46 BV115 YT2_ S02_ P46 nvoYTS02p046 SNVT_switch (95) BD 44 0175 N N N N
P47 BV116 YT2_ S02_ P47 nvoYTS02p047 SNVT_switch (95) BD 45 0176 N/A 0/1 0/1 Expansion Valve Type [0=TXV, 1=EEV] N S S S

Johnson Controls, Inc.

JOHNSON CONTROLS
ISSUE DATE: 10/24/2019
FORM 150.72-ICOM6

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 04/17/2018

Eng BACnet Engineering

BACnet Object LON Profile N2 Modbus Point List Code: S = Standard O = Optional N = Not Available
Page Object LON SNVT Type Units
Name Name Metasys
Ref Typ/Ins Address Scale Imperial SI Point List Description 1 2 3 4 5 6 7 8 9 10
P48 BV117 YT2_ S02_ P48 nvoYTS02p048 SNVT_switch (95) BD 46 0177 N/A 0/1 0/1 YCWL Mode [0=Chiller, 1=Heatpump] N O O O
P49 BV118 YT2_ S02_ P49 nvoYTS02p049 SNVT_switch (95) BD 47 0178 N N N N
P50 BV119 YT2_ S02_ P50 nvoYTS02p050 SNVT_switch (95) BD 48 0179 N/A 0/1 0/1 SCC Auto Detect Digit 1 N S S S
FORM 150.72-ICOM6

P51 BV120 YT2_ S02_ P51 nvoYTS02p051 SNVT_switch (95) BD 49 0180 N/A 0/1 0/1 SCC Auto Detect Digit 2 N S S S

JOHNSON CONTROLS
P52 BV121 YT2_ S02_ P52 nvoYTS02p052 SNVT_switch (95) BD 50 0181 N/A 0/1 0/1 SCC Auto Detect Digit 3 N S S S
ISSUE DATE: 10/24/2019

P53 BV122 YT2_ S02_ P53 nvoYTS02p053 SNVT_switch (95) BD 51 0182 N/A 0/1 0/1 SCC Auto Detect Digit 4 N S S S
P54 BV123 YT2_ S02_ P54 nvoYTS02p054 SNVT_switch (95) BD 52 0183 N/A 0/1 0/1 SCC Auto Detect Digit 5 N S S S
P55 BV124 YT2_ S02_ P55 nvoYTS02p055 SNVT_switch (95) BD 53 0184 N/A 0/1 0/1 SCC Auto Detect Digit 6 N S S S
P56 MV101 YT2_ S02_ P56 nvoYTS02p056 SNVT_count_f (51) ADI 25 0130 x1 None None Refrigerant [0=R-22, 1=R-407c, 2=R-410a] N S S S
P57 MV102 YT2_ S02_ P57 nvoYTS02p057 SNVT_count_f (51) ADI 26 0131 N N N N
P58 MV103 YT2_ S02_ P58 nvoYTS02p058 SNVT_count_f (51) ADI 27 0132 N N N N
P59 MV104 YT2_ S02_ P59 nvoYTS02p059 SNVT_count_f (51) ADI 28 0133 N N N N
P60 MV105 YT2_ S02_ P60 nvoYTS02p060 SNVT_count_f (51) ADI 29 0134 N N N N
P61 MV106 YT2_ S02_ P61 nvoYTS02p061 SNVT_count_f (51) ADI 30 0135 N N N N
P62 MV107 YT2_ S02_ P62 nvoYTS02p062 SNVT_count_f (51) ADI 31 0136 N N N N
P63 MV108 YT2_ S02_ P63 nvoYTS02p063 SNVT_count_f (51) ADI 32 0137 N N N N
P64 MV109 YT2_ S02_ P64 nvoYTS02p064 SNVT_count_f (51) ADI 33 0138 N N N N
P65 MV110 YT2_ S02_ P65 nvoYTS02p065 SNVT_count_f (51) ADI 34 0139 N N N N
P66 AV130 YT2_ S02_ P66 nvoYTS02p066 SNVT_count_f (51) ADF 73 0140 N N N N
P67 AV131 YT2_ S02_ P67 nvoYTS02p067 SNVT_count_f (51) ADF 74 0141 N N N N
P68 AV132 YT2_ S02_ P68 nvoYTS02p068 SNVT_count_f (51) ADF 75 0142 N N N N
P69 AV133 YT2_ S02_ P69 nvoYTS02p069 SNVT_count_f (51) ADF 76 0143 N N N N
P70 AV134 YT2_ S02_ P70 nvoYTS02p070 SNVT_count_f (51) ADF 77 0144 N N N N
P71 AV135 YT2_ S02_ P71 nvoYTS02p071 SNVT_count_f (51) ADF 78 0145 N N N N
P72 AV136 YT2_ S02_ P72 nvoYTS02p072 SNVT_count_f (51) ADF 79 0146 N N N N
P73 AV137 YT2_ S02_ P73 nvoYTS02p073 SNVT_count_f (51) ADF 80 0147 N N N N
P74 AV138 YT2_ S02_ P74 nvoYTS02p074 SNVT_count_f (51) ADF 81 0148 N N N N
P75 AV139 YT2_ S02_ P75 nvoYTS02p075 SNVT_count_f (51) ADF 82 0149 N N N N
P76 AV140 YT2_ S02_ P76 nvoYTS02p076 SNVT_count_f (51) ADF 83 0150 N N N N
P77 AV141 YT2_ S02_ P77 nvoYTS02p077 SNVT_count_f (51) ADF 84 0151 N N N N
P78 AV142 YT2_ S02_ P78 nvoYTS02p078 SNVT_count_f (51) ADF 85 0152 N N N N
TABLE 22 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

P79 AV143 YT2_ S02_ P79 nvoYTS02p079 SNVT_count_f (51) ADF 86 0153 N N N N
P80 BV125 YT2_ S02_ P80 nvoYTS02p080 SNVT_switch (95) BD 54 0185 N N N N
P81 BV126 YT2_ S02_ P81 nvoYTS02p081 SNVT_switch (95) BD 55 0186 N N N N
P82 BV127 YT2_ S02_ P82 nvoYTS02p082 SNVT_switch (95) BD 56 0187 N N N N
P83 BV128 YT2_ S02_ P83 nvoYTS02p083 SNVT_switch (95) BD 57 0188 N N N N
P84 BV129 YT2_ S02_ P84 nvoYTS02p084 SNVT_switch (95) BD 58 0189 N/A 0/1 0/1 Units [0=Imperial, 1=Metric] N S S S

NOTES
1 LON SNVTs used: SNVT_count_f (51) and SNVT_switch (95). Must use LON eLink.
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 configurable
2
values that are all UNSIGNED. Modbus function types supported: ENG P03-P06 = Types 03, 06, 16; ENG P07-P10 = 01, 03, 05, 06, 15, 16; ENG P36-P55 & P80-84 = 01, 02, 03
3 BACnet engineering units shown with an Asterisk (*) will be assigned a BACnet engineering unit type of 95 - No Units.
Status codes: Special display characters such as ( ) [ ] { } / \ % < > are not compatible with eLink N2 formats. Substitute text strings "-", PCT, GTN will be used. String lengths are limited to 60 total
4
characters, including spaces.
5
6
7
8
9
10

Johnson Controls, Inc.

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Subject to change without notice.
SECTION 7 – UNIT CONTROLS

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Code Code
Operational Code Fault/Inhibit Code
Value Value
0 No Abnormal Condition 0 No Fault Code
1 Unit Switch Off 1
2 System Switch Off 2 Low Ambient Temperature
3 Lockout 3
4 Unit Fault 4 Low Leaving Chilled Liquid Temp
5 System Fault 5 High Discharge Pressure
6 Remote Shutdown 6
7 Daily Schedule Shutdown 7 Low Suction Pressure
SECTION 7 – UNIT CONTROLS

8 No Run Permissive 8
9 No Cool Load 9
10 Anti-Coincidence Timer Active 10
11 Anti-Recycle Timer Active 11
12 Manual Override 12
13 Suction Limiting 13
14 Discharge Limiting 14
15 15
16 Load Limiting 16
17 Compressor(s) Running 17
18 Heatpump Load Limiting 18 MP/HPCO Fault
19 19 Low Evaporator Temperature
20 20
21 21
22 22 Unit Motor Current
23 23 Low Superheat
24 24 Sensor Fault
25 25 Discharge Inhibit
26 26 MP/HPCO Inhibit
27 27 Pump Trip
28 28 Pump Fail Make Flow
29 29 High Ambient Temperature
30 30 Anti-Vacuum Low Pressure Cutout
31 31
TABLE 22 - YORKTALK 2 COMMUNICATIONS DATA MAP (CONT’D)

32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
40 40
41 41
42 42
43 43
44 44
45 45
46 46
47 47
48 48
49 49
50 50

Johnson Controls, Inc.

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JOHNSON CONTROLS
ISSUE DATE: 10/24/2019
FORM 150.72-ICOM6
FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 8 – UNIT OPERATION

Unit Operating Sequence

The operating sequence described below relates to op- 7. As the load decreases below set point, the com-
eration on a hot water start after power has been ap- pressors will be shut down in sequence. This will
plied, such as start-up commissioning. When a com- occur at intervals of either 60, 30, or 20 seconds
pressor starts, internal timers limit the minimum time based on water temperature as compared to set
before another compressor can start to 1 minute. point, and control mode. See Leaving Chilled Liq-
uid Control on page 172 for a detailed explana-
1. For the chiller system to run, the Flow Switch
tion.
must be closed, any remote cycling contacts must
be closed, the Daily Schedule must not be sched- 8. When the last compressor in a “system” (two or
uling the chiller OFF, and temperature demand three compressors per system), is to be cycled
must be present. OFF, the system will initiate a pump-down. Each
“system” has a pump-down feature upon shut-off.
2. When power is applied to the system, the micro-
On a non-safety, non-unit switch shutdown, the
processor will start a 2 minute timer. This is the
LLSV will be turned OFF and the last compressor
same timer that prevents an instantaneous start af-
will be allowed to run until the suction pressure
ter a power failure.
falls below the suction pressure cutout or for 180
3. At the end of the 2 minute timer, the micropro- seconds, whichever comes first.
cessor will check for cooling demand. If all con-
ditions allow for start, a compressor on the lead CAPACITY CONTROL
system will start and the liquid line solenoid will To initiate the start sequence of the chiller, all run per-
open. Coincident with the start, the anti-coinci- missive inputs must be satisfied (flow/remote start/stop
dent timer will be set and begin counting down- switch), and no chiller or system faults exist.
ward from “60” seconds to “0” seconds.
The first phase of the start sequence is initiated by the
If the unit is programmed for Auto Lead/Lag, the Daily Schedule Start or any Remote Cycling Device. If
system with the shortest average run-time of the the unit is shut down on the daily schedule, the chilled
compressors will be assigned as the “lead” sys- water pump contacts (Terminals 23 and 24 of XTBC2)
tem. A new lead/lag assignment is made whenever will close to start the pump when the daily schedule
all systems shut down. start time has been reached. Once flow has been es-
4. Several seconds after the compressor starts, that tablished and the flow switch closes, capacity control
systems first condenser fan will be cycled ON functions are initiated, if the remote cycling contacts 8
(outdoor air temperature more than 25°F (-4°C) wired in series with the flow switch are closed.
or discharge pressure). See Standard Condenser
It should be noted that the chilled water pump contacts
Fan Control on page 176 for details concerning
(Terminals 23 and 24 of XTBC2) are not required to
condenser fan cycling.
be used to cycle the chilled water pump. However, in
5. After 1 minute of compressor run time, the next all cases the flow switch must be closed to allow unit
compressor in sequence will start when a sys- operation.
tem has to load. Additional compressors will be
The control system will evaluate the need for cooling
started at 60 second intervals as needed to satisfy
by comparing the actual leaving or return chilled liquid
temperature set point.
temperature to the desired set point, and regulate the
6. If demand requires, the lag system will cycle leaving or return chilled liquid temperature to meet that
ON with the same timing sequences as the lead desired set point.
system after the lead system has run for five min-
utes. See the section on Capacity Control for a
detailed explanation of system and compressor
staging.

JOHNSON CONTROLS 171

 FORM 150.72-ICOM6
SECTION 8 – UNIT OPERATION
ISSUE DATE: 10/24/2019

SUCTION PRESSURE LIMIT CONTROLS If after 60 seconds of run-time the leaving chilled liq-
uid temperature is still above the Set Point High Limit,
The anticipatory controls are intended to prevent the
the next compressor in sequence will be energized.
unit from ever actually reaching a low-pressure cut-
Additional compressors will be energized at a rate of
out. Loading is prevented, if the suction pressure drops
once every 60 seconds if the chilled liquid temperature
below 1.15 x suction pressure cutout (15% below the
remains above the Set Point High Limit and the chilled
cutout). Loading may reoccur after suction pressure
liquid temperature is dropping less than 3 °F/min. The
rises above the unload point and a period of one min-
lag system will not be allowed to start a compressor
ute elapses. This control is only operable if the optional
until the lead system has run for 5 minutes.
suction pressure transducers are installed.
If the chilled liquid temperature falls below the Set
DISCHARGE PRESSURE LIMIT CONTROLS Point High Limit but is greater than the Set Point Low
Limit, loading and unloading do not occur. This area of
The discharge pressure limit controls unload a system
control is called the control range.
before it reaches a safety limit due to high load or dirty
condenser coils. The microprocessor monitors dis- If the chilled liquid temperature drops to between Set
charge pressure and unloads a system, if fully loaded, Point Low Limit and 0.5°F (0.28°C) below the Set
by one compressor when discharge pressure exceeds Point Low Limit, unloading (a compressor turns OFF)
the programmed cutout minus 10 psig (0.69 barg). Re- occurs at a rate of 1 every 30 seconds. If the chilled
loading will occur when the discharge pressure on the liquid temperature falls to a value greater than 0.5°F
affected system drops to 85% of the unload pressure (0.28°C) below the Set Point Low Limit but not greater
and 10 minutes have elapsed. than 1.5°F (0.83°C) below the Set Point Low Limit,
This control is only applicable if optional discharge unloading occurs at a rate of 20 seconds. If the chilled
pressure transducers are installed. liquid temperature falls to a value greater than 1.5°F
(0.83°C) below the Set Point Low Limit, unloading oc-
LEAVING CHILLED LIQUID CONTROL curs at a rate of 10 seconds. If the chilled liquid tem-
perature falls below 1°F above the low chilled liquid
The set point, when programmed for Leaving Chilled temperature cutout, unloading occurs at a rate of 10
Liquid Control, is the temperature the unit will control seconds if it is greater than 10 seconds.
to within plus or minus the (control) cooling range. The
Set Point High Limit is the Set Point plus the Cooling In water cooling mode on R-410A chillers, the mini-
Range. The Set Point Low Limit is the Set Point minus mum low limit of the control range will be 40.0ºF. For
the Cooling Range. Figure 30 below should be used to leaving chilled liquid temperature set point and control
aid in understanding the following description of Leav- range combinations that result in the low limit of the
ing Chilled Liquid Control. control range being below 40.0ºF, the low limit will be
reset to 40.0ºF and the difference will be added to the
30 sec. Contol Range 60 sec. high limit. This will result in a control range the same
unloading (no compressor staging) loading size as programmed but not allow the unit to run below
40.0ºF. This control will not affect glycol chillers.
LWT Hot gas, if present, will be the final step of capacity. Hot
44.0 ºF 46.0 ºF 48.0 ºF
(6.7 ºC) (7.8 ºC) (8.9 ºC)
gas is energized when only a single compressor is run-
Low Limit Setpoint High Limit ning and LWT is less than SP. Hot gas is turned OFF
as temperature rises when LWT is more than SP plus
Leaving Water Temp. Control - Compressor Staging
Setpoint = 46.0 ºF (7.8 ºC) Range = +/-2 ºF (1.1 ºC) CR/2. If temperature remains below the set point low
LD14404 limit on the lowest step of capacity, the microprocessor
Figure 45 - LEAVING WATER TEMPERATURE will close the liquid line solenoid, after turning off hot
CONTROL EXAMPLE gas, and pump the system down before turning off the
last compressor in a system.
If the leaving chilled liquid temperature is above the The leaving chilled liquid set point is programmable
Set Point High Limit, the lead compressor on the lead from 40°F to 70°F (4.4°C to 21.1°C) in water chilling
system will be energized along with the liquid line so- mode and from 10°F to 70°F (-12.2°C to 21.1°C) in
lenoid. Upon energizing any compressor, the 60 sec- glycol chilling mode. In both modes, the cooling range
ond Anti-Coincidence timer will be initiated to prevent can be from plus or minus1.5°F to plus or minus 2.5°F
multiple compressors from turning ON. (plus or minus 0.83°C to 1.39°C).leaving chilled liquid
control.
172 JOHNSON CONTROLS
FORM 150.72-ICOM6
SECTION 8 – UNIT OPERATION
ISSUE DATE: 10/24/2019

Table 23 - SAMPLE COMPRESSOR STAGING FOR RETURN WATER CONTROL

COMPRESSOR STAGING FOR RETURN WATER CONTROL
4 COMPRESSOR
COOLING SET POINT = 45 °F (7.2 °C) RANGE = 10 °F (5.6 °C)
# OF COMP ON 0 * 1+HG 1 2 3 4
45°F 46.25°F 47.5°F 50.0°F 52.5°F 55.0°F
RWT
(7.2°C) (7.9°C) (8.6°C) (10.0°C) (11.4°C) (12.8°C)

*Unloading only

LEAVING CHILLED LIQUID CONTROL

SETPOINT ADJUST (DEG. F)

OVERRIDE TO REDUCE CYCLING
6
To avoid compressor cycling the microprocessor will 5
adjust the set point upward temporarily. The last run 4
time of the system will be saved. If the last run time 3
2
was greater than 5 minutes, no action is to be taken. 1
If the last run time for the lead system was less than 5 0
minutes, the microprocessor will increase the set point 0 1 2 3 4 5 6
high limit according to the chart at right, with a maxi-
LAST RUN TIME OF LEAD SYSTEM (MINUTES)
mum value allowed of 50°F (see Figure 29 on page LD11415
152).
Figure 46 - SET POINT ADJUST
If adding the set point adjust value to the set point high
limit causes the set point high limit to be greater than
50°F, the set point high limit will be set to 50°F, and
the difference will be added to the set point low limit.
Once a system runs for greater than 5 minutes, the set
point adjust will be set back to 0. This will occur while
the system is still running.

Table 24 - RETURN CHILLED LIQUID CONTROL FOR 4 COMPRESSORS (6 STEPS) 8

*STEP COMPRESSOR COMPRESSOR ON POINT COMPRESSOR OFF POINT
0 0 SET POINT SET POINT
1 1 W/HGB SP + CR/8 (Note 1) SET POINT
2 1 NO HGB SP + CR/4 SP + CR/8
3 2 SP + 2*CR/4 (Note 2) SP + CR/4
4 2 SP + 2*CR/4 SP + CR/4 (Note 3)
5 3 SP + 3*CR/4 SP + 2*CR/4
6 4 SP + CR SP + 3*CR/4

NOTES:
1. Step 1 is Hot Gas Bypass and is skipped when loading occurs. Hot Gas Bypass operation is inhibited during Pumpdown.
2. Step 3 is skipped when loading occurs.
3. Step 4 is skipped when unloading occurs.
* STEP can be viewed using the OPER DATA key and scrolling to COOLING DEMAND.

JOHNSON CONTROLS 173

 FORM 150.72-ICOM6
SECTION 8 – UNIT OPERATION
ISSUE DATE: 10/24/2019

LEAVING CHILLED LIQUID SYSTEM LEAD/ RETURN CHILLED LIQUID CONTROL

LAG AND COMPRESSOR SEQUENCING
(Can be used on Dual System 4, 5 and 6 Comp
A Lead/Lag option may be selected to help equalize Units Only)
average run hours between systems with 2 refriger- Return chilled liquid control is based on staging the
ant systems. This may be programmed under the OP- compressors to match the cooling load. The chiller
TIONS key. Auto Lead/Lag allows automatic Lead/ will be fully loaded when the return water temperature
Lag of the two systems based on average run hours of is equal to the Cooling Set Point plus the Range. The
the compressors in each system. Manual Lead/Lag se- chiller will be totally unloaded (all compressors OFF)
lects specifically the sequence which the microproces- when the return water temperature is equal to the Cool-
sor starts systems. ing Set Point (See sample in Table 23 on page 173).
At return water temperatures between the Cooling Set
On a hot water start, once a system starts, it will turn Point and Cooling Set Point plus Range, compressor
ON all compressors before the next system starts a loading and unloading will be determined by the for-
compressor. The microprocessor will sequence com- mulas in Table 24 on page 173.
pressors within each circuit to maximize individual
compressor run time on individual compressors within Return Chilled Liquid Control MUST
a system to prevent short cycling. only be used when constant chilled liquid
flow is ensured.
Each compressor in a system will be assigned an arbi- The range MUST always be programmed
trary priority number 1, 2, or 1, 2, 3. The non-running to equal the temperature drop across
compressor within a system with the lowest priority the evaporator when the chiller is “fully
number will always be the next compressor to start. loaded”. Otherwise, chilled liquid tem-
The running compressor with priority number 1 will al- perature will over or under shoot. Variable
ways be the next to shut OFF. Whenever a compressor flow must never be used in return chilled
is shut OFF, the priority numbers of all compressors liquid mode.
will be decreased by 1 with wrap-around. This control
scheme assures the same compressor does not repeat- Normal loading will occur at intervals of 60 seconds
edly cycle ON and OFF. according to the temperatures determined by the for-
mulas. Unloading will occur at a rate of 30 seconds ac-
Once the second system starts a compressor on a 2 sys- cording to the temperatures determined in the formulas
tem chillers, the microprocessor will attempt to equally used to calculate the ON and OFF points for each step
load each system as long as the system is not limit- of capacity.
ing or pumping down. Once this occurs, loading and
unloading will alternate between systems, loading the The return chilled liquid set point is programmable
lead system first or unloading the lag system first. from 40°F to 70°F (4.4°C to 21.1°C) in water chilling
mode and from 10°F to 70°F (-12.2°C to 21.1°C) in
glycol chilling mode. In both modes, the cooling range
can be from 4°F to 20°F (2.2°C to 11.1°C).

Table 25 - LEAD/LAG RETURN CHILLED LIQUID CONTROL FOR 4 COMPRESSORS (6 STEPS)

LEAD SYSTEM LAG SYSTEM
STEP COMP 1 COMP 2 - COMP 1 COMP 2 -
0 OFF OFF - OFF OFF -
1 ON + HG OFF - SEE NOTE 1 OFF OFF -
2 ON OFF - OFF OFF -
3 ON OFF - SEE NOTE 2 ON OFF -
4 ON ON - SEE NOTE 3 OFF OFF -
5 ON ON - ON OFF -
6 ON ON - ON ON -
NOTES 1
 . Step is Hot Gas Bypass and is skipped when loading occurs. Hot Gas Bypass operation is inhibited during pumpdown. For Leaving
Chilled Liquid Control the Hot Gas Bypass solenoid is energized only when the lead compressor is running and the LWT < SP, the
Hot Gas Bypass solenoid is turned off when the LWT more than SP + CR/2.
2. Step 3 is skipped when loading occurs.
3. Step 4 is skipped when unloading occurs.

174 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 8 – UNIT OPERATION
ISSUE DATE: 10/24/2019

As an example of compressor staging (See Table 24 sor run time for the purpose of lubrication. It will also
on page 173), a chiller with six compressors using a prevent the same compressor from starting 2 times in
Cooling Set Point programmed for 45°F (7.20°C) and a a row. The microprocessor will not attempt to equalize
Range Set Point of 10°F (5.56°C). Using the formulas run time on individual compressors within a system.
in Table 24 on page 173, the control range will be Each compressor in a system will be assigned an ar-
split up into six (seven including hot gas) segments, bitrary number 1, or 2. The non-running compressor
with the Control Range determining the separation be- within a system with the lowest priority number will
tween segments. Note also that the Cooling Set Point is always be the next compressor to start. The running
the point at which all compressors are OFF, and Cool- compressor with priority number 1 will always be the
ing Set Point plus Range is the point all compressors next compressor to shut OFF. Whenever a compressor
are ON. Specifically, if the return water temperature is is shut OFF, the priority numbers of all compressors
55°F (12.8°C), then all compressors will be ON, pro- in each system will be decreased by 1 with the wrap
viding full capacity. At nominal gpm, this would pro- around. This control scheme assures the same com-
vide approximately 45°F (7.2°C) leaving water tem- pressor does not repeatedly cycle ON and OFF.
perature out of the evaporator.
ANTI-RECYCLE TIMER
If the return water temperature drops to 53.4°F (11.9°C),
one compressor would cycle OFF leaving five com- The programmable anti-recycle timer assures that sys-
pressors running. The compressors would continue to tems do not cycle. This timer is programmable under
cycle OFF approximately every 1.7°F (0.94°C), with the PROGRAM key between 300 and 600 seconds.
the exception of hot gas bypass. Notice that the hot gas Whenever possible, to reduce cycling and motor heat-
bypass would cycle ON when the return water tem- ing, the anti-recycle timer should be adjusted to 600
perature dropped to 46.25°F (7.9°C). At this point one seconds. The programmable anti-recycle timer starts
compressor would be running with hot gas. the timer when the first compressor in a system starts.
The timer begins to count down. If all of the compres-
Should the return water temperature rise from this point
sors in a circuit cycle OFF, a compressor within the cir-
to 46.7°F (8.2°C), the hot gas bypass would shut OFF,
cuit will not be permitted to start until the anti-recycle
still leaving one compressor running. As the load in-
timer has timed out. If the lead system has run for less
creased, the compressors would stage ON every 1.7°F
than 5 minutes, 3 times in a row, the anti-recycle timer
(0.94°C).
will be extended to 10 minutes.
Also note that Table 24 on page 173 not only pro-
vides the formulas for the loading (ON POINT) and ANTI-COINCIDENCE TIMER
unloading (OFF POINT) of the system, the “STEP” is This timer is not present on single-system units. Two
also shown in the table. The “STEP” is the increment timing controls are present in software to assure com-
in the sequence of the capacity control scheme that can pressors within a circuit or between systems, do not 8
be viewed under the OPER DATA key. See Display/ start simultaneously. The anti-coincidence timer as-
Print Keys on page 131 for specific information on sures there is at least a one minute delay between sys-
the OPER DATA key. tem starts on 2-circuit systems. This timer is NOT pro-
grammable. The load timers further assure that there
RETURN CHILLED LIQUID SYSTEM LEAD/ is a minimum time between compressor starts within
LAG AND COMPRESSOR SEQUENCING a system.
A Lead/Lag option may be selected to help equalize
EVAPORATOR PUMP CONTROL AND YORK
average run hours between systems with 2 refriger-
HYDRO KIT PUMP CONTROL
ant systems. This may be programmed under the OP-
TIONS key. Auto Lead/Lag of the 2 systems based on The evaporator pump dry contacts (XTBC2 – Termi-
average run hours of the compressors in each system. nals 23 and 24) are energized when any of the follow-
Manual Lead/Lag selects specifically the sequence ing conditions are true:
which the microprocessor starts the systems.
1. Low Leaving Chilled Liquid Fault
The microprocessor will sequence compressors load
2. Any compressor is running
and unload systems according to Table 25 on page
174. The microprocessor will lead/lag compressors 3. Daily Schedule is ON, Unit Switch is ON and Re-
within each circuit to maximize individual compres- mote Stop is closed

JOHNSON CONTROLS 175

 FORM 150.72-ICOM6
SECTION 8 – UNIT OPERATION
ISSUE DATE: 10/24/2019

The pump will not run if the microprocessor panel for the next stage is decreased 20 psig and ramped back
has been powered up for less than 30 seconds or if the to the programmed off pressure minus the differential
pump has run in the last 30 seconds to prevent pump over the next 20 seconds.
motor overheating. Condenser fan locations are shown in Figure 47 on
Whenever the option “YORK HYDRO KIT PUMPS = page 177. Detailed Standard Fan Control operation
1” is selected under the OPTIONS key, the pump con- is shown in Table 26 on page 178 and Table 27 on
trol will be as described above. DO NOT SELECT the page 179.
option “YORK HYDRO KIT PUMPS = 2” under the
OPTIONS key. If a dual pump option is installed, the VSD FAN
active pump is selected by the selector switch. VSD fans are equipped and controlled to extend the
minimum starting ambient temperature to -10°F
EVAPORATOR HEATER CONTROL
(-23.3°C).
The evaporator heater is controlled by ambient air tem-
perature. When the ambient temperature drops below The number of compressors running in the system, the
40°F (4.4°C) the heater is turned ON. When the tem- programmed fan speed references, and the fan ramp
perature rises above 45°F (7.2°C) the heater is turned speed determine the speed of the VSD.
OFF. An under voltage condition will keep the heater For the YLAA fan speed control, there are the follow-
OFF until full voltage is restored to the system. ing options:
PUMPDOWN CONTROL • SINGLE SPEED or STANDARD fans
Each system has a pump-down feature upon shut-off. • YLAA TWO SPEED FANS
Manual pumpdown from the keypad is not possible.
On a non-safety, non-unit switch shutdown, all com- • YLAA VSD FANS
pressors but one in the system will be shut OFF. The To enable fan inverter control, set the fan speed control
LLSV will also be turned OFF. The final compressor in SERVICE MODE to YLAA VSD FANS.
will be allowed to run until the suction pressure falls
below the cutout, or for 180 seconds, whichever comes CHANGING THE SWITCH POINT OF THE
first. THERMAL DISPERSION FLOW SWITCH
To change the factory-set LED 7, complete the follow-
STANDARD CONDENSER FAN CONTROL
ing steps:
Condenser fan operation must be programmed with
the OPTIONS key under “Fan Control.” Condenser 1. Press the ◄ or ► push button. The switch point
fan must be selected for Discharge Pressure only. Fan LED flashes.
control by discharge pressure will work according to 2. Press the ◄ or ► push button as many times as re-
the tables on the following pages (see Table 26 on page quired in less than 2 seconds between each press.
178 and Table 27 on page 179). The fan control on Each press of the push button shifts the LED by
pressure and fan differential off-pressure are program- one position in the indicated direction.
mable under the PROGRAM key. Standard fan control
operates down to a temperature of 25°F. 3. Stop pressing the button when the switch posi-
tion LED changes to the required position. The
The delay between turning ON and OFF fan stages is flow switch automatically returns to the operating
always fixed at 5 seconds. mode with the new setting in 2 seconds.
When a fan stage is turned ON by pressure, the on
4. To prevent unintentional settings, press both push
pressure for the next stage is increased 20 psig and
buttons simutaneously for at least 10 seconds in
ramped back to the programmed on pressure over the
operating mode to lock the switch electronically.
next 20 seconds. Typically, standard ambient control
To unlock the flow switch, perform the same oper-
on pressure should be programmed at 385 psig with a
ation again. The setting remains the same in case
differential of 125 psig.
of power failure.
When a fan stage is turned OFF (programmed on pres-
sure minus programmed differential), the off pressure

176 JOHNSON CONTROLS

FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

YLAA0041HE, YLAA0048HE,
YLAA0058HE, YLAA0065HE,
YLAA0070SE, YLAA0080SE,
YLAA0081HE, YLAA0082HE, YLAA0092HE, YLAA0115SE,
YLAA0089SE YLAA0100SE YLAA0101HE YLAA0120SE,

=2-MF1 =1-MF2 =2-MF1 =1-MF2 =2-MF1 =2-MF2 =1-MF2 =2-MF1 =1-MF2 =1-MF3

=2-MF2

=2-MF2 =1-MF1 =2-MF3 =1-MF1 =2-MF3 =2-MF4 =1-MF1 =2-MF3 =2-MF2 =1-MF1

YLAA0125HE, YLAA0136SE, YLAA0139HE,

YLAA0150SE, YLAA0155SE YLAA0142HE

=2-MF1 =1MF5 =1-MF4 =1-MF3

=2-MF1 =2-MF2 =1-MF4 =1-MF3

=2-MF3 =2-MF2 =1-MF2 =1-MF1

=2-MF3 =2-MF4 =1-MF2 =1-MF1

YLAA0170SE, YLAA0175HE YLAA0156HE

=2-MF1 =2-MF2 =1-MF5 =1-MF4 =1-MF3 =2-MF1 =2-MF2 =1-MF6 =1-MF5 =1-MF4

=2-MF3 =2-MF4 =2-MF5 =1-MF2 =1-MF1 =2-MF3 =2-MF4 =1-MF3 =1-MF2 =1-MF1

8
YLAA0200HE, YLAA0230HE

=2-MF1 =2-MF2 =2-MF3 =1-MF6 =1-MF5 =1-MF4

=2-MF4 =2-MF5 =2-MF6 =1-MF3 =1-MF2 =1-MF1

LD27281a

Figure 47 - CONDENSER FAN LOCATIONS

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Table 26 - YLAA STANDARD CONDENSER FAN CONTROL USING DISCHARGE PRESSURE ONLY (2, 3,
OR 4 FANS PER SYSTEM)
FAN
FAN IPUII I/O OUTPUT FAN #
ON* OFF** CONTACTOR
STAGE
SYS 1 SYS 2 SYS 1 SYS 2 SYS 1 SYS 2
DP < PROGRAMMED
FAN CONTROL ON
DP > PROGRAMMED
PRESSURE MINUS
1 FAN CONTROL ON 7B7-8 TB10-8 1-KF1 2-KF1 1-MF1 2-MF2
PROGRAMMED DIF-
PRESSURE
FERENTIAL PRES-
SURE
DP < PROGRAMMED
FAN CONTROL ON
DP > PROGRAMMED
PRESSURE MINUS
FAN CONTROL ON TB7-8 TB10-8 1-KF1 2-KF1 1-MF1 2-MF1
PROGRAMMED DIF-
2 PRESSURE AND FAN and and and and and and
FERENTIAL PRES-
STAGE 1 IS ENER- TB7-9 TB10-9 1-KF2 2-KF2 1-MF2 2-MF2
SURE AND FAN
GIZED
STAGE 1 IS ENER-
GIZED
3 FAN: 3 FAN:
1-MF1 2-MF1
and and
DP < PROGRAMMED 1-MF2 2-MF2
FAN CONTROL ON and and
DP > PROGRAMMED TB7-8 TB10- 1-KF1 2-KF1
PRESSURE MINUS 1-MF3 2-MF3
FAN CONTROL ON and 8 and and and
PROGRAMMED DIF- 4 FAN: 4 FAN:
3 PRESSURE AND FAN TB7-9 TB10-9 1-KF2 2-KF2
FERENTIAL PRES- 1-MF1 2-MF1
STAGES 1 AND 2 ARE and and and and
SURE AND FAN and and
ENERGIZED TB7-10 TB10-10 1-KF3 2-KF3
STAGES 1 AND 2 1-MF2 2-MF2
ARE ENERGIZED and and
1-MF3 2-MF3
and and
1-MF4 2-MF4

* When a fan stage is turned on, the pressure for the next stage is increased 20 PSIG and ramped back to the programmed on pressure over
the next 20 seconds.
** W
 hen a fan stage is turned off (Programmed ON pressure minus the differential), the OFF pressure for the next stage is decreased 20 psig
and ramped back to the programmed OFF pressure minus the differential.

The time delay (fan delay timer) between

turning fan stages on and off is fixed at
5 seconds.

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Table 27 - YLAA STANDARD CONDENSER FAN CONTROL USING DISCHARGE PRESSURE ONLY (5 OR 6
FANS PER SYSTEM)
FAN IPUII I/O OUTPUT FAN CONTACTOR FAN #
ON* OFF**
STAGE SYS 1 SYS 2 SYS 1 SYS 2 SYS 1 SYS 2
DP < PRO-
GRAMMED
DP > PRO- FAN CONTROL
GRAMMED FAN ON PRESSURE
1 TB7-8 TB10-8 1-KF1 2-KF1 1-MF1 2-MF1
CONTROL ON MINUS PRO-
PRESSURE GRAMMED
DIFFERENTIAL
PRESSURE
DP < PRO-
GRAMMED
FAN CONTROL
DP > PRO-
ON PRESSURE 1-MF1 2-MF1
GRAMMED FAN
MINUS PRO- TB7-8 TB10-8 1-KF1 2-KF1 and and
CONTROL ON
2 GRAMMED and and and and 1-MF2 2-MF2
PRESSURE AND
DIFFERENTIAL TB7-9 TB10-9 1-KF2 2-KF2 and and
FAN STAGE 1 IS
PRESSURE 1-MF3 2-MF3
ENERGIZED
AND FAN
STAGE 1 IS
ENERGIZED
5 FAN: 5 FAN:
1-MF1 1-MF1
and and
1-MF2 1-MF2
and and
DP < PRO- 1-MF3 1-MF3
GRAMMED and and
FAN CONTROL 1-MF4 1-MF4
DP > PRO-
ON PRESSURE and and
GRAMMED FAN TB7-8 TB10-8 1-KF1 2-KF1
MINUS PRO- 1-MF5 1-MF5
CONTROL ON and and and and
GRAMMED 6 FAN: 6 FAN:
3 PRESSURE AND TB7-9 TB10-9 1-KF2 2-KF2
DIFFERENTIAL 1-MF1 1-MF1
FAN STAGES 1 and and and and
PRESSURE and and
AND 2 ARE EN-
AND FAN
TB7-10 TB10-10 1-KF3 2-KF3
1-MF2 1-MF2 8
ERGIZED
STAGES 1 AND and and
2 ARE ENER- 1-MF3 1-MF3
GIZED and and
1-MF4 1-MF4
and and
1-MF5 1-MF5
and and
1-MF6 1-MF6

* When a fan stage is turned on, the pressure for the next stage is increased 20 psig and ramped back to the programmed on pressure over
the next 20 seconds.
** When a fan stage is turned off (Programmed ON pressure minus the differential), the OFF pressure for the next stage is decreased 20 psig
and ramped back to the programmed OFF pressure minus the differential.

The time delay (fan delay timer) between

turning fan stages on and off is fixed at
5 seconds.

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LOAD LIMITING Table 28 - COMPRESSOR OPERATION LOAD

LIMITING
Load Limiting is a feature that prevents the unit from
COMPRESSORS
loading beyond the desired value. 2 and 4 compres- STAGE 1 STAGE 2
IN UNIT
sor units can be load limited to 50%. This would allow
2 50% -
only 1 compressor per system to run. 3 and 6 compres-
sor units can be load limited to 33% or 66%. The 66% 3 66% 33%
limit would allow up to 2 compressors per system to 4 50% -
run, and the 33% limit would allow only 1 compressor 5 80% 40%
per system to run. Five-compressor units may be load 6 66% 33%
limited to 40% (1 compressor per system runs) or 80%
Simultaneous operation of Remote Load
(up to 2 compressors per system) are permitted to run.
Limiting and EMS-PWM Temperature
No other values of limiting are available.
Reset (described on following pages)
There are two ways to load limit the unit. The first is cannot occur.
through remote communication via an ISN. Load limit
stages are sent through YORK Talk on pages 9 and 10
of feature 54. Page 9 is stage 1 load limit and page 10 COMPRESSOR RUN STATUS
is stage 2 load limit.
Compressor run status is indicated by closure of con-
A second stage of load limiting the unit is accom- tacts at XTBC2 – Terminals 25 to 26 for system 1 and
plished by closing contacts connected to the Load Limit XTBC2 – Terminals 27 to 28 for system 2.
(XTBC1 – terminals 13-21) and PWM inputs (XTBC1
– terminals 13-20). Stage 1 of load limiting involves ALARM STATUS
closing the Load Limit input. Stage 2 of load limiting
System or unit shutdown is indicated by normally-open
involves closing both the Load Limit and PWM inputs.
alarm contacts opening whenever the unit shuts down
The first stage of limiting is either 80%, 66% or 50%,
on a unit fault, locks out on a system fault, or experi-
depending on the number of compressors on the unit.
ences a loss of power to the chiller electronics . System
The second stage of limiting is either 40% or 33% and
1 alarm contacts are located at XTBC2 – Terminals 29
is only available on 3, 5 and 6 compressor units. Table
to 30. System 2 alarm contacts are located at XTBC2 –
28 on page 180 shows the load limiting permitted for
Terminals 31 to 32. The alarm contacts will close when
the various numbers of compressors.
conditions allow the unit to operate, or the fault is reset
during a loss of power, the contacts will remain open
until power is reapplied and no fault conditions exist.

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REMOTE BAS/EMS TEMPERATURE RESET If a 4 mA to 20 mA signal is supplied, it is applied to

USING A VOLTAGE OR CURRENT SIGNAL Terminals A+ and A‑ and jumper JP1 on the I/O board
must be installed between pin 1 and 2. To calculate the
The Remote Reset Option allows the Control Center
chilled liquid set point for values between 4 mA and
of the unit to reset the chilled liquid set point using a
20 mA use the following formula:
0 VDC to 10 VDC input, or a 4 mA to 20 mA input
connected to XTBC1 Terminals A- and A+. Whenever Set Point = Local Chilled Liquid Set Point + °Reset
a reset is called for, the change may be noted by press- °Reset = (mA signal ‑ 4) x (*Max Reset Value)
ing the COOLING SET POINTS key twice. The new
16
value will be displayed as “REM SETP = XXX °F.”
Example:
If a 0 VDC to 10 VDC signal is supplied, it is applied Local Chilled Liquid Set Point = 45°F (7.22°C)
to Terminals A+ and A‑, and jumper JP1 on the I/O
board must be inserted between pins 2 and 3. To calcu- *Max Reset Value = 10°F (5.56°C)
late the reset chilled liquid set point for values between Input Signal = 12 mA
0VDC and 10 VDC use the following formula: (English)
Set Point = Local Chilled Liquid Set Point + °Reset °Reset = 8 mA x 10°F
= 5°F Reset
°Reset = (DC voltage signal) x (*Max Reset Value) 16
10 Set Point = 45°F + 5°F = 50°F
Example: (Metric)
Local Chilled Liquid Set Point = 45°F (7.22°C) °Reset = 8 mA x 5.56°C
= 2.78°C Reset
*Max Reset Value = 20°F (11.11°C) 16
Input Signal = 6 VDC Set Point = 7.22°C + 2.78°C = 10.0°C
(English)
A 240 to 24 V Ratio Transformer (T3) is
°Reset = 6 VDC x 20°F used to derive nominal 12 V output from
= 12°F Reset
10 the 120 V supply.
New Set Point = 45°F + 12°F = 57°F
(Metric)
°Reset = 6 VDC x 11. 11°C
= 6.67°C Reset
10
New Set Point = 7.22°C + 6.67°C = 13.89°C
* M
 ax Reset Value is the “Max EMS‑PWM Remote Temp. Reset”
8
set point value described in Remote Set Point Control on page
141 under “Cooling Set Points”. Programmable values are from
2°F to 40°F (1.11°C to 11.11°C).

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182 JOHNSON CONTROLS

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SECTION 9 – SERVICE AND TROUBLESHOOTING

CLEARING HISTORY BUFFERS SERVICE MODE – OUTPUTS

The history buffers may be cleared by pressing the After pressing the key sequence as described, the con-
HISTORY key and then repeatedly pressing the UP trol will enter Service Mode permitting the outputs
arrow key until you scroll past the last history buffer (except compressors), operating hours, refrigerant
choice. The following message will be displayed: type, expansion valve type, and start/hour counters to
be viewed/modified. The ENTER/ADV key is used to
I I N I T I A L I Z E H I S T O R Y advance through the outputs. Using the ↑ and ↓ (UP/
E N T E R = Y E S DOWN ) arrow keys will turn the respective digital out-
put ON/OFF or modify the value.
Pressing the ENTER/ADV key at this display will Following is the order of outputs that will appear as the
cause the history buffers to be cleared. Pressing any ENTER/ADV key is pressed:
other key will cancel the operation.
DO NOT CLEAR BUFFERS. Important SYS 1 COMP 1 STATUS TB7-2 IS:
information may be lost. Contact factory SYS 1 LLSV STATUS TB7-3 IS:
service. SYS 1 COMP 2 STATUS TB7-4 IS:
SYS 1 COMP 3 STATUS TB7-5 IS:
SYS 1 HGBP STATUS TB7-7 IS:
SYS 2 COMP 1 STATUS TB10-2 IS:
SYS 2 LLSV STATUS TB10-3 IS:
RESETTING SYSTEM LOCKOUT FAULTS SYS 2 COMP 2 STATUS TB10-4 IS:
If 3 faults on the same system occur within 90 minutes, SYS 2 COMP 3 STATUS TB10-5 IS:
that system will be locked out on the last fault. This SYS 1 FAN OUTPUT 1 TB7-8 IS:
condition requires a manual reset. The system switch SYS 1 FAN OUTPUT 2 TB7-9 IS:
(under OPTIONS key) must be turned off and then SYS 1 FAN OUTPUT 3 TB7-10 IS:
back on to clear the lockout fault. Fault messages will SYS 2 FAN OUTPUT 1 TB10-8 IS:
be displayed whenever a system is locked out. SYS 2 FAN OUTPUT 2 TB10-9 IS:
SYS 2 FAN OUTPUT 3 TB10-10 IS:
SERVICE MODE EVAP HEATER STATUS TB8-2 IS:
SYS 1 ALARM STATUS TB8-3 IS:
Service Mode is a mode that allows the user to enable SYS 2 ALARM STATUS TB9-2 IS:
or disable all of the outputs (except compressors) on EVAP PUMP STATUS TB8-6,7 IS:
the unit, change chiller configuration setup parameters SYS 2 HGBV STATUS TB10-7 IS:
and view all the inputs to the microboard. SPARE DO TB8-4 IS:
To enter Service Mode, turn the Unit Switch OFF and SPARE DO TB8-5 IS:
press the following keys in the sequence shown: SPARE DO TB8-8, 9 IS:

• PROGRAM
SPARE DO TB9-4 IS: 9
SYS 1 EEV OUTPUT TB5-1, 2 = XXX%
• UP ARROW SYS 2 EEV OUTPUT TB6-1, 2 = XXX%
• UP ARROW SYS 1 COND FAN SPEED J15-1,5 = XXX%
SYS 2 COND FAN SPEED J15-2,6 = XXX%
• DOWN ARROW SPARE AO J15-3,7 = XXX%
• DOWN ARROW SPARE AO J15-4,8 = XXX%
• ENTER DATA LOGGING MODE 1 = ON, 0 = OFF
DATA LOGGING TIMER X SECS
Service Mode will time out after 30 minutes and return
SOFT START (disabled)
to normal control mode, if the panel is accidentally left
REFRIGERANT TYPE (R-410A only)
in this mode. Otherwise, turning the unit switch ON
EXPANSION VALVE TYPE (Thermostatic Only)
will take the panel out of Service Mode.

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REMOTE TEMP RESET OPTION = PUMP CONTROL SELECTION

REMOTE INPUT SERVICE TIME = SYS 1 HOURS
“NORTH AMERICAN FEATURE SET ENABLED” SYS 2 HOURS
HYDRO PUMP SELECTION SYS 1 STARTS
EVAP PUMP TOTAL RUN HOURS
SYS 2 STARTS
SYS 1 HOURS
The last displays shown on the above list are for the ac-
SYS 2 HOURS
cumulated run and start timers for each system. All val-
SYS 1 STARTS
ues can also be changed using the ↑ (UP) and ↓ (Down)
SYS 2 STARTS
arrow keys, but under normal circumstances would not
Each display will also show the output connection on
be required or advised. After the last start display, the
the microboard for the respective output status shown.
microprocessor will display the first programmable
For example:
value under the PROGRAM key.
S Y S 1 L L S V S T A T U S
T B
10
- 3 I S O F F SERVICE MODE – ANALOG AND DIGITAL
INPUTS
This display indicates that the system 1 liquid line sole- After entering Service Mode (PROGRAM ↑↑ ↓↓),
noid valve is OFF, and the output connection from the all digital and analog inputs to the microboard can be
microboard is coming from terminal block 10 – pin 3. viewed by pressing the OPER DATA key. After press-
ing the OPER DATA key, the ↑ (UP) arrow and ↓
Pressing the ↑ (UP) arrow key will energize the liquid (DOWN) arrow keys are used to scroll through the
line solenoid valve and OFF will change to ON in the analog and digital inputs.
display as the LLSV is energized. Energizing and de-
energizing outputs may be useful during troubleshoot- Following is the order of analog and digital inputs that
ing. will appear when sequenced with the ↓ (Down) arrow
key:
SERVICE MODE – CHILLER CONFIGURATION
(analog inputs)
After the Outputs are displayed, the next group of
SYS 1 SUCT PRESSURE
displays relate to chiller configuration and start/hour
counters. Data logging, soft start, refrigerant type, UNIT TYPE
pump control selection and expansion valve type all SYS 1 *DISCH PRESSURE
must be programmed to match actual chiller configura- SYS 1** SUCTION TEMP.
tion. SYS 2** SUCTION TEMP.
Soft start (disabled), Refrigerant Type AMBIENT AIR TEMP.
(R-410A), and Expansion Valve Type LEAVING LIQUID TEMP.
(Thermostatic), and North American RETURN LIQUID TEMP.
Feature (Enabled) MUST be properly SYS 2 SUCTION PRESSURE
programmed or damage to compressors SYS 2 SPARE
and other system components may result
SYS 2 *DISCH PRESSURE
Following is a list of chiller configuration selections, in SYS 1 MTR VOLTS
order of appearance: SYS 2 MTR VOLTS
(digital inputs)
DATA LOGGING MODE = : DO NOT MODIFY
PWM TEMP RESET INPUT
DATA LOGGING TIMER = : DO NOT MODIFY
LOAD LIMIT INPUT
SOFT START FLOW SW / REM START
REFRIGERANT TYPE SPARE
EXPANSION VALVE TYPE SINGLE SYSTEM SELECT
SYS 1 MP / HPCO INPUT
REMOTE TEMP RESET OPTION
SYS 2 MP / HPCO INPUT
REMOTE INPUT SERVICE TIME * The discharge pressure transducer is optional on some models.
FEATURE SET ** The suction temp. sensor is on EEV units only.

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The analog inputs will display the input connection, Table 30 - I/O DIGITAL OUTPUTS
the temperature or pressure, and corresponding input TB7-2 SYS 1 Compressor 1
voltage such as: TB7-3 SYS 1 Liquid Line Solenoid Valve

S Y S 1 S U C T P R J 7 - 1 0 TB7-4 SYS 1 Compressor 2

2 . 1 V D C = 8 1 P S I G TB7-5 SYS 1 Compressor 3
TB7-7 SYS 1 Hot Gas Bypass Valve

This example indicates that the system 1 suction pres- TB10-2 SYS 2 Compressor 1
sure input is connected to plug 7 – pin 10 (J7-10) on the TB10-3 SYS 2 Liquid Line Solenoid Valve
I/O board. It indicates that the voltage is 2.1 VDC which TB10-4 SYS 2 Compressor 2
corresponds to 81 psig (5.6 bar) suction pressure. TB10-5 SYS 2 Compressor 3
TB7-8 SYS 1 Condenser Fan Output 1
The digital inputs will display the input connection and
TB7-9 SYS 1 Condenser Fan Output 2
ON/OFF status such as:
TB7-10 SYS 1 Condenser Fan Output 3
F L O
W S W / R E M S T A R T TB10-8 SYS 2 Condenser Fan Output 1
J 13
- 5 I S O N TB10-9 SYS 2 Condenser Fan Output 2
TB10-10 SYS 2 Condenser Fan Output 3
This indicates that the flow switch/remote start input is TB8-2 Evaporator Heater
connected to plug 13- pin 5 (J13-5) on the microboard, TB8-3 SYS 1 Alarm
and is ON (ON = +30 VDC unregulated input, OFF = TB9-2 SYS 2 Alarm
0VDC input on digital inputs).
TB8-6 & 7 Evaporator Pump Starter
CONTROL INPUTS/OUTPUTS TB10-7 SYS 2 Hot Gas Bypass Valve

Table 29 through Table 32 on page 185 are a quick Table 31 - I/O ANALOG INPUTS
reference list providing the connection points and a
SYS 1 Suction Transducer
description of the inputs and outputs respectively. All J7-10 -or-
input and output connections pertain to the connections SYS 1 Low Pressure Switch
at the microboard. Unit Type: Chiller = NO Jumper J11-12 to +24
VDC
Table 29 - I/O DIGITAL INPUTS J11-12
YCUL Condensing Unit = Jumper J11-12 to +24
J13-2 Unit ON/OFF Switch VDC (Do NOT Use)
J13-3 Load Limit Stage 2 on 3, 5 & 6 Comp. Units J7-11 SYS 1 Discharge Pressure Transducer (Optional)
J13-4 Load Limit Stage 1 J6-9 Ambient Air Temp. Sensor
J13-5 Flow Switch and Remote Start/Stop J6-7 Leaving Chilled Liquid Temp. Sensor
J13-6 Spare J6-8 Return Chilled Liquid Temp. Sensor
Single System Select SYS 2 Suction Pressure Transducer
J13-7
(Jumper = Single Sys, No Jumper = Two Sys) J9-10 -or-

J13-8
CR1 SYS 2 Low Pressure Switch
9
(Sys 1 Motor Protector/High Pressure Cutout) SYS 2 Discharge Pressure Transducer
J9-11
CR2 (Optional)
J13-10
(Sys 2 Motor Protector/High Pressure Cutout) J7-12 Unit/SYS 1 Voltage
J9-12 SYS 2 Voltage
J11-11 Remote Temperature Reset

Table 32 - I/O ANALOG OUTPUTS

N/A Not Applicable

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TB6 TB5 I/O BOARD

J15

TB1

TB7

J3

TB8

J5

IPU
BOARD
TB9
J6

J7

J8
TB10

J9

J10

J14 JP1
J13 J11
J12
LD12721

Figure 48 - MICROBOARD LAYOUT

186 JOHNSON CONTROLS

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CHECKING INPUTS AND OUTPUTS Table 33 - OUTDOOR AIR SENSOR

TEMPERATURE/VOLTAGE/
Digital Inputs CORRELATION
See the unit wiring diagram. All digital inputs are con- VOLTAGE
nected to J13-1 of the I/O board. The term “digital” TEMP °F (SIGNAL INPUT TEMP °C
refers to two states – either ON or OFF. As an example, TO RETURN)
when the flow switch is closed, 30 VDC will be ap- 0 0.7 -18
plied to J13, pin 5 (J13-5) of the I/O board. If the flow 5 0.8 -15
switch is open, 0 VDC will then be present at J13-5. 10 0.9 -12
15 1.0 -9
Pin 1 of J13 is an unregulated 30 VDC source used
20 1.1 -7
to supply the DC voltage to the various user contacts,
unit switch, flow switch, etc. This DC source is factory 25 1.2 -4
wired to XTBC1, Terminal 13. Any switch or contact 30 1.4 -1
used as a digital input would be connected to this ter- 35 1.5 2
minal, with the other end connecting to its respective 40 1.7 4
digital input on the microboard. Any time a switch or 45 1.8 7
contact is closed, 30 VDC would be applied to that par- 50 2.0 10
ticular digital input. Any time a switch or contact is 55 2.2 13
open, 0 VDC would be applied to that particular digital
60 2.3 16
input.
65 2.5 18
Typically, voltages of 24 VDC to 36 VDC could be 70 2.6 21
measured for the DC voltage on the digital inputs. This 75 2.8 24
voltage is in reference to ground. The unit case should 80 2.9 27
be sufficient as a reference point when measuring digi- 85 3.1 29
tal input voltages.
90 3.2 32

Analog Inputs – Temperature 95 3.4 35

100 3.5 38
See the unit wiring diagram. Temperature inputs are
105 3.6 41
connected to the microboard on plug J6. These analog
110 3.7 43
inputs represent varying DC signals corresponding to
varying temperatures. All voltages are in reference to 115 3.8 46
the unit case (ground). Following are the connections 120 3.9 49
for the temperature sensing inputs. 125 4.0 52
130 4.1 54
Outside Air Sensor
J6-6 = +5 VDC regulated supply to sensor.
J6-9 = 
VDC input signal to the microboard. 9
See Table 33 on page 187 for voltage readings
that correspond to specific outdoor tempera-
tures.
J6-3 = drain (shield connection = 0 VDC) return

JOHNSON CONTROLS 187

 FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

Table 34 - ENTERING/LEAVING CHILLED LIQUID Liquid and Refrigerant Sensor Test Points
TEMP. SENSOR, TEMPERATURE/
(See Table 34 on page 188)
VOLTAGE CORRELATION
VOLTAGE Entering Chilled Liquid Sensor
TEMP °F (SIGNAL INPUT TEMP °C
TO RETURN)
J6-5 = +5 VDC regulated supply to sensor.
10 1.33 -12 J6-8 = VDC input signal to the I/O board. See Table
12 1.39 -11 34 on page 188for voltage readings that cor-
14 1.46 -10 respond to specific liquid temperatures.
16 1.51 -9
J6-2 = drain (shield connection = 0 VDC) Return
18 1.58 -8
20 1.65 -7 Leaving Chilled Liquid Temperature Sensor
22 1.71 -6 J6-4 = +5 VDC regulated supply to sensor.
24 1.78 -4
26 1.85 -3 J6-7 = VDC input signal to the microboard. See Table
28 1.91 -2
34 on page 188for voltage readings that cor-
respond to specific liquid temperatures.
30 1.98 -1
32 2.05 0 J6-1 = drain (shield connection = 0 VDC) return
34 2.12 1
36 2.19 2 Analog Inputs – Pressure
38 2.26 3 See the unit wiring diagram. Pressure inputs are con-
40 2.33 4 nected to the microboard on plugs J7 and J9. These an-
42 2.40 6 alog inputs represent varying DC signals correspond-
44 2.47 7
ing to varying pressures. All voltages are in reference
to the unit case (ground).
46 2.53 8
48 2.60 9 System 1 discharge and suction pressures will be con-
50 2.65 10 nected to J7 of the microboard. System 2 discharge and
52 2.73 11 suction pressure transducers will be connected to J9 of
54 2.80 12 the microboard.
56 2.86 13 The discharge transducers are optional on all units. If
58 2.92 14 the discharge transducers are not installed, no connec-
60 2.98 16 tions are made to the microboard and the discharge
62 3.05 17 pressure readout on the display would be zero.
64 3.11 18
The suction pressure transducers are standard on all
66 3.17 19
YLAA. The suction pressure transducers have a range
68 3.23 20 of 0 psig to 400 psig. The output will be linear from
70 3.29 21 0.5 VDC to 4.5 VDC over the 400 psig (27.5 barg)
72 3.34 22 range.
74 3.39 23
The discharge transducers have a range from 0 psig to
76 3.45 24
650 psig. The output will be linear from 0.5 VDC to
78 3.5 26
4.5 VDC over the 600 psig (41.25 barg) range. Follow-
80 3.54 27 ing is the formula that can be used to verify the volt-
age output of the transducer. All voltage reading are in
reference to ground (unit case).

188 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 9 – SERVICE AND TROUBLESHOOTING
ISSUE DATE: 10/24/2019

Table 35 - PRESSURE TRANSDUCERS J9-7 = +5 VDC return

0-400 PSIG SUCTION 0-600 PSIG DISCHARGE
PRESSURE PRESSURE
J9-2 = drain (shield connection = 0 VDC)
TRANSDUCER TRANSDUCER The suction transducers have a range from 0 to 400
PRESSURE VOLTAGE PRESSURE VOLTAGE psig (27.5 barg). The output will be linear from
PSIG VDC PSIG VDC 0.5 VDC to 4.5 VDC over the 400 psig (27.5 barg)
0 0.5 0 0.5 range. Following is a formula that can be used to verify
50 1.0 75 1.0 the voltage output of the transducer. All voltage read-
100 1.5 150 1.5 ing are in reference to ground (unit case).
150 2.0 225 2.0
V = (Pressure in psig x 0.02) + 0.5
200 2.5 300 2.5
or
250 3.0 375 3.0
V = (Pressure in barg x 0.29) + 0.5
300 3.5 450 3.5
350 4.0 525 4.0 where V = DC voltage input to microprocessor
400 4.5 600 4.5 Pressure = pressure sensed by transducer
RED WIRE = 5V, BLACK WIRE = 0V, WHITE/GREEN WIRE = SIGNAL Following are the I/O board connections for the Suc-
tion Transducer.
TEST POINTS:
Suction Pressure:
System 1 Suction Transducer
System 1: ...............................................Microboard J7-10 to J7-9
System 2: ...............................................Microboard J9-10 to J9-9
J7-5 = +5 VDC regulated supply to transducer.
Discharge Pressure: J7-10 = V
 DC input signal to the microboard. See the
System 1: ...............................................Microboard J7-11 to J7-7 formula above for voltage readings that cor-
System 2: ...............................................Microboard J9-11 to J9-7 respond to specific suction pressures.
V = (Pressure in psig x .01) + 0.5 J7-9 = +5 VDC return.
or
J7-1 = drain (shield connection = 0 VDC).
V = (Pressure in barg x .145) + 0.5
where V = DC voltage output System 2 Suction Transducer
Pressure = pressure sensed by transducer J9-5 = +5 VDC regulated supply to transducer.
The I/O board connections for the Discharge J9-10 = V
 DC input signal to the microboard. See the
Transducers are as follows. formula above for voltage readings that
correspond to specific suction pressures.
System 1 Discharge Transducer
J7-6 = +5 VDC regulated supply to transducer. J7-9 = +5 VDC return.

J7-11 = V
 DC input signal to the microboard. See the J7-11 = drain (shield connection = 0VDC).
formula above for voltage readings that cor- 9
respond to specific discharge pressures. Digital Outputs
See the unit wiring diagram and Figure 49 on page
J7-7 = +5 VDC return 190. The digital outputs are located on TB7, TB8,
J7-2 = drain (shield connection = 0VDC) and TB9 and TB-10 of the microboard. All outputs are
120VAC with the exception of TB8-6 to TB8-7 which
System 2 Discharge Transducer are the contacts that can be used for a remote evapora-
tor pump start signal. The voltage applied to either of
J9-6 = +5 VDC regulated supply to transducer.
these terminals would be determined by field wiring.
J9-11 = VDC input signal to the microboard. See the
formula above for voltage readings that correspond to
specific discharge pressures.

JOHNSON CONTROLS 189

 FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

Each output is controlled by the microprocessor by Data Logging to Flash

switching 120 VAC to the respective output connection
energizing contactors, evaporator heater, and solenoids Enabling Data Logging to Flash
according to the operating sequence. The user can enable data logging to an SD card in the
unit setup mode. When data logging is ENABLED or
120 VAC is supplied to the I/O board via connections SKIP UNCHANGED, data is continuously stored at
at TB7-1, TB7-6, TB10-1, TB10-6, TB8-1 and TB9-1. the programmed data log time on an SD card. The SD
Figure 34 illustrates the relay contact architecture on the card is in the socket of the 031-02550 I/O board.
microboard.
SYS 1
Content
TB7-2 COMP 1
The root directory contains directories for each month.
TB7-3 LLSV 1 named RMyyyymm, where yyyy is the four digit year
TB7
TB7-4
SYS 1 and mm is the two digit month. Under each monthly
COMP 2
SYS 1
directory, there are the individual daily CSV format-
TB7-5 COMP 3 ted files named yyyymmdd.csv, where yyyy is the four
SYS 1
digit year, mm is the two digit month, and dd is the two
TB7-7 HGSV digit day.
SYS 1
TB7-8
TB7
FAN 2 The first row of the file is the header text. The second
SYS 1
TB7-9 FAN 1 row is the header unit. The remaining rows contain the
SYS 1
TB7-10 FAN 3
data captured at the specified interval of 5 seconds.
If the user disables and then enables the data logging
SYS 2
TB10-2 COMPR 1 (4) the same day, the new data is appended to the existing
TB10-3 LLSV 2
file.
TB10
SYS 2
TB10-4 COMPR 2 (5) When the SD card is full, the oldest day of data is de-
SYS 2 leted.
TB10-5 COMPR 3 (6)

SYS 2
TB10-7 HGSV

TB10-8
TB10
TB10-9 SYS 2
FAN 2
SYS 2
TB10-10 FAN 4

TB8-6 EVAP
TB8-7 PUMP
TB8
HEAT EXCH
TB8-2 HEATER

LD12722

Figure 49 - I/O BOARD RELAY CONTACT

ARCHITECTURE

190 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 9 – SERVICE AND TROUBLESHOOTING
ISSUE DATE: 10/24/2019

Table 36 - DATA LOGGING TO FLASH

DATA HEADER DATA
NUMBER TEXT UNIT FORMAT VALUE DESCRIPTION
1 Date x/x/xxxx Date
2 Time x:x:x Time (24 Hour Format)
3 Elapsed Time s x Elapsed time (seconds since data logging started)
4 LCHLT °F x.x Leaving Chilled Liquid Temperature
5 RCHLT °F x.x Return Chilled Liquid Temperature
6 LHLT °F x.x Leaving Hot Liquid Temperature (YCWL)
7 RHLT °F x.x Return Hot Liquid Temperature (YCWL)
8 Ambient Air °F x.x Ambient Air Temperature (N/A YCWL)
9 Active Cool Setp °F x.x Active Cooling Set Point
10 Active Heat Setp °F x.x Active Heating Set Point
11 Evap Heater x Evaporator Heater Status
12 Evap Pump x Evaporator Pump Contact Status
13 Evap Pump 2 x Evaporator Pump 2 Contact Status (Hydro Kit 2)
14 Biv Ht Step x Bivalent Heat Step (YLAE)
15 Drip Tray Htr x Drip Tray Heater (YLPA)
16 Mode Select x Mode Select (YCWL) (0=Chiller, 1=Heatpump)
17 Lead System x Lead System (0=System1, 1=System2)
18 Flow Switch x Flow Switch Status
19 S1 Run Time s x Sys 1 Run Time
20 S1 Operating Code x Sys 1 Operational Code
21 S1 Fault Code x Sys 1 Fault Code
22 S1 Suct Press psig x.x Sys 1 Suction Pressure
23 S1 Act_Spc psig x.x Sys 1 Actual Suction Pressure Cutout
24 S1 Dsch Press psig x.x Sys 1 Discharge Pressure
25 S1 Suct Temp °F x.x Sys 1 Suction Temperature
26 S1 Sat Suct Temp °F x.x Sys 1 Saturated Suction Temperature
27 S1 Suct Sheat °F x.x Sys 1 Suction Superheat
28 S1 C1 Run x Sys 1 Compressor 1 Run Status
29 S1 C2 Run x Sys 1 Compressor 2 Run Status
30 S1 C3 Run x Sys 1 Compressor 3 Run Status
31 S1 LLSV x Sys 1 Liquid Line Solenoid Valve Status
32 S1 Hot Gas x Sys 1 Hot Gas Bypass Solenoid Valve Status
33 S1 Fan Stage x Sys 1 Condenser Fan Stage 9
34 S1 Fan Speed % x Sys 1 VSD Fan Speed (VSD Fans)
35 S1 Comp Seq x Sys 1 Programmed Compressor Sequence (1=C1, 2=C2, 3=C3)
36 S1 CIR Temp °F x.x Sys 1 Cooler Inlet Refrig. Temp (R-407c)
37 S1 Dsch Sheat °F x.x Sys 1 Discharge Superheat (discharge temperature sensors
enabled)
38 S1 Sheat Setp °F x.x Sys 1 Superheat Set Point
Sys 1 Discharge Temperature (discharge temperature sensors
39 S1 Dsch Temp °F x.x
enabled)
x Sys 1 EEV Command (0 – 100%) 031-02755-001, -003
40 S1 EEV Cmd %
x.x Sys 1 EEV Command (0.0 – 100.0%) 031-02755-004
41 S1 EEV PWM % x Sys 1 EEV PWM (0 – 100%) 031-02755-001, -003

JOHNSON CONTROLS 191

 FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

TABLE 36 - DATA LOGGING TO FLASH (CONT’D)

DATA HEADER DATA
NUMBER TEXT UNIT FORMAT VALUE DESCRIPTION
Sys 1 EEV Controller State 031-02755-001, -003
Sys 1 CSHALG_CURRENT_CYCLE_INDEX,
42 S1 EEV Ctlr State x
0 = Setup, 1 = Off, 2 = Pulldown, 3 = Controlling, 4 = Pumpdown,
5 = MOP Control 031-02755-004
43 S1 Dfst Temp °F x.x Sys 1 Defrost Coil Temperature (Heatpump)
44 S1 Mode Valve x Sys 1 Mode Valve (Heatpump)
45 S2 Run Time s x Sys 2 Run Time
46 S2 Operating Code x Sys 2 Operational Code
47 S2 Fault Code x Sys 2 Fault Code
48 S2 Suct Press psig x.x Sys 2 Suction Pressure
49 S2 Act_Spc psig x.x Sys 2 Actual Suction Pressure Cutout
50 S2 Dsch Press psig x.x Sys 2 Discharge Pressure
51 S2 Suct Temp °F x.x Sys 2 Suction Temperature
52 S2 Sat Suct Temp °F x.x Sys 2 Saturated Suction Temperature
53 S2 Suct Sheat °F x.x Sys 2 Suction Superheat
54 S2 C1 Run x Sys 2 Compressor 1 Run Status
55 S2 C2 Run x Sys 2 Compressor 2 Run Status
56 S2 C3 Run x Sys 2 Compressor 3 Run Status
57 S2 LLSV x Sys 2 Liquid Line Solenoid Valve Status
58 S2 Hot Gas x Sys 2 Hot Gas Bypass Solenoid Valve Status
59 S2 Fan Stage x Sys 2 Condenser Fan Stage
60 S2 Fan Speed % x Sys 2 VSD Fan Speed (VSD Fans)
61 S2 Comp Seq x Sys 2 Programmed Compressor Sequence (1=C1, 2=C2, 3=C3)
62 S2 CIR Temp °F x.x Sys 2 Cooler Inlet Refrig. Temp (R-407c)
63 Sys 2 Discharge Superheat (discharge temperature sensors
S2 Dsch Sheat °F x.x
enabled)
64 S2 Sheat Setp °F x.x Sys 2 Superheat Set Point
x.x Sys 2 Discharge Temperature (discharge temperature sensors
65 S2 Dsch Temp °F
enabled)
x Sys 2 EEV Command (0 – 100%) 031-02755-001, -003
66 S2 EEV Cmd %
x.x Sys 2 EEV Command (0.0 – 100.0%) 031-02755-004
67 S2 EEV PWM % x Sys 2 EEV PWM (0 – 100%) 031-02755-001, -003
68 Sys 2 EEV Controller State 031-02755-001, -003
Sys 2 CSHALG_CURRENT_CYCLE_INDEX,
S2 EEV Ctlr State x
0 = Setup, 1 = Off, 2 = Pulldown, 3 = Controlling, 4 = Pumpdown,
5 = MOP Control 031-02755-004
69 S2 Dfst Temp °F x.x Sys 2 Defrost Coil Temperature (Heatpump)
70 S2 Mode Valve x Sys 2 Mode Valve (Heatpump)
Sys 1 CSHALG_FULL_PID_ACTIVE_INDEX (0 = Disable, 1 = Ac-
71 S1 Full PID Index x
tive)
Sys 1 CSHALG_DIMINISHED_PID_ACTIVE_INDEX
72 S1 Dim PID Index x
(0 = Disable, 1 = Active)
Sys 1 CSHALG_ALGORITHM_CONTROL_ACTIVE
73 S1 Alg Ctrl Act x
(0 = Disable, 1 = Enable)
Sys 1 CSHALG_SUPERHEAT_EXCURSIONS_INDEX
74 S1 Sheat Ex In x
(0 – 255 in x1 format)

192 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 9 – SERVICE AND TROUBLESHOOTING
ISSUE DATE: 10/24/2019

TABLE 36 - DATA LOGGING TO FLASH (CONT’D)

DATA HEADER DATA
NUMBER TEXT UNIT FORMAT VALUE DESCRIPTION
Sys 1 CSHALG_PROPORTIONAL_CONTRIBUTION_INDEX
75 S1 Prop Cont In x
(0-10000 in x100 format)
Sys 1 CSHALG_INTEGRAL_CONTRIBUTION_INDEX
76 S1 Int Cont In x
(0-1000000 in x10000 format)
Sys 1 CSHALG_DERIVATIVE_CONTRIBUTION_INDEX
77 S1 Der Cont In x
(0-10000 in x100 format)
Sys 2 CSHALG_FULL_PID_ACTIVE_INDEX
78 S2 Full PID Index x
(0 = Disable, 1 = Active)
Sys 2 CSHALG_DIMINISHED_PID_ACTIVE_INDEX
79 S2 Dim PID Index x
(0 = Disable, 1 = Active)
Sys 2 CSHALG_ALGORITHM_CONTROL_ACTIVE
80 S2 Alg Ctrl Act x
(0 = Disable, 1 = Enable)
Sys 2 CSHALG_SUPERHEAT_EXCURSIONS_INDEX
81 S2 Sheat Ex In x
(0 – 255 in x1 format)
Sys 2 CSHALG_PROPORTIONAL_CONTRIBUTION_INDEX
82 S2 Prop Cont In x
(0-10000 in x100 format)
Sys 2 CSHALG_INTEGRAL_CONTRIBUTION_INDEX
83 S2 Int Cont In x
(0-1000000 in x10000 format)
Sys 2 CSHALG_DERIVATIVE_CONTRIBUTION_INDEX
84 S2 Der Cont In x
(0-10000 in x100 format)
85 S1 Thr Limit % x Sys 1 CSHALG_EEV_THROTTLE_LIMIT (0-10000 in x100 format)
86 S2 Thr Limit % x Sys 2 CSHALG_EEV_THROTTLE_LIMIT (0-10000 in x100 format)

OPTIONAL PRINTER INSTALLATION Parts

The micro panel is capable of supplying a printout The following parts are required:
of chiller conditions or fault shutdown information at
any given time. This allows operator and service per- 1. Printer.
sonnel to obtain data and system status with the touch 2. Desk top calculator paper, 2.25 in. (5.7 cm) wide.
of the keypad. In addition to manual print selection,
the micro panel will provide an automatic printout 3. Twisted Pair Shielded Cable (minimum 3 conduc-
whenever a fault occurs. Detailed explanation of the tor), #18 AWG stranded, 300 V minimum insula-
print function is given under Print Key on page 134. tion, 25 ft (7.62 m) maximum length.
4. One 25 pin Cannon connector and shell.
5. Cannon P/N DB-25P connector, or equivalent. 9
6. Cannon P/N DB-C2-J9 shell.

JOHNSON CONTROLS 193

 FORM 150.72-ICOM6
SECTION 9 – SERVICE AND TROUBLESHOOTING
ISSUE DATE: 10/24/2019

Assembly and Wiring Obtaining a Printout

All components should be assembled and wired as A printout is obtained by pressing the PRINT key on
shown in Figure 50. Strip the outside insulation back the keypad and then pressing either the OPER DATA
several inches and individual wires about 3/8 in. (9.5 key or HISTORY key.
mm) to connect the cable at the Microboard. Do not
connect the shield at the printer-end of the cable.

Chiller Microboard Printer

TB3

TB3-3 TXD 2 RD

TB3-2 CTS 5 CTS

TB3-5 GND 7 SG

Shield (connect shield to Pin 5 Do not connect shield

of the connector. at printer end.

LD12723

Figure 50 - PRINTER TO MICROBOARD ELECTRICAL CONNECTIONS

194 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 9 – SERVICE AND TROUBLESHOOTING
ISSUE DATE: 10/24/2019

TROUBLESHOOTING
Table 37 - TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
1. No 115 VAC to 24 VAC 1a. Check wiring and fuse 1FU.
Transformer.
1b. C
 heck wiring emergency stop contacts 5 to
L of XTBC2 Terminal Block.
1c. Replace Control Transformer.
2. No 24 VAC to Microboard. 2. Check wiring Control Transformer to
Microboard.
3. Control Transformer defective, 3. Replace Control Transformer.
no 24 VAC output.
NO DISPLAY ON PANEL. UNIT 4. Short in wire to temp. sensors or 4. Unplug connections at IPU II & I/O Board to
WILL NOT OPERATE pressure transducers. isolate.
5. Defective IPU II & I/O Board or 5. Replace IPU II & I/O Board or the Display
the Display Board. Board.
Contact Johnson Controls
Service before replacing cir-
cuit Boards!

1. No chilled liquid flow. 1. Check chilled liquid flow.

2. Flow switch improperly installed. 2. Check that the flow switch is installed
according to manufacturer’s instructions.
FLOW SWITCH/REM STOP NO
RUN PERMISSIVE 3. Defective flow switch. 3. Replace flow switch.
4. Remote cycling device open. 4. Check cycling devices connected to
terminals 13 and 14 of the XTBC1 Terminal
Block.
1. Improper suction pressure 1. Adjust per recommended settings.
cutouts adjustments.
2. Low refrigerant charge. 2. Repair leak if necessary and add refrigerant.
3. Fouled filter dryer. 3. Change dryer/core.
4. TXV defective. 4. Replace TXV.
5. Reduced flow of chilled liquid 5. Check GPM (See Operational Limitations on
LOW SUCTION PRESSURE through the cooler. page 47). Check operation of pump, clean
FAULT pump strainer, purge chilled liquid system of
air.
9
6. Defective suction pressure 6. Replace transducer/low pressure switch or
transducer/low pressure switch faulty switch or wiring. See SECTION 9 –
or wiring. SERVICE AND TROUBLESHOOTING for
pressure/voltage formula.
7. LLSV defective 7. Replace LLSV
1. Condenser fans not operating or 1. Check fan motor, and contactors. Assure fan
operating backwards. blows air upward.
2. Too much refrigerant. 2. Remove refrigerant.
HIGH DISCHARGE PRESSURE 3. Air in refrigerant system. 3. Evacuate and recharge system.
FAULT
4. Defective discharge pressure 4. Replace discharge pressure transducer.
transducer. See SECTION 9 – SERVICE AND
TROUBLESHOOTING for pressure/voltage
formula on page 189.

JOHNSON CONTROLS 195

 FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

TABLE 37 - TROUBLESHOOTING (CONT’D)

PROBLEM CAUSE SOLUTION

1. Improperly adjusted leaving 1. Re-program the leaving chilled liquid temp.
chilled liquid temp. cutout (glycol cutout.
only).
2. Micro panel set point/range 2. Re-adjust set point/range.
values improperly programmed.

LOW LIQUID TEMP FAULT 3. Increase chilled liquid flow. See Operational
3. Chilled liquid flow too low.
Limitations on page 47).
4. Defective LWT or RWT sensor 4. Compare sensor against a known good
(assure the sensor is properly Temperature sensing device. See Table 34
installed in the bottom of the well on page 188.
with a generous amount of heat)
conductive compound).
1. Compressor internal motor 1. Verify refrigerant charge is not low. Verify
protector (MP) open. superheat setting of 10°F to 15°F (5.6°C to
8.3°C). Verify correct compressor rotation.
Verify compressor is not overloaded.
MP / HPCO FAULT 2. External overload tripped. 2. Determine cause and reset.
3. HPCO switch open. 3. See High Press. Disch. Fault.
4. Defective HPCO switch. 4. Replace HPCO switch.
5. Defective CR relay. 5. Replace relay.
1. Demand not great enough. 1. No problem. Consult Installation Manual to
aid in understanding compressor operation
and capacity control.
2. Defective water temperature 2. Compare the display with a thermometer.
COMPRESSOR(S) WON’T START sensor. Should be within plus or minus 2 degrees.
See Table 34 on page 188for RWT/LWT
temp./voltage table.
3. Contactor/Overload failure. 3. Replace defective part.
4. Compressor failure. 4. Diagnose cause of failure and replace.
1. Fouled evaporator surface. 1. Contact the local Johnson Controls service
Low suction pressure will be representative.
observed.
2. Improper flow through the 2. Reduce flow to within chiller design specs.
LACK OF COOLING EFFECT
evaporator. See Operational Limitations on page 47).
3. Low refrigerant charge. Low 3. Check subcooling and add charge as
suction pressure will be needed.
observed.

196 JOHNSON CONTROLS

FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

SECTION 10 – MAINTENANCE

It is the responsibility of the equipment owner to per- CONDENSER FAN MOTORS

form maintenance on the system.
Condenser fan motors are permanently lubricated and
Important require no maintenance.

If system failure occurs due to improper maintenance Condenser MCHX

during the warranty period, Johnson Controls will not
be liable for costs incurred to return the system to sat- Dirt should not be allowed to accumulate on the
isfactory operation. The following is intended only as MCHX condenser surfaces. Cleaning should be as
a guide and covers only the chiller unit components. It often as necessary to keep coils clean.
does not cover other related system components which Exercise care when cleaning the MCHX
may or may not be furnished by Johnson Controls. so that the fins are not damaged.
System components should be maintained according to
the individual manufacture’s recommendations as their
operation will affect the operation of the chiller.

COMPRESSORS
CONDENSER MCHX CLEANING
Oil Level check The cleaning procedure for the condenser MCHX is
The oil level can only be tested when the compressor is significantly different than tube and fin type MCHX.
running in stabilized conditions, to ensure that there is Care must be taken to understand the differences to
no liquid refrigerant in the lower shell of the compres- avoid damage to the MCHX. These differences require
sor. When the compressor is running at stabilized con- a number of DO NOT’s that must be observed:
ditions, the oil level must be between 1/4 and 3/4 in the
• DO NOT use coil cleaners or any chemical on
oil sight glass. At shutdown, it is acceptable if the oil
a MCHX. This can cause severe damage to the
level falls to the bottom limit of the oil sight glass.
coils.
Use YORK “V” oil 011-00949-000, when
adding oil to Copeland compressor. The • DO NOT use a pressure washer to clean the
Bitzer compressor uses 011-00982-000 oil. MCHX. While it is possible to clean a the MCHX
with a pressure washer, it’s also possible to de-
stroy it.
• DO NOT contact the MCHX with a hard surface
Oil Analysis such as a hose nozzle or metal vacuum nozzle or
any other tool.
The oil used in these compressors is pale yellow in
color (POE oil). If the oil color darkens or exhibits a Follow the three steps below for cleaning the MCHX:
change in color, this may be an indication of contami-
1. Remove surface debris such as dirt, leaves, insects,
nants in the refrigerant system. If this occurs, an oil
fibers, etc. with a vacuum cleaner having a soft at-
sample should be taken and analyzed. If contaminants
tachment rather than a metal tube. Compressed air
are present, the system must be cleaned to prevent
blown from the inside out can also be used. When
compressor failure.
brushing debris off the face of the MCHX a soft
Never use the scroll compressor to pump bristle (not wire) brush can be used. Do not scrape 10
the refrigerant system down into a vacu- the MCHX with the vacuum nozzle, air nozzle, or
um. Doing so will cause internal arcing any other tool.
of the compressor motor which will result
in failure of compressor.

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 FORM 150.72-ICOM6
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ISSUE DATE: 10/24/2019

2. Rinse the MCHX with tap water. Do not use THERMAL DISPERSION FLOW SWITCH
MCHX cleaners. Rinse the coil from the inside
Check the sensor tip for buildup regularly, because it
out, running water through every passage in the
can affect the sensitivity of the sensor.
heat exchanger surface until it is clean. Use a gen-
tle spray from a spray nozzle with a plastic end or In case of any buildup at the sensor tip, use a soft cloth
put your finger on the end of the spray nozzle to to remove it. Use vinegar as the cleaning agent to re-
reduce impact and provide a gentle spray. move any stubborn buildup if necessary.
3. Because of the fin geometry, the condenser
BRAZED PLATE HEAT EXCHANGER
MCHX retain water more than tube and fin style.
(EVAPORATOR) HEATER
It is generally recommended to blow or vacuum
out the rinse water from the MCHX to speed dry- The internal power supply to the Evapo-
ing and prevent water pooling. rator Heater is 120 VAC. Disconnecting
120 VAC power from the unit, at or below
OPERATING PARAMETERS freezing temperatures, can result in dam-
Regular checks of the system should be preformed age to the evaporator and unit as a result
to ensure that operating temperatures and pressures of the chilled liquid freezing.
are within limitations, and that the operating controls
OVERALL UNIT INSPECTION
are set within proper limits. See SECTION 8 – UNIT
OPERATION, SECTION 6 – COMMISSIONING, and In addition to the checks listed on this page, periodic
SECTION 4 – INSTALLATION of this manual. overall inspections of the unit should be accomplished
to ensure proper equipment operation. Items such as
ON-BOARD BATTERY BACK-UP loose hardware, component operation, refrigerant
The Real Time Clock chip (U5) located on the 031- leaks, unusual noises, etc. should be investigated and
02630 IPU II board that maintains the date/time and corrected immediately.
stores customer programmed set points.
Do not confuse JP1 on the IPU II (031-
02630) board with JP1 on the I/O (031-
02550) board.

198 JOHNSON CONTROLS

FORM 150.72-ICOM6
SECTION 10 – MAINTENANCE
ISSUE DATE: 10/24/2019

TEMPERATURE
TEMPERATURE CONVERSION
CONVERSION CHART
CHART
Temperature Conversion Chart - Temperature Conversion Chart -
Actual Temperatures Differential Temperatures
°F = °C °C = °F °F = °C °C = °F
0 -17.8 -18 -0.4 0 0 0 0
4 -15.6 -16 3.2 4 2.2 2 3.6
8 -13.3 -14 6.8 8 4.4 4 7.2
12 -11.1 -12 10.4 12 6.7 6 10.8
16 -8.9 -10 14 16 8.9 8 14.4
20 -6.7 -8 17.6 20 11.1 10 18
24 -4.4 -6 21.2 24 13.3 12 21.6
28 -2.2 -4 24.8 28 15.6 14 25.2
32 0.0 -2 28.4 32 17.8 16 28.8
36 2.2 0 32 36 20 18 32.4
40 4.4 2 35.6 40 22.2 20 36
44 6.7 4 39.2 44 24.4 22 39.6
48 8.9 6 42.8 48 26.7 24 43.2
52 11.1 8 46.4 52 28.9 26 46.8
56 13.3 10 50 56 31.1 28 50.4
60 15.6 12 53.6 60 33.3 30 54
64 17.8 14 57.2
68 20.0 16 60.8
72 22.2 18 64.4 Pressure Conversion Chart -
76 24.4 20 68 Gauge or Differential
80 26.7 22 71.6
84 28.9 24 75.2 PSI = BAR BAR = PSI
88 31.1 26 78.8 20 1.38 1.5 21.8
92 33.3 28 82.4 30 2.07 2 29
96 35.6 30 86 40 2.76 2.5 36.3
100 37.8 32 89.6 50 3.45 3 43.5
104 40.0 34 93.2 60 4.14 3.5 50.8
108 42.2 36 96.8 70 4.83 4 58
112 44.4 38 100.4 80 5.52 4.5 65.3
116 46.7 40 104 90 6.21 5 72.5
120 48.9 42 107.6 100 6.9 5.5 79.8
124 51.1 44 111.2 110 7.59 6 87
128 53.3 46 114.8 120 8.28 6.5 94.3
132 55.6 48 118.4 130 8.97 7 101.5
136 57.8 50 122 140 9.66 7.5 108.8
140 60.0 52 125.6 150 10.34 8 116
144 62.2 54 129.2 160 11.03 8.5 123.3
148 64.4 56 132.8 170 11.72 9 130.5
152 66.7 58 136.4 180 12.41 9.5 137.8
156 68.9 60 140 190 13.1 10 145
160 71.1 62 143.6 200 13.79 10.5 152.3
164 73.3 64 147.2 210 14.48 11 159.5
168 75.6 66 150.8 220 15.17 11.5 166.8
172 77.8 68 154.4 230 15.86 12 174
176 80.0 70 158 240 16.55 12.5 181.3
180 82.2 72 161.6 250 17.24 13 188.5
184 84.4 74 165.2 260 17.93 13.5 195.8
188 86.7 76 168.8 270 18.62 14 203
192 88.9 78 172.4 280 19.31 14.5 210.3
196
200
91.1
93.3
80
82
176
179.6
290
300
20
20.69
15
15.5
217.5
224.8
10
204 95.6 84 183.2 310 21.38 16 232
208 97.8 86 186.8 320 22.07 16.5 239.3
212 100.0 88 190.4 330 22.76 17 246.5
216 102.2 90 194 340 23.45 17.5 253.8
220 104.4 92 197.6 350 24.14 18 261
224 106.7 94 201.2 360 24.83 18.5 268.3
228 108.9 96 204.8 370 25.52 19 275.5
232 111.1 98 208.4 380 26.21 19.5 282.8
236 113.3 100 212 390 26.9 20 290
240 115.6 102 215.6 400 27.59 20.5 297.3
244 117.8 104 219.2

JOHNSON CONTROLS 199

 FORM 150.72-ICOM6
SECTION 10 – MAINTENANCE
ISSUE DATE: 10/24/2019

R-410A PRESSURE TEMPERATURE CHART

PSIG TEMP ˚F PSIG TEMP ˚F
0 -60 78 20
2 -58 80 21
4 -54 85 24
6 -50 90 26
8 -46 95 29
10 -42 100 32
12 -39 105 34
14 -36 110 36
16 -33 115 39
18 -30 120 41
20 -28 125 43
22 -26 130 45
24 -24 135 47
26 -20 140 49
28 -18 145 51
30 -16 150 53
32 -14 160 57
34 -12 170 60
36 -10 180 64
38 -8 190 67
40 -6 200 70
42 -4 210 73
44 -3 220 76
46 -2 225 78
48 0 235 80
50 1 245 83
52 3 255 85
54 4 265 88
56 6 275 90
58 7 285 92
60 8 295 95
62 10 305 97
64 11 325 101
66 13 355 108
68 14 375 112
70 15 405 118
72 16 500 134
74 17 600 149
76 19 700 159

200 JOHNSON CONTROLS

FORM 150.72-ICOM6
ISSUE DATE: 10/24/2019

The following factors can be used to convert from

English to the most common SI Metric values.

Table 38 - SI METRIC CONVERSION

MEASUREMENT MULTIPLY ENGLISH UNIT BY FACTOR TO OBTAIN METRIC UNIT

Capacity Tons Refrigerant Effect (ton) 3.516 Kilowatts (kW)

Power Horsepower 0.7457 Kilowatts (kW)

Flow Rate Gallons / Minute (gpm) 0.0631 Liters / Second (l/s)

Feet (ft) 0.3048 Meters (m)

Length
Inches (in.) 25.4 Millimeters (mm)

Weight Pounds (lb) 0.4536 Kilograms (kg)

Velocity Feet / Second (fps) 0.3048 Meters / Second (m/s)

Feet of Water (ft) 2.989 Kilopascals (kPa)

Pressure Drop
Pounds / Square Inch (psi) 6.895 Kilopascals (kPa)

TEMPERATURE
To convert degrees Fahrenheit (°F) to degrees Celsius
(°C), subtract 32° and multiply by 5/9 or 0.5556.
Example: (45.0°F - 32°) x 0.5556 = 7.22°C
To convert a temperature range (i.e., a range of 10°F)
from Fahrenheit to Celsius, multiply by 5/9 or 0.5556.
Example: 10.0°F range x 0.5556 = 5.6 °C range

JOHNSON CONTROLS 201

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 150.72-ICOM6 (1019)
Issue Date: October 24, 2019
Supersedes: 150.72-ICOM6 (619)