_CDHF-SVX01E.

book Page 1 Monday, April 29, 2013 2:13 PM

Installation, Operation,
and Maintenance

CDHF and CDHG Water-Cooled CenTraVac Chillers

With Tracer AdaptiView Control

Models: CDHF, CDHG X39641076050

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and
servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific
knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could
result in death or serious injury. When working on the equipment, observe all precautions in the literature
and on the tags, stickers, and labels that are attached to the equipment.

April 2013 CDHF-SVX01E-EN

_CDHF-SVX01E.book Page 2 Monday, April 29, 2013 2:13 PM

Warnings, Cautions, and Notices

Note that warnings, cautions, and notices appear at
appropriate intervals throughout this manual. Warnings WARNING
are provided to alert installing contractors to potential
hazards that could result in personal injury or death. Refrigerant May Be Under Positive
Cautions are designed to alert personnel to hazardous Pressure!
situations that could result in personal injury, while System contains oil and refrigerant and may be under
notices indicate a situation that may result in equipment or positive pressure. Recover refrigerant to relieve
property-damage-only accidents. pressure before opening the system. See unit
nameplate for refrigerant type. Do not use non-
Your personal safety and the proper operation of this
approved refrigerants, refrigerant substitutes, or
machine depend upon the strict observance of these refrigerant additives. Failure to recover refrigerant to
precautions. relieve pressure or the use of non-approved
refrigerants, refrigerant substitutes, or refrigerant
ATTENTION: Warnings, Cautions, and Notices appear at additives could result in an explosion which could
appropriate sections throughout this literature. Read result in death or serious injury or equipment damage.
these carefully:

Indicates a potentially hazardous WARNING

WARNING situation which, if not avoided, could Personal Protective Equipment (PPE)
result in death or serious injury.
Required!
Indicates a potentially hazardous
CAUTIONs situation which, if not avoided, could Installing/servicing this unit could result in exposure to
result in minor or moderate injury. It electrical, mechanical and chemical hazards.
could also be used to alert against • Before installing/servicing this unit, technicians
unsafe practices.
MUST put on all PPE required for the work being
Indicates a situation that could result in
NOTICE: equipment or property-damage only undertaken. ALWAYS refer to appropriate MSDS
sheets and OSHA guidelines for proper PPE.
Important • When working with or around hazardous chemicals,
ALWAYS refer to the appropriate MSDS sheets and
Environmental Concerns!
OSHA guidelines for information on allowable
Scientific research has shown that certain man-made personal exposure levels, proper respiratory
chemicals can affect the earth’s naturally occurring protection and handling instructions.
stratospheric ozone layer when released to the
• If there is a risk of arc or flash, technicians MUST put
atmosphere. In particular, several of the identified
on all PPE in accordance with NFPA 70E or other
chemicals that may affect the ozone layer are refrigerants
country-specific requirements for arc flash
that contain Chlorine, Fluorine and Carbon (CFCs) and
protection, PRIOR to servicing the unit.
those containing Hydrogen, Chlorine, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these Failure to follow instructions could result in death or
compounds have the same potential impact to the serious injury.
environment. Trane advocates the responsible handling of
all refrigerants-including industry replacements for CFCs
such as HCFCs and HFCs. WARNING
Responsible Refrigerant Practices! Proper Field Wiring and Grounding
Required!
Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
conditioning industry. All technicians who handle
wiring poses FIRE and ELECTROCUTION hazards. To
refrigerants must be certified. The Federal Clean Air Act avoid these hazards, you MUST follow requirements for
(Section 608) sets forth the requirements for handling, field wiring installation and grounding as described in
reclaiming, recovering and recycling of certain NEC and your local/state electrical codes. Failure to
refrigerants and the equipment that is used in these follow code could result in death or serious injury.
service procedures. In addition, some states or
municipalities may have additional requirements that
must also be adhered to for responsible management of
refrigerants. Know the applicable laws and follow them.

© 2013 Trane All rights reserved CDHF-SVX01E-EN

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Warnings, Cautions, and Notices

Trademarks
NOTICE: CenTraVac, Duplex, EarthWise, RuptureGuard, Tracer,
Do Not Use Non-Compatible Parts or Tracer AdaptiView, Trane, and the Trane logo are
Materials! trademarks or registered trademarks of Trane in the United
States and other countries. All trademarks referenced in
Only genuine Trane® replacement components with
identical Trane part numbers should be used in Trane this document are the trademarks of their respective
CenTraVac chillers. Use of non-compatible parts or owners.
materials could result in equipment damage. Trane BACnet is a registered trademark of American Society of
assumes no responsibility for damages resulting from Heating, Refrigerating and Air-Conditioning Engineers
the use of non-compatible parts or materials. (ASHRAE); Belzona is a registered trademark of Belzona
International Ltd.; Echelon and LonTalk are registered
Factory Warranty Information trademarks of Echelon Corporation; Gene and Sam are
Compliance with the following is required to preserve the trademarks—and RECTORSEAL is a registered
factory warranty: trademark—of Rectorseal; Heresite is a registered
trademark of Heresite-Saekaphen, Inc.; ifm efector is a
All Unit Installations registered trademark of ifm efector, inc.; Loctite is a
Startup MUST be performed by Trane, or an authorized registered trademark of Henkel Corporation; LPS is a
agent of Trane, to VALIDATE this WARRANTY. Contractor registered trademark of LPS Laboratories; MegaPlex is a
must provide a two-week startup notification to Trane (or registered trademark of ConocoPhillips Company;
an agent of Trane specifically authorized to perform MODBUS is a registered trademark of Schneider
startup). Automation Inc.; Teflon is a registered trademark of E. I. du
Pont de Nemours and Company or its affiliates; Victaulic is
Additional Requirements for Units Requiring a registered trademark of Victaulic Company.
Disassembly
When a new fully assembled chiller is shipped and
received from our Trane manufacturing location and, for
any reason, it requires disassembly or partial
disassembly—which could include but is not limited to the
evaporator, condenser, control panel, compressor/motor,
purge, factory-mounted starter or any other components
originally attached to the fully assembled unit—
compliance with the following is required to preserve the
factory warranty:
• Trane, or an agent of Trane specifically authorized to
perform start-up and warranty of Trane® products, will
perform or have direct on-site technical supervision of
the disassembly and reassembly work.
• The installing contractor must notify Trane—or an
agent of Trane specifically authorized to perform
startup and warranty of Trane® products—two weeks
in advance of the scheduled disassembly work to
coordinate the disassembly and reassembly work.
• Start-up must be performed by Trane or an agent of
Trane specifically authorized to perform startup and
warranty of Trane® products.
Trane, or an agent of Trane specifically authorized to
perform start-up and warranty of Trane® products, will
provide qualified personnel and standard hand tools to
perform the disassembly work at a location specified by
the contractor. The contractor shall provide the rigging
equipment such as chain falls, gantries, cranes, forklifts,
etc. necessary for the disassembly and reassembly work
and the required qualified personnel to operate the
necessary rigging equipment.

CDHF-SVX01E-EN 3
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Table of Contents
Warnings, Cautions, and Notices . . . . . . . . . . 2 Flanges with 16, 20, or 24 Bolts . . . . . . . .26
Unit Model Number Description . . . . . . . . . . 6 Flanges with More than 24 Bolts . . . . . . .26
Model Number Digit Description . . . . . . . . . . 7 Evaporator Waterbox Covers . . . . . . . . . .26

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Pressure Testing Waterside Piping . . . . . . .26

ASHRAE Standard 15 Compliance . . . . . . . 8 Vent Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Unit Shipment . . . . . . . . . . . . . . . . . . . . . . . . 8 Refrigerant Vent Line . . . . . . . . . . . . . . . . . .27
Installation Requirements and Contractor Re- General Requirements . . . . . . . . . . . . . . . .27
sponsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Purge Discharge . . . . . . . . . . . . . . . . . . . . .27
Storage Requirements . . . . . . . . . . . . . . . . 10 Vent Line Materials . . . . . . . . . . . . . . . . . .27
Unit Components . . . . . . . . . . . . . . . . . . . . . 11 Vent Line Sizing . . . . . . . . . . . . . . . . . . . . .27
Unit Clearances and Weights . . . . . . . . . . . . 12 Vent Line Installation . . . . . . . . . . . . . . . . . . .28
Recommended Unit Clearances . . . . . . . . 12 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
General Weights . . . . . . . . . . . . . . . . . . . . . . 13 Unit Insulation Requirements . . . . . . . . . . .32
Installation: Mechanical . . . . . . . . . . . . . . . . . 14 Insulation Thickness Requirements . . . . . .32
Operating Environment . . . . . . . . . . . . . . . 14 Installation: Controls . . . . . . . . . . . . . . . . . . . . .34
Foundation Requirements . . . . . . . . . . . . . 14 UC800 Specifications . . . . . . . . . . . . . . . . . .34
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Wiring and Port Descriptions . . . . . . . . . .34
Standard Chiller Lift . . . . . . . . . . . . . . . . . 14 Communication Interfaces . . . . . . . . . . . .34
Special Lift Requirements . . . . . . . . . . . . 16 Rotary Switches . . . . . . . . . . . . . . . . . . . . .34
Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . 16 LED Description and Operation . . . . . . . .34
Isolation Pads . . . . . . . . . . . . . . . . . . . . . . . . 16 Installing the Tracer AdaptiView Display . .40
Spring Isolators . . . . . . . . . . . . . . . . . . . . . . 17 Adjusting the Tracer AdaptiView Display Arm
Leveling the Unit . . . . . . . . . . . . . . . . . . . . . 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Installation: Water Piping . . . . . . . . . . . . . . . . 19 Electrical Requirements . . . . . . . . . . . . . . . . . .42
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Installation Requirements . . . . . . . . . . . . . .42
Water Treatment . . . . . . . . . . . . . . . . . . . . . 19 Electrical Requirements . . . . . . . . . . . . . . . .42
Pressure Gauges . . . . . . . . . . . . . . . . . . . . . 19 Trane-Supplied Starter Wiring . . . . . . . . . .43
Valves—Drains and Vents . . . . . . . . . . . . . 19 Customer-Supplied Remote Starter Wiring 44
Strainers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Current Transformer and Potential Transform-
er Wire Sizing . . . . . . . . . . . . . . . . . . . . . . . . .45
Required Flow-Sensing Devices . . . . . . . . 20
Evaporator and Condenser Water Piping 21 Power Supply Wiring . . . . . . . . . . . . . . . . . . . .46
Three-Phase Power . . . . . . . . . . . . . . . . . .46
Water Piping Connections . . . . . . . . . . . . . 22
Waterbox Locations . . . . . . . . . . . . . . . . . . . 23 Circuit Breakers and Fused Disconnects . .46

Grooved Pipe Coupling . . . . . . . . . . . . . . . . 23 Power Factor Correction Capacitors (Optional)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Flange-Connection Adapters . . . . . . . . . . . 24
Interconnecting Wiring . . . . . . . . . . . . . . . . .47
Victaulic Gasket Installation . . . . . . . . . . . . 25
Starter to Motor Wiring (Remote-Mounted
Bolt-Tightening Sequence for Water Piping Starters Only) . . . . . . . . . . . . . . . . . . . . . . . . .48
Connections . . . . . . . . . . . . . . . . . . . . . . . . . 25
Ground Wire Terminal Lugs . . . . . . . . . . .48
Flanges with 4, 8, or 12 Bolts . . . . . . . . . 25
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Table of Contents

Terminal Clamps . . . . . . . . . . . . . . . . . . . 48 vices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Wire Terminal Lugs . . . . . . . . . . . . . . . . . 48 Unit Control Panel . . . . . . . . . . . . . . . . . . .66
Bus Bars . . . . . . . . . . . . . . . . . . . . . . . . . . 48 User-Defined Language Support . . . . . . .66
Starter to Control Panel Wiring . . . . . . . . . 49 Unit Start-up and Shut-down Procedures .66
10kV–13.8kV Medium Voltage Installation . 50 Daily Unit Start-up . . . . . . . . . . . . . . . . . . .67
10kV–13.8kV Medium Voltage Motor . . . 50 Seasonal Unit Start-up . . . . . . . . . . . . . . .67
Motor Terminal Box . . . . . . . . . . . . . . . . . 50 Daily Unit Shut-down . . . . . . . . . . . . . . . .68
Motor Supply Wiring . . . . . . . . . . . . . . . . . . 50 Recommended Maintenance . . . . . . . . . . . . .69
System Control Circuit Wiring (Field Wiring) . Record Keeping Forms . . . . . . . . . . . . . . .69
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Normal Operation . . . . . . . . . . . . . . . . . . .69
Water Pump Interlock Circuits and Flow Recommended Compressor Oil Change . .71
Switch Input . . . . . . . . . . . . . . . . . . . . . . . 53
Purge System . . . . . . . . . . . . . . . . . . . . . . . . .71
Temperature Sensor Circuits . . . . . . . . . . . 54
Leak Checking Based on Purge Pump Out
Optional Control and Output Circuits . . . 54 Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Optional Tracer Communication Interface 54 Long Term Unit Storage . . . . . . . . . . . . . . . .72
Unit Start-up/Commissioning . . . . . . . . . . 54 Refrigerant Charge . . . . . . . . . . . . . . . . . . . .72
Starter Module Configuration . . . . . . . . . . 54 Recommended System Maintenance . . .73
Schematic Wiring Drawings . . . . . . . . . . . . 55
Waterbox Removal and Installation . . . . . . .75
Operating Principles . . . . . . . . . . . . . . . . . . . . 56 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
General Requirements . . . . . . . . . . . . . . . . 56 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Cooling Cycle . . . . . . . . . . . . . . . . . . . . . . . . 56 Reassembly . . . . . . . . . . . . . . . . . . . . . . . .76
Duplex Compressor Sequencing . . . . . . . . 57 Torque Requirements . . . . . . . . . . . . . . . .76
Fixed Sequence—Compressor 1/Compressor Connection Devices Information . . . . . . . . .77
2 (Default Mode) . . . . . . . . . . . . . . . . . . . . 57
Forms and Check Sheets . . . . . . . . . . . . . . . . .78
Fixed Sequence—Compressor 2/Compressor
1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Sequencing—Balanced Starts and Hours 58
Simultaneous Compressor Start/Stop . . 58
Compressor Load Balancing . . . . . . . . . . 58
Oil and Refrigerant Pump . . . . . . . . . . . . . . 59
Motor Cooling System . . . . . . . . . . . . . . . . 61
Tracer AdaptiView Display . . . . . . . . . . . . . 61
Start-up and Shut-down . . . . . . . . . . . . . . . . . 62
Sequence of Operation . . . . . . . . . . . . . . . . 62
Software Operation Overview Diagram . 62
Start-up Sequence of Operation—Wye-Delta
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Power Up Diagram . . . . . . . . . . . . . . . . . . 64
Ice Machine Control . . . . . . . . . . . . . . . . . . . 64
Hot Water Control . . . . . . . . . . . . . . . . . . . . 65
Control Panel Devices and Unit-Mounted De-

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Unit Model Number Description

The unit nameplate is located on the left side of the left
hand control panel. A typical unit nameplate is illustrated Figure 1. Typical unit nameplate
in Figure 1 and contains the following information:
• Unit model and size descriptor
• Unit electrical requirements
• Correct operating charge and refrigerant type
• Unit test pressures and maximum operating pressures
• Unit literature
Serial Number. The unit serial number provides the
specific chiller identity. Always provide this serial number
when calling for service or during parts identification.
Service Model Number. The service model represents
the unit as built for service purposes. It identifies the
selections of variable unit features required when
ordering replacements parts or requesting service.
Note: Unit-mounted starters are identified by a separate
number found on the starter.
Product Description Block. The CenTraVac™ models
are defined and built using the Product Definition and
Selection (PDS) system. This system describes the product
offerings using a product coding block which is made up of
feature categories and codes that identifies all
characteristics of a unit.

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Model Number Digit Description

Digit Description
1–3 Unit Type
4 Development Sequence
5–8 Nominal Tonnage
9 Unit Voltage
10–11 Design Sequence
12 Compressor Motor Power Left-Hand Circuit
13 Compressor Motor Power Right-Hand Circuit
14–16 Compressor Impeller Diameter Left-Hand Circuit
17–19 Compressor Impeller Diameter Right-Hand Circuit
20 Evaporator Tube Bundle (nominal tons)
21 Evaporator Tubes
22 Control Power Transformer
23 Evaporator Waterbox
24 Evaporator Waterbox Connection
25 Unit Type
26 Condenser Tube Bundle Size
27 Condenser Tubes
28 Rupture Guard
29 Condenser Waterboxes
30 Condenser Waterbox Connection
31 Control Enclosure
32 Orifice Size Left-Hand Circuit
33 Orifice Size Right-Hand Circuit
34 Starter Type Left-Hand
35 Starter Type Right-Hand
36 Enhanced Protection
37 Generic BAS
38 Water Flow Control
39 Tracer Communication Interface
40 Condenser Refrigerant Control
41 Extended Operation
42 Chilled Water Reset - Outdoor Air Temperature Sensor
43 Operating Status
44 Gas Powered Chiller
45 Compressor Motor Frame Size Left-Hand Circuit
46 Compressor Motor Frame Size Right-Hand Circuit
47 Unit Insulation
48 Spring Isolators
49 Manufacturing Location
50 Evaporator & Condenser Size
51 Special Option

CDHF-SVX01E-EN 7
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Pre-Installation
ASHRAE Standard 15 Compliance
Trane recommends that indoor CenTraVac unit
installations fully meet or exceed the guidelines of the
current version of ASHRAE Standard 15, in addition to any
applicable local, state, or national requirements. This
typically includes:
• A refrigerant monitor or detector that is capable of
monitoring and alarming within the acceptable
exposure level of the refrigerant, and that can actuate
mechanical ventilation.
• Audible and visual alarms, activated by the refrigerant
monitor, inside the equipment room and outside of
every entrance.
• The equipment room should be properly vented to the
outdoors, using mechanical ventilation that can be Note: The holding charge should register approximately
activated by the refrigerant monitor. 5 psig (34.5 kPa) at 72°F (22.2°C). Place a gauge on
• The purge discharge and the rupture disk must be access valve provided (indicated by arrow and
properly piped to the outdoors. circle in the figure at left) on the refrigerant pump
• If required by local or other codes, a self-contained discharge line to verify the holding charge. If the
breathing apparatus should be available in close charge has escaped, contact your local Trane sales
proximity to the equipment room. office for instructions. For Duplex™, verify charge
on both units.
Refer to the latest copy of ASHRAE Standard 15 for specific
guidelines. Trane assumes no responsibility for any 3. The loose parts box and isolator pads ship on top of the
economic, health, or environmental issues that may result control panel box.
from an equipment room’s design or function. 4. Check the oil sump sight glasses to verify that the sump
was factory-charged with 9 gallons (34 L) of oil. If no oil
Unit Shipment level is visible, contact your local Trane sales office.

Inspect unit while it is still on the truck for any shipping Installation Requirements and
damage. The chiller ships shrink-wrapped in a 10-mil
recyclable film protective covering. Do not remove shrink- Contractor Responsibilities
wrap for inspection! Inspect for damage to the shrink-
wrap and determine if physical damage has occurred. A list of the contractor responsibilities typically associated
with the unit installation process is provided.
Each chiller ships from the factory as a hermetically
assembled package; it is factory-assembled, -wired, and
-tested. All openings except for the waterbox vent and
CAUTION
drain holes are covered or plugged to prevent Combustible Material!
contamination during shipment and handling. Figure 2, Shrink-wrap is a combustible material. Avoid open
p. 11 shows an illustration of a typical unit and its flames and hot sparks. Failure to follow this instruction
components. As soon as the unit arrives at the job site, could result in minor to moderate injury and equipment
inspect it thoroughly for damage and material shortages. damage.
In addition:
Note: The chiller should remain within its protective
1. Verify the hermetic integrity of the unit by checking the
shrink-wrap covering during storage.
chiller pressure for an indication of holding charge
pressure.
Note: Since there are two refrigerant circuits both
must be checked.
2. To prevent damaging moisture from entering the unit
and causing corrosion, each chiller is pressurized with
3 to 5 psig of dry nitrogen before shipment.

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Pre-Installation

Type of Trane Supplied Trane Supplied Field Supplied

Requirement Trane Installed Field Installed Field Installed
Foundation • Meet foundation requirements
Rigging • Safety chains
• Clevis connectors
• Lifting beam
Disassembly/Reassembly • Trane, or an agent of Trane
(as required)(a) specifically authorized to
perform start-up of Trane®
products (contact your local
Trane office for pricing)
Isolation • Isolation pads or spring • Isolation pads or spring isolators
isolators
Electrical • Circuit breakers or fusible • Jumper bars • Circuit breakers or fusible disconnects (optional)
disconnects (optional) • Temperature sensor • Electrical connections to unit mounted starter
• Unit mounted starter (optional outdoor air) (optional)
(optional) • Flow switches (may be • Electrical connections to remote mounted starter
• PFCCs (optional) field supplied) (optional)
• Remote-mounted starter • Wiring sizes per submittal and NEC
(optional) • PFCCs (remote mounted starter optional only)
• Terminal lugs
• Ground connection(s)
• Jumper bars
• BAS wiring (optional)
• IPC wiring (AFD and remote-mounted starters only)
• Control voltage wiring (AFD and remote-mounted
starters only)
• Oil pump interlock wiring (AFD and remote mounted
starters only)
• High condenser pressure interlock wiring (AFD and
remote mounted starters only)
• Chilled water pump contactor and wiring including
interlock
• Condenser water pump contactor and wiring including
interlock
• Option relays and wiring
Water piping • Flow sensing devices • Taps for flow sensing devices
(may be field supplied) • Taps for thermometers and gauges
• Thermometers
• Strainers (as required)
• Water flow pressure gauges
• Isolation and balancing valves in water piping
• Vents and drain on waterbox valves (one each per pass)
• Pressure relief valves (for waterboxes as required)
Relief • Rupture disc assembly • RuptureGuard™ • Vent line and flexible connector and vent line from
(optional) rupture disc to atmosphere
Insulation • Insulation (optional) • Insulation
• Chiller feet insulation
Water Piping Connection Flanged (optional) Flanged (optional) Victaulic
Components • Welded on flange for • Victaulic® to flange • Victaulic coupling for 150 and 300 psig waterboxes
300 psig waterboxes adapter for 150 psig
waterboxes
Other Materials • HCFC-22 refrigerant (1 lb maximum per machine as
needed)
• Dry nitrogen (8 psig maximum per machine as needed)
“CenTraVac™ Installation • To be completed by installing contractor prior to
Completion Check Sheet contacting Trane for start-up
and Request for Trane
Service”
(CTV-ADF001-EN; refer to
“Forms and Check Sheets,”
p. 78)
Chiller start-up • Trane, or an agent of Trane
commissioning(b) specifically authorized to
perform start-up of Trane®
products

CDHF-SVX01E-EN 9
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Pre-Installation

(a) Trane, or an agent of Trane specifically authorized to perform start-up and warranty of Trane® products, will perform or have direct on-site supervision
of the disassembly and reassembly work.
(b) Start-up must be performed by Trane or an agent of Trane specifically authorized to perform start-up and warranty of Trane® products. Contractor shall
provide Trane (or an agent of Trane specifically authorized to perform start-up) with notice of the scheduled start-up at least two weeks prior to the
scheduled start-up.

Storage Requirements

NOTICE:
Insulation Damage!
Direct exposure to sunlight may damage factory-
installed insulation. Failure to follow these instructions
could result in insulation damage.

Less than 1 month 1–6 months Greater than 6 months

Location requirements: Location requirements: Location requirements:
• solid foundation • solid foundation • solid foundation
• vibration free • vibration free • vibration free
• dry • dry • dry
• temperature range -40°F to 158°F • temperature range -40°F to 158°F • temperature range -40°F to 158°F
(-40°C to 70°C) (-40°C to 70°C) (-40°C to 70°C)
• Do not remove any plastic coverings • Do not remove any plastic coverings • Do not remove any plastic coverings
• Do not charge the chiller with refrigerant • Do not charge the chiller with refrigerant • Do not charge the chiller with refrigerant
• If additional refrigerant is on site, follow • If additional refrigerant is on site, follow • If additional refrigerant is on site, follow
manufactures storage requirements manufactures storage requirements manufactures storage requirements
• Verify dry nitrogen pressure using gauge • Verify dry nitrogen pressure using gauge • Verify dry nitrogen pressure using gauge located
located on the evaporator shell reads located on the evaporator shell reads on the evaporator shell reads 3 to 5 psig
3 to 5 psig (21 to 34.5 kPa) 3 to 5 psig (21 to 34.5 kPa) (21 to 34.5 kPa)
• Notify the local Trane office if charge has • Notify the local Trane office if charge has • Notify the local Trane office if charge has escaped
escaped escaped
• Do not operate purge unit • Do not operate purge unit • Do not operate purge unit
• Verify waterbox and tube bundles are • Verify waterbox and tube bundles are clean and
clean and dry dry
• Conduct an oil analysis and verify no oil
breakdown(a)
• Repeat yearly
• Replace oil if breakdown has occurred
• If no oil analysis program has been followed,
replace oil prior to start up
• Every 6 months start the oil pump and rotate
compressor shaft about 450 degrees to prevent
potential bearing issues(a)
• Contact your local Trane office to perform this task
Note: Chillers stored 5 years or longer should be inspected every 5 years by a qualified service organization for leaks.
(a) If protective plastic coverings need to be removed for access and/or service, contact your local Trane office.

10 CDHF-SVX01E-EN
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Pre-Installation

Unit Components
Note: The control panel side of the unit is always
designated as the front side of the unit. The left side
of the unit is referred to as referred to as Side 1 and
the right side of the unit is referred to as Side 2.
Figure 2. Typical Duplex CenTraVac chiller

1 2

4 3
1

4 3
-
0

6
5

6 7

0 7

8
1. Suction Elbow 7. Economizer
2. Compressor 8. Oil Tank Assembly
3. Terminal Box 9. Purge
4. Control Panel 10. Evaporator
5. Condenser 11. Display Panel
6. Motor Housing

CDHF-SVX01E-EN 11
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Unit Clearances and Weights

Recommended Unit Clearances • Minimum vertical clearance above the unit is 3 feet
(91.44 cm).
Adequate clearances around and above the chiller are • Use a housekeeping pad to provide better service
required to allow sufficient access for service and clearances; refer to submittal for more information.
maintenance operations. Specific unit clearance Per NEC Article 110: Unit mounted starters from 0–600V
requirements are indicated in the submittal package require a 42 inch (106.68 cm) clearance, 601–2500V require
provided for your unit. a 48 inch (121.92 cm) clearance, and 2501–9000V require a
• Do NOT install piping or conduit above the compressor 60 inch (152.4 cm) clearance. Refer to NEC and local
motor assembly or behind the suction elbow of the electrical codes for starter and control panel clearance
unit. requirements.

Figure 3. Clearance requirements

Cooling condenser Economizer

Evaporator 18 in. (45.72 cm) D

Right hand tube pull shown, apply tube

pull clearance dimension to left end for
left hand tube pull. E

Motor

Optional unit
Per NEC Article 110 mounted starter
Per NEC Article 110

A B
C

3 ft.

Table 1. Clearance requirements(a)

A B C D E
Shell Combo inch cm inch cm inch cm inch cm inch cm
210DD 62.375 158.43 264 670.56 585 1485.9 37 93.98 106 269.24
250DD 62.375 158.43 264 670.56 585 1485.9 36 91.44 121 307.34
250MM 69 175.26 318 807.72 699 1775.46 33 83.82 121 307.34
250XX 69 175.26 366 929.64 795 2019.3 33 83.82 121 307.34
(a) All dimensions are approximate; refer to the unit submittal package for exact dimensions for your unit.

12 CDHF-SVX01E-EN
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Unit Clearances and Weights

General Weights • Operating weights include the heaviest possible

refrigerant weight.
The unit weight information provided in Table 2 should • Chillers with starters include the weight of the
be used for general information purposes only. Trane heaviest possible starter.
does not recommend using this weight information for • Heaviest possible bundle and heaviest possible
considerations relative to chiller handling. The large motor combination for the application family
number of variances between chiller selections drives chiller.
variances in chiller weights that are not recognized in
this table. For specific weights for your chiller, refer to The values in Table 2 representing chiller weights do NOT
your submittal package. include the following options:
The values in Table 2 representing chiller weights include • INDP (Industrial Control Panel) option—add 50 lb
the following: (23 kg)
• TECU 0.028-in. tube wall. • CPTR (Control Panel Transformer) option—add
130 lb (50 kg)
• 150 psig non-marine waterboxes.
• SMP (Supplemental Motor Protection) option—add
500 lb (230 kg)

Table 2. Unit weights

Weight without Starter Weight with Starters
Operating Shipping Operating Shipping
Model NTON CPKW EVSZ CDSZ lb kg lb kg lb kg lb kg
CDHF 1500–2000 957 210D 210D 76770 34822 66105 29985 82690 37508 72025 32670
(60 Hz) 2170–2550 1228 250D 250D 87349 39621 73814 33481 90627 41108 77092 34968
3000 1340 250M 250M 104574 47434 87557 39715 107852 48921 90835 41202
3500 1340 250X 250X 112716 51127 93492 42407 115994 52614 96770 43894
CDHG 1250–1750 621 210D 210D 82845 37578 71980 32650 86123 39065 75258 34136
(50 Hz)
2250 892 210D 210D 83957 38082 73092 33154 87235 39569 76370 34641
2250 892 250D 250D 91423 41469 77888 35329 94701 42956 81166 36816

CDHF-SVX01E-EN 13
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Installation: Mechanical
Operating Environment
WARNING
Important:
Heavy Objects!
• The standard chiller is design for indoor use only and
Do not use cables (chains or slings) except as shown in
as such has NEMA Type 1 enclosures.
Figure 4, p. 15. Each of the cables (chains or slings)
• For chillers in unheated equipment rooms, contact used to lift the unit must be capable of supporting the
your local Trane service agency for methods to ensure entire weight of the unit. Lifting cables (chains or
that the oil temperature is maintained suitable for slings) may not be of the same length. Adjust as
proper operation of the chiller. necessary for even unit lift. Failure to properly lift unit
could result in death or serious injury, or equipment or
To ensure that electrical components operate properly, do property-only damage.
not locate the chiller in an area exposed to dust, dirt,
corrosive fumes, or excessive heat and humidity. The
maximum ambient temperature for chiller operation is
WARNING
104°F (40°C).
Improper Unit Lift!
NOTICE: Test lift unit approximately 24 inches (61 cm) to verify
proper center of gravity lift point. To avoid dropping of
Equipment Failure! unit, reposition lifting point if unit is not level. Failure to
Unit operating at ambient temperatures exceeding properly lift unit could result in death or serious injury,
104°F (40°C) could fatigue the unit’s rupture disc, or equipment or property-only damage.
causing it to break at a reduced refrigerant pressure
(<15 psig). Starter component damage could also occur
due to the panel’s inability to dissipate heat adequately.
If any of these adverse operating conditions are
NOTICE:
present, take necessary action to improve the Wiring Damage!
equipment room environment. Care must be taken during rigging, assembly and
disassembly to avoid damaging unit wiring. Damage to
Foundation Requirements unit wiring could result in equipment failure.

Chiller mounting surface must be: Standard Chiller Lift

• rigid non-warping mounting pads or a concrete 1. Insert clevis connections at the points indicated in
foundation. Figure 4, p. 15. A 2.5 inch (63.5 mm) diameter lifting
• able to support the chiller at its full operating weight hole is provided at each of these points.
(including completed piping, and full operating 2. Attach the lifting chains or cables.
charges of refrigerant, oil and water.)
3. Once the lifting cables are in place, attach a safety chain
For proper unit operation, the chiller must be level within or cable between the first-stage casing of the
1/16 in. (1.6 mm) over its length and width when set into compressor and the lifting beam.
place on the mounting surface. Table 2, p. 13 shows
approximate weights for various chiller sizes and options. Important: There should not be tension on this safety
cable; the cable is used only to prevent the
Note: For specific weight information, refer to the unit unit from rolling during the lift.
submittal package.
4. Position isolator pads or spring isolators beneath the
Important: Trane will not assume responsibility for chiller feet (refer to “Unit Isolation,” p. 16 for
equipment problems resulting from an instructions).
improperly designed or constructed
foundation. Note: Follow instructions provided by the spring
isolator manufacturer, being careful to not
damage isolator adjustment bolt.
Rigging
5. Once the isolators are in place, lower the chiller—
Lifting is the recommended method for moving chillers. working from end to end—in small increments to
Suggested lifting arrangements for standard units are maintain stability.
described in “Standard Chiller Lift,” p. 14. 6. When lift is complete, detach the clevis connections
Note: The lifting beam used for Duplex units must be at and safety chain.
least 23 feet (7 meters) long.

14 CDHF-SVX01E-EN
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Installation: Mechanical

Figure 4. Typical rigging arrangements for Duplex

chillers
Y
Lifting
X
beam

Safety
chains

A
Safety
chains

B
C
Jacking
points

Table 3. Rigging arrangements

X Y H
Type NTON EVSZ CDSZ inch cm feet meter inch cm
CDHF 1500–2000 210D 210D 117 297.18 22 6.7056
CDHF 2100–2500 250D 250D 117 297.18 22 6.7056
CDHF 2170–2550 250D 250D 143 363.22 23 7.0104
CDHG 1250–1750 210D 210D 117 297.18 22 6.7056
CDHG 2150 210D 210D 117 297.18 22 6.7056
24.75 62.865
CDHG 2150 250D 250D 117 297.18 22 6.7056
CDHG 2250 210D 210D 143 363.22 23 7.0104
CDHG 2250 250D 250D 143 363.22 23 7.0104
CDHF 3000 250M 250M 142 360.68 26.5 8.0772
CDHF 3500 250X 250X 164 416.56 30.5 9.2964
Notes:
1. Lifting chains (or cables) are not the same length between point A and B, or between points A and C. Adjust as necessary
for an even lift.
2. Lifting holes provided on chillers to attach chains are 2 1/2 inch in diameter.
3. Attach safety chain (or cable) as shown, and without tension. The safety chain is not used for lifting, but is there to
prevent the unit from rolling.
4. Do not fork-lift the unit.

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Installation: Mechanical

Special Lift Requirements location, contact Trane. For more information, refer to
“Factory Warranty Information,” p. 3.

NOTICE: Unit Isolation

Oil Loss!
To minimize sound and vibration transmission through the
To prevent oil migration out of the oil tank during lifting
procedures, remove the oil from the oil tank if the unit building structure, and to ensure proper weight
will be lifted at any angle greater than 15° from distribution over the mounting surface, always install
horizontal end-to-end. If oil is allowed to run out of the isolation pads or spring isolators under the chiller feet.
oil tank into other areas of the chiller, it will be Note: Isolation pads (see Figure 5) are provided with each
extremely difficult to return the oil to the oil tank even chiller unless spring isolators are specified on the
during operation. Failure to prevent oil migration out of
sales order.
the oil tank could result in equipment failure or
property-only damage. Note: The center support leg of the Duplex CenTraVac is
approximately 1/2 in. (12.7 mm) shorter than the
end support legs, and a field supplied steel shim of
NOTICE: appropriate thickness will be required under the
Equipment Damage! center support leg to ensure the chiller’s weight is
evenly distributed. If isolation pads are used, the
Do not use a fork lift to move the chiller! Moving the shim used should be of the same dimensions as the
chiller using a fork lift could result in equipment or
chiller’s center foot, or larger, and it should be
property-only damage.
placed under the isolation pads. If isolation springs
are used then any shims used with them should be
placed under the springs and must be large enough
NOTICE: to properly support the spring base.
Compressor Alignment! Specific isolator loading data is provided in the unit
Lifting the compressor/motor assembly from the shells submittal package. If necessary, contact your local Trane
without factory-installed doweling in the compressor sales office for further information.
casting flanges could result in misalignment of the
compressor castings. Failure to preserve compressor Important: When determining placement of isolation
alignment could result in equipment or property-only pads or spring isolators, remember that the
damage. control panel side of the unit is always
designated as the unit front.
If the chiller cannot be moved using a standard chiller lift,
consider the following: Isolation Pads
• When job site conditions require rigging of the chiller
at an angle greater than 45° from horizontal (end-to- When the unit is ready for final placement, position
end), the unit may require removal of the compressor. isolation pads (6-in. sides) end for end under the full
Contact Trane or an agent of Trane specifically length of the chiller leg. The pads measure 6 in. × 18 in.
authorized to perform start-up and warranty of Trane® (152.4 mm x 457 mm) and on some units there may be
products regarding the disassembly and reassembly small gaps between pads. Pads are provided to cover
work. For more information, refer to “Factory Warranty entire foot.
Information,” p. 3. Duplex units have pads for both ends, plus pads for the
Note: Disassembly and reassembly work includes support in the middle of the chiller.
dowel-pinning the compressor and removing it
Figure 5. Isolation pad and dimensions
from the unit. Contact Trane or an agent of
Trane specifically authorized to perform start- 3/8 in.
up and warranty of Trane® products for specific (9.5 mm)
rigging instructions. Do NOT attempt to rotate 18 in.
the chiller onto its side. (457 mm)
• When lifting the chiller is either impractical or
undesirable, attach cables or chains to the jacking slots
shown in Figure 4, p. 15; then push or pull the unit
across a smooth surface. Should the chiller be on a 6 in.
shipping skid, it is not necessary to remove the (152.4 mm)

shipping skid from the chiller before moving it into

place.
• If removal of the compressor or economizer assembly
is necessary to move the chiller to the operating
16 CDHF-SVX01E-EN
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Installation: Mechanical

Remember that the chiller must be level within 1/16 in. alternative method of fastening the chiller
(1.6 mm) over its length and width after it is lowered onto to the isolators is to cement the neoprene
the isolation pads. In addition, all piping connected to the pads.
chiller must be properly isolated and supported so that it 5. Set the chiller on the isolators; refer to “Standard
does not place any stress on the unit. Chiller Lift,” p. 14. The weight of the chiller will force
down the upper housing of each isolator, and could
Spring Isolators cause it to rest on the isolator’s lower housing (refer to
Figure 7).
Spring isolators should be considered whenever chiller .

installation is planned for an upper story location. Base Figure 7. Chiller foot and isolator orientation
isolator placement is shown in Figure 6.
Side View of Unit End View of Unit
Figure 6. Isolation spring placement by shell size,
center tube
evaporator and condenser length
sheet outside edge
middle support leg of tube sheet
rear
left right center of
rear rear isolator
Condenser 210 D/D spring
250 D/D
250 M/M
250 X/X Note: The spring isolator must be centered Note: The length of the
Evaporator in relation to the tube sheet. Do not isolator should
align the isolator with the flat part of be parallel to the
left right the chiller foot since the tube sheet is leg.
often off center
front middle front
front

Spring isolators typically ship assembled and ready for

installation. To install and adjust the isolators properly,
follow the instructions given.
Note: Do not adjust the isolators until the chiller is piped
and charged with refrigerant and water.
1. Position the spring isolators under the chiller as shown
in Figure 6. Ensure that each isolator is centered in
relation to the tube sheet.
Note: Spring isolators shipped with the chiller may
not be identical. Compare the data provided in
the unit submittal package to determine proper
isolator placement. 6. Check the clearance on each isolator. If this dimension
is less than 1/4 in. (6.35 mm) on any isolator, use a
2. Set the isolators on the sub-base; shim as necessary to wrench to turn the adjusting bolt one complete
provide a flat, level surface at the same elevation for revolution upward.
the end supports, and approximately 1/2 in. (12.7 mm)
higher for the center support. Note: When the load is applied to the isolators (Step 5),
the top plate of each isolator moves down to
Important: Support the full underside of the isolator compress the springs until either the springs
base plate; do NOT straddle gaps or small support the load or the top plate rests on the
shims. bottom housing of the isolator. If the springs are
3. If required, bolt the isolators to the floor through the supporting the load, screwing down on the
slots provided, or cement the pads. adjusting bolt (Step 7) will raise the chiller.
Note: Fastening the isolators to the floor is not 7. Turn the adjusting bolt on each of the remaining
necessary unless specified. isolators to obtain the required minimum clearance of
4. If the chiller must be fastened to the isolators, insert 1/4 in. (6.35 mm).
capscrews through the chiller base and into holes 8. Once the minimum required clearance is obtained on
drilled and tapped in the upper housing of each each of the isolators, level the chiller by turning the
isolator. adjusting bolt on each of the isolators on the low side
Important: Do NOT allow the screws to protrude below of the unit. Work from one isolator to the next.
the underside of the isolator upper housing, Important: The chiller must be level to within 1/16 in.
or interfere with the adjusting bolts. An (0.15875 cm) over its length and width, and

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Installation: Mechanical

the clearance of each isolator must be at 3. Fill the tube with water until the level aligns with the
least 1/4 in. (6.35 mm). punch mark at one end of the chiller.
4. Check the water level at the opposite mark. If the water
Leveling the Unit level does not align with the punch mark, use full
length shims to raise one end of the chiller until the
The chiller must be set level within 1/16 in. (1.6 mm). water level at each end of the tube aligns with the
1. Measure and make a punch mark an equal distance up punch marks at both ends of the chiller.
from the bottom of each foot of the chiller. 5. Once the unit is level across its length, repeat Step 1
2. Suspend a clear plastic tube along the length of the through Step 3 to level the unit across its width. If
chiller as shown in the following figure. isolation pads have been used, shim the center
support.
Figure 8.

Note: Use of a laser level is an acceptable alternative

method to level the unit.
Important: Immediately report any unit damage
incurred during handling or installation at
the job site to the Trane sales office.

18 CDHF-SVX01E-EN
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Installation: Water Piping

Overview Valves—Drains and Vents
The following water piping circuits must be installed and
connected to the chiller: NOTICE:
• Pipe the evaporator into the chilled water circuit.
Waterbox Damage!
• Pipe the condenser into the cooling tower water circuit.
Do not over-tighten or use excessive Teflon® pipe tape
Note: Piping must be arranged and supported to avoid when installing valves, drains, plugs and vents on cast
stress on the equipment. It is strongly iron water boxes. Failure to follow these instructions
recommended that the piping contractor does not could result in damage to the waterbox.
run pipe closer than 3 feet (0.91 m) minimum to the
equipment. This will allow for proper fit upon 1. Install field-supplied air vents and drain valves on the
arrival of the unit at the job site. Any adjustment waterboxes. Each waterbox is provided with a National
that is necessary can be made to the piping at that Pipe Thread Female (NPTF) vent and drain connection;
time. Expenses that result from a failure to follow depending on the waterbox types ordered, the
this recommendation will not be paid by Trane. openings may be 1/4 in. (6 mm), 1/2 in. (13 mm), or
3/4 in. (19 mm). Plastic plugs are factory-installed in
Piping suggestions for each of the water circuits listed
both openings for shipment; remove and discard these
above are outlined in “Evaporator and Condenser Water
plugs before installing the waterbox vents and drain
Piping,” p. 21. General recommendations for the
valves.
installation of field supplied piping components (e.g.,
valves, flow switches, etc.) common to most chiller water
circuits are listed below. NOTICE:
Over-pressurization!
Water Treatment Failure to install pressure-relief valves in the condenser
and evaporator water circuits could result in waterbox
The use of untreated or improperly treated water in a damage due to hydrostatic expansion.
CenTraVac may result in inefficient operation and possible
tube damage. 2. If necessary for the application, install pressure-relief
valves at the drain connections on the evaporator and
Important: Trane strongly recommends using the
condenser waterboxes. To do so, add a tee with the
services of a qualified water treatment
relief valve attached to the drain valve.
specialist to determine necessary water
treatment. A label with a customer To determine whether or not pressure relief valves are
disclaimer note is affixed to each unit. needed for a specific application, keep in mind that:
a. Vessels with close-coupled shutoff valves may
NOTICE: cause high potentially damaging hydrostatic
Proper Water Treatment! pressures as fluid temperature rises.
The use of untreated or improperly treated water in a b. Relief valves are required by American Society of
CenTraVac could result in scaling, erosion, corrosion, Mechanical Engineers (ASME) codes when the shell
algae or slime. It is recommended that the services of a waterside is ASME. Follow ASME guidelines or
qualified water treatment specialist be engaged to other applicable codes to ensure proper relief valve
determine what water treatment, if any, is required. installation.
Trane assumes no responsibility for equipment failures
which result from untreated or improperly treated
water, or saline or brackish water. Strainers
Pressure Gauges NOTICE:
Locate pressure gauge taps in a straight length of pipe. Tube Damage!
Place each tap a minimum of one pipe diameter Failure to install strainers in all water piping entering
downstream of any elbow, orifice, etc. For example, for a the chiller could result in tube plugging conditions that
6 in. (152 mm) pipe, the tap would be at least 6 in. damage unit components.
(152 mm) from any elbow, orifice, etc.
Install a strainer in the entering side of each piping circuit
to avoid possible tube plugging in the chiller with debris.

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Installation: Water Piping

Required Flow-Sensing Devices 4. Verify that the direction-of-flow arrow on the switch
points in the same direction as actual water flow
Use flow paddle switches (see “Paddle Switches,” p. 20), through the piping circuit.
differential pressure switches or ifm efector® flow 5. Remove all air from the piping circuit to prevent
detection controller and sensor (see “Water Flow possible flow switch “fluttering”.
Detection Controller and Sensor,” p. 20) in conjunction
6. Adjust the flow switch to open when water flow is less
with the pump interlocks to verify evaporator and
than normal.
condenser water flows.
To ensure adequate chiller protection, wire the chilled- Water Flow Detection Controller and Sensor
water and condenser-water flow switches in series with the
appropriate water pump interlock. Refer to the wiring Figure 10. Installation of ifm efector flow detection
diagrams that shipped with the unit for specific electrical controller and sensor
connections.
Unless stated otherwise, all flow sensing devices must be If factory-provided,
field supplied. Be sure to follow the manufacturer’s located in control panel.
recommendations for device selection and installation
(see Figure 9). Components:
A. E40174 – 1/2" NPT adapter (for flow probe)
Also, review the following general flow switch installation B. SF6200 – Flow probe
C. SN0150 – Flow control monitor
guidelines.
4
D.
E.
E70231 – Combicon connectors (quantity 5)
E10965 – Micro DC cable, 10m length, PUR jacket
Paddle Switches F. F53003 – Din rail, 40mm length
3
Figure 9. Flow switch installation

n
1 2 pter (A) into pipe.
w probe (B) into adapter (A).
2
rail (F) into control cabinet.
trol monitor (C) onto DIN rail (F).
3 able (E) to flow probe (B), (hand tighten only).
in combicon connectors (D) according to
4 gram.
outputs for flow, wire-break, and/or 1
ure monitoring, according to wiring diagram.

w monitoring L
monitoring AC

5 5 n series, use Jumper N

ram at right.

toring
Jumper
monitoring

1. Flow switch body re monitoring

delay time
quid / gas
2. One (1) pipe size larger bushing to avoid paddle Output to
control cabinet

interference onitoring can

rated using
1, and 12.
3. Pipe coupling
4. Flow switch paddle
5. Five (5) pipe diameters (no turns or fittings)

1. Mount the 1/2-in. NPT adapter in a horizontal or

1. Mount the flow paddle switch upright in horizontal
vertical section of pipe. The maximum distance from
section of pipe. Allow at least five pipe diameters of
the control panel must not exceed 9 meters (29.5 ft)
straight, horizontal run on each side of the switch.
(see item labeled “1” in Figure 10, p. 20). Allow at least
Whenever possible, avoid locations adjacent to
five pipe diameters straight run of pipe upstream of the
elbows, orifices, and valves.
sensor location, and three pipe diameters straight run
2. To ensure that the flow switch operates as designed, of pipe downstream of the sensor location.
adjust the length of the flow switch paddle to
Note: In the case of a horizontal pipe, mounting the
compensate for the pipe diameter and the height of the
sensor in the side of the pipe is preferred. In the
coupling used to install the switch.
case of a vertical pipe, mounting the sensor in
3. Install the flow switch using a coupling that is large a place where the water flows upwards is
enough to allow the insertion of a bushing one pipe preferred.
diameter larger than the flow switch base as shown in
2. Insert the flow probe through the 1/2-in. NPT adapter
Figure 9. This will prevent interference with the flow
as near the center of the pipe as possible (see item
switch paddle.
labeled “2” in Figure 10, p. 20). Finger-tighten the

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Installation: Water Piping

1/2-in. NPT adapter; then, tighten with a wrench an

additional 1-1/4 turns. Figure 11. ifm efector flow sensing device terminal
connection
Note: When installed, the tip of the ifm efector sensor
probe must be at least 1 in. (2.54 cm) away from
any pipe wall. Placing the tip of the probe at the
center of the pipe is preferred.
3. Install the Micro DC Cable by inserting it through the
wire openings on the back side of the control panel (see
item labeled “3” in Figure 10, p. 20). Install the
supplied Micro DC Cable (9 meters [25 ft] in length) to
the Flow Probe and hand-tighten the connector nut. 7
4. Plug the other end of the Micro DC Cable into the Flow
Control Monitor with the Combicon connector (see
item labeled “4” in Figure 10, p. 20). Refer to Figure 11
for cable wiring.

NOTICE:
Do Not Apply Electrical Power to a Unit in
a Vacuum!
NOTICE:
Applying electrical power to a motor in a vacuum could
cause damage to the motor. In addition, on units with Proof of Flow Switch!
inside-the-delta solid state starters, all power to the Evaporator and condenser water circuits require proof
unit must be disconnected prior to evacuating the unit of flow switches.
as line power is directly applied to the motor terminals
4, 5, and 6. Failure to disconnect power to units with • Failure to include the proof of flow devices and/or
inside-the-delta solid state starters during evacuation jumping out these devices could cause the unit to
or when the unit is in a deep vacuum could cause stop on a secondary level of protection.
compressor motor damage.
• Frequent cycling on these higher level diagnostic
devices could cause excessive thermal and pressure
5. Apply power to the chiller control panel to verify the
cycling of unit components (O-rings, gaskets,
Flow Control Monitor has power and the Low Volt
sensors, motors, controls, etc.) and/or freeze
Broken Wire Relay light is not lit.
damage, resulting in premature failure of the chiller.
6. Remove all air from the piping circuit prior to adjusting
Failure to provide flow switches or jumping-out of
the low water flow setpoint. switches could result in severe equipment damage.
7. Reduce the water flow to the minimum allowable flow
and adjust the Flow setting on the Flow Control Evaporator and condenser proof of flow switches (either
Monitor (see item labeled “7” in Figure 11). Adjusting flow or Delta-P) are required as shown on wiring
the “Flow” potentiometer clockwise (+) reduces the diagrams. These switches are used with control logic to
flow setting cutout and adjusting counterclockwise (-) confirm flow prior to starting a unit and to stop a running
increases the flow setting cutout. unit if flow is lost. For trouble shooting, a viewable
diagnostic is generated if a proof of flow switch does not
Note: The “Temp” potentiometer on the ifm efector
close when flow is required.
control module has no effect in Trane
application. It is not necessary to make
adjustments to the “Temp” potentiometer. Evaporator and Condenser Water
8. Once the cutout setting is adjusted, the cutout setpoint Piping
will be indicated with a yellow light on the Flow Control
Monitor LED bar graph display. When the water flows Figure 12 and Figure 13, p. 22 illustrate the recommended
are higher than the cutout, a green light will indicate (typical) water piping arrangements for the evaporator
proper flow status. If the flows fall below the cutout and condenser.
setpoint, a red light will indicate low/no flow status.

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Installation: Water Piping

Piping must be arranged and supported to avoid stress on

Figure 12. Typical evaporator water piping circuit the equipment. It is strongly recommended that the piping
contractor does not run pipe closer than 3 feet (0.91 m)
minimum to the equipment. This will allow for proper fit
Outlet upon arrival of the unit at the job site. Any adjustment that
2 1 7 3 4 5 4 is necessary can be made to the piping at that time.
2 Expenses that result from a failure to follow this
10 recommendation will not be paid by Trane.

2 Waterboxes with multiple pass arrangements utilize a

baffle to separate the passes. These baffles are designed
Inlet
for a maximum pressure of 20 psid. If larger pressure
6 9 2 3 4 5 4 drops are expected in the application, contact your local
Trane representative to discuss special waterbox options.
1. Balancing Valve 6. Strainer Important: Water flows must be piped in accordance
2. Gate (Isolation) Valve or Ball 7. Chilled Water Flow Switch with nameplate designation.
Valve (5S1)(a)
Field-provided isolation valves for the evaporator and
3. Thermometer (if field supplied) 8. Pump condenser water lines should be installed upstream and
4. Waterbox Nozzle Connection 9. Pressure Gauge(b) downstream of the heat exchangers, and be installed far
5. Drain, Vent, Anode
enough away from the chiller to also provide practical
(a) Flow switch 5S1 may be installed in either the entering or leaving leg service isolation for flow sensing devices, field
of the chilled water circuit.
(b) It is recommended to pipe the gauge between entering and leaving pipes. thermometers, flexible connectors, and any removable
A shutoff valve on each side of the gauge allows the operator to read pipe spools.
either entering or leaving water pressure.
Ensure that the evaporator water piping is clear, check it
after the chilled water pump is operated but before initial
Figure 13. Typical condenser water piping circuits chiller start-up. If any partial blockages exist, they can be
detected and removed to prevent possible tube damage
resulting from evaporator freeze-up or erosion.
Outlet For applications that include an “infinite source” or
4 5 4 3 7 1 2 8 “multiple-use”, cooling condenser water supply, install a
2
valved bypass “leg” (optional) between the supply and
10
return pipes. This valved bypass allows the operator to
2 short-circuit water flow through the cooling condenser
Inlet
when the supply water temperature is too low. For
additional application information, refer to Engineering
4 5 4 3 2 9 6 Bulletin: Condenser Water Temperature Control - For
CenTraVac Centrifugal Chiller Systems with Tracer
1. Balancing Valve
AdaptiView Controls (CTV-PRB006-EN).
2. Gate (Isolation) Valve or Ball Valve Note: System refrigerant pressure differential must be
3. Thermometer (if field supplied) maintained above 3 psid (21 kPa) at all times.
4. Waterbox Nozzle Connection Failure to do so could result in operating problems.
5. Drain, Vent, Anode
6. Strainer Water Piping Connections
7. Condenser Water Flow Switch (5S2)(a)
8. 3-Way Valve (Optional) All standard units use grooved-pipe connections. These
9. Condenser Water Pump are grooved-end NSP (Victaulic style) pipe connections.
10. Pressure Gauge(b) Flanged connections are optional.
Notes:
1. Some type of field-supplied temperature control device may be Piping joined using grooved type couplings, like all types
required to regulate the temperature of the heat-recovery condenser of piping systems, requires proper support to carry the
water circuit. For application recommendations, refer to Heat Recovery
Seminar (Part 2): "Systems/Equipment (AM-FND-8). weight of pipes and equipment. The support methods
2. Install a bypass valve system to avoid circulating water through the used must eliminate undue stresses on joints, piping and
auxiliary shell when the unit is shut down.
3. On multiple pass condensers, entering condenser water must enter at other components; allow movement where required, and
the lowest nozzle. provide for any other special requirements (i.e., drainage,
(a) The Flow Switch 5S2 may be installed in either the entering or leaving etc.).
leg of the chilled water circuit.
(b) It is recommended to pipe a single gauge between entering and leaving Note: Plug-type sensor extension cables are available for
pipes.
purchase from Trane Parts Service if needed. These
sensor extension cables may be necessary if the

22 CDHF-SVX01E-EN
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Installation: Water Piping

waterboxes are changed or if the temperature

sensors are moved out into the unit piping for Figure 14. Typical grooved pipe connection
better mixed temperature readings.

Table 4. Evaporator water piping connection sizes

Nominal Pipe Size
1 Pass 2 Pass 3 Pass
EVSZ(a) Inch mm Inch mm Inch mm
080 12 323.9 10 273.0 8 219.1
142 16 406.4 12 323.9 10 273.0
210 16 406.4 14 355.6 12 323.9
250 16 406.4 14 355.6 12 323.9
(a) EVSZ = Evaporator Shell Size; S = Short Shell, L = Long Shell, E = Ex-
tended Shell

Table 5. Condenser water piping connection sizes

Nominal Pipe Size
2 Pass
CDSZ(a) Inch mm
080 10 273.0
142 12 323.9
210 14 355.6
250 14 355.6
(a) CDSZ =Condenser Shell Size; S = Short Shell, L = Long Shell, E = Ex-
tended Shell

Waterbox Locations
If removal of waterboxes is necessary, refer to “Waterbox
Removal and Installation,” p. 75.
If the waterboxes on any of the shells are exchanged end-
for-end, be sure to reinstall them right side up to maintain
the correct baffle arrangements. Use a new gasket with
each waterbox cover.

Grooved Pipe Coupling

A customer-supplied, standard flexible grooved pipe
coupling (Victaulic Style 77 or equivalent) should be used
to complete the Victaulic connection for both 150 psig or
1035 kPa and 300 psig or 2068 kPa waterboxes.
When a flexible coupling such as this is installed at the
waterbox connections, other flexible piping connectors
(i.e., braided-steel, elastomeric arch, etc.) are usually not
required to attenuate vibration and/or prevent stress on
the connections.

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Installation: Water Piping

Table 6. Water piping connection components Figure 16. Typical shipping location for flange

Customer Piping Connection Leg

support
Unit Connection
Unit Model Type Victaulic Flanged
Flanged (Condenser
CDHF and 032–050 150 psig No adapter
CDHG and 1035 kPa non- Customer required
marine only) provided
Victaulic coupling Trane provided
CDHF and
Victaulic (All others) Victaulic-to-
CDHG
flange adapter

Figure 15. Customer piping connection types

Flanged Victaulic
Waterbox
Water Box Waterbox
Water Box Screw Adapter

Customer
Customer In this case, the use of flexible type connectors (i.e.,
braided steel, elastomeric arch, etc.) are recommended to
attenuate vibration and prevent stress at the waterbox
connections.
All flange-to-flange assembly bolts must be provided by
the installer. Bolt sizes and number required are given in
Flange Adaptor
Flange Adaptor Style 77
Style 77Flexible
Flexible Table 7, p. 25. The four draw-bolts needed for the 16 in.
Trane Provided
Trane provided CustomerProvided
Customer provided (406 mm) Style 741 (150 psig or 1035 kPa) adapters are
provided. The Style 741, 150 psig or 1035 kPa flange
• Refer to the coupling manufacturer’s guidelines for adapter requires a smooth, hard surface for a good seal.
specific information concerning proper piping system
design and construction methods for grooved water Connection to other type flange faces (i.e., raised, serrated,
piping systems. rubber, etc.) will require the use of a flange washer
between the faces. Refer to the flange adapter
• Flexible coupling gaskets require proper lubrication
manufacturer’s guidelines for specific information.
before installation to provide a good seal. Refer to the
coupling manufacturer’s guidelines for proper The flange-adapter gasket must be placed with the color-
lubricant type and application. coded lip on the pipe and the other lip facing the mating
flange.
Flange-Connection Adapters
NOTICE:
Piping Connection Leaks!
NOTICE: To provide effective seal, gasket contact surfaces of
Never Weld to Cast Boxes! adapter must be free of gouges, undulations or
deformities. Failure to provide effective seal could result
Adapters must be used to convert flanges. Welding to
in equipment or property-only damage.
cast boxes will result in equipment damage.

When flat-face flange connections are specified, flange-to- Figure 17. Modifying 300 psig flange adaptors for flat-
groove adapters are provided (Victaulic Style 741 for faced flange application
150 psig or 1035 kPa systems; Style 743 for 300 psig or
Remove to mate
2068 kPa systems). The adapters are shipped bolted to one to flat-faced
of the chiller end-supports. Adapter descriptions are given flanges
in Table 7, p. 25. The flange adapters provide a direct, rigid
connection of flanged components to the grooved-pipe
chiller waterbox connections.

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Installation: Water Piping

Victaulic Gasket Installation 3. Align and bring two pipe ends together and slide
gasket into position centered between the grooves on
1. Inspect supplied gasket to be certain it is suited for each pipe. No portion of the gasket should extend into
intended service (code identifies gasket grade). Apply the groove on either pipe.
a thin coat of silicone lubricant to gasket tips and 4. Open fully and place hinged Victaulic flange around
outside of gasket. the grooved pipe end with the circular key section
2. Install gasket, placing gasket over pipe end and making locating into the groove.
sure gasket lip does not overhang pipe end. Refer to 5. Insert a standard bolt through the mating holes of the
Figure 18 for gasket configuration. Victaulic flange to secure the flange firmly in the
groove.
Figure 18. Typical Victaulic flange gasket configuration
6. Tighten fasteners alternately and equally until housing
bolt pads are firmly together (metal to metal); refer to
“Bolt-Tightening Sequence for Water Piping
Connections,” p. 25. Do not excessively tighten
fasteners.
Note: Uneven tightening may cause gasket to pinch.

Table 7. Installation data for 150 psig flange adapters (Style 741)
Nominal Pipe Size Assembly Bolt Size(a) Number of Bolt Pattern Diameter Weight
Assembly Bolts
Inch mm Inch mm Required Inch mm Pounds kg
4 114.3 5/8 x 3 16 x 76 8 7.5 191 7.7 3.5
5 141.3 3/4 x 3-1/2 19 x 89 8 8.5 216 9.3 4.2
6 168.3 3/4 x 3-1/2 19 x 89 8 9.5 241 10.3 4.7
8 219.1 3/4 x 3-1/2 19 x 89 8 11.75 298 16.6 7.5
10 273.0 7/8 x 1/4 22 x 6 12 14.25 362 24.2 11.0
12 323.9 7/8 x 1/4 22 x 6 12 17 432 46.8 21.2
14 355.6 1 x 4-1/2 25 x 114 12 18.75 476 75 34.0
16 406.4 1 x 4-1/2 25 x 114 16 21.25 540 90 40.8
18 457 1.13 x 4.75 16 22.75 578 100 45.4
20 508 1.13 x 5.25 20 25.00 635 120 54.4
(a) Bolt size for conventional flange to flange connection. Longer bolts are required when flange washer must be used.

Bolt-Tightening Sequence for Table 8. Flange bolt torque recommendations for

O-ring and flat-gasket piping connections
Water Piping Connections Bolt Size Gasket Type

This section describes a bolt-tightening sequence for O-Ring Flat

Inch mm ft·lb (N·m) ft·lb (N·m)
flanges with flat gaskets or O-rings. Remember that
improperly tightened flanges may leak. Note: Bolt size is determined by the diameter of bolt shank.

Note: Before tightening any of the bolts, align the flanges. Flanges with 4, 8, or 12 Bolts
Flange bolt torque requirements are provided in
Table 8. Tighten all bolts to a snug tightness, following the
numerical sequence for the appropriate bolt pattern as
Table 8. Flange bolt torque recommendations for shown below. Repeat this sequence to apply the final
O-ring and flat-gasket piping connections torque to each bolt.
Bolt Size Gasket Type
O-Ring Flat
Inch mm ft·lb (N·m) ft·lb (N·m)
3/8 9.5 25 (34) 12–18 (16–24)
1/2 13 70 (95) 33–50 (45–68)
5/8 16 150 (203) 70–90 (95–122)
3/4 19 250 (339) 105–155 (142–210)

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Installation: Water Piping

and move progressively around the flange in a clockwise

7 1 direction.
1 3

4 5 1 5 9
13
17
24 21
8 3 20

4 2 16
2 6 12
4 bolt flange 8 bolt flange 8 3

1 5 4 7

12 9 11

15
5 3
8 19
22 23
4 7 18
3 14
10 6 2
10 11
6 2 Evaporator Waterbox Covers
12 bolt flange
Ensure that the waterbox head rests tightly against the
Flanges with 16, 20, or 24 Bolts tube sheet, and then snugly tighten the 26 bolts in
sequential order as shown in the figure below. If excessive
Tighten only the first half of the total number of bolts to a tube sheet crown prevents the head from contacting the
snug tightness, following the numerical sequence for the tube sheet, tighten the bolts located where the greatest
appropriate bolt pattern as shown below. Next, gaps occur. Be sure to use an equal number of bolt turns
sequentially tighten the remaining half of the bolts in from side to side. Then, apply final torque to each bolt in
numerical order. sequential order.

1 5 1 5 9 21 13 3 1 11 19
20 7
16 9 5
16 13
12 13 17 17 15
12
8 3 3
8 25 23
7 7
4 4
11 9 10
11 18
14 15 26
15 14 24
10 19
6 2 10 6 2
16 18
16 bolt flange 20 bolt flange
6 8
20 12 2 4 14 22
1 5
24 9
13 20 13
17 16 17 Pressure Testing Waterside Piping
12 21
3
8 3
7 4 7
NOTICE:
11 22 11
15 18 15 Equipment Damage!
14 19
19 10 Do not over pressurize the system or exceed design
6 2 23
pressure. Always perform as a hydro pressure test with
24 bolt flange water present in piping and waterboxes. Failure to
follow these recommendations could result in
Flanges with More than 24 Bolts equipment damage.

Sequentially tighten the first 12 bolts to a snug tightness, Waterside design pressure is either 150 or 300 psig; refer
following the numerical sequence as shown below. to unit nameplate or to submittal documentation.
Tighten the next 12 consecutively numbered bolts in
sequence to the final torque. Then, apply final torque to
the first 12 bolts and the bolts not yet tightened (i.e.,
unnumbered bolts in the figure below). Start with bolt “1”

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Vent Piping
Refrigerant Vent Line stainless-steel pump connector (such as the stainless-steel
type MFP, style HNE, flexible pump connector from
Vibration Mounting and Control, Inc.) or equivalent is
General Requirements
recommended.
State and local codes, and ASHRAE Standard 15 contain
requirements for venting the relief device on the chiller to Vent Line Sizing
the atmosphere outside of the building. These Vent line size must conform to local codes and
requirements include, but are not limited to, permitted requirements. In most cases, local codes are based on
materials, sizing, and proper termination. ASHRAE Standard 15. ASHRAE Standard 15 provides
Note: The following information is a general outline of specific requirements for the discharge piping that allows
vent-line installation requirements based on pressure-relief devices to safely vent refrigerant to the
ASHRAE Standard 15. Most codes contain similar atmosphere if over pressurization occurs. In part, the
requirements but may vary in some significant standard mandates that:
areas. The installer must check state and local • The minimum pipe size of the vent line must equal the
codes and follow the specific requirements size of the discharge connection on the pressure-relief
applicable to the location. device. A larger vent line size may be necessary,
depending on the length of the run.
Purge Discharge • Two or more relief devices can be piped together only
To comply with ASHRAE Standard 15, the discharge if the vent line is sized to handle all devices that could
piping from purge units that remove noncondensible gas relieve at the same time.
from refrigerating systems must conform to the ASHRAE • When two or more relief devices share a common vent
Standard 15 requirements for relief piping. To help meet line, the shared line must equal or exceed the sum of
this requirement, the purge discharge is factory-piped to the outlet areas of all upstream relief devices,
the relief device assembly. depending on the resulting back pressure.
Section 9.7.8.5 of ASHRAE Standard 15-2007 provides
Vent Line Materials guidance for determining the maximum vent line length.
All materials in the relief device vent system must be Appendix H of the standard provides the equation (shown
compatible with the refrigerant in use. Commonly used in Figure 22, p. 31) and data necessary to properly size the
and accepted piping materials include steel and DWV vent line at the outlet of a pressure-relief device or fusible
(drain/waste/vent) copper. Consult local codes for plug.
restrictions on materials. Consult with the manufacturers The equation accounts for the relationship between pipe
of any field-provided components or materials for diameter, equivalent pipe length, and the pressure
acceptable material compatibility. difference between the vent line inlet and outlet to help
Note: PVC piping is compatible with R-123, but the glue ensure that the vent line system provides sufficient flow
that joins the sections of plastic pipe may not be. capacity.
When considering a vent system constructed of Table 9, p. 30 provides additional information based on
plastic piping, such as PVC, ensure that both the ASHRAE Standard 15, including:
pipe material and the adhesive have been tested • Capacities of various vent line sizes and lengths.
for refrigerant compatibility. In addition, verify that However, this data applies only to conventional
the local codes permit PVC for refrigerant vent pressure-relief valves and NOT to balanced relief
lines; even though ASHRAE Standard 15 doesn’t valves, rupture members (as used on Trane®
prohibit its use, some local codes do. centrifugal chillers), fusible plugs, or pilot-operated
Testing conducted in Trane laboratories has qualified the valves.
following materials for PVC pipe construction as being • A simplified method to determine the appropriate
compatible with R-123: vent-line size, with Figure 22, p. 31. Enter the figure
Primer/Cleaner: with the total C value, read across to a pipe curve and
• Hercules—PVC Primer #60-465 down to find the maximum allowable length for that
size pipe.
• RECTORSEAL® PVC Cleaner—Sam™ CL-3L
To determine the total C value for a specific unit, add
Adhesives:
the appropriate C values for the evaporator, standard
• Hercules—Clear PVC, Medium Body/Medium Set,
condenser, and economizer. If the unit is equipped with
#60-020
any options (e.g., heat recovery, free cooling, or an
• RECTORSEAL—PVC Cement, Gene™ 404L auxiliary condenser), add the applicable C value(s) for
Flexible connection devices for vibration isolation must those options to the total as well.
also be compatible with the vented refrigerant. A flexible

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Vent Piping

Note: Table 9, p. 30 and Figure 22, p. 31 are applicable • When attaching the vent line to the chiller, do not apply
only for non-manifolded vent-line runs connected threading torque to the outside pipe of the rupture disc
to a 15 psi rupture disc relief device. The pipe assembly.
length provided by the table is in “equivalent feet.”
The vent-line length in equivalent feet is the sum of NOTICE:
the linear pipe length plus the equivalent length of
the fittings (e.g., elbows).
Rupture Disc Damage!
Do not apply threading torque to the outside pipe.
Failure to follow this recommendation could result in
Vent Line Installation damage to the rupture disc assembly.
Important: Before constructing the rupture disc vent
• Provide support as needed for the vent line. Do not use
line, consult local codes for applicable
the rupture disc assembly to support the vent line
guidelines and constraints.
piping.
All CenTraVac centrifugal chillers are equipped with • Use a flexible connection between the vent-line and
carbon rupture discs. If refrigerant pressure within the the rupture disc assembly to avoid placing stress on
evaporator exceeds 15 psig the rupture disc breaks and the rupture disc. (Stress can alter rupture pressure and
shell pressure is relieved as refrigerant escapes from the cause the disc to break prematurely.) The flexible
chiller. connector used to isolate the rupture disc from
There are two rupture discs on CDHF chillers, one per excessive vent line vibration must be compatible with
refrigerant circuit. See Figure 19, p. 29 for locations. the refrigerant in use. Use a flexible, steel connector
such as the stainless-steel type MFP, style HNE, flexible
A cross-section of the rupture disc assembly appears in
pump connector (from Vibration Mounting and
Figure 19, p. 29 along with an illustration indicating the
Control, Inc.) or equivalent. Refer to Figure 20, p. 29 for
location of the rupture disc on the suction elbow.
a recommended relief piping arrangement.
Important: If a RuptureGuard is to be installed, remove • An individual vent line is normally installed for each
and discard the factory-installed rupture relief device. It is permissible to manifold the rupture
disc; for more information, refer to discs of several machines into a common vent line
Installation, Operation, and Maintenance: provided that the appropriate ASHRAE Standards and
RuptureGuard Pressure Relief System local code requirements for manifolded relief devices
Option (CTV-SVX06B-EN, or the most are followed.
recent version).
Note: Figure 20, p. 29 does NOT apply for manifolded
Several general recommendations for rupture disc vent vent lines.
line installation are outlined below. • Route the vent-line piping so that it discharges
Note: If the rupture disc was removed for service or vent outdoors in an area that will not spray refrigerant on
line piping installation, the rupture disc must be anyone. Position the vent line discharge at least 15 ft
reinstalled (as shown in Figure 19, p. 29) using the (4.57 m) above grade level and at least 20 ft (6.1 m)
following installation procedure: from any building opening. Provide a vent line
• Verify that the vacuum support side of the rupture disc termination that cannot be blocked by debris or
is positioned as shown in the cross-section view that accumulate rainwater.
appears in Figure 19, p. 29.
– Install the two bottom bolts though the pipe CAUTION
flanges.
Pressure-Relief Device Discharge Hazard!
– Install the rupture disc with a gasket on each side
between the pipe flanges. Orient the disc with the When a pressure-relief device operates, it could
discharge a large amount of fluid and/or vapor. An
reference arrow or vacuum support bar facing the
improper vent-line termination could result in personal
chiller side as shown in Figure 19, p. 29. injury and/or property-only damage.
– Install the two top bolts.
– Center the disc and gaskets to the flange bore.
– Hand tighten all bolts assuring equal pressure. NOTICE:
– Use a torque wrench set to 240 in·lb (27 N·m) with Proper Refrigerant Vent Line Termination!
a 9/16-in. socket.
Improperly terminating a refrigerant vent line could
– Tighten bolts in a star pattern, one half turn each, to
allow rain to enter the line. Accumulated rainwater
maintain even pressure on the disc. could cause the relief device to malfunction; or, in the
– Final torque on all bolts should be 240 in·lb case of a rupture disc, the rainwater pressure could
(27 N·m). cause the disc to rupture, allowing water to enter the
chiller. Failure to properly terminate a refrigerant vent
line could result in equipment damage.

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Vent Piping

• Provide a drip leg on the vent-line (see Figure 20,

p. 29). Provide a standard 1/4-in. FL x 1/4-in. NPT, Figure 20. Arrangement for rupture disc relief piping
capped refrigerant service valve to facilitate liquid
removal. alternate

NOTICE:
Equipment Damage! outside
All vent-lines must be equipped with a drip leg of wall
sufficient volume to hold the expected accumulation of
water and or refrigerant. The drip leg must be drained
periodically to ensure that it does not overflow and purge discharge
allow fluid to flow into the horizontal portion of the vent line
vent-line. Trane assumes no responsibility for support
equipment damage caused by insufficient drainage of this pipe
the drip leg.

• Consult local regulations and codes for any additional

flexible rupture disc
relief line requirements and refer to Refrigerant
steel assembly
Handling Guidelines (CTV-SVX05B-EN, or the most
connection
recent version).
drip leg
Figure 19. Illustrates rupture disc location, cross section (length as required
of rupture disc for easy access)

1/4 in. FL x 1/4 in.

NPT drain valve

Notes:
• If a RuptureGuard is to be installed, remove and
discard the factory-installed rupture disc; for more
information, refer to Installation, Operation, and
Maintenance: RuptureGuard Pressure Relief System
Option (CTV-SVX06B-EN, or the most recent version).
• The rated flow capacity of the RuptureGuard disk/valve
assembly is based on having straight pipe extending
past the spring mechanism downstream of the valve.
Be sure there are no crosses1, elbows, tees or any other
outside pipe gasket obstructions within the first nine inches of valve
assembly
discharge. See the chiller installation manual and
ASHRAE Standard 15-1992 for additional
requirements on piping rupture disk and relief valve
vent lines.

suction connection

rupture disc
cap

bolt

Note: Pipe connection is 3” NPT.

1 A derate on the rated flow capacity for this configuration is published in E/CTV-EB-10 (Engineering Bulletin: RuptureGuard™ Selection Guide).

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Vent Piping

Cr = C value from Table 9, p. 30 (convert C in lb/min to

Figure 21. RuptureGuard—external vent line and drip kg/s for SI)
leg (not provided)(a)
• f = Moody friction factor in fully turbulent flow
Rupture Purge
Vent to • d = inside diameter of pipe or tube, in (mm)
Disc Exhaust
Outdoors
• ln = natural logarithm
• P2 = absolute pressure at outlet of discharge piping, psi
(kPa)
Flange • P0 = allowed back pressure (absolute) at the outlet of
pressure relief device, psi (kPa)
P0 = (0.50 P) + atmospheric pressure
Note: For rupture discs on CenTraVac chillers, P is 15 lb.
Atmospheric pressure is at the elevation of the
installation above sea level; a default value is the
Outlet atmospheric pressure at sea level, 14.7 psi
Adapter (101.325 kPa).
Inlet Adapter
(Threaded)(a) Drain Line
Drain Valve
(a) The pipe-thread joint at the Inlet Adapter (Threaded) connects to the
chiller and must be leak-free. For more information, refer to Installation,
Operation, and Maintenance: RuptureGuard Pressure Relief System Op-
tion (CTV-SVX06B-EN, or the most recent version).

Table 9. “C” value used to determine rupture disc vent

line size CDHF and CDHG
Evaporator Size Condenser Size
(EVSZ) (CDSZ) Total C Value
250E 250L 175.74
210D 210D 112.93
250D 250D 122.62
250M 250M 146.36
250X 250X 164.74
Notes:
1. Rupture disc diameter is 3 inches (76 mm).
2. To determine the total “C” value for a specific unit, add the
appropriate “C” values for the evaporator, standard condenser and
economizer. If the unit is equipped with any options (e.g., heat
recovery, free cooling or an auxiliary condenser, add the applicable
“C” values to this total. With this new sum, refer to Figure 22, p. 31 to
determine the vent line pipe diameter.
3. If piping multiple rupture discs to a common vent line, first determine
the total “C” value for each rupture disc, then add all “C” values
together and apply the result to the “Vent Pipe Sizing Chart”
Figure 22, p. 31.
4. RuptureGuard size based on “C” value:
3 in. valve: “C” value 0 to 104.20
4 in. valve: C value 104.21 to 223.9

For CenTraVac chillers using a rupture disc relief:

• L = equivalent length of discharge piping, ft (m)
• Cr = rated capacity as stamped on the relief device in
lb/min (kg/s), or SCFM multiplied by 0.0764 lb/min
(convert multiplier in lb/min to kg/s for SI)

30 CDHF-SVX01E-EN
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Vent Piping

Figure 22. Rupture disc vent pipe sizing

Pipe size as a Function of “C” Value and Length of Run
1000

Pipe Size (I.D.)

friction factor

6 NPS
(6.065)
f=0.0149
"C" Value

100
5 NPS
(5.048)
f=0.0155

4 NPS
(4.026)
f=0.0163

3 NPS
(3.068)
f=0.0173

10
10 100 1000
L = Pipe Length (Equivalent Feet)
(Feet x .348 = Meters)
ANSI/ASHRAE Standard 15-2007

L= .214d (P 0 - P 2) - d * ln(P0 / P2)

5 2 2

f C2R 6f
P0= (0.5 * 15) + P2
P2= 14.7 psia
f= Moody Friction Factor in fully turbulent flow
Note: This figure, provided as a reference, is based on ASHRAE Standard 15-2007. Vent line size is typically dictated by state or local code which may be
different from ASHRAE Standard 15-2007 requirements.

CDHF-SVX01E-EN 31
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Insulation
Unit Insulation Requirements • 85°F dry bulb ambient temperature
• 75 percent relative humidity
Factory-installed insulation is available as an option for all
Operation outside of normal design conditions as defined
units. Factory installation does not include insulation of
above may require additional insulation; contact Trane for
the chiller feet; if required, insulation for chiller feet is
further review.
provided by others. In applications where the chiller is not
factory-insulated, install insulation over the areas outlined Note: If the unit is not factory-insulated: install insulation
and highlighted with dashed lines as shown in Figure 23, around the evaporator bulbwells and ensure that
p. 33. the bulbwells and connections for the waterbox
drains and vents are still accessible after insulation
Insulate all 1/4-in. (6.4-mm) eductor lines, one from the
is applied. The sensor modules (LLIDs) and
suction cover and one from the evaporator to prevent
interconnecting four wire cable (IPC bus) must be
sweating.
raised up above the field-installed insulation.
The quantities of insulation required based on unit size Secure the IPC bus to the insulation top/outer
and insulation thickness are listed in Table 10. Insulation surface after insulation is completed.
thickness is determined at normal design conditions which
Important: Do not insulate the motor housing, unit
are:
wiring, or sensor modules.
• standard comfort-cooling leaving chilled water
temperature
Table 10. Evaporator insulation requirements
Standard Unit Free Cooling
3/4 in. (19 mm) 3/8 in. (9.5 mm) 3/4-in. (19 mm) 3/8 in. (9.5 mm)
Insulation(a) Insulation(b) Insulation(a) Insulation(b)
EVSZ(a) (Square Feet) (Square Feet) (Square Feet) (Square Feet)
210 Duplex 1270 193 Not Available Not Available
250 Duplex 1308 193 Not Available Not Available
250 Duplex Medium 1410 280 Not Available Not Available
250 Duplex Extended 1500 280 Not Available Not Available
Note: Refrigerant pump equipped units are NOT insulated on the motor or refrigerant drain lines.
(a) 3/4-in. (19-mm) sheet insulation is installed on the evaporator, evaporator waterboxes, suction elbow and suction
cover.
(b) 3/8-in. (9.5-mm) sheet insulation is installed on all economizers. All liquid lines and other pipes require the use of 1/
2-in. (13-mm) pipe insulation or 3/8-in. (9.5-mm) sheet insulation. Copper oil eductor tube lines require pipe insulation.

Insulation Thickness
NOTICE:
Requirements Insulation Damage!
Factory applied insulation. All low-temperature To prevent damage to factory installed insulation:
surfaces are covered with 3/4 in. (19 mm) Armaflex II or • Do not allow the insulation to be exposed to
equal (thermal conductivity = 0.28 BTU/hr-ft sq.) excessive sunlight. Store indoors or cover with
(1.59 W/m2-K), including the evaporator, waterboxes and canvas to prevent exposure.
suction elbow. The economizer and motor cooling lines
are insulated with 3/8 in. (10 mm) and 1/2 in. (13 mm) • Do not use thinners and solvents or other types of
insulation respectively. paint. Use only water base latex.
The insulation is Armaflex or equivalent closed cell Failure to follow these recommendations could result in
insulation damage.
elastomeric insulation to prevent the formation of
condensation up to a dew point rating of 74°F K = 0.25.
Chillers in high humidity areas or ice storage, low leaving
water temperature (less than 36°F chilled water
temperature/glycol) units may require double thickness to
prevent formation of condensation.

32 CDHF-SVX01E-EN
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Insulation

Figure 23. Recommended area for unit insulation

Notes:
1. Bulbwells, drain and vent connections must be accessible after insulating.
2. Evaporators with ASME nameplates must have insulation cut out around the
Line to nameplate. Do not glue insulation to the nameplate.
eductor 3. All units with evaporator marine waterboxes wrap waterbox shell insulation
with strapping and secure strapping with seal.
4. Apply two-inch wide black tape on overlap joints. Where possible, apply
three-inch wide strip of 0.38 thick insulation over butt joint seams.
5. Insulate all economizer supports.
Line
from
evap
Filter drier and
eductor lines

Pipe (free
cooling only)
Suction
Control Suction cover
panel elbow
support Suction
connection
Pipe

Economizer

Pipe

See Notes Evaporator See Note 1 Eductor line See Notes

1&3 1&3

CDHF-SVX01E-EN 33
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Installation: Controls
This section covers information pertaining to the UC800 Figure 24. Wiring locations and connection ports
controller hardware. For information about the Tracer
AdaptiView™ display, which is used to interface with the
internal chiller data and functions provided by the UC800,
refer to Tracer AdaptiView™ Display for Water-Cooled
CenTraVac™ Chillers Operations Guide (CTV-SVU01D-EN,
or the most recent version).

UC800 Specifications
Power Supply
The UC800 (1A22) receives 24 Vac (210 mA) power from 10
the 1A2 power supply located in the chiller control panel.
11
Wiring and Port Descriptions
Figure 24 illustrates the UC800 controller ports, LEDs,
rotary switches, and wiring terminals. The numbered list Bottom View
following Figure 24 corresponds to the numbered callouts 1. Rotary Switches for setting BACnet® MAC address or MODBUS ID.
in the illustration. 2. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field
wired if used.
Figure 24. Wiring locations and connection ports 3. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field
wired if used.
4. Machine bus for existing machine LLIDs (IPC3 Tracer bus 19.200 baud).
IPC3 Bus: used for Comm4 using TCI or LonTalk® using LCI-C.
5. Power (210 mA at 24 Vdc) and ground terminations (same bus as
+ + + +24
VDC 6.
item 4). Factory wired.
Not used.
LINK MBUS
7. Marquee LED power and UC800 Status indicator (Table 11, p. 35).
8. Status LEDs for the BAS link, MBus link, and IMC link.
2 3 4 5 9. USB device type B connection for the service tool (Tracer TU).
10. The Ethernet connection can only be used with the Tracer AdaptiView
display.
11. USB Host (not used).

Communication Interfaces
6 6 There are four connections on the UC800 that support the
communication interfaces listed. Refer to Figure 24, p. 34
for the locations of each of these ports.
• BACnet MS/TP
7 • MODBUS Slave
8 • LonTalk using LCI-C (from the IPC3 bus)
• Comm 4 using TCI (from the IPC3 bus)

Rotary Switches
9
1 There are three rotary switches on the front of the UC800
controller. Use these switches to define a three-digit
address when the UC800 is installed in a BACnet or
10 MODBUS system (e.g., 107, 127, etc.).
Note: Valid addresses are 001 to 127 for BACnet and 001
11
to 247 for MODBUS.
Front View
LED Description and Operation
There are 10 LEDs on the front of the UC800. Figure 25
shows the locations of each LED and Table 11, p. 35
describes their behavior in specific instances.

34 CDHF-SVX01E-EN
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Installation: Controls

Figure 25. LED locations

NOTICE:
Marquee LED Electrical Noise!
Maintain at least 6 inches between low-voltage (<30V)
and high voltage circuits. Failure to do so could result in
LINK MBUS IMC electrical noise that could distort the signals carried by
the low-voltage wiring, including IPC.
TX

RX

LINK
SERVICE

ACT

Table 11. LED behavior

LED UC800 Status
Powered. If the Marquee LED is green solid, the
UC800 is powered and no problems exist.
Low power or malfunction. If the Marquee LED is
Marquee LED red solid, the UC800 is powered, but there are
problems present.
Alarm. The Marquee LED blinks Red when an alarm
exists.
The TX LED blinks green at the data transfer rate
when the UC800 transfers data to other devices on
LINK, MBUS, the link.
IMC The Rx LED blinks yellow at the data transfer rate
when the UC800 receives data from other devices on
the link.
The LINK LED is solid green if the Ethernet link is
connected and communicating.
Ethernet Link
The ACT LED blinks yellow at the data transfer rate
when data flow is active on the link.
The Service LED is solid green when pressed. For
Service
qualified service technicians only. Do not use.

CDHF-SVX01E-EN 35
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Installation: Controls

Figure 26. Standard control panel: Tracer AdaptiView main unit assembly left hand panel (showing low voltage and
higher voltage areas for proper routing of field wiring)

30 Volt Maximum 30–115 Volt Maximum

36 CDHF-SVX01E-EN
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Installation: Controls

Figure 27. Standard control panel: Tracer AdaptiView main unit assembly right hand panel (showing low voltage and
higher voltage areas for proper routing of field wiring)

30 Volt Maximum 30–115 Volt Maximum

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Installation: Controls

Figure 28. Optional control panel: Tracer AdaptiView main unit assembly left hand panel (showing low voltage and
higher voltage areas for proper routing of field wiring)

30V TO 115V 30V TO 115V

1K2 1T2 1T3 1T4

1X2 1S1 1K1
30V TO 115V
30V MAX

1T5 1T6 1T7

30V TO 115V 30V TO 115V

1A11
OR
1A4 1A5 1A6 1A7 1A26 1A8 1A9 1A12 1A23
30V TO 115V
30V MAX

OPTIONAL OPTIONAL
OPTIONAL OPTIONAL

30V TO 115V 30V TO 115V

1Q1

1Q6
1Q3
1Q2

1Q5
1Q4
1F1

1T1 1K26 1K27 1X1

1A1 1A2
30V TO 115V
30V MAX

30V MAX 30V TO 115V

1A25
OR
30V MAX

1A22 1A13 1A14 1A15 1A16 1A17 1A18 1A19 1A20 1A21 1A24

OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL

30V TO 115V

X19091218-01
30V MAX 30V MAX

30 Volt Maximum 30–115 Volt Maximum

38 CDHF-SVX01E-EN
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Installation: Controls

Figure 29. Optional control panel: Tracer AdaptiView main unit assembly right hand panel (showing low voltage and
higher voltage areas for proper routing of field wiring)

30 Volt Maximum 30–115 Volt Maximum

CDHF-SVX01E-EN 39
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Installation: Controls

Installing the Tracer AdaptiView

CAUTION
Display
Tension in Display Support Arm!
The Tracer AdaptiView display is boxed, shrink-wrapped, To prevent unexpected movement of the spring-loaded
and located behind the control panel during shipment. The support arm, ensure that the support arm is in the full
Tracer AdaptiView display must be installed at the site. upright position when removing the Tracer AdaptiView
display from the support arm. Failure to do so could
Important: The Tracer AdaptiView display and display
result in personal injury.
arm are to be installed by Trane, or an agent
of Trane. Note: Review “Adjusting the Tracer AdaptiView Display
1. Unwrap control panel and display arm. Locate the box Arm,” p. 41 prior to attaching the display as some
containing the Tracer AdaptiView display behind the adjustments may be required prior to attaching the
control panel (labeled A). display to the support arm base.
2. After the box containing the display has been 6. Position the Tracer AdaptiView display, with the LCD
removed, remove the shipping bracket from the back screen facing up, on top of the display support arm
of the control panel (B). base plate.
Note: Ensure the Trane logo is positioned so that it
will be at the top when the Tracer AdaptiView
display is attached to the display support arm.

A NOTICE:
Do Not Drop Display!
As you position the Tracer AdaptiView display on top of
the display support arm base plate, keep a firm grip on
the display. Failure to do so could result in equipment
or property-only damage.

7. Align the four holes in the display with the bolt holes
in the display support arm base plate.
B
8. Attach the Tracer AdaptiView display to the display
support arm base plate (E) using the M4 (metric size 4)
screws referenced in Step 3.
3. Remove the Tracer AdaptiView display from the box.
Note: Screws are M4 (metric size 4), 6 to 8 mm long,
and are shipped with the display. E

4. Plug the power cable (C) and the Ethernet cable (D) into
the bottom of the display.
Note: Both cables are already present and extend
from the end of the display arm.

5. Adjust the Tracer AdaptiView display support arm so

the base plate that attaches to the Tracer AdaptiView
display is horizontal.

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Installation: Controls

Adjusting the Tracer AdaptiView

Display Arm
The Tracer AdaptiView display arm may become too loose
or too tight and need adjustment. There are three joints on
the display arm that allow the Tracer AdaptiView display to
be positioned at a variety of heights and angles (refer to
items labeled 1, 2, and 3 in Figure 30).
To adjust the tension on the display arm:
• At each joint in the display arm, there is either a hex
bolt (1 and 2) or hex screw (3). Turn the hex bolt or
screw in the proper direction to increase or decrease
tension.
Note: Each hex bolt or screw is labeled with loosen/
tighten or +/- indicators.

Figure 30. Joint locations on the display arm

2 3

• Joint 3 has a 6 mm hex screw controlling the tension

on a gas spring, which allows the Tracer AdaptiView
display to tilt up and down.
• Joints 1 and 2 are covered by a plastic cap. Remove the
plastic cap to access the hex bolt. Adjust using a 13 mm
wrench as necessary.
• To adjust the swivel rotation tension of the Tracer
AdaptiView display, adjust the hex bolt located in the
support arm base plate, as described in Step 8 in
“Installing the Tracer AdaptiView Display,” p. 40. This
adjustment must be done prior to attaching the Tracer
AdaptiView display to the support arm base. Use a
14 mm wrench to adjust the tension.
• To adjust the left/right swivel of the entire display arm,
use a 13 mm wrench to adjust the bolt labeled 4 in
Figure 30.

CDHF-SVX01E-EN 41
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Electrical Requirements
Installation Requirements Electrical Requirements
Before wiring begins, observe the following electrical
WARNING requirements:
• Follow all lockout-tagout procedures prior to
Electrocution and Fire Hazards with performing installation and/or service on the unit.
Improperly Installed and Grounded Field • Always wear appropriate personal protective
Wiring! equipment.
Improperly installed and grounded field wiring poses • Wait the required time to allow the capacitor(s) to
FIRE & ELECTROCUTION hazards. To avoid these discharge; this could be up to 30 minutes.
hazards, you MUST follow requirements for field wiring • Verify that all capacitors are discharged prior to service
installation and grounding as described in NEC and using a properly rated volt meter.
your local/state electrical codes. All field wiring MUST • Use appropriate capacitor discharge tool when
be performed by qualified personnel. Failure to follow
necessary.
these requirements could result in death or serious
injury. • Comply with the safety practices recommended in
PROD-SVB06A-EN.
Unit-mounted starters are available as an option on most
units. While this option eliminates most field-installed WARNING
wiring requirements, the electrical contractor must still
complete the electrical connection for the following: Hazardous Voltage w/Capacitors!
• power supply wiring to the starter, Disconnect all electric power, including remote
• other unit control options present, and disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
• any field-supplied control devices.
inadvertently energized. For variable frequency drives
As you review this manual, along with the wiring or other energy storing components provided by Trane
instructions presented in this section, keep in mind that: or others, refer to the appropriate manufacturer’s
• All field-installed wiring must conform to National literature for allowable waiting periods for discharge of
Electric Code (NEC) guidelines, and any applicable capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. Failure to disconnect
state and local codes. Be sure to satisfy proper power and discharge capacitors before servicing could
equipment grounding requirements per NEC. result in death or serious injury.
• Compressor motor and unit electrical data (including
motor kW, voltage utilization range, rated load amps, For additional information regarding the safe discharge
of capacitors, see PROD-SVB06A-EN
and locked rotor amps) is listed on the chiller
nameplate.
• All field-installed wiring must be checked for proper
terminations, and for possible shorts or grounds. WARNING
Note: Always refer to the actual wiring diagrams that Personal Protective Equipment (PPE)
shipped with the chiller or the unit submittal for Required!
specific as-built electrical schematic and Always wear appropriate personal protective
connection information. equipment in accordance with applicable regulations
and/or standards to guard against potential electrical
NOTICE: shock and flash hazards. Failure to follow proper
handling guidelines could result in death or serious
Component Damage! injury.
Remove all debris from inside the starter panel. Failure
to do so could result in an electrical short and could
cause serious starter component damage. WARNING
Do not modify or cut enclosure to provide electrical access. Live Electrical Components!
Removable panels have been provided, and any During installation, testing, servicing and
modification should be done away from the enclosure. If troubleshooting of this product, it may be necessary to
the starter enclosure must be cut to provide electrical work with live electrical components. Have a qualified
access, exercise care to prevent debris from falling inside licensed electrician or other individual who has been
the enclosure. Refer to installation information shipped properly trained in handling live electrical components
with the starter or submittal drawings. perform these tasks. Failure to follow all electrical
safety precautions when exposed to live electrical
components could result in death or serious injury.

42 CDHF-SVX01E-EN
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Electrical Requirements

Trane-Supplied Starter Wiring wire estimation purposes, double check the following list
as there are two starters to be wired.)
This information is applicable to Starter 1 for
Compressor 1 as well as Starter 2 for Compressor 2. (For
Table 12. Standard field power wiring requirements
Power Supply Wiring
to Starter Panel Starter Panel Terminals
3-Phase Line Voltage: Terminal Block (2TB3
2X3-L1, L2, L3, and GROUND(a)
or 2X3)
3-Phase Line Voltage: Circuit Breaker 2Q1-L1, L2, L3, and GROUND
Starter to Motor Power Wiring Starters
Remote Starter to Chiller Motor Junction Box T1 through T6
Starter to Control Panel Unit Control Panel Max Terminal Minimum Circuit
120 Vac Control Wiring Starter Panel Terminals Terminations Wire Size Ampacity
120 Vac Power Supply (from starter to control 2X1-1, 2X1-2 1X1-1, 1X1-12
8 ga. (10 mm2) 40
panel) 2X1-20 (Ground) 1X1-18 (Ground)
High Pressure Cutout to Starter 2X1-4 1X1-4 14 ga. (2.5 mm2) 20
1Q1 Circuit Breaker to Starter 2X1-6 1X1-3 14 ga. (2.5 mm2) 20
Oil Pump Interlock 2X1-7, 2X1-8 1A7-J2-4, 1A7-J2-2 14 ga. (2.5 mm2) 20
Low Voltage Circuits Unit Control Panel
less than 30 Vac Starter Panel Terminals Terminations
Standard Circuits
2A1- J3-3-4, or 1A1-J5-1-2, 3-4
Inter Processor Communications (IPC) 2 wire with ground
2X1-12 to 13 if present (do not Shield ground at
Remote Mounted(b) Comm link.
ground shield at starter) 1X1- 22 (GND) only.
Notes:
1. All wiring to be in accordance with National Electrical Code and any local codes.
2. Oil pump motor: 1 PH, 3/4 hp, 11.7 full load amps at 115 Vac.
3. Auxiliary equipment must be powered from other sources as the chiller control panel power supplies are sized for the chiller loads only.
(a) Ground lug for a unit-mounted solid state starter or wye-delta starter is sized to accept 14 gauge solid to 8 gauge strand wire. If local codes require
different lug size, it must be field-supplied and -installed.
(b) Must be separated from 120 Vac and higher wiring.

Note: CPTR, Control Power Transformer (Enhanced

Electrical Protection Package option): A unit-
mounted, factory-wired, separate enclosure
positioned next to the control panel is available
when separate source control power is required.
This permits the controls to remain powered while
the three-phase line voltage is disconnected.
Contact your local Trane representative for more
information.

CDHF-SVX01E-EN 43
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Customer-Supplied Remote Starter Wiring

This information is applicable to Starter 1 for wire estimation purposes, double check the following list
Compressor 1 as well as Starter 2 for Compressor 2. (For as there are two starters to be wired.)

Table 13. Standard customer-supplied remote field wiring requirements

Power Supply Wiring
to Starter Panel Starter Panel Terminals
Starter by others 3-phase power wiring See starter by others schematic
Starter to Motor Power Wiring Starters Motor
Remote starter to chiller motor junction box T1 through T6 terminals T1 through T6 terminals
Starter to Control Panel Unit Control Panel Max Terminal Minimum Circuit
120 Vac Control Wiring Starter Panel Terminals Terminations Wire Size Ampacity
See starter by others schematic
120 Vac Power Supply 1X1-1, 1X1-12, 1X1-18
5X1-1, 8 ga. (10 mm2) 40
(from starter to control panel) (ground)
5X1-2, 5X1-20 (ground)
Power from control panel 1Q1 5X1-3 1X1-3, 1A23-J6-3 14 ga. (2.5 mm2) 20
Interlock relay signal 5X1-4 1A23-J10-1 14 ga. (2.5 mm2) 20
Start contactor signal 5X1-5 1A23-J8-1 14 ga. (2.5 mm2) 20
Oil pump interlock 5X1-7, 5X1-8 1A7-J2-4, 1A7-J2-2 14 ga. (2.5 mm2) 20
Run contactor signal 5X1-10 1A23-J6-12 14 ga. (2.5 mm2) 20
Transition complete 5X1-14 1A23-J12-2 14 ga. (2.5 mm2) 20
Low Voltage Circuits Unit Control Panel
less than 30 Vac Starter Panel Terminals Terminations
Standard Circuits
5CT4- white, black 1A23-J7-1,2
Current Transformers (see Table 14, p. 45) Note: Phasing must
5CT5- white, black 1A23-J7-3,4,
(Required)(a) be maintained
5CT6- white, black 1A23-J7-5,6,
5T17-236,237 1A23 –J5-1,2,
Note: Phasing must
Potential Transformers (Required)(a) 5T18-238,239 1A23 –J5-3,4,
be maintained
5T19-240,241 1A23 –J5-5,6
Notes:
1. All wiring to be in accordance with National Electrical Code and any local codes.
2. Starter by others specification available from your local Trane sales office.
(a) Must be separated from 120 Vac and higher wiring.

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Customer-Supplied Remote Starter Wiring

Current Transformer and Potential Table 16. Max recommended total wire length (to and
from) for PT leads in a dual PT system
Transformer Wire Sizing
Max Wire Length Max Wire Length
For customer-supplied starter-to-chiller unit control panel Wire Primary Secondary
starter module 1A23. These wires must be separated from Gauge Feet Meters Feet Meters
120 Vac or higher wiring. 8 3061 933 711 217

Table 14. Maximum recommended wire length for 10 1924 586 447 136
secondary CT leads in dual CT system 12 1211 369 281 85
14 761 232 177 53
Maximum Wire Length Secondary CT
Wire AWG (mm2) Leads 16 478 145 111 33

Feet Meters 17 379 115 88 26

8 (10) 1362.8 415.5 18 301 91 70 21

10 (6) 856.9 261.2 20 189 57 44 13

12 (4) 538.9 164.3 21 150 45 34 10

14 (2.5) 338.9 103.3 22 119 36 27 8

Notes:
16 (1.5) 213.1 65.0
1. Wire length is for copper conductors only.
17 (1) 169.1 51.5 2. The above length is maximum round trip wire length. The maximum
distance the PT can be located from the starter module is half of the
18 (0.75) 134.1 40.9 listed value.
20 (0.5) 84.3 25.7
Notes:
1. Wire length is for copper conductors only.
2. Wire length is total one-way distance that the CT can be from the
starter module.

Table 15. Maximum recommended total wire length for

PTs in a single PT system
Wire Gauge Maximum Lead Length
Feet Meters
8 5339 1627
10 3357 1023
12 2112 643
14 1328 404
16 835 254
17 662 201
18 525 160
20 330 100
21 262 79
22 207 63
Notes:
1. Wire length is for copper conductors only.
2. The above length is maximum round trip wire length. The maximum
distance the PT can be located from the starter module is half of the
listed value.

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Power Supply Wiring

Note: Connect L1, L2, and L3 (shown below) per
WARNING starter diagram provided with chiller.

Ground Wire! L3 L2 L1 G L3 L2 L1 G L3 L2 L1 G
All field-installed wiring must be completed by
qualified personnel. All field-installed wiring must
comply with NEC and applicable local codes. Failure to
follow this instruction could result in death or serious
injuries. G G

Three-Phase Power L3 L2 L1 L3 L2 L1
Review and follow the guidelines below to properly install
and connect the power supply wiring to the starter panel:
• Verify that the starter nameplate ratings are
compatible with the power supply characteristics and
• When installing the power supply conduit, ensure that
with the electrical data on the unit nameplate.
the position of the conduit does not interfere with the
serviceability of any of the unit components, or with
NOTICE: structural members and equipment. Ensure that the
Starter Damage! conduit is long enough to simplify any servicing that
Debris inside the starter panel may cause an electrical may be necessary in the future (e.g., starter).
short. Failure to follow this instruction could result in • Electrical wire torque specifications—follow starter
equipment damage. manufacturer’s torque specifications.

Circuit Breakers and Fused

NOTICE:
Use Copper Conductors Only! Disconnects
Unit terminals are not designed to accept other types Any field supplied circuit breaker or fused disconnect
of conductors. Failure to use copper conductors could installed in power supplied to the chiller must be sized in
result in equipment damage. compliance with NEC or local guidelines.

• Do not modify or cut enclosure to provide electrical Note: Right-hand and left-hand circuits may have
access. Removable panels have been provided, and different RLAs. See unit nameplate.
any modification should be done away from the
enclosure. If the starter enclosure must be cut to Power Factor Correction
provide electrical access, exercise care to prevent
debris from falling inside the enclosure.
Capacitors (Optional)
• Use copper conductors to connect the three-phase Power factor correction capacitors (PFCCs) are designed to
power supply to the remote- or unit-mounted starter provide power factor correction for the compressor motor.
panel. PFCCs are available as an option for unit-mounted starters
• Flexible conduit connections are recommended to and remote mounted starters.
enhance serviceability and minimize vibration
transmission. Note: Verify PFCC voltage rating is greater than or equal
to the compressor voltage rating stamped on the
• Size the power supply wiring in accordance with NEC,
unit nameplate.
using the RLA value stamped on the chiller nameplate
and transformer load on L1 and L2.
• Confirm that wire size is compatible with lug size stated NOTICE:
in unit submittal. Motor Damage!
• Make sure that the incoming power wiring is properly PFCCs must be wired into the starter correctly. Failure
phased; each power supply conduit run to the starter to do so could cause misapplication of these capacitors
must carry the correct number of conductors to ensure and result in a loss of motor overload protection and
equal phase representation. subsequently cause motor damage.

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Power Supply Wiring

PFCCs must be wired one of two ways as the preceding figure. If the capacitor connection points are
shown as explained in the following (Option 1 downstream of the current transformers, route the PFCC
leads through the current transformers as shown in the
and Option 2).
following figure. This ensures that the overloads register
both line and capacitor-supplied current.
Motor starter Current
contactor transformer
Current
1 transformer
Power
circuit 2 Motor 1
3
Power
2 Motor
circuit
Fused
disconnect 3
or suitable Fused
breaker disconnect Motor starter
Fuses contactor
Enclosed or suitable
3-phase breaker
capacitor Fuses
Enclosed
unit
3-phase
capacitor
Option 1—PFCCs installed downstream of unit

starter contactor, upstream of current

transformers. Interconnecting Wiring
Typical equipment room conduit layouts with and without
WARNING unit-mounted starters are shown in Figure 31 and
Figure 32.
Hazardous Voltage w/Capacitors!
Important: The interconnecting wiring between the
Disconnect all electric power, including remote
starter panel, compressor, and control
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be panel is factory-installed with unit-mounted
inadvertently energized. For variable frequency drives starters. However, when a remote-mounted
or other energy storing components provided by Trane starter is used, the interconnecting wiring
or others, refer to the appropriate manufacturer’s must be field-installed.
literature for allowable waiting periods for discharge of Note: Refer to starter submittal drawing for location of
capacitors. Verify with an appropriate voltmeter that all
incoming wiring to the starter.
capacitors have discharged. Failure to disconnect
power and discharge capacitors before servicing could Figure 31. Typical equipment room layout for units with
result in death or serious injury. unit-mounted starter
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06A-EN 1 3

2
Simultaneously disconnect capacitors and load from line
power. If the capacitors are not switched offline when the
load is disconnected, they continue to add capacitance to
the electrical distribution system. A leading power
factor—too much capacitance—may eventually develop.
This overprotection causes poor voltage regulation (i.e.,
voltage is high when the circuit is unloaded, then drops as
loads are added).
1. Line side power conduits
Option 2—PFCC wires routed through current 2. Unit-mounted starter
3. Unit control panel
transformers.
Size motor overload protection to account for capacitor-
supplied current. Overloads are typically set to measure
the total current drawn by the motor. When PFCCs are
used, they become the source of part of that current. If the
current they provide is not registered by the overload
protectors, potentially damaging amperage can reach the
motor. The simplest way to ensure that the overloads
detect all current supplied to the motor is to position the
PFCCs upstream of the current transformers as shown in
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Power Supply Wiring

• Use field-provided, crimp-type wire terminal lugs

Figure 32. Typical equipment room layout for units with properly sized for the application.
remote-mounted starter
Note: Wire size ranges for the starter line and load-
1 side lugs are listed on the starter submittal
2 drawings supplied by the starter manufacturer
or Trane. Carefully review the submitted wire
4 lug sizes for compatibility with the conductor
sizes specified by the electrical engineer or
6
3 contractor.
7 • On 4160 V and below, a terminal clamp with a
5
3/8-in. bolt is provided on each motor terminal stud;
use the factory-supplied Belleville washers on the wire
lug connections. Figure 33 illustrates the juncture
between a motor terminal stud and terminal lug.
Figure 33. Terminal stud, clamp, and lug assembly
(4160 V and below)

1. Line side power conduits

2. Remote-mounted starter
2
3. Unit control panel
4. IPC Circuit conduit less than 30V (and CT/PT wiring for starters by
others)
Note: Must enter the low voltage Class 2 portion of the unit control
panel (1000 feet max). 1
5. Motor terminal box
6. 115V Control conduit
Note: Must enter the higher than 30 Vdc Class 1 portion of the until
3
control panel.
4
7. Lead power wiring
Notes: 5
• Refer to the unit field connection diagram for approximate unit
control panel knock out locations. 1. Belleville washer
• To prevent damage to the unit control panel components, do not 2. Terminal lugs
route control conduit into the top of the box.
3. Terminal clamp

Starter to Motor Wiring (Remote- 4.

5.
Motor terminal stud
3/8-in. bolt
Mounted Starters Only)
• Torque for this assembly is 24 ft·lb (32.5 N·m).
Ground Wire Terminal Lugs • Install but do not connect the power leads between the
Ground wire lugs are provided in the motor terminal box starter and compressor motor. (These connections will
and in the starter panel. be completed under supervision of a qualified Trane
service engineer after the pre-start inspection.)
Terminal Clamps
NOTICE:
NOTICE: Component Damage!
Ensure the power supply wiring and output to motor
Use Copper Conductors Only! wiring are connected to the proper terminals. Failure to
Unit terminals are not designed to accept other types do so will cause catastrophic failure of the starter and,
of conductors. Failure to use copper conductors could or motor.
result in equipment damage.
Bus Bars
Terminal clamps are supplied with the motor terminals to
accommodate either bus bars or standard motor terminal Bus bars and extra nuts are available as a Trane option.
wire lugs. Terminal clamps provide additional surface area Install the bus bars between the motor terminals when
to minimize the possibility of improper electrical using a low-voltage AFD that is:
connections. • across-the-line
Wire Terminal Lugs • primary reactor/resistor
• auto transformer
Wire terminal lugs must be field supplied. • customer-supplied outside the delta solid-state

48 CDHF-SVX01E-EN
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Power Supply Wiring

• customer-supplied. • When routing the IPC circuit out of the starter

Connect T1 to T6, T2 to T4, and T3 to T5. enclosure, ensure that it is at least 6 in. from all wires
carrying a higher voltage.
Note: Bus bars are not needed in medium-voltage or
high-voltage applications since only 3 terminals
are used in the motor and starter.
WARNING
When attaching starter leads to 6.6–7 kV motor terminals, Grounding Required!
the 1/2-in.–13 brass jam nuts should be tightened to a Follow proper local and state electrical code on
maximum torque of 18 to 22 ft·lb (18 to 30 N·m). Always requirements for grounding. Failure to follow code
use a second wrench to backup the assembly and prevent could result in death or serious injury.
applying excessive torque to the terminal shaft.
• The IPC wiring shield should be grounded on one end
only at control panel end.The other end should be un-
Starter to Control Panel Wiring terminated and taped back on the cable sheath to
prevent any contact between shield and ground.
The unit submittal includes the field wiring connection
diagram and the starter-to-control-panel connection • Oil Pump Interlock: All starters must provide an
diagram (showing the electrical connections required interlock (normally open) contact with the chiller oil
between the remote-mounted starter and the control pump connected to the control panel at Terminals
panel). 1A7-2-4 and 1A7-J2-2 (14 ga.) The purpose of this
interlock is to power the oil pump on the chiller in the
Note: Install separate conduit into the low voltage
event that a starter failure, such as welded contacts,
(30 volts) section of the control panel.
keeps the chiller motor running after the controller
When sizing and installing the electrical conductors for interrupts the run signal.
these circuits, follow the guidelines listed. Use 14 ga. wire
for 120V control circuits unless otherwise specified.

NOTICE:
Component Damage!
Remove all debris from inside the starter panel. Failure
to do so could result in an electrical short and could
cause serious starter component damage.

NOTICE:
Electrical Noise!
Maintain at least 6 inches between low-voltage (<30V)
and high voltage circuits. Failure to do so could result in
electrical noise that may distort the signals carried by
the low voltage wiring, including the IPC wiring.

To wire the starter to the control panel, follow the

guidelines below:
• If the starter enclosure must be cut to provide electrical
access, exercise care to prevent debris from falling
inside the enclosure. Do not cut AFD enclosure.
• Use only shielded, twisted-pair wiring for the
Interprocessor Communication (IPC) circuit between
the starter and the control panel on remote mounted
starters.
Note: Recommended wire is Beldon Type 8760,
18 AWG for runs up to 1000 feet. The polarity of
the IPC wiring is critical for proper operation.
• Separate low-voltage (less than 30V; refer to Table 12,
p. 43 and Table 13, p. 44) wiring from the 115V wiring
by running each in its own conduit.

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10kV–13.8kV Medium Voltage Installation

WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.

All electrical circuits shall be treated as energized until all

lockout-tagout procedures are in place and the circuit has
been tested to verify that it is de-energized. The medium
voltage motor terminal box cover must not be removed if
power is present, or if there is a possibility that power may
be present. Working on energized medium voltage circuits
is not an approved practice for normal HVAC maintenance
or service.

10kV–13.8kV Medium Voltage Motor Note: Dimensions in inches

The motor is suitable for remote mounted across-the-line
(including circuit breaker starting), primary reactor, • Motor terminal box cover-only weight is 55 lb (25 kg).
autotransformer, or solid-state starting. Refer to the unit • Two 7/8-in. (22 mm) lifting holes are provided in the
nameplate for motor data including RLA, LRA, etc. cover.
In all cases of non-Trane supplied starters, the Trane • Motor terminal box weight without the cover is 215 lb
Engineering Specification for UC800 Starter By Others (98 kg).
(available through your local Trane office) must be • Two 3/8-in.–16 weld nuts are provided on the top of the
followed in order to ensure proper function and protection terminal box to allow the use of properly rated lifting
of the chiller. A disconnecting means and short-circuit d-rings if removal is needed for clearance purposes.
protection must be installed ahead of the starter, unless Note: If the box is removed for installation purposes,
they are included as part of the starter. the motor terminals MUST be protected against
Note: Trane assumes no responsibility for the design, impact or stress damage. Field fabrication of a
documentation, construction, compatibility, cover or guard is required.
installation, start-up, or long term support of • The motor terminal box is large enough to
starters provided by others. accommodate the use of stress cones.
Motor Terminal Box • If conduit is applied, a flexible connection of the
conduit to the box should be made to allow for unit
A large steel motor terminal box is provided to allow for serviceability and for vibration isolation. The cable
the field connection of the motor power supply wire to the should be supported or protected against abrasion and
motor. wear on any edges or surfaces. Cable or conduit
openings can be cut at any location in the box sides,
top, or bottom for cable entry. Always ensure that
debris does not remain in the box after cutting cable
entry holes.

Motor Supply Wiring

WARNING
Grounding Required!
Follow proper local and state electrical code on
requirements for grounding. Failure to follow code
could result in death or serious injury.

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10kV–13.8kV Medium Voltage Installation

Motor circuit wire sizing by the installer must be made in chiller with the motor terminal box cover removed or with
accordance with the National Electric Code or any other any loose or missing cover bolts.
applicable codes. All wiring to the CenTraVac motor must
be shielded copper, with insulation rated to a minimum of
15kV.
Three terminals are provided on the chiller for the
connection of power to the motor from the starter. Power
leads to motors must be in multiples of three, with equal
phase representation in all conduits or wire trays. To limit
the effects of corona or ionization with cables carrying
more than 2000V, Trane requires that the power cable have
a metallic shield, unless the cable is specifically listed or
approved for non-shielded use. If the cable is shielded, the
shielding must be grounded at one end (grounding is
typically done at the starter or supply end).
Care must be taken while routing the incoming cables to
ensure that cable loads or tensions are not applied to the
terminal or premature terminal failure could result.

Motor Terminals
Field-provided, ring-type lugs, with no sharp edges or
corners, must be used by a qualified installer to connect
the power wiring to the motor terminals. Follow all
instructions provided with the field-provided lugs to
ensure proper connections.
Important: The use of stress cones is highly
recommended to reduce and control
longitudinal and radial electrical stresses at
the cable ends.
Prior to assembly the terminal stud, nuts, and lug should
be inspected and cleaned to ensure they are not damaged
or contaminated. The motor terminal has a copper shaft
that is threaded 9/16-in.–18 UNF2A. Brass nuts are
provided on the motor terminals to retain the lugs, and the
final connection should be tightened to 22–25 ft·lb (30–
34 N·m) using a 7/8-in. socket on a torque wrench.

NOTICE:
Motor Terminal Damage!
Do not apply torque to the motor terminal when
tightening lugs. Always use a second wrench to back-
up the assembly and prevent the application of torque
to the terminal shaft. Failure to follow this instruction
could cause equipment or property-only damage.

Before beginning wiring and torquing, ensure proper

motor terminal care and do not apply any excess stress.

Ground Wire Terminal Lug

A ground wire lug is provided in the motor terminal box to
allow the field connection of an earth ground. The lug will
accept a field supplied ground wire of #8 to #2 AWG size.
After completing the field connection of wiring, inspect
and clean the motor terminals and motor housing, and
remove any debris before reinstalling the motor terminal
box cover. The cover must be re-installed onto the motor
terminal box and all bolts installed. Do not operate the

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System Control Circuit Wiring (Field Wiring)

Table 17. Unit control panel wiring 120 Vac
Standard Control Circuits: Unit
Control Panel Control Wiring
(120 Vac) Unit Control Terminations Input or Output Type Contacts
Chilled Water Flow Proving Input(a) 1X1-5 to 1A6-J3-2 Binary Input Normally Open, closure
with flow
Condenser Water Flow Proving Input(b) 1X1-6 to 1A6-J2-2 Binary Input Normally Open, closure
with flow
Chilled Water Pump Relay Output 1A5-J2-4 to 6 Binary Output Normally Open
Condenser Water Pump Relay Output 1A5-J2-1 to 3 Binary Output Normally Open

Optional Control Circuits Note: Defaults are factory programmed, alternates can be selected at start-up using the service tool.
(120 Vac)
Alarm Relay MAR (Non-Latching) Output 1A8-J2-1 to 3 Binary Output Normally Open
Limit Warning Relay Output 1A8-J2-4 to 6 Binary Output Normally Open
Alarm Relay MMR (Latching) Output 1A8-J2-7 to 9 Binary Output Normally Open
Compressor Running Relay Output 1A8-J2-10 to 12 Binary Output Normally Open
Maximum Capacity Relay Output 1A9-J2-1 to 3 Binary Output Normally Open
Head Relief Request Relay Output 1A9-J2-4 to 6 Binary Output Normally Open
Circuit 2 Purge Alarm Relay Output 1A9-J2-7 to 9 Binary Output Normally Open
Circuit 1 Purge Alarm Relay Output 1A9-J2-10 to 12
Ice Making Relay Output 1A5-J2-10 to 12 Binary Output Normally Open
Alternates
Circuit 1 Running
Circuit 2 Running
Chiller Alarm
Circuit 1 Alarm
Circuit 3 Alarm
Purge Alarm

Standard Low Voltage Circuits Unit Control Panel Input or Output Type Contacts
(less than 30 Vac)(c) Terminations
External Auto Stop Input 1A13-J2-1 to 2 Binary Input Closure required for
normal operation
Emergency Stop Input 1A13-J2-3 to 4 Binary Input Closure required for
normal operation
Closure required for
Circuit 1 External Lockout 1A25-J2-1 to 2 Binary Input
normal operation
Closure required for
Circuit 2 External Lockout 1A25-J2-3 to 4 Binary Input
normal operation

Optional Low Voltage Circuits

External Base Loading Enable Input 1A18-J2-1 to 2 Binary Input Normally Open
External Hot Water Control Enable Input 1A18-J2-3 to 4 Binary Input Normally Open
External Ice Machine Control Enable Input 1A19-J2-1 to 2 Binary Input Normally Open
% RLA Compressor Output (Circuit 1 Left 1A15-J2-1 to 3 Left Panel Analog Output 2–10 Vdc
Panel 1A15)
External Condenser Pressure Output (Circuit 1A15-J2-4 to 6 Left Panel Analog Output 2–10 Vdc
1 Left Panel 1A15)
Evaporator/Condenser Differential Pressure 1A15-J2-4 to 6 Left Panel Analog Output 2–10 Vdc
Output (Circuit 1 Left Panel 1A15)
Condenser Head Pressure Control (Circuit 1 1A15-J2-4 to 6 Left Panel Analog Output 2–10 Vdc
Left Panel 1A15)
External Current Limit Setpoint Input 1A16-J2-2 to 3 Analog Input 2–10 Vdc, or 4–20 mA
External Chilled Water Setpoint Input 1A16-J2-5 to 6 Analog Input 2–10 Vdc, or 4–20 mA
External Base Loading Setpoint Input 1A17-J2-2 to 3 Analog Input 2–10 Vdc, or 4–20 mA

52 CDHF-SVX01E-EN
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System Control Circuit Wiring (Field Wiring)

Table 17. Unit control panel wiring 120 Vac (continued)

Generic Refrigerant Monitor input 1A17-J2-5 to 6 Analog Input 2–10 Vdc, or 4–20 mA
Outdoor Air Temperature sensor IPC bus Connection and sensor Communication and sensor
Tracer Comm Interface or LonTalk 1A14 1A14-J2-1(+) to 2(-) Communication to Tracer (as ordered, see sales
Note: Comm 4 required two modules, one is 1A14-J2-3(+) to 4(-) or LonTalk order)
mounted in each panel. Left Panel
BACnet or MODBUS 1A22, 65(+) to 6(-) Communication to BACnet or (as ordered, see sales
MODBUS order)
1A14-J2-1(+) to 2(-)
Tracer Comm 5 interface (future, one Comm
1A14-J2-3(+) to 4(-) Communication to Tracer
5 module left panel only)
Left Panel only
Right Hand Control Panel
Optional Low Voltage Circuits
% RLA Compressor 2 Output (Circuit 2 Right
1A15-J2-1 to 3 Right Panel Analog Output 2–10 Vdc
Panel 1A15)
External Condenser Pressure Output (Circuit
1A15-J2-5 to 6 Right Panel Analog Output 2–10 Vdc
2 Right Panel 1A15)
Tracer Comm 4 interface 1A14 1A14-J2-1(+) to 2(-)
Note: Comm 4 requires two modules; one in 1A14-J2-3(+) to 4(-) Communication to Tracer
each panel Right panel
Note: All wiring to be in accordance with National Electrical Codes and any local codes
(a) If the Chilled Water Flow Proving Input is a factory-installed ifm efector flow-sensing device, the secondary field device (recommended with 38°F and
lower leaving chilled water temperatures) for proof of flow connects from 1X1-5 to 1K26-4 (binary input; normally open, closure with flow). Remove
factory jumper when used.
(b) If the Condenser Water Flow Proving Input is a factory-installed ifm efector flow-sensing device, the secondary (optional) field device for proof of flow
connects from 1X1-5 to 1K27-4 (binary input; normally open, closure with flow). Remove factory jumper when used.
(c) Standard low-voltage circuits (less than 30 Vac) must be separated from 120 Vac or higher wiring.

Water Pump Interlock Circuits and Flow required before the start sequence will be allowed to
Switch Input proceed and a loss of evaporator water flow proof during
chiller operation will result in a chiller shut-down.
Refer to as-built schematics on the inside of the control
WARNING panel for field wiring. This is a dry binary input; normally-
Hazardous Voltage! open, closure for flow. Apply no external power.
Disconnect all electric power, including remote 1. With factory-installed ifm efector flow-sensing
disconnects before servicing. Follow proper lockout/ devices, a field-provided secondary flow-sensing
tagout procedures to ensure the power can not be device is recommended with applications having 38°F
inadvertently energized. Failure to disconnect power (3.33°C) and below leaving evaporator water
before servicing could result in death or serious injury. temperatures. When a secondary flow-sensing device
is used, remove the factory jumper and install its
Note: The circuits for the chilled water proof of flow and contacts between 1X1-5 to 1K26-4; this places the
the condenser water proof of flow do NOT require secondary flow sensing device in series with the
external power. Refer to the wiring diagrams that ifm efector.
shipped with the chiller.
2. For field provided primary proof of flow devices,
Chilled water pump connect the primary proof of flow device between
terminals 1X1-5 to 1A6-J3-2 (left panel only). A
1. Wire the evaporator water pump contactor (5K1) to a
secondary field device is recommended with
separate 120 volt single phase power supply with
applications having 38°F (3.33°C) and below leaving
14 AWG, 600 volt copper wire.
evaporator water temperatures, and must be field-
2. Connect circuit to 1A5-J2-6. wired in series with the primary proof of flow device.
3. Use 1A5-J2-4 120 Vac output to allow the control panel
Condenser water pump
to control the evaporator water pump, or wire the 5K1
contactor to operate remotely and independently of 1. Wire the condenser water pump contactor (5K2) to a
the control panel (left panel only). separate 120-volt, single phase power supply with
14 AWG, 600-volt copper wire.
Chilled water proof of flow
2. Connect circuit to control panel terminals 1A5-J2-3.
When this circuit is installed properly and the evaporator
3. Use 1A5-J2-1 120 Vac output to allow the control panel
pump is running and providing the required minimum
to control the condenser pump (left panel only).
flow, this circuit will prove the evaporator water flow for
the chiller controls. Proof of evaporator water flow is

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System Control Circuit Wiring (Field Wiring)

Condenser water proof of flow control panel four-wire bus using the Trane-approved
connectors provided.
When this circuit is installed properly and the condenser
pump is running and providing the required minimum The sensor will be configured (given its identity and
condenser water flow, this circuit will prove the condenser become functional) at start-up when the Trane service
water flow for the chiller controls. Proof of condenser technician performs the start-up configuration. It will NOT
water flow is also required for the start sequence will be be operational until that time.
allowed to proceed and a loss of condenser water flow Note: If shielded cable is used to extend the sensor leads,
proof during chiller operation will result in a chiller shut- be sure to tape off the shield wire at the junction
down. box and ground it at the control panel. If the added
Refer to as-built schematics on the inside of the control length is run in conduit, do not run them in the
panel for field wiring. This is a dry binary input; normally- same conduit with other circuits carrying 30 or
open, closure for flow. Apply no external power. more volts.
1. With factory-installed ifm efector flow-sensing
devices, a secondary field-provided flow-sensing NOTICE:
device is optional. When a secondary flow-sensing Electrical Noise!
device is used, remove the factory jumper, and install Maintain at least 6 inches between low-voltage (<30V)
its contacts between 1X1-5 to 1K27-4; this places the and high voltage circuits. Failure to do so could result in
secondary flow sensing device in series with the electrical noise that may distort the signals carried by
ifm efector. the low-voltage wiring, including the IPC.
2. For field-provided primary proof of flow devices,
connect the primary proof of flow device between Optional Control and Output Circuits
terminals 1X1-6 to 1A6-J2-2 (left panel only). The Install various optional wiring as required by the owner’s
secondary field provided flow sensing device is specifications (see Table 17, p. 52).
optional; however, when it is present, it must be field-
wired in series with the primary proof of flow device. Optional Tracer Communication Interface
This control option allows the control panel to exchange
Temperature Sensor Circuits information—such as chiller status and operating set
points—with a Tracer system.
All temperature sensors are factory installed except the
optional outdoor air temperature sensor. This sensor is Note: The circuit must be run in separate conduit to
required for the outdoor air temperature type of chilled prevent electrical noise interference.
water reset. Use the following guidelines to locate and Additional information about the Tracer Communication
mount the outdoor air temperature sensor. Mount the interface option is published in the installation and
sensor probe where needed, however, mount the sensor operation guide that ships with the Tracer.
module in the control panel.
Note: Comm 4 will require Tracer to be connected to each
CWR—Outdoor Option panel for individual circuit information. (Comm 5
will require connections to the left panel only when
The outdoor temperature sensor is similar to the unit-
available.
mounted temperature sensors in that it consists of the
sensor probe and the module. A four-wire IPC bus is
connected to the module for 24 Vdc power and the Unit Start-up/Commissioning
communications link. Trane recommends mounting the
Important: Start-up must be performed by Trane or an
sensor module within the control panel and the sensor two
agent of Trane specifically authorized to
wire leads be extended and routed to the outdoor
perform start-up and warranty of Trane®
temperature sensor probe sensing location. This ensures
products. Contractor shall provide Trane (or
the four-wire IPC bus protection and provides access to the
an agent of Trane specifically authorized to
module for configuration at start-up.
perform start-up) with notice of the
The sensor probe lead wire between the sensor probe and scheduled start-up at least two weeks prior
the module can be separated by cutting the two-wire to the scheduled start-up.
probe lead leaving equal lengths of wire on each device:
the sensor probe and the sensor module.
Starter Module Configuration
Note: This sensor and module are matched and must
remain together or inaccuracy may occur. The starter module configuration settings will be checked
(and configured for Remote Starters) during start-up
These wires can then be spliced with two 14–18 AWG 600V
commissioning.
wires of sufficient length to reach the desired outdoor
location with a maximum length 1000 feet (305 meters). Note: To configure starter modules, and perform other
The module four-wire bus must be connected to the starter checks, it is recommended that the line
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System Control Circuit Wiring (Field Wiring)

voltage three-phase power be turned off and

secured (locked out), and then that a separate
source control power (115 Vac) be utilized to power
up the control circuits.This needs to be done in
each panel.
Use the as-built starter schematic to ensure correct fuse
and terminals. Verify that the correct fuse is removed and
that the control circuit connections are correct; then apply
the 115 Vac separate source power to service the controls.

Schematic Wiring Drawings

Please refer to the submittals and drawings that shipped
with the unit. Additional wiring drawings for CenTraVac
chillers are available from your local Trane office.

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Operating Principles
General Requirements respectively. All remaining liquid refrigerant flows
through another orifice plate to the evaporator.
Operation and maintenance information for CDHF and
Figure 34. Pressure enthalpy curve, 3-stage
CDHG chillers are covered in this section. This includes
both 50 and 60 Hz centrifugal chillers equipped with the
Tracer AdaptiView UC800 control system. This
information pertains to all chiller types unless differences
exist, in which case the sections are listed by chiller type as
applicable and described separately. By carefully condenser
6 5
P4

Pressure (PSI)
reviewing this information and following the instructions compressor
given, the owner or operator can successfully operate and 7 high side economizer
P3 4 3rd stage)
maintain a CenTraVac unit. If mechanical problems do
occur, however, contact a Trane service technician to P2 8 low side economizer 3 compressor
(2nd stage)
ensure proper diagnosis and repair of the unit. evaporator 2 compressor
P1 1 (1st stage)
Cooling Cycle
Duplex chillers have two refrigerant circuits that operate
as their own independent circuits. These circuits are
discussed as individual chiller refrigeration units in the Figure 35. Refrigerant flow, 3-stage
following discussion. The sequence of operation of the
two refrigeration circuits is discussed in a later section.
When in the cooling mode, liquid refrigerant is distributed
along the length of the evaporator and sprayed through
small holes in a distributor (i.e., running the entire length
of the shell) to uniformly coat each evaporator tube. Here,
the liquid refrigerant absorbs enough heat from the
system water circulating through the evaporator tubes to
vaporize. The gaseous refrigerant is then drawn through
the eliminators (which remove droplets of liquid
refrigerant from the gas) and the first stage variable inlet
guide vanes, and into the first stage impeller.
CDHF 2-Stage Compressor 1 or 2
CDHG 3-Stage Compressor 1 or 2 Compressed gas from the first-stage impeller is
Compressed gas from the first-stage impeller flows discharged through the second-stage variable guide
through the fixed, second-stage inlet vanes and into the vanes and into the second-stage impeller. Here, the
second-stage impeller. Here, the refrigerant gas is again refrigerant gas is again compressed, and then discharged
compressed, and then discharged through the third-stage into the condenser. Baffles within the condenser shell
variable guide vanes and into the third-stage impeller. distribute the compressed refrigerant gas evenly across
Once the gas is compressed a third time, it is discharged the condenser tube bundle. Cooling tower water,
into the condenser. Baffles within the condenser shell circulated through the condenser tubes, absorbs heat
distribute the compressed refrigerant gas evenly across from the refrigerant, causing it to condense. The liquid
the condenser tube bundle. Cooling tower water circulated refrigerant then flows out of the bottom of the condenser,
through the condenser tubes absorbs heat from the passing through an orifice plate and into the economizer.
refrigerant, causing it to condense. The liquid refrigerant The economizer reduces the energy requirements of the
then passes through an orifice plate and into the refrigerant cycle by eliminating the need to pass all
economizer. gaseous refrigerant through both stages of compression
The economizer reduces the energy requirements of the (see Figure 36). Notice that some of the liquid refrigerant
refrigerant cycle by eliminating the need to pass all flashes to a gas because of the pressure drop created by
gaseous refrigerant through three stages of compression the orifice plate, thus further cooling the liquid refrigerant.
(see Figure 35, p. 56). Notice that some of the liquid This flash gas is then drawn directly from the economizer
refrigerant flashes to a gas because of the pressure drop into the second-stage impellers of the compressor. All
created by the orifice plates, thus further cooling the liquid remaining liquid refrigerant flows out of the economizer,
refrigerant. This flash gas is then drawn directly from the passes through another orifice plate and into the
first and second stages of the economizer into the third- evaporator.
and second-stage impellers of the compressor,

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Operating Principles

Figure 36. Refrigerant flow, 2-stage Figure 37. Duplex sequence of operation: lead 1 / lag 2

Auto

Evap LWT Evap LWT

Falls Below Rises Above
Differential to Differential to
Stop Start

Running
(Circuit 1)

Chiller Capacity Compressor A

Less than 30% Capacity Greater
(No Time Delay) than 80%

Duplex Compressor Sequencing Running

(No Time Delay)

(Circuit
Four methods (two fixed sequence methods, a balanced 1 and 2)
start and hour’s method, and a no staging method) are
provided for order of a compressor sequencing on CTV
Duplex chillers. The desired method is selectable at
Fixed Sequence—Compressor 2/
startup via the service tool. The application can decide to Compressor 1
either balance the wear burden among the unit’s If the chiller is in the Auto mode and all interlocks have
compressors, to start the most efficient compressor, or to been satisfied, Compressor 2 will be started based on the
simultaneously start and stop both compressors to leaving water temperature rising above the “Differential to
minimize startup pull down time. Each method has specific Start” setting. Compressor 1 will stage on when the
applications were it can be used advantageously. If one overall chiller average capacity exceeds stage on load
compressor is locked out, in restart inhibit, or generally not point for 30 seconds. The stage on load point is adjustable
ready to start, the available compressor will be started. up to 50 percent.
Note: The following description assumes Compressor 1 The default is 40 percent which means that a single
is the down stream compressor. compressor would have to load to 80 percent (the average
would be 40 percent) before the second compressor
Fixed Sequence—Compressor 1/ starts. Both compressors will run until chiller average
Compressor 2 (Default Mode) capacity drops below stage off load point for 30 seconds.
If the chiller is in the Auto mode and all interlocks have The stage off load point is also adjustable. Compressor 1
been satisfied, Compressor 1 will be started based on the will be shut down and Compressor 2 will run until water
leaving water temperature rising above the “Differential to temperature drops below the differential to stop. Before
Start” setting. Compressor 2 will stage on when the shutting down, Compressor 1 will be unloaded and
overall chiller average capacity exceeds stage on load Compressor 2 will be loaded to maintain the same
point for 30 seconds. The stage on load point is adjustable average capacity command. If chilled water reset is used,
(via service tool) up to 50 percent. the upstream compressor usually will be the most efficient
compressor to operate at part load. If the leaving water
The default is 40 percent which means that a single temperature is reset and the chiller only needs one
compressor would have to load to 80 percent (the average compressor, then the upstream compressor would be
would be 40 percent) before the second compressor running closer to its selection point and will be the most
starts. Both compressors will run until chiller average efficient compressor to operate.
capacity drops below stage off load point for 30 seconds.
The stage off load point is also adjustable (via service tool)
(default = 30 percent, range from 0 to 50 percent).
Compressor 2 will be shut down and Compressor 1 will
run until water temperature drops below the differential to
stop. Before shutting down, Compressor 2 will be
unloaded and Compressor 1 will be loaded to maintain the
same average capacity command. When running chilled
water temperature at selected conditions, the downstream
compressor usually will be the most efficient compressor
to operate at part load because compressors on Duplex
chillers are not sized exactly the same.

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Operating Principles

the chiller as if there were only one compressor. If the

Figure 38. Duplex sequence of operation: lead 2/ lag 1 chiller is in the Auto mode and all interlocks have been
satisfied, Compressor 1 will be started based on the
Auto leaving water temperature rising above the “Differential to
Start” setting. When Compressor 1 is at speed,
Evap LWT Rises
Compressor 2 will start. Both compressors will run until
Evap LWT
Falls Below
Above Diff to Start water temperature falls below the differential to stop, at
(Start Cprsr with
Differential to Fewest Starts and that time both compressors will be shut down.
Stop Hours)

Running Figure 40. Duplex sequence of operation: combined

(Circuit 2) start
Chiller Capacity Single Comp
Less than 30%
(De-Energize
Capacity Greater Auto
than 80% (No
Cprsr with Most Time Delay)
Starts and Hours)
Running Evap LWT
Evap LWT
(Circuit Rises Above
Falls Below
1 and 2) Differential to
Differential to
Start
Stop
Running
Sequencing—Balanced Starts and Hours (Circuit 1)

When desired to balance the wear between the Confirm Comp A

compressors. This method will extend the time between Start, then
Immediately
maintenance on the lead compressor. When balanced Start Comp B

starts and hours is selected, the compressor with the Running

fewest starts will start. If that compressor is unavailable to (Circuit
1 and 2)
start due to a circuit lockout (including restart inhibit) or a
circuit diagnostic, then the other compressor will be
started. The second compressor will stage on when chiller Compressor Load Balancing
capacity exceeds the stage on load point for 30 seconds. Duplex chillers with Tracer AdaptiView UC800 control will
When chiller capacity falls below stage off load point for balance the compressor load by giving each compressor
30 seconds, the compressor with the most hours will be the same load command. The load command will be
shut off. converted to IGV position that will be the same on each
Figure 39. Duplex sequence of operation: equalize compressor. Balancing compressor load results in the best
starts and hours overall efficiency and with both circuits operating with
nearly the same refrigerant pressures. When both
compressors are running the overall chiller load command
Auto will be split evenly between the two compressors unless
limit control overrides balancing. When transitioning
Evap LWT Evap LWT
between one compressor operation and two compressor
Falls Below Rises Above operation, the load commands will be actively balanced at
Differential to Differential to
Stop Stop a rate slow enough to minimize capacity control
Running disturbances.
(Single
Circuit) Restart Inhibit. The purpose of restart inhibit feature is
to provide short cycling protection for the motor and
Chiller Capacity Compressor A
Less than 30% Capacity Greater
starter. The operation of the restart inhibit function is
(No Time Delay) than 80% dependent upon two setpoints.
(No Time Delay)
Running
(Both Restart Inhibit Free Starts. The Restart Inhibit Free
Circuits) Starts (1–5, 3 default) is adjustable via the service tool and
will allow a number of rapid restarts equal to its value. If
the number of free starts is set to “1”, this will allow only
one start within the time period set by the Start to Start
Simultaneous Compressor Start/Stop
Time Setting. The next start will be allowed only after the
Both compressors will start in close succession to start to start timer has expired. If the number of free starts
minimize the time it takes for the chiller to reach full load. is programmed to “3”, the control will allow three starts in
Some process applications need the chiller to start and rapid succession, but thereafter, it would hold off on a
generate capacity as fast as possible. This method will compressor start until the Start to Start timer expired.
start both compressors, slightly staggered to prevent
doubling of the current inrush, but will generally control Restart Inhibit Start to Start Time Setting. The
Restart Inhibit Start to Start Timer (10–30 min, 20 default)
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Operating Principles

is adjustable via the service tool and defines the shortest

chiller cycle period possible after the free starts have been
used. If the number of free starts is programmed to “1”, and
the Start to Start Time Setting is programmed to
20 minutes, then the compressor will be allowed one start
every 20 minutes. The start-to-start time is the time from
when the motor was commanded to energize to when the
next command to enter prestart is given.
Clear Restart Inhibit. A Clear Restart Inhibit “button” is
provided within Manual Override in Settings on the Tracer
AdaptiView display. This provides a way for an operator to
allow a compressor start when there is a currently active
Restart Inhibit that is prohibiting such a start. The “button”
press will have no other function than to remove the
restart inhibit if there is one active. It does not change the
count of any internal restart inhibit timers or
accumulators. The restart inhibit function, setpoints and
clear features exist for each compressor and operate
independently of other compressors on that chiller. During
the time the start is inhibited due to the start-to-start timer,
the Tracer AdaptiView shall display the mode “Restart
Inhibit” and the also display the time remaining in the
restart inhibit. A “Restart Inhibit Invoked” warning
diagnostic will exist when the attempted restart of a
compressor is inhibited.

Oil and Refrigerant Pump

Compressor Lubrication System
A schematic diagram of the compressor lubrication
system is illustrated in Figure 41, p. 60. (This can be
applied to circuit 1 or 2.) Oil is pumped from the oil tank (by
a pump and motor located within the tank) through an oil
pressure regulating valve designed to maintain a net oil
pressure of 18 to 22 psid. It is then filtered and sent to the
oil cooler located in the economizer and on to the
compressor motor bearings. From the bearings, the oil
drains back to the manifold and separator under the motor
and then on to the oil tank.

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Operating Principles

Figure 41. Oil refrigerant pump (Circuit 1 or Circuit 2)

Compressor lubrication system

Motor cooling system
Oil reclaim system
1 15
2
3
14

4
20

16
7
13

12
21
11 19
18
8
17

9 10

1. Motor coolant return to condenser (2.125 OD) 12. Economizer

2. Oil tank vent to evaporator 13. Oil supply to bearings (0.625 OD)
3. Oil separator and tank vent manifold 14. Purge
4. Tank vent line 15. Compressor
5. Condenser 16. Liquid refrigerant motor coolant supply
(1.125 OD)
6. High pressure condenser gas to drive oil reclaim 17. Liquid refrigerant to economizer
eductors (0.375 OD)
7. Oil return to tank 18. Liquid refrigerant to evaporator
8. Oil tank 19. Evaporator
9. Oil cooler within economizer (0.625 OD coiled tubing) 20. Oil reclaim from suction cover (1st eductor)
(0.25 OD)
10. Oil reclaim from evaporator (2nd eductor) (0.25 OD) 21. Motor coolant filter
11. Liquid refrigerant to pump (1.625 OD)

To ensure proper lubrication and prevent refrigerant from

WARNING condensing in the oil tank, a 750-watt heater is in a well in
the oil tank. The heater is used to warm the oil while the
Surface Temperatures! unit is off. With the default settings, the oil heater is de-
MAY EXCEED 150°F. Use caution while working on energized when the unit starts. The heater energizes as
certain areas of the unit, failure to do so could result in needed to maintain 140°F to 145°F (60°C to 63°C) when the
death or serious injury. chiller is not running.

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Operating Principles

When the chiller is operating, the temperature of the oil

tank is typically 100°F to 160°F (38°C to 72°C). The oil return
lines from the thrust and journal bearings, transport oil
and some seal leakage refrigerant. The oil return lines are
routed into a manifold and separator under the motor. Gas
flow exits the top of the manifold and is vented to the
evaporator. Oil exits the bottom of the manifold and
returns to the tank. Separation of the seal leakage gas in
the separator keeps this gas out of the tank.
A dual eductor system is used to reclaim oil from the
suction cover and the evaporator, and deposit it back into
the oil tank. These eductors use high-pressure condenser
gas to draw the oil from the suction cover and evaporator
to the eductors and then discharged into the oil tank. The
evaporator eductor line has a shut-off valve mounted by
the evaporator. The shut-off valve ships closed but may be
opened up to two turns, if necessary for oil return; it should
never be opened more than two turns.
Liquid refrigerant is used to cool the oil supply to both the
thrust bearing and journal bearings. On refrigerant pump
units the oil cooler is located inside the economizer and
uses refrigerant passing from the condenser to evaporator
to cool the oil. Oil leaves the oil cooler and flows to both
the thrust and journal bearings.

Motor Cooling System

Compressor motors are cooled with liquid refrigerant (see
Figure 41, p. 60). The refrigerant pump is located on the
front of the oil tank (motor inside the oil tank). The
refrigerant pump inlet is connected to the well at the
bottom of the condenser. The connection is on the side
where a weir ensures a preferential supply of liquid
refrigerant. Refrigerant is delivered to the motor via the
pump. An in-line filter is installed (replace the in-line filter
only with major service). Motor refrigerant drain lines are
routed to the condenser.

Tracer AdaptiView Display

Information is tailored to operators, service technicians,
and owners.
When operating a chiller, there is specific information you
need on a day-to-day basis—setpoints, limits, diagnostic
information, and reports.
Day-to-day operational information is presented at the
display. Logically organized groups of information—
chiller modes of operation, active diagnostics, settings
and reports put information conveniently at your
fingertips. For more information, refer to Tracer
AdaptiView™ Display for Water-Cooled CenTraVac™
Chillers Operations Guide (CTV-SVU01D-EN, or the most
recent version).

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Start-up and Shut-down

This section will provide basic information on chiller Descriptions
operation for common events. With microelectronic
• The time line indicates the upper level operating mode,
controls, ladder diagrams cannot show today’s complex
as it would be viewed on Tracer AdaptiView.
logic, as the control functions are much more involved
than older pneumatic or solid state controls. • The shading color of the cylinder indicates the
software state.
Sequence of Operation • Text in parentheses indicates sub-mode text as viewed
on Tracer AdaptiView.
Adaptive control algorithms can also complicate the exact
• Text above the time line cylinder is used to illustrate
sequence of operation. This section illustrates common
inputs to the Main Processor. This may include User
control sequences.
input to the Tracer AdaptiView Touch screen, Control
Software Operation Overview Diagram inputs from sensors, or Control Inputs from a Generic
BAS.
Figure 42 is a diagram of the five possible software states.
• Boxes indicate Control actions such as Turning on
This diagram can be thought of as a state chart, with the
Relays, or moving the Inlet Guide Vanes.
arrows, and arrow text, depicting the transitions between
states. • Smaller cylinders indicate diagnostic checks, text
indicates time based functions, solid double arrows
Descriptions indicate fixed timers, and dashed double arrows
• The text in the circles are the internal software indicate variable timers.
designations for each state.
Start-up Sequence of Operation—
• The first line of text in the circles are the visible top
Wye-Delta
level operating modes that can be displayed on Tracer
AdaptiView. Logic Circuits within the various modules will determine
• The shading of each software state circle corresponds the starting, running, and stopping operation of the chiller.
to the shading on the time lines that show the state that When operation of the chiller is required the chiller mode
the chiller is in. is set at “Auto.” Using customer supplied power, the chilled
water pump relay is energized and chilled water flow must
Figure 42. Software operation overview be verified within 4 minutes and 15 seconds. The main
processors logic decides to start the chiller based on the
differential to start setpoint. With the differential to start
criteria met, the module then energizes condenser water
pump relay with customer supplied power (see Figure 43,
p. 63).
Based on the Restart Inhibit function and the Differential to
Start setpoint, the oil and refrigerant pump is energized.
The oil pressure must be at least 9 psid for 60 continuous
seconds and condenser water flow verified within
4 minutes and 15 seconds for the compressor start
sequence to be initiated.
The compressor motor starts in the “Wye” configuration
and then, after the compressor motor has accelerated and
the maximum phase current has dropped below
85 percent of the chiller nameplate RLA for 1.5 seconds,
the starter transitions to the “Delta” configuration is
initiated.
There are five generic states that the software can be in:
• Power Up
• Stopped
• Starting
• Running
• Stopping

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Start-up and Shut-down

Figure 43. Sequence of operation: power up to starting

Now that the compressor motor is running in the “Delta” 1. The inlet guide vanes are driven closed (up to
configuration, the inlet guide vanes will modulate, 50 seconds).
opening and closing to the chiller load variation by 2. After the inlet guide vanes are closed, the stop relay
operation of the stepper vane motor actuator to satisfy and the condenser water pump relays open to turn off.
chilled water setpoint. The chiller continues to run in its The oil and refrigerant pump motor will continue to run
appropriate mode of operation: Normal, Softload, Limit for 3 minutes post-lube while the compressor coasts to
Mode, and so on (see Figure 44). a stop. The chilled water pump will continue to run
Note: For more information, refer to “Duplex while the main processor module monitors leaving
Compressor Sequencing,” p. 57. chilled water temperature preparing for the next
If the chilled water temperature drops below the chilled compressor motor start based on the “differential to
water set point by an amount set as the “differential to start” setpoint.
stop” setpoint, a normal chiller stop sequence is initiated Figure 45, p. 64 illustrates this sequence.
as follows:
Figure 44. Sequence of operation: running

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Start-up and Shut-down

Figure 45. Sequence of operation: satisfied setpoint

If the STOP key is pressed on the operator interface, the If the “Immediate Stop” is initiated, a panic stop occurs
chiller will follow the same stop sequence as above except which follows the same stop sequence as pressing the
the chilled water pump relay will also open and stop the STOP key once except the inlet guide vanes are not
chilled water pump after the chilled water pump delay sequence closed and the compressor motor is
timer has timed out after compressor shut down (see immediately turned off.
Figure 46).
Figure 46. Sequence of operation: normal shut-down to stopped and run inhibit

Power Up Diagram Ice Machine Control

Figure 43, p. 63 illustrates Tracer AdaptiView during a
The control panel provides a service level Enable or
power up of the main processor. This process takes from
Disable menu entry for the Ice Building feature when the
30 to 50 seconds depending on the number of installed
Ice Building option is installed. Ice Building can be entered
Options. On all power ups, the software model always will
from Front Panel, or if hardware is specified the control
transition through the Stopped software state
panel will accept either an isolated contact closure 1A19
independent of the last mode. If the last mode before
Terminals J2-1 and J2-2 (Ground)) or a remote
power down was Auto, the transition from Stopped to
communicated input (BAS) to initiate the ice building
Starting occurs, but it is not apparent to the user.
mode where the unit runs fully loaded at all times. Ice
building will be terminated either by opening the contact
or based on entering evaporator fluid temperature. The
control panel will not permit the Ice Building mode to be
entered again until the unit is switched to the non-ice

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Start-up and Shut-down

building mode and back into the ice building mode. It is not setpoints less than the maximum will be ignored. Ice
acceptable to reset the chilled water setpoint low to Building can be terminated by one of the following means:
achieve a fully loaded compressor. When entering ice • Front panel disable.
building, the compressor will be loaded at its maximum • Opening the external Ice. Contacts/ Remote
rate and when leaving ice building the compressor will be communicated input (BAS).
unloaded at its maximum rate. While loading and • Satisfying an evaporator entering fluid temperature
unloading the compressor, all surge detection will be setpoint. (Default is 27°F)
ignored. While in the ice building mode, current limit • Surging for 7 minutes at full open IGV.

Figure 47. Sequence of operation: ice making: running to ice making

Figure 48. Sequence of operation: ice making: stopped to ice to ice building complete

Hot Water Control temperature and the chiller capacity is modulated to

maintain the hot water setpoint. Heating is the primary
Occasionally CTV chillers are selected to provide heating mission and cooling is a waste product or is a secondary
as a primary mission. With hot water temperature control, mission. This type of operation requires an endless source
the chiller can be used as a heating source or cooling of evaporator load (heat), such as well or lake water. The
source. This feature provides greater application chiller has only one condenser.
flexibility. In this case the operator selects a hot water
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Start-up and Shut-down

Note: Hot water temperature control mode does not

convert the chiller to a heat pump. Heat pump
Control Panel Devices and Unit-
refers to the capability to change from a cooling- Mounted Devices
driven application to a heating-driven application
by changing the refrigerant path on the chiller. This Unit Control Panel
is impractical for centrifugal chillers as it would be
much easier to switch over the water side. Safety and operating controls are housed in the unit
control panel, the starter panel, and the purge control
This is NOT heat recovery. Although this feature could be panel. The control panel operator interface and main
used to recover heat in some form, a heat recovery unit has processor is called Tracer AdaptiView and is located on an
a second heat exchanger on the condenser side. adjustable arm connected to the base of the control panel.
The Tracer AdaptiView Main Processor provides the hot For more information about operating Tracer AdaptiView,
water temperature control mode as standard. The leaving refer to Tracer AdaptiView™ Display for Water-Cooled
condenser water temperature is controlled to a hot water CenTraVac™ Chillers Operations Guide (CTV-SVU01D-EN,
setpoint between 80°F and 140°F (26.7 to 60°C) The leaving or the most recent version).
evaporator water temperature is left to drift to satisfy the The control panel houses several other controls modules
heating load of the condenser. In this application the called panel mounted LLID (Low Level Intelligent Device),
evaporator is normally piped into a lake, well, or other power supply, terminal block, fuse, circuit breakers, and
source of constant temperature water for the purpose of transformer. The IPC (Interprocessor communication) bus
extracting heat. In hot water temperature control mode all allows the communications between LLIDs and the main
the limit modes and diagnostics operate as in normal processor. Unit mounted devices are called frame
cooling with one exception; the leaving condenser water mounted LLIDs and can be temperature sensors or
temperature sensor is an MMR diagnostic when in hot pressure transducers. These and other functional switches
water temperature control mode. (It is an informational provide analog and binary inputs to the control system.
warning in the normal cooling mode.)
In the hot water temperature control mode the differential- User-Defined Language Support
to-start and differential-to-stop setpoints are used with Tracer AdaptiView is capable of displaying English text or
respect to the hot water setpoint instead of with the chilled any of twenty-four other languages. Switching languages
water setpoint. The control panel provides a separate is simply accomplished from a language settings menu.
entry at the Tracer AdaptiView to set the hot water
setpoint. Tracer AdaptiView is also able to set the hot water
setpoint. In the hot water mode the external chilled water
Unit Start-up and Shut-down
setpoint is the external hot water setpoint; that is, a single Procedures
analog input is shared at the 1A16-J2-5 to 6 (ground).
An external binary input to select external hot water
control mode is on the EXOP OPTIONAL module 1A18 WARNING
terminals J2-3 to J2-4 (ground). Tracer AdaptiView also Live Electrical Components!
has a binary input to select chilled water control or hot
water temperature control. There is no additional leaving During installation, testing, servicing and
troubleshooting of this product, it may be necessary to
hot water temperature cutout; the HPC and condenser
work with live electrical components. Have a qualified
limit provide for high temperature and pressure licensed electrician or other individual who has been
protection. properly trained in handling live electrical components
In hot water temperature control the softloading pulldown perform these tasks. Failure to follow all electrical
rate limit operates as a softloading pullup rate limit. The safety precautions when exposed to live electrical
setpoint for setting the temperature rate limit is the same components could result in death or serious injury.
setpoint for normal cooling as it is for hot water
temperature control. The hot water temperature control
feature is not designed to run with HGBP, AFD, free
cooling, or ice making.
The factory set PID tuning values for the leaving water
temperature control are the same settings for both normal
cooling and hot water temperature control.

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Start-up and Shut-down

resetting diagnostic “Condenser Water Flow Overdue”

WARNING shall be generated which terminates the prestart mode
and de-energizes the condenser water pump relay. This
Toxic Hazards! diagnostic is automatically reset if flow is established at
• Do not run evaporator water pump longer than any later time.
30 minutes after the chiller is shut down. Note: This diagnostic does not automatically reset if
• Ensure that the evaporator is isolated from the hot Tracer AdaptiView is in control of the condenser
water loop before changeover to heating mode. pump through its condenser pump relay, since it is
Do not allow the chiller to increase above 110°F in commanded off at the time of the diagnostic. It may
temperature while unit is off. Failure to prevent high reset and allow normal chiller operation if the
chiller temperature will cause the inside pressure to pump was controlled from some external source.
rise. The rupture disk is designed to relieve and When less than 5 seconds remain on the restart inhibit, the
discharge the refrigerant from the unit if the pressure in pre-start starter test is conducted on wye-delta starters. If
the evaporator exceeds 15 PSIG (103.4 Kpa). A
faults are detected, the unit’s compressor will not start, and
significant release of refrigerant into a confined space
due to a rupture disk failure could displace available a diagnostic will be generated. If the compressor motor
oxygen to breathe and cause possible asphyxiation. starts and accelerates successfully, Running appears on
Should a rupture disk fail, evacuate the area the display. If the purge is set to AUTO, the purge will start
immediately and contact the appropriate rescue or running and will run as long as the chiller is running.
response authority. Failure to take appropriate Note: If a manual reset diagnostic condition is detected
precautions or react properly to a potential hazard
during start-up, unit operation will be locked out,
could result in death or serious injury.
and a manual reset is required before the start-up
sequence can begin again. If the fault condition has
Daily Unit Start-up not cleared, the control panel will not permit
1. Verify the chilled water pump and condenser water restart.
pump starter are in ON or AUTO. When the cooling requirement is satisfied, the control
2. Verify the cooling tower is in ON or AUTO. panel originates a Shutting down signal. The inlet guide
vanes are driven closed for 50 seconds the compressor
3. Check the oil tank oil level on both oil tanks; the level
stops, and the unit enters a 3-minute post-lube period. The
must be visible in or above the lower sight glass. Also,
evaporator pump may continue to run for the amount of
check the oil tank temperature; normal oil tank
time set using Tracer AdaptiView.
temperature before start-up is 140°F to 145°F (60°C to
63°C). Once the post-lube cycle is done, the unit returns to auto
mode.
Note: Each oil heater is energized during the
compressor off cycle. During unit operation, the Seasonal Unit Start-up
oil tank heater may be de-energized.
1. Close all drain valves, and reinstall the drain plugs in
4. Check the chilled water setpoint and readjust it, if
the evaporator and condenser headers.
necessary, in the Chiller Settings menu.
2. Service the auxiliary equipment according to the start-
5. If necessary, readjust the current limit setpoint in the
up and maintenance instructions provided by the
Chiller Setpoints menu.
respective equipment manufacturers.
6. Press AUTO.
3. Fill and vent the cooling tower, if used, as well as the
The control panel also checks compressor motor winding condenser and piping. At this point, all air must be
temperature, and a start is initiated after a minimum removed from the system (including each pass). Then
restart inhibit time if the winding temperature is less than close the vents in the condenser waterboxes.
265°F. The chilled water pump relay is energized and
4. Open all of the valves in the evaporator chilled water
evaporator water flow is proven. Next, the control panel
circuit.
checks the leaving evaporator water temperature and
compares it to the chilled water setpoint. If the difference 5. If the evaporator was previously drained, fill and vent
between these values is less than the start differential the evaporator and chilled water circuit. When all air is
setpoint, cooling is not needed. removed from the system (including each pass), close
the vent valves in the evaporator waterboxes.
If the control panel determines that the difference between
the evaporator leaving water temperature and chilled 6. Lubricate the external vane control linkage as needed.
water setpoint exceeds the start differential setpoint, the 7. Check the adjustment and operation of each safety and
unit enters the initiate Start Mode and the oil refrigerant operating control.
pump and the condenser water pump are started. If flow is
not initially established within 4 minutes 15 seconds of the 8. Close all disconnect switches.
condenser pump relay energization, an automatically

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Start-up and Shut-down

9. Perform instructions listed in “Daily Unit Start-up,”

p. 67.

Daily Unit Shut-down

Note: Also refer to Figure 46, p. 64.
1. Press STOP.
2. After compressor and water pumps shut-down, the
operator may turn Pump Contactors to OFF or open
pump disconnects.

Seasonal Unit Shut-down

NOTICE:
Oil Sump Heater Operation!
Control power disconnect switch must remain closed
to allow oil sump heater operation. Failure to do this
will allow refrigerant to condense in the oil pump.

1. Open all disconnect switches except the control power

disconnect switch.
2. Drain the condenser piping and cooling tower, if used.
Rinse with clean water.
3. Remove the drain and vent plugs from the condenser
headers to drain the condenser. Air dry bundle of
residual water.
4. Once the unit is secured for the season, the
maintenance procedures described Table 19, p. 70 and
Table 20, p. 70 should be performed by qualified Trane
service technicians.
Note: During extended shut-down periods, be sure to
operate the purge unit for a two-hour period every
two weeks. This will prevent the accumulation of
air and noncondensables in the machine. To start
the purge, change the purge mode to ON in the unit
control “Settings Purge” menu. Remember to turn
the purge mode to “Adaptive” after the two-hour
run time.

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Recommended Maintenance
forms. When filled out accurately by the machine operator,
WARNING the completed logs can be reviewed to identify any
developing trends in the chiller’s operating conditions. For
Hazardous Voltage w/Capacitors! example, if the machine operator notices a gradual
Disconnect all electric power, including remote increase in condensing pressure during a month’s time, he
disconnects and discharge all motor start/run can systematically check, then correct the possible cause
capacitors before servicing. Follow proper lockout/ of this condition.
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives Normal Operation
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of Table 18. Normal operation
capacitors. Verify with an appropriate voltmeter that all Operating Characteristic Normal Reading
capacitors have discharged. Failure to disconnect
Approximate Evaporator Pressure 6 to 9 PSIA / -9 to -6 PSIG
power and discharge capacitors before servicing could
17 to 27 PSIA / 2 to 12 PSIG
result in death or serious injury. Approximate Condenser Pressure(a), (b)
(standard condenser)
For additional information regarding the safe discharge Oil Sump Temperature Unit not running 140°F to 176°F (60°C to 80°C)
of capacitors, see PROD-SVB06A-EN Oil Sump Temperature Unit running 95°F to 162°F (35°C to 72°C)
Oil Sump Differential Oil Pressure(c) 18 to 22 psid
(a) Condenser pressure is dependent on condenser water temperature, and
NOTICE: should equal the saturation pressure of HCFC-123 at a temperature
above that of leaving condenser water at full load.
Check Purge Run-Time for Unit Hermetic (b) Normal pressure readings for ASME condenser exceed 12 psig.
(c) Oil tank pressure -9 to -6 psig HG Discharge oil pressure 7 to 15 psig.
Integrity!
If frequent purging is required, monitor purge pumpout
rate, identify and correct source of air or water leak as
soon as possible. Failure to do so could shorten chiller
life expectancy, due to moisture contamination caused
by leakage.

NOTICE:
Do Not Use Non-Compatible Parts or
Materials!
Only genuine Trane® replacement components with
identical Trane part numbers should be used in Trane
CenTraVac chillers. Use of non-compatible parts or
materials could result in equipment damage. Trane
assumes no responsibility for damages resulting from
the use of non-compatible parts or materials.

This section describes the basic chiller preventive

maintenance procedures, and recommends the intervals
at which these procedures should be performed. Use of a
periodic maintenance program is important to ensure the
best possible performance and efficiency from a
CenTraVac chiller.
Recommended purge maintenance procedures are
detailed in Operation and Maintenance Guide:
EarthWise™ Purge System with Tracer AdaptiView™
Control for Water-Cooled CenTraVac™ Chillers
(PRGD-SVX01B-EN, or the most recent version).

Record Keeping Forms

An important aspect of the chiller maintenance program is
the regular completion of records. Refer to “Forms and
Check Sheets,” p. 78 for copies of the recommended

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Recommended Maintenance

Table 19. Recommended maintenance

Daily Every 3 months Every 6 months Annually(a), (b)
Check the chiller’s evaporator and
condenser pressures, oil tank
pressure, differential oil pressure
and discharge oil pressure.
Compare the readings with the
values provided in Table 18, p. 69.
Check the oil level in the chiller oil
sump using the two sight glasses
provided in the oil sump head.
When the unit is operating, the oil
level should be visible in the lower
sight glass.
Complete logs on a daily basis.
Clean all water strainers in the
water piping system.
Lubricate the vane control linkage
bearings, ball joints, and pivot
points.
Lubricate vane operator tang
O-rings.
Lubricate the oil filter shutoff valve
O-rings.
Drain contents of the rupture disc
and purge discharge ventline drip-
leg into an evacuated waste
container. Do this more often if the
purge is operated excessively.
Apply oil to any exposed metal
parts to prevent rust.
Shut down the chiller once each year to check the
items listed on the “CDHF, CDHG Annual
Inspection List” (refer to “Forms and Check
Sheets,” p. 78).
Perform the annual maintenance procedures
referred to in the maintenance section of the purge
manual.
Use an ice water bath to verify the accuracy of the
evaporator refrigerant temperature sensor
(4R10). If the sensor is exposed to temperature
extremes outside its normal operating range (0°F
to 90°F [-18°C to 32°C]), check its accuracy at
six-month intervals.
Inspect the condenser tubes for fouling; clean if
necessary.
Submit a sample of the compressor oil to a Trane-
qualified laboratory for comprehensive analysis.
Measure the compressor motor winding resistance
to ground; a qualified service technician should
conduct this check to ensure that the findings are
properly interpreted. Contact a qualified service
organization to leak-test the chiller; this
procedure is especially important if the system
requires frequent purging.
(a) Every three years, use a nondestructive tube test to inspect the condenser and evaporator tubes. It may be desirable to perform tube tests on these
components at more frequent intervals, depending upon chiller application. This is especially true of critical process equipment.
(b) Contact a qualified service organization to determine when to conduct a complete examination of the unit to discern the condition of the compressor
and internal components. Check the following: chronic air leaks (which can cause acidic conditions in the compressor oil and result in premature bearing
wear) and evaporator or condenser water tube leaks (water mixed with the compressor oil can result in bearing pitting, corrosion, or excessive wear).

Table 20. Recommended maintenance of optional features

Feature Every 3 months Every 6 months Annually
Waterbox Coatings Inspect waterbox coatings within the
first 1–3 months to determine a
required maintenance schedule for
your job site. Refer to “Waterbox and
Tubesheet Protective Coatings,” p. 73
for more information.

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Recommended Maintenance

Table 20. Recommended maintenance of optional features (continued)

Waterbox Anodes Inspect waterbox anodes within the
first 1–3 months to determine a
required maintenance schedule for
your job site. Refer to “Sacrificial
Anodes,” p. 73 for more information.
Gantries Lubricate the gantries annually. Use ConocoPhillips
MegaPlex® XD3 (gray in color), LPS® MultiPlex Multi-
Purpose (blue in color), or equivalent.
Hinges Lubricate the hinges annually. Use ConocoPhillips
MegaPlex® XD3 (gray in color), LPS® MultiPlex Multi-
Purpose (blue in color), or equivalent.

Recommended Compressor Oil cooling capacity. Therefore, proper maintenance of the

purge system is required.
Change The Trane EarthWise™ Purge is the only purge system
available for the CenTraVac chiller. The purge is designed
After the first six months of accumulated operation, or
to remove noncondensable gases and water from the
after 1,000 hours operation—whichever comes first—it is
refrigeration system. EarthWise Purge unit operation,
recommended to change the oil and filter. After this oil
maintenance and troubleshooting is covered by a separate
change, it is recommended to subscribe to the Trane
operation and maintenance manual, which may be
annual oil analysis program rather than automatically
obtained from the nearest Trane office.
change the oil as part of scheduled maintenance. Change
the oil only if indicated by the oil analysis. Use of an oil Leak Checking Based on Purge Pump Out
analysis program will reduce the chiller’s overall lifetime
waste oil generation and minimize refrigerant emissions.
Time
The analysis determines system moisture content, acid Use the following formula to calculate the annual
level, and wear metal content of the oil, and can be used refrigerant leakage rate based on the daily purge pump out
as a diagnostic tool. The oil analysis should be performed time and the unit refrigerant charge.
by a qualified laboratory that is experienced in refrigerant
Formula: % annual leakage rate = [(X min/day)*(0.0001 lb
and oil chemistry and in the servicing of Trane® centrifugal
R-123/min)/(Y lb)]*100
chillers.
• X= minutes/day of purge pump out operation
In conjunction with other diagnostics performed by a
qualified service technician, oil analyses can provide • Y= initial refrigerant charge
valuable information on the performance of the chiller to Figure 49 has been developed to aid in determining when
help minimize operating and maintenance costs and to do a leak check of a chiller based on the purge pump out
maximize its operating life. A drain fitting is installed after time and unit size. This figure depicts normal purge pump-
the oil filter for obtaining oil samples. out times, small leaks and large leaks based on the chiller
Notes: tonnage.
• Use only Trane OIL00022. A full oil change is 9 gallons If the purge pump-out time is in the small leak region, then
of OIL00022. a leak check should be performed and all leaks repaired at
• One spare oil filter is provided with each new chiller. If the earliest convenience. If the purge pump-out time is in
not used earlier, use at first recommended oil and filter the large leak region, a thorough leak check of the unit
change. should be performed immediately to find and fix the leaks.
• This recommended oil change is not covered by
factory warranty.

Purge System
The use of low-pressure refrigerant in CenTraVac chillers
permits any section of the unit to be below atmospheric
pressure, regardless of whether the unit is running. This
creates an environment in which air or moisture could
enter the unit. If these noncondensables are allowed to
accumulate while the chiller is running, they become
trapped in the condenser; this situation increases
condensing pressure and compressor power
requirements, and reduces the chiller’s efficiency and

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Recommended Maintenance

Figure 49. Purge operation under typical and leak Refrigerant Charge
conditions

WARNING
large leak
small leaks Refrigerant May Be Under Positive
typical operation Pressure!
Purge minutes/day

System contains oil and refrigerant and may be under

positive pressure. Recover refrigerant to relieve
pressure before opening the system. See unit
nameplate for refrigerant type. Do not use non-
approved refrigerants, refrigerant substitutes, or
refrigerant additives. Failure to recover refrigerant to
relieve pressure or the use of non-approved
refrigerants, refrigerant substitutes, or refrigerant
additives could result in an explosion which could
result in death or serious injury or equipment damage.
Chiller tons (per circuit)
Refer to Installation, Operation, and Maintenance:
Refrigerant Handling Guidelines - A Guide for the Service
Technician’s Conservation & Safe Handling of Low-
Long Term Unit Storage Pressure Refrigerants in Trane® Chillers (CTV-SVX05B-EN,
or the most recent revision).
Contact your local Trane service agency for
recommendations for storage requirements for chillers to Leak Testing
be removed from service in excess of a normal seasonal
shut-down.
WARNING
WARNING Hazard of Explosion!
Refrigerant May Be Under Positive Never use an open flame to detect gas leaks. Explosive
conditions may occur. Use a leak test solution or other
Pressure! approved methods for leak testing. Failure to follow
System contains oil and refrigerant and may be under recommended safe leak test procedures could result in
positive pressure. Recover refrigerant to relieve death or serious injury or equipment or property-only-
pressure before opening the system. See unit damage.
nameplate for refrigerant type. Do not use non-
approved refrigerants, refrigerant substitutes, or
refrigerant additives. Failure to recover refrigerant to
relieve pressure or the use of non-approved
WARNING
refrigerants, refrigerant substitutes, or refrigerant Hazardous Pressures!
additives could result in an explosion which could
If a heat source is required to raise the tank pressure
result in death or serious injury or equipment damage.
during removal of refrigerant from cylinders, use only
warm water or heat blankets to raise the tank
temperature. Do not exceed a temperature of 150°F. Do
NOTICE: not, under any circumstances apply direct flame to any
Freezing Tubes Hazard! portion of the cylinder. Failure to follow these safety
precautions could result in a sudden rise of pressure
Ensure that water is not present in tubes during possibly resulting in a violent explosion which could
evacuation. Failure to follow this instruction could result in death or serious injury.
result in freezing tubes, damaging the chiller.
Important: If leak testing is required, contact a Trane
service agency.

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Recommended Maintenance

Recommended System Maintenance chemical mineral content) for a recommended

cleaning solution suitable for the job.
Note: A standard condenser water circuit is
NOTICE: composed solely of copper, cast iron, and steel.
Proper Water Treatment!
The use of untreated or improperly treated water in a NOTICE:
CenTraVac could result in scaling, erosion, corrosion,
algae or slime. It is recommended that the services of a
Unit Corrosion Damage!
qualified water treatment specialist be engaged to Proper procedures must be followed when using
determine what water treatment, if any, is required. corrosive chemicals to clean water side of unit. It is
Trane assumes no responsibility for equipment failures recommended that the services of a qualified chemical
which result from untreated or improperly treated cleaning firm be used. Proper personal protective
water, or saline or brackish water. equipment as recommended by the chemical
manufacturer should be used. Refer to the chemicals
Condenser MSDS sheet for proper safety procedures. Failure to
follow proper procedures could result in corrosion
Condenser tube fouling is indicated when the approach damage to the unit and tubes.
temperature (the difference between the condensing
refrigerant temperature and the leaving condenser water Important: All of the materials used in the external
temperature) is higher than predicted. circulation system, the quantity of the
If the annual condenser tube inspection indicates that the solution, the duration of the cleaning
tubes are fouled, two cleaning methods, mechanical and period, and any required safety precautions
chemical, can be used to rid the tubes of contaminants. should be approved by the company
Use the mechanical cleaning method to remove sludge furnishing the materials or performing the
and loose material from smooth-bore tubes. cleaning. Remember, however, that
whenever the chemical tube cleaning
To clean other types of tubes including internally- method is used, it must be followed up with
enhanced types, consult a qualified service organization mechanical tube cleaning, flushing and
for recommendations. inspection.
Figure 50. Typical chemical cleaning setup Evaporator
Since the evaporator is typically part of a closed circuit, it
may not accumulate appreciable amounts of scale or
pipe shutoff sludge. Normally, cleaning every three years is sufficient.
connections valves However, periodic inspection and cleaning is
recommended on open evaporator systems, such as air
washers.

Waterbox and Tubesheet Protective Coatings

Trane recommends that coated waterboxes/tubesheets—
cleaning regardless of the type of protective coating included—be
solution taken out of service within the first one to three months of
circulator operation for inspection. Any voids or defects identified
pump upon inspection must be repaired. If the water quality is
known to be highly supportive of corrosion (i.e., sea water,
etc.), inspect the coating system at one month; if the water
quality is known to be relatively benign (i.e., normal
treated and clean condenser water), inspect the coating
1. Follow all instructions in “Waterbox Removal and system within three months. Only when initial inspections
Installation,” p. 75 to remove waterbox covers. show no problems are present should subsequent
2. Work a round nylon or brass bristled brush (attached to maintenance intervals be increased.
a rod) in and out of each of the condenser water tubes Sacrificial Anodes
to loosen the sludge.
The replacement schedule for the optional zinc or
3. Thoroughly flush the condenser water tubes with clean magnesium anodes can vary greatly with the
water. aggressiveness of the water that is in the system. Some
Scale deposits are best removed by chemical means. sites could require anode replacement every two to three
Be sure to consult any qualified chemical house in the months while other sites may require anode replacement
area (one familiar with the local water supply’s every two to three years. Trane recommends that anode
inspection for wear sometime within the first several

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Recommended Maintenance

months of the anodes being placed into service. If the

observed loss of anode material is small, then the interval
between subsequent inspections can be lengthened.
Replace the anode and/or shorten the inspection interval if
the anode has lost 50 percent or more of its original mass.
If anode depletion occurs very quickly, consult a water
treatment specialist to determine if the anode material
selected is correct for the application.

NOTICE:
Equipment Damage!
Do NOT use Teflon-based tape or paste on anode; a
small amount of liquid sealant (Loctite® 242 or
equivalent) may be applied to prevent leakage when
installing an anode, but do not apply so much sealant
that it prevents the necessary electrical connection
between the anode and the waterbox. Failure to follow
these instructions could result in equipment damage.

As needed after draining the waterbox, use a 2-1/2 in.

wrench to remove/install Trane-supplied waterbox
anodes.

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Waterbox Removal and Installation

Important: Only qualified technicians should perform outside the United States, refer to literature
the installation and servicing of this provided by the applicable manufacturing
equipment. location.
2. Select the proper lift connection device from the
Discussion Table 23, p. 77. The rated lifting capacity of the selected
lift connection device must meet or exceed the
This section will discuss recommended hoist ring/clevises published weight of the waterbox. Verify the waterbox
and lifting. Proper lifting technique will vary based on weight from the latest published literature.
mechanical room layout.
3. Ensure that the lift connection device has the correct
• It is the responsibility of the person(s) performing the
connection for the waterbox (e.g., thread type [course/
work to be properly trained in the safe practice of
fine, English/metric] and bolt diameter [English/
rigging, lifting, securing, and fastening of the
metric]).
waterbox.
• It is the responsibility of the person(s) providing and 4. Properly connect the lift connection device to the
using the rigging and lifting devices to inspect these waterbox. Refer to Figure 51, p. 75 and ensure that the
devices to ensure they are free from defect and are lift connection device is securely fastened.
rated to meet or exceed the published weight of the CTV units—Install hoist ring on to the lifting connection
waterbox. on the waterbox. Torque to 100 ft·lb for 3/4-in. threaded
• Always use rigging and lifting devices in accordance connections and 28 ft·lb for 1/2-in. threaded
with the applicable instructions for such device. connections.
Figure 51. Waterbox rigging and lifting—condenser and
Procedure evaporator connections

WARNING
Heavy Objects!
Each of the individual cables (chains or slings) used to
lift the waterbox must be capable of supporting the
entire weight of the waterbox. The cables (chains or
slings) must be rated for overhead lifting applications
with an acceptable working load limit. Failure to
properly lift waterbox could result in death or serious
injury.

WARNING
Eyebolts!
The proper use and ratings for eyebolts can be found in
ANSI/ASME standard B18.15. Maximum load rating for
eyebolts are based on a straight vertical lift in a
gradually increasing manner. Angular lifts will
significantly lower maximum loads and should be
avoided whenever possible. Loads should always be
applied to eyebolts in the plane of the eye, not at some
angle to this plane. Failure to properly lift waterbox
could result in death or serious injury.

Review mechanical room limitations and determine the

safest method or methods of rigging and lifting the
waterboxes.
1. Determine the type and size of chiller being serviced.
Refer to Trane nameplate located on chiller control
panel. 5. Disconnect water pipes, if connected.
Important: This literature contains rigging and lifting 6. Remove waterbox bolts.
information only for Trane CTV chillers built
in La Crosse. For Trane CTV chillers built 7. Lift the waterbox away from the shell.

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Waterbox Removal and Installation

in reverse. Use new O-rings or gaskets on all joints after

WARNING thoroughly cleaning each joint.

Overhead Hazard! • Torque waterbox bolt (see Table 21).

Never stand below or in close proximity to heavy Torque Requirements

objects while they are suspended from, or being lifted
by, a lifting device in case the object drops. Failure to Refer to Table 21 for torque and for CVHE torquing
follow these instructions could result in death or procedure, refer to Installation—Piping Information:
serious injuries. Water-Cooled CenTraVac™ (CVHE-SVN02D-EN, or the
most recent version).
8. Store waterbox in a safe and secure location and
position. Table 21. CenTraVac torque
Note: Do not leave waterbox suspended from lifting Botl Size Gasket type O-ring Flat
device. Inch (mm) ft·lb (N·m) ft·lb (N·m)
3/8 (9.5) 25 (34) 12–18 (16–24)
Reassembly 1/2 (13) 70 (95) 33–50 (45–68)

Once service is complete, the waterbox should be 5/8 (16) 150 (203) 70–90 (95–122)
reinstalled on the shell following all previous procedures 3/4 (19) 250 (339) 105–155 (142–210)

Table 22. CenTraVac waterbox weights

Fabricated Non-Marine Fabricated Non-
Waterbox, Welded Flat Non-Marine Cast Marine Waterbox Marine Style Waterbox
Plate Waterbox Welded Dome Cover
Shell Weight Lifting Weight Lifting Weight Lifting Weight Lifting
Size Description lb (kg) Connection lb (kg) Connection lb (kg) Connection lb (kg) Connection
Evaporator, 150 psi
265 (120) 3/4 - 10 NA NA NA NA 176 (80) 1/2 - 13
Evaporator, 300 psi
032
Condenser, 150 psi NA NA 176 (80) 1/2 - 13 NA NA 176 (80) 1/2 - 13
Condenser, 300 psi 265 (120) 3/4 - 10 NA NA NA NA 221 (100) 1/2 - 13
Evaporator, 150 psi 397 (180) 3/4 - 10 397 (180) Lifting Fixture NA NA 265 (120) 1/2 - 13
Evaporator, 300 psi 353 (160) 3/4 - 10 NA NA NA NA 265 (120) 1/2 - 13
050
Condenser, 150 psi 265 (120) 1/2 - 13 265 (120) 1/2 - 13 NA NA 265 (120) 1/2 - 13
Condenser, 300 psi 551 (250) 3/4 - 10 NA NA NA NA 441 (200) 1/2 - 13
Evaporator, 150 psi 662 (300) 3/4 - 10 662 (300) Lifting Fixture NA NA 441 (200) 3/4 - 10
Evaporator, 300 psi 882 (400) 3/4 - 10 NA NA NA NA 551 (250) 3/4 - 10
080
Condenser, 150 psi 551 (250) 3/4 - 10 551 (250) 3/4 - 10 NA NA 441 (200) 1/2 - 13
Condenser, 300 psi 882 (400) 3/4 - 10 NA NA NA NA 882 (400) 3/4 - 10
Evaporator, 150 psi 882 (400) 3/4 - 10 NA NA NA NA 662 ( 300) 3/4 - 10
Evaporator, 300 psi 1323 (600) 3/4 - 10 NA NA NA NA 882 (400) 3/4 - 10
142
Condenser, 150 psi 1543 (700) 3/4 - 10 NA NA 441 (200) 3/4 - 10 1323 (600) 3/4 - 10
Condenser, 300 psi 1985 (900) 3/4 - 10 NA NA NA NA 1764 (800) 3/4 - 10
Evaporator, 150 psi 1544 (700) 3/4 - 10 NA NA NA NA 1323 (600) 3/4 - 10
Evaporator, 300 psi 2205 (1000) 3/4 - 10 NA NA NA NA 1764 (800) 3/4 - 10
210
Condenser, 150 psi 2205 (1000) 3/4 - 10 NA NA 662 (300) 3/4 - 10 1764 (800) 3/4 - 10
Condenser, 300 psi 2867 (1300) 3/4 - 10 NA NA NA NA 2426 (1100) 3/4 - 10
Evaporator, 150 psi 1985 (900) 3/4 - 10 NA NA NA NA 1544 (700) 3/4 - 10
Evaporator, 300 psi 3087 (1400) 3/4 - 10 NA NA NA NA 2205 (1000) 3/4 - 10
250
Condenser, 150 psi 2867 (1300) 3/4 - 10 NA NA 662 (300) 3/4 - 10 2205 (1000) 3/4 - 10
Condenser, 300 psi 3528 (1600) 3/4 - 10 NA NA NA NA 3087 (1400) 3/4 - 10
Note:Refer to product block identifier on the model number plate which identifies the evaporator and condenser shell sizes and the rated pressure.
The designators are as follows:
Evaporator Size = EVSZ Condenser Size = CDSZ Evaporator Pressure = EVPR Condenser Pressure = CDPR
Weights shown are maximum for waterbox size. Verify the waterbox from the latest published literature.

76 CDHF-SVX01E-EN
_CDHF-SVX01E.book Page 77 Monday, April 29, 2013 2:13 PM

Waterbox Removal and Installation

Connection Devices Information

Table 23. Connection devices
Part
Unit Product Number Order Information
CTV Safety Hoist RNG01884 Contact Trane Parts
Ring 3/4-10 Department
CTV Safety Hoist RNG01885 Contact Trane Parts
Ring 1/2-13 Department
CTV Evap Lifting BAR00400 Contact Trane Parts
Fixture Department

CDHF-SVX01E-EN 77
_CDHF-SVX01E.book Page 78 Monday, April 29, 2013 2:13 PM

Forms and Check Sheets

The following forms and check sheets are included for use
with Trane start-up of CDHF and CDHG CenTraVac chillers.
Forms and check sheets are used, as appropriate, for
installation completion verification before Trane start-up
is scheduled, and for reference during the Trane start-up.
Where the form or check sheet also exists outside of this
publication as standalone literature, the literature order
number is also listed.
• “CenTraVac™ Installation Completion Check Sheet
and Request for Trane Service” (CTV-ADF001-EN)
• “CDHF, CDHG Start-up Task List”
• “CDHF, CDHG Annual Inspection List”
• “Operator Log”

78 CDHF-SVX01E-EN
_CDHF-SVX01E.book Page 1 Monday, April 29, 2013 2:13 PM

CenTraVac™ Installation Completion Check Sheet and Request for

Trane Service
Important: A copy of this completed form must be submitted to the Trane service agency that will be responsible for the start-
up of the chiller. Start-up will NOT proceed unless applicable items listed in this form have been satisfactorily
completed.

To: Trane Service Office:

S.O. Number: Serial Numbers:
Job/Project Name:
Address:
The following items are being installed and will be completed by:

Important: Start-up must be performed by Trane or an agent of Trane specifically authorized to perform start-up and warranty
of Trane® products. Contractor shall provide Trane (or an agent of Trane specifically authorized to perform start-
up) with notice of the scheduled start-up at least two weeks prior to the scheduled start-up. Equipment not
started by Trane is not warranted by Trane.

Check boxes if the task is complete or if the answer is “yes.”

1. CenTraVac
 In place and piped.
Note: Do not insulate the CenTraVac chiller or adjacent piping prior to the chiller commissioning by Trane service
personnel. The contractor is responsible for any foreign material left in the unit.
2. Piping
Chilled water piping connected to:
 CenTraVac
 Air handling units
 Pumps
Condenser and heat recovery condenser (as applicable) piping connected to:
 CenTraVac
 Pumps
 Cooling tower
 Heating loop (as applicable)
 Make-up water connected to cooling tower
 Water supply connected to filling system
 Systems filled
 Pumps run, air bled from system
 Strainers cleaned
 Rupture disc or RuptureGuard™ ventilation piping installed
3. Flow balancing valves installed
 Leaving chilled water
 Leaving condenser water
 Optional heat recovery or auxiliary condenser water
4. Gauges, thermometers, and air vents
 Installed on both sides of evaporator
 Installed on both sides of condenser and heat recovery condenser (as applicable)
5. Wiring
 Compressor motor starter has been furnished by Trane, or has been configured and installed in compliance with the
appropriate Trane Starter by Others specification (available from your local Trane Sales Office)
 Full power available
 Interconnecting wiring, starter to panel (as required)
 External interlocks (flow switch, pumps auxiliary, etc.)
 Chiller motor connection (remote starters)
Note: Do not make final remote starter-to-compressor motor connections until requested to do so by the Trane
service representative!

CTV-ADF001-EN 1
_CDHF-SVX01E.book Page 2 Monday, April 29, 2013 2:13 PM

 Chilled water pump (connected and tested)

 Condenser water pump (connected and tested)
 Cooling tower fan rotation checked
 Heat recovery condenser water pump (as applicable)
 115 Vac power available for service tools
 All controls installed and connected
 All magnetic starters installed and connected
6. Testing
 Dry nitrogen available for pressure testing
 Trace gas amounts of R-22 or R-134a available for leak testing, if necessary
7.  Refrigerant on job site
8.  Systems can be operated under load conditions
9.  Electrical, control man, and contractor’s representative are available to evacuate, charge, and test the CenTraVac under
serviceman’s supervision
10. Equipment room
 Does the equipment room have a refrigerant monitor/sensor capable of monitoring and alarming within the allowable
exposure level of the refrigerant?
 Does the installation have properly placed and operating audible and visual refrigerant alarms?
 Does the equipment room have proper mechanical ventilation?
 If it is required by local code, is a self-contained breathing apparatus available?
11. Owner awareness
 Has the owner been fully instructed on the proper use of refrigerant HCFC-123?
 Does the owner have a copy of the MSDS for refrigerant HCFC-123?
 Was the owner given a copy of the Refrigerant Handling Guidelines?
Note: Additional time required to properly complete the start-up and commissioning, due to any incompleteness of the
installation, will be invoiced at prevailing rates.
This is to certify that the Trane® equipment has been properly and completely installed, and that the applicable items listed above
have been satisfactorily completed.
Checklist completed by: ______________________________________________________________________________________________
Signed: _____________________________________________________________________ Date: _______________________________
In accordance with your quotation and our purchase order number __________________, we will therefore require the presence
of Trane service on this site, for the purpose of start-up and commissioning, by __________________ (date).
Note: Minimum two-week advance notification is required to allow scheduling of the chiller start-up.
Additional comments/instructions: ____________________________________________________________________________________
_____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________

CenTraVac, RuptureGuard, Trane, and the Trane logo are trademarks or registered trademarks of Trane in the United States and other countries.

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the
leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad
portfolio of advanced controls and HVAC systems, comprehensive building services, and parts. For more
information, visit www.Trane.com.

Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

© 2013 Trane All rights reserved

CTV-ADF001-EN 19 Apr 2013 We are committed to using environmentally
Supersedes CTV-ADF001-EN (01 Oct 2012) conscious print practices that reduce waste.
_CDHF-SVX01E.book Page 1 Monday, April 29, 2013 2:13 PM

CDHF, CDHG Start-up Task List

Start-up Tasks to be Performed By Trane

WARNING
Safety Alert!
In addition to the following tasks, you MUST:
• Follow all instructions in the chiller’s Installation, Operation, and Maintenance manual, including warnings, cautions, and
notices.
• Perform all required tasks in any applicable Service Alerts and Service Bulletins.
• Review and understand all information provided in Submittals and Design Specifications.
Failure to do so could result in death or serious injury.

General
• Inspect chiller for damage (shipping or rigging).
• Verify and record unit nitrogen holding charge pressure.
• Inspect water piping for proper installation.
– Inspect strainers, flow sensing devices, isolation valves, pressure gauges, thermometer wells, flow balancing valves, vent
cocks, and drains.
– Inspect cooling tower piping.
• Verify proper clearances.
• Power wiring meets size requirement.
– Verify proper voltage and amperage rating.
• Verify proper foundation installation.
• Verify unit isolator pads/springs have been installed.
• Verify low voltage circuits are isolated from high voltage circuits.
• Check equipment room for ventilation, refrigerant monitor, rupture disc piping, and PPE.

Note: All conditions which do not conform to the established requirements for unit installation must be corrected prior to start-
up. Any non-conforming condition which is not corrected prior to start-up must be noted in the Non-Compliance Form
(PROD-ADF001-EN) by the start-up technician; this information must also be signed by responsible site personnel before
start-up and the completed Non-Compliance Form will become part of the start-up record, submitted with a Start-up
Check Sheet and a Chiller Service Report.

Pre-Start Operations
• Verify nitrogen holding charge.
• Calibrate the high pressure cutout control (HPC).
• Meg compressor motor.
• Confirm proper oil pump operation.
• Evacuate unit.
• Check condenser installation.
• Check evaporator installation.

NOTICE:
Do Not Apply Electrical Power to a Unit in a Vacuum!
Applying electrical power to a motor in a vacuum could cause damage to the motor. In addition, on units with
inside-the-delta solid state starters, all power to the unit must be disconnected prior to evacuating the unit as line
power is directly applied to the motor terminals 4, 5, and 6. Failure to disconnect power to units with inside-the-delta
solid state starters during evacuation or when the unit is in a deep vacuum could cause compressor motor damage.

• Check electrical and controls.

– Inspect motor starter and control panel.
– Confirm all wiring connections are tight, free of abrasion and have no sharp bends in panel and on compressors.
– Inspect contactors and relays.

CDHF, CDHG Start-up Task List Revised: 19 Apr 2013

_CDHF-SVX01E.book Page 2 Monday, April 29, 2013 2:13 PM

– Verify unit wiring (low and high voltage) is correctly isolated, phased, and properly grounded.
– Connect external 120 Vac power to power up the control panel.
– Run the oil pump to verify pump can provide 18 to 22 psi net pressure.
– Verify and record control parameters.
– Verify all control interlocks are installed and properly functioning.
– Dry run starter (non-AFD).
• Measure condenser pressures and flow.
• Adjust condenser flow sensing device.
• Measure evaporator pressures and flow.
• Adjust evaporator flow sensing device.
• Inspect motor starter panel and perform starter panel checkout procedures.
• Confirm proper phase check incoming power.
• Inspect control panel.
• Apply separate source 120 Vac power to control to perform control panel checkout procedure.
• Review and record unit configuration parameters.
• Confirm oil pump pressure—regulating valve setting.
• Verify vane operator is working properly and moves without binding.
• Dry run test starter (non-AFD).
• Remove separate source power and reconnect wiring.

Preparation for Start-up

• Relieve nitrogen holding charge.
• Evacuate and charge the system.
• Apply power to the starter panel.
• Verify current to the oil sump heater.

Chiller Start-up
• Set Purge mode to “On.”
• Bump-start the compressor and verify compressor motor rotation.
• Start chiller.
• Verify no unusual noises or vibrations and observe operating conditions.
• If necessary, adjust oil pressure regulator between 18 psi to 22 psi net.
• Measure and verify refrigerant pump pressure.
• When chiller is stable, take system log three times at 15-minute intervals.
• Set Purge mode to “Adaptive.”
• Reset the “Starter Energy Consumption” resettable.
• Record a Chiller Service Report.
• Review “AdaptiView Display Customer Training Checklist.”
– Equipment Description
– Stopping/Starting Chiller Operation
– Alarms
– Reports
– Data Graphs
– Equipment Settings
– Display Settings
– Security Settings
– Basic Troubleshooting

Revised: 11 Apr 2013 CDHF, CDHG Start-up Task List

_CDHF-SVX01E.book Page 1 Monday, April 29, 2013 2:13 PM

CDHF, CDHG Annual Inspection List

Follow the annual maintenance instructions provided in the text of this manual, including but
not limited to:
Compressor Motor
• Motor continuity.
• Motor meg test.
• Check motor terminals.
• Inspect motor terminal board.
Starter or AFD
• Inspect starter contacts.
• Check all connections per manufacturer specifications.
• Follow all manufacturer recommendations for starter or AFD maintenance.
• Inspect/clean/service the AFD cooling system (water- or air-cooled AFD).
• Record all applicable starter or starter component settings.
Oil System
• Annual oil analysis (follow recommendations).
• Clean and lubricate oil system as required.
• Electrical inspection.
• Pump motor continuity check.
• Run oil pump and check differential oil pressure.
Condenser
• Inspect for fouling and scaling in tubes.
• Check operation of condenser water flow sensing device.
• Factory recommendation to eddy current test tubes every three years.
Evaporator
• Inspect for fouling and scaling in tubes.
• Check operation of evaporator water flow sensing device.
• Factory recommendation to eddy current test tubes every three years.
Control Circuits
• Verify control parameters.
• Test appropriate sensors for accuracy.
• Ensure sensors are properly seated in wells with thermopaste installed.
• Check evaporator leaving water temperature low temperature cutout setpoint.
• Condenser high pressure switch check-out.
• Check adjustment and operation of the inlet guide vane actuator.
Leak Test Chiller
• Check purge times and unit performance logs. If warranted, pressure leak test.
• Review oil analysis. If required, submit refrigerant sample for analysis.
• Inspect unit for any signs of refrigerant or oil leakage.
• Check unit for any loose bolts on flange, volutes, or casing.
Purge Unit
• Review the purge Installation, Operation, and Maintenance manual and follow maintenance and/or inspection items
identified.
• Review purge pump out data.
• Review overall operation of purge and service as necessary.
Exterior
• Inlet guide vane linkage.
• Clean and touch-up painted surfaces as needed.
• Repair deteriorated, torn, or missing insulation.

CDHF, CDHG Annual Inspection List Revised: 11 Apr 2013

_CDHF-SVX01E.book Page 2 Monday, April 29, 2013 2:13 PM

Optional Accessories
• If applicable, lubricate factory-installed gantries.
• After the first month of operation, inspect Heresite® or Belzona® coated waterboxes after first month; thereafter,
inspect as needed.
• Inspect anodes.
• Inspect and lubricate hinged waterboxes.
• With water flow sensing option, bleed tubing from waterboxes to transformers.

Revised: 11 Apr 2013 CDHF, CDHG Annual Inspection List

_CDHF-SVX01E.book Page 1 Monday, April 29, 2013 2:13 PM

Operator Log
Water-Cooled CDHF, CDHG CenTraVac Chiller with UC800 Controller
Tracer AdaptiView Reports—Log Sheet Log 1 Log 2 Log 3
Evaporator
Entering
Leaving
Saturated
Refrig. Press
Approach
Flow Sw Status
Condenser
Entering
Leaving
Saturated
Refrig. Press
Approach
Flow Sw Status
Compressor 1
Starts
Running Time
Oil Tank Press
Oil Discharge Press
Oil Diff Press
Oil Tank Temp
IGV Position %
IGV Steps
Motor 1
% RLA L1, L2, L3
Amps L1, L2, L3
Volts AB, BC, CA
Power KW
Load PF
Winding #1 Temp
Winding #2 Temp
Winding #3 Temp
Compressor 2
Starts
Running Time
Oil Tank Press
Oil Discharge Press
Oil Diff Press
Oil Tank Temp
IGV Position %
IGV Steps
Motor 2
% RLA L1, L2, L3
Amps L1, L2, L3
Volts AB, BC, CA
Power KW
Load PF
Winding #1 Temp
Winding #2 Temp
Winding #3 Temp
with AFD only
AFD Freq
AFD Speed
AFD Transistor Temp

CDHF, CDHG Operator Log Revised: 11 Apr 2013

_CDHF-SVX01E.book Page 2 Monday, April 29, 2013 2:13 PM

Water-Cooled CDHF, CDHG CenTraVac Chiller with UC800 Controller

Tracer AdaptiView Reports—Log Sheet Log 1 Log 2 Log 3
Purge
Time Until Next Purge Run
Daily Pumpout—24 hrs
Avg. Daily Pumpout—7 days
Daily Pumpout Limit/Alarm
Chiller On 7 days
Pumpout Chiller On 7 days
Pumpout Chiller Off 7 days
Pumpout—Life
Purge Rfgt Cprsr Suction Temp.
Purge Liquid Temp.
Carbon Tank Temp.

Date:
Technician:
Owner:

Revised: 11 Apr 2013 CDHF, CDHG Operator Log

_CDHF-SVX01E.book Page 3 Monday, April 29, 2013 2:13 PM

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the
leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad
portfolio of advanced controls and HVAC systems, comprehensive building services, and parts.
For more information, visit www.Trane.com.
Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

© 2013 Trane All rights reserved

CDHF-SVX01E-EN 29 Apr 2013 We are committed to using environmentally
Supersedes CDHF-SVX01D-EN (26 Feb 2013) conscious print practices that reduce waste.