Trane CVHH Installation, Operation And Maintenance Manual

Installation, Operation,
and Maintenance

CVHH Water-Cooled CenTraVac Chillers

With Tracer AdaptiView Control

Model: CVHH

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air­conditioning equipment can be hazardous and r equires 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 pr ecautions in the literature and
on the tags, stickers, and labels that are attached to the equipment.

October 2014

X39641257001

SAFETY WARNING

CVHH-SVX001A-EN

Introduction

X39003892001A

Read this manual thoroughly before operating or servicing
this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as
required. Y our personal safety and the proper operation of
this machine depend upon the strict observance of these
precautions.

The three types of advisories are defined as follows:

WARNING

Proper Field Wiring and Grounding
Required!

Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/ stat e/national electrical codes.

WARNING

CAUTIONs

NOTICE:

Indicates a potentially hazardous
situatio n which, if not avoided, could
result in death or serio us in jur y.

Indicates a potentially hazardous
situatio n which, if not avoided, could
result in minor or moderat e injury. It
could also be used to alert against
unsaf e practices.

Indicates a situation that could result in
equipment or property-damage only
accidents.

Important Environmental Concerns

Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are refrigerants
that contain Chlorine, Fluorine and Carbon (CFCs) and
those containing Hydrogen, Chlo rin e, Fluorine and
Carbon (HCFCs). Not all refrigerants containing these
compounds have the same po tential impact to the
environment. Trane advocates the responsible handling of
all refrigerants-including industry replacements for CFCs
and HCFCs.

Important Responsible Refrigerant Pr actic es

Trane believes that responsible refrigerant practices are
important to the environment, our customers, and the air
conditioning industry. All technician s who handle
refrigerants must be certified according to local rules. For
the USA, the Federal Clean Air Act (Section 608) sets forth
the requirements for handling, reclaiming, recovering and
recycling of certain refrigerants and the equipment that is
used in these service procedures. In addition, some states
or municipalities may have additional requirement s that
must also be adhered to for r esponsible management of
refrigerants. Know the applicable laws and follow them.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

© 2014 Trane All rights reserved CVHH-SVX001A-EN

Introduction

X39003892001A

WARNING

Personal Protective Equipment (PPE)
Required!

Installing/servicing this unit could result in exposure to
electrical, mechanical and chemical hazards.

• Before installing/servicing this unit, technicians
MUST put on all PPE required for the work being
undertaken (Examples; cut res istant gloves/sleeves,
butyl gloves, safety glasses, hard hat/bump cap, fall
protection, electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Material Safety Data
Sheets (MSDS)/Safety Data Sheets (SDS) and OSHA
guidelines for proper PPE.

• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate MSDS/ SDS and
OSHA/GHS (Global Harmonized System of
Clas s ification and Labelling of C hemicals ) guidelines
for information on allowable personal exposure
levels, proper respiratory protection and handling
instructions.

• If there is a ris k of energiz ed elec trical c ontact, arc, or
flash, tec hnicians MUST put on all PPE in ac c ordance
with OSHA, NFPA 70E, or other country-specific
requirements for arc flash protection, PRIOR to
servicing the unit. NEVER PE RFORM ANY
SWITCHING, DISCONNECTING, OR VOLTAGE
TESTING W ITHOUT PROPER ELECTRICAL PPE AND
ARC FL ASH CLOTHING. ENSURE ELECTRICAL
METERS AND EQUIPMENT ARE PROPERLY RATED
FOR INTENDED VOLTAGE.

Failure to follow instructions could result in death or
serious injury.

WARNING

Replace Manual in Cabinet After Use!

Failure to replace this Installation, Operation, and
Maintenance manual in cabinet after use could prevent
personnel fr o m access in g necessary safety information
and could r esult in death or serious injury or equipment
damage.

NOTICE:

Do Not Use Non-Compatible Parts or
Materials!

Use of non-compatible parts or materials c ould result in
equipment damage. Only genuine Trane® replacement
components with identical Trane part numbers should
be used in Trane CenTraVac chillers. Trane assumes no
responsibility for damages resulting from the use of
non-compatible parts or materials.

WARNING

Refrigerant May Be Under Positive
P ressure!

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. System contains oil and
refr igerant and may be under positive pressure.
Recover refrigerant to relieve pressure bef ore opening
the system. See unit nameplate for refrig er ant type. Do
not use non-approved refrigerants, refrigerant
substitutes, or refrigerant additives.

CVHH-SVX001A-EN 3

Note: Graphic labels (shown above) are used for CE

application only.

Copyright

This document and the information in it are the property of
T rane, and may not be used or reproduced in whole or in
part without written permission. Trane reserves the right
to revise this publication at any time, and to make changes
to its content without obligation to notify any person of
such revision or change.

Introduction

Trademarks

All trademarks referenced in this document are the
trademarks of their respective owners.

Revision History

CVHH-SVX001A-EN (10 Oct 2014)

• First version of this literature

Factory Warranty Information

Compliance with the following is required to preserve the
factory warranty:

All Unit Installations

Startup MU ST be performed by Trane, or an authorized
agent of Trane, to VALIDATE this WARRANTY. Contractor
must provide a two-week startup notification to T rane (or
an agent of Trane specifically authorized to perform
startup).

Additional Requirements for Units Requiring
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
origin ally 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
perform or have direct on-site technical supervision of
the disassembly and reassembly work.

• The installing con tractor must notify Trane—or an
agent of Trane spe cifically authorized to perform
startup and warranty of Trane
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 authoriz ed to perform startup and
warranty of Tran e

Trane, or an agent of Trane specifically authorized to
perform start-up and warr anty of Trane
provide qualified personnel and standard hand tools to
perform the disassembly work at a location specified by
the contractor. Trane, or an agent of Trane specifically
authorized to per form star t-up and warranty of Trane
products, will perform or have direct on-site supervision of
the disassembly and reassembly work. 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.

Important: Any devi ation from these r equirements

®

products.

must be agre ed upon prior to startup in a
written agreement from Trane.

®

products—two weeks

®

products, will

®

products, will

4 CVHH-SVX001A-EN

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings, Cautions, and No tices . . . . . . . . 2

Important Environmental Concerns . . . . . 2

Important Responsible Refrigerant Pra ctices

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Unit and Compressor Nameplates . . . . . . . . 8

Unit Nameplate . . . . . . . . . . . . . . . . . . . . . . . 8

Compresso r Nameplate . . . . . . . . . . . . . . . . 9

Model Number Descriptions . . . . . . . . . . . . . 10

CVHH CenTraVac Chiller Description . . . . 10

CCHH Centrifugal Compressor Descri ption 10

Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . 11

ASHRAE Standard 15 Compliance . . . . . . 11

Unit Shipment . . . . . . . . . . . . . . . . . . . . . . . 11

General Information . . . . . . . . . . . . . . . . . . 11

Installat ion Requirements and Contractor Re-

sponsibilities . . . . . . . . . . . . . . . . . . . . . . . . . 11

Storage Requirements . . . . . . . . . . . . . . . . 13

Unit Components . . . . . . . . . . . . . . . . . . . . . 14

Unit Clearances and Weights . . . . . . . . . . . . 15

Recommended Unit Clearances . . . . . . . . 15

General Weights . . . . . . . . . . . . . . . . . . . . . . 16

Installation: Mechanical . . . . . . . . . . . . . . . . . 17

Operating Environment . . . . . . . . . . . . . . . 17

Foundati on Requirements . . . . . . . . . . . . . 17

Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Standard Chiller Lift . . . . . . . . . . . . . . . . . 17

Special Lift Requirements . . . . . . . . . . . . 18

Unit Isolation . . . . . . . . . . . . . . . . . . . . . . . . 19

Isolatio n Pads . . . . . . . . . . . . . . . . . . . . . . . . 19

Spring Isolators . . . . . . . . . . . . . . . . . . . . . . 19

Leveling the Un it . . . . . . . . . . . . . . . . . . . . . 20

Installation: Water Piping . . . . . . . . . . . . . . . . 22

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Water Treatment . . . . . . . . . . . . . . . . . . . . . 22

Pressure Gauges . . . . . . . . . . . . . . . . . . . . . 22

Valves—Drains and Vents . . . . . . . . . . . . . 22

Strainers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Required Flow-Sensing Devices . . . . . . . . 22

Evaporator and Condenser Water Piping .25

Water Piping Connections . . . . . . . . . . . . . .26

Waterbo x Locations . . . . . . . . . . . . . . . . . . .26

Grooved Pipe Coupling . . . . . . . . . . . . . . . . .27

Flange-Connect ion Adapters . . . . . . . . . . . .27

Victaulic Gasket Instal lation . . . . . . . . . . . . .28

Bolt-Tig htening Sequen ce for Water Pipin g

Connections . . . . . . . . . . . . . . . . . . . . . . . . . .29

Flanges with 8 or 12 Bolts . . . . . . . . . . . . .29

Flanges with 16 or 20 Bolts . . . . . . . . . . . .29

Pressure Testin g Waterside Piping . . . . . . .29

Vent Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Refrigerant Vent Line . . . . . . . . . . . . . . . . . .30

General Requirements . . . . . . . . . . . . . . . .30

Purge Discharge . . . . . . . . . . . . . . . . . . . . .30

Vent Line Materials . . . . . . . . . . . . . . . . . .30

Vent Line Sizing . . . . . . . . . . . . . . . . . . . . .30

Vent Line In stallation . . . . . . . . . . . . . . . . . . .31

Trane Ruptu reGuard . . . . . . . . . . . . . . . . . . .34

General Information . . . . . . . . . . . . . . . . . .34

Connection to External Vent Line and Drip

Leg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Insulati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Unit In sulation Requirements . . . . . . . . . . .39

Insulation Thickness Requirements . . . . . .39

Installation: Controls . . . . . . . . . . . . . . . . . . . . .41

UC800 Specifications . . . . . . . . . . . . . . . . . .41

Wiring and Port Descriptions . . . . . . . . . .41

Communication Interfaces . . . . . . . . . . . .42

Rotary Switches . . . . . . . . . . . . . . . . . . . . .42

LED Des cription and Operation . . . . . . . .42

Installing the Tracer AdaptiView Display . .44
Adjusting the Tracer AdaptiView Display Arm

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Electrical Requirements . . . . . . . . . . . . . . . . . .46

Installation Requ irements . . . . . . . . . . . . . .46

Electrical Requirements . . . . . . . . . . . . . . . .46

Trane-Supp lied Remote Starter Wiring . . .48

Customer-Supplied Remote Starter Wiring 49

CVHH-SVX001A-EN 5

Table of Contents

Current Transformer and Potential Transform-

er Wire Sizing . . . . . . . . . . . . . . . . . . . . . . . . 50

Power Supp ly Wiring . . . . . . . . . . . . . . . . . . . 51

Three-Phase Power . . . . . . . . . . . . . . . . . 51

Circuit Breakers and Fused Disconnect s . 52

CE for Control Power Transformer (CP TR ) Op-

tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

CE for Starter or Drive . . . . . . . . . . . . . . . 52

Contro l Power Transformer (CPTR) Option

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Power Factor Correction Capacitors (Optional)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Intercon necting Wiring . . . . . . . . . . . . . . . . 56

Starter t o Motor Wiring (Remote-Mount ed

Starters Only) . . . . . . . . . . . . . . . . . . . . . . . . 57

Ground Wire Terminal Lugs . . . . . . . . . . 57

Terminal Clamps . . . . . . . . . . . . . . . . . . . 58

Wire Terminal Lugs . . . . . . . . . . . . . . . . . 58

Bus Bars . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Starter t o Control Panel Wiring . . . . . . . . . 59

Medium Voltage Installation . . . . . . . . . . . . . 60

Medium Voltage Motor . . . . . . . . . . . . . . 60

Motor Terminal Box . . . . . . . . . . . . . . . . . 60

Motor Supply Wiring . . . . . . . . . . . . . . . . . . 61

System Control Circuit Wiring (Field Wiring)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Water Pump Int erlock Circuits and Flow

Switch Input . . . . . . . . . . . . . . . . . . . . . . . 64

Temperature Sensor Circuits . . . . . . . . . . . 65

Optional Control and Output Circuits . . . 66
Optional Tracer Communication Interface 66

Unit St art-up/Commissioning . . . . . . . . . . 66

Starter Module Configuration . . . . . . . . . . 66

Schematic Wiring Drawings . . . . . . . . . . . . 66

Operating Princip les . . . . . . . . . . . . . . . . . . . . 67

General Requirements . . . . . . . . . . . . . . . . 67

Cooling Cycle . . . . . . . . . . . . . . . . . . . . . . . . 67

Oil and Refrigerant Pump . . . . . . . . . . . . . . 68

Motor Cooling System . . . . . . . . . . . . . . . . 70

Tracer Adap tiView Display . . . . . . . . . . . . . 70

RuptureGuard . . . . . . . . . . . . . . . . . . . . . . . . 71

EarthWise Purge . . . . . . . . . . . . . . . . . . . . . . 71

How a Purge System Works . . . . . . . . . . .71

Start-up and Shut-down . . . . . . . . . . . . . . . . . .75

Chiller Sequence of Operation . . . . . . . . . .75

Software Operation Overview Diagram . .75
Start-up Se quence of Operation—Wye-Delta

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Power Up Diagram . . . . . . . . . . . . . . . . . . .78

Ice Machine Control . . . . . . . . . . . . . . . . . . .78

Free Cooling Cycle . . . . . . . . . . . . . . . . . . . . .80

Hot Water Control . . . . . . . . . . . . . . . . . . . . .80

Control Panel Devices and Unit-Mou nted De-

vices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

Unit Control Panel . . . . . . . . . . . . . . . . . . .81

User-Defined Language Support . . . . . . .81

Unit St art-up and Shut-down Procedures .81

Daily Unit Start-up . . . . . . . . . . . . . . . . . . .82

Seasonal Unit Start-up . . . . . . . . . . . . . . .82

Daily Unit Shut-down . . . . . . . . . . . . . . . .82

EarthWise Purge Sequence of Operations 83

Purge Operating Modes . . . . . . . . . . . . . .83

Air Removal . . . . . . . . . . . . . . . . . . . . . . . .87

Pump-out Operating Sequence . . . . . . . .87

Carbon Tank and Regeneration Subsystem

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Recommended Maintenance . . . . . . . . . . . . .91

Record Keeping Forms . . . . . . . . . . . . . . .91

Normal Operation . . . . . . . . . . . . . . . . . . .92

Compresso r Oil Change . . . . . . . . . . . . . . . .93

Leak Checking Based on Purge Pump Out

Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

RuptureGu ard Maintenance . . . . . . . . . . . . .94

EarthWise Purge Maintenance . . . . . . . . . .94

Weekly Maintenance . . . . . . . . . . . . . . . . .94

Semi-Annual Maintenance . . . . . . . . . . . .95

Annual Maintenance . . . . . . . . . . . . . . . . .95

Inspecting t he Moisture Indicator . . . . . . .95

Maintaining the Moisture-Indicating Sight

Glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Removing Air After Servicing the Chiller .95
Recommended System Maintenance . . .96

6 CVHH-SVX001A-EN

Waterbox Removal and Installation . . . . . . 98

Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . 99

Torque Requirements . . . . . . . . . . . . . . . 99

Bolt-Tightening Sequence for Waterboxes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Evaporator Waterbox Covers . . . . . . . . 101

Condenser Waterbox Covers . . . . . . . . 101

Heat Recovery Condenser Waterbox Covers

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Forms and Check Sheets . . . . . . . . . . . . . . . 102

Table of Contents

CVHH-SVX001A-EN 7

Unit and Compressor Nameplates

Unit Nameplate

The unit nameplate is located on the left side of the control
panel. A typical unit nameplate is illustrated in
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 li terature

Serial Number. The unit serial number provides the

specific chiller identity. Always provide this serial number
when call ing 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 requ ired when
ordering replacements parts or requesting service.

No te: 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.

Figure 1

Figure 1. Typical unit nameplate (CDHF shown; CVHH

is similar)

8 CVHH-SVX001A-EN

Compressor Nameplate

TRANE MADE IN USA X39002458010B

MODEL NO.

SALES ORDERSERIAL NO.

The compressor assembly has a separate model number
which is required to identify internal and external
compressor parts. The model number begins with
“ CCHH” and the nameplate is located on the foot of the
volute.

Figure 2. Compressor nameplate

No te: The serial number space on the compressor

nameplate will be intentio nally left blank.

Unit and Compressor Nameplates

CVHH-SVX001A-EN 9

Model Number Descriptions

CVHH CenTraVac
Chiller Description

Digit 1, 2 — Simplex
CenTraVac™ Chiller

Digit 3 — Drive
Digit 4 — Development

Sequence
Digit 5, 6, 7 — Nominal Total

Compressor Tonnage
Digit 8 — Unit M otor Voltage
Digit 9 — Unit Type
Digit 10, 11 — Design Sequence
Digit 12 — M anufacturing

Location
Digit 13 — Hot Gas Bypass

(HGB)
Digit 14 — Starter Type
Digit 15 — Control Enclosure
Digit 16 — Evaporator Shell Size
Digit 17 — Evaporator Tube

Bundle
Digit 18 — Evaporator Tubes
Digit 19 — Evaporator Waterbox
Digit 20 — Condenser Shell Size
Digit 21 — Condenser Tube

Bundle
Digit 22 — Condenser Tubes
Digit 23 — Condenser

Waterboxes
Digit 24 — Auxiliary Condenser

Size and Waterboxes
Digit 25 — Evapora tor Orifice

Size
Digit 26 — Economizer Orifice

Size
Digit 27 — Condenser Orifice

Size
Digit 28 — Unit Option
Digit 29 — Control: Enhanced

Protection
Digit 30 — Control: Extended

Operation
Digit 31 — Tracer™

Communication Interface
Digit 32 — Special Options

Digit 33 — Water Flow Control
Digit 34 — Chilled Water Reset
Digit 35 — Control: Heat

Recovery/Auxiliary Temperature
Sensors

Digit 36 — Industrial Chiller
Package (INDP)

Digit 37 — Control Pow er
Transformer (CPTR)

Digit 38 — Thermal Dispersion
Water Flow Proving

Digit 39 — Compressor M otor
Frame Size

CCHH Centrifugal
Compressor
Description

The compressor assembly has a
separate model number which is
required to identify internal and
exter nal compressor parts. The
model number begins with “ CCHH”
and the nameplate is located on the
foot of the volute.

Digit 1, 2 — Unit Function
Digit 3 — Drive
Digit 4 — Development

Sequence
Digit 5, 6, 7 — Nomin al Total

Compressor Tonnage
Digit 8 — Compressor M otor

Vol t age
Digit 9 — Compressor M otor

Frame Size
Digit 10, 11 — Design Sequence
Digit 12 — Manufacturing

Location
Digit 13, 14, 15, 16 —

Compressor M otor Power (kW)
Digit 17, 18, 19, 20 — First Stage

Compressor Impeller (IMPI)
Digit 21, 22, 23, 24 — Second

Stage Compressor Impeller
(IM P2)

Digit 25, 26, 27, 28 — Third
Stage Compressor Impeller
(IM P3)

Digit 29 — Motor and Terminal
Board Configuration

Digit 30 — Resistent
Temperature Detector

10 CVHH-SVX001A-EN

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 national, state, or local 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 t hat can be
activated by the refrigerant monitor.

• The purge discharge and the rupture disk must be
properly piped to the outdo ors.

• If required by local or other codes, a self-contained
breathing apparatus should be available in close
proximit y to the equip ment room.

For the USA, refer to the latest copy of ASHRAE
Standard 15 for specific guidelines. Trane assumes no
responsibility for any economic, health, or environmental
issues that may result from an equipment room’s design
or function.

Unit Shipment

Inspect u nit while it is still on the truck for an y shipping
damage. The chiller ships shrink-wrapped in a 0.254 mm
(0.010-in.) recyclable film prot ective covering. Do not
remove shrink-wrap for inspection! Inspect for damage to
the shrin k-wrap and determine if physical damage has
occurred.

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

drain holes are covered or plugged to prevent
contamination during shipment and h andling.

p. 14

shows an illustration of a typical unit and its
components. As soon as the unit arrives at the job site,
inspect it thoroughly for damage and material shortages.
In addition:

1 . V erify the hermetic integrity of the unit by checking the

chiller pressure for an indication of holding charge
pressure.

2. To prevent damaging moisture from entering the unit

and causing corrosion, each chiller is pressurized with

20.7 to 34.5 kPag (3 to 5 psig) of dry nitrogen before
shipment.

Figure 3,

Note: The holding charge should register approximately

34.5 kPag (5 psig) at 22.2°C (72°F). P lace a gauge on
the access valve provided (indicated by arrow and
circle in the preceding figure) on the refrigerant
pump discharge line to verify the holding charge.
This access valve is located on the front o f the oil
tank, which is at the right rear corner of the chiller.
If the charge has escaped, contact your local Trane
sales office for instructions.

3. The loose parts box and isolator pads ship on top of the
control panel box.

4. Check the oil sump sight glasses to verify that the sump
was factory-charged with 79.5 L (21 gallons) of oil. The
oil level should be vi sible to about halfway in the top
sight glass. If no oil level is visible, contact your local
Trane sales office.

General Information

Regulations regarding waste handling are constantly
changing. T o ensure that personnel are in compliance with
the latest federal, state and local regulations, contact your
local waste management office for the proper procedures
on handling, disposal, transporting and storage of oil, oil
filters, refrigerant filters, and filter dryer cores.

Installation Requirements and
Contractor Responsibilities

A list of the contractor responsibilities typically associated
with the unit installation process is provided.

CVHH-SVX001A-EN 11

Pre-Installation

WARNING

Combustible Material!

F ailur e to follo w this ins truc tion could r esult in death or
serious injury or equipment damage. Shrink-w rap is a
combustible material. Avoid open flames and hot
sparks.

Note: The chiller should remain within its protective

shrink-wrap covering during storage.

Type o f
Requirem ent

Found ation • Meet foundation requirem ents
Rigging • Safety chains

Disassembly/ Reassembly
(as required)

Isolatio n • Isolation pads or spring

Electrical • Circuit breakers or fusible

Water piping • Flow sensing devices

Relief • Rupture disk assembly

Insulation • Insulation (optional) • Insulation

Water Piping Connection
Components

Other M aterials • Material and equipment to perform leak testing

Trane S upplied
Trane I nstalled

• Trane will per form or have
direct on-site supervision of
the disassembly and
reassembly work (contact
your local Trane office for
pricing)

disconnects (op tional)

• Unit m ounted starter
(optional)

• PFCCs (optional)

• RuptureGuard™ (optional)

Flanged (optional)

• Welded on flange for

2068.4 kPag (300 psig)
waterboxes

Trane Supplied
Field I nstalled

isolators

• Jumper bars

• Temperature sensor
(optional outdoor air)

• Flow switches (m ay be
field supplied)

• Remote-mounted starter
(optional)

(may be field supplied)

Flanged ( optional)

• Victaulic

®

adapter for 1034 .2 kPag
(150 psig) waterboxes

to flang e

Field Supplied
Field I nstalled

• Clevis c onnectors

• Lifting beam

• Isolation pads or s pring isolators

• Circuit breakers or fusible disconnects (opti onal)

• Electrical connections to unit m ounted starter
(optional)

• Electrical connections to remote mo unted starter
(optional)

• Wiring sizes per submittal and NEC or local codes

• PFCCs (rem ote mounted star t er optional only)

• Terminal lugs

• Ground connection(s)

• Jumper bars

• BAS wiring (optional)

• IPC wiring (AFD and remote-m ounted starters only)

• Control voltage wiring (AFD and rem ote- mounted
starters only)

• Oil pum p i nter lock wiring (AFD and remote m ounted
starters only)

• High con denser pressure interlock wiring (AFD and
remote mounted starters only)

• Chilled water pump contactor and wiri ng including
interlock

• Condenser water pump contactor and wiring including
interlock

• Option relays and wiring

• Taps for flow sensing devices

• Ta ps for therm ometers 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 val ves ( for waterboxes as required)

• Vent line and flex ible conne ctor and vent line from
ruptu re disk to atmosphere

• Chiller feet insulation

Victaulic

• Victaulic coupling for 1034.2 kPag ( 150 psig) and

2068.4 kPag (300 psig) waterboxes

• Fasteners for flanged-type connections (optional)

• Dry nitrogen (55.2 kPag [ 8 psig] maximum per
machine as needed)

12 CVHH-SVX001A-EN

Pre-Installation

Type o f
Requirem ent

“CenTraVac™ Installation
Completion Check Sheet
and Request for Trane
Service”

(CTV-ADF001-EN; refer to

“Forms and Check Sheets,”
p. 102

)

Chiller start-up
com missionin g

(a) Start- up m ust 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.

( a)

Trane S upplied
Trane I nstalled

• Trane, or an agent of Trane
specifically authori zed to
perform start-up of Trane
pro ducts

®

Trane Supplied
Field I nstalled

Field Supplied
Field I nstalled

• To be completed by installing contractor prior to
contacting Trane for start-up

Storage Requirements

NOTICE:

Ins ulation Damage!

Do not expose unit to direct sunlight as it could result
in damage to factory-installed insulation.

Less than 1 m onth 1– 6 months Greater than 6 m onths

Location requirem ents:

• solid foundation

• vibration free

• dry

• temperature range -40°C to 70°C
(-40°F to 158°F)

• Do not rem ove any plastic coverings • Do not remove any plastic coverings • Do not remove any plastic coverings

• Do not cha rge the chiller with refrigerant

• If additional refrigerant is on site, follow
manufactures storage require m ents

• Verify dry nitrogen pressure using gauge
located on the evaporator shell reads

20.7 to 34.5 kPag ( 3 to 5 psig)

• Notify the l ocal Trane office if charge has
escaped

• Do not operate purge unit • Do not operate purge unit • Do not operate purge unit

Note: Chillers stored 5 years or longer should be inspected every 5 years by a qualified service organ izat ion for leaks.

(a) If protective plastic coverings need to be removed for access and/or service, contact your local Trane office.

Location requirements :

• solid foundation

• vibration free

• dry

• temperature range -40°C t o 70°C
(-40°F to 158°F)

• Do not cha rge the chiller with refrigerant

• If additiona l refrigerant is on site, follow
manufactures storage requirements

• Verify dry nitrogen pressure using gauge
located on the evaporator shell reads

20.7 to 34.5 kPag ( 3 to 5 psig)

• Notify the local Trane office if ch arge has
escaped

• Verify waterbox and tube bundles are
clean and dry

Location requ irements:

• solid foundation

• vibration free

• dry

• temperature range -40°C to 70°C
(-40°F to 158°F)

• Do not charge the chiller with refrigeran t

• If additiona l refr igerant is on site, follow
manufactures storage requirements

• Verify dry nitrogen pressure u sing gauge located
on the evaporator shell reads 20.7 to 34.5 kPag
(3 to 5 psig)

• Notify the local T rane office if charge has escaped

• Verify waterbo x and tube bundles are clean and
dry

• Conduct an oil analysis and verify no oil
breakdown

• Repeat yearly

• Replace oil if breakdown has occurred

• If no oil analysis pro gram has been followed,
replac e oil prior to start up

(a)

CVHH-SVX001A-EN 13

Pre-Installation

1

2

3

4

0

-

0

6

7

5

9

8

Unit Components

No te: The control p a nel side of the unit is always

designated as the front side of the unit.

Figure 3. Typical Simplex CVHH CenTraVac chiller

1. Suction Elbow

2. Comp ressor

3. Terminal Box

4. Control Panel

5. Condenser

6. Motor Housing

7. Economizer

8. Oil Tank Assembly

9. Purge

10. Evapo rat or

11. Display Panel

14 CVHH-SVX001A-EN

Unit Clearances and Weights

Optional unit
mounted
starter

Condenser

Evaporator

Econom izer

Motor

B

A

E

Right hand tube pull shown,
apply tube pull clearance
dimension to left end for
left hand tube pull.

These dim ensions per
NEC Article 110

46 cm (18 in.)

C

D

92 cm (3 ft)

Recommended Unit Clearances

Adequate clearances around and above the chiller are
required to allow sufficient access for service and
maintenance operations. Specific unit clearan ce
requirements are indicated in the submittal package
provided for y our unit.

• Do NOT install piping or conduit above the compressor
motor assembly or behind the suction elbow of the
unit.

Figure 4. Clearance requirements

• Minimum vertical clearance above the unit is 92 cm
(3 feet).

• Use a housekeeping pad to provide bet ter service
clearances; refer to submittal for more infor mation.

Per NEC Article 110: Unit mounted starters from 0–600V
require a 107 cm (42 inch) clearance, 601–2500V require a
122 cm (48 inch) clearance, and 2501–9000V require a
152 cm (60 inch) clearance. Refer to NEC and local
electrical codes for starter and control panel clearance
requirements.

CVHH-SVX001A-EN 15

Unit Clearances and Weights

Table 1. Clearance requirements

ABCDE

Shell Combo

100M/ 100M 213 84 422 166 1057 416 30 12 310 122

100M/ 10HM 213 84 422 166 1057 416 79 31 300 118

100L/100L 213 84 422 186 1161 457 30 12 310 122

130M/ 130M 224 88 422 166 1067 420 74 29 277 109

130M/ 13HM 224 88 422 166 1067 420 79 31 312 123

160M/ 200M 244 96 422 166 1087 428 94 37 285 112

160M/ 20HM 244 96 422 166 1087 428 91 36 325 128

200L/200L 272 107 472 186 1217 479 86 34 282 111
200L/20HL 272 107 472 186 1217 479 94 37 333 131
200L/220L 272 107 472 186 1219 480 94 37 305 120
220L/220L 305 120 472 186 1252 493 97 38 300 118
220L/22HL 305 120 472 186 1250 492 107 42 363 143

(a) All dimensions are approximate; refer to the unit submittal package for exact dimensions for your unit .

cm in. cm in. cm in. cm in. cm in.

General Weights

The unit weight information provided in
be used f or general information purposes only. Trane
does not recommend using this weight information for
considerations relative to chiller handling. The large
number of variances between chiller selections drives
vari ances in chiller weights that are not recognized in
this table. For specific we ights for your chiller, refer to
your submittal package.

The values in
the following:

• TECU 0.028-i n. (0.71 mm) tube wall.

• 1034.2 kPag (150 psig) non-mari ne waterboxes.

Table 2 representing chiller weights include

(a)

Tab le 2 should

• Chillers with starter weights i nclude the weight of

the h eaviest possible starter.

• Heaviest possible bundle and heaviest possible

motor combination for the application family
chiller.

The values in

Table 2 representing chiller weights do NOT

include the following options:

• INDP (Industrial Contr ol Panel) option—add 23 kg

(50 lb)

• CPTR (Control Panel Transformer) option—add

127 kg (280 lb)

• SMP (Supplemental Motor P rotection) option—add

230 kg (500 lb)

• Oper atin g weights in clude the largest possible
refrigerant charge.

Table 2. Unit weights

Weight w it hout Starters Weight w ith Start ers

Operat ing Shipping Operat ing Shipping

MODEL NTON Hz EVSZ CDSZ kg lb kg lb kg lb kg lb

CVHH 900–1200 60 100M 100M 19748 43538 17218 37959 20044 44190 17514 38611

900–1200 60 100L 100L 20562 45331 17802 39246 20858 45983 18097 39898
900–1200 60 100M 10HM 21946 48382 19226 42386 22241 49034 19522 43038
900–1200 60 130M 130M 22193 48927 19019 41929 22489 49579 19314 42581
900–1200 60 130M 13HM 24873 54836 21522 47447 25169 55488 21817 48099
900–1200 60 160M 200M 25523 56269 21503 47405 25819 56921 21798 48057
900–1200 60 160M 20HM 28516 62868 24353 53690 28812 63520 24649 54342
900–1200 60 200L 220L 28443 62707 23780 52425 28739 63359 24075 53077

900–1200 60 220L 220L 30193 66564 25080 55291 30489 67216 25375 55943
1700–1500 60 200L 200L 27480 60583 23188 51120 27776 61235 23483 51772
1700–1500 60 200L 20HL 30683 67644 26248 57867 30979 68296 26544 58519
1700–1500 60 220L 220L 30588 67434 25474 56161 30883 68086 25770 56813
1700–1500 60 220L 22HL 34497 76053 29234 64451 34793 76705 29530 65103

1550 50 200L 200L 28456 62735 24164 53272 28752 63387 24459 53924
1550 50 200L 20HL 31659 69796 27224 60019 31955 70448 27520 60671
1550 50 220L 220L 31564 69586 26450 58313 31859 70238 26746 58965
1550 50 220L 22HL 35473 78205 30211 66603 35769 78857 30506 67255

16 CVHH-SVX001A-EN

Installation: Mechanical

Operating Environment

Important:

• The stan dard chille r is designed for indoor use only

and as such has NEMA Type 1 or IP 20 enclosures.

• For chillers in unheated equipment rooms, contact
your local Trane service agency for methods to ensure
that the oil temperature is maintained suitable for
proper operation of the chiller.

T o ensure that electrical components operate properly, do
not locate the chiller in an area exposed to dust, dirt,
corrosive fumes, or excessive heat and humidity. The
ambient temperature range for chiller operation is 1.1°C to
40°C (34°F to 104°F).

NOTICE:

E quipment Failure!

Unit operating at ambient temperatures exceeding
40°C (104°F) could result in starter component damage
due to the panel’s inabili ty to dissipate heat adequately .
If any of these adverse operating conditions are
present, take necessary action to improve the
equipment room environment.

Foundation Requirements

Chiller mounting surface must be:

• rigid non-warping mounting pads or a concrete

foundation.

• able to support the chiller at its full operating weight

(including completed piping, and full operating
charges of refrigerant, oil and water.)

F or proper unit operation, the chiller must be level within

1.6 mm (1/16 in.) over its length and width when set into

place on the mounting surface.
approximate weights for various chiller sizes and options.

Note: For specific weigh t information, refer to the unit

submittal package.

Important: Tran e will not assume responsibility for

equipment problems resulting from an
improperly designed or constructed
fou ndation.

Table 2, p . 16 shows

Rigging

Lifting is the recommended method for moving chillers.
Suggested lifting arrangements for standard units are
described in

Note: The lifting beam used for Simplex units must be at

“ Standard Chiller Lift,” p. 17.

least 4.572 meters (15 feet) long.

WARNING

Heavy Objects!

Failure to properly lift unit could result in death or
serious injury, or equipment or property-only damage.
Do not use cables (chains or slings) except as s hown in

Figure 5, p. 18. Each of the cables (chains or slings)

used to lift the unit must be capable of supporting the
entire weight of the unit. Lifting cables (chains or
slings) m ay not be of the same length. Adjust as
necessary for even unit lift.

WARNING

Improper Unit Lift!

Failure to properly lift unit could result in death or
serious injury, or equipment or property-only damage.

• T es t lift unit approximately 61 c m (24 inches ) to verify
proper center of gravity lift point. T o a v oi d dropping
of unit, reposition lifting point if unit is not level.

• Do not lift chiller utilizing waterbox lifting lug.
Waterbox lifting lug is to be used only f o r removing
waterbox from chiller.

• Do not lift chiller utilizing elbow lifting tab. Elbow
lifting tab and approved clevis are used when
removing elbow from chiller.

NOTICE:

W iring Damage!

Damage to unit wiring could result in equipment
failure. Care must be t aken during rigging, assembly
and disassembly to avoid damaging unit wiring.

Standard Chiller Lift

1. Insert clevis connections at the points indicated in

Figure 5, p. 18. A 63.5 mm (2.5 in.) diameter lifting hole

is provided at each of these points.

2. Attach the lifting chains or cables.

3. Once the lifting cables are in place, attach a safety chain
or cable between the first-stage casing of the
compressor and the lifting beam.

Important: There should not be tension on this safety

cable; the cable is used only to prevent the
unit from rolling during th e lift.

4. Position isolator pads or spring isolators beneath the
chiller feet (refer to
instructions).

Note: Follow instructions provided by the spring

isolator man ufacturer, being careful to not
damage isolator adjustment bo lt.

“ Unit Isolation,” p. 19 for

CVHH-SVX001A-EN 17

Installation: Mechanical

Safety
chain or
cable

Jack slots

4.572 meters
(15 feet)
minimum
effective length

5. Once the isolators are in place, lower the chiller—
working from end to end—in small increments to
mai ntain stability.

6. When lift is complete, detach the clevis co nnection s
and safety chain.

Figure 5. Typical rigging arrangements for Simplex

units

Spec ial Lift Requirements

NOTICE:

Oil Loss!

F ailure to prevent oil migration out of the oil tank could
res ult in equipment failure or proper ty-only damage. To
prevent oil migration out of the oil tank during lifting
procedures, remove the oil from the oil tank if the unit
will be lifted at any angle greater than 15° from
horizontal end-to-end. If oil is allowed to run out of the
oil tank into other areas of the chiller, it will be
extremely difficult to return the oil to the oil tank even
during operation.

NOTICE:

Equipment Damage!

Moving the chiller using a fork lift could result in
equipment or property-only damage. Do not use a fork
lift to move the chiller!

NOTICE:

Compressor Alig nment!

Failure to preserve compressor alignment could result
in equipment or property-only damage. Lifting the
compressor/motor assembly from the shells without
factory-installed doweling in the compressor casting
flanges could result in misalignment of the compres sor
castings.

If the chiller cannot be moved using a standard chiller lift,
consider the following:

• When job site conditions require rigging of the chiller
at an angle greater than 45° from horizontal (end-to­end), the unit may require removal of the compressor.
Contact Trane or an agent of Trane specifica lly
authorized to perform start-up and warranty of T rane
products reg arding the disassembly and reassembly
work. For more information, refer to

Information,” p. 4

Note: Disassembly and reassembly work includes

dowel-pinning the compressor and removing it
from the unit. Contact Trane or an agent of
Trane specifically authorized to perform start­up and warranty of T rane
rigging instructions. Do NOT attempt to rotate
the chiller onto its side.

• When lifti ng the chiller is either i mpractical o r
undesirable, attach cables or chains to the jacking slots
shown in
across a smooth surface. Should the chiller be on a
shippin g skid, it is not necessary to remove the 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

Figure 5, p. 18; th en push or pull the unit

.

“ Factory Warranty

®

products for specific

®

18 CVHH-SVX001A-EN

Installation: Mechanical

228.6 mm
(9 in.)

457.2 mm
(18 in.)

9.525 mm
(3/ 8 in.)

Condenser

Evaporator

Length

2

5

1

4

6

3

Width

I solator Configuration 1

Origin:
Right front corner of
evap right front foot

Condenser

Evaporator

Length

2

5

1

4

6

3

Evap
Width

Width

I solator Configuration 2

location, contact T rane. F or more information, refer to

“ Factory Warranty Information,” p. 4.

Unit Isolation

T o minimize sound and vibration transmission through the
bui lding structure, and to ensure proper weigh t
distribution over the mount ing surface, always install
isolation pads or spring is olators under the chiller feet.

No te: Isolation pads (see

Figure 6) are provided with each

chiller unless spring isolators are specified on the
sales order.

Specific isolator loading da ta is provided in the unit
submittal package. If necessary, contact your local Trane
sales office for further information.

Important: When determining placement of isolation

pads or spring isolators, remember that the
control panel side of the unit is always
desig nated as the uni t front.

Isolation Pads

When the unit is ready for final placement, position
isolation pads (457.2-mm sides) end for end under the full
length of the chiller leg. The pads measure 228.6 mm x

457.2 mm (9 in. × 18 in.) and on some units there may be
small gaps between pads. Pads are provided to cover
entire foot.

Figure 6. Is olation pad and dimensions

Remember that the chiller must be level within 1.6 mm
(1/16 in.) over its length and width after it is lowered onto
the isolation pads. In addition, all piping connected to the
chiller must be properly isolated and supported so that it
does not place any stress on the unit.

Spring Isolators

Spring isolators should be considered whenever chiller

installation is planned for an upper story location. Base
isolator placement is shown in

Table 3.

CVHH-SVX001A-EN 19

Figure 7; also refer to

Figure 7. Isolation spring placement by shell size,

evaporator and condenser lengt h

Table 3. Isolation spring placement, cm (in.)

Origin

to

to

Center

of

Middle

Pad

153.7

(60.5)

171.5

(67.5)

153.7

(60.5)

171.5

(67.5)

138.4

(54.5)

153.7

(60.5)

138.4

(54.5)

N/A

N/A

N/A

N/A

N/A

EVSZ CDSZ W idt h

200L 200L

220L 220L

200L 20HL

220L 22HL

160M 20HM

200L 220L

160M 200M

100M 100M

100L 100L

130M 130M

100M 10HM

130M 13HM

285.0

(112.2)

303.3

(119.4)

336.0

(132.3)

361.0

(142.5)

323.3

(127.3)

285.2

(112.3)

270.3

(106.4)

264.4

(104.1)

264.4

(104.1)

277.6

(109.3)

300.2

(118.2)

313.4

(123.4)

Evap

Width Length

170.2

457.2

(67)

(180)

188.0

457.2

(74)

(180)

170.2

457.2

(67)

(180)

188.0

457.2

(74)

(180)

154.9

406.4

(61)

(160)

170.2

457.2

(67)

(180)

154.9

406.4

(61)

(160)

406.4

N/A

(160)

457.2

N/A

(180)

406.4

N/A

(160)

406.4

N/A

(160)

406.4

N/A

(160)

I solator

Config

2

2

2

2

2

2

2

1

1

1

1

1

Origin

Center

of Rear

Pad

268.5

(105.7)

286.8

(112.9)

319.5

(125.8)

345.4
(136)

306.8

(120.8)

268.7

(105.8)

253.7

(99.9)

247.9

(97.6)

247.9

(97.6)

261.1

(102.8)

283.7

(111.7)

296.9

(116.9)

Spring isolators typically ship assembled and ready for
installat ion. To install and adjust the isolators properly,
follow the instructions given.

Installation: Mechanical

Side View of Unit End View of Unit

Outside edge
of tube sheet

Center tube
sheet
support leg

Center of
isolator
spring

Note: The spring isolator must be cent ered

in relation to the tube sheet. Do not
align the isolator with the flat part of
the chiller foot since the tube sheet is
often off center

Note: The length of the

isolator should
be parallel to the
leg.

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 7. Ensure that each isolator is centered in

relation to the tube sheet.

No te: Spring isolators shipped with the chiller may

not be identical. Compare the data provided in
the unit submittal package to determine proper
isolator placement.

2. Set the isolators on the sub-base; shim as necessary to
provide a flat, level surface at the same elevation for
the end supports.

Important: Support the full underside of the isolator

base plate; do NOT straddle gaps or small
shims.

3. If required, bolt the isolators to the floor through the
slots provided, or cement the pads.

Note: Fastening the isolators to the floor is not

necessary unless specified.

4. If the chiller must be fastened to the isolators, insert
capscrews through the chiller base and into holes
drilled and tapped in the upper housing o f each
isolator.

Important: Do NOT allow the screws to protrude below

the underside of the isolator upper housing,
or interfere with the adjusting bolts. An
alternative method of fasteni ng the chiller
to the isolators is to ceme nt the neoprene
pads.

5. Set the chiller on the isolat ors; refer to

Chiller Lift,” p. 17

. The we ight of the chiller will force
down the upper housing of each isolator, and could
cause it to rest on the isolator’s lower housing (refer to

Figure 8).

“ Standard

.

Figure 8. Chiller foot and isolator orientation

6. Check the clearance on each isolator. If this dimension
is less than 6.35 mm (1/4 in.) on an y iso lator , use a
wrench to turn the adjusting bolt one complete
revolution upward.

Note: When the load is applied to the isolators (

Step 5),

the top plate of each isola tor moves down to
compress the springs until either the springs
support the load or the top plate rests on the
botto m housing of the isolator. If the springs are
supporting the load, screwing down on the
adjusting bolt (

Step 7) will raise the chiller.

7. Turn the adjusting bolt on each of th e remaining
isolators to obtain the required minimum clearance of

6.35 mm (1/4 in.).

8. Once the minimum required clearance is obtained on
each of the isolators, level the chil ler by turning the
adjusting bolt on each of the isolators on the low side
of the unit. Work from one isol ator to the next.

Important: The chiller must be level to within 1.6mm (1/

16 in.) over its length and width, and the
clearance of each isolator must be at least

6.35 mm (1/4 in.).

Leveling the Unit

20 CVHH-SVX001A-EN

The chiller must be set level within 1.6 mm (1/16 in.).
1 . Measure and make a punch mark an equal distance up

from the bottom of each foot of the chiller.

Installation: Mechanical

2

1

2. Suspend a clear plastic tube along the length of the
chiller as shown in the following figure.

3. Fill the tube with water u ntil the level aligns with the
punch mark at one end of the chiller.

4. Check the water level at the opposite mark. If the water
level does not align with the punch mark, use full

Figure 9.

Note: Use of a laser level is an acceptable alternative

method to level the unit.

Important: Immediately report any unit damage

incu rr ed during handling or installation at
the job site to the Trane sales office.

length shims to raise one end of the chiller until the
water level at each end of the tube aligns with the
punch mar ks at both ends of the chiller.

5. Once the unit is level across its length, repeat
through

Step 3 to level the unit across its width.

Step 1

CVHH-SVX001A-EN 21

Installation: Water Piping

Overview

The following water piping circuits must be installed and
connected to the chiller:

• Pipe the evaporato r in to the chilled water circuit.

• Pipe the condenser into the cooling tower water circuit.

• Optional: A heat-recovery condenser water circuit.

• Optional: An auxiliary condenser water circuit.

No te: Piping must be arranged and supported to avoid

stress on the equipment. It is strongly
recommended that the piping contractor does not
run pipe closer than 0.91 m (3 feet) minimum to the
equipment. This will allow for proper fit upon
arrival of the unit at the job site. Any adjustment
that is necessary can be made to the piping at that
time. Expenses that result from a failure to follow
this recommendation will not be pai d by Trane.

Piping suggestions for each of the water circuits listed
above are ou tli ned in

Piping,” p. 25

installation of field supplied piping compon ents (e.g.,
valves, flow switches, etc.) common to most chiller water
circuits are listed below.

. General recommendations for the

“ Evaporator and Condenser Water

Water Treatment

The use of untreated or improperly treated water in a
CenT raVac may result in inefficient operation and possible
tube damage.

Important: Trane strongly recommends using the

services of a qualified water treatment
specialist to determine necessary water
treatment. A lab el with a customer
disclaimer note is affixed to each unit.

NOTICE:

P roper Water Treatment!

Trane assumes no responsibility for equipment failures
which result from untreated or improper l y treated
water, or saline or brackish water. The use of untreated
or improperly treated water in a CenTraVac could result
in scaling, erosi on , corrosion, algae or slime. It is
recommended that the services of a qualified water
treatment specialist be engaged to determine what
water treatment, if any, is required.

Pressure Gauges

Valves—Drains and Vents

NOTICE:

W aterbox Damage!

Failure to follow instructions could res ul t in damage to
the waterbox. Do not over-tighten or use excessive
Tef lon® pipe tape when installing valves, drains, plugs
and vents on waterboxes.

1 . Install field-supplied air vents and drain valves on the

waterboxes. Eac h waterbox is provided with a National
Pipe Thread Female (NPTF ) vent and drain connection;
the openi ngs are 19.05 mm (3/4 i n.).

NOTICE:

Over-pressurization!

Failure to install pressure-relief valv es in the condenser
and evapora tor water circuits could result in waterbox
damage due to hydrostatic expansion.

2. If necessary for the application, install pressure-relief
valves at the drain connections on the evaporator and
condenser waterboxes. To do so, add a tee with the
relief valve attached to the drain valve. Fol low local
codes for determining if drai n connection is large
enough for relief devices.

T o determine whether or not pressure relief valves are
needed for a specific application, keep in mind that:

a. Vessels with close-coupled shutoff valves may

cause high potentially damaging hydrostatic
pressures as fluid temperature r ises.

b. Relief valves are required by American Society o f

Mechanical Engineers (A SME) codes when the
waterside is ASME. Follow ASME guidelines or
other applicable codes/local regulation to ensure
proper relief valve installation.

Strainers

NOTICE:

Tube Damage!

Failure to install strainers in all water piping entering
the chiller could result in tube plugging conditions that
damage unit components.

Locate pressure gauge taps in a straight length of pi pe.
Place each tap a minimum of one pipe diameter
downstream of any elbow, orifice, etc. F or example, for a

152.4 mm (6 in.) pipe, the tap would be at least 152.4 mm
(6 in.) from any elbow, orifice , etc.

22 CVHH-SVX001A-EN

Install a strainer in the entering side of each piping circuit
to av oid possible tube plugging in the chiller with debris.

Required Flow-Sensing Devices

The ifm efector® flow detection controller and sensor (see

“ Water Flow Detection Controller and Sensor—ifm

Installation: Water Piping

Components:

A. E40174 – 1/2" NPT adapter (for ow probe)

B . SF6200 – Flow probe

C . SN0150 – Flow control monitor

D. E70231 – Combicon connectors (quantity 5)

E . E10965 – Micro DC cable, 10m length, PUR jacket

F. F53003 – Din rail, 40mm length

Output to

control cabinet

Jumper

N

L

AC

Jumper

monitoring

rated using

monitoring

rail (F) into control cabinet.

in combicon connectors (D) according to

4

3

2

1

If factory-provided,
located in control panel.

efector,” p. 23) are used to verify evap orat or and

condenser water flows.
If a customer-suppl ied flow sensing device is used to

ensure adequate chiller protection, refer to the wiring
diagrams that shipped with the unit for specific electrical
connections.

Be sure to follow the manufacturer’s recommendations for
device selection and installation.

Water Flow Detection Controller and Sensor—ifm
efector

Figure 10. Installation of ifm efec tor flow detection

controller and sensor

2. Insert the flo w probe through the 1/2-in. NPT adapter
as near the center of the pipe as p ossible (see item
labeled “ 2” in

Figure 10, p. 23). Finger-tighten the

1/2-in. NPT adapter; then, tighten with a wrench an
additional 1-1/4 turns.

Note: When installed, the tip of the ifm efector sensor

probe must be at least 2.54 cm (1 in.) 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. 23). Install the

supplied Micro DC C able (9 meters [25 feet] in length)
to the Flow Probe and hand-tighten the connector nut.

4. Plug the other end of the Micro DC C able into the Flow
Control Monitor with the Combicon connector (see
item labeled “ 4” in

Figure 10, p. 23). R efer to Figure 11

for cable wiring.

1. Mount the 1/2-in. NPT adapter in a horizonta l or
vertical section of pipe. The maximum distance from
the control panel must not exceed 8.99 meters (29.5 ft)
(see item labeled “ 1” in
five pipe diameters straight run of pipe upstream of the
sensor location, and three pipe diameters straight run
of pipe downstream of the sensor location.

No te: In the case of a horizontal pipe, mounting the

CVHH-SVX001A-EN 23

Figure 10, p. 23). Allow at least

sensor in the side of the pipe is preferred. In the
case of a vertical pipe, mounting the sensor in
a place where the water flows upwards is
preferred.

Installation: Water Piping

X39003892001A

7

NOTICE:

Do Not Apply Elec tric al Power to a Unit in
a Vacuum!

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. 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.

flow setting cutout and adjusting counterclockwise (-)
increases the flow setting cutout.

Note: The “ Temp” potentiometer on the ifm efector

control module has no effect in Trane
application. It is not necessary to make
adjustments to the “ Temp” potentiometer.

8. Once the cutout setting is adjusted, the cutout setpoint
will be indicated with a yellow light on the Flow Control
Monitor LED bar graph display. When the water flows
are higher than the cutout, a green light will indicate
proper flow status. If the flows fall below the cutout
setpoint, a red light will indicat e low/no flow status.

Figure 11. ifm efector flow sensing device terminal

connection

NOTICE:

Proof of Flow Switch!

Evaporator and condenser water circuits require proof
of flow switches.

• Failure to include the proof of flow devices and/or
jumping out these devices could cause the unit to
stop on a secondary level of protection.

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharg e.

• All electrical enclosures—unit or remote—are IP2X.

5. Apply power to the chiller control panel to verify the
Flow Control Monitor has power and the Low Volt
Broken Wire Re lay light is not lit .

6. Remove all air from the piping circuit prior to adjusting
the low water flow setpoint.

7. Reduce the water flow to the minimum allowable flow
and adjust the Flow setting on the Flow Control
Monitor (see item labeled “ 7” in
the “ Flow” potentiometer clockw ise (+) reduces the

Figure 11). Adjusting

• Frequent cycling on these higher level diagnostic
devices could c ause excessive thermal and pressure
cycling of unit components (O-rings, gaskets,
sensors, motors, controls, etc.) and/or freeze
damage, resulting in premature failure of the chiller.

Failure to provide flow switches or jumping-out of
switches could result in severe equipment damage.

Evaporator and condenser proof of flow switches are
required. These switches are u sed with control logic to
confirm flow prior to starting a unit and to stop a running
unit if flow is lost. For trouble shooting, a viewable
diagnostic is generated if a proof of flow switch does not
close when flow is required.

24 CVHH-SVX001A-EN

Installation: Water Piping

44

445

5

3

3

7

2

21

9

6

2

2

8

Ou tlet

Inlet

1

2

3

45678

9

2

34

445

2

2

10

Outlet

Inlet

Evaporator and Condenser Water
Piping

Figure 12 and Figure 13, p. 25 illustrate the recommended

(typical) water piping arr angements for the evaporator
and condenser.

Figure 12. Typical evaporator water piping circuit

1. Balancing Valve

2. Gate (Iso lation) Valv e or Ball
Valve

3. Thermometer (if field supplied)

4. Waterbox Nozzle Connection

5. Drain, Vent, Anode

(a) Flow switch 4B4 may be installed in either the entering or leaving leg

of the chilled wat er circuit.

(b) It is recom mended to pipe the gauge between entering and leavin g

pipes. A shutoff valve on each side of the gauge allows the operator to
read either entering or leaving water pressure.

Figure 13. Typical c o nd en ser water piping circuits

1. Balancing Valve

2. Gate (Iso lation) Valv e or Ball
Valve

3. Thermometer (if field supplied)

4. Waterbox Nozzle Connection

5. Drain, Vent, Anode

Notes:
1 . Som e type of field-supplied temperature control device may be

required to regulate the temperat ure of the heat-recovery condenser
water circuit . For application recom mendations, refer to Heat
Recovery Sem inar ( Part 2): "Systems/Equipm ent (AM- FND-8).

2 . Install a bypass valve system to avoid circulating water through the

auxiliary shell when the unit is shut down.

3 . On m ultiple pass condensers, entering condenser water must ent er at

the lowest nozzle.

(a) Flow switch 4B5 may be installed in either the entering or leaving leg

of the water circuit.

(b) It is recomm ended to pipe a single gauge bet ween entering and leaving

pipes.

CVHH-SVX001A-EN 25

6. Strainer

7. Chilled Water Flow Switch

8. P ump

9. Pressure Gauge

6. Strainer

7. Condenser Water Flow
Switch (4B5)

8. 3-Way Valve (Optional)

9. Condenser Water Pump

10. Pressur e Gauge

(4B4)

Piping must be arranged and supported to avoid stress on
the equipment. It is strongly recommended that the piping
contractor does not run pipe closer than 0.91 meters
(3 feet) minimum to the equipment. This will allow for
proper fit upon arrival of the unit at t he jo b site. Any
adjustment that is necessary can be made to the piping at
that time. Expenses that result from a failure to follow this
recommendation will not be paid b y Trane.

Water piping connection sizes and components are
identified in

Table 4, p . 26 and Table 5, p. 27. Remember

that with many waterboxes the entering and leaving
evaporator water can be piped to either waterbox
connection when the tube bundles are split vertically.
However, large evaporator waterboxes, with entering and
leaving connections not at the same level, must be
connected with the entering water at the bottom and the
leaving water at the top.

Waterboxes with multip le pass arrangements uti lize a
baffle to separate the passes. These baffles are designed
for a maximum pressure of 137.9 kPad (20 psid). If larger
pressure drops are expected in the application, contact

(a)

(b)

your local Trane repr esentative to discuss special
waterbox options.

Impor tant: Water flows must be pi ped i n accordance

with nameplate designation.

Field-provided isolation valves for the evaporator and
condenser water lines should be installed upstream and
downstream of the heat exchangers, and be installed far
enough away from the chiller to also provide practical
service isol ation for flow sensing devices, field
thermometers, flexible connectors, and any removable
pipe spools.

Ensure that the evaporator water piping is clear, check it
after the chilled water pump is operated but before initial
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.

For condenser and large evaporator connections, arrange
the water piping so that the water supply enters the shell
at the lower connection, and exits from the top connection.
Operation al problems may result if this piping is n ot
correct. Some shells may be piped as desired since both
connections are at the same level.

(a)

For applications th at include an “ infinite source” or
“ multiple-use”, cooling condenser water supply, install a
valved bypass “ leg” (optional) between the supply and

(b)

return pi pes. This valved bypass allows the operator to
short-cir cuit water flow through the cooling condenser
when the supply water temperature is too low.

Note: System refrig erant pressure differential must be

maintained ab ove 20.7 kPad (3 psid) at all times.
Fa ilure to do so could result in operating problems.

Installation: Water Piping

Water Piping Connections

All standard units use grooved-pipe connections. These
are grooved-end NSP (Victaulic style) pipe connections.
Flanged connections are optional.

Piping joined using grooved type couplings, like all types
of piping systems, requires proper support to carry the
weight of pipes and equipmen t. The support methods
used must eliminate undue stresses on joints, piping and
other components; allow movement where required, and
provide for any other special requirements (i.e., drainage,
etc.).

Note: Plug-type sensor extension cables are available for

purchase from Trane P arts Service if needed. These
sensor extension cables may be necessary if the
waterboxes are changed or if the temperature
sensors are moved out into the unit pip ing for
better mixed temperature readings.

Table 4. Water connection pipe sizes

Wat er

Passes

Evaporator Metri c Pipe Size ( m m )

1 Pass DN3 00 DN300 DN350 DN400 DN500 DN400 DN500
2 Pass DN250 DN250 DN300 DN350 DN350 — —
3 Pass DN200 DN200 DN250 DN300 DN300 — —

Condenser

1 Pass DN300 DN350 — DN400 DN600 — DN600
2 Pass DN250 DN300 — DN350 DN350 — —

Evaporator Nom inal Pipe Size ( in.)

1 Pass 12 12 14 16 20 16 20
2 Pass 10 10 12 14 14 — —
3 Pass 8 8 10 12 12 — —

Condenser

1 Pass 12 14 — 16 24 — 24
2 Pass 10 12 — 14 14 — —

10 0 13 0 160 20 0 220 40 0 4 4 0

Shell Size

Figure 14. Typical grooved pipe connection

Waterbox L ocations

26 CVHH-SVX001A-EN

NOTICE:

Do Not Exchange Positions of Heat
Recovery Waterboxes!

Failure to follow this instruction could prevent proper
unit operation. Contact CenTraVac Technical Service for
switching of heat recovery waterboxes.

If necessary, the non-marine-style waterboxes on each
shell whether evaporator o r condenser can be switched
end-fo r-end to obtain the desired piping arrangement.

If removal of waterboxes is necessary, refer to

Removal and Installation,” p. 98

.

If the waterboxes on any of the shells are exchanged end­for-end, be sure to reinstall them right side up to maintain
the correct baffle arrangements. Use a new gasket with
each waterbox cover.

“ Waterbox

Installation: Water Piping

Water Box

Flange Adaptor
Trane Provided

Flanged

Wat erbox

Flange Adaptor
Tra n e prov ided

Water Box

Style 77 Flexible

Customer Provided

Customer

Victaulic

Wat erbox

Style 77 Flexible

Customer provided

Customer

Three-pass waterboxes have lifting lugs on the top and
bottom. When reinstalling, ensure that the waterbox is
oriented the same way it as removed.

Grooved Pipe Coupling

A customer-supplied, standard flexible groo ved pipe
coupling (Victaulic Style 77 or equivalent) should be used
to complete the Victaulic connection for both 1034.2 kPag
or 150 psig and 2068.4 kPag or 300 psig 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.

Table 5. Water piping connection components

Custom er Piping Connection

Unit Model

CVHH

CVHH Victaulic (All others)

Figure 15. Customer piping connection types

• Refer to the coupling manufacturer’s guidelines for
specific information concerning proper piping system
design and construction methods for grooved water
piping systems.

• Flexible coupling gaskets require proper lubrication
before installation to provide a good seal. Refer to the
coupling manufacturer’s guidelines for proper
lubricant type and application.

Flange-Connection Adapters

When flat-face flange connections are specified, flange-to­groove adapters are provided (Victaulic Style 741 for

1034.2 kPag or 150 psig systems; Style 743 for 2068.4 kPag

or 300 psig systems). The adapters are shipped bolted to
one of the chi ller end-supports. A dapter descripti ons are

Unit Connection

Type Victaulic Flanged

Flanged (Condenser

032–050 150 psig

[103 4.2 kPag] non-

marine only)

Customer

provided

Victaulic coupling

No adapter

required

Trane provided

Victaulic-to-

flang e adapter

given in

Table 6, p . 28 and Table 7, p. 28. The flange

adapters provide a direct, rigid connection of flanged
components to the grooved-pipe chiller waterbox
connections.

Figure 16. Typical shipping location for flange

In this case, the use of flexible type connecto rs (i.e.,
braided steel, elastomeric arch, etc.) are recommended to
attenuate vibration and prevent stress at the waterbox
connections. Flange adapter s are no t provided for CVHH
units with 2068.4 kPa or 300 psig waterboxes that hav e
356 mm (14 in.) and larger piping connections.

All flange-to-flange assembly bolts must be provided by
the installer. Bolt sizes and number required are given in

Table 6, p. 28 and Table 7, p. 28. The four draw-bolts

needed for the 355.6 mm (14 in.) and larger Style 741
(1034.2 kPag or 150 psig) adapters are provided. The
Style 741, 1034.2 kPag or 150 psig flange adapter requires
a smooth, hard surface for a good seal.

Connection to other type flange faces (i.e., raised, serrated,
rubber, etc.) will require the use of a flange washer
between the faces. Refer to the flange adapter
manufacturer’s guidelines for specific information.

The Style 743 (2068.4 kPa or 300 psig) flange adapters are
designed to mate with raised-face flanges. They can be
used with flat-faced flanges; however, only if t he raised
projections on the outside face of the adapter are
removed; see

Figure 17. The flange-adapter gasket must

be placed with the color-coded lip on the pipe and the other
lip facing the mating flange.

NOTICE:

Piping Connection Leaks!

Failure to provide effective seal could result in
equipment or property-only damage. To provide
effective s eal, gasket contact surfaces of adapter must
be free of gouges, undulations or deformities.

CVHH-SVX001A-EN 27

Installation: Water Piping

Remove to mate
to flat-faced
flanges

Figure 17. Modifying 300 psig or 21 bar flange adaptors

Figure 18. Typical Victaulic flange gasket configuration

for flat-faced flange application

3. Align and bring two pipe ends together and slide

Victaulic Gasket Installation

gasket into position centered between the grooves on
each pipe. No portion of the gasket should extend into

1. Inspect supplied gasket to b e cert ain it is suited for
intended service (code identifies gasket grade). Apply
a thin coat of silicone lubricant to gasket tips and
outside of gasket.

2. Install gasket, placing gasket over pipe end and making
sure gasket lip does not overh ang pipe end. Refer to

Figure 18 f or gasket configuration.

the groove on either pipe.

4. Open fully and place hinged Victaulic flange around
the grooved pipe end with the circular key section
locating into the groove.

5. Insert a standard bolt through the mating holes of the
Victaulic flange to secure the flange firmly i n the
groove.

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. 29

. Do not excessivel y tighten

fasteners.

Note: Uneven tightening may cause gasket to pinch.

Table 6. Installation data for 150 psig flange adapters (Style 741)

Nominal Pipe Size

As sem bly Bolt

mm in. in. mm in. kg lb

200 8 3/ 4 x 3-1/2 8 298 11.75 7.5 16.6
250 10 7/8 x 4 12 362 14.25 11 24.2
300 12 7/8 x 4 12 432 17 21.2 46.8
350 14 1 x 4-1/ 2 12 476 18.75 28.1 62
400 16 1 x 4-1/ 2 16 540 21.25 35.8 79
450 18 1-1/ 8 x 4-3/ 4 16 578 22.75 37.3 82.3
500 20 1-1/ 8 x 5-1/ 4 20 635 25 46.9 103.3
600 24 1-1/ 4 x 5-3/ 4 20 749 29.5 64.4 142

(a) Bolt size for conventional flange to flange connect ion. Longer bolts are required when flange washer m ust be used.

Size

( a )

Number of

Assem bly Bolts

Required

Bolt Pattern Diam eter Weight

Table 7. Installation data for 350 psig flange adapters (Style 743)

Nominal Pipe Size

mm in. in. mm in. kg lb

219.1 8 3/ 4 x 4-3/ 4 12 330 13 15.6 34.3

273.0 10 1 x 5-1/ 4 16 387 15.25 21.9 48.3

323.9 12 1-1/ 8 x 5-3/ 4 16 451 17.75 32. 0 70.5

(a) Bolt size for conventional flange to flange connect ion. Longer bolts are required when flange washer m ust be used.

Assem bly Bolt

Size

( a)

Number of

As sem bly Bolts

Required

Bolt Pattern Diam eter Weight

28 CVHH-SVX001A-EN

Bolt-Tightening Sequence for

1

3

45

7

8

26

8 bolt flange

1

3

4

10 11

9

5

7

8

12

26

12 bolt flange

1

1

5

5

9

9

20

22

3

3

4

4

66

7

7

8

8

10

10

19

18

17

16

16

15

15

14

14

13

13

12

12

11

11

16 bolt flan ge 20 bolt flan ge

Water Piping Connections

This section describes a bolt-tightening sequence for
flanges with flat gaskets or O-rings. Remember that
improperly tightened flanges may leak.

No te: Before tightening any of the bolts, align the flanges.

Flanges with 8 or 12 Bolts

Tighten all bolts to a snug tightness, following the
numerical sequence for the appropriate bolt pattern as
shown below. Repeat this sequence to apply the final
torque to each bolt.

Installation: Water Piping

Flanges with 16 or 20 Bolts

Tighten only the first half of the total number of bolts to a
snug tightness, following the numerical sequence for the
appr opriate bolt pattern as shown below. Nex t,
sequentially tighten the remaining half of the bolts in
numerical order.

Pressure Testing Waterside Piping

NOTICE:

E quipment Damage!

Failure to follow these instructions could result in
equipment damage. Do not over pressurize the system
or exceed design pressure. Always perform as a hydro

pressure test with water present in piping and
waterboxes.

Waterside design pressure is either 1034.2 or 2068.4 kP ag
(150 or 300 psig); refer to unit nameplate or to submittal
documentation.

CVHH-SVX001A-EN 29

Vent Piping

Refrigerant Vent Line

General Requirements

State and local codes, and ASHRAE Standard 15 contain
requirements for venting the relief device on the chiller to
the atmosphere outside of the building. These
requirements include, but are not limited to, permitted
mat erials, sizing, and pro per termination.

No te: The following information is a general outline of

vent-line installation requirements based on
ASHRAE Standard 15. Most codes contain similar
requirements but may vary in some significant
areas. The i nstaller must check state and local
codes and follow the specific requirements
applicable to the location.

Purge Discharge

To comply with ASHRAE Standard 15, the discharge
piping from purge units that remove noncondensible gas
from refrigerating systems must conform to the ASHRAE
Standard 15 requirements for relief piping. To h elp meet
this requirement, the purge discharge is factory-piped to
the relief device assembly.

Vent Line Materials

All materials in the relief device vent system must be
compatible with the refrigerant in use. Commonly used
and accepted p iping materials include steel and DWV
(drain/ waste/vent) copper. Consult local codes for
restrictions on materials. Consult with the manufacturers
of any field-provided components or materials for
acceptable material compatibility.

No te: PVC piping is acceptable for use as a v ent line

material with R-1233
the sections of plastic pipe may not be. When
considering a v ent system constructed of plastic
piping, such as PVC, ensure that both the pipe
material and the adhesive have been tested for
refrigerant compatibility. In addition, verify that the
local codes permit PVC for refrigerant vent lines;
even though ASHRAE Standard 15 doesn’t prohibit
its use, some local codes do.

The following materials for PVC pipe construction are
recommended for use with R-1233

Primer/Cleaner:

• Hercules—PVC Primer #60-465

• RECTORSEAL

Adhesives:

• Hercules—Clear PVC, Medium Body/Medium Set,
#60-020

• RECTORSEAL—PVC Cement, Gene™ 404L

®

PV C Cleaner—Sam™ CL-3L

(E), but the glue that joins

zd

(E):

zd

Vent Line Sizing

Vent line size must conform to lo cal codes and
requirements. In most cases, local codes are based on
ASHRAE Standard 15. ASHRAE Standard 15 provides
specific requirements for the discharge piping that allows
pressure-relief devices to safely vent refrigerant to the
atmosphere if over pressurization occurs. In part, the
standard mandates that:

• The minimum pipe size of the vent line must equal the
size of the discharge connection on the pressure-relief
device. A larger vent line size may be necessary,
depending on the length of the run.

• T wo or more relief devices can be piped together only
if the vent line is sized to handle all devices that could
relieve at the same time.

• When two or more relief devices share a common vent
line, the shared line must equal or exceed the sum of
the outlet areas of all upstream relief devices,
depending on the resulting back pressure.

ASHRAE Standard 15 provides guidance for determining
the maximum vent line length. It also provides the
equation (shown in
properly size the vent line at the outlet of a pressure-relief
device or fusible plug.

The equation accounts for the relationship between pipe
diameter, equivalen t pipe len gth, and the pr essure
difference bet ween the vent line inlet and outlet to help
ensure that the vent line syst em provides sufficient flow
capacity.

Table 8, p. 35 provides additional information based on

ASHRAE Standard 15, including:

• Capacities of various vent line sizes and l engths.
However, this data applies only to conventional
pressure-relief valves and NOT to balanced relief
valves, rupture members (as used on Trane
centrifu gal chill ers), fusible plugs, or pilot-operated
valves.

• A simplified meth od to determine the appropriate
vent-line size, with
with the total C value, read across to a pipe curve and
down to find the maximum allowable length for that
size pipe.

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 value(s) for
those options to the total as well.

Note:

Table 8, p. 35 and Figure 23, p. 36 are applicable

only for non-manifolded vent-line runs connected
to a 344.7 kPa (50 psi) rupture disk relief device. The
pipe length provided by the table is in “equivalent
feet.” The vent-line length in equivalent feet is the

Figure 23, p. 36) and data necessary to

®

Figure 23, p. 36. Enter the figure

30 CVHH-SVX001A-EN

Vent Piping

sum of the linear pipe length plus the equivalent
length of the fittings (e.g., elbows).

Vent Line Installation

Important: Before constructing the rupture disk vent

line, consult local codes for applicable
guidelines and constraints.

All CenTraVac centri fugal chillers are equipped with
rupture disks. If refrigerant pressure within the evaporator
exceeds 344.7 kPag (50 psig) the rupture disk breaks and
shell pressure is relieved as refrigerant escapes from the
chiller.

A cross-section of the rupture disk assembly appears in

Figure 19, p. 33 along with an illustration indicating the

location of the rupture disk on the suction elbow.
Several general recommendations for rupture disk vent

line installation are outlined below.

No te: If the rupture disk was removed for service or vent

line piping installation, the rupture disk must be
reinstalled (as shown in Figur e 19, p. 33). Refer to
the following procedure and contact CenTraVac
Technical Service when reinstal ling the rupture
disk.

• Ve rify that the rupture disk is positioned as shown in
the cross-section view that appears in

– Install t he two bottom bolt s though the pip e

flanges.

– Install the ruptu re disk with a gasket on each side

between the pipe flanges. Orient the disk with the
reference arrow facing the chiller side as shown in

Figure 19, p. 33.

– Install the two top bolts.
– Center the disk and gaskets to the flange bore.
– Hand tig hten all bolts assuring equal pressure.
– Use a torque wrench set to 196.6 N·m (145 ft·lb) with

a 24-mm socket.
– Tighten bolts in a star pattern, one half turn each, to

maintain even pressure on the disk.
– Final torque on all bolts should be 196.6 N·m

(145 ft·lb).

• When attaching the vent line to the chiller, do not apply
threading torque to the outside pipe of the rupture disk
assembly.

Figure 19, p. 33.

the rupture disk. (Stress can alter rupture pressure and
cause the disk to break premature ly.) The flexible
connector used to isolate the rupture disk from
excessive vent line vibration must be compatible with
the refrigerant in use. Use a flexible , steel co nnector
such as the stainless-steel type MFP, style HNE, flexible
pump connector (from Vibration Mounting and
Control, Inc.) or equivalent. Refer to
a recommended relief pipi ng arrangement.

Figure 20, p. 34 for

WARNING

Pressure-Relief Device Discharge Hazard!

An improper vent-line termination could result in death
or serious injury or equipment damage. When a
pressure-relief device operates, it could discharge a
large amount of fluid and/or vapor. Units MUST be
equipped with a vent-line termination that discharges
outdoors in an area that will not spray refrigerant on
anyone.

NOTICE:

Rupture Disk Damage!

Failure to follow instruction could result in damage to
the rupture disk assembly. Do not apply threading
torque to the outside pipe.

• P rovide support as needed for the vent line. Do not use
the rupt ure d isk assembly to support the vent line
piping.

• Use a flexible connection bet ween the vent-line and
the rupture disk assembly to avoid placing stress on

CVHH-SVX001A-EN 31

Vent Piping

X39003892001A

NOTICE:

P roper Refrigerant Vent Line Termination!

Failure to properly terminate a refrigerant vent line
could result in equipment damage. Improperly
terminating a refrigerant vent line could allow rain to
enter the line. Accumulated rainwater could cause the
relief device to malfunction; or, in the case of a rupture
disk, the rainwater pressure could cause the disk to
rupture, allowing water to enter the chiller.

NOTICE:

Equipment Damage!

Trane assumes no r es ponsibility for equipment damage
caused by insufficient drainage of the drip leg. All vent­lines must be equipped with a drip leg of 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
allow fluid to flow into the horizontal portion of the
vent-line.

• Consult local regulations and codes for any additional
relief line requir ements.

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

• Route t he vent-line piping so that it discharges
outdoors in an area that will not spray refrigerant on
anyone. Position the vent line discharge at least

4.572 meters (15 feet ) above grade level and at least

6.096 meters (20 feet) from any building opening.
P rovide a vent line termination that cannot be blocked
by debris or accumulate rainwater.

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

). Provide a standard 1/4-in. FL x 1/4-in. NPT,

p. 34

capped refrigerant service valve to facilitate liquid
removal.

32 CVHH-SVX001A-EN

Figure 20,

Figure 19. Illustrates rupture disk location, cross section of rupture disk

Rupture disk

Suction connection

Gasket

Outside pipe
assembly

Cap

Bolt

Vent Piping

Note: Pipe connection is 3 in. NPT.

CVHH-SVX001A-EN 33

Vent Piping

Alternate

Purge discharge
vent line

Outside
wall

Support
this pipe

Flexible
steel
connection

Drip le g
(length as required
for easy access)

1/ 4 in. FL x 1/4 in. NPT
drain valve

Rupture disk
ass embly

Chiller

ChillerChiller

Flow

Flow

Flow

Fl ow

Flow

Disk in normal
operating position.
Chiller pressure is
below 50 psig.

The disk snaps
open through the
score line o f the
outlet ring and the
pressure is vent ed.
The ou tlet ring is
designed with a
hinge area to retain
the disk petal.

When chiller
pressure exceeds
the disk’s rated
burst pressure, the
disk begins to tear
open al ong the
scor e line of the
outlet ring.

Flow

Flow

Flow

Flow

Flow

Chiller

Chiller Chiller

Figure 20. Arrangement for rupture disk relief piping

Trane RuptureGuard

General Information

The Trane RuptureGuard™ refrigerant containment
system replaces the rupture disk on new low pressure
chiller s utilizing R-1233
consists of a solid-metal, (non-fragmenting) reverse­buckli ng rupture disk, an d automatically re-seati ng relief
valve. The relief valve and the rupture disk are rated at the
chiller’s maximum working pressure level. If the chiller’s
refrigerant pressure exceeds the rupture disk burst rating,
the disk bursts, releasing pressure to the relief valve. The
relief valve vents the pressure down to a safe level and
then re-seats, thus minimizing the amount of refrigerant
vented to the atmosphere.
operation of a reverse buckling rupture disk.

(E). The RuptureGuard system

zd

Figure 21 illustrates the

Figure 21. Reverse buckling rupture disk

To prevent water, refrigerant and/or other debris such as
rust from hindering the operation of the valve, a drip leg
should be i nstalled immediately after or downstream of
the RuptureGuard (see

Figure 22).

Connection to External Vent Line and Drip
Leg

NOTICE:

Equipment Damage!

Trane assumes no r esponsibility for equipment damage
caused by insuf fic ient drainage of dr i p leg. All vent lines
must be equipped with a drip leg of sufficient volume
to hold the expected accumulation of water and/or
refri gerant. The drip leg must be drained periodically to
assure that it does not overflow and allow fluid to flow
into the horizontal portion of the vent line.

With RuptureGuard installed horizontally, the drain plug
downstream of the valve relief plug and nearest to the
bottom of the valve body should be piped to the drip leg
in the vent line. This will allow the removal of any
condensate formed within the valve body.

Provisions, such as installing a set of fl anges (see

Figure 22) or other disconnect means, must be made in the

discharge vent piping. This will allow the piping
downstream of the valve to be easily removed for an
annual inspection, to replace t he rupture disk, or for any
other servicing need.

34 CVHH-SVX001A-EN

Figure 22. External vent line and drip leg (not provided)

Purge
Exhaust

Flange

Drain Valve

Drain Line

Rupture
Disk

Inlet
Flange

Outlet Flange

Connect the discharge of the valve assembly to the vent
line conn ected to the outdoors.

1

No te: Make sure there are no crosses

, elbows, tees

or any other obstructions within the first

22.86 cm (9 in.) of valve discharge. Refer to
ASHRAE Standard 15, national, state, and local
codes for additional requirements on piping
rupture disk and relief valve vent lines.

Vent Piping

T able 8. “C” values us ed to determine rupture disk vent

line sizes (kg/s); for use with

“C” Values for Unit C om ponents

Total

Size

Cond.

Size

( CDSZ)

“C”

V a lue Eva p. Cond. Econ.

Figure 23, p. 36 t o determine the vent line

Evap.

NTON

900–1200 100M 100M 0.853 0.368 0.310 0.1 41 0.034
900–1200 100L 100L 0.939 0.4 15 0.349 0.141 0.034
900–1200 130M 130M 0.932 0.412 0.346 0.1 41 0.034
900–1200 160M 200M 1.022 0.461 0.386 0.1 41 0.034
900–1200 200L 220L 1.222 0.5 75 0.473 0.141 0.034

900–1200 220L 220L 1.284 0.6 37 0.473 0.141 0.034
1500-1700 200L 200L 1.195 0.575 0.435 0.151 0.034
1500-1700 220L 220L 1.295 0.637 0.473 0.151 0.034

900–1200 100M 10HM 0.967 0.368 0.424 0.141 0.034

900–1200 130M 13HM 1.053 0.412 0.467 0.141 0.034

900–1200 160M 20HM 1.144 0.461 0.509 0.141 0.034
1500-1700 200L 20HL 1.332 0.575 0.573 0.151 0.034
1500-1700 220L 22HL 1.458 0.637 0.637 0.151 0.034

Notes:
1 . Rupture disk diameter is 76.2 mm ( 3 in.).
2 . Use the total “ C” value in

pipe diam eter.

3 . If piping multiple rupture disks (multiple units) to a common vent

line, first determ ine the total “C” value for each unit, and then; add
all “C” values together and apply the result to

4 . The CVHH unit is a Simplex chiller and has (1) refrigerant circuit and

(1) relief device.

( EVSZ)

Figure 23, p. 36

Oil

Tank

Figure 23, p. 36.

1

A derate on the rated flow capacity for this configuration is published in RuptureGuard engineering bulletin, E/CTV-EB-10.

CVHH-SVX001A-EN 35

Vent Piping

Pipe Size ( I .D.)
friction factor

150 DN (6 NPS)
154 mm (6.06 in.)
f = 0.0149

100 DN (4 NPS)
102 mm (4.03 in.)
f = 0.0163

80 DN (3 NPS)
78 mm (3.07 in.)
f = 0.0173

125 DN (5 NPS)
128 mm (5.05 in.)
f = 0.0155

Pipe size as a Funct ion of “C” Value a nd Le ng t h of Run

10

1

0

100

100010

L = Pipe Length ( Equivalent Meters)

( Meters x 3 .2 81 = Feet)

“C” Value (kg/s)

ASHRAE Standard 15

L =

7.4381x10

-15d5

(P

2

0

- P

2

2

)-d * ln(P0 / P2)

fC

2

R

500f

Figure 23. Rupture disk vent pipe sizing (SI units); for use with

Table 8, p. 35

Note: This figure, provided as a reference, is based on ASHRAE Standard 15. Vent line size is typically dictated by state or local code which m ay be different

from ASHRAE Standard 15 requirements.

• L = equivalent length of discharge piping, meters
= rated capacity as stamped on the relief device in

• C

r

SCFM (conversion: kg/s = SCFM * 0.0764 / 132.28)

= C value from

C

r

T able 8, p. 35 (convert C in kg/s to lb/

min for IP; lb/min = (kg/s) / 132.28)

• f = Moody friction factor in fully turbulent flow

• d = inside diameter of pipe or tube, mm

• ln = natural log arithm

= absolute pressure at outlet of discharge piping,

• P

2

kPa (atmospheric pressure)

36 CVHH-SVX001A-EN

• P0 = allowed back pressure (absolute) at the outlet of
pressure relief device, kPa

= (0.15 P) + atmospheric pressure

P

0

T able 9. “C” values us ed to determine rupture disk vent

line sizes (lb/min); for use with

“C” Values for Unit C om ponents

Total

Size

Cond.

Size

( CDSZ)

“C”

V a lue Eva p. Cond. Econ.

Figure 24, p. 38 t o determine the vent line

Evap.

NTON

900–1200 100M 100M 112.0 48.4 40.7 18.5 4.5
900–1200 100L 100L 123.2 54 .5 45.8 18.5 4.5
900–1200 130M 130M 122.4 54.0 45.4 18.5 4.5
900–1200 160M 200M 134.1 60.5 50.7 18.5 4.5
900–1200 200L 220L 160.4 75 .4 62.1 18.5 4.5

900–1200 220L 220L 168.6 83 .6 62.1 18.5 4.5
1500-1700 200 L 200L 156.8 75.4 57.1 19.8 4.5
1500-1700 220 L 220L 169.9 83.6 62.1 19.8 4.5

900–1200 100M 10HM 127.0 48.4 55.7 18.5 4.5

900–1200 130M 13HM 138.2 54.0 61.3 18.5 4.5

900–1200 160M 20HM 150.2 60.5 66.8 18.5 4.5
1500-1700 200 L 20HL 174.9 75.4 75.2 19.8 4.5
1500-1700 220 L 22HL 191.4 83.6 83.6 19.8 4.5

Notes:
1 . Rupture disk diameter is 3 in. (76.2 m m).
2 . Use the total “ C” value in

pipe diam eter.

3 . If piping multiple rupture disks (multiple units) to a common vent

line, first determ ine the total “C” value for each unit, and then; add
all “C” values together and apply the result to Figure 24, p. 38.

4 . The CVHH unit is a Simplex chiller and has (1) refrigerant circuit and

(1) relief device.

( EVSZ)

Figur e 24, p. 38

Oil

Tank

Vent Piping

CVHH-SVX001A-EN 37

Vent Piping

Pipe Size ( I .D.)
friction factor

6 NPS (150 DN)

6.06 in. (154 m m)
f= 0.0149

4 NPS (100 DN)

4.03 in. (102 mm)
f= 0.0163

3 NPS (80 DN)

3.07 in. (78 mm)
f= 0.0173

5 NPS (125 DN)

5.05 in. (128 m m)
f= 0.0155

Pipe size as a Funct ion of “C” Value a nd Le ng t h of Run

1000

100

10

100

100010

L = Pipe Length ( Equivalent Feet)

( Feet x 0.3 05 = Meters)

“C” Value (lb/min)

ASHRAE Standard 15

L =

0.214d5 (P

2

0

- P

2

2

)-d * ln(P0 / P2)

fC

2

R

6f

Figure 24. Rupture disk vent pipe sizing (IP units); for use with

Table 9, p. 37

Note: This figure, provided as a reference, is based on ASHRAE Standard 15. Vent line size is typically dictated by state or local code which m ay be different

from ASHRAE Standard 15 requirements.

• L = equivalent length of discharge piping, feet
= rated capacity as stamped on the relief device in

• C

r

SCFM (conversion: lb/min = SCFM * 0.0764)

= C value in lb/min from

C

r

Table 9, p . 37

• f = Moody friction factor in fully turbulent flow

• d = inside diameter of pipe or tube, in.

• ln = natural log arithm

= absolute pressure at outlet of discharge piping, psi

• P

2

(atmospheric pressure)

38 CVHH-SVX001A-EN

• P0 = allowed back pressure (absolute) at the outlet of
pressure relief device, psi

= (0.15 P) + atmospheric pressure

P

0

Insulation

Unit Insulation Requirements

F actory-installed insulation is available as an option for all
units. Factory installation does not include insulation of
the chiller feet; if required, insulation for chiller feet is
provided by others. In applications where the chiller is not
factory-insulated, install insulation over the areas outlined
and highlighted with dashed lines as shown in

p. 40

.

Insul ate all 6.35-mm (1/4-in.) eductor lines, one from the
suction cover and one from the evaporator to prevent
sweat ing .

The quantities of insulation required based on unit size
and insulation thickness are listed in Tab l e 10. Insulation
thickness is determined at normal design conditions which
are:

• standard comfort-cooling leavin g chilled water
temperature

• 29.4°C (85°F) dry bulb ambient temperature

• 75 percent relative humidity

Operation outside of normal design conditions as defined
above may require additional insulation; contact T rane for
further review.

Note: If the unit is not factory-insulated: install insulation

around the evaporator bulbwells and ensure that
the bulbwells and connections for the waterbox
drains and vents are still accessible after insulation
is applied. The sensor modules (LLIDs) and
interconnecting four wire cable (IPC bus) must be
raised up above the field-installed insulation.
Secure the IPC bus to the insulation top/outer
surface after insulatio n is completed.

Important: Do not insulate the motor housing, unit

wiring, or sensor modules.

Figure 25,

Insulation Thickness
Requirements

Factory applied insulation. All low-temperature

surfaces are covered with 19.05 mm (3/4 in.) Armaflex
or equal (thermal conductivity = 0.036 W/m2-K
[0.25 Btu/h-ft2]), including the evaporator, waterboxes,
suction elbow, economizer, and piping.

The insulation is Armaflex or equivalent closed cell
elastomeric insulati on to prevent the formation of
condensation in environments with a relative humidity up
to 75%. Chillers in high humidity areas or ice storage, low
leaving water temperature (less than 2.2°C [36°F] chilled
water temperature/glycol) units may require double
thickness to prevent formation of condensation.

NOTICE:

Insulation Damage!

To prevent damage to factory installed insulation:

• Do not allow the insulation to be exposed to
excessive sunlight. Store indoors or cover with
canvas to preven t exposure.

• Do not use thinners and solvents or other types of
paint. Use only water base latex.

Failure to follow these instructions could result in
insulation damage.

®

II

Table 10. CVHH evaporator insulation requirements

EVSZ

( Standard Unit)

100M 61.4 661

100L 63.2 680
130M 63.5 684
160M 66.1 711
200M 68.6 738

200L 71.1 765
220M 71.5 770

220L 74.2 799

Notes:
1 . Units are NOT insulated on the m otor or refrigerant drain lines.
2 . 19.05- mm (3/ 4- in.) sheet insulation is installed on t he evaporator,

evaporator waterboxes, suction elbow, suction cover, economizer,
liquid lines, and piping.

3 . Copper oil eductor lines require pipe insulation.

CVHH-SVX001A-EN 39

19 0.5 m m ( 3 / 4 in.) I nsulation

2

m

2

ft

Insulation

Line to
eductor

Filter drier and
eductor lines

Line
from
evap

Control
panel
support

Pipe (free
cooling only)

Pipe

Economizer

Pipe

Suction
elbow

Suction
cover

See Notes

1 & 3

Evaporator

See Note

1

See Notes

1 & 3

Eductor line

Suction
connection

Figure 25. Recommended area for unit insulation

Notes:
1 . Bulbwells, drain and vent connections m ust be accessible after insulating.
2 . Evaporators with pre ssure vessel nameplates must have insulation cut out

around the nam eplate . Do not glue insulation to t he nameplate.

3 . All units with evaporator marine waterboxes wrap waterbox shell insulation

with strapping and secure strapping with seal.

4 . Apply 50.8-mm (2-in.) wide black tape on overlap joints. Where possible

apply 7.6-c m (3-in.) wide strip of 9.7-mm (0.38-in.) thick insulat ion over
butt joint seam s.

5 . Insulate all economizer supports.

40 CVHH-SVX001A-EN

Installation: Controls

LINK

+ +

+

24

VDC

+

MBUS

Front View

6

7
8

9

6

1

10
11

234 5

This section covers information pertaining to the UC800
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
CenT raVac™ C hillers Operations Guide (CTV -SVU01D-E N,
or the most recent version).

UC800 Spec ifications

Power Supply

NOTICE:

Customer Wiring!

Failure to follow instructions below could result in
equipment or property-only damage. Only use flexible
conduit or metal-clad cable when wiring the control
panel and motor terminal box to ensure a vibration-free
installation.

The UC800 (1K1) receives 24 Vac (210 mA) power from the
1T3 power supply located in the chiller control panel.

Wiring and Port Descriptions

Figure 26 illustrates the UC800 controller ports, LEDs,

rotary switches, and wiring terminals. The numbered list
following
in the illustration.

Figure 26 corresponds to the numbered callouts

Figure 26. Wiring locations and connection ports

CVHH-SVX001A-EN 41

Installation: Controls

Bottom View

10

11

LINK

LINK MBUS IMC

TX

RX

ACT

SERVICE

Marquee LED

Figure 26. Wiring locations and connection ports

1 . Rotary Switches for setting BACnet® MAC address or MODBUS® ID.

2. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field
wired if used.

3. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field
wired if used.

4. Machine bus for existing machine LLIDs (IPC 3 T racer bus 19.200 baud).

IPC3 Bus: used for Comm4 using TCI or LonTalk

5. Power (210 mA at 24 Vdc) and ground terminations (same bus as
item 4). Factory wired.

6. Not used.

7. Marquee LED power and UC800 Status indicator (

8. Status LEDs for the BAS link, MBus link, and IMC link.

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).

®

using LCI-C.

Tabl e 11, p . 42).

Communication Interfaces

There are four connections on the UC800 that support the
communication interfaces listed. R efer to
for the locations of each of these ports.

•BACnet MS/TP

• MODBUS Slave

• LonTalk using LCI-C (from the IPC3 bus)

• Comm 4 using TCI (from th e IPC3 bus)

Figure 26, p. 41

Rotary Switches

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
MODBUS system (e.g., 107, 127, etc.).

Note: V alid addresses are 001 to 127 for BACnet and 001

to 247 f or MODBUS.

LED Description and Operation

There are 10 LEDs on t he front of the UC800.
shows the locations of each LED and

Table 11, p. 42

describes their behavior in specific instances.

42 CVHH-SVX001A-EN

Figure 27

Figure 27. LED locations

Table 11. LED behavior

LED UC80 0 Status

Pow ered. If the Marquee LED is green solid, the

UC800 is powered and no problem s exist.
Low power or m alfunct ion. If the Marquee LED is

Marquee LED

LINK, MBUS,

IMC

Ethernet Li nk

Servic e

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
w hen the UC800 tr ansfers data to other devices on
the link.

The Rx LED blinks yellow at the data transfer rate
when the UC800 receives data from other devices on
the link.

The LI NK LED is solid green if the Ethernet link is
connected and communicating.

The ACT LED blinks yellow at the data transfer rate
w hen data flow is active on the li nk.

The Service LED is solid green when pressed. For
qualified service technicians only. Do not use.

Important: Maintain at least 16 cm (6 in.) between low-

voltage (<30V) and high voltage circuits.
Failure to do so cou ld result in electrical
noise that could distort the signals carried
by the low-voltage wiring, including IPC.

Installation: Controls

30 Volt Maximum 30–120 Volt Maximum

Figure 28. Control panel: Tracer AdaptiView main unit assembly (showing low voltage and higher voltage areas for

proper routing of field wiring)

CVHH-SVX001A-EN 43

Installation: Controls

A

B

C

D

E

Installing the Tracer AdaptiView
Display

The Tracer AdaptiView display is boxed, shrink-wrapped,
and located behind the control panel during shipment. The
Tracer AdaptiView display must be installed at t he site.

Important: The Tracer AdaptiView display and display

arm are to be installed by Trane, or an agent
of Trane, for best results.

1 . Unwrap the control panel and display arm. Locate the

box containing the Tracer AdaptiView display behind
the control panel (labeled A).

2. After the box containing the display has been
removed, remove the shipping bra cket from the back
of the control panel (B).

CAUTION

Tension in Display Support Arm!

Failure to ensure that the support arm is in the full
upright position when removing the Tracer AdaptiView
display from the support arm could result in
unexpected movement of the spring-loaded support
arm which could result in personal injury.

Note: Review

Arm,” p. 45

adjustments may be required prior to attaching the
display to the support arm base.

6. Position the Tracer AdaptiView display, with the LCD
screen facing u p, on top of the disp lay support arm
base plate.

Note: Ensure the Trane logo is positioned so that it

“Adjusting the Tracer AdaptiView Display

prior to attaching the display as some

will be at the top when the Tracer AdaptiView
display is attached to the display support arm.

NOTICE:

Do Not Drop Display!

Failure to keep a firm grip on the Tracer AdaptiView
display as you position the display on top of the
support arm base place could result in equipment or
property-only damage.

3. R emove the Tracer AdaptiView display from the box.

Note: Screws are M4 (metric siz e 4), 6 to 8 mm long,

and are shipped with the display.

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.

7. Align the four holes in the display with the bolt hole s
in the display support arm base plate.

8. Attach the Tracer AdaptiView d isplay to the display
support arm base plate (E) using the M4 (metric size 4)
screws referenced in

Step 3.

5. Adjust the Tracer AdaptiView display support arm so
the base plate that attaches to the Tracer AdaptiView
display is horizontal.

44 CVHH-SVX001A-EN

Adjusting the Tracer AdaptiView

4

3

2

1

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

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.

No te: Each hex bolt or screw is labeled with loosen/

tighten or +/- indicators.

Figure 29. Joint locations on the display arm

Figure 29).

Installation: Controls

• 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

“ Installing the Tracer AdaptiView Display,” p. 44. This

adjustment must be done prior to attaching the Tracer
AdaptiView disp lay t o the support arm base. Use a
14 mm wrench to adjust the tension.

• T o adjust the left/right swivel of the entire display arm,
use a 13 m m wrench to adjust the bolt labeled 4 in

Figure 29.

Step 8 in

CVHH-SVX001A-EN 45

Electrical Requirements

X39003892001A

Installation Requirements

WARNING

P roper Field Wiring and Grounding
Required!

Failure to follow code could result in death or serious
injury. All field wiring MU ST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards , y ou MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/stat e/ national electrical codes.

As you review t his manual, along with the wiring
instruct ions presented in this sect ion, keep in mind that:

• All field-installed wiring must conform to National
Electric Code (NEC) guidelines, and any applicable
national, state, and local codes. For the USA, be sure to
satisfy proper equipment grounding requirements per
NEC.

• Compressor motor and unit electrical data (includin g
motor kW, voltage utilization range, rated load amps,
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.

Note: Always re fer to the actual wiring diagrams that

shipped with the chiller or the unit submittal for
specific as-built electrical schematic and
connection information.

NOTICE:

St arter Component Damage!

Failure to remove debris from inside the starter panel
could result in an electrical short and could cause
serious starter component damage.

Do not modify or cut enclosure to provide electrical access.
Removable panels have been pro vid ed, and any
modification should be done away from the enclosure. If
the start er enclosure must be cut to provi de electrical
access, exercise care to prevent debris from falling inside
the enclosure. Refer to installation information shipped
with the starter or submitt al drawings.

Electrical Requirements

Before wiring begins, observe the foll owing electr ical
requirements:

• Follow all lockout-tagout procedures prior to
performing installation and/or service on the unit.

• Always wear appropriate personal prot ective
equipment.

No te: Graphic labels (shown above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

Unit-mounted starters are available as an option on most
units. While this option eliminates most field-installed
wiring requirements, the electrical contractor must still
complete the electrical connection for the following:

• power supply wiring to the starter,

• other unit control options present, and

• any field-supplied control devices.

46 CVHH-SVX001A-EN

• Wait the required time to allow the capacitor(s) to
discharge; this could be up to 30 minutes.

• Verify that all capacitors are discharged prior to service
using a properly rated volt meter.

• Use appropriate capacitor discharge tool when
necessary.

• Comply with the safety practices recommended in
PROD-SVB06*-EN.

For AWG/MCM equivalents in mm2, refer to Table 12:

X39003892001A

Table 12. Wire sizing reference

AW G/ MCM m m2 equivalent

22 0.32
21 0.35
20 0. 5
18 0.75
17 1. 0
16 1. 5
14 2. 5
12 4
10 6
810
616
425
2 or 1 35
1/ 0 50
2/ 0 70
2/ 0 or 3/ 0 9 5
4/ 0 or 250 120
300 150
350 or 400 185
450 or 500 240

Note: AWG = American Wire Gauge

Electrical Requirements

WARNING

Personal Protective Equipment (PPE)
Required!

Failure to follow proper handling guidelines could
result in death or serious injury. Always wear
appropriate personal pr otective equipment in
accordance with applicable regulations and/or
standards to guard against potential electrical shock
and flash hazards.

WARNING

Live Electrical Components!

Failure to follow all electrical safety prec autions when
exposed to live electrical components could result in
death or serious injury. During installation, testing,
servic ing and troubles hooting of this product, it may be
necessary to work with live electrical components.
Have a qualified licensed electrician or other individual
who has been properly trained in handling live
electrical components perform these tasks.

Important: Customers are responsible for al l fi eld

wirin g in compliance with local, national,
and/or international codes.

WARNING

Hazardous Volt age w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharg e all motor start/ run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. V er ify with an appropriate voltmeter that all
capacitors have discharged.

For additional inf ormation regarding the safe discharge of
capa citors, see PROD-SVB06*-EN

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

CVHH-SVX001A-EN 47

Electrical Requirements

Trane-Supplied Remote Starter Wiring

Table 13. Standard field power wiring requirements

Pow er Supply W iring

to Starter Panel

3-Phase Line Voltage L1, L2, L3, and GROUND

Start er t o Motor Pow er W iring Starter Mot or

Remote Starte r to Chiller Motor Junction Box T1 through T6 T1 through T6

Pow er Supply W iring to Unit- Mounted

Cont rol Pow er Transform er

( CPTR Optional)

3-Phase Line Voltage
Grou nd CPTR panel GND

( b)

Starter t o Control Panel

12 0 Vac Control W iring

120 Vac Power Supply (from starter to control
panel)

High Pressure Cutout to Starter 2X8-4 1X1-4
1F1 Circuit Breaker to Starter 2X 8-3 1X1-2
Oil Pum p Interlock 2X8-7, 2X8-8 1X1-10, 1X1-21
LV starter Oil/Refrigerant pump start 2X8-24 1X1-21
MV starter Oil/ Refrigerant pump start 2X 8-14 1X1-21
Oil/Refrigerant pump neutral 2X8-25 1X1-16

Starter t o Oil/ Refrigerant Pump

Junction Box

Low Voltage 3-Phase Pum p Power 2X8-21, 2X8-22, 2X8-23 4X4-1, 4X4-2, 4X4-3
Medium Voltage 1-Phase Pump Power 2X8-12, 2X8-13 4X4-1, 4X4-4

Low Voltage Circuits

less than 30 Vac

Standard Circuits

Inter Processor Com munications (IPC)
Remote Mounted

Notes:
1 . All wiring to be in accordance with National Electrical Code and any local codes.
2 . Auxiliary equipm ent m ust be powered from other sources as the chiller control panel power supplies are si zed for the chiller loads only.

(a) Ground lug for a unit-mounted solid state starter or wye-delta starter is sized to accept 14 AWG solid to 8 AWG strand wire. For AWG/ MCM equivalents

in m m2, refer to
(b) Refer to submit tal and ship-with wiring schem atics for voltage requirem ents.
(c) Must be separated from 120 Vac and higher wiring.

(c)

Table 12, p. 47. If local codes require different lug size, it must be field-supplied and -installed.

Starter Panel

Terminals

(a)

Cont rol Pow er

Transformer Term inals

6Q1-1,3,5

Starter Panel

Terminals

2X8-1, 2X 8-2

2X8-G (Ground)

Starter Panel

Terminals

Starter Panel

Terminals

2K32-J3-3-4, or

2X1-12 to 13 if present (do not

gro und shield at starter)

Unit Control Panel

Terminat ions

1X1-1, 1X1-12

1X1-G (Ground)

Oil/ Refrigerant

Pum p Junction Box

Unit Control Panel

Terminat ions

1T2-J53-4

Shield ground at

1X1-G (GND) only.

2 wire with ground

Comm link

48 CVHH-SVX001A-EN

Customer-Supplied Remote Starter Wiring

Table 14. Standard customer-supplied remote field wiring requirements

Pow er Supply W iring to Start er Panel

Starter by oth ers 3-Phase power wiring

Terminals

See starter by others

schem atic

Starter t o Motor Pow er W iring Starter Motor

Start er Panel

Remote Starter to Chiller Motor Junction

(a)

Box

T1 through T6 T1 through T6

Cont rol Pow er

Pow er Supply W iring to Unit- Mounted

Cont rol Pow er Transform er ( CPTR)

3-Phase Line Voltage
Grou nd CPTR panel GND

( b)

Start er to Control Panel 1 20 Vac

Cont rol Wiring

Power from control panel 1F1 5X 12-3 1X1-2
Neutral from control panel 5X 12-2 1X1-13
Ground from control panel 5X12-G 1X 1-G
Interlock r elay signal 5X12-4 1 K23 J10-1
Start contactor signal 5X12-5 1K23 J8-1
Oil Pum p Interlock 5X 12-7, 5X12-8 1X1-10, 1X1-21
Run contactor signal 5X12-10 1K23 J6-1
Transition com plete 5X12-14 1K23 J12-2

Solid State Starter Fault

( c )

Low Voltage Circuit s less than 30 Vac

Standard Circuits

Current Transfor m ers (see
(Required)

Potential Transformers (Required)

Notes:
1 . All wiring to be in accordance with National Electrical Code and any local codes.
2 . Refer t o ship-with wiring schem atics; some terminals m ay vary based on unit.

(a) For AWG/ MCM equivalents in mm2, refer to
(b) Refer to submit tal and ship-with wiring schem atics for voltage requirem ents.

(c) Solid State Starter Fault input is used with low-and m edium-voltage, custom er-supplied solid state starters only.
(d) Must be separated from 120 Vac and higher wiring.

(d)

and UL 1995.

Table 15, p. 50)

(d)

Transformer

Terminals

6Q1-1,3,5

Start er Panel

Terminals

5X12-12
5X12-11

Start er Panel

Terminals

5X12-19 1K23 J7-1
5X12-20 1K23 J7-2

5X12-21 1K23 J7-3
5X12-22 1K23 J7-4
5X12-23 1K23 J7-5
5X12-24 1K23 J7-6
5X12-25 1K23 J5-1
5X12-26 1K23 J5-2
5X12-27 1K23 J5-3
5X12-28 1K23 J5-4
5X12-29 1K23 J5-5
5X12-30 1K23 J5-6

Tab le 1 2 , p. 47 . Wires, lugs, and fuses/ breakers are sized based on National Electric Code NEC [ NFPA 70]

Unit Control Panel

Terminat ions

1K13 J2-2
1K13 J2-1

Unit Control Panel

Terminat ions

Note: Phasing must be

maintained

CVHH-SVX001A-EN 49

Customer-Supplied Remote Starter Wiring

C ur rent Trans f or mer and P otential
Transformer Wire Sizing

F or customer-supplied starter-to-chiller unit control panel
starter module 1K23; these wires must be separated from
120 Vac or higher wiri ng.

Table 15. Maximum recommended wire length for

secondary CT leads in dual CT system

Maximum Wire Length

Secondary CT Leads

Wire AW G

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.
(a) For AWG/ MCM equivalents in mm2, refer to

and fuses/ breakers are sized based on National Electric Code NEC

[NFPA 70] and UL 1995.

( a )

8 415.5 1362.8
10 261.2 856.9
12 164.3 538.9
14 103.3 338.9
16 65.0 213.1
17 51.5 169.1
18 40.9 134.1
20 25.7 84.3

Table 16. Maximum recommended total wire length for

PTs in a single P T system

Wire AW G

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 t he
listed value.

(a) For AWG/ MCM equivalents in mm2, refer to

and fuses/ breakers are sized based on National Electric Code NEC
[NFPA 70] and UL 1995.

( a )

8 1627 5339
10 1023 3357
12 643 2112
14 404 1328
16 254 835
17 201 662
18 160 525
20 100 330
21 79 262
22 63 207

Meters Feet

T able 12, p. 47. Wires, lugs,

Maximum Lead Length

Meters Feet

T able 12, p. 47. Wires, lugs,

Table 17. Max recommended total wire length (to and

from) for PT leads in a dual PT system

Max Wire Length

Wire

( a)

AW G

8 933 3061 217 711
10 586 1924 136 447
12 369 1211 85 281
14 232 761 53 177
16 145 478 33 111
17 115 379 26 88
18 91 301 21 70
20 57 189 13 44
21 45 150 10 34
22 36 119 8 27

Notes:
1 . Wire length is for copper conductors only.
2 . The above length is maxim um round trip wire length. The maximum

distance the PT can be located from t he starter m odule is half of the
listed value.

(a) For AWG/MCM equivalents in m m2, refer to

and fuses/ breakers are sized based on National Electric Code NEC
[NFPA 70] and UL 1995.

Prim ary

Meters Feet Meters Feet

Max Wire Length

Secondary

Tab le 1 2 , p. 4 7. Wires, lugs,

50 CVHH-SVX001A-EN

Power Supply Wiring

X39003892001A

WARNING

P roper Field Wiring and Grounding
Required!

Failure to follow code could result in death or serious
injury. All field wiring MU ST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards , y ou MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/stat e/ national electrical codes.

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

NOTICE:

St arter Component Damage!

Failure to remove debris from inside the starter panel
could result in an electrical short and could cause
serious starter component damage.

NOTICE:

U se Copper Conductors Only!

Failure to use copper conductors could result in
equipment damage as unit terminals are not designed
to accept other types of conductors.

•Do not modify or cut enclosure to provide electrical
access. Removable panels have been provided, and
any modification should be done away from the
enclosure. If the starter enclosure must be cut to
provid e electr ical access, ex ercise care to prevent
debris from falling inside the enclosure.

• Use copper conductors to connect the thr ee-phase
power supply to the remote- or unit-mounted starter
panel.

• Flexible con duit connection s are recommended t o
enhance serviceability and minimize vibration
transmission.

• Size the power supply wiring in accordance with NEC
and local guidelines, 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
in unit submittal.

• Make sure that the incoming power wiring is properly
phased; each power supply conduit run to the starter
must carry the correct number of conductors to ensure
equal phase representation.

Note: Connect L1, L2, and L3 (shown below) per

starter diagram provided with chill er.

Three-Phase Power

R eview and follow the guidelines below to properly install
and connect the power supply wiring to the starter panel:

• Ve rif y that the star ter n ameplate ratings are
compatible with the power supply characteristics and
with the electrical data on the unit nameplate.

CVHH-SVX001A-EN 51

Power Supply Wiring

L3GL2 L1 L3GL2 L1

L3 L2 L1 G L3 L2 L1 G L3 L2 L1 G

L2

L3GL2L1 L3

G

L2L1

L3L1 G L3L2L1 G L3L2L1 G

Unit-Mounted Starters

Remote-Mounted Starters

• When installing the power supply conduit, ensure that
the position of the conduit does not interfere with the
serviceability of any of the unit components, or with
structural members and equipment. Ensure that the
conduit is long enough to simplify any servicing that
may be necessary in the future (e.g., starter).

• Electrical wire torque specifi cations—follow starter
man ufacturer’s torque specifications.

Circuit Breakers and Fused
Disconnects

Any field supplied circuit break er or fused disconnect
installed in power supplied to the chiller must be sized in
compliance with NEC or local guidelines.

CE for Control Power Transformer (CPTR)
Opt ion

Important: For the CPTR (Control Power Transformer)

option, ch iller mounted/UPS power, the
customer needs to ensure that the supply is
NOT taken from public low vo ltage
supplies, and that a dedicated clean source
of private power supply is used for chiller
mounted CPTR option when a CE chiller is
selected. This also includes when CPTR
option is standard such as in customer­supplied starters and remote-mounted
medium voltage AFDs.

All customer wiring, including power wiring to starters/
drives/CPTR Option/UPS shore power, needs to be
separated: 24–27 Vdc, 1 1 0–120 Vac, and 380–600 V ac eac h
need t o be in separate conduit runs.

For 110/120 V customer wiring, including main power
supply to CPTR option, it is required that the customer
provides some sort of surge protection ahead of it, and all
customer wiring needs to be run in flexible metal conduit
and grounded at both ends. Any ethernet cables being
used by customer to interface with the T rane chiller must
be shielded ethernet cabling.

The customer is required to provide an overcurrent device
upstream of the CPTR option in accordance with IEC
standards and/or any applicable local and national codes.

The customer is required to follow all local, national, and/
or IEC codes for installation.

Service personnel must use proper PPE for servicing and
should also use proper lockout/tagout procedures during
servicing. The customer should also disconnect the main
supply disconnecting device upstream of the starter or
drive first before performing any service on any part of the
chiller, including the CPT R option, related controls, and oil
pump motor circuits. In addition, service personnel should
first disconnect the supply disconnecting device upstream
of the CPTR option before performing any service on the
CPTR option or its related circuits. Lock the CPTR option
enclosure panel disconnect handle before servicing to
preven t accidental pulling of the disconnect handle.

CE for Starter or Drive

Important:

• All Trane-supplied remote starters and drives used in

conjunction with CVHH or CDHH T rane chillers will be
CE-complian t per EU directives and IEC standards to
which the CVHH and CDHH chi llers also comply. All
Trane-supplied remote starters and drives must be
used with CVHH or CDHH Trane chillers to ensure CE
compliance.

• For remot e starters and drives: Basic details ar e
provided on remot e starter/drive nameplate. Please
refer to the chiller unit nameplate located on the chiller
mounted control panel for details on wire sizing
(minimum current ampacity) and overcurrent
protection sizing upstream of the unit (maximum
over current protection).

• Always refer to as-built schematic wiring diagrams and
the chiller Installation, Operation, and Maintenance
manual located inside the chiller mounted control
panel (regardless of unit or remote-mounted starter or
drive) for details on wiring, safety, installati on, and
warnings.

• Refer to drive-speci fic Installation, Operation, and
Maintenance manuals for drive and option installation

specifics fo r un it- and remote-mounted adaptive
frequency drives.

52 CVHH-SVX001A-EN

• Customers are responsible for all field wiring wi th

X39003892001A

respect to EMC and EMI interference. Customers are
responsible to mitigate the risks associated with EMC
and EMI interference that can occur as a result of
customer-provided field wiring as dictated by
international, national, and local codes. This also
implies that for remote-mounted starters and drives,
customers are responsible for th e enti re field wiring
into the starter/drive as well as between the starter/
drive and the chiller/compressor terminals with
respect to EMC and EMI int erference. It also implies
that customers are responsible for incoming po wer
wiring to both the starter/d rive and CPTR option
enclosure unit-mounted panel with respect to EMC
and EMI interference.

All customer wiring, including power wiring to starters/
drives/CPTR Option/UPS shore power, needs to be
separated: 24–27 Vdc, 1 1 0– 1 20 Vac, and 380–600 Vac each
need to be in separate conduit runs.

F or 1 10/120V customer wiring, including power supply to
CPTR op tion, it is required that the customer provides
some sort of surge protection and all customer wiring
needs to be run in flexible metal conduit and grounded at
both ends.

For remote starters interfaci ng with the Trane chiller, all
wiring needs to be run in flexible metal conduit and
grounded at both ends. Any ethernet cables being used by
customer to interface with the Trane chiller must be
shielded ethernet cabling.

The customer is required to provide an overcurrent
protective device upstream of all starters and drives in
accordance with IEC standards and/or any applicable local
and national codes.

Service personnel must use proper PPE for servicing and
should also use proper lockout/tagout procedures during
servicing: lock the starter disconnect handle before
servicing to prevent accidental pulling of disconnect
handle at the starter panel. In addition, service personnel
should first disco nnect the main supply disconnecting
device upstream of the starter or drive before performing
any service on any part of the chiller.

Power Supply Wiring

WARNING

Lockout/Tagout Before Removing Touch­Safe Covers!

Failure to follow instructions regarding touch-safe
cov ers c ould r es ult in death or serious in jury. Touc h-s af e
covers inside panels are there for protection and may
be removed if necessary for service only and only after
disconnection of main power supply. Before removing
any touch-safe co v er, ensure that there is no line power
first. Removal of touch-safe covers would be at the
customer/ service personnel’s own risk. After any
servic e is completed, if the touch-safe covers have been
removed, the touch-safe covers need to be put back in
to ensure safety and protection.

CVHH-SVX001A-EN 53

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

For CE units, the convenience outlet in the control panel
requires a suitable adaptor to meet the needs of customers
with different plug requirements.

Power Supply Wiring

Control Power Transformer (CPTR) Option

The CPTR option provides a means to isolate the incoming
line voltage required for the chiller control circuits and the
oil/refrigerant pump from the compressor incoming line
voltage. The CPTR option provides a solution for
customers that cannot afford to lose communication with
the chiller or extended restart times due to lost incoming
power.

The CPTR option will be nefit:

• UPS customers

• Customers requiring fast restarts

• Customers who need controls sourced from a clean
dedicated source

• Customers with building automation /communication
systems who want to maintain chiller status reporting
during power loss

• Chillers with remote-mounted medium-voltage AFDs
or customer-supplied starters

NOTICE:

CPTR Option Enclos ure Panel Damage!

Failure to remove debris from inside the CPTR option
enclosure panel could result in an electrical short and
could cause serious component damage.

Service personnel are requir ed to ensure that the
incoming power supply voltage provided by the customer
to the CPTR option enclosure unit-mounted panel is as per
submittal and nameplate.

Power Factor Correction
Capacitors (Optional)

P ower factor correction capacitors (PFC Cs) are designed to
provide power factor correction for the compressor motor.
PF CC s are available as an option for unit-mounted starters
and remote mounted starters.

Notes:

• Verify PFCC voltage rat ing is greater than or equal to

the compressor vol tage r ating stamped on th e unit
nameplate.

• R efer to the wiring diagrams that shipped with the unit
for specific PFCC wiring information.

The stan dard unit-mounted CPTR option shall have an
enclosure with a disconnect and will require customer­supplied power.

CVHH and CDHH chillers have a low-voltage CP TR option
and a medium-volta ge CPTR option.

The CPTR op tion involves a sin gle phase 4kVA
transformer(s) and the oil pump motor circuit to be located
together in an enclosure th at is unit-mounted. There is
3-phase line power between 380–600 Vac feeding this
enclosure. Wherever the 4kVA transformer is located, the
oil pump motor circuit will be located along with it.

With the CPTR option, the control power transformer(s)
and oil pump motor circuit are NOT inside of the starter.

For the low-vol tage CPTR option, the single phase 4kVA
transformer feeds the 120 V control power to all of the
controls. The three-phase line power feeds a motor starter
and overload oil pump motor circuit which feeds the
three-phase oil pump motor .

F or the medium-voltage CPTR option, there are two single­phase 4-kVA transformers: one of the 4 kVA transformers
feeds the 120 V control power to all of the controls. The
second transformer feeds a combination motor controller
oil pump motor circuit which then feeds a single-phase oil
pump motor.

Note: Refer to the unit nameplate for maximum

overcurrent protection and minimum current
ampacity values for connecting to the CPTR option
enclosure.

54 CVHH-SVX001A-EN

NOTICE:

X39003892001A

Motor

Fuses

Enclosed

3-phase

capacitor

unit

Fuse d
disconnect
or suitable

breaker

Power
circuit

1
2

3

Current

tran sformer

Motor starter

contactor

Mo tor Damage!

Failure to wire PFCCs into the starter correctly could
cause misapplication of these capacitors and r esult in a
loss of m otor overload protection and subsequently
cause motor damage.

Power Supply Wiring

PFCCs must be wired one of two ways as
sho wn as explained in the following (Option 1
and Option 2).

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

CVHH-SVX001A-EN 55

Power Supply Wiring

X39003892001A

Motor

Fuses

Enclosed

3-phase

capacitor

unit

Fused
disconnect
or suitable

breaker

1

2

3

Current

transformer

Motor starter

contactor

Option 1—PFCCs installed downstream of
starter contactor, upstream of current
transformers.

WARNING

Hazardous Volt age w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharg e all motor start/ run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. V er ify with an appropriate voltmeter that all
capacitors have discharged.

For additional inf ormation regarding the safe discharge of
capa citors, see PROD-SVB06*-EN

the electrical distribution system. A leading power
factor—too much capacitance—may eventually develo p.
This overprotection causes poor voltage regulatio n (i.e.,
voltage is high when the circuit is unloaded, then drops as
loads are ad ded).

Option 2—PFCC wires routed through current
transformers.

Size motor overload protection t o account for capacitor­supplied current. Overloads are typi cally 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 th e
PFCCs upstream of the current transformers as shown in
the preceding figure. If the capacitor connection points are
downstream of the current transformers, route the PFCC
leads through the cu rrent transformers as shown in the
following figure. This ensures that the overloads register
both line and capacitor-supplied current.

No te: Graphic labels (shown above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharg e.

• All electrical enclosures—unit or remote—are IP2X.

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

56 CVHH-SVX001A-EN

Interconnecting Wiring

T ypical equipment room conduit layouts with and without
unit-mounted starters are shown in

Figure 31.

Important: The interconnecting wiring between the

starter panel, compressor, and control
panel is factory-installed with unit-mounted
starters. However, when a remote-mounted
starter is used, the interconnecting wiring
must be field-installed.

Note: Refer to starter submittal drawing for location of

incoming wiring to the starter.

Figure 30 and

Power Supply Wiring

2

3

1

1

2

3

4

6

7

5

Figur e 30. T ypic al equipment room layout for units with

unit-mounted starters

1. Line side power conduits

2. Unit-mounted starter

3. Unit control panel

Figur e 31. T ypic al equipment room layout for units with

remote-mounted starters

Figure 31. Typical equipment room layout for units with

remote-mounted starters

1. Line side power conduits

2. Remote-mounted starter

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

5. Motor terminal box

6. 115 V Control conduit

7. Lead power wiring

panel (304.8 m [ 1000 feet ] max).

Note: Must enter the higher than 30 Vdc Class 1 port ion of the until

control panel.

Notes:

• Refer to the unit field connection diagram for approxim ate unit

control panel knock out locations.

• To prevent dam age to the unit control panel components, do not

route control conduit into the top of the box.

Starter to Motor Wiring (Remote­Mounted Starters Only)

Ground Wire Terminal Lugs

Ground wire lugs are provided in the motor terminal box
and in the starter panel.

CVHH-SVX001A-EN 57

Power Supply Wiring

X39003892001A

2

1

3

4

5

Terminal Clamps

NOTICE:

Use Copper Conductors Only!

Failure to use copper conductors could result in
equipment damage as unit terminals are not designed
to accept other types of conductors.

Note: Wire size ranges for the starter line and load-

side lugs are listed on the starter submittal
drawings supplied by the starter manufacturer
or Trane. Carefully review t he sub mitted wire
lug sizes for compatibility with the conductor
sizes specified by the electrical engineer or
contractor.

• On 600 V and below, a terminal clamp with a

9.525-mm (3/8-in.) bolt is provid ed on each motor
terminal stud; use the factory-supplied Belleville
washers on the wire lug connections.

Figure 32

illustrates the junction between a motor terminal stud
and terminal lug.

Figure 32. Terminal stud, clamp, and lug assembly

(600 V and below)

No te: Graphic labels (shown above) are u sed for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

T erminal clamps are supplied with the motor terminals to
accommodate either bus bars or standard motor terminal
wire lugs. Terminal clamps provide additional surface area
to minimize the possibility of improp er electrical
connectio ns.

Wire Terminal Lugs

Wire terminal lugs must be field supp lied.

• Use field-provided, crimp-type wire terminal lugs
properly sized for the application.

1 . Belleville washer

2. Terminal lugs

3. Terminal clamp

4. Motor terminal stud

5. Terminal mounting bolt

• Torque for this assembly is 32.5 N·m (24 ft·lb).

• Install but do not connect the power leads between the
starter and compressor motor. (These connections will
be completed under supervision of a qualified Trane
service engineer after the pre-start in spection.)

NOTICE:

Component Damage!

F ailure to ensur e the power supply wiring and output to
motor wiring are connected to the proper terminals.
could cause catastrophic failure of the starter and/or
motor.

Bus Bars

Bus bars and extra nu ts are available as a Trane option.
Install the bus bars between the motor terminals when

using a starter that is:

• a low-voltage AFD

• across-the-line

• primary reactor/resistor

• auto transformer

• customer-supplied

58 CVHH-SVX001A-EN

Connect T1 to T6, T2 to T4, and T3 to T5.

X39003892001A

No te: Bus bar s are not needed in medium-voltage or

high-voltage applications since only 3 terminals
are used in the motor and starter.

Starter to Control Panel Wiring

The unit submittal includes the field wiring connection
diagram and the starter-to-control-panel connection
diagram (showing the electrical connections required
between the remot e-mounted starter and the control
panel).

No te: Install separate conduit into the low voltage

(30 v olts) section of the control panel.

When sizing and installing the electrical conductors for
these circuits, follow the guidelines listed. Use 14 AWG for
120V control circuits unless otherwise specified. For AWG/
MCM equivalents in mm

Component Damage!

Remove all debris from inside the starter panel. Failu re
to do so could result in an electrical short and could
cause serious starter component damage.

2

, refer to

NOTICE:

Table 12, p. 47.

Power Supply Wiring

WARNING

Proper Field Wiring and Grounding
Required!

Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards , y ou MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/ stat e/national electrical codes.

Important: Maintain at least 16 cm (6 in.) between low-

voltage (<30V) and high voltage circuits.
F a ilure 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
gui delines 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, t wisted-pair wiring for the
Interprocessor Communication (IPC) circuit between
the starter and the con trol panel on remote mounted
starters.

No te: Recommended wire is Beldon Type 8760,

18 AWG for runs up t o 304.8 m (1000 f t). For
AWG/MCM equivalents in mm

Table 12, p . 47. The polarity of the IPC wiring is

critical for proper oper atio n.

• Separate low-voltage (less than 30V; refer to

p. 48

) wiring from the 115V wiring by running each in

its own conduit.

• When routing the IPC circuit out of the starter
enclosure, ensure that it is at least 16 cm (6 in.) from all
wires carrying a higher voltage.

CVHH-SVX001A-EN 59

2

, refer to

Table 13,

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

• The IPC wiring shield should be grounded on one end

only at control panel end.The other end should be un­terminated and taped back on the cable sheath to
prevent any con tact between shield and ground.

• Oil Pump Interlock: All starter s must p rovide an
interlo ck (normally open) contact with the chiller oil
pump connected to the control panel at terminals
1X1-10 and 1X1-21 (14 AWG; for AW G/MCM
equivalen ts in mm
purpose of this interlock is to maintain the oil pump
signal in the event that a starter failure, such as welded
contacts, keeps the chiller motor runnin g af ter the
controller interrupts the run signal.

2

, refer to

Table 12, p. 47.) The

Medium Voltage Installation

X39003892001A

1219

633

949

A

889.1

457.2

673.6

B

737

203

670

C

WARNING

Hazardous Voltage!

Failure to disc on nect power before servicing could
result in deat h or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
F ol low proper lockout/ tagout procedures to ensure the
power can not be inadvertently energized.

autotransformer, or solid-state starting. Refer to the unit
nameplate for motor data including RLA, LRA, etc.

In all cases of non-Trane supplied starters, the Trane
Engineering Specification for UC800 Starter By Others
(available through your local Trane office) must be
followed in order to ensure proper function and protection
of the chiller. A disconnecting means and short-circui t
protection must be installed ahead of the starter, unless
they are included as part of the starter.

Note: Trane assumes no responsibility for the design,

documentation, construct ion, compatibility,
inst allation, start-up, or long term support of
starters provided by oth ers.

Motor Terminal Box

A large steel motor terminal bo x is provided to allow for
the field connection of the motor power supply wire to the
motor. There are three sizes available depending on
voltage and motor frame size.

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

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.

Medium Volt age Motor

The motor is suitable for remote mounted across-the-line
(including circuit breaker starting), primary reactor,

60 CVHH-SVX001A-EN

Medium Voltage Installation

X39003892001A

Box W eight ( kg) Volt Range

A256

B117.3

C58.5

Note: Lifting holes are 14.3 mm .

(a) Motor term inal box cover-only weight is 24.9 kg ( 55 lb).

(a)

6000–13.8kV
Fram e 6800, 6800L

2300–13.8kV
Fram e 440E, 5000, 5800, 580 L

380–600 Vac
Fram e 440E, 5000

Note: If the box is removed for installation purposes, the

motor terminals MUST be protected against
impact or stress damage. Field fabricati on of a
cover or guard is req uir ed.

• The motor terminal box is large enough to
accommodate the use of stress cones.

• If conduit is applied, a flexible connection of the
conduit to the box should be made to allow for unit
serviceability and for vibration isolation. The cable
should be supported or protected against abrasion and
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. Alway s ensur e that
debris does not remain in the box after cutting cable
entry holes.

Motor Supply Wiring

WARNING

Proper Field Wiring and Grounding
Required!

Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards , y ou MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/ stat e/national electrical codes.

CVHH-SVX001A-EN 61

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

Motor circuit wire sizing by the installer must be made in
accordance with the National Elect ric Code or any other
applicable codes

.

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 o r ionization with cables carrying
more than 2000V, T rane requires that the power cable have
a metallic shield, unless the cable is speci fically listed or

Medium Voltage Installation

approved for non-shielded use. If the cable is shielded, the
shielding must be grounded at one end (grou nding is
typically done at the starter or supply end).

Care must be taken while routing the inco mi ng cables to
ensure that cable loads or tensions are not applied to the
terminal or premature terminal failure could resu lt.

Motor Terminals

Field-provided, ring-type lugs, with no sharp edges or
corners, must be used by a qualified installer to co nnect
the power wiring to the motor terminals. Follow all
instructions provi ded with the fi eld-provided lugs to
ensure proper connections.

Important: The use of stress cones is hig hly

recommended to reduce and control
longitudinal and radial electrical stresses at
the cable ends.

P rior to assembly the terminal stud, nuts, and lug should
be inspected and cleaned to ensure they are not damaged
or contaminated. When attaching starter leads to 2.3–

6.6 kV motor terminals, the M14x2 brass jam nuts should

be tightened to a maximum torque of 32.5–40.7 N·m (24–
30 ft·lb). Always use a second wrench to backup the
assembly and prevent applying excessive torque to the
terminal shaft.

Note: 6.0kV and 6.6kV motors on 6800 or 6800L frames

(see compressor model number for motor frame)
use the same motor terminals as the 10kV–13.8kV
motors.

The motor terminal on a 10–13.8kV motor h as a copper
shaft that is threaded M14 x 2–6 G. Brass nuts are provided
on t he motor terminals to retain the lugs, and the final
connection shou ld be tightened to 32.5–40.7 N·m (24–
30 ft·lb).

chiller with the motor terminal box cover removed or with
any loose or missing cover bolts.

NOTICE:

Motor Terminal Damage!

Applying torque to the motor terminal when tightening
lugs could cause equipment or property-only damage.
Always use a second wrenc h to back-up the assembly
and prevent the application of torque t o the termin al
shaft.

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. For
AW G/MCM equivalents i n mm
After completing the field co nnect ion of wiring, i nspect
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 instal led. Do not operate the

62 CVHH-SVX001A-EN

2

, refer to

Table 12, p. 47.

System Control Circuit Wiring (Field Wiring)

Table 18. Unit control panel wiring 120 Vac

Standard Control Circuits: Uni t
Cont rol Panel Co ntrol Wiring
( 12 0 Vac) Unit Control Terminations I nput or Output Type Contacts

Chilled Water Flow Proving I nput

Con denser Water Flow Proving Input

Chilled Water Pump Relay Output 1K15-J2-4 to 6 Binary Output Normally Open
Condenser Water Pump Relay Output 1K15-J2-1 to 3 Binary Output Normally Open

(a)

(b)

1X1-5 to 1K16-J3-2 Binary Input Normally Open, closure

w ith flow

1X1-6 to 1K16-J2-2 Binary Input Normally Open, closure

w ith flow

Optional Control Circuits

Note: Defaults are factory program med, alternates can be selected at start-up using the service tool.

( 12 0 Vac)

Alarm Relay MAR ( Non-Latching) Output 1K19-J2-1 to 3 Binary Ou tput Normally Open
Limit Warning Relay Output 1K19-J2-4 to 6 Binary Output Normall y Open
Alarm Relay MMR ( Latching) Output 1K19 -J2- 7 to 9 Binary Outpu t Normally Open
Compressor Running Relay Output 1K19-J2-10 to 12 Binary Output Normally Open
Maximum Capacity Relay Output 1K20-J2-1 to 3 Binary Output Normally Open
Head Relief Request Relay Output 1K20-J2-4 to 6 Binary Output Normally Open
Purge Alarm Relay Output 1K20-J2-7 to 9 Binary Output Normally Open
Ice Making Relay Output 1K15-J2-10 to 12 Binary Output Normally Open
Free Cooling Relay Output 1K21-J2-4 to 6 Binary Output Normally Open

Standard Low Voltage Circuits
( less than 30 Vac)

External Auto Stop Input 1K2-J2-1 to 2 Binary I nput Closure required for

Emergency Stop Input 1K2-J2- 3 to 4 B inary Input Closure required for

( c)

U nit Control Panel
Terminations

I nput or Out put Type Contacts

normal operation

normal operation

Optional Low Voltage Circuits

External Base Loa ding Enable Input 1K8-J2-1 to 2 Binary I nput Norm ally Open
External Hot Water Control Enable I nput 1K8-J2-3 to 4 Binary Input Norm ally Open
Exte rnal Ice Machine Contr ol En able Input 1K9-J2-1 to 2 Binary Input Normally Open
External Free Cooling I nput Enable I nput 1K10-J2-1 to 2 Binary I nput Nor m ally Open
% RLA Compressor Output 1K5-J2-1 to 3 Analog Output 2–10 Vdc
External Condenser Pressure Output 1K5-J2-4 to 6 Analog Output 2–10 Vdc
Evaporator/ Condenser Diff erential Pressure

Output
Condens er Head Pressure Control 1K5-J2-4 to 6 Analog Output 2–10 Vdc
External Current Lim it Setpoint Input 1K6-J2-2 to 3 Anal og I nput 2–10 Vdc, or 4–20 mA
External Chilled Water Setpoint Input 1 K6-J2-5 to 6 Analog Input 2–10 Vdc, or 4–20 mA
External Base Loa ding Setpoint I nput 1K7-J2-2 to 3 Analog Input 2–10 Vdc, or 4–20 mA
Generic Refrigerant Monitor input 1K7-J2-5 to 6 Anal og I nput 2–10 Vdc, or 4–20 mA
Outdoor Air Temperature sensor IPC bus Connection and sensor Comm unication an d sensor
Tracer Com m 4 Interface 1K3-J2- 1(+ ) to 2(- )

BACnet or MODBUS 1K1, 5(+ ) to 6(-) Commun ication to BA Cnet or

LonTalk Com m 5 interface

Note: All wiring to be in accordance with National Electrical Codes and any local codes

(a) If the Chilled Water Flow Proving I nput is a factory-installed ifm efector flow-sensing device, the secondary field device (recommended with 3.3°C [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 jum per 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 1X1-6 to 1K27-4 (binary input; normally open, closure with flow). Remove factory j umper when used.

1K5-J2-4 to 6 Analog Output 2–10 Vdc

1K3-J2-3(+ ) to 4(-)

1K4-J2-1(+ ) to 2(-)
1K4-J2-3(+ ) to 4(-)
Left Panel

Communication to Tracer (as ordered, see sales

MODBUS

Communication to LonTalk

order)
(as ordered, see sales

order)
(as ordered, see sales

order)

CVHH-SVX001A-EN 63

System Cont rol Circuit Wiring (Field Wiring)

X39003892001A

(c) Standard low-voltage circuits (less than 30 Vac) must be separat ed from 120 Vac or higher wiring.

Water Pump Interlock Circuits and Flow
Switch Input

WARNING

Hazardous Voltage!

Failure to disc on nect power before servicing could
result in deat h or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
F ol low proper lockout/ tagout procedures to ensure the
power can not be inadvertently energized.

2. Connect circuit to 1K15-J2-6.

3. Use 1K15-J2-4 120 Vac output to allow the control
panel to control the evaporator water pump, or wire
the 5K1 contactor to operate remotely and
independently of the control panel.

Chilled water proof of flow

When this circuit is installed properly and the evaporator
pump is running and providing the required minimum
flow, this circuit will prove the evaporator water flow for
the chiller controls. Proof of evaporator water flow is
required before the start sequence will be allowed to
proceed and a loss of evaporator water flow during chiller
operatio n will result in a chiller shut-d own.

Re fer to as-built schematics on the inside of the control
panel for field wiring. This is a dry binary input; normally­open, closure for flow. Apply no external power.

1. With factory-installed ifm efector flow-sensing
devices, a field-provided secondary flow-sensing
device is recommended with applications having 3.3° C
(38°F) and below leaving evaporator water
temperatures. When a secondary flow-sensing device
is used, remove the factory jumper and install its
contacts between 1X1-5 t o 1K26-4; this places the
secondary flow sensing device in series with the
ifm efector.

2. For field-provided primary proof o f fl ow devices,
connect the primary proof o f flow device between
terminals 1X1-5 to 1K16-J3-2. A secondary field device
is recommended with applications having 3.3°C (38°F )
and below leaving evaporator water temperatures,
and must be field-wired in series with the primary
proof o f flow device.

No te: Graphic labels (shown above) are u sed for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.
Note: The circuits for the chilled water proof of flow and

the condenser water proof of flow do NOT require
external power. Re fer t o the wiring diagrams that
shipped with the chiller.

Chilled water pump

1 . Wire the evaporator water pump contactor (5K42) to a

separate 120 volt single phase power supply with
14 AWG, 600 volt copper wire. For AWG/MCM
equivalents in mm

64 CVHH-SVX001A-EN

2

, refer to

Table 12, p. 47.

Condenser water pump

1 . Wire the condenser water pump contactor (5K43) to a

separate 120-vo lt, single phase power supply with
14 AWG, 600-volt copper wire. For AWG/MCM
equivalen ts in mm

2. Connect circuit to control panel terminals 1K15-J2-3.

3. Use 1K15-J2-1 120 Vac output to allow the control
panel to control the condenser pump.

2

, refer to

Table 12, p. 47.

Condenser water proof of flow

When this circuit is installed properly and the condenser
pump is running and providing the required minimum
condenser water flow, this circuit will prove the condenser
water flow for the chiller controls. Proof of condenser
water flow is also required for the start sequence will be
allowed to proceed and a loss of condenser water flow
during chiller operation will result in a chiller shut-down.

Re fer to as-built schematics on the inside of the control
panel for field wiring. This is a dry binary input; normally­open, closure for flow. Apply no external power.

System Control Circuit Wiring (Field Wiring)

2

4

0

p

1

3

9

7

w

q

5

ty

er

ty

er

8

]a\

See Detail A

See Detail B

De tail A

De tail B

ty

er

=q

[

u

o

f

6

sd

-

i

1. With factory-installed ifm efector flow-sensing
devices, a secondary field-provided flow-sensing
device is optional. When a secondary flow-sensing
device is used, remove the factory jumper, and install
its contacts between 1X1-5 to 1K27-4; this p laces the
secondary flow sensing device in series wi th the
ifm efector.

2. For f ield -provided primary proof of flow devices,
connect the primary proof of flow device between
terminals 1X1-6 to 1K16-J2-2. The secondary field
provided flow sensing device is optional; however,
when it is present, it must be field-wired in series with
the primary pro of of flow device.

Figure 33. CVHH sensor locations

Temperature Sensor Circuits

All temperature sensors are factory installed except the
optional outdoor air temperatu re sensor (refer to

Figure 33, p. 65 for senso r lo cations). Thi s sensor is

required for the outdoor air temperature type of chilled
water reset. Use the following guidelines to locate and
mount the outdoor air t emperature sensor . Mount the
sensor probe where needed, however, mount the sensor
modul e in the control panel.

1 . Tracer AdaptiView display module
2 . Motor winding t emperature 1
3 . Motor winding t emperature 2
4 . Motor winding t emperature 3
5 . Oil pump discharge pressure transducer
6 . Oil t ank pressure transducer
7 . Evaporator water differential pressure transducer
8 . Condenser water differential pr essure transducer
9 . Compressor discharge refrigerant temp erature sensor
1 0.Evaporator saturated refrigerant temperature sensor
1 1.Condenser saturated refrigerant temperature sensor
1 2.Second condenser entering water temperature sensor ( used on HTRC)
1 3.Second condenser leaving wat er temperature sensor (used on HTRC)
1 4.Oil tank temperature sensor
1 5.Evaporator entering water temperature sensor

1 6.Evaporator leaving water temperature sensor
1 7.Condenser entering water temperature sensor
1 8.Condenser leaving water temperature sensor
1 9.Inboard bearing temperature sensor
2 0.Out board bearing temperat ure sensor
2 1.Oil cooling solenoid valve
2 2.Inlet guide vane first stage actuator
2 3.Inlet guide vane second stage actuat or
2 4.Out board bearing pad temperature sensor 1
2 5.Out board bearing pad temperature sensor 2
2 6.Out board bearing pad temperature sensor 3
2 7.Condenser high pressure cut out switch
2 8.Condenser refrigerant pressure transducer
2 9.Oil tank vent line valve

CVHH-SVX001A-EN 65

System Cont rol Circuit Wiring (Field Wiring)

CWR—Outdoor Option

The outdoor temperature sensor is similar to the unit­mounted 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
communications link. Trane recommends mounting the
sensor module within the control panel and the sensor two
wire leads be extended and routed to the outdoor
temperature sensor probe sensing location. This ensures
the four-wire IPC bus protection and provides access to the
module for configuration at start-up.

The sensor probe lead wire between the sensor probe and
the mod ule can be separated by cutting the t wo-wire
probe lead leaving equal lengths of wire on each d evice:
the sensor probe and the sensor module.

No te: This sens or and module are matched and must

remain t ogether or inaccuracy may occur.

These wires can then be spliced with two 14–18 AWG 600V
wires of sufficient length to reach the desired outdoor
location with a maximum length 304.8 meters (1000 feet).
For AWG/MCM equivalents in mm

. The module four-wire bus must be connected to the

p. 47

control panel four-wire bus using th e Trane-approved
connectors provided.

The sensor will be configured (given its identity and
become functional) at start-up when the Trane service
technician performs the start-up configuration. It will NOT
be operational until that time.

Note: If shielded cable is used to extend the sensor leads,

be sure to cover the shield wire with tape at the
junction box and ground it at the control panel. If
the added length is run in conduit, do not run them
in the same conduit with other circuits carrying 30
or more volts.

Important: Maintain at least 16 cm (6 in.) between low-

voltage (<30V) and high voltage circuits.
F a ilure to do so could result in electrical
noise that may distort the signals carried by
the low-voltage wiring, including the IPC.

2

, refer to

Table 12,

Unit Start-up/Commissioning

Important: Start-up must be performed by T rane or an

agent of Trane specifically authorized t o
perform start-up and warranty of Trane
products. Contractor shall provide Trane (or
an agent of T rane specifically authorized to
perform start-up) with notice of the
scheduled start-up at least two weeks prior
to t he scheduled start-up.

®

Starter Module Configuration

The starter module configuration settings will be checked
(and configured for Remote Starters) during start-up
commissioning.

Note: To configure starter modules, and perform other

starter checks, it is recommended th at the line
voltage t hree-phase power be turned off and
secured (locked out), and then that a separate
source control power (1 15 Vac) be utilized to power
up the control circuits.

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 1 1 5 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.

Opt ional Control and Output Circuits

Install various optional wiring as required by the owner’s
specifications (see

Table 18, p. 63).

Optional Tracer Communication Interface

This control option allows the control panel to exchange
information—such as chiller status and operating set
points—with a Tracer system.

No te: The cir c uit mu st be r un in separate conduit to

prevent electrical noise interference.

Additi onal information about the Tracer Communication
interface option is published in the installation and
operation guide that ships with the Tracer.

66 CVHH-SVX001A-EN

Operating Principles

condenser

high side economizer

evaporator

2

3

4

P

1

P

3

P

2

P

4

Pressure

compressor
(3rd stage)

low side economizer

compressor
(2

nd

stage)
com pressor
(1st stage)

5

6

7

8

1

General Requirements

Operation and maintenance information for CVHH 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 app licable and
described separately. By carefully reviewing this
informatio n and following the instructions given, the
owner or operator can successfully operate and maintain
a CenTraVac unit. If mechanical problems d o occur,
however, contact a Trane service technician to ensure
proper di agnosis and repair of the unit.

Cooling Cycle

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 d rawn th rough
the eliminators (which remove droplets of liquid
refrigerant from the gas) and the first stage variable inlet
guide vanes, and into the f irst-stage impeller.

Figure 34. Pressure enthalpy curve, 3-st age

Figure 35. Refrigerant flow, 3-stage

CVHH 3-Stage Compressor

Compressed gas from the f irst-stage impeller flows
through the fixed, second-stage inlet vanes and into the
second-stage impeller. Here, the refrigerant gas is again
compressed, and then discharged through the third-stage
variable guide vanes and int o the third-stage impeller.
Once th e gas is compressed a third time, it is discharged
into the condenser. Baf fles within the condenser shell
distribute the compressed refrigerant gas evenly across
the condenser tube bundle. Cooling tower water circulated
throug h the condenser tubes absorbs heat fro m the
refrigerant, causing it to condense. The liquid refrigerant
then passes through an orifice plate and into the
economizer.

The economizer reduces the energy requirements of the
refrigerant cycle by eliminating the need to pass all
gaseous refrigerant through three stages of compression
(see

Figure 35, p. 67). Notice that some of the liqui d

refrigerant flashes to a gas because of the pressure drop
created by the orifice plates, thus further cooling the liquid
refrigerant. This flash gas is then drawn directly from the
first and second stages of the economizer int o the third­and second-stage impellers of the compressor,
respectively. All remaini ng liquid refrigerant flows
through another orifice plate to the evaporator.

CVHH-SVX001A-EN 67

CVHH 2-Stage Compressor

Compressed gas from the first-stage impeller is
discharged through the second -stage v ariable guide
vanes and into the second-stage impeller. Here , the
refrigerant gas is again compressed, and then discharged
into the condenser. Baffles within the condenser shell
distribute the compressed r efri gerant gas evenly across
the condenser tube bundle. Cooling tower water,
circulated through the condenser tubes, absorbs he at
from the refrigerant, causing it to condense. The liquid
refrigerant then flows out of the bottom of the condenser,
passing through an orifice plate and into the economizer.

The economizer reduces the energy requirements of the
refrigerant cycle by eliminating the need to pass all
gaseous refrigerant through both stages of compression
(see

Figure 37). Notice that some of the liquid refrigerant

flashes to a gas because of the pressure drop created by
the orifice plate, thus further cooling the liquid refrigerant.
This flash gas is then drawn directly from the economizer
into the second-stage impellers of the compressor. All
remaining liquid refrigerant flows out of the economizer,
passes through another orifice plate and into the
evaporator.

Operating Principles

condense r

economizer

evaporator

2

3

4

P

1

P

2

P

3

Pressure

com pressor
(2nd stage)

com pressor
(1st stage)

1

5

6

Figure 36. Pressure enthalpy curve

Figure 37. Refrigerant flow, 2-stage

Oil and Refrigerant Pump

Compressor Lubrication System

A schematic diagram of the compressor lubrication
system is illustrated in
the oil tank (by a pump and motor located within the tank)
throug h an oil pressure regulating valve d esigned to
maintain a net oil pressure of 137.9 to 165.5 kPad (20 to
24 psid). It is then filtered and sent to the braze plate heat
exchanger oil cooler located above the oil tank and on to
the compressor motor bearings. From the bearings, the oil
drains back to the oil tank.

Figure 38, p. 69. Oil is pumped from

68 CVHH-SVX001A-EN

Figure 38. Oil refrigerant pump

Compressor lubrication system
Motor cooling system
Oil reclaim s ystem

2

1

3

4

5

6

7

8

9

10

11

17

18

19

12

13

20

14

16

15

22

21

Operating Principles

1. Motor coolant return to condenser,

53.975 mm (2.125 in.) OD

2. Oil tank vent lin e , 53.975 mm (2.125 in.) OD 13. Purge

3. Vent line actuated ball valve 14. Compressor

4. Condenser 15. Liquid refrigerant motor coolant supply,

5. High pressure condenser gas to drive oil reclaim
eductors, 9.525 mm (0.375 in.) OD

6. Oil return to tank 17. Liquid refrigerant to evaporator

7. Oil tank 18. Evaporator

8. Oil cooler braze plate heat exchanger 19. Oil reclaim from suction cover (1

9. Oil re claim fr om evapo rato r (2

6.35 mm (0.25 in.) OD

10. Liquid refrigerant to pump, 41.275 mm (1.625 in.) OD 21. Oil tan k junction box enclo sure

11. Economizer 22. Oil pump motor terminal box

nd

CVHH-SVX001A-EN 69

eductor),

12. Oil supply to bearings, 22.225 mm (0.875 in.) OD

16. Liquid r efrigerant to economizer

20. Motor coolant filter

28.575 mm (1.125 in.) OD

6.35 mm (0.25 in.) OD

st

eductor),

Operating Principles

X39003892001A

WARNING

Hot Surface!

Failure to use caution while wo rking on the oil system
could result in severe burns. Oil system temperat ure
could exceed 65.6°C (150°F).

WARNING

Hazardous Voltage in Oil Tank Junction
Box Enclosure and Oil Pump Motor
Terminal Box!

Failure to disconnect main power and/or auxiliary
control power before opening oil tank junction box
enclosure or any other junction box/terminal box/panel
on the CVHH and CDHH chiller can result in death or
serious injury. Apply lockout/tagout devices and follow
all company procedures for lockout/ tagout. Unit must
be tested to ensure a zero energy state and equipment
must be put in an electrically safe work condition prior
to maintenance. Hazardous voltage up to 600 Vac is
present in the oil tank junction box enclosure and oil
pump motor terminal box.

T o ensure proper lubrication and prevent refrigerant from
condensin g in the oil tank, two 750-watt heaters are in
wells in the oil tank and are used to heat the oil while the
unit is off. With the default settings, the oil heaters are de­energized when the unit starts. The heaters energize as
needed to maintain 53.3°C to 56.1°C (128°F to 133°F) when
the chiller is no t running.

When the chi ller is operating, the temperature of the oil
tank is typically 37.8°C to 60.0°C (100°F to 140°F). The oil
return lines are routed into a separation chamber in the oil
tank. Gas flow exits out the top of the oil tank and is vented
to the evaporator.

A dual eductor system, using high pressure condenser
gas, reclaims oil from the suction cover and the
evaporator. The suction cover eductor is discharged into
the evaporator, and the evaporator eductor is discharged
into the oil tank. The evaporator eductor line has a shut-off
valve mounted on the evaporator. Normally, t he valve
should be 3/4 to one turn open. Open up to two turns if
necessary.

Oil supply to both the thrust bearing and journal bearings
is cooled when the oil tank temperatur e reaches 60.0°C
(140°F ). The supply oil and li quid refrigerant are pumped
to a brazed plate heat exchanger. The unit controller
monitors oil tank temperature and opens a solenoid valve
to allow liquid refrigerant to flow into the heat exchanger.

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharg e.

• All electrical enclosures—unit or remote—are IP2X.

Motor Cooling System

Compressor motors are cooled with liquid refrigerant (see

Figure 38, p. 69). The refrigerant pump is located on the

front of the oil tank (motor inside the oil tank). The
refrigerant p ump inlet is connected to the well at the
bottom of the condenser. The well design ensures
preferential supply of liquid ref rigerant to the refrigerant
pump before refrigerant is supplied to the economizer.
R efrigerant is delivered to the motor via the pump. An in­line 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 report s.

Day-to-day operational information is presented at the
display. Logically organized groups of info rmation—
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).

70 CVHH-SVX001A-EN

Operating Principles

RuptureGuard

The rupture disk monitors the pressure inside the chiller. If
the pressure exceeds the disk’s burst setting, the disk
ruptures allo wing the chi ller pressure to enter the valve
holder compartment upstream of the relief valve. If the
pressure is above the pressure setting of the relief valve,
the valve will open allowing only the amount of refrigerant
to escape to keep the pressure within safe operating limits.

The excess flow valve maintains the downstream side of
the rupture disk at atmospheric pressure to assure proper
operating conditions for the disk. When the disk bursts, the
rapid pressure increase causes the excess flow valve to
seal and the valve holder area becomes pressurized.

A disk rupture will be indicated by a pressure reading on
the gauge and the pressure switch contacts will close. The
pressure switch is an optional accessory and does not wire
to the control panel. The pressure switch can be connected
to a customer-supplied building automation system
(BAS).

EarthWise Purge

Centrifugal chillers that use low-pressure refrigerants,
such as R-1233zd(E), operate with areas of the chiller at less
than atmospheric pressure. Non-condensables in the air,
such as water and nitrogen vapor, may leak into these low­pressure areas and accumulate in the condenser. If these
non-condensables are not removed, the condenser loses
its ability to condense refrigerant efficiently, and the
pressure of the condenser increases. Increased condenser
pressure lowers the chillers efficiency and capacity.

A purge system is requ ired on low-pressure cent rifugal
chiller s. It is a device that is externally mounted on the
chiller. Its purpose is to remove non-condensable
materials that have leaked into the machine.

Note: F or convenience, the term “ air” is often used in this

document, although any other non-cond ensable
materials that may exist in the chiller are also
removed by the purge system.

coil, it condenses into a liquid, leaving a partial vacuum
behind. More refrigerant vapor from the chiller condenser
migrates to the purge tank to fill th e vacuum.

The liquid refrigerant that has condensed in the purge tank
returns to the chiller condenser through the liquid return
line. The return line includes a filter-drier and a moisture­indicati ng sight glass.

The condensing unit is air-cooled, and is operable whether
the chiller is running or not. No additional cooling source
is required.

How a Purge System Works

From a functional standpoint, the purge system can be
divided into subsystems of components. This section
identifies and describes the function of these subsystems.

Refrigeration Circuit Subsystem

The purge evaporator of the refrigeration circuit is located
in the purge tank. The purge tank is connected to the chiller
condenser by supply and return lines through which chiller
refrigerant can freely flow.

The purge evaporator coil p resents a cold condensing
surface to the chiller refrigerant entering the purge tank.
When the purge refrigeration system is run ning,
refrigerant from the chiller condenser is attracted to the
cold surface of the purge evaporat or. When the gaseous
refrigerant contacts the surface of the purge evaporator

CVHH-SVX001A-EN 71

Operating Principles

1. Purge tank

2. Condensing unit (includ es compressor, condenser coil, and fan)

3. Pressure-relief device (fusible plug)

4. Pump-out solenoid valve

5. Automatic expansio n valve

6. Carbon tank

7. Carbon tank temperature sensor

8. Carbon tank heater

9. Exhaust solenoid valve

10. Pump-out compressor

11. Float switch

12. Compressor suction temperature sensor

13. Chiller refrigerant return line

14. Filter -drier canister

1

4

7

10

3

6

5

9

2

11

8

12

13

14

Figure 39. Components of a Trane EarthWise purge system (front view)

72 CVHH-SVX001A-EN

Figure 40. Components of a Trane EarthWise purge system (back view)

1

1. Regeneration solenoid valve

2. Pressure-relief valve

3. Exhau st solenoi d valve

4. Pum p-out compressor

5. Carbon tank heater

6. Autom atic expansion valve

7. Pump-out solenoid valve

8. Pressure-relief device (fusible plug)

9. Carbon tank

10. Purge tank

11. Condensing unit

12. Chiller refrigerant supply line

9

5

3

4

7

10

11

6

8

2

1

12

Operating Principles

Purge Tank Subsystem

Any non-condensables that have accumulated from the
refrigerant vapor are left beh ind to collect in the purge

tank. As the quantity of non-condensables increases, the
heat transfer efficiency of the purge evaporator coil is
reduced, causing the purge compressor suction
temperature to decrease.

A float switch, mounted in the bott om of the purge tank,
indicates if there is ex cessive accumulation of liquid
refrigerant in the tank. A liquid level sensor, which resides

CVHH-SVX001A-EN 73

in the purge control panel, monitors the status of the float
switch.

If th e normally closed float switch is open fo r more than
20 minutes, the purge controls will turn off the
refrigeration system and generate a non-latching
diagnostic—Purge Liqui d Level Too High Warning. If the
float switch has re-closed after 20 m inu tes, the purge
controls will restart the r efri gerat ion system.

If the float switch remains open for more than 20 minutes,
or if the float switch/liquid level restart cycle has occurred

Operating Principles

more than four times in four hours, a latching diagnostic—
Purge Liquid Level Too High Continuously—will be
generated. The purge system will not restart until it is
reset.

If a Purge Liquid Level Too High Continuously diagnostic
occurs, check the purge lines for any type of restriction
(trapped liquid, closed valves, etc.) and ensure that the
filter-drier on the liqu id return line is in good condition.

A UL-required pressure-relief device (fusible plug), which
protects against over-pressuri zation of the purge tank, is
mounted on the purge tank. The plug material will fuse at

98.9°C (21 0° F ), which equates to approximately 910.1 kPag

(132 psig) for refrigerant R-1233

(E).

zd

Pump-out Subsystem

When the purge control subsystem detects the presence
of non-condensables in the purge tank, the pump-out
solenoid and exhaust sole noi d val ves op en, and the
pump-out compressor turns on. The valves and the
compressor cycl e on and off as needed to achieve an
efficient and fast removal of non-condensables.

A High Vacuum Pump option is available for applications
that require purge operation at low condensing
temperatures and pressures. This option provides a two­stage pump-out compressor. The High Vacuum Pump
option allows the purge system to operate to saturation
temperatures as low as 1.1°C (34°F). Typical applications
that may requ ire t he High Vacuum Pump o ption include
free-cooling installations, series chiller inst allat ions, ice
systems having brine flowing through idle chillers, chillers
installed outdoors or in uncon ditioned spaces, or any
application that may cause very low condenser water
temperatures.

Carbon Tank and Regeneration Subsystem

The discharge from the pump-out compressor is piped
through the carbon tank. The special carbon in the tank
effectively scrubs and collects refrigerant molecules from
the non-condensable gas b efore the gas passes through
the exhaust solenoid valve to the chiller vent line.

A 175 W resistive heater is mounted inside the carbon tank
and is used to periodically “ regenerate” the carbon bed
and drive any collected refrigerant vapor back into the
chiller. A UL-required pressure-relief valve, rated at

1034.2 kPa (150 psi), is mounted on the line leaving the

carbon tank. The valve protects against over­pressurizati on of the carbon tank.

A temperature sensor is installed through the top of the
carbon tank shell so that the contr ols can monitor the
carbon bed temperature. The temperature sensor controls
the regeneration cycle and protect against overheating. If
the limit temperature is reached, the system shuts down
and a Purge Carbon Regen Temperature Limit Exceeded
diagnostic is generated.

Sensors

The following sensors are used to enable control
communication between the Tracer UC800 controller and
the EarthWise purge system. The sensors use low-level
intelligence devices (LLIDs) to communicate with the
Tracer UC800 controller.

Compressor suction temperature sensor. This

sensor is mounted on the purge condensing unit suction
line. The controller uses the val ue of this temperature
sensor to decide whether or not to purge non­condensables from the purge tank. When the temperature
drops to a specified point, the controller activates the
pump-out cycle to remove the accumulated non­condensables from the purge tank. When enough non­condensables have been removed and the purge
compressor suction temperature increases in response,
the controller terminates the pump-out cycle.

Saturated condenser temperature sensor. This

sensor is mounted on the chiller. If the chiller is ru nning,
the controller uses the value of this temperature sensor to
adjust the purge pump-out initiate/terminate setpoints. It
may be used to prohibit pump-out, if system conditions
are too cool.

Saturated evaporator temperature sensor. This

sensor is mounted on the chiller. If the chiller is Off, the
controller uses the value of this temperature sensor to
adjust the purge pump-out initiate/terminate setpoints. It
may be used to prohibit pump-out, if system conditions
are too cool.

Carbon tank tem perature sensor. This sensor is

mounted in the carbon tank of the purge system. It
provides feedback to the carbon regeneration algorithm.
The sensor and the controller function much the same as
a thermostat to control the carbon tank heater.

Liquid level sensor. This sensor resides in the purge

control panel. It monitors the status of the normally closed
float switch, which is mounted in the bottom of the purge
tank. If an adequate amount of liquid fails to drain from the
purge tank, the float swi tch and sensor detect the
condition and prevent further p urge operation .

Condensing unit LLID. This LLID resides in the purge

control panel. It uses a high-capacity relay to control the
operatio n of the purge condensing unit.

Quad rela y LLID. This LLID resides in the purge control

panel. It has four relay outputs that are used to control the
pump-out compre ssor, the carbon tank heater, the
regeneration solenoid valve, and an alarm output.

Dual triac LLID. This LLID resides i n the purge control

panel. It has two triac-type outputs that are used to control
the pump-out solenoid valve and the exhaust sol enoid
valve. The purge system draws its control power from the
power supplies of the chiller control panel.

74 CVHH-SVX001A-EN

Start-up and Shut-down

Stopping

Preparing to Shut Down

Shutting Down

Running

Running

Running - Limit

Stopped

Stopped

Run Inhibit

Starting

Auto

Waiting to Start

Starting Compressor

Start

Command

Diagnostic

Reset

Confirmed Start

Stop Command

Diagnostic

Confirmed Shutdown

Power

Up

Fast Restart or Satisfied Setpoint

Stop Command or Diagnostic

This section will provide basic information on chiller
operation for common events. With microelectronic
controls, ladder diagrams cannot show today’s complex
logic, as the control functions are much more involved
than older pneumatic or solid state controls.

Chiller Sequence of Operation

Adaptive control algorithms can also complicate the exact
sequence of operation. This section illustrates common
control sequences.

Software Operation Overview Diagram

Figure 41 is a diagram of the five possible software states.

This diagram can be thought of as a state chart, with the

Figure 41. Software operation overview

arrows, and arrow text, depicting the transitions between
states.

Des c r iptions

• The text in the circles are the internal software
designations for each state.

• The first line of text in the circles are the visible top
level operating modes that can be displayed on Tracer
AdaptiView.

• The shading of each software state circle corresponds
to the shading on the time lines that show the state that
the chiller is in.

CVHH-SVX001A-EN 75

Start-up and Shut-down

Power

Applied

to

Controls

Last Chiller Mode
Was Auto

Call for Cooling

Auto Waiting to Start

Waiting to Start

Starting
Compressor

UC800 Boot

Time

(30–50 sec)

Enforce Power
Up Start Delay

Timer (0–30 min)

Wait for Highest Motor Winding

Temp to Fall Below 73.9°C (165°F)

Wait for Oil Temp to Rise Above

Sat Evap + -1.1°C (30°F)

and 37.8°C (100°F)

Prelube (60 sec)

Begin Oil Vent Line
Valve low limit
venting

Overdrive IGV Closed

Energize Condenser
Water Pump Relay

Confirm Condenser Water Flow
Within 4 min 15 sec
(6 sec Filter)

Energize Oil Pump Relay

Confirm 82.7 kPad (12 psid)
Oil Pressure
Within 3 min

Check for High Vacuum
Lockout

Initialize Oil Vent Line Valve to Minimum Open Position

Energize Evaporator
Water Pump Relay

Confirm Evaporator Water
Flow Within 4 min 15 sec
(6 sec Filter)

Open Oil Vent Line Valve

Enforce Stop to Start Timer Using Values From

Real Time Clock (5–200 sec, 30 is Default)

There are five generic states that the software can be in:

•Power Up

•Stopped

•Starting

• Running

•Stopping

Descriptions

• The time line indicates the upper level operating mode,
as it would be viewed on Tracer AdaptiView.

• The shading color of th e cylinder indicates the
software state.

• T ext in parentheses indicates sub-mode text as viewed
on Tracer AdaptiView.

• Text above the time line cylinder is used to illustrate
inputs to the Main Processor. This may include User
input to the Tracer AdaptiView Touch screen, Control
inputs from sensors, or Control Inputs from a Generic
BAS.

• Boxes indicate Control actions such as Turning on
R e lays, or moving the Inlet Guide Vanes.

• Smaller cylinders indicate diagnostic checks, text
indicates time based functions, solid double arrows
indicate fixed timer s , and dashed doubl e arrows
indicate variable timers.

Start-up Sequence of Operation—
Wye-Delta

Logic Circuits within the various modules will determine
the starting, running, and stopping operation of the chiller.
When operation of the chiller is required the chiller mode
is set at “Auto. ” Using customer supplied power, the chilled
water pump relay is energized and chilled water flow must
be verified within 4 minutes and 15 seconds, at the same
time the oil vent line valve is opened. 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

Based on the R estart Inhibit function and the Differential to
Start setpoint, the oil and refrigerant pump is energized,
and the oil vent line valve is closed t o the minimum
position. The oil pressure must be at least 82.7 kPad
(12 psid) for 60 continuous seconds and condenser water
flow verif ied within 4 minutes and 15 seconds for the
compressor start sequence to be initiated. After the
compressor starts, the oil vent line valve begins to open;
it can take betwe e n 15 and 30 minut es to full y open
depending on the chiller running conditions.

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 perc ent of the chiller nameplate RLA for 1.5 seconds,
the st arter transitions to the “ Delta” confi gur ation.

Figure 42, p. 76).

Figure 42. Sequence of operation: power up to starting

76 CVHH-SVX001A-EN

Start-up and Shut-down

Starter
Status is
“Running”

Limit Mode

Exit
Limit Mode

Chiller
Is
Running

Starting

Compressor

Chiller Is Running

Chiller Is Running—Limit Chiller Is Running

Modulate IGV/AFD
for LWT control

Modulate IGV/AFD
for LWT control

Modulate IGV/AFD
for Limit control

Enforce All Running Mode Diagnostics

Note: If the Oil Tank Temperature rises above the Oil Cooler Control Setpoint whilte the
compressor is running, the Oil Cooler Solenoid Valve shall be energized to cool the unit.

Satisfied Setpoint

Preparing Shutdown

Shutting Down Shutting Down

Running Auto

Close IGV (0–50 sec)

Postlube 3 min

De-Energize Oil Pump

Command IGV Closed

De-Energize
Compressor

Open Oil Vent Line Valve

Confirm No Oil Pressure*
5 min after oil pump is de-energized

Confirm No Compressor Currents
Within 0–30 sec

Hold position of Oil Vent Line Valve

De-Energize Condenser
Water Pump Relay

Enforce All Running Mode Diagnostics

*Note: No oil pressure is less than 20.7 kPad (3 psid)

Now that the compressor motor is running in the “ Delta”
configuration, the inlet guide vanes will modulate,
opening and closing to the chiller load variation by
operation of the stepper vane motor actuator to satisfy
chilled water setpoint. The chiller continues to run in its
appropriate mode of operation: Normal, Sof tload, Limit
Mode, and so on (see

Figure 43). If the oil tank temperature

rises above the oil cooler setpoint while the compressor is
running, the oil cooler solenoid valve shall be energized to
cool the oil.

If the chilled water temperature drops below the chilled
water set point by an amount set as the “ differential to
stop” setpoint, a normal chiller stop sequence is initiated
as follows:

Figure 43. Sequence of operation: running

1. The inlet guide vanes are driven closed (up to
50 seconds).

2. After the inlet guide vanes are closed, the stop relay
and the condenser water pump relays open to turn off.
The oil and refrigerant pump motor will continue to run
for 3 minutes post-lube while the compressor coasts to
a stop. The oil vent line valve will then open. The chilled
water pump will continue to run while the main
processor module monitors leaving chilled wat er
temperature preparing for the next compressor motor
start based on the “ different ial to start” setpoint.

Figure 44, p. 77 illustrates this sequence.

Figure 44. Sequence of operation: satisfied setpoint

CVHH-SVX001A-EN 77

Start-up and Shut-down

Local Stop
Normal Latching Diagnostic
Normal Non-Latching Diagnostic

Tracer Stop

External Auto-Stop

IGV Closed

Preparing Shutdown Shutting Down

Shutting Down

Running

Stopped

Run Inhibit

Stopped

or

Run Inhibit

Evap Pump
Off Delay
and Postlube
Complete

Close IGV (0–50 sec)

Postlube 3 min

Evap Pump Off Delay Time

(0–30 min)

Command IGV Closed

Enforce All Running Mode Diagnostics

De-Energize Condenser
Water Pump Relay

De-Energize
Compressor

Confirm No Compressor Currents
Within 8 sec

Hold position of Oil Vent Line Valve

Open Oil Vent Line Valve

De-Energize Oil Pump

Confirm No Oil Pressure*
5 min after oil pump
is de-energized

De-Energize Evaporator
Water Pump Relay

*Note: No oil pressure is less than 20.7 kPad (3 psid)

If the STOP key is pressed on the operator interface, the
chiller will follow the same stop sequence as above except
the chilled water pump relay will also open and stop the
chilled water pump after the chilled water pump delay
timer has timed out after compressor shut down (see

If th e “ Immediate Stop” is initiated, a panic stop occurs
which follows the same stop sequence as pressing the
STOP key once except the inlet guide vanes are not
sequence closed and the compr essor mot or is
immediately turned off.

Figure 45).

Figure 45. Sequence of operation: normal shut-down to stopped and run inhibit

P ower Up Diagram

Figure 42, p. 76 i llu strates Tracer Adap tiView dur ing a

power up of the main processor. This process takes from
30 to 50 seconds depending on the number of installed
Options. On all power ups, the software model always will
transition through the Stopped software state
indepe ndent of the last mode. If the last mode before
power down was Auto, the transition from Stopped to
Starting occurs, but it is not apparent to the user.

Ice Machine Control

The con trol panel prov ides a service level Enable or
Disable menu entry for the Ice Building feature when the
Ice Building option is installed. Ice Building can be entered
from Front Panel, or i f hardware is specified the co ntr ol
panel will accept ei ther an isolated contact closure 1K9
Terminals J2-1 and J2-2 (Ground)) or a remote
communicated input (BAS) to initiate the ice building
mode where the unit runs fully loaded at all times. Ice

entered again until the unit is switched to the non-ice
building mode and back into the ice building mode. It is not
acceptable to reset t he chilled water setpoint low to
achieve a fully load ed compressor. When entering ice
buildi ng, the compressor will be loaded at its maximum
rate and when leaving ice building the compressor will be
unloaded at its maximum rate. While load ing and
unloading the compressor, all surge detection will be
ignored. While in the ice building mode, current limit
setpoints less than the maximum will be ig nored. Ice
Building can be terminated by one of the following means:

• Front panel disable.

• Openin g the external Ice. Contacts/ Remote
communicated input (BAS).

• Satisfying an evaporator entering fluid temperature
setpoint (default i s -2.8°C [27°F]).

• Surging for 7 minutes at full open IGV.

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

78 CVHH-SVX001A-EN

Figure 46. Sequence of operation: ice building: running to ice buildin g

Ice Making Command:

1. Front Panel

2. Tracer

3. External Input

Evap Leaving
Water Temp Rises
Above the Diff To
Stop

Ice Making
Command
Withdrawn

Running

Running

Running

(Ice Building)

Running (Ice to Normal

Transition)

Running

Ice to Normal Transition Timer

(0–10 min)

Head Relief Request Relay

Delay (1–60 min)

Head Relief Request Relay

Delay (1–60 min)

Open IGV at Max Rate/
Max AFD Frequency

Ignore Softloading and
Set CLS=100%

Energize Ice Building
Relay

Close IGV/Min AFD
Frequency

De-Energize Ice Building
Relay

Modulate IGV/AFD
for LWT control

De-Energize Head Relief
Request Relay

Energize Head Relief
Request Relay

Enforce All Limits and Running Mode Diagnostics

Ice Making Command:

1. Front Panel

2. Tracer

3. External Input

Evap Entering
Water Temp Falls
Below the Ice
Termination
Setpoint

Auto

Run Inhibit
(Ice Building
Complete)

Starting

Compressor

Running

(Ice Building)

Preparing to

Shut Down

Shutting

Down

Run

Inhibit

Open IGV at Max Rate/
Max AFD Frequency

Close IGV

(0–50 sec)

Postlube

(3 min)

Heat Relief Request Relay

Delay (1–60 min)

Ignore Evap Pump

Off Delay Time
for Ice Building

Close IGV/Min AFD
Frequency

De-Energize Oil Pump

Open Oil Vent Line Valve

Hold position of Oil Vent Line Valve

De-Energize
Condenser
Water Pump Relay

De-Energize Evaporator
Water Pump Relay

De-Energize
Compressor

Confirm No Compressor Currents
Within 8 sec

Ignore Softloading and
Set CLS=100%

Energize Ice Building
Relay

Begin Oil Vent Line
Valve low limit venting

Enforce All Limits and Running Mode Diagnostics

De-Energize Ice
Building Relay

De-Energize Heat
Relief Request Relay

Energize Head Relief
Request Relay

Start-up and Shut-down

Figure 47. Sequenc e of operation: ice building: s topped to ice to ice building complete

CVHH-SVX001A-EN 79

Start-up and Shut-down

Free Cooling Cycle

Based on the principle that refrigerant migrates to the
coldest area in the system, the free cooling option adapts
the basic chiller to function as a simple heat exchanger.
However, it does not provide control of the leaving chilled
water temperature.

If condenser water is available at a temperature lower than
the required leaving chilled water temperature, the
operator interface must remain in AUTO and the operator
starts the free cooling cycle by enabling the Free cooling
mode in the Tracer AdaptiView Feature Settings group of
the operator interface, or by means of a BAS request. The
following components must be factory-installed or field­installed to equip the unit for free cooling operation:

• a refrigerant gas line, and electrically-actuated shutoff
valve, between the evaporator and condenser, and

• a valved liqui d return line, and electrically-actuated
shutoff valve, between the condenser sump and the
evaporator.

When the chiller is changed over to the free cooling mode,
the compressor will shut down if running, the shutoff
valves in the liquid and gas lines open; unit control logic
prevents the compressor from energ izing dur ing free
cooling. Since the temperature and pressure of the
refrigerant in the evaporator are higher than in the
condenser (i.e., because of the difference in water
temperature), the refr igerant in the evaporator vaporizes
and travels to the condenser, cooling tower water causes
the refrigerant to condense on the condenser tubes, and
flow (again, by gravity) back to the evaporator.

This compulsory refrigerant cycle is sustained as long as
a temperature differential exists b etween condenser and
evaporator water. The actual cooling capacity provided by
the free cooling cycle is determined by the difference
between these temperatures which, in turn, determines
the rate of refrigerant f low between the evaporator and
condenser shells.

If the system load exceeds the available free cooling
capacity, the operator must manually initiate changeover
to the mechanical cooling mode by disabling the free
cooling mode of operation. The gas and liquid line valves
then close and compressor operati on begins (see

Figure 42, p. 76, beginning at Auto mode). Refrigerant gas

is drawn out of the evaporator by the compressor, where
it is then compressed and discharged to the condenser.

Hot Water Control

Occasionally CTV chillers are selected to provide heating
as a primary mission. With hot water temperature control,
the chiller can be used as a heating source or coo ling
source. This feature provides greater application
flexibilit y. In this case the operator selects a hot water
temperature and the chiller capacity is modulated to
maintain the hot water setpoint. Heating is the primary
mission and cooling is a waste product or is a secondary
mission. This type of operation requires an endless source

80 CVHH-SVX001A-EN

of evaporator load (heat), such as well or lake water. The
chiller has only one condenser.

Note: Hot water temperature control mode does not

convert the chiller to a heat pump. Heat pump
refers to the capability to change fro m a cooling­driven application to a heating-driven application
by changing the refrigerant path on the chiller. This
is impractical for centrifugal chillers as it would be
much easier to switch over the water sid e .

This is NOT heat recovery. Although this feature could be
used to recover heat in so m e for m , a heat r ecov ery unit h as
a second heat exchanger on the condenser side.

The Tracer AdaptiView Main Processor provides t he hot
water temperature control mode as standard. The leaving
condenser water temperature is controlled to a hot water
setpoint between 26.7 and 60.0°C (80°F and 140°F). The
leaving evaporator water temperature is left to drift to
satisfy the heating load of the condenser. In this
applicati on the evaporator is normally piped into a lake,
well, or other source of constant temperature water for the
purpose of extracting heat . In hot water temperature
control mode all the limit modes and diagnostics operate
as in normal cooling with one exception; the leaving
condenser water temperature sensor i s an MMR
diagnostic when in hot water temperature control mode.
(It is an informational warning in the normal cooling
mo de.)

In the hot water temperature control mode the differential­to-start and differential-to-stop setpoints are used with
respect to the hot water setpoint instead of with the chilled
water setp oint. The control panel provides a separate
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
setpoint is the external hot water setpoint; that is, a single
analog input is shared at the 1K6-J2-5 to 6 (ground).

An external bi nary input to select external hot water
control mode is on the EXOP OPTIONA L module 1K8
terminals J2-3 to J2-4 (ground). Tracer AdaptiView also
has a binary input to select chilled water control or hot
water temperature control. There is no additional leaving
hot water temper ature cutout; the HPC and condenser
limit provide for high temperature and pressure
protection.

In hot water temperature control the softloading pulldown
rate limit operates as a softloading pullup rate limit. The
setpoint for setting the temperature rate limit is the same
setpoint for normal cooling as it is for hot water
temperature control. The hot water temperature co ntrol
feature is not designed to run with HGBP, AFD, free
cooling, or ice building.

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.

Control Panel Devices and Unit-

X39003892001A

Mounted Devices

Unit Control Panel

Safety and operating controls are housed in the unit
control panel, the star ter panel, and the purge control
panel. The control panel operator interface and main
processor is called Tracer AdaptiView and is located on an
adjustable arm connected to the base of the control panel.
F or more information about operating Tracer AdaptiView,
refer to Tracer AdaptiView™ Display for Water-Cooled
CenT raVac™ C hillers Operations Guide (CTV -SVU01D-E N,
or the most recent version).

The control panel houses several other controls modules
called panel mounted LLID (Low Level Intelligent Device),
power supply, terminal block, fuse, circuit breakers, and
transformer. The IPC (Interprocessor communication) bus
allows the communications between LLIDs and the main
processor. Unit mounted devices are called frame
mounted LLIDs and can be temperature sen sors or
pressure transducers. These and other functional switches
provide anal og and binary inputs to the control system.

Start-up and Shut-down

WARNING

Toxic Hazards!

Do not allow the chiller to increase above 54.4°C (130°F )
in temperature while unit is off. Failure to prevent high
c hi ller temperature will cause the inside pressure to
rise:

• Do not run evaporator water pump longer than
30 minutes after the chiller is shut down.

• Ensure that the evaporator is isolated from the hot
water loop before changeover to heating mode.

The rupture disk is designed to relieve and discharge
the refrigerant from the unit if the pressure in the
evaporator exceeds 344.7 kPag (50 psig). A significant
release of refrige rant into a confined space due to a
rupture disk failure could displace available oxygen to
breathe and cause possible asphyxiation. Should a
rupture disk fail, evacuate the area immediately and
contact the appropriate rescue or response authority.
Failure to follow instructions could result in death or
serious injury.

User-Defined Language Support

T racer AdaptiView is capable of displaying English text or
any of twenty-four other languages. Switching languages
is simply accomplished from a language settings menu.

Unit Start-up and Shut-down
Procedures

WARNING

Live Electrical Components!

Failure to follow all electrical safety precautions when
exposed to live electrical components could result in
death or serious injury. During installation, testing,
servic ing and troubleshooting of this produc t, it may be
necessary to work with live electrical components.
Have a qualified licensed electrician or other individual
who has been properly trained in handling live
electrical components perform these tasks .

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

CVHH-SVX001A-EN 81

Start-up and Shut-down

Daily Unit Start-up

1. Verify the chilled water pump and condenser water
pump starter are in ON or AUTO.

2. Verify the cooling tower is in ON or AUTO.

3. Check the oil tank oil level; the level must be visible in
or above the lower sight glass. Also, check the oil tank
temperature; normal oil tank temperature before start­up is 53.3°C to 56.1°C (128°F to 133°F).

4. Check the chilled water setpoint and read just it, if
necessary, in the Chiller Settings menu.

5. If necessary, readjust the current limit setpoint in the
Chiller Setpoints menu.

6. Press AUTO.

The control panel also checks compressor motor winding
temperature, and a start is initiated after a minimum
restart inhibit time if the winding temperature is less than

129.4°C (265°F ). The chilled wa ter pump relay is energiz ed

and evaporator water fl ow is proven. Next, the control
panel checks the leaving evaporator wat er temperature
and compares it to the chilled water setpoint. If the
difference between these values is less than the start
differenti al setpoint, cooling is not needed.

If the control panel determines that the difference between
the evaporator leaving water temperature and chilled
water setpoin t exceeds the start differential setpoint, the
unit enters the initiate Start Mode and the refrigerant
pump and the condenser water pump are started. If flow is
not initially established within 4 minutes 15 seconds of the
condenser pump relay energization, an automatically
resetting diagnostic “ Condenser Water Flow Overd ue”
shall be generated which terminates the prestart mode
and de-energi zes the condenser water pump relay. This
diagnostic is automatically reset if flow is established at
any later time.

No te: This diagnostic does not automatically reset if

Tracer AdaptiView is in control of the condenser
pump through its condenser pump relay, since it is
commanded off at the time of the diagnostic. It may
reset and all ow normal chiller operation if the
pump was controlled from some external so urce.

If the compressor motor starts and accelerates
successfully, Running appears on the display. If the purge
is set to AUTO, the purge will start running and will run as
lon g as the chiller is running.

No te: If a manual reset diagnostic condition is detected

during start-up, unit operation will be locked out,
and a manual reset is required before the start-up
sequence can begin again. If the fault condition has
not cleared, the control panel will not permit
restart.

When the cooling requirement is satisfied, the cont rol
panel originates a Shuttin g do wn signal. The inlet g uide
vanes are driven closed for 50 seconds, the compressor
stops, and the unit enters a 3-minute post-lube period. The

82 CVHH-SVX001A-EN

evaporator pump may continue to run for the amount of
time set using Tracer AdaptiView.

Once the post-lube cycle is done, the unit returns to auto
mode.

Seas onal Unit Start-up

1. Close all drain valves, and reinstall the drain plugs in
the evaporator and condenser header s.

2. Service the auxiliary equipment according to the start­up and mainten ance instructions provided by the
respective equipment manufacturers.

3. Fill and vent the cooling tower, if used, as well as the
condenser and piping. At this point, all air must be
removed from the system (including each pass). Then
close the vents in the condenser waterboxes.

4. Open all of the valves in the evaporator chilled water
circuit.

5. If the evaporator was previously drained, fill and vent
the evaporator and chilled water circuit. When all air is
removed from the system (including each pass), close
the vent valves in the evaporator waterb oxes.

6. Lubricate the external vane control linkage as needed.

7. Check the adjustment and operation of each safety and
operating control.

8. Close all disconnect switches.

9. Perform in structions listed in

.

p. 82

“ Daily Unit Start-up,”

Daily Unit Shut-down

Note: Also refer to

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

Important: Control power disconnect switch must

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. Ai r dry bundle of
residual water.

4. Once the unit is secured f or the season, the
maintenance procedures described

T able 21, p. 93 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

Figure 45, p. 78.

remain closed to allow oil sump heater
operation. Failure to do this will allow
refrigerant to con dense in the oil pump.

T able 20, p. 92 and

Start-up and Shut-down

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.

EarthWise Purge Sequence of
Operations

A Tracer UC800 controller that is configured to control a
purge system uses the operational sequences described in
this section.

Purge Operating Modes

Purge oper ating mode options are as follows:

Stop. The purge condensing unit does not run in this

mode.

On. The purge condensing unit runs continuously in this

mode, regardless of the chillers operational status.

Auto. The purge condensing unit runs in this mode, if the

main compressor of the chiller is operating.

Adaptive. The purge condensing unit operation depends

on past purge activity.

Adaptive Mode Process—Chiller C o mpressor
On

Figure 48, p. 84, illustrates the process described in this

subsection.
When the chiller compressor starts, the purge refrigeration

circuit starts. The purge refrigeration circuit continues to
run until 60 consecutive minutes of running occur without
any pump-out of non-condensables. The Pumpout Time is
the greater of the following two values that the controller
has been tracking:

• The pump-out time wit h the chiller On, over the last
24 hours

• The average daily pump-out time with the chiller On,
over the last 7 days

Adaptive Mode

The objectives of operating the unit in the adaptive mode
are to:

• Enable purge system operation

• Enable the refrigeration circui t to eff ectively
accumulate non-condensables whether or not the
chiller is running

• P rovide information to an operator regarding whether
leakage is on the high-pressure or low-pressure side of
the chiller

• Decrease energy usage by running the purge
refrigeration circuit only when needed to remove non­condensables, rather than running it continu ously

The adaptive mode requires historical operating data so
that the controller can make optimal decisions regarding
how to run the purge refrigeration circuit in the future. On
initial start-up of a chiller that is in adap tive mode, the
purge refrigeration circuit runs continuously for 168 hours
(7 days). The chiller compressor may or may not be
running during this p e riod.

Following the initial data collection period, the adaptive
mode customizes the purge refrigeration circuit operation
during two distinct chiller operating conditions:

• Chiller compressor On

• Chiller compressor Off

CVHH-SVX001A-EN 83

Start-up and Shut-down

First chiller power-up.
Purge operates
continuously f or 168
hours to collect data.
Chiller On or Off.

Chiller and purge
start.

Purge runs.

Has purge
run 60
minutes
without any
pump-out?

The purge control reviews
the historical data and
determ ine the Pumpout
Time with the c hiller On
(Pumpout Time from last
24 hours daily average over
last 7 days, whichever is
greater.

Yes

No

T urn purge unit Off for
1 hour, then restart.

T urn purge unit Off for
2 hours, then restart.

T urn purge unit Off for
3 hours, then restart.

T urn purge unit Off for
4 hours, then restart.

Is Pumpout
Time greater
than 8
minutes?

Is Pump out
Time greater
than 5
minutes?

Is Pumpout
Time greater
than
3 minutes?

Is Pum pout
Time greater
than
1 minute?

Yes

Yes

Yes

Yes

No

No

No

No

Figure 48. Adaptive chiller ON flow chart

The purge then shuts down for a corresponding period of
time, as shown in the following table:

Pum pout Time w ith chiller On
( over the last 24 hours or daily average
over the last 7 days, w hichever is greater)

Pumpout Time ≤ 1 minute 4 hours
1 minute < Pumpout Time ≤ 3 minutes 3 hours
3 minutes < Pum pout Time ≤ 5 minutes 2 hours
5 minute < Pumpout Time ≤ 8 minutes 1 hour
Pumpout Time > 8 minutes No Off cycle

Purge Off cycle
duration

During the purge refrigeration circuit Off cycle, the time
remaining is displayed as Time Until Next Purge Run in the
Log Sheet that you can view from the Tracer AdaptiView
display (refer to

If th e compresso r is turned Of f during the purge
refrigeration circuit Off cycle, the purge transfers to
Adaptive Mode Procedure—Chiller Compressor Off.

Figure 49, p. 86 illustrates this process.

“ Log Sheet,” p. 21).

84 CVHH-SVX001A-EN

Start-up and Shut-down

Adaptive Mode Procedure—Chiller
Compressor Off

Refer t o Figure 49, p. 86 for an illustration of the process
described in this subsection.

If the chiller compressor is turned Off, the purge
refrigeration circuit Off cycle is determined by the purge
control. The purge Off-cycle duration is determined by the
pump-out time, which is the greater of the following two
values:

• Daily P umpout—24 Hours (the pump-out time over the
last 24 hours whether the chiller is On or Off)

• Average Daily Pumpout—7 Days (the pump-out time
with the chiller On over the last 7 days)

Note: These two v alues can be seen o n the Tracer

AdaptiView display.

The purge will be shut down for a corresponding period of
time, as shown in the following table:

The pump- out tim e w ith chiller On or Off
( over the last 24 hrs or daily average over
the last 7 days, w hichever is greater)

Pump-out time ≤ 1 minute 3 days
1 minute < pump-out tim e ≤ 3 minutes 2 days
3 minutes < pump-out time ≤ 5 minutes 1 day
Pump-out time > 5 min ute s 6 hours

Purge Off cycle
duration

Daily Pumpout Limit Disabled. appears if the purge

refrigeration circuit is On but the daily pump-out limit has
been disabled.

Regenerating. appears if the purge carbon system is in

its regener ation mode. Pump-out is not allowed in thi s
submode.

Alarm–Check Diagnostics. appears if a new diagnostic

occurs.

Purge Diag Shutdown. appears if the purge system

has shut down in response to a latching diagnostic.

Regen Disabled. appears if carbon regeneration is not

allowed.

During the purge refrigeration cir cuit Off cycle, t he time
remaining is displayed as the Time Until Next Purge Run
in the purge report of the T racer AdaptiView display.

If the controls determine it is necessary to run the purge
while the chiller compresso r is Off, the purge will be
started and run until 60 consecutive minutes have passed
without any pump-out of non-condensables.

If the chiller compressor starts before the purge Off cycle
has elapsed, the purge starts and transfers to Adaptive
Mode Procedure—Chiller Compressor On.

, illustr ates this process.

p. 84

Figure 48,

Submodes

You can view up to six purge submodes from the Purge
Settings screen. The available purge submodes are:

Refrigeration Circuit On. appears if the p urg e

condensing unit/compressor is operating.

Refrigeration Circuit Idle. appears if the purge

condensing unit/ compressor is no t operating.

Pumping Out. appears if the purge refrigeration circuit

is On and pump-ou t has been initiated by the purge unit
controls.

Exhaust Circuit Check. appears if a pump-out has been

initiated by an operator.

Pumpout Inhibited. app ears if the purge refrigeration

circuit is On but pump-out has been inhibited by a lo w
condenser saturation temperature.

CVHH-SVX001A-EN 85

Start-up and Shut-down

First chiller p ower-up.
Purge operates
continuously for 168
h ours to collect data.
Chiller On or Off.

Chiller O ff. Purge Off.

The purge control reviews the historical
pump-out data f or “chiller On” and
“chiller Off” and determines the Pumpout
Time (from the last 24 hrs, or the daily
average over the last 7 days, whichever
is greate r).

Turn purge Off.

Hold purge Off for
6 hours.

Hold purge Off for
1 day.

Hold purge Off for
2 days.

Hold purge Off for
3 days.

Is Pumpout
Time less than
5 minutes?

Is Pumpout
Time less than
3 minutes?

Is Pumpout
Time less than
1 minute?

Is purge run
60 minutes
without
purging?

Run purge.

Yes

Yes

Yes

Yes

No

No

No

No

Figure 49. Adaptive chiller OFF flow chart

The purge condensing-un it compressor suction
temperature varies with the amount of non-condensables
collected in the purge tank. If the amount of non­condensables collected in the purge tank limits the
available condensing surface in the tank, the condensing­unit compressor suction temperature begins to fall.

The purge controller initiates a pump-out cycle when the
suction temperature reaches the pump-out initiate value
that is calculated within t he pu rge control. During the
pump-out cycle, the small pump-out compressor pulls any
non-condensables from the purge tank and discharges
them through the carbon tank. As the non-condensables
are removed from the purge tank, the condensing-unit
compressor suction temperature increases. The purge

controller monitors the compressor suction temperature
and cycles or stops the pump-out, depending on the
temperature that is present.

The 1/4 hp air-cooled condensing unit of the refrigeration
system operates effectively when it is in the operating
range shown in

Figure 50.

86 CVHH-SVX001A-EN

Figure 50. EarthWise purge operating limits

Typical o peratio n

Operating envelope extrem es

Ambient tempe rature (ºF)

Chiller c ondenser saturation tem perature (º F)

0 20 40 60 80 100 120 140 150

120

100

80

60

40

20

0

Pump-out can be
inhibited in this
range according to
control settings.

Start-up and Shut-down

Air Remova l

If no air is in the purge tank, the refrigerant returning to the
purge condensing unit compressor suction has a high
superheat (heat added past the point of evaporation ),
because of the heat removed from the condensing chiller
refrigerant vapor in the purge tank. As air accumulates in
the purge tank, it displaces the chiller refrigerant vapor and
decreases the amount of coil surface that is exposed to the
vapor. Less heat is removed from the vapor, and the
available superheat at the purge condensing unit
compressor suction consequen tly falls. When the purge
refrigerant compressor suction temperature falls far
enough to reach the pump-out initiate value, the purge
control activat es the solenoids and the pump-out
compressor to remove the accumulated air.

As air is removed from the purge tank, the inside coil is
once again exposed to chiller refrigerant vapor. As more
chiller refrigerant vapor condenses on the coil, more heat
is removed from the vapor, and the purge refrigerant
compressor suction temperature rises. The purge control
cycles or stops the pump-out process in response to the
compressor suction temperature.

P ump-out Operating Sequence

As the purge control system detects the presence of non­condensables in the purge tank, it init iates a pump-out
cycle. The pump-out solenoid valve, the exhaust solenoid
valve, and the pump-out compressor cycle On and Off as
needed to remove the non-co ndensables.

Non-Condensable Pump-out Algorithm

The control ler uses the non-condensable pump-out
algorithm to determine when to initiate, contro l, and

CVHH-SVX001A-EN 87

terminate a pump-out cycle to remove air from the purge
tank. The purge refri gerant compressor suction
temperature sensor serves as the feedback to this control
algorithm. The compressor suction temperature pump­out initiate and pump-out terminate values are calculated
by the purge control and are a function of the purge liquid
temperature.

The refrigerant used in the purge refrigeration circuit,
R-404A, is metered into the purge tank coil by a constant­pressure regulating expansion valve. The valve
automatically controls the purge suction pressure at a
constant value of 351.6 kPaa (51 psia). Therefore,
refrigerant is metered into the coil as a two-phase
refrigerant mixture at a constant saturation temperature of
approximately -18.9°C (-2°F).

The cold coil creates a low vapor pressure near its outside
surface, which draws refrigerant from the chiller
condenser into the purge tank and to the coil surface.
When the refrigerant gets close enough to the coil surface,
it condenses into a liquid. Since liquid refrigerant requires
less volume than it does in a gaseous form, additional
refrigerant enters the purge tank to fill the void and, in turn,
condenses. This mechanism is known as a thermal siphon.

As the chiller refrigerant condenses, heat is transferred
into the purge coil through the latent heat of condensation.
The compressor suction temperature sensor monitors this
heat transfer.

Air and other gases carried with the chiller refrigerant
vapor do n ot condense on the coil. Instead, they
accumulate in the purge tank, effectively acting to insulate
and inhibit the flow of refrigerant to the cold coil surface.
The thermal siphon rate is reduced and, consequently, so
is the amount of heat transfer. A corresponding reduction

Start-up and Shut-down

occurs in the temperature of the purge refrigerant exiting
the coil. The compressor suction temperature sensor
monitors this temperature.

When sufficient non-condensables have accumulated in
the purge tank to decrease the compressor sucti on
temperature below the pump-out in itiate value, a pump­out cycle begins. The cycle is terminated when the
compressor suction temperature sensor increases above
the pump-out terminate value. The cal culation s for the
pump-out values are:

Pump-out initiate:

• (°C) = Purg e liquid temperature (°C) – 10.0°C or -

17.8°C (whichever is higher)

• (°F) = Purge liqu id temperature (°F) – 50°F or 0°F

(whichever is higher)

Pump-out terminate:

• (°C) = Purge liquid temper ature (°C) – 4.4°C or -

15.0°C (whichever is higher)

• (°F) = Purge liqu id temperature (°F) – 40°F or 5°F

(whichever is higher)

The purge liquid temperature value comes from the
chiller’s saturated condenser temperature sensor when
the chiller is running, or the chiller’s saturated evaporator
temperature sensor when the chiller is off.

Non-condensable Pump-out cycle

A non-condensable pump-ou t cycle may be initiated as
described below only if the following two conditions are
met:

• A carbon regeneration cycle is NOT in process, and

• The refrigerati on circuit is on.

If at any time, except as described above, the purge
refrigerant compressor suction temperature drops below
the pump-out initiate value, the fol lowing sequence is
initiated by the controls.

The controller starts the pump-out compressor and opens
the exhaust solenoid valve. After 5 seconds, the pump-out
solenoid valve opens and pulses at a rate of 20 seconds On
and 20 seconds Off. If, after two cycles, the purge
refrigerant compressor suction temperature has not
exceeded the pump-out terminate value, the pump-out
solenoid valve stays continu ously open. If the pump-out
compressor runs for more than 10 consecutive minutes,
the controller recalculates the pump-out initiate and
pump-out terminate values as described.

The purge controls continue to operate the pump-out
solenoid valve and calculate values as described above
until the purge refrigerant compressor suction
temperature rises above the pump-out terminate value. At
this point, the controller will close the pump-out solenoid
valve and turn off the pump-out compressor and exhaust
solenoid valve.

No te: For purge systems equipped with standard pump-

out compressors, operation at lo w chiller

condenser saturation temperatures may result in a
system vacuum greater than the pump-ou t
compressor can overcome. If the chiller
experiences low condensing temperatures, then
the Tracer UC800 controller can be programmed to
inhibit the operation of the purge pump-out
compresso r.

Carbon Tank and Regeneration Subsystem

The function of the carbon tank is to absorb refrigerant
molecules that may be entrained in the discharge of non­condensables. In order to maintain effectiveness, the
carbon tan k periodically regenerates.

Carbon Regeneration Algorithm

The controller uses the carbon regeneration algorithm to
determine when to initiate, control, and terminate a
carbon regeneration cycle. The carbon bed temperature
sensor serves as the feedback to this algorithm. In
addition , the controller uses a pump-out accumulati on
timer to indicate the remaining carbon capacity in the
carbon tank. The carbon capacity is the capacity of the
carbon to adsorb refrigerant while maintaining acceptable
levels of refrigerant emission through the chiller vent line.
A capacity of 100 percent means the carbon bed has the
capacity to adsorb refrigerant and maintain acceptable
emission levels. A capacity of 0 percent means the carbon
bed has inadequate capacity to adsorb refrigerant and still
maintain acceptable emission levels.

The main objectives of the carbon regeneration algorithm
are to:

• Minimize the amount of refrigerant contained in the
carbon by performing a periodic r egener ation.

• Regenerate to maintain low emissions levels.

• Minimize the regeneration time.

• Regenerate only when the chiller is at a minimum level
of purging activity.

• Allow regeneration to occur with the chiller On or Off.
Re generation is preferabl e when the chiller is On to
ensure low carbon tank pressure, but regeneration is
also acceptable when the chiller is Off.

The rema ining amount of absorption capacity within the
carbon tank is directly proportional to the number of purge
pump-out minutes that have accumulated, and is also a
function of the chiller refrigerant type. The purge carbon
tank on an R-1233
fully saturated after the purge has accumulated
350 minutes of pump-out time. Because the relationship
between pump-out capacity and pump-out min utes is
directly proportional, it can be described by the following
equation within the regeneration algorithm:

Remain ing carbon capacity% =
100 - (pump-out minutes since last regen/pump-out

minutes at 100% capacity)*100

(E)-equipped chiller is considered to be

zd

88 CVHH-SVX001A-EN

Start-up and Shut-down

X39003892001A

For example, an R-1233zd(E)-equipped chiller that has
accumulated 80 minutes of purge pump-out time since the
last carbon tank regeneration would be estimated to have
84 percent carbon tank capacity remaining:

100 – (80/350)*100 = 84%
The purge controls may initiate a carbon tank regeneration

cycle when the remaining carbon tank capacity is
calculated to be less than 80 percent. However, the
continued stable operation of the chiller is always more
important than the regen eration of the carb on tank.
Therefore, the following rules apply:

1 . If the Daily Pump-out Limit is disabled, a regeneration

cycle may not be initiated, regardless of the value of
the remaining carbon capacity.

Also, if the Daily Pump-out Limit is disabled during a
regeneration cy cle, the regeneration cycle must be
terminated.

2. When the remaining carbon capacity is less than
80 percent, a regeneration cycle will be initiated at the
next opportunity when the chiller is running (after the
chiller has started and no pump-out minutes have
accumulated for the previous 60 minutes).

3. If there is no opportunity to purge as indicated by Rules
1 and 2 and the remaining carbon capacity is less than
50 percent, a regeneration cycle will be initiated at the
best opportunity when the chiller is shut down (and no
pump-out minutes have accumulated for the previous
60 minutes).

4. If there is no opportunity to regenerate as indicated by
R ules 1, 2, and 3, and the carbon capacity drops below
0 percent, then a regeneration cycle is initiated.

5. Note that if at any time during the regeneration cycle,
the chiller is running and shuts down or if the chiller is
off and starts up, then the regeneration cycle is
continued.

Carbon Tank Regeneration Sequence

WARNING

Hazardous Voltage

Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Fo llow proper lockout/ tagout proced ur es to ens ur e the
power can not be inadvertently energized.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

If th e purge controller determines that carbon tank
regeneration is desired and is allowed, the purge controls:

1. Disable the purge refrigeration circuit and the p ump­out solen oid valve.

2. Open the regeneration solenoid valve and turn on the
carbon tank heater.

3. Mo nitor t he carb on temperature until it reaches the
regeneration temperature value of 1 15.6°C (240°F ), and
control wi thin a ±5.6°C (±10°F) dead band for
15 minutes (this step shou ld take approximately
3hours).

CVHH-SVX001A-EN 89

Start-up and Shut-down

0 2468

Time (Hours)

If the carbon tank temperature exceeds 120 percent of the
regeneration temperature setpoint, the controller issues a
latching diagnostic, Purge Carbo n Regeneration
Temperature Limit Exceeded. The purpose of this
diagnostic is to identify a failed heater relay or
temperature sensor. It disables the purge and opens the
exhaust solenoid valve.

If the carbon tank temperature does not increase more
than 13.3°C (56°F) in the fi rst two hours, the controller
generates a non-latching diagnostic, Carbon Regeneration
T emperature T oo Low. The purpose of this diagnostic is to
identify a failed heater or temperature sensor. It prevents
automatic regeneration from occurring, but a service
technician can ini tiate a manual regen eration for testing
purposes. All other purge algorithms continue to function.

If the carbon tank temperature does not reach the
minimum regeneration temperature setpoint within 4
hours, the controller generates a non-latching diagnostic,
Purge Carbon Regen Temperature Not Satisfied. The
purpose of this diagnostic is to identify a failing insulation
system.

The complete regeneration cycle can take as long as seven
hours to accomplish, but an average chiller does not have
to regenerate very often. A typical regeneration cycle is
depicted in

Figure 51. Typical carbon regeneration cycle

Figure 51.

Time Until Next Purge Run. Displayed if the purge is

in Adaptive mode and is idle. It indicates the amount of
time left on the adaptive cycle timer.

Daily Pumpout—24 Hours. Indicates the daily

pumpout time for the last 24 hours (a moving 24-hour
window). It indicates how the hermetic integrity of the
chiller compares to historic pump-out times for the same
chiller. It also allows a check against factory-recommended
values.

Average Daily Pumpout—7 Days. Indicates the

average daily pump-out time for the last 168 hours (a
moving 168-h our window). Enables a comparison of
present pump-out times to past averages, and can be
another indication o f the hermetic integrity of the chiller.

Daily Pumpout Limit/ Alarm. Indicates the limit value

that an operator has set in the Settings menu. When the
daily pumpout rate exceeds this value, purge operation
stops and a diagnostic is generated.

Chiller On—7 Days. Indicates the percentage of time

during the past 7 days (floating 168-hour window) that the
chiller was operating. Y ou can use it to help determine if a
leak is present on the high side or the low side of the chiller.

Pumpout Chiller On—7 Days. Indicates the

percentage o f the total purge pump-out time during the
past 7 days that occurred while the chiller was operating.
Y ou can use it to help determine if a leak is present on the
high side or the low side of the chiller.

Purge Status Points

The status points appear on the purge component screen
of the Tracer AdaptiView display. The purge component
screen is accessible from the purge to uch target on the
home screen of th e display.

Pumpout Chiller Off—7 Days. Indicates the

percentage o f the total purge pump-out time during the
past 7 days that occurred when the chiller was not
operatin g. You can use it to help determine if a leak is
present on the hi gh side or the low side of the chiller.

Pumpout—Life. Indicates the total purge pump-out

time that has accumulated over the life of the purge.

Purge Rfgt Cprsr Suction Temp. Indicates the purge

refrigerant compressor suction temperature. It is useful
for diagnosing purge system problems.

Purge Liquid Temp. Indicates the temperature sensed

by the controller and used to inhibit purge operation. The
purge liquid temperature sensor, when the chiller is
operating, is the chiller saturated condenser temperature
sensor ; when the chiller is Off, it is the chiller saturated
evaporator temperature sensor. If t his t emperature is
below the Pumpout Inhibit Temperature that is defined in
the Settings menu, pump out is not allowed. This value is
used to prevent inefficient operation of the purge under
certain conditions.

Carbon Tank Tem p. Indicates the carbon bed

temperature and is useful for monitoring regeneration and
for diagnosing regener ation system problems.

90 CVHH-SVX001A-EN

Recommended Maintenance

X39003892001A

WARNING

Hazardous Volt age w/Capacitors!

Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharg e all motor start/ run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. V er ify with an appropriate voltmeter that all
capacitors have discharged.

For additional inf ormation regarding the safe discharge of
capa citors, see PROD-SVB06*-EN

NOTICE:

Check Purge Run-Time for Unit Hermetic
Integrity!

If frequent purging is required, failure to monitor purge
pumpout rate, identify and correct source of air or
water leak as soon as possible could shorten chiller life
expectancy, due to moisture contamination caused by
leakage.

NOTICE:

Do Not Use Non-Compatible Parts or
Materials!

Use of non-compatible parts or materials c ould result in
equipment damage. Only genuine Trane
components with identical Trane part numbers should
be used in Trane CenTraVac chillers. Trane assumes no
responsibility for damages resulting from the use of
non-compatible parts or materials.

This section describes th e 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 possib le performance and efficiency from a
CenTraVac chiller.

®

replacement

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Important:

• Before servicing, disconnect all power sources and

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

Record Keeping Forms

An important aspect of the chiller maintenance program is
the regular compl etion of recor ds. Refer to

Check Sheets,” p. 102

forms. When filled out accurately by the machine operator,
the completed logs can be reviewed to identify any
developing trends in the chiller’s operating conditions. For
example, if the machine operator notices a gradual
increase in condensing pressure during a month’s time, he
can systematically check, then correct the possible cause
of this condition.

for copies of the recommended

“ Forms and

CVHH-SVX001A-EN 91

Recommended Maintenance

Normal Operation

Table 19. Normal operation

Opera ting Characteristic Norma l R eading

Approximate Evaporator Pressure 55.2 to 91.0 kPaa (8 to 13.2 psia) / -46.2 to -10.3 kPag (-6.7 to -1.5 psig)
Approxim ate Condenser Pressure
Oil S ump Tem perature Unit not running 43.3°C to 57.2 °C (110°F to 135°F)
Oil S ump Tempe rature Unit running 43. 3°C to 71.1°C ( 110°F to 16 0°F)
Oil S um p Differential Oil Pressure

(a) Condenser pressure is dependent on condenser water tem perature, and should equal the saturation pressure of R-1233zd(E) at a temperature above

that of leaving condenser water at full load.

(b) Oil tank pressure: -48.3 to -27.6 kPag (-7 to -4 psig). Discharge oil pressure: 89.6 to 137.9 kPag (13 to 20 psig).

Table 20. Recommended maintenance

Daily Eve r y 3 months Every 6 m onths Annua lly

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

Check the oil level in the chiller oil
sump using the two sight glasses
provided in the oil sump head.
When t he unit is operating, the oil
level should be visible in the lower
sight glass.

Complete logs on a daily basis.

Tab le 1 9, p. 92 .

(a)

166.9 to 259.9 kPaa (24.2 to 37.7 psia) / 65.5 to 158.6 kPag (9.5 to 23 psig) (standard condenser)

(b)

137.9 to 165.5 kPad (2 0 to 24 psid)

Clean all water st rainers in the
water piping system .

Lubricate the vane control linkage
bearings, ball joints, and pivot
points.

Lubricate vane operator tang
O-rings.

Operate the tang operators
manually and check for any
abnormalities.

Drain content s of the rupture disk
and purge discharge ventline drip­leg into an evacuated waste
container. Do this more often if the
purge is operated excessively.
Apply oil to any exposed m etal
parts t o prevent rust.

( a) , ( b)

Sh ut d ow n t h e ch iller on ce ea ch y ear t o check t he
item s listed on the
(refer t o “Forms and Check Sheets,” p. 102).

Perform the annual ma intenance procedures
referred to in

p. 94.

Use an ic e w at er b at h t o v er ify t h e accu ra cy of t h e
evaporator refrigerant temperature sensor
(4BT11). I f the sensor is exposed to t emperature
extremes outside its normal operati ng range
(-17.8°C to 32.2°C [ 0°F to 90°F]) , check its
accuracy at six-month intervals.

Inspect the condenser tubes for fouling; clean if
necessary.

Inspect and clean the ifm efector
sensors.

Submit a sam ple of t he compressor oil to a Trane­qualified laboratory for comprehensive analysis.

“CVHH Annual Inspection List”

“EarthWise Purge Maintenance,”

®

flow detection

92 CVHH-SVX001A-EN

Recommended Maintenance

Table 20. Recommended maintenance (continued)

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
organizat ion to leak-test the chiller; this
procedure is especially important if the system
requires frequent pur ging.

(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

com ponents at m ore 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 com pressor

and internal components. Check t he following: chronic air leaks (which can cause acidic condit ions in the compressor oil and result in premature bearing
wear) and evaporator or condenser water tube leaks (water mixed with the com pressor oil can result in bearing pitting, corrosion, or excessive wear).

Table 21. Recommended m aintenance of option al features

Feature Ev e r y 3 months Ever y 6 months Ann ually

Waterbox Coatings Inspect waterbox coat ings within the

Waterbox Anodes Inspect waterbox anodes within the first

Gantries Lubricate the gantries annually. Use ConocoPhillips

Hing es

first 1–3 m onths to determine a required
maintenance schedule for your job site.
Refer to

“Waterbox and Tubesheet
Protective Coatings,” p. 97 for more

information.

1–3 months to determine a required
maintenance schedule for your job site.
Refer to

“Sacrificial Anodes,” p. 97 for

more information.

MegaPlex
Purpose (blue in color), or equivalent.

Lubricate the hinges annually. Use ConocoPhillips
MegaPlex® XD3 (gray in color), LPS® MultiPlex Multi­Purpose (blue in color), or equivalent.

®

XD3 (gray in color), LPS® MultiPlex Multi-

Compressor Oil Change

After the first six months of accumulated operation, or
after 1,000 hours operation—whichever comes first—it is
recommended to change the oil filter. It is recommended
to subscribe to the Trane annual oil analysis program
rather than automatically change the oil as part of
scheduled maintenance . Change the oil only if indicated
by the oil analysis. Use of an oil analysis program will
reduce the chiller’s overall lifetime waste oil generation
and minimize refrigerant emissions. The analysis
determines system moisture content, acid level, and wear
metal content; it can be used as a diagnostic tool. Due to
the new refrigerant and oil combination, the oil analy sis
should be performed by the Trane Chemical Laboratory.

In conjunction with other diagnostics performed by a
qualified service technician, oil analyses can provide
valuable information on the performance of the chiller to
help minimize operating and maintenance costs and
maximize its operating life. An access valve is installed in
the oil supply line, befor e the oil filter, for obtaining oil
samples.

Notes:

• Use only Trane OIL00022. A full oil change is 79.5 L

(21 gallons).

Leak Checking Based on Purge
Pump Out Time

Figure 52 has been developed to aid in determining when

to do a leak check of a chiller based on the purge pump out
time and unit siz e. This figure depicts normal purge pump­out times, small leaks and large leaks based on the chiller
tonnage.

If the purge pump-out time is in the small leak region, then
a leak check should be performed and all leaks repaired at
the earliest convenience. If the purge pump-out time is in
the large leak region, a thorough leak check of the unit
should be performed immediately to find and fix the leaks.

CVHH-SVX001A-EN 93

Recommended Maintenance

Chiller tons (per circuit)

Purge minutes/day

large leak
small leaks
t ypical operation

X39003892001A

Figure 52. Purge operation under typical and leak

conditions

RuptureGuard Maintenance

It is recommende d th at the RuptureGuard be visually
inspected and the relief valve pressure tested annually.
The test can be performed with the valve in place and the
refrigerant in the chiller.

The vent li ne drip leg must be periodically checked fo r
accumulation of water or refrigerant. Drain any
accumulation that may be present into an evacuated,
properly labeled vessel and dispose of in accordance with
local, state and federal codes.

WARNING

Hazardous Voltage!

Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Fo llow proper lockout/ tagout proced ur es to ens ur e the
power can not be inadvertently energized.

EarthWise Purge Maintenance

Maintenance requirements for an EarthWise purge system
with Tracer AdaptiView control are described in this
section. To ensure efficient and reliable purge operation,
perform all inspections and procedures at the prescribed
intervals. Keep records of inspection results to establi sh
proper service intervals. Document changes that occur in
purge activity that could provide information about chiller
performance.

WARNING

Contain Refrigerant!

Failure to follow proper procedures or the use of non­approved refrigerants, refrigerant substitute s, or
refrigerant additives could result in death or serious
injury or equipment damage. System contains oil and
refr igerant under high pressure. Recover refrigerant to
relieve pressure bef ore opening the sys tem. See unit
nameplate for refrigerant type. Do not use non­approved refrigerants, refrigerant substitute s, or
refrigerant additives.

Note: Graphic labels (shown above) are used for CE

application only.

Important:

• Before servicing, disconnect all power so urces an d

allow at least 30 minutes for capacitors to discharge.

• All electrical enclosures—unit or remote—are IP2X.

CAUTION

Hot Surfaces!

Failure to follow instructions below could result in
minor to severe burns. Surface temperatures may
exceed 148.9°C (300°F) on condensing unit and carbon
tank. Wear protective gear and allow surfaces to cool
before servicing these parts or any part located in their
vicinity.

Weekly Maintenance

P erform the following maintenance procedure on a weekly
basis:

94 CVHH-SVX001A-EN

Recommended Maintenance

1. With the purge unit operating, check the purge tank
condensing activity by observing the liquid refrigerant
flow in the moisture-indicating sight glass located in
the liquid drain line immediately after the fi lter drier
canister. A lack of visible refrigerant flow in the sight
glass indicates one of the following:

• A pump-out cycle is necessary

• A problem exists with the purge heat transfer circuit

(such as the condensing unit, expansion device, or
purge evaporator coil)

• A problem exists in the purge control subsystem

• Refrigerant vapor from the chiller condenser is

blocked or restricted

2. Check the moisture-indicator sight glass. Replace the
filter-drier core if moisture is indicated.

No te: The need for frequent changes of the filter drier

could be an indication of significant chiller air or
tube leaks.

Semi-Annual Maintenance

P erform the following maintenance procedure on a semi­annual basis:

1. Inspect the air-cooled condenser coil and clean as
needed. Clean the coil from the fan side u sing
compressed air or coil cleaner. A dirty coil will reduce
purge efficiency and capacity.

2. Inspect the purge tank and carbon tank insulation for
any damage or degradation. Make any needed repairs
to the insulation.

Annual Maintenance

Perform the following main tenance procedure on an
annual basis:

1. Perform the semi-annual maintenance procedures.

2. Open the purge control panel and check all internal
components for such problems as corrosion, terminal
tightness, or signs of overheating.

3. Change the filter-dri er assembly.

Ins pecting the Moisture Indicator

Monitor the quality of the liquid refrigerant in the chiller by
periodi cally inspecting the moisture indicator. The
ind icato r will show “ wet” whenever the chiller moisture
exceeds the levels shown in
indicator becomes more sensitive as the temperature
decreases. (The moisture i ndicator normally operates at
equipment room ambient temperatures.)

A “ wet” indication for more t han 72 hours typically
indicates that the filter-drier is saturated and should be
replaced. In some cases in which a substantial amount of
moisture has accumulated, such as when the chil ler has
been serviced, several filter-drier assembly changes may
be required before a satisfactory moisture level is

Table 22. Notice that the

achieved. A reoccurring or persistent “ wet” indication is a
sign of possible chiller air or water infiltration.

Inspect the moisture indicator only under the following
conditions:

• The chiller is operating.

• The purge unit is operating and has been allowed
sufficient time to properly remove system moisture
(allow a minimum of 72 hours after replacing filter­drier).

T able 22. Refriger ant moisture content as determined by

moisture indicator

R- 12 33zd( E)

Refrigerant
moisture level

Dry Below 20 Below 30 Below 35
Caution 20–50 30–80 35–100
Wet Above 50 Above 80 Above 100

Note: Refrigerant moisture content given in parts per million (ppm).

23 .9 °C
( 75 °F)

37 .8 °C

( 10 0°F)

51 .7 °C

( 12 5°F)

Maintaining the Moisture-Indicating Sight
Glas s

In normal operating cond itions, the moisture-ind icating
sight glass should not require maintenance beyond
keeping the sight glass clean. However, the sig ht glass
should be replaced after any major repair to the unit has
taken place, or if it is on a unit in which severe moistu re
contamination is known to have occurred.

Be aware that it is normal for the sight glass to indicate the
presence of moisture for a period of least 72 hours after it
is installed and after it has been exposed to atmosphere.
Allow a minimum of 72 hours after sight glass installation
or filter-drier service before using the sight glass to
determine the system moisture content.

Removing Air After Servicing the Chiller

Air that leaks into a chiller during servicing needs to be
removed so that the chiller can operate normally. The
purge pump-out system, which performs this funct ion,
may operate for a long time to remove the air before
cycling off for the first time. This is due to the large amount
of non-condensables and the relatively small amount of
refrigerant b eing drawn into th e pur ge tank.

Important: Do not bypass or remove the pump-out

restrictor of the EarthW ise Purge syst em.
Doing so could reduce the efficiency of the
purge system. The purge system has a
faster air exhaust rate than previous purge
systems, which makes bypassing or
removing the restrictor unnecessary.

The Daily Pumpout Limit determines how long the purge
pump-out compressor can operate continuously without
generating a Purge Daily Pumpout Exceeded diagnostic,
which will shut off the purge system. Y ou can disable the

CVHH-SVX001A-EN 95

Recommended Maintenance

X39003892001A

Daily Pumpout Limit to allow the purge to pump out for an
extended p eriod of time.

Once the level of non-condensables present in the chiller
falls to a point in which an increasing amount of refrigerant
enters the purge tank, the pump-out compressor begins to
cycle on and off. As the refrigerant in the system becomes
less contaminated with non-condensables, purge pump­out is activated less frequently.

Note: If large amounts of non-condensables are present

in the chiller, the air removal rate can be enhanced
by o perating the chiller at part-load conditions.

Leak Testing

WARNING

Hazard of Explosion!

Failure to follow recommended safe leak test
procedures could result in death or serious injury or
equipment or property-only-damage. Never use an
open flame to detect gas leaks. Explosive conditions
may occur. Use a leak test solution or other approved
methods for le a k testing.

WARNING

Hazardous Pressures!

Failure to follow these safety precautions could result
in a sudden rise of pressure possibly resulting in a
violent explosion whic h could result in death or serious
injury. If a heat source is required to raise the tank
pressure 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
not, under any circumstances apply direct flame to any
portion of the cylinder.

Important: If leak testing is required , contact a Trane

service agency.

Recommended System Maintenance

NOTICE:

P roper Water Treatment!

The use of untreated or improperly treated water in a
CenTraVac could result in sc aling, erosion, corrosion,
algae or slime. It is recommended that the services of a
qualified water treatment specialist be engaged to
determine what water treatment, if any, is required.
Trane assumes no responsibility for equipment failures
which result from untreated or improperly treated
water, or saline or brackish water.

Note: Graphic lab els (sho wn above) are used for CE

application onl y .

Condenser

Condenser tube fouling is indicated when the approach
temperature (the difference between the condensing
refrigerant temperature and the leaving condenser water
temperature) is higher than predicted.

If the annual condenser tube inspection indicates that the
tubes are fouled, two cleaning methods, mechanical and
chemical, can be used to rid the tubes of contaminants.
Use the mechanical cleaning method to remove sludge
and loose material from smooth-bore tubes.

To clean other types of tubes including internally­enhanced types, consult a qu alified service organization
for recommendations.

96 CVHH-SVX001A-EN

Recommended Maintenance

pipe
connections

circulator
pump

cleaning
solution

shutoff
valves

Figure 53. Typical chemical cleaning setup

Evaporator

Since the evaporator is typically part of a closed circuit, it
may not accumulate appreciable amounts of scale or
sludge. Normally, cleaning every three years is sufficient.
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—
regardless of the type of protective coating included—be
taken out of service within the first one to three months of
operation for inspection. Any voids or defects identified
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

Installa tion,” p. 98

2. Work a round nylon or brass bristled brush (attached to
a rod) in and out of each of the condenser water tubes
to loosen the sludge.

3. Thoroughly flush the condenser water tubes with clean
water.

Scale deposits are best removed by chemical means.
Be sure to consult any qualified chemical house in the
area (one familiar with the local water supply’s
chemical mineral content) for a recommended
cleani ng solution suitable for the job.

No te: A standard condenser water circuit is

composed solely of copper, cast iron, and steel.

to remove water box covers.

NOTICE:

Unit Corrosion Damage!

Failure to follow proper proced ures when using
corrosive chemicals to cl ean water side of unit could
result in corrosion damage to the unit and tubes. It is
recommended that the services of a qualified ch emical
cleaning firm be used. Proper personal protective
equipment as recommended by the chemical
manufacturer should be used. Refer to the chemicals
MSDS sheet for proper safety procedures.

Important: All of the materials used in the external

circulation system, the quantity of the
solution, the duration of the cleaning
period, and any required safety precautions
should be approved by the company
furnishing the materials or performing the
cleaning. Rememb er, however, that
whenever the chemical tube cl eaning
method is used, it must be followed up with
mechanical tube cleaning, flushing and
inspection.

CVHH-SVX001A-EN 97

system within three months. Only when initial inspections
show no problems are present should subseq uent
maintenance intervals be increased.

Sacrificial Anodes

The replacement schedule for the optional zinc or
magnesium anodes can vary greatly with the
aggressiveness of the water that is in the system. Some
sites could require anode replacement every two to three
months while other sites may require anode replacement
every two to three years. Tran e recommends that anode
inspection for wear sometime within the first several
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 determin e if the anode material
selected is correct for the application.

NOTICE:

Equipment Damage!

Failure to follow instructions could res ul t in equipment
damage. Do NOT use Teflon-based tape or paste on
anode; a s mall amount of liquid sealant (Loc tite®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.

As needed after draining the waterbox, use a 63.5 mm (2-1/
2 in.) wrench to remove/insta ll Trane-supplied waterbox
anodes.

Waterbox Removal and Installation

LIFTING

LOCATION

LIFTING

LOCATION

Lifting
location

Lifting
location

LIFTING

LOCATION

LIFTING

LOCATION

Lifting
location

Lifting
location

Important: Only qualified technicians should perform

the installation and servicing of this
equipment.

Discussion

This section will discuss recommended lifting. Proper
lifting technique will vary based on mechanical room
layout.

• It is the responsibility of the person(s) performing the
work to be properly trained in the safe practice of
rigging , lifting, securing, and fastening of the
waterbox.

• It is the responsibility of the person(s) providing and
using the rigging and lifting devices to inspect these
devices to ensure they are free from defect and are
rated to meet or exceed the published weight of the
waterbox.

• Always use rigging and lifting devices in accordance
with the applicable instru ctions for such device.

Procedure

WARNING

Heavy Objects!

Failure to properly lift waterbox c ould result in death or
serious injury. Each of the individual cables (chains or
slings) used to lift the waterbox must be capable of
supporting the entire weight of the water box. The
cables (chains or slings) must be rated for overhead
lifting applicati ons with an acceptable working load
limit. Refer to

Table 24, p. 99 for waterbox weights.

5. Disconnect water pipes, if connected.

6. Remove waterbox bolts.

7. Lift the waterbox away from the shell.

Figure 54. Waterbox lifting—condenser and evaporator

lifting points

Review mechanical room limitations and determine the
safest meth od or methods of rigging and lifting th e
waterboxes.

1. Determine the type and siz e of chiller being serviced.
Refer t o Trane nameplate locate d on chiller control
panel.

Important: This literature contains rigging and lifting

information only for T rane CTV chillers built
in La Crosse. For Trane CTV chiller s built
outside the United States, refer to literature
provided b y the applicable manufacturing
location.

2. The rated lifting capacity of the lifting shackle must
meet or exceed the published weight of the waterbox.
Verif y the waterbox weight from the latest published
literature.

3. Ensure that the lift connection device has the correct
size for the waterbox lifting hole.

4. Properly connect the shackle to the
waterbox.Fig ure 54, p. 98

98 CVHH-SVX001A-EN

WARNING

Overhead Hazard!

Failure to follow instructions could result in death or
serious injuries. Never stand below or in close
proximity to heavy objects while they are suspended
from, or being lifted by, a lift ing device in case the
object drops.

8. Stor e waterbox in a safe and secure locatio n and
position.

Note: Do not leave waterbox suspended from lifting

device.

Waterbox Removal and Installation

Reassembly

Once service is co mplete, the wat erbox sh ould be
reinstalled on the shell following all previous procedures
in reverse. Use new O-rings or gaskets on all join ts after
thorou ghly cleaning each joint.

• Torque waterbox bolts (see

Table 24. CVHH waterbox weights

Shell
Siz e Descr ipti on

Evapora tor, 1034.2 kPa (150 psi ) NA NA

Evapora tor, 2068.4 kPa (300 psi)

100

Condenser, 1034.2 kPa (150 psi) NA NA

Condenser, 2068.4 kPa (300 psi) NA NA

Evapora tor, 1034.2 kPa (150 psi ) NA NA

Evapora tor, 2068.4 kPa (300 psi)

130

Condenser, 1034.2 kPa (150 psi) NA NA

Condenser, 2068.4 kPa (300 psi) NA NA

Evapora tor, 1034.2 kPa (150 psi ) NA NA

160

Evapora tor, 2068.4 kPa (300 psi)

Evapora tor, 1034.2 kPa (150 psi ) NA NA

Evapora tor, 2068.4 kPa (300 psi)

200

Condenser, 1034.2 kPa (150 psi) NA NA

Condenser, 2068.4 kPa (300 psi) NA NA NA

Evapora tor, 1034.2 kPa (150 psi ) NA NA

Evapora tor, 2068.4 kPa (300 psi)

220

Condenser, 1034.2 kPa (150 psi) NA NA

Condenser, 2068.4 kPa (300 psi) NA NA

Table 23).

Weig ht

kg ( lb)

(814)

(950)

(1200)

(2211)

(3218)

Non- Marine

Plate

Lifting

Hole

mm

( in.)

369

431

544

1003

1459

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

Weight
kg ( lb)

(1132)

Torque Requirements

Table 23. CenTraVac torque

Bolt Size

in. ( mm)

3/ 8 33.9 (2 5) 16.3–24.4 (12–18)
1/ 2 94.9 (7 0) 44.7–67.8 (33–50)
5/ 8 203.4 (150) 94.9 –122.0 (70–90)
3/ 4 339.0 (250) 142.4–210.2 (105–155)

Non- Marine

Dom e

Lifting

314

(693)

(448)

(642)

(766)

(589)

(851)

(863)

(652)

(700)

(802)

(763)

(0.469)

NA NA

203

(0.469)

291

(0.469)

347

(0.469)

NA NA

267

(0.469)

386

(0.469)

391

(0.469)

NA NA

295

(0.469)

NA NA

317

(0.469)

(0.469)

364

(0.469)

NA NA

346

(0.469)

513

(0.469)

Hole

mm

( in.)

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

Marine Plate

Cover

Weight
kg ( lb)

NA NA

369

(814)

NA NA

NA NA

NA NA

320

(705)

NA NA

NA NA

NA NA

411

(906)

581

(1282)

799

(1763)

NA

782

(1724)

772

(1702)

1123

(2476)

NA NA

NA NA

Gasket type O-ring

N·m ( ft·lb)

Marine Dom e

Cover

Lifting

Hole

mm

Weig ht

( in.)

(0.469)

(0.469)

(0.469)

(0.469)

(0.469)

(0.469)

(0.469)

(0.469)

(0.469)

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

kg ( lb)

258

(569)

NA NA

147

(324)

198

(436)

292

(645)

NA NA

185

(409)

255

(562)

310

(683)

NA NA

NA NA

NA NA

NA NA

NA NA

NA NA

NA NA

246

(543)

321

(708)

Lifting

Hole

mm

( in. )

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

11.9

(0.469)

Flat

N·m ( ft·lb)

Marine

Waterbox

Weight

kg ( lb)

586

(1292)

619

(1365)

432

(953)

542

(1195)

645

(1423)

693

(1527)

529

(1166)

686

(1513)

822

(1813)

878

(1937)

870

(1918)

1292

(2849)

700

(1544)

970

(2138)

1214

(2677)

1876

(4137)

724

(1598)

862

(1901)

Lifting

Hole

mm

( in.)

21.8

(0.858)

35.1

(1.38)

21.8

(0.858)

21.8

(0.858)

21.8

(0.858)

35.1

(1.38)

21.8

(0.858)

21.8

(0.858)

21.8

(0.858)

35.1

(1.38)

35.1

(1.38)

35.1

(1.38)

21.8

(0.858)

21.8

(0.858)

35.1

(1.38)

35.1

(1.38)

21.8

(0.858)

21.8

(0.858)

CVHH-SVX001A-EN 99

Waterbox Removal and Installation

Table 24. CVHH waterbox weights (continued)

Shell
Siz e Descr ipti on

10H

13H

20H

22H

Heat Recovery Co ndenser,

1034.2 kPa (150 psi)
Heat Recovery Co ndenser,

1034.2 kPa (150 psi)
Heat Recovery Co ndenser,

1034.2 kPa (150 psi)
Heat Recovery Co ndenser,

1034.2 kPa (150 psi)

Non- Marine

Plate

Weig ht

kg ( lb)

917

(2022)

1106

(2439)

1247

(2750)

1747

(3853)

Lifting

Hole

mm

( in.)

21.8

(0.858)

21.8

(0.858)

21.8

(0.858)

21.8

(0.858)

Non- Marine

Dom e

Lifting

Hole
Weight
kg ( lb)

NA NA NA NA NA NA NA NA

NA NA NA NA NA NA NA NA

NA NA NA NA NA NA NA NA

NA NA NA NA NA NA NA NA

mm

( in.)

Marine Plate

Cover

Lifting

Weight
kg ( lb)

Hole

mm

( in.)

Marine Dom e

Cover

Lifting

Weig ht

kg ( lb)

Hole

mm

( in. )

Marine

Waterbox

Weight

kg ( lb)

Lifting

Hole

mm

( in.)

100 CVHH-SVX001A-EN