Trane Stealth Air-Cooled Chiller Model RTAE Installation and Maintenance Manual

Installation, Operation,

and Maintenance

Stealth™ Air-Cooled Chiller Model RTAE

150 to 300 Nominal Tons

SAFETY WARNING

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 requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.

October 2014

RTAE-SVX001B-EN

Warnings, Cautions and Notices

Warnings, Cautions and Notices. Note that warnings, cautions and notices appear at appropriate intervals throughout this manual. Warnings are provided to alert installing contractors to potential hazards that could result in death or personal injury. Cautions are designed to alert personnel to hazardous situations that could result in personal injury, while notices indicate a situation that could result in equipment or property-damage-only accidents.

Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

Read this manual thoroughly before operating or servicing this unit.

ATTENTION: Warnings, Cautions and Notices appear at appropriate sections throughout this literature. Read these carefully:

WARNING

CAUTIONs

NOTICE:

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.

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

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, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment.Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs such as HCFCs and HFCs.

Responsible Refrigerant Practices!

Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified.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 requirements that

must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

WARNING

Refrigerant under High Pressure!

System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening the system. See unit nameplate for refrigerant type. Do not use non-approved refrigerants, refrigerant substitutes, or refrigerant additives. Failure to recover refrigerant to relieve pressure or the use of nonapproved refrigerants, refrigerant substitutes, or refrigerant additives could result in an explosion which could result in death or serious injury or equipment damage.

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 resistant 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 Classification and Labelling of Chemicals) guidelines for information on allowable personal exposure levels, proper respiratory protection and handling instructions.

•If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all PPE in accordance

with OSHA, NFPA 70E, or other country-specific requirements for arc flash protection, PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING, DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC FLASH CLOTHING. ENSURE ELECTRICAL METERS AND EQUIPMENT ARE PROPERLY RATED FOR INTENDED VOLTAGE.

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

© 2014Trane All rights reserved

RTAE-SVX001B-EN

Warnings, Cautions and Notices

WARNING

Proper Field Wiring and Grounding

Required!

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/state electrical codes. Failure to follow code could result in death or serious injury.

Factory Warranty Information

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

All Unit Installations

Startup MUST be performed byTrane, or an authorized agent ofTrane, to VALIDATE this WARRANTY. Contractor must provide a two-week startup notification toTrane (or an agent ofTrane specifically authorized to perform startup).

Copyright

This document and the information in it are the property of Trane, 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.

Trademarks

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

Revision History

RTAE-SVX001B-EN (29 Oct 2014)

•Added transformer option.

•Added harmonic filter option.

•Added 150T and 165T single circuit units.

•Added extreme low ambient option.

•Added seismic isolation option.

•Added CE/PED option.

•Updated unit weights and isolator information.

•Updated drive cooling fluid volumes.

•Modified oil sump check procedure.

RTAE-SVX001A-EN (24 Sep 2013)

New release.

RTAE-SVX001B-EN

3

Table of Contents
Warnings, Cautions and Notices . . . . . . . . . .	2
Factory Warranty Information . . . . . . . . . . .	3
Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
Revision History . . . . . . . . . . . . . . . . . . . . . . .	3
Model Number Description . . . . . . . . . . . . . . .	6
Outdoor Unit Nameplate . . . . . . . . . . . . . . .	6
Compressor Nameplate . . . . . . . . . . . . . . . .	6
Model Number Descriptions . . . . . . . . . . . . . .	7
Unit Model Number . . . . . . . . . . . . . . . . . . . .	7
Compressor Model Number . . . . . . . . . . . .	8
Compressor Serial Number . . . . . . . . . . . . .	8
General Information . . . . . . . . . . . . . . . . . . . . .	9
Unit Description . . . . . . . . . . . . . . . . . . . . . . .	9
Accessory/Option Information . . . . . . . . . . .	9
General Data . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
Drive Cooling System . . . . . . . . . . . . . . . . .	11
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . .	12
Unit Inspection . . . . . . . . . . . . . . . . . . . . .	12
Inspection . . . . . . . . . . . . . . . . . . . . . . . . .	12
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
Installation Requirements . . . . . . . . . . . . . .	13
Dimensions and Weights . . . . . . . . . . . . . . . .	14
Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . .	14
Service Clearances . . . . . . . . . . . . . . . . . . . .	14
Installation Mechanical . . . . . . . . . . . . . . . . . .	15
Location Requirements . . . . . . . . . . . . . . . .	15
Sound Considerations . . . . . . . . . . . . . . .	15
Foundation . . . . . . . . . . . . . . . . . . . . . . . .	15
Clearances . . . . . . . . . . . . . . . . . . . . . . . . .	15
Center of Gravity . . . . . . . . . . . . . . . . . . . . .	20
Isolation and Sound Emission . . . . . . . . . .	20
Unit Isolation and Leveling . . . . . . . . . . .	20
Compressor Shipping Bolt Removal . . . .	23
Units with InvisiSound™ Ultimate Option
(Model Number Digit 12 = 3) . . . . . . . . . .	23
Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . .	23
Evaporator Piping Components . . . . . . .	25

Pressure Relief Valves . . . . . . . . . . . . . . . . . .26

Evaporator Waterside Pressure Drop

Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Freeze Protection . . . . . . . . . . . . . . . . . . . . . .29

Low Evaporator Refrigerant Cutout,

Glycol Requirements . . . . . . . . . . . . . . . . . . .30

Installation Electrical . . . . . . . . . . . . . . . . . . . . .31

General Recommendations . . . . . . . . . . . . .31

Adaptive Frequency™ Drive (AFD3)

Capacitor Discharge . . . . . . . . . . . . . . . . . .32

Units with Nitrogen Charge Option . . . . .32

Installer-Supplied Components . . . . . . . . . .32

Power Supply Wiring . . . . . . . . . . . . . . . . .33

Control Power Supply . . . . . . . . . . . . . . . .34

Service Power Connection . . . . . . . . . . . .34

Heater Power Supply . . . . . . . . . . . . . . . . .34

Interconnecting Wiring . . . . . . . . . . . . . . . . .35

Chilled Water Pump Control . . . . . . . . . . .35

Programmable Relays . . . . . . . . . . . . . . . . . .35

Relay Assignments Using Tracer™ TU . . .36

Low Voltage Wiring . . . . . . . . . . . . . . . . . . . .36

Emergency Stop . . . . . . . . . . . . . . . . . . . . .36

External Auto/Stop . . . . . . . . . . . . . . . . . . .36

External Circuit Lockout –

Circuit #1 and #2 . . . . . . . . . . . . . . . . . . . . .36

Ice Building Option . . . . . . . . . . . . . . . . . .37

External Chilled Water Setpoint (ECWS)

Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

External Demand Limit Setpoint (EDLS)

Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Chilled Water Reset (CWR) . . . . . . . . . . . .38

Transformer Power Rating . . . . . . . . . . . . . .39

Communications Interface . . . . . . . . . . . . . .39

LonTalk Interface (LCI-C) . . . . . . . . . . . . . .39

BACnet Interface (BCI-C) . . . . . . . . . . . . . .39

Modbus Remote Terminal Unit Interface .39

Operating Principals . . . . . . . . . . . . . . . . . . . . .40

Refrigeration Circuits . . . . . . . . . . . . . . . . . .40

Refrigeration Cycle . . . . . . . . . . . . . . . . . . . .40

Refrigerant R-134a . . . . . . . . . . . . . . . . . . . . .40

4	RTAE-SVX001B-EN

Compressor and Lube Oil System .	. . . . . 40
Condenser and Fans . . . . . . . . . . . . .	. . . . . 40
Evaporator . . . . . . . . . . . . . . . . . . . . . .	. . . . . 41
Drive Cooling System . . . . . . . . . . . .	. . . . . 41
Controls . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . 42
UC800 Specifications . . . . . . . . . . . . .	. . . . . 42
Wiring and Port Descriptions . . . .	. . . . . 42
Communication Interfaces . . . . . . .	. . . . . 43
Rotary Switches . . . . . . . . . . . . . . .	. . . . . 43
LED Description and Operation . . .	. . . . . 43
Tracer AdaptiView TD7 Display . . . .	. . . . . 43
Operator Interface . . . . . . . . . . . . .	. . . . . 43
Main Display Area/Home Screen .	. . . . . 44
Viewing Chiller Operating Modes	. . . . . 44
Alarms . . . . . . . . . . . . . . . . . . . . . .	. . . . . 46
Reports . . . . . . . . . . . . . . . . . . . . . .	. . . . . 47
Equipment Settings . . . . . . . . . . . .	. . . . . 49
Display Settings . . . . . . . . . . . . . . .	. . . . . 51
Viewing the Settings Screen . . . .	. . . . . 51
Cleaning the Display . . . . . . . . . . .	. . . . . 52
Security Settings . . . . . . . . . . . . . .	. . . . . 52
Disabling/Enabling Security . . . . .	. . . . . 52
InvisiSound Ultimate - Noise Reduction
Mode . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . 54
Tracer™ TU . . . . . . . . . . . . . . . . . . . . .	. . . . . 55
Pre-Start . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . 56
Start-Up and Shutdown . . . . . . . . . . . .	. . . . . 57
Unit Start-Up . . . . . . . . . . . . . . . . . . . .	. . . . . 57
Temporary Shutdown And Restart .	. . . . . 57
Extended Shutdown Procedure . . . .	. . . . . 57
Seasonal Unit Start-Up Procedure .	. . . . . 58
System Restart After Extended Shutdown 58
Sequence of Operation . . . . . . . . . . .	. . . . . 59
Software Operation Overview . . . .	. . . . . 59
Timelines . . . . . . . . . . . . . . . . . . . . .	. . . . . 59
Power Up Diagram . . . . . . . . . . . . .	. . . . . 60
Power Up to Starting . . . . . . . . . . .	. . . . . 61
Stopped to Starting . . . . . . . . . . . .	. . . . . 62
Running (Lead Compressor/Circuit Start
and Run) . . . . . . . . . . . . . . . . . . . . .	. . . . . 63

Running (Lag Compressor/Circuit

Start and Run) . . . . . . . . . . . . . . . . . . . . . .63

Satisfied Setpoint . . . . . . . . . . . . . . . . . . . .64

Normal Shutdown to Stopped or

Run Inhibit . . . . . . . . . . . . . . . . . . . . . . . . .65

Immediate Shutdown to Stopped or

Run Inhibit . . . . . . . . . . . . . . . . . . . . . . . . .65

Ice Making (Running to Ice Making to Running) . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Ice Making (Auto to Ice Making to Ice Making Complete) . . . . . . . . . . . . . . . . . . .67

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Recommended Maintenance . . . . . . . . . . . .69

Weekly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Annual . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Refrigerant and Oil Charge Management .69

Lubrication System . . . . . . . . . . . . . . . . . . . .69

Oil Sump Level Check . . . . . . . . . . . . . . . .69

Drive Cooling System . . . . . . . . . . . . . . . . . .71

Service Intervals . . . . . . . . . . . . . . . . . . . . .71

Unit Diagnostics . . . . . . . . . . . . . . . . . . . . .71

pH Test . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Pressure Relief Cap . . . . . . . . . . . . . . . . . .71

Drive Cooling Expansion Tank . . . . . . . . .71

Condenser Coils — Cleaning and

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Coil Cleaning and Inspection Interval . . . .72

Cleaning Air Side of RTAE Coils . . . . . . . .72

Cleaning Coated Coils . . . . . . . . . . . . . . . .72

Coil Corrosion Protection Inspection . . . .72

Reinstallation of Compressor Shipping

Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Servicing Chiller Roof . . . . . . . . . . . . . . . .72

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

AFD Diagnostics . . . . . . . . . . . . . . . . . . . . . . .73

Main Processor Diagnostics . . . . . . . . . . . . .76

Communication Diagnostics . . . . . . . . . . . .85

Operator Display Diagnostics and

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Unit Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Log and Check Sheet . . . . . . . . . . . . . . . . . . . .90

RTAE-SVX001B-EN

5

Model Number Description

Nameplates

The Stealth™ outdoor unit nameplates are applied to the exterior of the Control Panel. A compressor nameplate is located on each compressor. When the unit arrives, compare all nameplate data with ordering, submittal, and shipping information.

Outdoor Unit Nameplate

See Figure 1 for a typical unit nameplate.The outdoor unit nameplate provides the following information:

•Unit model and size description.

•Unit serial number.

•Identifies unit electrical requirements.

•Lists correct operating charges of R-134a and refrigerant oil (Trane OIL00311).

•Lists unit test pressures.

•Identifies installation, operation and maintenance and service data literature.

•Lists drawing numbers for unit wiring diagrams.

of typical unit model number and the coding system for each.

Each position, or group of positions, in the model number is used to represent a feature. For example, in the first table, position 08 of the unit model number, Unit Voltage, contains the number “4”.A 4 in this position means that the unit voltage is 460/60/3.

Unit Model Number. An example of a typical unit model number (M/N) is:

RTAE 200F UA01 AA1F N1X1 A1A0 0CB0 X02X AA03 000

Model number digits are selected and assigned in accordance with the definitions as listed in “Unit Model Number,” p. 7.

Compressor Nameplate

The compressor nameplate provides the following information:

•Compressor model number. See “Compressor Model Number,” p. 8.

•Compressor serial number. See “Compressor Serial Number,” p. 8.

Model Number Coding System

The model numbers for the unit and the compressor are composed of numbers and letters that represent features of the equipment. Shown in the following table is a sample

•Compressor electrical characteristics.

•Utilization range.

•Recommended refrigerant.

Figure 1.	Typical unit nameplate
6	RTAE-SVX001B-EN

Model Number Descriptions

Unit Model Number

Digits 1,2 — Unit Model

RT = Rotary Chiller

Digits 3— Unit Type

A = Air-cooled

Digits 4 — Development

Sequence

E = Development Sequence

Digits 5-7 — Nominal Capacity

149 = 150 NominalTons Single Circuit

164 = 165 NominalTons Single Circuit

150 = 150 NominalTons

165 = 165 NominalTons

180 = 180 NominalTons

200 = 200 NominalTons

225 = 225 NominalTons

250 = 250 NominalTons

275 = 275 NominalTons

300 = 300 NominalTons

Digit 8— Unit Voltage

A	=	200/60/3
B	=	230/60/3
C	=	380/50/3
D	=	380/60/3
E	=	400/50/3
F	=	460/60/3
G	=	575/60/3
H	=	400/60/3

Digit 9 — Manufacturing

Location

U = Trane Commercial Systems,

Pueblo, CO USA

Digits 10, 11— Design Sequence

** = Factory assigned

Digit 12 — Unit Sound Package

1= InvisiSound™ Standard Unit

2= InvisiSound Superior

(Line Wraps, Reduced Fan

Speed)

3= InvisiSound Ultimate

(Compressor Sound Attenuation, Line Wraps, Reduced Fan Speed)

Digit 13 — Agency Listing

0	=	No Agency Listing
A	=	UL/CUL Listing
C	=	CE European Safety Standard

Digit 14 — Pressure Vessel Code

A	=	ASME Pressure Vessel Code
D	=	Australia Pressure Vessel Code

C= CRN or Canada Equivalent Pressure Vessel Code

L = Chinese Pressure Vessel Code

P= PED European Pressure Vessel

Code

Digit 15 — Factory Charge

1= Refrigerant Charge HFC-134a

2= Nitrogen Charge

Digit 16 — Evaporator

Application

F = Standard Cooling

(40 to 68°F/5.5 to 20°C)

G= LowTemp Process (<40°F LeavingTemp)

C= Ice-making (20 to 68°F/-7 to 20°C) w/ Hardwired Interface

Digit 17 — Evaporator

Configuration

N	=	2 Pass Evaporator
P	=	3 Pass Evaporator

Digit 18 — Evaporator Fluid

Type

1 = Water

2= Calcium Chloride

3= Ethylene Glycol

4= Propylene Glycol

5= Methanol

Digit 19 — Water Connection

X	=	Grooved Pipe
F	=	Grooved Pipe + Flange

Digit 20 — Flow Switch

1= Factory Installed - Other Fluid (15 cm/s)

2= Factory Installed - Water 2 (35 cm/s)

3= Factory Installed - Water 3 (45 cm/s)

Digit 21 — Insulation

A= Factory Insulation - All Cold Parts 0.75”

B= Evaporator-Only Insulation - High Humidity/Low EvapTemp 1.25”

Digit 22 — Unit Application

1	=	Standard Ambient
		(32 to 105°F/0 to 40.6°C)
2	=	Low Ambient
		(0 to 105°F/-17.7 to 40.6°C)
3	=	Extreme Low Ambient
		(-20 to 105°F/-28.9 to 40.6°C)
4	=	High Ambient
		(32 to 125°F/0 to 52°C)
5	=	Wide Ambient
		(0 to 125°F/-17.7 to 52°C)

Digit 23 — Condenser Fin Options

A = Aluminum Fins with Slits

D= CompleteCoat™ Epoxy Coated Fins

Digits 24, 25 — Not Used

Digit 26 — Power Line

Connection Type

A = Terminal Block

C= Circuit Breaker

D= Circuit Breaker w/ High Fault Rated Control Panel

Digit 27 — Short Circuit Current

Rating

A= Default A Short Circuit Rating

B= High A Short Circuit Rating

Digit 28 — Transformer

0	=	NoTransformer
1	=	Factory InstalledTransformer

Digit 29 — Line Voltage

Harmonic Mitigation

X	=	Line Reactors (~30%TDD)
1	=	Filter circuit (IEEE519 Compliant)

Digit 30 — Electrical

Accessories

0 = No Convenience Outlet

C= 15A 115V convenience Outlet (Type B)

Digit 31 — Remote

Communication Options

0= No Remote Digital Communication

1= LonTalk® Interface LCI-C (Tracer™ Compatible)

2= BACnet® MS/TP Interface (Tracer compatible)

3= ModBus™ Interface

Digit 32 — Hard Wire

Communication

X = None

A= Hard Wired Bundle - All

B= Remote Leaving WaterTemp Setpoint

C= Remote Leaving temp and Demand Limit Setpoints

D= Programmable Relay

E= Programmable Relay and Leaving Water and Demand

Limit

Setpoint

F= Percent Capacity

G= Percent Capacity and Leaving Water and Demand Limit

Setpoint

H= Percent Capacity and Programmable Relay

Digit 33 — Not Used

RTAE-SVX001B-EN

7

Model Number Descriptions

Digit 34 — Structural Options

A= Standard Unit Structure

B= Seismic to International Building Code (IBC)

C= California Office of Statewide Health Planning and Development (OSHPD) Certification

D= Wind Load for Florida Hurricane 175 MPH

E= Seismic (IBC) and Wind Load

F= OSHPD and Wind Load

Digit 35 — Appearance Options

0	=	No Appearance Options
A	=	Architectural Louvered Panels

Digit 36 — Unit Isolation

0= No Isolation

1= Elastomeric Isolators

3 = Seismic Rated Isopads

Digit 37 — Not Used

0 = Not Used

Digit 38 — Not Used

0 = Not Used

Digit 39 — Special

0	=	None
S	=	Special

Compressor Model

Number

Digits 1-4 — Compressor Type

CHHS= Positive displacement, helical rotary (twin screw) hermetic compressor

Digit 5 — Frame Size

R= R Frame: 70 - 100 tons

S= S Frame: 112 - 165 tons

Digit 6— Motor Length

B= 145 mm

C= 170 mm

E= 165 mm

F= 190 mm

Digit 7 — Motor Winding

Characteristics

*= Factory assigned

Digit 8 — Volume Ratio

B = High Volume Ratio

Digit 9 — Refrigerant

1 = R-134a

Digits 10-11— Design Sequence

** = Factory assigned

Compressor Serial

Number

Digits 1-2 —Year

YY= Last two digits of year of manufacture

Digit 3— Week

WW= Week of build, from 00 to 52

Digit 5 — Day

1	=	Monday
2	=	Tuesday
3	=	Wednesday
4	=	Thursday
5	=	Friday
6	=	Saturday
7	=	sunday

Digits 6-8 — Coded Time Stamp

TTT = Used to ensure uniqueness of serial number

Digit 9 — Assembly Line

Assembly line compressor was built on. Varies with facility

Digit 10— Build Location

A = Monterrey

8	RTAE-SVX001B-EN

General Information

Unit Description

The 150-300 ton Stealth™ units are helical-rotary type, aircooled liquid chillers designed for installation outdoors. The compressor circuits are completely assembled, hermetic packages that are factory-piped, wired, leaktested, dehydrated, and tested for proper control operation before shipment.

Chilled water inlet and outlet openings are covered for shipment.The Stealth featuresTrane’s exclusive Adaptive Control ™ logic, which monitors the control variables that govern the operation of the chiller unit. Adaptive Control logic can adjust capacity variables to avoid chiller shutdown when necessary, and keep producing chilled water. All unit sizes are available with two independent refrigerant circuits. A single refrigeration circuit option is available for 150 and 165T units. Each compressor is controlled by a variable speed Adaptive Frequency™ Drive Generation 3 (AFD3). Each refrigerant circuit is provided with filter, sight glass, electronic expansion valve, and charging valves.The shell-and-tube type evaporator is manufactured in accordance with ASME standards or other international codes. Each evaporator is fully insulated and is equipped with water drain and vent connection. As an option, a convenience outlet can be supplied.

Units are shipped with full oil charge and can be ordered with either a factory refrigerant charge, or optional nitrogen charge.

Figure 2. Typical Stealth RTAE

Accessory/Option Information

Check all the accessories and loose parts which are shipped with the unit against the shipping list. Included in these items will be water vessel drain plugs, electrical diagrams, and service literature, which are placed inside the control panel for shipment.

If optional elastomeric isolators are ordered with unit (model number digit 36 = 1), they are shipped mounted on diagonal supports on the end of the unit opposite control panel. See Figure 3 and Figure 4.

If optional seismic isopads are selected (model number digit 36= 2), they will be shipped inside the unit control panel.

Figure 3. Elastomeric isolator shipping location

Elastomeric Isolator

Shipping Locations

(not all isolators shown -

quantity varies with unit configuration)

Figure 4. Elastomeric isolators attached for shipping

RTAE-SVX001B-EN

9

General Data

General Data

Table 1. General data table

Unit Size (tons)		150	165	180	200	225	250	275	300		150SC	165SC
Compressor Model		CHHSR	CHHSR	CHHSR	CHHSR	CHHSS	CHHSS	CHHSS	CHHSS		CHHSS	CHHSS
Quantity	#	2	2	2	2	2	2	2	2		1	1
Evaporator
Water Storage	(gal)	17.5	18.7	21.9	23.9	26.6	28.7	33.0	36.0		17.3	17.3
	(L)	66.1	70.9	82.8	90.5	100.6	108.8	125.0	136.1		65.6	65.6
				2 Pass arrangement
Minimum Flow	(gpm)	171	187	202	228	261	288	318	354		169	169
	(l/s)	10.8	11.8	12.7	14.4	16.5	18.2	20.1	22.3		10.7	10.7
Maximum Flow	(gpm)	626	684	742	835	957	1055	1165	1299		620	620
	(l/s)	39.5	43.1	46.8	52.7	60.4	66.5	73.5	81.9		39.1	39.1
				3 Pass arrangement
Minimum Flow	(gpm)	114	124	135	152	174	192	212	236	113		113
	(l/s)	7.2	7.8	8.5	9.6	11.0	12.1	13.4	14.9	7.1		7.1
Maximum Flow	(gpm)	417	456	495	557	638	703	777	866	414		414
	(l/s)	26.3	28.8	31.2	35.1	40.2	44.3	49.0	54.6	26.1		26.1
Condenser
Qty of Coils		8	10	10	12	12	12	14	16	8		10
Coil Length	(in)	78.74	78.74	78.74	78.74	78.74	78.74	78.74	78.74	78.74		78.74
	(mm)	2000	2000	2000	2000	2000	2000	2000	2000	2000		2000
Coil Height	(in)	50	50	50	50	50	50	50	50	50		50
	(mm)	1270	1270	1270	1270	1270	1270	1270	1270	1270		1270
Fins/Ft		192	192	192	192	192	192	192	192	192		192
Rows		3	3	3	3	3	3	3	3	3		3
Condenser Fans
Quantity	#	8	10	10	12	12	12	14	16	8		10
Diameter	(in)	37.5	37.5	37.5	37.5	37.5	37.5	37.5	37.5	37.5		37.5
	(mm)	953	953	953	953	953	953	953	953	953		953
Total Airflow	(cfm)	107,392	134,240	134,240	161,088	161,088	161,088	187,936	214,784	107,392		132,240
	(m3/hr)	182,460	228,075	228,075	273,690	273,690	273,690	319,305	364,920	182,460		228,075
Tip Speed (ft/min)		8700	8700	8700	8700	8700	8700	8700	8700	8700		8700
	(M/S)	44.2	44.2	44.2	44.2	44.2	44.2	44.2	44.2	44.2		44.2

Ambient Temperature Range
Standard Ambient	°F (°C)					32 to 105 (0 to 40.6)
Low Ambient	°F (°C)					0 to 105 (-17.7 to 40.6)
Extreme Low Ambient	°F (°C)					-20 to 105 (-28.9 to 40.6)
High Ambient	°F (°C)					32 to 125 (0 to 52)
Wide Ambient	°F (°C)					0 to 125 (-17.7 to 52)
General Unit
Refrigerant					HFC-134a					HFC-134a
Refrigerant Ckts	#					2					1
Minimum Load	%	20	18	17	15	20	18	16	15	30	27
Refrigerant Charge/ckt	(lbs)	172	181	210	218	265	261	318	325	322	346
	(kg)	78	82	95	99	120	118	144	148	146	157
Oil			Trane OIL00311 (bulk)/OIL00315 (1 gal)/OIL00317 (5 gal)
Oil Charge/ckt	(gal)	3.0	3.0	3.0	3.0	4.0	4.0	4.0	4.0	4.0	4.0
	(L)	11.4	11.4	11.4	11.4	15.1	15.1	15.1	15.1	15.1	15.1

10	RTAE-SVX001B-EN

General Data

Drive Cooling System

Drive cooling fluid volumes are dependent on unit configuration.

•Use Table 2 for units that meet the following criteria:

•Model number digits 10, 11 = AA

•Use Table 2 for units that meet the following criteria:

•Model number digits 10, 11 = AB

•AND Digits 28, 29 = 0X

Table 2. Drive cooling with load inductor

•Use Table 2 for units that meet the following criteria:

•Model number digits 10, 11 = AC

•AND Digits 3-7 = 225, 250, 275 or 300

•AND Digit 22 = 1 or 2

•AND Digits 28, 29 = 0X

•Use Table 3 for all other unit configurations.

				Unit Size (tons)
			Standard Length Unit
		150				225-250			275-300
			165-200
	gal	l	gal	l		gal	l		gal	l
Fluid Type			Trane Heat Transfer Fluid CHM01023
Fluid Volume
Ckt 1	1.74	6.58	1.83	6.92		2.00	7.58		2.09	7.92
Ckt2	1.93	7.30	2.27	8.59		2.44	9.24		2.58	9.78
Total	3.67	13.88	4.10	15.51		4.44	16.82		4.67	17.69

Table 3. Drive cooling without load inductor

								Unit Size (tons)
			Standard Length Unit								Extended Length Units(a)
	150S - 165S			150		165-250		275-300		150S - 165S		150		165-250		275-300
	gal	l		gal	l	gal	l	gal	l	gal	l	gal	l	gal	l	gal	l
Fluid Type							Trane Heat Transfer Fluid CHM01023
FluidVolume
Ckt 1	1.28	4.86		1.14	4.30	1.23	4.64	1.32	4.98	1.37	5.20	1.30	4.93	1.32	4.98	1.41	5.33
Ckt2	n/a	n/a		1.32	5.01	1.67	6.31	1.81	6.84	n/a	n/a	1.67	6.31	1.81	6.84	1.95	7.38
Total	1.28	4.86		2.46	9.31	2.89	10.95	3.12	11.83	1.37	5.20	2.97	11.23	3.12	11.83	3.36	12.71

(a) Units are extended length if either of the following are selected: Transformer (model number digit 28 = 1)

Harmonic Filtration Option (model number digit 29 = 1)

Units without Harmonic Filtration Option or Transformer (digits 28, 29 = 0X) are standard length.

NOTICE:

Equipment Damage!

Use only Trane Heat Transfer Fluid P/N CHM01023. This fluid is a direct use concentration and is not to be diluted. Do not top off with water or any other fluid. Use of unapproved fluids, or dilution of approved fluid could result in catastrophic equipment damage.

Non-Trane approved chemicals could react with system components and result in failure. Contact a qualified service technician and your localTrane Parts Center.

Note: The use of incorrect compounds in the drive cooling system may result in scaling, erosion, corrosion or freezing.TheTrane Company warranty specifically excludes liability for corrosion, erosion, freezing or deterioration of Trane equipment.

Proper fluid level is important to the operation of the unit. See “Drive Cooling ExpansionTank,” p. 71 for fluid level check instructions.The circuit capacities are shown in tables above.

If the level is below the recommended minimum levels, contact your localTrane office.

Note: Drive cooling fluid service life is 5 years. See “Drive Cooling System,” p. 71.

RTAE-SVX001B-EN

11

Pre-Installation

Unit Inspection

When unit is delivered, verify it is the correct unit and is properly equipped. Compare information on the unit nameplate with ordering and submittal information. Inspect all exterior components for visible damage. Report any apparent damage or material shortage to carrier and make a “unit damage” notation on carrier’s delivery receipt. Specify extent and type of damage found and notifyTrane Sales Office. Do not proceed with installation of a damaged unit without sales office approval.

Inspection

To protect against loss due to damage in transit, complete the following steps upon receipt of unit.

•Inspect the individual pieces of the shipment before accepting the unit. Check for obvious damage to the unit or packing material.

•Inspect the unit for concealed damage as soon as possible after delivery and before it is stored. Concealed damage must be reported within 15 days.

•If concealed damage is discovered, stop unpacking the shipment. Do not remove damaged material from the receiving location.Take photos of the damage, if possible.The owner must provide reasonable evidence that the damage did not occur after delivery.

•Notify the carrier’s terminal of the damage immediately, by phone and by mail. Request an immediate, joint inspection of the damage with the carrier and the consignee.

NotifyTrane sales representative and arrange for repair. Do not repair unit until damage is inspected by the carrier’s representative.

Storage

Extended storage of outdoor unit prior to installation requires these precautionary measures:

•Store the outdoor unit in a secure area.

•For units that have been charged with refrigerant, verify the following valves are closed on each circuit:

•Suction service valve (butterfly valve)

•Liquid line angle valve or EXV (EXV is driven closed whenever circuit is powered)

•Oil line shutoff valves to brazed plate heat exchangers

Note: Units with factory refrigerant charge (model number digit 15 = 1) are shipped with suction, liquid and oil line shutoff valves closed, isolating most of refrigerant charge in the evaporator. If unit goes directly into long term storage, it is recommended that these valve positions be confirmed.

•For units with nitrogen charge option (model number digit 15 = 2), units are shipped with valves open. If unit goes directly into storage prior to refrigerant charge, confirm all service valves are open.

N2

•At least every three months (quarterly), check the pressure in the refrigerant circuits to verify that the refrigerant charge is intact. If it is not, contact a

qualified service organization and the appropriate Trane sales office.

12	RTAE-SVX001B-EN

Pre-Installation

Installation Requirements

A list of the contractor responsibilities typically associated with the unit installation process is provided in Table 4.

Table 4. Installation requirements

	Trane Supplied	Trane Supplied	Field Supplied
Type	Trane Installed	Field Installed	Field Installed
Foundation			• Meet foundation requirements
			• Safety chains
Rigging			• Clevis connectors
			• Lifting beam
			• Spreader bar
	• Trane, or an agent
	of Trane specifically
Disassembly/Reassembly	authorized to perform
	start-up of Trane®
(as required)(a)
	products (contact
	your local Trane
	office for pricing)
Isolation		• Elastomeric isolators	• Elastomeric isolators (optional)
		(optional)
			• Circuit breakers (optional)
			• Electrical connections to unit mounted starter
			• Wiring sizes per submittal and NEC
	• Circuit breakers		• Terminal lugs
Electrical	(optional)		• Ground connection(s)
	• Unit mounted starter		• BAS wiring (optional)
			• Control voltage wiring
			• Chilled water pump contactor and wiring
			• Option relays and wiring
			• Taps for thermometers and gauges
			• Thermometers
			• Water flow pressure gauges
Water piping	• Flow switch		• Isolation and balancing valves in water piping
			• Vents and drain
			• Waterside pressure relief valves
			• Water strainer
Insulation	• Insulation		• Insulation
Water Piping Connection Components	• Grooved pipe	• Flange kit (optional)
Other Materials	• R-134a refrigerant
	• Dry nitrogen
	(optional)
“Stealth™ RTAE Installation
Completion Check Sheet and Request
for Trane Service”
(RLC-ADF002-EN,
see “Log and Check Sheet,” p. 90)
	• Trane, or an agent of
Chiller Start-up Commissioning(b)	Trane specifically
	authorized to perform
	start-up of Trane®
	products

(a)Trane, or an agent of Trane specifically authorized to perform start-up and warranty of Trane® products, will perform or have direct on-site supervision of the disassembly and reassembly work.

(b)Start-up must be performed by Trane or an agent of Trane specifically authorized to perform start-up and warranty of Trane® products. Contractor shall provide Trane (or an agent of Trane specifically authorized to perform start-up) with notice of the scheduled start-up at least two weeks prior to the scheduled start-up.

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13

Dimensions and Weights

Weights

Table 5. Weights

		Standard Length Unit				Extended Length Unit(a)
Unit Size	Shipping		Operating		Shipping		Operating
(tons)	lbs	kg	lbs	kg	lbs	kg	lbs	kg
			InvisiSound™ Standard or Superior(b)
150S	9436	4280	9596	4353	11013	4995	11173	5068
165S	10451	4741	10611	4813	12011	5448	12171	5521
150	11333	5141	11479	5207	13492	6120	13638	6186
165	12377	5614	12533	5685	14532	6592	14688	6662
180	12698	5760	12880	5843	14853	6737	15035	6820
200	13808	6263	14007	6354	15991	7254	16213	7354
225	15244	6915	15466	7015	17427	7905	17649	8005
250	15622	7086	15861	7195	17805	8076	18044	8185
275	16820	7630	17095	7754	18975	8607	19250	8732
300	17965	8149	18265	8285	20121	9127	20421	9263
				InvisiSound	Ultimate(c)
150S	10236	4643	10396	4716	11813	5358	11973	5431
165S	11251	5103	11411	5176	12811	5811	12971	5884
150	12133	5504	12279	5570	14292	6483	14438	6549
165	13177	5977	13333	6048	15332	6955	15488	7025
180	13498	6123	13680	6205	15653	7100	15835	7183
200	14608	6626	14807	6716	16791	7616	17013	7717
225	16044	7278	16266	7378	18227	8268	18449	8368
250	16422	7449	16661	7557	18605	8439	18844	8548
275	17620	7992	17895	8117	19775	8970	20050	9095
300	18765	8512	19065	8648	20921	9490	21221	9626

(a) Units are extended length if either of the following are selected: Transformer (model number digit 28 = 1)

Harmonic Filtration Option (model number digit 29 = 1)

Units without Harmonic Filtration Option or Transformer (digits 28, 29 = 0X) are standard length. (b)Model number digit 12 = 1 or 2

(c) Model number digit 12 = 3

Unit Dimensions

See unit submittals for specific unit dimensions and water connection locations.

Service Clearances

Figure 5. RTAE service clearances - top view

NO OBSTRUCTIONS ABOVE UNIT

	Control
	Panel	85” (2160mm)
		See note 2
	40”
	(1016	24”
	mm)
		(600.1mm)
	See
	note 1
		36” (914.4mm)
	14

NOTES:

1.A full 40” clearance is required in front of the control panel. Must be measured from front of panel, not end of unit base.

2.Clearance of 85” on the side of the

unit is required for coil replacement. Preferred side for coil replacement is shown (left side of unit, as facing control

panel), however either side is acceptable.

RTAE-SVX001B-EN

Installation Mechanical

Location Requirements

Sound Considerations

•Refer toTrane Engineering Bulletin Chiller Sound Ratings and Installation Guide RLC-PRB035-EN for sound consideration applications.

•Locate the unit away from sound-sensitive areas.

•Install the optional elastomeric isolators under the unit. See “Isolation and Sound Emission,” p. 20.

•Chilled water piping should not be supported by chiller frame.

•Install rubber vibration isolators in all water piping.

•Use flexible electrical conduit.

•Seal all wall penetrations.

Note: Consult an acoustical engineer for critical applications.

Foundation

Provide rigid, non-warping mounting pads or a concrete foundation of sufficient strength and mass to support the applicable operating weight (i.e., including completed piping, and full operating charges of refrigerant, oil and water). See Table 5, p. 14 for unit operating weights. Once in place, the unit must be level within 1/4” (6.4 mm) across the length and width of the unit.TheTrane Company is not responsible for equipment problems resulting from an improperly designed or constructed foundation.

Clearances

Provide enough space around the unit to allow the installation and maintenance personnel unrestricted access to all service points. See submittal drawings for the unit dimensions, to provide sufficient clearance for the opening of control panel doors and unit service. See Figure 5, p. 14 for minimum clearances. In all cases, local codes which require additional clearances will take precedence over these recommendations.

For close spacing information, see RLC-PRB037-EN.

Rigging

WARNING

Improper Unit Lift!

Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level. Failure to properly lift unit could result in unit dropping and possibly crushing operator/technician which could result in death or serious injury and possible equipment or property-only damage.

WARNING

Heavy Objects!

Ensure that all the lifting equipment used is properly rated for the weight of the unit being lifted. Each of the cables (chains or slings), hooks, and shackles used to lift the unit must be capable of supporting the entire weight of the unit. Lifting cables (chains or slings) may not be of the same length. Adjust as necessary for even unit lift. Other lifting arrangements could cause equipment or property damage. Failure to follow instructions above or properly lift unit could result in unit dropping and possibly crushing operator/ technician which could result in death or serious injury.

WARNING

Proper Lifting Configuration Required!

Use only lift locations designated with label shown in Figure 6. Do NOT use locations marked with label shown in Figure 7. Use unit lifting configurations as shown in Table 6 and Figure 8, p. 16 thru Figure 10,

p. 17. Other lifting arrangements could result in death, serious injury or equipment damage.

Figure 6. Label - lift location

X39003897001A

Figure 7. Label - do not lift

X39003894001A

Important:

•Do not fork lift unit.

•See unit nameplate and/or unit submittal for total shipping weight.

•See Table 6 and Figure 8 thru Figure 10 for unit lifting configuration.

•See Table 7, p. 18 and Table 8, p. 19 for lift weights and dimensions at each lifting point locations.

•See Table 9, p. 20 for center of gravity information.

RTAE-SVX001B-EN

15

Installation Mechanical

	Table 6.		Lifting configuration selection
			Tons	Unit Length(a)	Lift Configuration	See
			150S, 165S, 150	Standard and Extended	4-point	Figure 8, p. 16
	165, 180, 200, 225, 250			Standard
	165, 180, 200, 225, 250			Extended	6-point	Figure 9, p. 17
			275	Standard
			275	Extended	8-point	Figure 10, p. 17
			300	Standard and Extended

(a) Units are extended length if either of the following are selected: Transformer (model number digit 28 = 1)

Harmonic Filtration Option (model number digit 29 = 1)

Units without Harmonic Filtration Option or Transformer (digits 28, 29 = 0X) are standard length.

Figure 8. 4-point lift configuration

96” (2438mm) Spreader Bar

Lifting Location 2

(Lifting location 3

located on other side of unit)

Control Panel

Lifting Location 1

(Lifting location 4

located on other side of unit)

16	RTAE-SVX001B-EN

Installation Mechanical

Figure 9. 6-point lift configuration

96” (2438mm) Spreader Bar

96”

(2438mm) Spreader Bar

Control Panel

Lifting Location 3 (Lifting location 4 located on other side of unit)

Lifting Location 2 (Lifting location 5

located on other side of unit)

Lifting Location 1 (Lifting location 6

located on other side of unit)

Figure 10. 8-point lift configuration

96” (2438mm) Spreader Bar

Qty 2

Lifting Location 4 (Lifting location 5 located on other side of unit)

Lifting Location 3 (Lifting location 6

located on other side of unit)

Lifting Location 2 (Lifting location 5

located on other side of unit)

Control Panel

Lifting Location 1 (Lifting location 8 located on other side of unit)

RTAE-SVX001B-EN

17

Installation Mechanical

Table 7.		Lift weights by location
									Location
			1		2		3		4		5		6		7		8
	Tons	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg
								Standard Length Unit
	150S	2540	1152	2451	1112	2164	981	2281	1034	-	-	-	-	-	-	-	-
	165S	2656	1205	2352	1067	2730	1238	2713	1230	-	-	-	-	-	-	-	-
150		3426	1554	2638	1197	2234	1014	3035	1377	-	-	-	-	-	-	-	-
165		3452	1566	2876	1304	2810	1275	3239	1469	-	-	-	-	-	-	-	-
180		3528	1600	2941	1334	2896	1314	3333	1512	-	-	-	-	-	-	-	-
200		3586	1627	3325	1508	3316	1504	3581	1624	-	-	-	-	-	-	-	-
225		4003	1816	3551	1611	3617	1641	4073	1847	-	-	-	-	-	-	-	-
250		4098	1859	3637	1650	3711	1683	4176	1894	-	-	-	-	-	-	-	-
275		2484	1127	1943	881	3683	1671	3829	1737	2255	1023	2625	1191	-	-	-	-
300		2061	935	2289	1038	2515	1141	1682	763	2729	1238	3008	1364	1737	788	1943	881
								Extended Length Unit(a)
	150S	2698	1224	2597	1178	2837	1287	2881	1307	-	-	-	-	-	-	-	-
	165S	2988	1356	2841	1289	3135	1422	3047	1382	-	-	-	-	-	-	-	-
150		3825	1735	3363	1525	2920	1324	3384	1535	-	-	-	-	-	-	-	-
165		2653	1203	2629	1192	2570	1166	1959	889	2046	928	2675	1213	-	-	-	-
180		2685	1218	2674	1213	2641	1198	1946	883	2100	953	2807	1273	-	-	-	-
200		2919	1324	2640	1198	2797	1269	2846	1291	2274	1032	2514	1141	-	-	-	-
225		3065	1391	2705	1227	3237	1468	3144	1426	2406	1091	2870	1302	-	-	-	-
250		3117	1414	2749	1247	3322	1507	3229	1465	2458	1115	2930	1329	-	-	-	-
275		2145	973	2668	1210	3279	1487	1513	686	2412	1094	2482	1126	1644	746	2831	1284
300		2056	933	2440	1107	3452	1566	2241	1017	3089	1401	2993	1358	1460	662	2389	1084

(a) Units are extended length if either of the following are selected: Low Harmonic Distortion Option (model number digit 29 = 1) Autotransformer (model number digit 28 = 1 or 2)

Units without Low Harmonic Distortion Option or Autotransformer (digits 28, 29 = X0) are standard length.

18	RTAE-SVX001B-EN

Installation Mechanical

Table 8.			Lifting locations (from control panel end of frame)
										Location
				1				3		4			5			6			7			8
					2
	Tons		in	mm	in	mm	in	mm	in	mm		in	mm		in	mm		in	mm		in	mm
									Standard Length Unit
	150S		45.5	1156	45.5	1156	153.9	3909	153.9	3909		-	-		-	-		-	-		-	-
	165S		23.5	596	23.5	596	189.7	4818	189.7	4818		-	-		-	-		-	-		-	-
150			39.6	1006	39.6	1006	171.4	4353	171.4	4353		-	-	-		-	-		-	-		-
165			60.4	1534	60.4	1534	224.6	5705	224.6	5705		-	-	-		-	-		-	-		-
180			60.4	1534	60.4	1534	224.6	5705	224.6	5705		-	-	-		-	-		-	-		-
200			53.3	1355	53.3	1355	258.7	6570	258.7	6570			-		-	-		-	-		-	-
												-
225			53.3	1355	53.3	1355	258.7	6570	258.7	6570		-	-	-		-	-		-	-		-
250			53.3	1355	53.3	1355	258.7	6570	258.7	6570		-	-	-		-	-		-	-		-
275			75.8	1926	75.8	1926	190.7	4845	190.7	4845		311.9	7922	311.9		7922	-		-	-		-
300			47.6	1210	47.6	1210	171.3	4350	171.3	4350		242.8	6168	242.8		6168	365.1		9274	365.1		9274
									Extended Length Unit(a)
	150S		23.5	596	23.5	596	207.1	5261	207.1	5261		-	-		-	-		-	-		-	-
	165S		23.5	596	23.5	596	242.9	6170	242.9	6170		-	-		-	-		-	-		-	-
150			44.7	1136	44.7	1136	224.6	5705	224.6	5705		-	-		-	-		-	-		-	-
165			61.1	1552	61.1	1552	171.3	4350	171.3	4350		277.8	7057	277.8		7057	-		-	-		-
180			61.1	1552	61.1	1552	171.3	4350	171.3	4350		277.8	7057	277.8		7057	-		-	-		-
200			47.6	1210	47.6	1210	190.7	4845	190.7	4845		311.9	7922	311.9		7922			-		-	-
																		-
225			47.6	1210	47.6	1210	190.7	4845	190.7	4845		311.9	7922	311.9		7922	-		-	-		-
250			47.6	1210	47.6	1210	190.7	4845	190.7	4845		311.9	7922	311.9		7922	-		-	-		-
275			75.8	1926	75.8	1926	182.0	4623	182.0	4623		258.5	6565	258.5		6565	365.1		9274	365.1		9274
300			47.6	1210	47.6	1210	168.5	4280	168.5	4280		296.1	7520	296.1		7520	418.3		10626	418.3		10626

(a) Units are extended length if either of the following are selected: Low Harmonic Distortion Option (model number digit 29 = 1) Autotransformer (model number digit 28 = 1 or 2)

Units without Low Harmonic Distortion Option or Autotransformer (digits 28, 29 = X0) are standard length.

RTAE-SVX001B-EN

19

Installation Mechanical

Center of Gravity

Figure 11. Center of gravity

CG

X

SIDE VIEW

CG

Z

Y

END VIEW

(Non-Control Panel End)

Table 9.		Centers of gravity
		CGx			CGy		CGz
	Tons	in	mm	in	mm	in	mm
			Standard Length Unit
	150S	96.6	2454	43.8	1112	40.4	1025
	165S	110.0	2793	45.2	1149	42.8	1087
150		105.5	2679	43.9	1115	37.5	953
165		142.4	3617	43.9	1115	39.7	1008
180		142.8	3628	43.9	1115	39.4	1002
200		155.5	3951	43.9	1115	41.2	1047
225		156.1	3964	43.9	1115	39.8	1011
250		156.4	3973	43.9	1115	39.7	1008
275		194.1	4930	43.9	1115	41.1	1043
300		207.1	5260	43.9	1115	42.4	1076
			Extended Length Unit(a)
	150S	118.8	3017	44.1	1121	37.2	944
	165S	136.4	3464	44.7	1137	39.4	1002
150		134.7	3421	43.9	1115	33.3	846
165		169.1	4295	43.9	1115	35.4	898
180		169.9	4314	43.9	1115	35.2	894
200		181.6	4613	43.9	1115	36.9	937
225		183.6	4665	43.9	1115	36.0	915
250		184.2	4680	43.9	1115	36.0	913
275		220.2	5594	43.9	1115	37.4	950
300		232.3	5900	43.9	1115	38.7	984

(a) Units are extended length if either of the following are selected: Low Harmonic Distortion Option (model number digit 29 = 1) Autotransformer (model number digit 28 = 1 or 2)

UnitswithoutLowHarmonicDistortionOptionorAutotransformer(digits 28, 29 = X0) are standard length.

Isolation and Sound Emission

The most effective form of isolation is to locate the unit away from any sound sensitive area. Structurally transmitted sound can be reduced by elastomeric vibration eliminators. Spring isolators are not recommended. Consult an acoustical engineer in critical sound applications.

For maximum isolation effect, isolate water lines and electrical conduit. Wall sleeves and rubber isolated piping hangers can be used to reduce the sound transmitted through water piping.To reduce the sound transmitted through electrical conduit, use flexible electrical conduit.

State and local codes on sound emissions should always be considered. Since the environment in which a sound source is located affects sound pressure, unit placement must be carefully evaluated. Sound power levels for Stealth chillers are available on request.

Unit Isolation and Leveling

For additional reduction of sound and vibration, install the optional elastomeric isolators.

Construct an isolated concrete pad for the unit or provide concrete footings at the unit mounting points. Mount the unit directly to the concrete pads or footings.

Level the unit using the base rail as a reference.The unit must be level within 1/4-in (6 mm) over the entire length and width. Use shims as necessary to level the unit.

Elastomeric Isolators

(Optional for units without seismic rating)

Note: See unit submittal, or Table 11, p. 21 thru Table 13, p. 23 for point weights, isolator location and isolator selections.

1.Secure the isolators to the mounting surface using the mounting slots in the isolator base plate. Do not fully tighten the isolator mounting bolts at this time.

2.Align the mounting holes in the base of the unit with the threaded positioning pins on the top of the isolators.

3.Lower the unit onto the isolators and secure the isolator to the unit with a nut.

4.Level the unit carefully. Fully tighten the isolator mounting bolts.

20	RTAE-SVX001B-EN

5.

Figure 12. Elastomeric isolator

5.0 in

1/2 - 13NC - 2B

4.63 in

0.56 in

0.50 in

1.60 ± .25 in

Mounting molded in neoprene

3.0 in

2.75 in

0.38 in

Max Load		Maximum
(lbs)	Color	Deflection (in)	Type
2250	RED	0.50	RDP-4
3000	GREEN	0.50	RDP-4

Installation Mechanical

Elastomeric Isolation Pads for Seismic Option

Elastomeric pads ship inside the unit control panel.They are provided with an isolation washer and 3/4” free hole in the center of the plate.

Figure 13. Seismic isolation pad — installed

Table 10. Seismically rated elastomeric isolation pad

		Dimension (in)
Model	Max Load	Length	Width	Height
B-36	2520	6	6	.625

Figure 14. Mounting point locations(a)

2	4	6	8	10
Control panel
1	3	5	7	9

(a)Quantity of isolators varies with unit. Shorter units will not use locations 5 and 6. See submittal for actual number required for specific unit.

Table 11. Point weights

										Location
		1		2		3		4		5		6		7		8		9		10
Tons	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg		lb	kg
									Standard Length
150S	1731	785	1664	755	1834	832	1773	804	1219	553	1375	624	-	-	-	-	-	-		-	-
165S	1666	756	1559	707	1886	855	1870	848	1914	868	1716	778	-	-	-	-	-	-		-	-
150	1452	659	1543	700	1326	602	1446	656	1464	664	1350	612	1490	676	1262	572	-	-		-	-
165	1539	698	1341	608	1622	736	1553	704	1657	752	1607	729	1522	690	1536	697	-	-		-	-
180	1536	697	1338	607	1676	760	1620	735	1709	775	1659	753	1579	716	1581	717	-	-		-	-
200	1442	654	1764	800	1696	769	1810	821	1836	833	1694	768	1986	901	1580	717	-	-		-	-
225	1430	649	1792	813	1999	907	2058	933	2111	958	1994	905	2139	970	1721	781	-	-		-	-
250	1426	647	1803	818	2064	936	2144	973	2182	990	2055	932	2195	996	1753	795	-	-		-	-
275	1624	737	1627	738	1802	817	1746	792	1795	814	1530	694	1653	750	1831	830	1577	715		1634	741
300	1634	741	1850	839	1871	849	1925	873	1898	861	1938	879	1887	856	1695	769	1752	795		1515	687

RTAE-SVX001B-EN

21

Installation Mechanical

Table 11.			Point weights (continued)
													Location
				1		2		3		4		5		6		7		8		9		10
	Tons	lb		kg	lb	kg		lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg	lb	kg
											Extended Length Unit(a)
	150S	1553		704	1795	814		1974	895	1959	889	2088	947	1804	818	-	-	-	-	-	-	-	-
	165S	1344		610	1236	561		1537	697	1494	678	1686	765	1668	757	1636	742	1570	712	-	-	-	-
150		1563		709	1621	735		1705	773	1875	850	1952	885	1575	714	1601	726	1601	726	-	-	-	-
165		1776		806	1827	829		1956	887	1925	873	2058	933	1958	888	1517	688	1515	687	-	-	-	-
180		1774		805	1822	827		1990	903	1975	896	2128	965	2030	921	1577	715	1557	706	-	-	-	-
200		1706		774	1524	691		1662	754	1294	587	1938	879	1738	788	1267	575	1753	795	1457	661	1652	749
225		1857		842	1669	757		1844	836	1412	640	2156	978	1860	844	1378	625	1985	900	1501	681	1766	801
250		1852		840	1664	755		1885	855	1439	653	2219	1006	1936	878	1438	652	2046	928	1530	694	1795	814
275		1874		850	1860	844		1626	737	1700	771	2204	1000	2101	953	2017	915	2131	967	1820	826	1642	745
300		1946		883	1826	828		1854	841	1795	814	2143	972	2106	955	2408	1092	2338	1060	1808	820	1898	861
	(a) Units are extended length if either of the following are selected:
		Low Harmonic Distortion Option (model number digit 29 = 1)
		Autotransformer (model number digit 28 = 1 or 2)
	Units without Low Harmonic Distortion Option or Autotransformer (digits 28, 29 = X0) are standard length.
Table 12.			Isolator locations(a)
													Location
				1		2		3
										4		5		6		7		8		9		10
	Tons	in		mm	in	mm		in	mm	in	mm	in	mm	in	mm	in	mm	in	mm	in	mm	in	mm
													Standard Length
	150S	23.6		600	27.6	700		102.4	2600	94.5	2400	187.0	4750	187.0	4750	-	-	-	-	-	-	-	-
	165S	15.7		400	23.0	585		98.4	2500	102.2	2595	196.9	5000	204.7	5200	-	-	-	-	-	-	-	-
150		24.4		620	11.8	300		47.2	1200	82.7	2100	100.4	2550	153.5	3900	188.2	4780	188.2	4780	-	-	-	-
165		17.7		450	23.0	585		98.6	2505	102.2	2595	155.5	3950	190.6	4840	242.1	6150	242.9	6170	-	-	-	-
180		17.7		450	23.0	585		98.6	2505	102.2	2595	155.5	3950	190.6	4840	242.1	6150	242.9	6170	-	-	-	-
200		23.6		600	23.6	600		102.4	2600	137.8	3500	155.5	3950	198.8	5050	255.9	6500	263.8	6700	-	-	-	-
225		23.6		600	23.6	600		102.4	2600	137.8	3500	155.5	3950	198.8	5050	255.9	6500	263.8	6700	-	-	-	-
250		23.6		600	23.6	600		102.4	2600	137.8	3500	155.5	3950	198.8	5050	255.9	6500	263.8	6700	-	-	-	-
275		21.7		550	18.9	480		141.3	3590	125.2	3180	196.1	4980	236.2	6000	236.2	6000	259.8	6598	328.0	8330	324.4	8240
300		19.7		500	27.6	700		143.1	3634	143.1	3634	202.4	5142	235.6	5984	257.9	6551	296.6	7534	347.8	8834	339.5	8624
												Extended Length Unit(b)
	150S	19.7		500	15.7	400		102.4	2600	133.9	3400	204.7	5200	208.7	5300	-	-	-	-	-	-	-	-
	165S	23.6		600	23.6	600		86.6	2200	78.7	2000	149.6	3800	157.5	4000	259.8	6600	259.8	6600	-	-	-	-
150		25.0		635	23.6	600		84.6	2150	98.4	2500	147.6	3750	190.9	4850	240.2	6100	240.2	6100	-	-	-	-
165		19.7		500	19.7	500		129.9	3300	129.9	3300	204.7	5200	234.3	5950	293.3	7450	299.2	7600	-	-	-	-
180		19.7		500	19.7	500		129.9	3300	129.9	3300	204.7	5200	234.3	5950	293.3	7450	299.2	7600	-	-	-	-
200		25.6		650	19.7	500		118.1	3000	98.4	2500	208.7	5300	196.9	5000	255.9	6500	255.9	6500	315.0	8000	315.0	8000
225		25.6		650	19.7	500		118.1	3000	98.4	2500	208.7	5300	196.9	5000	255.9	6500	255.9	6500	315.0	8000	315.0	8000
250		25.6		650	19.7	500		118.1	3000	98.4	2500	208.7	5300	196.9	5000	255.9	6500	255.9	6500	315.0	8000	315.0	8000
275		6.3		160	9.8	250		177.2	4500	139.8	3550	198.8	5050	242.1	6150	309.1	7850	313.0	7950	354.3	9000	370.1	9400
300		9.8		250	9.8	250		177.2	4500	139.8	3550	206.7	5250	242.1	6150	311.8	7920	313.4	7960	393.7 10000		393.7 10000

(a) Dimensions are referenced from end of frame on the control panel side. (b)Units are extended length if either of the following are selected:

Low Harmonic Distortion Option (model number digit 29 = 1) Autotransformer (model number digit 28 = 1 or 2)

Units without Low Harmonic Distortion Option or Autotransformer (digits 28, 29 = X0) are standard length.

22	RTAE-SVX001B-EN

Installation Mechanical

Table 13.

Isolator selections

Location

Tons

1

3

4

5

6

7

8

9

10

2

Standard Length Unit

150S

Red 62

Red 62

Red 62

Red 62

Red 62

Red 62

-

-

-

-

165S

Red 62

Red 62

Red 62

Red 62

Red 62

Red 62

-

-

-

-

150

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

165

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

180

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

200

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

225

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

250

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

275

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

300

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

Extended Length Unit(a)

150S

Red 62

Red 62

Green 63

Green 63

Green 63

Red 62

-

-

-

-

165S

Red 62

Red 62

Red 62

Red 62

Red 62

Red 62

Red 62

Red 62

-

-

150

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

165

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

180

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

-

-

200

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

225

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

250

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

275

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

300

Red 62

Red 62

Green 63

Green 63

Green 63

Green 63

Green 63

Green 63

Red 62

Red 62

(a) Units are extended length if either of the following are selected: Low Harmonic Distortion Option (model number digit 29 = 1) Autotransformer (model number digit 28 = 1 or 2)

Units without Low Harmonic Distortion Option or Autotransformer (digits 28, 29 = X0) are standard length.

Compressor Shipping Bolt Removal

Units with InvisiSound™ Ultimate Option (Model Number Digit 12 = 3)

For chillers built with InvisiSound Ultimate option, compressor shipping bolts must be removed to assure minimum noise during operation. Use a 24mm socket to remove the (3) M15 x 75mm shipping bolts for each compressor.They are located under compressor mounting feet. See Figure 15.

Important:

•DO NOT DISCARD SHIPPING BOLTS. Store bolts in the control panel for future use.

•All shipping bolts MUST be reinstalled prior to compressor removal or unit move.

NOTICE:

Equipment Damage!

Do not remove compressor or move unit without reattaching compressor shipping bolts. Failure to reinstall bolts could cause shifting of parts and result in equipment damage.

Figure 15. Compressor shipping bolt removal

Isolator
	Compressor
Compressor
Mounting
Foot	Shipping Bolt

Drainage

Locate the unit near a large capacity drain for water vessel drain-down during shutdown or repair. Evaporators are provided with drain connections. A vent on top of evaporator waterbox prevents vacuum by allowing air into evaporator for complete drainage. All local and national codes apply.

RTAE-SVX001B-EN

23

Installation Mechanical

Evaporator Piping

RTAE units are available with 2 or 3 pass configurations. See Figure 16.

Figure 16. Evaporator pass configurations

2-Pass Evaporators

Control Panel End

Top View (Condenser removed for clarity)

Inlet Water

Connection

	Outlet Water	Outlet	Inlet
	Connection
			End View

(Non-control panel end)

3-Pass Evaporators

Outlet Waterbox

Control Panel End

Inlet Waterbox (Outlet waterbox opposite end)

	Top View		End View
		Inlet Waterbox	(Non-control panel end)
	(Condenser removed for clarity)

NOTICE:

Proper Water Treatment!

The use of untreated or improperly treated water could result in scaling, 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.

NOTICE:

Evaporator Damage!

The chilled water connections to the evaporator are to be “victaulic” type connections. Do not attempt to weld these connections, as the heat generated from welding can cause microscopic and macroscopic fractures on the cast iron waterboxes that can lead to premature failure of the waterbox. To prevent damage to chilled water components, do not allow evaporator pressure (maximum working pressure) to exceed 150 psig (10.5 bar).

Evaporator water connections are grooved.

Thoroughly flush all water piping to the unit before making the final piping connections to the unit.

Components and layout will vary slightly, depending on the location of connections and the water source.

A vent is provided on the top of the evaporator at the chilled water inlet. Be sure to provide additional vents at high points in the piping to bleed air from the chilled water system. Install necessary pressure gauges to monitor the entering and leaving chilled water pressures.

Provide shutoff valves in lines to the gauges to isolate them from the system when they are not in use. Use rubber vibration eliminators to prevent vibration transmission through the water lines.

If desired, install thermometers in the lines to monitor entering and leaving water temperatures. Install a balancing valve in the leaving water line to control water flow balance. Install shutoff valves on both the entering and leaving water lines so that the evaporator can be isolated for service

24	RTAE-SVX001B-EN

							Installation Mechanical
Evaporator Piping Components						operating safety. SeeThese components and their general
Piping components include all devices and controls used						locations are given below.
to provide proper water system operation and unit
Figure 17. Typical Stealth™ water piping
	6	4
	5
	8		B		7	3	2
							A
			2
							1
							A
			2	8	C		2
						3
							A
Table 14. Water piping components
Item	Description				Item	Description
1	Bypass Valve				Pi	Pressure Gauge
2	Isolation Valve				FT	Water Flow Switch
3	Vibration Eliminator				T1	Evap Water Inlet Temp Sensor
4	Evaporator - End View (2-pass)				T2	Evap Water Outlet Temp Sensor
5	Evaporator Waterbox (2-pass)						NOTES
6	Vent				A	Isolate unit for initial water loop cleaning
7	Strainer				B	Vent must be installed at the high point of the line
8	Drain				C	Drain must be installed at the low point of the line

Entering Chilled Water Piping

•Air vents (to bleed air from system).

•Water pressure gauges with shutoff valves.

•Vibration eliminators.

•Shutoff (isolation) valves.Thermometers (if desired).

•Clean-out tees.

•Pipe strainer.

Leaving Chilled Water Piping

•Air vents (to bleed air from system).

•Water pressure gauges with shutoff valves.

•Vibration eliminators.

•Shutoff (isolation) valves.

•Thermometers.

•Clean-out tees.

•Balancing valve.

Drains

A 1/2” drain connection is located under outlet end of evaporator waterbox for drainage during unit servicing. A shutoff valve must be installed on drain line.

Pressure Gauges

Install field-supplied pressure components as shown in Figure 17, p. 25. Locate pressure gauges or taps in a straight run of pipe; avoid placement near elbows, etc. Be sure to install the gauges at the same elevation on each shell if the shells have opposite-end water connections.

To read manifolded pressure gauges, open one valve and close the other (depending upon the reading desired).This eliminates errors resulting from differently calibrated gauges installed at unmatched elevations.

RTAE-SVX001B-EN

25

Installation Mechanical

Pressure Relief Valves

NOTICE:

Evaporator Damage!

To prevent shell damage, install pressure relief valves in the evaporator water system.

Indexing Flow Switch

To properly index the flow switch, the following requirements must be met:

•The dot must be at a position no greater than 90° off Index.

•The torque must be between 22 ft-lb minimum and 74 ft-lb maximum.

Install a water pressure relief valve in the evaporator inlet piping between the evaporator and the inlet shutoff valve, as shown in Figure 17, p. 25. Water vessels with closecoupled shutoff valves have a high potential for hydrostatic pressure buildup on a water temperature increase. Refer to applicable codes for relief valve installation guidelines.

Evaporator Flow Switch

NOTICE:

Equipment Damage!

Flow switch is on a 24V circuit. Do NOT apply 120V to the flow switch. Incorrect voltage application could cause damage to the flow switch.

The flow switch is factory-installed and programmed based on the operating conditions submitted with the order.The leaving evaporator temperature, fluid type and fluid concentration affect the selected flow switch. If the operating conditions on the job site change, the flow switch may need to be replaced. Contact your localTrane Sales office for more information.

The sensor head includes 3 LEDs, two yellow and one green.Wait 15 seconds after power is applied to the sensor before evaluating LEDs for flow status. When wired correctly and flow is established, only the green LED should be lit. Following are the LED indicators:

•A minimum distance of 5x pipe diameter must be maintained between flow switch and any bends, valves, changes in cross sections, etc.

Figure 18. Proper flow switch indexing

Top View

Flow

Index

The flow switch must have the dot

in the shaded area to the left of this line for proper indexing (±90° off Index)

•Green ON, both yellow OFF — Flow

•Green and outside yellow ON — No Flow

•Center yellow ON continuously — Miswire

Factory installed jumper wire W11 must be removed if using auxiliary contacts and/or additional proof of flow. See schematics in RTAE-SVE01*-EN for more details.

NOTICE:

Equipment Damage!

Incorrect wiring of auxiliary contacts could cause equipment damage.

If using auxiliary flow sensing, both yellow LEDs come on initially when flow is stopped.The center yellow LED will turn off after approximately 7 seconds.The LED indicators are otherwise the same as indicated above.

26	RTAE-SVX001B-EN

Installation Mechanical

Evaporator Waterside Pressure Drop Curves

Figure 19. Evaporator waterside pressure drop curve — 2-pass

	50	300T
	47.5
	45	275T
	42.5	250T
	40	225T
	37.5	200T
	35
H2O)
	32.5	185T
	30	165T
(ft.
	27.5
Drop		150T
	25
Pressure		150S,
	22.5
		165S
	20
	17.5
	15
	12.5
	10
	7.5
	5
	2.5
	0
	0	200	400	600	800	1000	1200	1400

Water Flow (GPM)

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Installation Mechanical

Figure 20. Evaporator waterside pressure drop curve — 3-pass
	75	300T
	70	275T
	65	250T
	60	225T
	55	200T
H2O)	50	185T
	45	165T
(ft.
Drop	40	150T
		150S,
Pressure	35
		165S
	30
	25
	20
	15
	10
	5
	0
	0	100	200	300	400	500	600	700	800	900	1000

Water Flow (GPM)

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Installation Mechanical

Freeze Protection

One or more of the ambient freeze avoidance methods in Table 15 must be used to protect the Stealth chiller from ambient freeze damage.

Table 15. RTAC freeze avoidance methods

	Protects to
Method	ambient
	temperature	Notes
		• Heaters alone will provide low ambient protection down to -20°F (-29°C), but will NOT
		protect the evaporator from freezing as a result of charge migration. Therefore, it is
		required that water pump control be used in conjunction with heaters.
		• Heaters are factory-installed on the evaporator and water piping and will protect them from freezing
		• Install heat tape on all water piping, pumps, and other components that may be damaged if exposed
		to freezing temperatures. Heat tape must be designed for low ambient temperature applications. Heat
		tape selection should be based on the lowest expected ambient temperature.
		• Tracer™ UC800 controller can start the pump when freezing conditions are detected. For this option
		the pump must to be controlled by the Stealth unit and this function must be validated.
		• Water circuit valves need to stay open at all times.
		• Water pump control and heater combination will protect the evaporator down to any
Water Pump Control	Down to -20°F	ambient temperature provided power is available to the pump and the controller. This
AND Heaters		option will NOT protect the evaporator in the event of a power failure to the chiller unless
		backup power is supplied to the necessary components.
		• When no chiller operation is possible and the pump is already off, UC800 pump control for freeze
		protection will command the pump to turn:
		ON if average of the evaporator entering water temperature, the evaporator leaving water
		temperature, and the evaporator refrigerant pool temperature is less than Low Evaporator Refrigerant
		Temperature Cutout (LERTC) + 4°F for a period of time.
		OFF again if the evaporator refrigerant pool temperature rises above the LERTC + 6°F for a period
		of time.
		Note: Time period referenced for ON and Off conditions above is dependent on past running conditions
		and present temperatures measured.
		ON if entering OR leaving water temperature< LWTC for 30°F-sec (17°C-sec)
		OFF again if water temperature > LWTC for 30 min
	Varies.	• Freeze protection can be accomplished by adding sufficient glycol to protect against freezing below
	See “Low	the lowest ambient expected.
	Evaporator	• Use of glycol type antifreeze reduces the cooling capacity of the unit and must be
Freeze Inhibitor	Refrigerant Cutout,	considered in the design of the system specifications.
	Glycol
	Requirements,”
	p. 30
		• Shut off the power supply to the unit and to all heaters.
Drain Water Circuit	Below -20°F	• Purge the water circuit.
		• Blow out the evaporator to ensure no liquid is left in the evaporator.

NOTICE:

Evaporator Damage!

If insufficient concentration or no glycol is used, the evaporator water flow must be controlled by the UC800 AND heaters must be used to avoid catastrophic damage to the evaporator due to freezing. It is the responsibility of the installing contractor and/or the customer to ensure that a pump will start when called upon by the chiller controls. Refer to RLC-PRB012-EN. Even with water pump control, a power loss of as little as 15 minutes under freezing conditions can damage the evaporator. Only the proper addition of freeze inhibitor or complete drainage of the water circuit can ensure no evaporator damage in the event of a power failure.

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