Trane Stealth RTAE User manual

Stealth™ Model RTAE Chillers
Field Replacement of GP4 Classic
Compressor
Installation Instructions
April 2022 PART-SVN237B-EN
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.

©2022 Trane PART-SVN237B-EN
Introduction
Read this manual thoroughly before operating or
servicing this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required.Yourpersonalsafetyandtheproperoperationof
this machine depend upon the strict observance of these
precautions.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTIONsIndicates 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.
NOTICE Indicatesasituationthatcouldresultin
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, 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 and HCFCs such as saturated or unsaturated HFCs
and HCFCs.
Important 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 according to local rules. For
the USA, the Federal Clean Air Act (Section 608) sets forth
therequirementsforhandling,reclaiming,recoveringand
recycling of certain refrigerants and the equipment that is
usedin theseservice procedures. Inaddition, somestates
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
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/state/national electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being undertaken
could result in death or serious injury. Technicians, in
order to protect themselves from potential electrical,
mechanical, and chemical hazards, MUST follow
precautions in this manual and on the tags, stickers,
and labels, as well as the instructions below:
• 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 Safety Data Sheets
(SDS) and OSHA guidelines for proper PPE.
• When working with or around hazardous chemicals,
ALWAYS refer to the appropriate SDS and OSHA/
GHS (Global Harmonized System of Classification
and Labeling 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.

WARNING
Follow EHS Policies!
Failure to follow instructions below could result in
death or serious injury.
• All Trane personnel must follow the company’s
Environmental, Health and Safety (EHS) policies
when performing work such as hot work, electrical,
fall protection, lockout/tagout, refrigerant handling,
etc. Where local regulations are more stringent than
these policies, those regulations supersede these
policies.
• Non-Trane personnel should always follow local
regulations.
Introduction
PART-SVN237B-EN 3
Copyright
Thisdocumentandtheinformationinitarethepropertyof
Trane, and may not be used or reproduced in whole or in
part without written permission. Trane reserves the right
torevisethispublicationatanytime,andtomakechanges
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
• Updated General Information chapter.
• Updated Additional Parts Required, Removal of
Output Inductors (1st Gen GP4 Classic Compressor
Only), Reprogramming AFD3 sections in Installation
chapter.

4PART-SVN237B-EN
Table of Contents
General Information . . . . . . . . . . . . . . . . . . . . . 5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Compressor Replacement . . . . . . . . . . . . . . 6
Additional Parts Required . . . . . . . . . . . . . . . 6
GP4 Classic Compressor Parts List . . . . . . 7
Heater Information . . . . . . . . . . . . . . . . . . . . . 8
Compressor Heaters . . . . . . . . . . . . . . . . . 8
Removal of Output Inductors (1st Gen GP4
Classic Compressor Only) . . . . . . . . . . . . . . 9
Adding Common Mode Chokes (1st Gen GP4
Classic Compressor Only) . . . . . . . . . . . . . 13
Reprogramming AFD3 . . . . . . . . . . . . . . . . 14
ParameterUpdateRequiredfor1st Generation
Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Installation Procedure . . . . . . . . . . . . . . . . . 15

PART-SVN237B-EN 5
General Information
InitialproductionRTAEChillersinclude1stGenGP4Screw
Compressorswithlegacymotors(PhaseMotion),external
inductors between the drive and compressor, and (on
some units) smaller AFD3 frames compared to second
generation chillers. While 2nd Gen GP4 Screw
Compressors include an updated motor (Regal Beloit), no
external inductors, and (on some units) larger AFD3
frames.
Table 1. GP4 classic compressor
Description 1st Gen GP4 Classic Compressor 2nd Gen GP4 Classic Compressor
Motor Phase Motion Regal Beloit
External Inductor Yes No
AFD3 Frame Size Smaller on some units Larger on Some units
With Trane's conversion to the GP4 Variable VI ratio
(VarVI) compressor architecture, in the event of a
compressor failure it is not possible to replace 1st or 2nd
Gen GP4 Classic Compressors with the new GP4 VarVi
model. Thus, a service model GP4 VarVi Compressor was
developed for replacement of both 1st and 2nd Gen GP4
Classic Compressors. This service model compressor
performssimilarly asa classicGP4 compressordue tothe
following adaptations:
• LockedVIassemblyto'highVI'configuration(sameas
GP4 Classic).
•2
nd generation motor (Regal Beloit instead of Phase
Motion).
• Removal of external inductors (if installed).
Replacement of a 2nd Gen GP4 Classic Compressor
requires replacement of the compressor motor terminal
box but no other adaptations to unit electrical wiring or
AFD3 programming. Replacement of the 1st Gen GP4
Classic Compressor requires extra steps to replicate
similar unit operation. This document outlines extra
retrofit conversion steps in event of a failure of a 1st Gen
GP4 Classic Compressor on an RTAE Chiller:
• Replacement of 1st Gen GP4 Classic Compressor to
GP4 Locked VarVI Service Compressor.
• Removal of external inductors.
• Re-programming of AFD3 (including special RLA
values for some models).
• Addition of common mode chokes.
• Replacement of the compressor motor terminal box.
Note: Some units will lose a small portion of top end
operational capacitydue tothedifferencein motor
performance andthe sizeof theoriginallyinstalled
AFD3 on the 1st Gen RTAE unit. The reduction of
top end capacity is small, and noted later in this
document.
Figure 1. Replacement of 1st or 2nd Gen GP4 classic
compressor to VarVi service compressor on
RTAE
1st Gen
GP4 Comp
2nd Gen
GP4 Comp
New Terminal Box
A new cartridge heater
is required
GP4 VarVi
Service Comp
New Terminal Box
Remove inductor
AFD3 re-programming
Add chokes
A new cartridge heater
is required

6PART-SVN237B-EN
Installation
Compressor Replacement
If either a 1st Gen or 2nd Gen GP4 Classic Compressor has
failed on an RTAE Chiller, only the Locked VarVi Service
Compressor can be used as a replacement, as the Classic
chassis has been discontinued. Motor information for a
specific compressor can be obtained by checking the
model number on the compressor nameplate. Motor
number (MN) is stored in the 6th and 7th digit of the
compressor model number.
Example: Compressor model CHHSRB1A1A0 indicates a
B1motor,whichisa100TStandardLift1stGenGP4Classic
motor. Refer to RTAE Service Guide (RTAE-SVG001*-EN)
for more detailed instructions for compressor
replacement procedure.
Notes:
•Piping and fitting modifications may be required.
•All units will require field installed insulation. Install
insulation before adding refrigerant for proper
adhesion.
Table 2. GP4 compressor cross-list for RTAE chiller
GP4 Screw Compressors
1st Gen GP4 Classic
(Phase Motion Motor)
2nd Gen GP4 Classic
(Regal Beloit Motor)
VarVi GP4 Service Model
(Regal Beloit Motor)
Capacity Lift Voltage MN Service# MN Service# MN Service#
100T SL 440-528V B1(a)
(a) Covers both 360-439V and 440-528V voltage range's. Voltage specific replacement compressor for 360-439V or 440-528V depends on chiller rated
voltage. Refer to chiller nameplate to identify the rated voltage. 360-439V motors are used on 380V/400V chillers. 440-528V motors are used on
200V/230V/460V/575V chillers.
COM11023 BA COM11539 BA COM13092
360-439V BB COM11540 BB COM13093
100T HL 440-528V C1(a) COM11024 CA COM11541 CA COM13094
360-439V CB COM11542 CB COM13095
125T SL 440-528V E3 COM11027 EA COM11543 EA COM13087
125/150T SL 360-439/440-528V E2 COM11026 EB COM11544 EB COM13086
150T SL 360-439V E1 COM11029 EC COM11545 EC COM13085
150T HL 440-528V F2(a) COM11031 FA COM11546 FA COM13088
360-439V FB COM11547 FB COM13089
Additional Parts Required
Note: Must be ordered separately.
Important: Only the compressor is delivered as
standard. Additional parts will be required
and must be ordered separately.
Follow steps below to identify additional parts required:
1. Record the model number, digit 5 (R or S) from the
RTAE nameplate located on the unit.
2. Record the model number, digit 7 (number or letter)
from the motor nameplate located on the compressor
motor.
3. Determine which circuit needs the replacement
compressor (circuit #1 or #2).
4. Determine which additional parts need to be ordered
from the list below using the above information and
purchase them for the GP4 Classic compressor
replacement.

Installation
PART-SVN237B-EN 7
GP4 Model Number Description
Refer to the model number break down for the GP4
compressor family:
GP4 Classic Compressor Parts List
1. Heater
A new cartridge heater will be required for all units. If the
bandheateris ingood condition,it can bereused.Use the
table below to order the heaters required for the GP4
Classic compressor replacement from digit 5 of the unit
model number (R or S).
Table 3. Compressor heaters
Heater
Type
Compressor
Frame Size Service Part Voltage Power
Cartridge R and S HTR19149 120V 125 Watts
Band RHTR13547 120V 70 Watts
Band SHTR13548 120V 90 Watts
2. Terminal box
Anewterminalboxis required.Determinewhichcircuit(1
or 2) of the GP4 classic compressor is being replaced and
order the terminal box using the table below.
Table 4. Compressor terminal box
Terminal Box Mnemonic
Circuit 1A Terminal Box BOX03969
Circuit 2A Terminal Box BOX03970
3. Sound attenuator (Optional)
A new sound attenuation package may be required. If the
unit in the field includes the sound attenuation option,
then the appropriate kit must be ordered for the new GP4
VarVi frame size. Two parts are required for the specific
compressor frame size (R or S).
Refer the below table to determine which sound
attenuation package is required using digit 5 of the unit
model number (R or S):
Table 5. Sound attenuation package
Frame Mnemonic Part Number Description
R
ATT00536 572448450001 ATTENUATOR; SOUND BOX,
BOTTOM, R
ATT00538 572448470001 ATTENUATOR; SOUND BOX,
FRONT, R
S
ATT00537 572448460001 ATTENUATOR; SOUND BOX,
BOTTOM, S
ATT00539 572448480001 ATTENUATOR; SOUND BOX,
FRONT, S
4. A new suction and discharge gasket is required.
Determinewhichgasketstoorderfromthetablebelow
using digit 5 of the unit model number (R or S):
Frame Suction Gasket Discharge Gasket
RGKT04723 GKT04722
SGKT04724 GKT04721
5. Common Mode Chokes are required for replacement
of phase motion motors. If the unit has load inductors
installed then common mode choke (cores) are
required. From the compressor nameplate model
number determine the 7th digit. If digit 7 is a number
then the cores will need to be ordered. If digit 7 is a
letter, do not order the cores.

Installation
8PART-SVN237B-EN
Example: C H H S R B 1 A 1 X X
Phase motion motors (Early GP4 classic) (Common Mode Choke
(cores) will need to be ordered)
A1 (future use)
B1 145-010 Motor designations from Phase part
numbers -
C1 170-011 First 3 digits correspond to motor
length (A - F in Trane model number)
C2 170-095
Last 3 digits correspond to winding
characteristics. (Numeric digit in Trane
model number)
D1 (future use)
E1 165-010
E2 165-014
E3 165-016
F1 190-011
F2 190-014
GP4 Classic Regal Motors (Regal part number shown) (Common
Mode Choke (cores) will not need to be ordered):
BA 2520869-003 100T SL 460V
BB 2520869-004 100T SL 380V
CA 2520869-001 100T HL 460V
CB 2520869-002 100T HL 380V
EA 2520867-005 125T SL 460V
EB 2520867-006 125T/150T SL 380V/460V
EC 2520867-007 150T SL 380V
FA 2520867-001 150T HL 460V
FB 2520867-002 150T HL 380V
FC 2520867-003 165T HL 460V
FD 2520867-004 165T HL 380V
Table 6. Common mode chokes
Description Quantity Mnemonic PN
Common Mode
Core Assembly
One (1) per
circuit COR00252 50711456
Individual
Conductor Core
Five (5) per
conductor COR00253 X13641390010
Note: These parts must be sourced locally.
6. Inline connectors
With removal of the output inductor, the power
conductors will be need to be spliced together. Polaris
Electrical Connectors are recommended (Catalog No.: IT-
250). Six (6) pieces are needed. There are two conductors
per phase.
Figure 2. Insulated in-line connectors
7. Piping and fitting changes may be required. Source
locally.
8. Insulation
Allunitsrequirefieldinstalledinsulation.Installinsulation
before adding refrigerant for proper adhesion.
Heater Information
There are two heaters per compressor:
1. One cartridge/rod style that is the same part number
forbothRandS frame compressors.Thispartnumber
changedbetweenGP4classicandVVi.Heatersneedto
be ordered as separate service parts for the retrofit to
work. See Table 3, p. 7 for the correct part numbers to
order.
2. The band style has not change between GP4 Classic
and VVi. The existing band style heaters on the RTAE
compressor can be reused.
Compressor Heaters
Thecompressor must beheatedany timeitis notrunning
topreventrefrigerantfromcondensinginthecompressor.
The heaters are sized to maintain a minimum of 18°F or
20°F rise above the ambient temperature.
Two heaters are required: a cartridge type in the suction
end of the rotor housing and a band type on the muffler.
See Table 3, p. 7 for heater details.

Installation
PART-SVN237B-EN 9
Removal of Output Inductors (1st
Gen GP4 Classic Compressor
Only)
Physically remove output inductor from each circuit.
Remove thermal cutout limit switch connections 1B3
(circuit 1) or 1B4 (circuit 2); connect wires 431D to wire
433A(circuit1);orconnectwires424Dtowire425A(circuit
2). Bypass or cap off coolant lines that pass through the
inductor. Reconnect the power conductors together with
recommendedPOLARISinsulatedin-linespliceconnector
(See Step 6).
Figure 3. Electrical schematic with output inductor - circuit1
401A
404A
28A
28A
27A
26A
25A
20A
19A
21A
1R3
U1 U2
1R3
V1 V2
1R3
W1 W2
3M1
M
T1
T2
T3
BLK BLK
402A
403A
1X3-10
1B3
1 2
430A
433A
405A 404B
405B
SPLICE
SPLICE
431A,C,D
431A
439A
430H
430G
430F
1XJ34-11XP34-1
1X3-12
431D
1T1
U
V
W
R1
R2
S1
S2
T1
T2
G
CON 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CON 3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CON 7
1
2
3
4
5
6
CON 16
1 2
3
4
CON 17
1
2 3
4
400A
3B1
P
1X3-13
431B
3B5 431J440A 431A,C,D431B 1X3-121X3-13
1XP34-2 1XJ34-2
14
13
"B"
INSET "B"
AFD
CIRCUIT 1
COMPRESSOR 1A
Remove
Connect wire 431D to wire 433A
(removed from output inductor
terminal strip)

Figure 4. Electrical schematic with output inductor - circuit2
32A
32A
22A
23A
24A
29A
30A
31A
1R4
U1 U2
1R4
V1 V2
1R4
W1 W2
4M2
M
T1
T2
T3
406A
407A
408A
409A
BLK BLK
410B SPLICE
SPLICE
410A
1X3-11
423D
423B
423C
424A,C,D
424A
1B4
1 2
423A
425A
424B
411B
411A
424C
4B2
P
1XJ44-1
1XJ44-2
1XP44-1
1XP44-2
1X3-14
424D
1T2
U
V
W
R1
R2
S1
S2
T1
T2
G
CON 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CON 3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CON 7
1
2
3
4
5
6
CON 16
1
2 3 4
CON 17
1 2
3 4
1X3-14
4B6 424E441A 424A,C,D
1X3-15
424B
1X3-15
14
13
INSET "E"
"E"
AFD
CIRCUIT 2
COMPRESSOR 2A
Remove
Connect wire 424D to wire 425A
(removed from output inductor
terminal strip)
Installation
10 PART-SVN237B-EN

Figure 5. Output inductor location
A
1R2 1R1
1R4
1B4
1B8
1M5
1R3
1B3
1T1
1F1
1F38
1F33
1F34
1T2
B
B
1T11
1T12
1T13
1T10
1T14
1T15
1K15
1K6
1K3
1K2
1K8
1K5
1K4
1K9
1K13
1K12
1X4
1XJ3
1K10
1K17
1K18
1K19
1K22
Output Inductor location Output Inductor location
Circuit 2 Circuit 1
Installation
PART-SVN237B-EN 11

Figure 6. System cooling
3-Way Modulating Valve
UC800 Temp Sensor
Expansion
Tank
(Active)
ID
BP
Bypass Valve
BP: Brazed Plate Heat Exchanger
ID: AFD - IGBT/Diodes Heat Exchanger
Figure 7. Insulated in-line connectors
Installation
12 PART-SVN237B-EN

Installation
PART-SVN237B-EN 13
Adding Common Mode Chokes
(1st Gen GP4 Classic Compressor
Only)
Common mode chokes are necessary to maintain
protection against bearing currents causing pre-mature
failure of the compressor bearings. With the removal of
theoutputinductor,commonmodechokesarenecessary.
The choke assembly encircles all current carrying
conductors between the drive and compressor (meaning
do not include ground conductors). Individual cores must
also be installed on the power conductors. Refer to the
schematic and image below. With removal of the output
inductor, the power conductors will be need to be spliced
together. Polaris electrical connectors are recommended
(Catalog No.: IT-250). Six (6) pieces are needed. There are
two conductors per phase.
Table 7. Common mode chokes
Description Quantity Mnemonic
Common Mode Core
Assembly One (1) per circuit COR00252
Individual Conductor
Core Five (5) per conductor COR00253
Figure 8. Electrical schematic with output chokes
Figure 9. Output chokes locations
3M1
M
T1
T2
T3
25A
26A
27A
28A
DRIVE
PANEL
GND
GRN
1T16
400A
401A
4C
5C
6C
,D
,D
,D
1T1
AFD POWER
MODULE
2A35
AUX POWER
GND
Sh (3)
AP- (2)
AP+ (1)
L1/R
L2/S
L3/T
T1/U
T2/V
T3/W
PE
PE
Add

Installation
14 PART-SVN237B-EN
Reprogramming AFD3
Re-programming the AFD3 is necessary after replacing
either the 1st or 2nd Gen GP4 Classic compressor with the
GP4VarViServiceModelonanRTAEunit.Re-programthe
parameters shown in Table 8, p. 14 via the Config and
Binding view in TU software.
High level view process:
1. Navigate to the binding process.
2. UnbindappropriatecircuitAFD3 drivein bindingview.
3. In TU, navigate to the appropriate Config screen.
4. Change required parameters.
5. Navigate to the binding process.
6. Rebind AFD3.
For reference, see AFD3 Service Guide (AFD-SVG01*-EN)
and RTAE Installation, Operation,and Maintenance (IOM)
manual (RTAE-SVX001*-EN).
Figure 10. AFD1 or compressor1A
Parameter Update Required for
1st Generation Only
Table 8. Programming values for AFD3 drive
AFD3 Parameter
Name (FCAT)
GP4 Gen
Replacing GP4 VarVi Service Model Number(a)
FA EA EB(b) CA BA EB(b) FC FB EC FD CB BB
Motor Type (MTPx) Internal Permanent Magnet
Tra nsform er In put
Ratio (ITRx) 1
Total System Inertia
(TSIx) 0.36 kg-m^2
Motor NP Volts
(MVTx) 400 V 400 V 400 V 400 V 400 V 330 V 400 V 340 V 340 V 340 V 340 V 330 V
Motor NP RLA
Current (MRAx)(c)
1st Gen 274 A 214 A 225 A 188 A 158 A 225 A 304 A 304 A 304 A 365 A 225 A 204 A
2nd Gen 298 A 214 A 249 A 188 A 158 A 250 A 304 A 338 A 304 A 397 A 232 A 204 A
Motor NP Power
(MRPx) 168 kW 125 kW 153 kW 123 kW 103 kW 128 kW 194 kW 178 kW 151 kW 196 kW 123 kW 103 kW
Motor NP Number of
Poles (MNPx) 6 poles
Motor NP RPM
(MRSx)
4805
RPM
4004
RPM
4805
RPM
5800
RPM
5800
RPM
4004
RPM
5250
RPM
4805
RPM
4805
RPM
5250
RPM
5800
RPM
5800
RPM
Motor NP magnet flux
(MMFx)
167
mWb
207
mWb
174
mWb
140
mWb
141
mWb
174
mWb
162
mWb
152
mWb
149
mWb
133
mWb
115
mWb
120
mWb

Installation
PART-SVN237B-EN 15
Installation Procedure
Figure 11. Compressor terminal box
New compressor terminal box
Motor NP D-Axis
Inductance (MDIx) 308 µH 475 µH 332 µH 317 µH 378 µH 332 µH 250 µH 219 µH 244 µH 170 µH 212 µH 270 µH
Motor NP Q-Axis
Inductance (MQIx) 308 µH 475 µH 332 µH 317 µH 378 µH 332 µH 250 µH 219 µH 244 µH 170 µH 212 µH 270 µH
Stator Resistance
(MSRx)
2106
µΩ
2780
µΩ
1960
µΩ
2240
µΩ
2840
µΩ
1960
µΩ
1380
µΩ
1220
µΩ
1440
µΩ940 µΩ1500 µΩ
2040
µΩ
Active Harmonic
Damping (AHDx) Disable
Reset to Defaults
(RDFx) No
Input Choke
Impedance (IMPx) 3%
Rectifier Type (RCTx) 6 Pulse
Leakage Signals
(MLIx) 200 µH 280 µH 230 µH 230 µH 300 µH 270 µH 190 µH 180 µH 185 µH 135 µH 175 µH 215 µH
(a) Motor information is stored in the 6th and 7th digit of the model number. For example, the digits in bold of this model number correspond to the
information in the tables above: CHHSRB1A1A0.
(b) Motor model EB is unique in that it has dual ratings at both 460V and 380V. For 200V/230V/460V/575V chillers use the left most EB column. For
380V/400V chillers use the right most EB column.
(c) For certain models, a lesser RLA is used since the installed AFD3 drive is smaller on chillers with 1st Generation GP4 Classic Compressors. Refer to
Tab l e 2, p. 6 to decipher the generation of the failed compressor being replaced. Program the appropriate RLA per the 1st Gen or 2nd Gen row in the
table.
Table 8. Programming values for AFD3 drive (continued)
AFD3 Parameter
Name (FCAT)
GP4 Gen
Replacing GP4 VarVi Service Model Number(a)
FA EA EB(b) CA BA EB(b) FC FB EC FD CB BB

Figure 12. Cartridge heater location
Cartridge heater location
(Band heater can be reused)
Figure 13. Band heater location
Band heater
location
Installation
16 PART-SVN237B-EN

Figure 14. High pressure switch location
Location of high pressure switch
(Reuse fitting from old compressor)
Figure 15. Intermediate oil pressure transducer location
Location of intermediate oil
pressure transducer
Installation
PART-SVN237B-EN 17

Figure 16. Solenoid stems
Leave solenoid stems capped
Figure 17. Piping modifications
Installation
18 PART-SVN237B-EN

Figure 18. Fitting installation for suction transducer in the suction line
Figure 19. Threadelet installation - 1/4 inch pipe thread
Installation
PART-SVN237B-EN 19

Figure 20. Follow standard welding procedures when welding 1/4 inch pipe thread threadelet in place
Figure 21. Pressure teat and paint threadelet
Installation
20 PART-SVN237B-EN