Reznor PDH Operation Manual PreevA - Manual (Page 22)

Form O-PreevA, Page 22
3.7 Optional
Cooling Coil
Module (cont’d)
The following instructions include major points of consideration that will ensure proper
installation and protect you from potential personal injury. Please use the following 13
Steps as a checklist, taking each item in order before proceeding to the next. If more
information is required, call the Reznor ® Service Department.
 Step 2. Determine Cause of Initial Failure and Remove the Compressor
In order to prevent a second failure, the cause of the original failure must be deter-
mined. Identify the cause and make the necessary repairs.
CAUTION: DO NOT LIFT compressor by copper tubing; damage will
occur. Compressor must remain upright.
DANGER
To avoid electrical shock, power to the compressor MUST
REMAIN OFF during performance of Steps 1 through 9
below. LOCK DISCONNECT SWITCH OFF (open).
 Step 1. Verify Proper Application
Verify that the replacement compressor is identical to the model being replaced. All
system components are matched to the compressor. Replacing a compressor with
a model other than the Thomas and Betts specified replacement for these Reznor ®
PREEVA ® units will void the product warranty. See part numbers for R410A reheat
pump compressors listed in the table below.
3.7.4 Optional Reheat
Module (cont’d)
3.0 Maintenance
Procedures
(cont’d)
Replacement
Scroll
Compressors
for Reheat
Module
(R410A
Refrigerant)
IMPORTANT:
The Model
of the
replacement
compressor
MUST BE
IDENTICAL
to removed
compressor.
SDH, PDH,
RDH
SHH,
RHH
PEH,
REH
PXH,
RXH
ARI
Tonnage
Voltage
Compressor
Model*
Reznor ®
P/N
75, 100,
125, 150,
175, 200,
225
130,
180
10A,
20A,
40A,
15B,
30B,
60B
000A,
000B,
000C
2.4
208-240/1/60
(AK2 and AK3) ZP29K5E-PFV 216673
208-240/3/60
(AK5 and AK6) ZP29K5E-TF5 216674
460/3/60 (AK7) ZP29K5E-TFD 216675
575/3/60 (AK8) ZP29K5E-TFE 234055
250, 300,
350, 400A
260,
350
30D,
60D,
90D,
120D,
40E,
80E,
120E
000D,
000E
4.8
208-240/1/60
(AK2 and AK3) ZP57K3E-PFV 216685
208-240/3/60
(AK5 and AK6) ZP57K3E-TF5 216686
460/3/60 (AK7) ZP57K3E-TFD 216687
575/3/60 (AK8) ZP57K3E-TFE 216688
*Model No. of replacement R410A scroll compressor must be identical to the one removed including the “E”
(ZP29Kx E-xxx) which indicates POE compressor oil.
Use a high temperature torch to disconnect the suction line and the discharge line
from the compressor.
d) Remove the mounting bolts and the compressor. Save the mounting hardware
to attach the grommets and sleeves shipped with the replacement compressor.
Refrigerant System Maintenance
a) BEFORE REMOVING THE FAULTY COMPRESSOR, remove refrigerant charge
using proper recovery procedures. Call 1-800-441-9450 for the name of the near-
est Dupont authorized distributor or 1-800-ASK-KLEA (IGI) for information on their
refrigerant reclaim programs.
b) Disconnect wires. All compressor wiring is connected using a black molded
plastic plug. Remove the plug from the compressor.
c) Open access ports so that pressure does not build up in the system. Before
unbrazing stubs from the compressor, cut suction and discharge tubing with a
tubing cutter.
WARNING
Wear eye protection and gloves when handling refrigerant or oil
and when brazing.
WARNING
Have a fire extinguisher near. The compressor contains oil. There
is a risk of fire when unbrazing stubs.