Carrier AquaEdge 23XRV Start-Up, Operation And Maintenance Instructions Manual page 47

a. Turn on pumpout condenser water.
b. Open valves 3 and 4, and place valves in the following
positions:
VALVE 1A 1B 2 3
CONDITION C
c. Run the pumpout compressor until the chiller pressure
reaches 35 psig (241 kPa), followed by turning off the
pumpout compressor. Warm chiller condenser water will
boil off any entrapped liquid refrigerant, and chiller pres-
sure will rise.
d. When chiller pressure rises to 40 psig (276 kPa), turn on
the pumpout compressor until the pressure reaches
35 psig (241 kPa) again; then turn off the pumpout com-
pressor. Repeat this process until the chiller pressure no
longer rises.
a23-1738
Fig. 50 — Pumpout System Piping Schematic with Storage Tank for 23XRV Units with P Compressor
4 5 6 7 8 10 11
C C C C
1b
CONDENSER
7
11
EXV
1a
COOLER
e. Start the chiller water pumps (condenser and cooler),
establishing water flow. At this point, turn on the pum-
pout compressor in auto until the vacuum switch is satis-
fied. This occurs at approximately 15 in Hg vacuum
(48 kPa absolute or 7 psia).
f. Close valves.
VALVE 1A 1B
CONDITION C
g. Turn off the pumpout condenser water.
Chillers with Isolation Valves
The valves referred to in the following instructions are shown in
Fig. 50 and 51. The cooler/condenser vessels can be used for
refrigerant isolation for certain service conditions when the isola-
tion valve package is specified.
PUMPOUT
COMPRESSOR
2 3
5
4
6
STORAGE VESSEL
10
47
2 3 4 5 6 7
C C C C C C C
RELIEF
VALVE
OIL
SEPARATOR
PUMPOUT
CONDENSER
CHECK
VALVE
8 10 11
C C