Components And Controls; Compressor; High- And Low-Pressure - Rheem RP1336AC1NA Installation Instructions Manual

COMPONENTS AND CONTROLS

Compressor Crankcase Heat (CCH)
While scroll compressors usually do not require
crankcase heaters, there are instances when a
heater should be added� Refrigerant migration
during the off cycle can result in a noisy start up�
Add a crankcase heater to minimize refrigeration
migration, and to help eliminate any start up noise
or bearing "wash out�"
NOTE: The installation of a crankcase heater is
recommended if the system charge exceeds the
values in the table below� The 5 ton model comes
with a crankcase heater factory installed�
MAXIMUM SYSTEM CHARGE VALUES
Model

Compressor

Size* Model Number
RP1336AC ZP31K5E-TF5-13R
RP1342AC ZP36K5E-TF5-13R
RP1348AC ZP42K5E-TF5-13R
RP1360AC ZP49K6E-TF5-130
RP1336AD ZP31K5E-TFD-13R
RP1342AD ZP36K5E-TFD-13R
RP1348AD ZP42K5E-TFD-13R
RP1360AD ZP49K6E-TFD-130
MAXIMUM SYSTEM CHARGE VALUES
Model Compressor
Size* Model Number
ZP16K5E-PFV-13R
RP1418AJ
ZP21K6E-PFV-130
RP1424AJ
ZP25K5E-PFV-13R
RP1430AJ
ZP31K5E-PFV-13R
RP1436AJ
ZP36K5E-PFV-13R
RP1442AJ
ZP42K5E-PFV-13R
RP1448AJ
ZP49K6E-PFV-130
RP1460AJ
ZP31K5E-TF5-13R
RP1436AC
ZP36K5E-TF5-13R
RP1442AC
ZP42K5E-TF5-13R
RP1448AC
ZP49K6E-TF5-130
RP1460AC
ZP31K5E-TFD-13R
RP1436AD
ZP36K53-TFD-13R
RP1442AD
ZP42K5E-TFD-13R
RP1448AD
ZP49K6E-TFD-130
RP1460AD
Hard-Start Components
Start components are not usually required with
the scroll compressors used in heat pumps,
but are available for special cases and where
High- and Low-Pressure Controls (HPC and LPC)
Standard on RP14: These controls keep the
compressor from operating in pressure ranges
which can cause damage to the compressor� Both
controls are in the low-voltage control circuit�
The high-pressure control (HPC) is an automatic-
reset which opens near 610 PSIG and closes near
420 PSIG�
The low-pressure control (LPC) is an automatic-
reset which opens near 15 PSIG and closes near
40 PSIG�
34
ll heaters are located on the lower half of the
compressor shell� Its purpose is to drive refrigerant
from the compressor shell during long cycles,
thus preventing damage to the oompressor during
start-up�
At initial start-up or after extended shutdown
periods, make sure the heater is energized for at
least 12 hours before the compressor is started�
(Disconnect switch on and wall thermostat off�)
Charge Limit
Without
Crankcase Heater*
9.6 lbs.
9.6 lbs.
MAXIMUM SYSTEM CHARGE VALUES
12 lbs.
12 lbs.
Model
9.6 lbs.
Size*
9.6 lbs.
RP1518AJ
12 lbs.
12 lbs. RP1524AJ
RP1530AJ
RP1536AJ
RP1542AJ
RP1548AJ
RP1560AJ
Charge Limit
RP1536AC
Without
RP1542AC
Crankcase Heater*
RP1548AC
9.6 lbs.
RP1560AC
9.6 lbs.
9.6 lbs.
9.6 lbs.
9.6 lbs.
12 lbs.
12 lbs.
9.6 lbs.
9.6 lbs.
12 lbs.
12 lbs.
9.6 lbs.
9.6 lbs.
12 lbs.
12 lbs.
start components are desirable to reduce light
dimming� Hard start components are available
through Prostock�
an internal overload protector� Under some
conditions, it can take up to 2 hours for this
overload to reset� Make sure overload has had
time to reset before condemning the compressor�
Compressor
Model Number
ZP16K5E-PFV-13R
ZP21K5E-PFV-13R
ZP25K5E-PFV-13R
ZP31K6E-PFV-130
ZP36K5E-PFV-13R
ZP40K6E-PFV-130
ZP49K6E-PFV-130
ZP31K6E-TF5-130
ZP36K5E-TF5-13R
ZP40K6E-TF5-130
ZP49K63-TF5-130
CAUTION:
The compressor has
Charge Limit
Without
Crankcase Heater*
9.6 lbs.
9.6 lbs.
9.6 lbs.
9.6 lbs.
9.6 lbs.
12 lbs.
12 lbs.
9.6 lbs.
9.6 lbs.
12 lbs.
12 lbs.