Rheem ARL-JEZ 16 Seer Series, Installation Instructions Manual, Page: 20 / 40

20
A thermostat and a 24 volt, 40 VA minimum transformer are required for the control
circuit of the condensing unit. The furnace or the air handler transformer may be
used if sufficient. Verify the correct primary voltage tap is used on the transformer.
NOTE: Reference unit wiring diagram for detailed wiring instructions.
FACTORY INSTALLED ACCESSORIES
HARD START COMPONENTS
Start components are factory installed.
HIGH AND LOW PRESSURE CONTROLS
(HPC OR LPC)
Pressure controls are factory installed.
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.
High pressure control (HPC) is an automatic reset which opens near 610 PSIG and clos-
es near 420 PSIG.
The low pressure control (LPC) is an automatic reset which opens near 50 PSIG and
closes near 95 PSIG.
COMPRESSOR SOUND WRAP
All (-)ARL and (-)ASL units are factory equipped with compressor sound wraps to
reduce operating noise levels.
COMPRESSOR CRANKCASE HEATER (CCH)
The 5-ton (-)ARL is factory equipped with a crankcase heater. Refrigerant migration
during the off cycle can result in a noisy start up. The crankcase heater minimizes
refrigeration migration and helps reduce start up noise or bearing “wash out.”
The heater is located on the lower half of the compressor shell. Its purpose is to
drive refrigerant from the compressor shell during low outdoor ambient conditions
(below 75°F), thus preventing damage to the compressor during start-up. At initial
start-up or after extended shutdown periods during low outdoor ambient conditions
(below 75°F), make sure the heater is energized for at least 12 hours before the
compressor is started. (Disconnect switch on and wall thermostat off.)
CONTROL BOX COVER
The control box cover allows access to the Comfort Control System™ diagnostic
chart is provided on the control box cover.
FIGURE 2
CONTROL WIRING FOR GAS OR OIL FURNACE
FOR TYPICAL ELECTRIC HEAT FOR TYPICAL GAS OR OIL HEAT
C
Y Y
G
C
Y
R
R
W
L
R
W/BL
R
W/BK
G/BK
YL
BR
PU
YL/BL
L Y G
W
R Y2
TYPICAL THERMOSTAT
SUBBASE
TYPICAL GAS OR
OIL FURNACE
TYPICAL CONDENSING
UNIT
BR – BROWN WIRE
YL – YELLOW WIRE
X – WIRE CONNECTION
W/RD – WHITE/RED
RD – RED WIRE
W/RD – WHITE/RED
BR – BROWN WIRE
RD – RED WIRE
YL – YELLOW WIRE
W/BK – WHITE WIRE WITH BLACK STRIPE
G/BK – GREEN WIRE WITH BLACK STRIPE
PU – PURPLE WIRE (NOT USED)
X – WIRE CONNECTION
* IF MAXIMUM OUTLET TEMPERATURE RISE IS DESIRED, IT IS RECOMMENDED THAT
W1 (W/BK) AND W2 (W/BL) BE JUMPERED TOGETHER.
W/RD
RD
YL
BR
YL/BL
TYPICAL CONDENSING
UNIT
W/RD
RD
YL
BR
YL/BL
X
X
X
X
X
X
X
X X
X
X
X
X
Y2
X
•
X
L Y G
W
R Y2
TYPICAL THERMOSTAT
SUBBASE
X
TYPICAL ELECTRIC HEAT
LOW VOLTAGE JUNCTION BOX
C
Y2
X
Y2
L
•
*