Field Installed Accessories; Comfort Control System - Rheem ARL-JEZ 16 Seer Series Installation Instructions Manual

FIELD INST LLED CCESSORIES
COMPRESSOR CR NKC SE HE T (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: A crankcase heater should be installed if: the charge of the system exceeds
the values in Table 1, if the system is subject to voltage variations or when a low
ambient control is used for system operation below 55°F.
All heaters are located on the lower half of the compressor shell. Its purpose is to
drive refrigerant from the compressor shell during long off cycles, thus preventing
damage to the compressor during start-up.
At initial start-up or after extended shutdown periods, make sure the heater is ener-
gized for at least 12 hours before the compressor is started. (Disconnect switch on
and wall thermostat off.)
NOTE: Reference unit wiring diagram for detailed wiring instructions.
IMPORTANT: (-)ARL & (-)ASL unit sound wraps are not compatible with field
installed crankcase heaters. Sound wraps must be removed unless the unit was
factory-equipped with a crankcase heater or a field installed insulating strip (PRO-
STOCK part no. 686033) is used. This strip insulates the field installed crankcase
heater from the soundwrap.
LOW MBIENT CONTROL (L C) – RX D- 03
This component senses compressor head pressure and shuts the condenser fan off
when the head pressure drops to approximately 220 PSIG. This allows the unit to build a
sufficient head pressure at lower ambient in order to maintain system balance and
obtain improved capacity. Low ambient control should be used on all equipment operat-
ed below 70°F [21°C] ambient.
OUTDOOR UNIT COVERS
Outdoor condensing unit covers are available if the homeowner requests a cover for
their unit. With the complete model number for the unit, the correct cover can be
obtained through an authorized distributor.
C UTION
FAILURE TO REMOVE CONDENSING UNIT COVER BEFORE OPERATING
OUTDOOR UNIT CAN CAUSE COMPONENTS TO FAIL.

COMFORT CONTROL SYSTEM

The Integrated Compressor Control (ICC) is an integral part of the Comfort Control
System and has the following features:
- Independent compressor and outdoor fan control
- Anti-short cycle protection (3 minute)
- Minimum unit run time (30 seconds)
- 7-segment LED to display status and diagnostics for faster service and accuracy
- High and low pressure switch monitoring
- Power and control voltage monitoring
- Active compressor protection integrated into the control
- Fault Recall capability with power loss memory
- Test Button allows unit operation for start-up diagnostics
- Can be used with a standard thermostat
- Flash diagnostic codes to room thermostat with L terminal
- Sealed compressor relay
- Compressor Solenoid Control
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