Instruction Manual

26
Figure 1 - Lockable Handle
The warranty card must be completed in full
and returned to AAON not more than 3
months after unit is delivered.
Storage
If installation will not occur immediately
following delivery, store equipment in a dry
protected area away from construction
traffic and in the proper orientation as
marked on the packaging with all internal
packaging in place. Secure all loose-shipped
items.
Packaged Direct Expansion (DX) Units
All DX refrigeration systems are factory
assembled, leak tested, charged with
refrigerant, and run tested.
All refrigerant systems include an
evaporator, condenser, liquid line filter
driers, thermal expansion valves (TXV) and
scroll compressors. Compressors are
equipped with a positive pressure forced
lubrication system.
CRANKCASE HEATER
OPERATION
Some units are equipped with
compressor crankcase heaters,
which should be energized at least
24 hours prior to cooling operation, to
clear any liquid refrigerant from the
compressors.
CAUTION
COMPRESSOR CYCLING
5 MINUTE MINIMUM OFF TIME
To prevent motor overheating
compressors must cycle off for a
minimum of 5 minutes.
5 MINUTE MINIMUM ON TIME
To maintain the proper oil level
compressors must cycle on for a
minimum of 5 minutes.
The cycle rate must not exceed 6
starts per hour.
WARNING