AAON LZ Series, Installation Operation & Maintenance

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If repairs must be made to damaged goods,
then the factory should be notified before any
repair action is taken in order to protect the
warranty. Certain equipment alteration,
repair, and manipulation of equipment
without the manufacturer’s consent may void
the product warranty. Contact AAON
Technical Support for assistance with
handling damaged goods, repairs, and freight
claims: (918) 382-6450.
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. Leave all internal packaging in place
and secure all loose-shipped items.
Outdoor Mechanical Room
Failure to observe the following instructions
will result in premature failure of your
system, and possible voiding of the warranty.
Never turn off the main power supply to the
unit, except for complete shutdown. When
power is cut off from the unit, any
compressors equipped with crankcase heaters
cannot prevent refrigerant migration. This
means the compressor will cool down, and
liquid refrigerant may accumulate in the
compressor. The compressor is designed to
pump refrigerant gas and damage may occur
when power is restored if liquid enters the
compressor.
COMPRESSOR CYCLING
3 MINUTE MINIMUM OFF TIME
To prevent motor overheating
compressors must cycle off for a
minimum of 3 minutes.
3 MINUTE MINIMUM ON TIME
To maintain the proper oil level
compressors must cycle on for a
minimum of 3 minutes.
The cycle rate must not exceed 6
starts per hour.
WARNING
Before unit operation, the main power
switch must be turned on for at least
24 hours for units equipped with
crankcase heaters.
CAUTION
Rotation must be checked on all
MOTORS AND COMPRESSORS of
three phase units. All motors, to
include and not be limited to pump
motors and condenser fan motors,
should all be checked by a qualified
service technician at startup and any
wiring alteration should only be made
at the unit power connection.
CAUTION