GPG14M User Mannual
7
Keep the blower access door panel in place except for inspection
and maintenance.
If you perform maintenance on the unit yourself, remember that
certain mechanical and electrical knowledge, skills and tools are
required to perform unit maintenance. Personal injury or death may
result If you are not properly trained. You should call your installing
dealer or place of purchase if you are uncertain about your ability
to perform maintenance.
Your package unit should be inspected by a qualied installer, or
service agency at least twice every year. This check should be
performed before the heating and cooling seasons begin. This will
ensure that adequate combustion air is being drawn and the vent
system is working properly. Particular attention should be paid to
the following items. Repair as necessary.
• Check physical support of the unit. Ensure it is sound without
any sagging, cracks, or gaps, around the base.
• Check for obvious signs of deterioration of the unit.
• Flue Hood and Combustion Air Inlet. Check for blockage (wasp
nest, etc.) and corrosion.
Flue Hood
Combustion
Air Inlet
Flue Hood
• Return Air Connection. Check for physical soundness and
ensure that the connection is rmly sealed to the package unit
casing.
• Heat exchanger. Check for corrosion and/or obstructions within
the heat exchanger passageways.
• Burners. Check for proper ignition, burner ame, and ame
sense. For Ultra Low NOx models, check for blockage inside
the air mixer for sealed burner box.
• Wiring. Check electrical connections for tightness and/or cor-
rosion. Check wires for damage.
• Filters. Check that lters are clean and in the proper placement
in the unit or duct system.
• Louvers. Inspect air inlet louvers inside the heat exchanger
compartments. Ensure the area is clean and free of dirt and
debris.
IMPORTANT NOTE: Never operate unit without a lter installed
as dust and lint will build up on internal parts resulting in loss of
eciency, equipment damage and possible re.
A return air lter is not supplied with this unit; however, there must
be a means of ltering the return air. The lter(s) may be located
in the return air duct(s). Consult with your installing dealer for the
actual location of the return air lter(s) in your unit.
A dirty lter is the most common cause of inadequate heating or
cooling performance. Filter inspection should be made at least every
two months; more often if necessary because of local conditions
and usage.
Dirty throwaway lters should be discarded and replaced with a
new, clean lter. Dirty permanent lters should be washed with
water, thoroughly dried and sprayed with a lter adhesive before
being reinstalled. (Filter adhesives may be found at many hardware
stores.) Permanent lters should last several years. However, should
one become worn or uncleanable, it should be replaced.
When installing a new lter or reinstalling an old one, always make
certain the air ow arrows on the lter point in the proper direction.
WARNING
T
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK,
DISCONNECT THE ELECTRICAL SWITCH BEFORE CLEANING THE COILS.
The coil with the outside air owing over it should be inspected
annually and cleaned as frequently as necessary to keep the nned
areas free of leaves, grass, seeds, and debris.
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Bearings on the air circulating blower motor, condenser motor and
the combustion fan motor are permanently lubricated. No additional
oiling is required.
The compressor motor is hermetically sealed and does not require
additional oiling.