7
I
NDOOR
A
IR
C
IRCULATOR
B
LOWER
Keep the blower access door panel in place except for inspec-
tion and maintenance.
R
OUTINE
M
AINTENANCE
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.
A
NNUAL
I
NSPECTION
Your package unit should be inspected by a qualified 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 with-
out 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 firmly 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 flame, and flame
sense.
• Wiring. Check electrical connections for tightness and/or
corrosion. Check wires for damage.
• Filters. Check that filters are clean and in the proper place-
ment 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.
R
EPLACING
OR
C
LEANING
F
ILTER
IMPORTANT NOTE:
Never operate unit without a filter installed
as dust and lint will build up on internal parts resulting in loss of
efficiency, equipment damage and possible fire.
A return air filter is not supplied with this unit; however, there must
be a means of filtering the return air. The filter(s) may be located
in the return air duct(s). Consult with your installing dealer for the
actual location of the return air filter(s) in your unit.
A dirty filter 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 filters should be discarded and replaced with a
new, clean filter. Dirty permanent filters should be washed with
water, thoroughly dried and sprayed with a filter adhesive before
being reinstalled. (Filter adhesives may be found at many hard-
ware stores.) Permanent filters should last several years. How-
ever, should one become worn or uncleanable, it should be
replaced.
When installing a new filter or reinstalling an old one, always
make certain the air flow arrows on the filter point in the proper
direction.
C
LEAN
O
UTSIDE
C
OIL
(Q
UALIFIED
S
ERVICER
O
NLY
)
WARNING
T
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK,
DISCONNECT THE ELECTRICAL SWITCH BEFORE CLEANING THE COIL(S).
The coil with the outside air flowing over it should be inspected
annually and cleaned as frequently as necessary to keep the
finned areas free of leaves, grass, seeds, and debris.
C
ONDENSER
, E
VAPORATOR
,
AND
I
NDUCED
D
RAFT
M
OTORS
Bearings on the air circulating blower motor, condenser motor
and the combustion fan motor are permanently lubricated. No
additional oiling is required.
C
OMPRESSOR
The compressor motor is hermetically sealed and does not
require additional oiling.