Filter
Top Products
5
Air Filter(s) —
Air filter(s) should be checked at least ev-
ery 3 or 4 weeks and changed or cleaned when necessary.
Table 1 indicates the correct filter size for your unit. See Fig. 4
for filter access door location.
To replace or inspect filters:
1. Lift up and remove filter access panel.
2. While holding filter, tilt upper filter rack.
3. Remove filters by pulling up and out toward you from the
track.
4. Inspect or replace filters.
5. Return filters to filter track. Note direction of airflow
arrows on filter frame.
6. Replace filter access panel.
If you have difficulty in locating your air filter, or if you
have questions concerning proper filter maintenance, contact
your dealer for instructions. When replacing your unit filters,
always use the same size and type of filter that was originally
supplied by the installer.
Units with outdoor air capability have a cleanable filter for
the outdoor air. This filter should be checked annually and
cleaned as necessary with steam or hot water and a mild deter-
gent. Do not use throwaway filters in place of cleanable filters.
Table 1 — Indoor-Air Filter Data
NOTE: Replacement filters should be UL (Underwriters’ Laborato-
ries) certified or equivalent.
Heat Exchanger —
To ensure dependable and efficient
heating operation, the heat exchanger should be checked by a
qualified maintenance person before each heating season, and
cleaned when necessary. This checkout should not be attempt-
ed by anyone not having the required expertise and equipment
to do the job properly. Checking and/or cleaning the heat
exchanger involves removing the gas controls assembly and
the flue collector box cover and, when completed, reinstalling
the gas controls assembly for proper operation. Also, the flue
collector box cover must be replaced correctly so that a proper
seal is maintained. Contact your dealer for the required period-
ic maintenance.
Fans, Belts and Fan Motor —
Periodically check the
condition of the fan wheels and housings, belt tension and fan
motor shaft bearings. No lubrication of condenser or evapora-
tor fan bearings or motors is required or recommended.
Evaporator and Condenser Coils —
Cleaning of the
coils should be done by qualified service personnel. Contact
your dealer for the required annual maintenance.
Condensate Drain —
The drain pan and condensate
drain line should be checked and cleaned at the same time the
cooling coils are checked by your dealer.
Compressor —
All compressors are factory supplied with
a normal charge of the correct type refrigeration-grade oil in
them and should not require additional oil.
Condenser Fan
The fan must be kept free of all obstructions to ensure
proper cooling. Contact your dealer for any required service.
Electrical Controls and Wiring —
Electrical controls
are difficult to check without proper instrumentation; therefore,
if there are any discrepancies in the operating cycle, contact
your dealer and request service.
Refrigerant Circuit —
The refrigerant circuit is difficult
to check for leaks without the proper equipment; therefore, if
inadequate cooling is suspected, contact your local dealer for
service.
Never operate your unit without filters in place. Failure to
heed this warning may result in damage to the blower
motor and/or compressor. An accumulation of dust and lint
on internal parts of your unit can cause loss of efficiency
and, in some cases, fire.
UNIT SIZE
48TF,TM
INDOOR-AIR FILTERS
(Throwaway Fiberglass)
Quantity Size (in.)
004-007 2 16 x 25 x 2
008, 009 4 16 x 20 x 2
012, 014 4 20 x 20 x 2
Do not poke sticks, screwdrivers, or any other object into
revolving fan blades. Severe bodily injury may result.
FILTER ACCESS PANEL
Fig. 4 — Typical Filter Access Panel Location
Sizes 004-007
Sizes 008-014