Owners Manual
6
441 02 2401 04
Specifications subject to change without notice.
CUT HAZARD
Failure to follow this caution may result in personal
injury.
Although special care has been taken to minimize
sharp edges, be extremely careful when handling
parts or reaching into the furnace. Wear safety
glasses, gloves, and appropriate protective clothing.
CAUTION
!
FILTERING OUT TROUBLE
UNIT PERFORMANCE HAZARD
Failure to follow this caution may result in product
damage.
Never operate your furnace without a filter in place.
Doing so may damage the furnace blower motor. An
accumulation of dust and lint on internal parts of your
furnace can cause a loss of efficiency.
CAUTION
!
A dirty filter will cause excessive stress on the furnace, heat
exchanger, and blower motor and can cause it to overheat
and automatically shut down. The furnace filter should be
checked every 4 weeks and cleaned or replaced if necessary.
If installed with factory specified disposable media filter, check
or replace filter before each heating and cooling season.
Replace disposable media filter at least twice a year.
If your furnace filter needs replacing, be sure to use the same
size and type of filter that was originally specified.
The air filter for the furnace may be located in a filter
cabinet/rack attached to the side or bottom of the furnace. If
air filter has been installed in another location, contact your
dealer for instructions. To inspect, clean and/or replace the air
filter(s), follow these steps:
1. Turn off the electrical supply to the furnace.
Figure 13 − Turn Off Electrical Supply
A92185
2. Remove filter cabinet door/rack.
3. Slide air filter out of filter cabinet/rack. Keep dirty side up
(if dirty) to avoid spilling dirt.
4. Inspect the filter. If torn, replace it.
NOTE: If the filter is:
a. a factory specified disposable media filter — Do not
clean. If dirty, replace only with media filter having
the same part number and size. Install with airflow
direction arrow pointing towards blower.
b. an Electronic Air Cleaner (EAC) — Refer to EAC
Owner’s Manual for maintenance information.
c. a factory specified disposable filter do not clean,
replace it with a new filter of same size.
d. a washable filter, wash filter (if dirty) in sink, bathtub,
or outside with a garden hose. Always use cold tap
water. A mild liquid detergent may be used if
necessary. Spray water through filter in the opposite
direction of airflow. Allow filter to dry.
5. Reinstall clean air filter.
6. Replace filter cabinet door.
7. Turn on electrical supply to furnace (See Figure 11).
NOTE: If side return ducts are used, two filters may be
required in some models. The procedure listed above may be
used to remove side filters.
Filters may be field modified by cutting filter material and
support rods (3) in filters. Alternate sizes and additional filters
may be ordered from your dealer.
FURNACE
CASING WIDTH
in (mm)
FILTER QUANTITY AND SIZE *
**
FILTER TYPE*
SIDE RETURN
in (mm)
BOTTOM RETURN
in (mm)
14-1/2 (368) (1) 16 x 25 (406 x 635) (1) 14 x 25 (356 x 635)
1” (25 mm) thick cleanable or 4-5/16” (110 mm)
thick media-type
17-1/2 (445) (1) 16 x 25 (406 x 635) (1) 16 x 25 (406 x 635)
1” (25 mm) thick cleanable or 4-5/16” (110 mm)
thick media-type
21 (533) (1) 16 x 25 (406 x 635) (1) 20 x 25 (508 x 635)
1” (25 mm) thick cleanable or 4-5/16” (100 mm)
thick media-type
24 (610) (1) 16 x 25 (406 x 635) (1) 24 x 25 (610 x 635)
1” (25 mm) thick cleanable or 4-5/16” (100 mm)
thick media-type
*Recommended
**Some furnaces may have 2 filters