Operating instructions

4 32-5027-16
User’s Information
Proper Maintenance
Reduces Energy Use
Your filter may or may not be framed.
AIR FILTERS
NOTE: Filters are NOT included with all Furnaces
A clean filter saves money.
When the furnace circulates and filters the air in your
home, dust and dirt particles build up on the filter. Exces-
sive accumulation can block the airflow, forcing the unit to
work harder to maintain desired temperatures.
And the harder your unit has to work, the more energy it
uses. So you pay more any time your system is running
with a dirty filter.
▲
CAUTION
!
Never operate your unit for either heating or cooling with
filters removed.
Help ensure top efficiency by cleaning the filter once a
month. Clean it twice a month during seasons when the
unit runs more often.
You can clean the filter with a vacuum, OR you can wash it
with a household detergent.
Both methods are quick and easy, and guaranteed to im-
prove the performance of your system.
Replacing your filter.
When replacing your furnace filters, always use high veloc-
ity type which are the same size as originally supplied.
Filters are available from your dealer.
Where disposable filters are used, they must be a high ve-
locity type which are the same size as originally supplied.
How to remove your filter.
▲
WARNING
!
SAFETY HAZARD
DISCONNECT POWER TO UNIT BEFORE MOVING THE
BLOWER DOOR. FAILURE TO FOLLOW THIS WARNING
MAY RESULT IN PERSONAL INJURY, PROPERTY DAM-
AGE, OR DEATH.
Upflow furnaces use a high velocity type air filter which
may be located within the furnace blower compartment in
either a BOTTOM or SIDE (left or right) return air inlet.
The furnace may be secured with filter retaining brackets
(as shown) or a filter retainer wire.
To replace filters, remove blower access door, push back to
flex the filter and clear the filter retaining bracket at the
front of the unit. After cleaning, replace the filter in the
same manner making sure that the filter wire is secured
in place in both front and back filter retaining brackets.
Replace blower access door.
A bottom return air inlet as shown features a 17" x 25" x 1"
filter in the 17-1/2" wide furnace cabinets; a 20" x 25" x 1"
filter in the 21" wide models; and a 24" x 25" x 1" filter in
the 24-1/2" wide cabinet.
For vertical UPFLOW ONLY, a left or right return air inlet
as above (left side shown) requires trimming of the factory
supplied filter to 17" x 25" x 1" for both the 21" and 24-1/2"
wide furnaces.
Air filters may also be located outside of the furnace using a
SIDE FILTER FRAME.
UPFLOW BOTTOM RETURN
Airflow
Airflow
UPFLOW SIDE RETURN
Airflow
UPFLOW ONLY
Airflow