Operating instructions

4 32-5027-11
User’s Information
Proper Maintenance
Reduces Energy Use
Airflow
Your filter may or may not be framed.
UPFLOW BOTTOM RETURN
UPFLOW SIDE RETURN
UPFLOW ONLY
Airflow
Airflow
Airflow
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. Excessive
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 improve
the performance of your system.
Replacing your filter.
When replacing your furnace filters, always use high velocity
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
velocity type which are the same size as originally supplied.
How to remove your filter.
▲
WARNING
!
Disconnect power to unit before removing blower door.
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.