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32-5035-16
User’s Information
Proper Maintenance
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. Ex-
cessive 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 run-
ning 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.
NOTE: Not all aftermarket filters can be washed with
a household detergent. See the instructions supplied
by the aftermarket filter manufacturer.
How to remove your filter.
▲
WARNING
!
ELECTRIC SHOCK HAZARD
DISCONNECT POWER TO UNIT BEFORE REMOVING
BLOWER DOOR.
FAILURE TO FOLLOW THIS WARNING
COULD RESULT IN PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
Upflow furnaces use a high velocity type air filter
which may be located within the furnace blower com-
partment in either a BOTTOM or SIDE (left or right)
return air inlet. The filter may be secured with filter
retaining brackets (as shown) or a filter rack.
To clean or replace filters, remove blower access door,
slide the filter from the filter rack or remove the filter
from the retaining brackets. After cleaning, replace the
filter in the same manner, making sure that the filter
is secured in place in both the front and back filter re-
taining brackets, if present, or that the filter is secure-
ly slid all the way into the filter rack. Replace blower
access door. A bottom return air inlet as shown fea-
tures 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.
When replacing your furnace filters, always use a high
velocity type which are the same size as originally sup-
plied. 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 sup-
plied.
AIR FILTERS
Clean the filter once a month for optimum perfor-
mance. A monthly visual inspection of the furnace
is also recommended. See General Inspection
on page 9, number 1.
NOTE: Filters are NOT included with all Furnaces, how-
ever; the Furnace should never be run without a filter.
Your filter may or may not be framed.
Airflow
UPFLOW
SIDE RETURN
Airflow
UPFLOW
BOTTOM RETURN
Airflow
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