Trane XL80 Owner's Manual | Page 7
Proper Maintenance – Gas Furnaces
Clean the filter once a month for optimum performance. 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, however; the
Furnace should never be run without a filter.
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
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.
Help ensure top efficiency by cleaning the filter once a month.
Clean it twice a month during seasons when the unit runs
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
When replacing your furnace filters, always use a 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 the filter from your Gas Furnace.
Never operate your unit for either heating or cooling with
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 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 retaining brackets, if present, or that the filter is securely
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
Upflow/Horizontal Furnace Filters
The Upflow/Horizontal furnace when installed horizontally
requires a horizontal filter kit. The filters may be located remote
to the furnace or in the return air duct near the furnace. Check
with your dealer for the location of your filters.
An upflow/horizontal furnace in horizontal return air filter
application, as shown, features two 16" x 20" x 1" filters in the
17-1/2", 21" and 24-1/2" wide furnace cabinets.
To replace filters, remove the filter access door, lift the filter
from the lower bracket and shift the filter to the side to free the
top filter from the bracket and slide the filters out through the
filter access door. After cleaning, replace the filters in the same
manner making sure that the filters are secured in place in both
top and bottom filter brackets. Replace filter access door.
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 Bottom Return
Upflow Side Return
Your filter may
or may not be
slid al the way into the filter rack. 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.
With Filter Kit
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