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Filter Rack Assembly
The filter rails are spring loaded for automatic adjustment
to allow standard size, locally obtainable replacement
filters. The filter rack itself slides to adjust to the required
width needed for bottom or side return. Always insert the
chamfer (angle edged sides) end first.
CHAMFER
END OF
FILTER GOES
INTO FILTER
RACK FIRST
The furnace filter may be secured with filter retaining
brackets for right side return on smaller furnaces. To
replace filters on these furnaces, remove the blower
access door, push back to flex the filter and clear the
filter retaining bracket at the front of the unit. Gently
pull the filter out. After cleaning, replace the filter in
the same manner making sure that filter is secured in
place in both front and back filter retaining brackets of
the unit. Replace blower access door.
Air filters may also be located outside of the furnace
using a SIDE FILTER FRAME.
UPFLOW ONLY
Upflow / Horizontal Furnace Filters
The Upflow/Horizontal furnace, when installed horizon-
tally, 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 14" x 20" x 1" filters in
the 14-1/2" wide furnace cabinets; or two 16" x 20" x 1"
filters in the 17-1/2", 21", and 24-1/2" wide furnace cabi-
nets.
UPFLOW/HORIZONTAL WITH FILTER KIT
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.
Air filters may also be located outside of the furnace using
a remote filter grille. The filter grille could be in a hallway,
wall, or in the ceiling. Check with your dealer for the exact
location of your filter and the method of changing the
filters.
Page 4
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