UPFLOW
ONLY
>
FILTER
ACCESS
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 loca-
tion of your filters.
An upflow/horizontal furnace in horizontal return air fil-
ter application, as shown, features two 16"x 20"x 1" fil-
ters in the 1%1/2", 21" and 24-1/2" wide furnace cabi-
nets.
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 bot-
tom filter brackets. Replace filter access door.
UPFLOW/HORIZONTAL WITH FILTER KIT
Air filters may also be located outside of the furnace us-
ing 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.
User's Information
REQUIRED FILTERS - BOTTOM
CABINET WIDTH FILTERQUANTITY & SIZE
17-1/2" 1 - 17" X 25" X 1"
21" 1-20"X25"X 1"
24-1/2" 1 - 24" X 25" X 1"
REQUIRED FILTERS - SIDE **
CABINET WIDTH FILTER QUANTITY & SIZE
17-1/2" 1 - 17" X 25" X 1"
21" 1-20"X25"X 1"
24-1/2" 1 - 24" X 25" X 1"
**ON UPFLOW5 TONAIRFLOWMODELS, IFTHE
AIRFLOWREQUIREMENTEXCEEDS1800CFM, THESE
MODELSWILLREQUIREFILTERSONBOTHSIDESOR
1SIDEANDTHEBOTTOM, ORJUSTTHEBOTTOM
DOWNFLOW FILTER
UPFLOW (Vertical) FILTER TABLES
Downflow/Horizontal furnaces are factory supplied with
2 standard size permanent type air filters which may be
located remote to the furnace or in the return air duct.
Check with your dealer for the location of your filters.
A downflow/horizontal furnace return air filter applica-
tion, as shown, features two 14" x 20" x 1" filters in the
1%1/2" wide furnace cabinets; or two 16" x 20" x 1" fil-
ters in the 21" and 24-1/2" wide furnace cabinets.
32-5035-05 7
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