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F
ILTER
R
EMOVAL
Depending on the installation, differing filter arrangements
can be applied. Filters can be installed in the central return
register, the bottom of the blower compartment, or a side
panel external filter rack kit. A media air filter or electronic
air cleaner can be used as an alternate filter. The filter
sizes given in the Specifications Sheet must be followed to
ensure proper unit performance. Refer to the following for
removal and installation of filters.
To remove a filter from the bottom of the blower compart-
ment:
1. Turn OFF electrical power to furnace.
2. Remove blower compartment door.
3. Push back and up on the wire filter retainer to release
it from under the front lip of the furnace basepan.
4. Slide filter forward and out.
5. Replace filter by reversing the procedure for removal.
To remove internal filter(s) from the retaining rails on the
side(s) of the blower compartment in an upright installa-
tion:
1. Turn OFF electrical power to furnace.
2. Remove the blower compartment door.
3. Grasp the lower portion of the filter and lift up.
4. Angle the filter towards the blower until the filter is clear
of the bottom rail.
5. Lower the filter down and pull outward.
6. Replace the filter by reversing the procedure for re-
moval.
To remove filters from an external filter rack in an upright
installation, follow the directions provided with external
filter rack kit.
Using a vacuum cleaner, clean out the blower area, exter-
nal filter rack area, and the adjacent area of the return air
duct.
Clean, wash and dry a permanent filter. When using a
metal filter, both sides should be sprayed with a dust
adhesive as recommended on adhesive container. Spray
adhesives for use with permanent metal filters can be
found at some hardware stores. BE SURE AIRFLOW
DIRECTION ARROW POINTS TOWARDS THE BLOWER.
Maintenance
Front of Furnace
Blower
Grab Here
And Lift
F
ilt
e
r
Front of Furnace
Blower
a. Lift filter above bottom b. Tilt filter to clear rail.
rail
Front of Furnace
Blower
Front of Furnace
Blower
c. Lower filter below top d. Pull filter out.
rail.
Filter Removal Procedure