30
The filter is designed for high velocity heating and cool-
ing applications. Filters must be inspected, cleaned or
changed every two months or as required. It is the
owner's responsibility to keep air filters clean.
NOTE:
Dirty filters are the most common cause of inadequate
heating or cooling performance.
To remove the filter contained in the furnace retaining
rails, disconnect electrical power to the furnace and
remove the lower door by turning the door latches 1/4
turn.
Grasp the lower portion of the filter, lift up to disengage
it from the lower railing, move towards blower, drop
filter down. Pull filter outward. (Figure 33)
Side Air Return
1. Lift filter above bottom
2. Tilt filter to clear
rail. rail.
Front of Furnace
Blower
Grab Here
And Lift
Fi
lter
Front of Furnace
Blower
3. Lower filter below top
4. Pull filter out.
rail.
Front of Furnace
Blower
Front of Furnace
Blower
Figure 33
Filter Removal
Bottom Air Return
The filter is held in place by a sheet metal retainer strap
(Figure 34). To change and clean the filter, slide one
end of the retainer towards the front and remove filter.
Figure 34
Filter Retainer
The filter must be of the permanent washable type with
dimensions of 16 x 25 x 1. (Side return(s) only.)
Use a vacuum cleaner to clean out the blower area and
the adjacent area of the return air duct.
Clean, wash and dry the permanent filter. Both sides
should then be sprayed with a dust adhesive as recom-
mended on adhesive container. Reinstall filter by plac-
ing it into the furnace along the side of the blower.
Engage filter in the top rail, move towards side of
furnace and drop it into the bottom rail. BE SURE
AIRFLOW DIRECTION ARROW POINTS TOWARDS
BLOWER.
When the filter is located in the bottom of the furnace on
a bottom return system the filter is held in its location by
a sheet metal retainer strap. To change or clean the
filter, merely slide one end of the retainer towards the
front and remove the filter.
Blower Motor
The air circulating blower motor bearings are perma-
nently lubricated. No further lubrication is required.
Induced Draft Blower Motor
The induced draft blower motor bearings are perma-
nently lubricated. No further lubrication is required.