Filter
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5PF100
Filter Box
(Cold Air Return)
This Edge Toward
Furnace
Assembling Filter Box
The cold air return filter box can be assembled
with the filter frame on either side or the back, pro-
vided there is access to the combustion blower and flue
area.
It is not recomended that the filter frame be installed
on the same side as the ash door due to the need to
access the combustion blower, filter, and flue pipe for
service.
1. Place the bottom on the floor. The edge closest
to the knockouts will be the edge towards the furnace.
See Fig. 4.
2. Place the desired vertical panel inside the bot-
tom tray and hold into place with one Tek screw in the
bottom middle hole. (solid panel shown) See Fig 4.
Bottom
Solid Side Panel
Fig. 4
Knockouts
Tek screw from outside
Bottom (same as
top)
Top (same as bottom)
Filter Frame Panel
Solid Side Panel
Blower access Panel
Blower access
Panel Cover
Fig. 3
Switch
NOTE:Read and follow all of the vent pipe
manufacturers’ instructions on the proper
installation and support of the vent pipe. Adhere to
all clearances.
Assembly