Harman® • PF-120 Installation Manual_R1 • 2014 -___ • 03/14
17
3-90-08121i
This Edge Toward
Furnace
Bottom
Solid Side Panel
Knockouts
Tek screw from outside
A. Return Air Box Assembly
The cold air return filter box can be assembled with the filter
frame on either side or the back, provided there is access to
the combustion blower and flue area.
1. Place the bottom on the floor. The edge closest to the
knockouts will be the edge towards the furnace. See
Figure 5.1.
2. Place the desired vertical panel inside the bottom tray and
hold into place with one Tek screw in the bottom middle
hole. (solid panel shown) See Figure 5.1.
Figure 5.1
5
Appliance Set-Up
Figure 5.2
Bottom (same as top)
Top (same as bottom)
Filter Frame
Solid Side Panel
Blower access Panel
Blower access
Panel Cover
Filter
