18-CD19D6-32
13
Installer’s Guide
Filter
Rack
Assembly
Furnace
Blower
Deck
Filter Rack
Retaining
Screw/Pin
Engagement Hole
For
Return
Filter Rack
Installation With
Side
Furnace
Cabinet
Side
BLOWER
DECK
i
BOTTOM ENGAGEMENT
Bottom Panel
Filter
Rack
Furnace
Cabinet
Side
Filter Rack
Retaining
Screw/Pin
Engagement Hole
For
Bottom Return
Filter Rack
Installation With
u
OPTIONAL FILTER RACK INSTALLATION FOR SIDE
RETURN AIR ON UPFLOW FURNACES (Left or Right)
If side air return is desired, the following instructions should
be used:
a. Open or remove the blower door.
b. Leave the bottom panel in place. (Some models
require field supplied bottom panels.)
c. After the side cutout is made following the directions
in the “Return Air Duct Connections” section on
pages 8 and 9; compress the filter rack and reinstall in
the side of the furnace. Confirm that the upper
retaining pin/screw locks into the engagement hole in
the blower deck and the lower pin/screw rests against
the side of the bottom panel. See Figures 14, 15, &
17-20.
d. Install the furnace filter on the side. See Figures 14,
15, & 17-20.
Airflow
a
Typical Horizontal Filter Installation
TABLE 5
Cabinet Width Left Side Bottom
Right Side
14.5
X
1
X
2
Use Alternate Filter Clips Only
17.5
X
X
X
21
X
X
X
24.5
X
X
X
1. UD060C/R936K0 has 10x7 blower which requires use of alternate
filter clips for left side filter. "K1" and later use the filter rack.
2. Remove bottom front channel to install or reposition filter rack.
X
- All Models
RETAINING
PIN
(Both Sides)
SPRINGS
SIDE
CUTOUT
FILTER
RACK
RAILS
BOTTOM
PANEL
INSTALLED
Airflo
w
Airflow
Typical Upflow Left Side Return Filter Rack Installation
o
RETAINING
PIN
(Both Sides)
SPRINGS
SIDE
CUTOUT
FILTER
RACK
RAILS
BOTTOM
PANEL
INSTALLED
Airflo
w
Airf
low
p
Typical Upflow Right Side Return Filter Rack Installation
Optional door kit
BAYFLTR206
