12 18-CD30D1-12
Installer’s Guide
BOTTOM ENGAGEMENT
t
Bottom Panel
Filter
Rack
Furnace
Cabinet
Side
Filter Rack
Retaining
Screw/Pin
Engagement Hole
For
Bottom Return
Filter Rack
Installation With
Typical Upflow Left Side Return Filter Rack Installation
RETAINING
PIN
(Both Sides)
SPRINGS
SIDE
CUTOUT
FILTER
RACK
RAILS
BOTTOM
PANEL
INSTALLED
Airflow
Typical Upflow Right Side Return Filter Rack Installation
u
ALTERNATE FILTER RACK INSTALLATION FOR
BOTTOM RETURN - BAYRACK960
The following checklist should be used when installing a
bottom return filter on an upflow furnace:
a. Remove the filter.
b. Remove the bottom panel.
c. With the filter removed, the filter rack is
compressed and then inserted into the bottom
of the furnace. The retaining screw/pin on each
side inserts into engagement holes at the bottom
of the furnace cabinet side. See Figure 14.
d. Reinstall the furnace filter in the bottom position
by inserting the chamfer end first into the filter
rack. See Figure 19.
ALTERNATE FILTER RACK INSTALLATION FOR SIDE
RETURN AIR ON UPFLOW FURNACES (LEFT OR
RIGHT) - BAYRACK960
NOTE:
The filter rack installation is not allowed for right side
return on the following models: *UHMB060ACV3V,
*UHMB080ACV3V & *UHMC100ACV4V. See Figure 21
for alternate upflow filter clip/ bracket installation.
The following checklist should be used when installing a
right or left side return filter on an upflow furnace:
a. Remove the filter.
b. Leave the bottom panel in place.
c. Make side cutout by following the directions in the
“Return Air Duct Connections” section on page 10,
d. Compress the filter rack and reinstall in the side
position on 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 13, 15-18.
e. Reinstall the furnace filter in the side position by
inserting the chamfer end first into the filter rack.
RETAINING
PIN
(Both Sides)
SPRINGS
SIDE
CUTOUT
FILTER
RACK
RAILS
BOTTOM
PANEL
INSTALLED
Airflow
y
r
Filter
Rack
Furnace
Cabinet
Side
Filter Rac
k
Retaining
Screw/Pin
Engagement Hole
For
Bottom Return
Filter Rack
Installation With
SIDE ENGAGEMENT
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