18-CD29D1-11
11
Installer’s Guide
VIEW
PRE-DRILL
Two clearance holes with a
3/16” drill at dimple locations
(one per side)
Blower Deck
Engagement
Hole
NOTE: The narrow 14.5" width furnace cabinet prevents
use of the filter rack for right side return. Pre-drill clear-
ance holes and then attach filter clips with the screws
provided. The filter clip with the leaf spring mounts in the
rear of the cabinet
OPTIONAL FILTER RACK INSTALLATION FOR BOTTOM
RETURN - BAYRACK960
The following checklist should be used when installing as a
bottom return filter on an upflow furnace:
a. Remove the filter.
b. Remove the bottom panel.
c. Pre-drill two engagement holes with 3/16" drill at
dimple locations. See Figure 14.
d. 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 engage-
ment holes at the bottom of the furnace cabinet side.
See Figure 15.
e. Reinstall the furnace filter in the bottom position by
inserting the chamfer end first into the filter rack.
NOTE: Remove the bottom front channel to install the
filter rack in the 14-1/2" width cabinet furnaces.
Filter
Rack
Furnace
Cabinet
Side
Filter Rack
Retaining
Screw/Pin
Engagement Hole
For
Bottom Return
(Pre-drill 3/16” diameter
clearance holes)
Filter Rack
Installation With
r
t
Optional Filter Rack Accessory Kit
e
Airflow
TABLE 5
UPFLOW FURNACE RETURN AIR FILTERS
CABINET
WIDTH
QTY*
CABINET
BOTTOM FILTER
CABINET
SIDE FILTER
14-1/2"
1
14" X 25" X 1"
17-1/2" X 25" X 1"
17-1/2"
1
17" X 25" X 1"
17-1/2" X 25" X 1"
21"
1
20" X 25" X 1"
17-1/2" X 25" X 1"
24-1/2"
1
24" X 25" X 1"
17-1/2" X 25" X 1"
**NOTE: For upflow 5 ton airflow models where the airflow
requirement exceeds 1800 CFM - Models will require return air
openings and filters on: (1) both sides, or (2) one side and the
bottom, or (3) just on the bottom
BAYRACK960A
BOTTOM FILTER RACK INSTALLATION
Airflow
w