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Installer's Guide
INSTALLING THE FILTER
The filter may need to be cut to fit the unit depending on the
location of the return air filter.
A score line and the words "CUT HERE" are located on the
end of the filter. If your application requires cutting the
filter, do so as indicted by the score mark.
UNIT
SIZE
BOTTOM
17-1/2"
DO NOT CUT DO NOT CUT
21"
DO NOT CUT CUT ON LINE
24-1/2"
DO NOT CUT CUT ON LINE
TYPICAL DOWNFLOW FURNACE
RETURN AIR FILTER INSTALLATIONS
Two filters are factory supplied for each downflow furnace.
These furnaces require high velocity type air filters. Down-
flow furnace filters must be located outside the furnace
cabinet. Typical installations are shown in Figure 23.
Tables 5 and 6 provide information for installation of the
filter retaining brackets shipped with downflow furnaces.
d
Optional
BAYFLTR206
Door Kit
DOWNFLOW
UPFLOW/HORIZONTAL AND DOWNFLOW/ HORIZONTAL FURNACES
FURNACE SURFACE
SIDES
BACK
TOP
FRONT
VENT
NOTE: CLEARANCE REQUIRED AT TOP OF PLENUM IS 1"
12
RETURN AIR
SIDE
MINIMUM CLEARANCE FROM COMBUSTIBLE MATERIALS FOR
VERTICAL
CLOSET
0"
0"
1"
3"
0"
MODELS
NUMBERS
*DY060R9V3
*DY080R9V3
*DY100R9V4
*DY120R9V5
*First letter may be "A" or "T"
LOCATING FILTER RETAINER BRACKETS IN DUCTWORK
RETURN
CABINET
DIMENSION
DUCT
WIDTH
WIDTH
17-1/2"
16-1/4"
21"
19-3/4"
24-1/2"
23-1/4"
* LOCATION DIMENSION IS FROM END OF DUCT AGAINST THE FURNACE TO THE
SCREW HOLES FOR THE BRACKET.
Optional
BAYFLTR206
Door Kit
TABLE 6
UNIT LOCATION
HORIZONTAL
CLOSET
1"
3"
1"
3"
0"
TABLE 4
CABINET
FILTER
WIDTH
QTY & SIZE
17-1/2"
2 - 14" X 20" X 1"
21"
2 - 16" X 20" X 1"
24-1/2"
2 - 16" X 20" X 1"
TABLE 5
FILTER
DIMENSION
BRACKET
"A"
"B"
LOCATION*
15"
14"
14-3/8"
19-1/2"
14"
13-1/8"
22"
14"
13-5/8"
DOWNFLOW/
HORIZONTAL
HORIZONTAL
ALCOVE / ATTIC
0"
6"
1"
18"
0"
18-CD20D3-18
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