i Furnace | Filter |
Rack | |
Cabinet |
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Side |
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Filter Rack
Retaining
Screw/Pin
Engagement Hole
For Filter Rack
Installation With
Bottom Return
a
Installer’s Guide
REAR
SIDE | |
- | OUT |
CUT |
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ALTERNATE FILTER
CLIPS LOCATION
o
Furnace
Cabinet 
Side
Engagement Hole
For Filter Rack
Installation With
Bottom Return
Filter Rack
Retaining
Screw/Pin Filter
Rack
Bottom Panel
s
Airflow
Optional door kit
BAYFLTR206
RETURN AIR FILTERS FOR UPFLOW FURNACE IN HORIZONTAL CONFIGURATION
p
BLOWER
DECK
Furnace
Cabinet 
Side
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Filter Rack | Filter |
Retaining | Rack |
Screw/Pin | Assembly |
When the Upflow Furnace is installed in the horizontal configuration, the return air filters must be installed exterior to the furnace cabinet. Remote filter grilles may be used for homeowner convenience or the filters may be installed in the duct work upstream of the fur- nace. See Figure 17.
ALTERNATE UPFLOW FILTER CLIP/ BRACKET INSTAL- LATION - KIT09224
1.Determine the location to be used. The furnace cabinet has dimples for location of the alternate fur- nace clips (Side return only).
2.Install the clips in front and rear of the desired loca- tion using the screws provided. The filter clip with the leaf spring mounts in the rear of the cabinet.
TYPICAL DOWNFLOW FURNACE RETURN AIR FILTER INSTALLATIONS
These furnaces require high velocity type air filters. Downflow furnace filters must be located outside the furnace cabinet. Typical installations are shown in Fig- ure 22. Tables 5 and 6 provide information for installa- tion of the filter retaining brackets shipped with down- flow furnaces.
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