6
General Information
The air cleaner can be in any position, except with the access door facing down. The figures below show the various
positions the air cleaner can be mounted.
SHEET METAL
TRANSITIONS
AIR FLOW
AIR CLEANER
AIR FLOW
AIR CLEANER
AIR FLOW
BEFORE
AIR FLOW
AFTER
AIR CLEANER
AIR FLOW
AIR CLEANER
AIR FLOW
AIR CLEANER
SHEET METAL
TRANSITIONS
AIR FLOW
AIR CLEANER
BLOWER DOOR
SHEET METAL
TRANSITIONS
Figure 3
BASEMENT FURNACE
(LOW BOY)
Mounted horizontally in return
plenum just above the furnace.
Figure 4
COUNTERFLOW FURNACE
Mounted horizontally in return duct
or plenum, just above the furnace.
Figure 5
SPACE SAVER FURNACE
(HIGHBOY)
Side installation. Cleaner is
mounted vertically, where re-
turn air enters side inlet of
furnace.
Figure 6
OFFSET INSTALLATION
Mounted between the duct and
furnace. If there is less than 7-
in. between the duct and the
furnace, move the return air
drop then install the cleaner
between them.
Figure 7
SPACE SAVER (HIGHBOY)
Mounted horizontally beneath the
furnace. Raise furnace using a
suitable wood structure and install
cleaner.
Figure 8
HORIZONTAL FURNACE
Mounted vertically in the return
duct as close to the furnace as
possible.