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TYPICAL MOUNTING POSITIONS
BASEMENT FURNACE
(LOWBOY) (Figure 6)
Cleaner is mounted hori-
zontally in return plenum,
just above furnace.
COUNTERFLOW
FURNACE (Figure 7)
Cleaner is mounted horizon-
tally in return duct or plenum,
just above furnace.
HIGHBOY FURNACE
(Figure 8)
Side installation. Cleaner
is mounted vertically,
where return air enters
side inlet of furnace.
OFFSET INSTALLATION
(Figure 10)
Typical use of duct offset to match air filter opening.
If duct connection to furnace allows less than nine
inches for mounting the air cleaner, shorten the
lateral trunk, or attach an offset fitting to the elbow.
HORIZONTAL FURNACE
(Figure 11)
Cleaner is mounted vertically
in the return duct near furnace.
Air Flow
Rear View
Figure 6
Air Flow
Rear View
Figure 7
Air Flow
Figure 8
Air Flow
Figure 9
At Least
9 Inches
Less than
7 Inches
Offset
Figure 10
Air Flow
Figure 11
HIGHBOY FURNACE
(Figure 9)
Installation beneath furnace.
Cleaner mounts horizontally,
where return air enters from
below. Raise furnace and in-
stall beneath base.