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PREINSTALLATION
LOCATING
THE AiR FILTER
Your air filter must be mounted in the return air duct of a central
forced-air system, on the air entering side of your furnace. (See
Figure 3 for example).
Select a location that meets the following:
1. The face of the filter will be at a right angle to the air
stream.
2. Allow 25" of clearance in front of the air filter compartment
door to permit removal of filters.
3. The air filter is not to be placed in the discharge of either the
heating or cooling unit.
4. IMPORTANT:
If atomizing spray type humidifier is used, it
must be installed downstream from the air filter.
If furnace
opening
cannot be enlarged to required
size, a
transition
sheet metal section must be used. Transition must
be planned for each job. Reduction should not be more than
4 inches per linear foot, approximately
20 angular degrees
(Figure 3).
See figure 4 for complete compartment
dimensions.
/
FURNACE J
OPENING
AIR CLEANER __t-
OPENING
/
TRANSITION
SECTION i
(IF NEEDED)
NOT TO EXCEED 20 °
X--AIR CLEANER
LOCATING THE AIR FILTER
AN AIR
FILTER
MUST
BE MOUNTED
IN THE RETURN
AIR DUCT
OF A CENTRAL
FORCED-AIR
SYSTEM,
ON THE AIR
ENTERING
SIDE
OF FURNACE.
Figure 3
AIR FLOW
c/1
Figure 4
Model NO.
CFM RATING
A
LENGTH
19-13/16
24-13/16
19-13/16
24-13/16
B
HEIGHT
18-5/16
18-5/16
22-5/16
22-5/16
C
WIDTH
5-7/16
5-7/16
5-7/16
5-7/16
ACM1000M-XXX
600 TO 1200
ACM 1400M-XXX
1000 TO 1600
ACM1600M-XXX
1200 TO 1800
ACM2000M-XXX
1800 TO 2200
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