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3
6
4
(171)
Determine Sheet-Metal Requirements
The media air cleaner is adaptable to all new or existing for
forced air heating and cooling systems used in residential
applications. Some applications may require transitions,
turning vanes, or duct offsets for proper installation of the
media air cleaner.
1. Transitions
• Transitions are needed when the duct is a different
size than the air cleaner cabinet.
• Use gradual transitions to reduce air turbulence and
increase efficiency. See Fig. 12.
• Use no more than 20 degrees (about 4 in. per
running foot) of expansion on each side of the
transition fitting.
1
1
(29)
8
DIM. A
(SEE TABLE)
7
5
8
8
(22)
(16)
RMAC SIZE
IN.
MM
16 X 25
406 X 635
14 7/16
406 X 508
16 X 20
14 7/16
Fig. 11. Air cleaner dimensions.
DIM. C (SEE TABLE)
DIM. D (SEE TABLE)
DIM. A
DIM. B
IN.
MM
IN.
MM
367
16 3/16
411
367
16 3/16
411
DUCT SIZE CHANGED GRADUALLY TO PREVENT TURBULENCE.
20 DEGREE EXPANSION PER SIDE PER
FITTING (4 IN. PER RUNNING FOOT
[100 MM PER 300 LINEAR MM])
RETURN AIR
DUCT
TRANSITION FITTING
MEDIA AIR CLEANER CABINET
Fig. 12. Typical duct transitions.
7
MEDIA AIR CLEANER
DIM. B
(SEE TABLE)
7
8
(22)
DIM. C
DIM. D
IN.
MM
IN.
MM
23 1/4
591
25 1/2
648
18 1/4
457
20 1/2
521
M13643
M947B
69-1866—01
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