Honeywell 69-1866-01 - Manual (Page 7)

MEDIA AIR CLEANER
7 69-1866—01
Fig. 11. Air cleaner dimensions.
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.
Fig. 12. Typical duct transitions.
M13643
RMAC SIZE
IN.
16 X 25
16 X 20
MM
406 X 635
406 X 508
DIM. A
14 7/16
14 7/16
367
367
DIM. B
16 3/16
16 3/16
411
411
23 1/4
18 1/4
DIM. C
591
457
DIM. D
25 1/2
20 1/2
648
521
DIM. C (SEE TABLE)
DIM. D (SEE TABLE)
DIM. B
(SEE TABLE) DIM. A
(SEE TABLE)
1
1
8
(29)
7
8
(22)
5
8
(16)
6
3
4
(171)
7
8
(22)
IN. MM IN. MM IN. MM IN. MM
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 M947B
DUCT SIZE CHANGED GRADUALLY TO PREVENT TURBULENCE.