ML193UH / Page 12
OPTIONAL ACCESSORY DIMENSIONS - INCHES (MM)
1-1/4
HORIZONTAL (END) FILTER KIT
FRONT VIEW
24−3/4
(629)
A
B
23−1/2
(597)
5/8
(16)
RETURN
AIR
OPENING
SIDE VIEW
AIR FLOW
AIR FILTER
(Furnished)
(32)
5/8
(16)
5/8
(16)
5/8
(16)
(Upflow Applications Only - For use with B, C and D cabinets)
NOTE- Optional Side Return Air Filter Kits are not for use with Optional Return Air Base.
1
Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet.
Minimum unit side return air opening dimensions for units requiring 1800 cfm or more of air (W x H): 23 x 11 in. (584 x 279 mm).
The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown.
Side return air openings must be cut in the field. There are cutting guides stenciled on the cabinet for the side return air
opening. The size of the opening must not extend beyond the markings on the furnace cabinet.
2
To minimize pressure drop, the largest opening height possible, up to 14 in. (356 mm), is preferred.
FURNACE
FRONT
1
Unit side return air
Opening
SIDE VIEW
3-1/4
(83)
1
23 (584)
Overall
(Maximum)
(584)
23
3/4
(19)
1
22-7/16
(570)
Overall
(Maximum)
SIDE RETURN
AIR OPENINGS
(Either Side)
5-5/8
(143)
1
Minimum
11 (279)
2
Maximum
14 (356)
(683)
26-7/8
7-1/4
(184)
IF BASE
IS USED
WITHOUT
IAQ CABINET,
A SINGLE
RETURN AIR
PLENUM
MUST
COVER BOTH
UNIT AND
RETURN
AIR BASE
OPENINGS
INDOOR AIR
QUALITY
CABINET
(PCO, Filter
Cabinet, etc.)
AIR BASE
OPTIONAL
RETURN
CONDENSATE
TRAP
17-1/2 (446) B Width (50W98)
21 (533) C Width (50W99)
24-1/2 (622) D Width (51W00)
Furnace
Cabinet
Width
Catalog
Number
A B
in. mm in. mm
B 89L96 18 457 16-3/4 425
C 89L97 21 533 18-3/4 476
D 89L98 25 635 23-3/4 603
To Next Page
Loading...
Need help?
General