Installation Manual

24 440 01 4501 01
Specifications subject to change without notice.
Table 7 – Air Filter Selection and Duct Sizing -- In. (mm)
FURNACE CASING WIDTH
FILTE R SIZE
FILTER TYPE
SIDE RETURN BOT TOM RETURN
14--- 3/16{ (360) 16 x 25 x 3/4 (406 x 635 x 19) 14 x 25 x 3/4 (356 x 635 x 19) Washable*
17--- 1/2 (445) 16 x 25 x 3/4 (406 x 635 x 19) 16 x 25 x 3/4 (406 x 635 x 19) Washable*
21 (533) 16 x 25 x 3/4 (406 x 635 x 19) 20 x 25 x 3/4 (508 x 635 x 19) Washable*
24--- 1/2 (622) 16 x 25 x 3/4 (406 x 635 x 19) 24 x 25 x 3/4 (610 x 635 x 19) Washable*
* Recommended to maintain air filter face velocity. See Specification for part number .
{ Not all families have these models.
Air Filter Located in Filter Cabinet
FILTER CABINET H EIGHT --- IN (MM) F I LT E R S I Z E --- I N ( M M ) FILTER TYPE
14--- 3/16{ (360) 14 x 25 x 3/4 (356 x 635 x 19) Washable or Media*
16 (406)
(1) 16 x 25 x 3/4* (406 x 635 x 19) or
(1) 16 x 25 x 4--- 5/16 (406 x 635 x 110)
Washable or Media*
20 (508)
(1) 20 x 25 x 3/4* (508 x 635 x 19) or
(1) 20 x 25 x 4--- 5/16 (508 x 635 x 110)
Washable or Media*
24 (610)
(1) 24 x 25 x 3/4*or (610 x 635 x 19) or
(1) 24 x 25 x 4--- 5/16 (610 x 635 x 110)
Washable or Media*
* Filters with a side return---air may have a different filter size. Measure the filter to obtain the correct size.
* Recommended to maintain air filter face velocity. See Specification for part number .
{ Not all families have these models.
PLENUM
OPENING
C
A
B
D
FLOOR
OPENING
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
APPROVED
COIL ASSEMBLY
OR
COIL BOX
FURNACE
SHEET METAL
PLENUM
FLOOR
OPENING
COMBUSTIBLE
FLOORING
A10491
Fig. 29 -- Installation on Combustible Flooring