440 01 6201 00B
19
Specifications subject to change without notice.
Table 5 – Opening Dimensions -- In. (mm)
FURNACE
CASING
WIDTH
IN. (mm)
APPLICATION
PLENUM OPENING
FLOOR OPENING
A
B
C
D
14–3/16
{
(360)
Upflow Applications on Combustible or Noncombustible
Flooring (Subbase not required)
12---11/16
(322)
21---5/8
(549)
13---5/16
(338)
22---1/4
(565)
Downflow Applications on Noncombustible Flooring
(Subbase not required)
12---9/16
(319)
19
(483)
13---3/16
(335)
19---5/8
(498)
Downflow applications on combustible flooring
(Subbase required)
11---13/16
(284)
19
(483)
13---7/16
(341)
20---5/8
(600)
Downflow Applications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
12---5/16
(319)
19
(483)
13---5/16
(338)
20
(508)
17–1/2
(445)
Upflow Applications on Combustible or Noncombustible
Flooring (Subbase not required)
16
(406)
21---5/8
(549)
16---5/8
(422)
22---1/4
(565)
Downflow Applications on Noncombustible Flooring
(Subbase not required)
15---7/8
(403)
19
(483)
16---1/2
(419)
19---5/8
(498)
Downflow applications on combustible flooring
(Subbase required)
15---1/8
(384)
19
(483)
16---3/4
(425)
20---5/8
(600)
Downflow Applications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
15---1/2
(394)
19
(483)
16---1/2
(419)
20
(508)
21
(533)
Upflow Applications on Combustible or Noncombustible
Flooring (Subbase not required)
19---1/2
(495)
21---5/8
(549)
20---1/8
(511)
22---1/4
(565)
Downflow Applications on Noncombustible Flooring
(Subbase not required)
19---3/8
(492)
19
(483)
20
(508)
19---5/8
(498)
Downflow applications on combustible flooring
(Subbase required)
18---5/8
(473)
19
(483)
20---1/4
(514)
20---5/8
(600)
Downflow Applications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
19
(483)
19
(483)
20
(508)
20
(508)
24---1/2
(622)
Upflow Applications on Combustible or Noncombustible
Flooring (Subbase not required)
23
(584)
21---1/8
(537)
23---5/8
(600)
22---1/4
(565)
Downflow Applications on Noncombustible Flooring
(Subbase not required)
22---7/8
(581)
19
(483)
23---1/2
(597)
19---5/8
(498)
Downflow applications on Combustible flooring
(Subbase required)
22---1/8
(562)
19
(483)
23---3/4
(603)
20---5/8
(600)
Downflow Applications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
22---1/2
(572)
19
(483)
23---1/2
(597)
20
(508)
{
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. 25 -- Installation on Combustible Flooring
Filter Arrangement
FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to follow this warning could result in fire, personal
injury or death.
Never operate a furnace without a filter or filtration device
installed. Never operate a furnace with filter or filtration
device access doors removed.
!
WARNING
Filter and Return Duct Sizing
Pressure drop must be taken into account when sizing filters, filter
racks, IAQ devices, and associated system ductwork. See Table 6
for a comparison of Pressure Drop (initial/clean resistance to
airflow) versus Airflow for a variety of filter media types and sizes.
These are representative numbers. Consult the filter or IAQ device
manufacturers’ specification sheet for performance data for a
particular filter media or IAQ device.