440 01 4542 00 19
Specifications subject to change without notice.
Table 5 – Opening Dimensions -- In. (mm)
FURNACE
CASING
WIDTH
IN. (mm)
APPLICATION
PLENUM OPENING FLOOR OPENING
B C D
14–3/16{
(360)
Upflow
pplications on Combustible or Noncombustible
Flooring (Subbase not required)
12---11
16
(322)
2 1 --- 5
8
(549)
1 3 --- 5
16
(338)
2 2 --- 1
4
(565)
Downflow
pplications on Noncombustible Flooring
(Subbase not required)
1 2 --- 9
16
(319)
19
(483)
1 3 --- 3
16
(335)
1 9 --- 5
8
(498)
Downflow applications on combustible
looring
(Subbase required)
11---13
16
(284)
19
(483)
1 3 --- 7
16
(341)
2 0 --- 5
8
(600)
Downflow
pplications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
1 2 --- 5
16
(319)
19
(483)
1 3 --- 5
16
(338)
20
(508)
17–1/2
(445)
Upflow
pplications on Combustible or Noncombustible
Flooring (Subbase not required)
16
(406)
2 1 --- 5
8
(549)
1 6 --- 5
8
(422)
2 2 --- 1
4
(565)
Downflow
pplications on Noncombustible Flooring
(Subbase not required)
1 5 --- 7
8
(403)
19
(483)
1 6 --- 1
2
(419)
1 9 --- 5
8
(498)
Downflow applications on combustible
looring
(Subbase required)
1 5 --- 1
8
(384)
19
(483)
1 6 --- 3
4
(425)
2 0 --- 5
8
(600)
Downflow
pplications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
1 5 --- 1
2
(394)
19
(483)
1 6 --- 1
2
(419)
20
(508)
21
(533)
Upflow
pplications on Combustible or Noncombustible
Flooring (Subbase not required)
1 9 --- 1
2
(495)
2 1 --- 5
8
(549)
2 0 --- 1
8
(511)
2 2 --- 1
4
(565)
Downflow
pplications on Noncombustible Flooring
(Subbase not required)
1 9 --- 3
8
(492)
19
(483)
20
(508)
1 9 --- 5
8
(498)
Downflow applications on combustible
looring
(Subbase required)
1 8 --- 5
8
(473)
19
(483)
2 0 --- 1
4
(514)
2 0 --- 5
8
(600)
Downflow
pplications 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
pplications on Combustible or Noncombustible
Flooring (Subbase not required)
23
(584)
2 1 --- 1
8
(537)
2 3 --- 5
8
(600)
2 2 --- 1
4
(565)
Downflow
pplications on Noncombustible Flooring
(Subbase not required)
2 2 --- 7
8
(581)
19
(483)
2 3 --- 1
2
(597)
1 9 --- 5
8
(498)
Downflow applications on Combustible
looring
(Subbase required)
2 2 --- 1
8
(562)
19
(483)
2 3 --- 3
4
(603)
2 0 --- 5
8
(600)
Downflow
pplications on Combustible Flooring with coil
assembly coil or coil box (Subbase not required)
2 2 --- 1
2
(572)
19
(483)
2 3 --- 1
2
(597)
20
(508)
{ Not all families h ave 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
There are no provisions for an internal filter in these furnaces. An
external filter rack is required and is purchased separately. A field
supplied accessory air cleaner may also be used in place of the filter
rack.
For upflow applications, the filter can be installed on either side of
the furnace, the bottom of the furnace or any combination of side
and bottom of the furnace. (See Fig. 21)
For downflow applications, the filter rack (or field supplied
accessory air cleaner) must only be connected to the bottom
opening on the furnace (See Fig. 22).
For horizontal applications, the filter rack (or field supplied
accessory air cleaner) can be connected to the bottom opening on
the furnace. For side return use in the horizontal position, refer to
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