International comfort products R9MSB0801716 Installation Instructions Manual page 26

INSTALLATION INSTRUCTIONS
FURNACE
CASING
WIDTH
IN. (mm)
Upflow Applications on Combustible or Noncombustible
Downflow Applications on Noncombustible Flooring
14–3/16{
(360)
Downflow applications on combustible flooring
Downflow Applications on Combustible Flooring with Coil
Assembly or coil box (subbase not required)
Upflow Applications on Combustible or Noncombustible
Downflow Applications on Noncombustible Flooring
17–1/2
(445)
Downflow applications on combustible flooring
Downflow Applications on Combustible Flooring with Coil
Assembly or coil box (subbase not required)
Upflow Applications on Combustible or Noncombustible
Downflow Applications on Noncombustible Flooring
21
(533)
Downflow applications on combustible flooring
Downflow Applications on Combustible Flooring with Coil
Assembly or coil box (subbase not required)
Upflow Applications on Combustible or Noncombustible
Downflow Applications on Noncombustible Flooring
24−1/2
(622)
Downflow applications on Combustible flooring
Downflow Applications on Combustible Flooring with Coil
Assembly or coil box (subbase not required)
{ Not all families have these models.
PERFORATED
DISCHARGE DUCT
FLANGE
26
Table 8 – Opening Dimensions − In. (mm)
APPLICATION
Flooring (subbase not required)
(subbase not required)
(subbase required)
Flooring (subbase not required)
(subbase not required)
(subbase required)
Flooring (subbase not required)
(subbase not required)
(subbase required)
Flooring (subbase not required)
(subbase not required)
(subbase required)
UPFLOW
90°
120°
MIN
Figure 22 − Duct Flanges
Specifications subject to change without notice.
PLENUM OPENING
A
12−11/16
(322)
12−9/16
(319)
11−13/16
(284)
12−5/16
(319)
16
(406)
15−7/8
(403)
15−1/8
(384)
15−1/2
(394)
19−1/2
(495)
19−3/8
(492)
18−5/8
(473)
19
(483)
23
(584)
22−7/8
(581)
22−1/8
(562)
22−1/2
(572)
DOWNFLOW
YES
YES
120°
MIN
NO
Gas Furnace: R9MSB
FLOOR OPENING
B C
21−5/8 13−5/16 22−1/4
(549) (338)
19 13−3/16 19−5/8
(483) (335)
19 13−7/16 20−5/8
(483) (341)
19 13−5/16
(483) (338)
21−5/8 16−5/8 22−1/4
(549) (422)
19 16−1/2 19−5/8
(483) (419)
19 16−3/4 20−5/8
(483) (425)
19 16−1/2
(483) (419)
21−5/8 20−1/8 22−1/4
(549) (511)
19 20 19−5/8
(483) (508)
19 20−1/4 20−5/8
(483) (514)
19 20
(483) (508)
21−1/8 23−5/8 22−1/4
(537) (600)
19 23−1/2 19−5/8
(483) (597)
19 23−3/4 20−5/8
(483) (603)
19 23−1/2
(483) (597)
HORIZONTAL
90°
YES
YES
120°
MIN
NO
440 01 6001 05
D
(565)
(498)
(600)
20
(508)
(565)
(498)
(600)
20
(508)
(565)
(498)
(600)
20
(508)
(565)
(498)
(600)
20
(508)
YES
YES
NO
A10493