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TABLE 1—OPENING DIMENSIONS (IN.)
FURNACE
CASING
WIDTH
APPLICATION
PLENUM OPENING FLOOR OPENING
ABCD
17-1/2
Upflow Applications 16 24-1/8 16-5/8 24-3/4
Downflow Applications on Non-Combustible Flooring 15-7/8 19 16-1/2 19-5/8
Downflow Applications on Combustible Flooring Using KGASB Subbase
Furnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box
15-1/8 19 16-3/4 20-3/8
Downflow Applications on Combustible Flooring NOT Using KGASB Subbase
Furnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box
15-1/2 19 16-1/2 20
21
Upflow Applications 19-1/2 24-1/8 20-1/8 24-3/4
Downflow Applications on Non-Combustible Flooring 19-3/8 19 20 19-5/8
Downflow Applications on Combustible Flooring Using KGASB Subbase
Furnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box
18-5/8 19 20-1/4 20-3/8
Downflow Applications on Combustible Flooring NOT Using KGASB Subbase
Furnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box
19 19 20 20
24-1/2
Upflow Applications 23 24-1/8 23-5/8 24-3/4
Downflow Applications on Non-Combustible Flooring 22-7/8 19 23-1/2 19-5/8
Downflow Applications on Combustible Flooring Using KGASB Subbase
Furnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box
22-1/8 19 23-3/4 20-3/8
Downflow Applications on Combustible Flooring NOT Using KGASB Subbase
Furnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box
22-1/2 19 23-1/2 20
Fig. 20—Furnace, Plenum, and Subbase
Installed on a Combustible Floor
A96285
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
FLOOR
OPENING
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING
Fig. 19—Floor and Plenum Opening Dimensions
A96283
PLENUM
OPENING
C
A
B
D
FLOOR
OPENING
Fig. 21—Furnace, Plenum, and Coil
Assembly or Coil Box Installed
on a Combustible Floor
A96284
CD5 OR CK5
COIL ASSEMBLY
OR KCAKC
COIL BOX
FURNACE
SHEET METAL
PLENUM
FLOOR
OPENING
COMBUSTIBLE
FLOORING
—15—