Furnace User Manual
13
Ta ble 4 – Opening dimensions (In.)
FURNACE
CASING
WIDTH
APPLICATION
PLENUM OPENING FLOOR OPENING
A B C D
14–3/16
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
12--- 11/16 21--- 5/8 13--- 5/16 22--- 1/4
Downflow Applications on Noncombustible Flooring (KGASB
subbase not required)
12--- 9/16 19 13---3/16 19 ---5/8
Downflow applications on combustible flooring
(KGASB subbase required)
11--- 13/16 19 13---7/16 20 ---5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box
(KGASB subbase not required)
12--- 5/16 19 13---5/16 20
17–1/2
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
16 21--- 5/8 16---5/8 22--- 1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
15--- 7/8 19 16--- 1/2 19---5/8
Downflow applications on combustible flooring
(KGASB subbase required)
15--- 1/8 19 16--- 3/4 20---5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box
(KGASB subbase not required)
15--- 1/2 19 16--- 1/2 20
21
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
19--- 1/2 21 ---5/8 20--- 1/8 22---1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
19--- 3/8 19 20 19---5/8
Downflow applications on combustible flooring
(KGASB subbase required)
18--- 5/8 19 20--- 1/4 20---5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box
(KGASB subbase not required)
19 19 20 20
24--- 1/2
Upflow Applications on Combustible or Noncombustible
Flooring (KGASB subbase not required)
23 21--- 1/8 23---5/8 22--- 1/4
Downflow Applications on Noncombustible Flooring
(KGASB subbase not required)
22--- 7/8 19 23--- 1/2 19---5/8
Downflow applications on Combustible flooring
(KGASB subbase required)
22--- 1/8 19 23--- 3/4 20---5/8
Downflow Applications on Combustible Flooring with CD5 or
CK5 Coil Assembly or KCAKC coil box
(KGASB subbase not required)
22--- 1/2 19 23--- 1/2 20
UPFLO
W OWNFLOW
HORIZONTAL
YES
NOT
RECOMMENDED
YES
YES
YES
120û
MIN
YES
120û
MIN
YES
120û
MIN
90û
90û
NOT
RECOMMENDED
NOT
RECOMMENDE
D
D
A02329
Fig. 14 -- Duct Flanges
312A