Carrier 58MCB120 Product Data page 8

FURNACE
CASING
WIDTH FURNACE IN DOWNFLOW APPLICATION
Furnace with or without Cased Coil
17-1/2 Assembly or KCAKC Coil Box
Furnace with or without Cased Coil
21 Assembly or KCAKC Coil Box
Furnace with or without Cased Coil
24-1/2 Assembly or KCAKC Coil Box
* The plenum should be constructed 1/4 in. smaller in width and depth than the plenum dimensions shown above.
A
FACTORY-SUPPLIED
FIELD-INSTALLED
INSULATION
Combustion-Air Pipe for Non-Direct Vent (1-Pipe) Application (Sizes 040 through 120 Only)
FIELD-SUPPLIED
2-IN. DIAMETER
PVC 90 ELBOW
COMBUSTION-AIR DISC
(FACTORY-SUPPLIED IN
LOOSE PARTS BAG)
8
DOWNFLOW SUBBASE — DIMENSIONS (In.)
" TYP
1
1 /
4
PLENUM
OPENING
C
Assembled
FIELD-SUPPLIED
2-IN. DIAMETER
PVC PIPE
A
PLENUM OPENING* FLOOR OPENING
A B C
15-1/8 19 16-3/4
18-5/8 19 20-1/4
22-1/8 19 23-3/4
LOCATING
TAB
LOCATING
TAB
A97427
LENGTH OF STRAIGHT
PIPE PORTION OF COMBUSTION
AIR INLET PIPE ASSEMBLY (IN.)
CASING WIDTH
17-1/2
21
24-1/2
A96211
HOLE NO.
FOR WIDTH
D ADJUSTMENT
20-3/8 3
20-3/8 2
20-3/8 1
B
4
3
D
2
1
1
2
3
4
Disassembled
A
8-1/2 ± 1/2
10-1/2 ± 1/2
12 ± 1/2
A88207