036-21584-002 Rev. A (1205)
2
Unitary Products Group
* Three elbows (two in vent pipe and one in the air intake pipe) are already accounted for and need not be included in the elbow count from the Table above.
NOTE: If installing furnace at altitudes between 2000 - 4500 ft. (609.6 - 1371.6m), intake and vent pipe length must be reduced by 10 ft. (3.05 m). If the installation
requires the maximum allowable intake and vent pipe length, the furnace must be converted for high altitude operation. Refer to the proper high altitude application
instruction for details.
30-7/8
21-1/2
13-7/8
7
11
7/8
23-3/4
7/8
30-1/8
26-1/2
24-5/8
A
40
26-1/2
25-3/8
28-3/8
21-1/2
11
8
26-3/4
1-3/8
1-1/4
C
24-3/8
20
5/8
5/8
B
24-7/16
2
D
1-1/2” GAS
PIPE ENTRY
7/8” JUNCTION
BOX HOLE
T-STAT WIRING
7/8” K.O.
CONDENSATE
DRAIN 7/8” K.O.
OPTIONAL RETURN AIR
CUT-OUT (either side)
FOR USE WITH
EXTERNAL FILTER
FRAME
LEFT SIDE
FRONT
RIGHT SIDE
BOTTOM IMAGE
RETURN END
TOP IMAGE
SUPPLY END
1-1/2” GAS
PIPE ENTRY
7/8” JUNCTION
BOX HOLE
T-STAT WIRING
7/8” K.O.
CONDENSATE
DRAIN 7/8” K.O.
CABINET AND DUCT DIMENSIONS
Models
Nominal
CFM
Cabinet
Size
Cabinet Dimension
A (in.)
B (in.)
C (in.)
D (in.)
PV9A12N040UP11
1200
A
14-1/2
13-1/2
12-1/8
6-1/4
PV9B12N060UP11
1200
B
17-1/2
16-1/4
15-1/8
8-1/2
PV9B12N080UP11
1200
B
17-1/2
16-1/4
15-1/8
8-1/2
PV9C16N080UP11
1600
C
21
19-3/4
18-1/2
8-7/8
PV9C20N100UP11
2000
C
21
19-3/4
18-1/2
8-7/8
PV9D20N120UP11
2000
D
24-1/2
23-1/4
21-7/8
10-5/8
COMBUSTION AIR SUPPLY AND VENT PIPING
MAXIMUM ELBOWS AND VENT LENGTHS
Models
Pipe Size
Inches (cm)
Maximum Number of Elbows*
Minimum
Length
1 2 3 4 5 6 7 8
40,000
1-1/2
30
25
20
10
N/A
N/A
N/A
N/A
5
40,000
2
70
65
60
55
50
45
35
25
5
60,000
1-1/2
30 25 20 10 N/A
N/A
N/A
N/A
5
60,000
2
60 55 50 45 40 30 20 10
5
60,000
3
85 80 75 70 65 60 50 40
20
80,000
1-1/2
20 15 N/A N/A N/A N/A N/A N/A
5
80,000
2
60 55 50 45 40 30 20 10
5
80,000
3
85 80 75 70 65 60 50 40
20
100,000
2
25 20 15 N/A N/A N/A N/A N/A
5
100,000
3
85 80 75 70 65 60 50 40
20
120,000
3
75 70 65 60 55 45 35 25
5
