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036-21584-001 Rev. B (1004)
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.
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
26-1/2
1-3/4
D
1-1/2”GAS
PIPEENTRY
7/8”JUNCTION
BOXHOLE
T-STATWIRING
7/8”K.O.
CONDENSATE
DRAIN7/8” K.O.
OPTIONALRETURNAIR
CUT-OUT(eitherside)
FORUSE WITH
EXTERNALFILTER
FRAME
LEFTSIDE
FRONT
RIGHTSIDE
BOTTOMIMAGE
RETURNEND
TOPIMAGE
SUPPLY END
1-1/2”GAS
PIPEENTRY
7/8”JUNCTION
BOXHOLE
T-STATWIRING
7/8”K.O.
CONDENSATE
DRAIN7/8” K.O.
DIMENSIONS
Models CFM
Cabinet
Size
Cabinet Dimension Air Intake
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 7065605550453525 5
60,000 1-1/2 (3.8) 30 25 20 10 N/A N/A N/A N/A 5
60,000 2 (5.1) 60 55 50 45 40 30 20 10 5
60,000 3 (7.6) 85 80 75 70 65 60 50 40 20
80,000 1-1/2 (3.8) 20 15 N/A N/A N/A N/A N/A N/A 5
80,000 2 (5.1) 60 55 50 45 40 30 20 10 5
80,000 3 (7.6) 85 80 75 70 65 60 50 40 20
100,000 2 (5.1) 25 20 15 N/A N/A N/A N/A N/A 5
100,000 3 (7.6) 85 80 75 70 65 60 50 40 20
120,000 3 (7.6) 75 70 65 60 55 45 35 25 5