Payne PG9MAA Specification page 9

MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITHOUT INSULATION
IN WINTER DESIGN TEMPERATURE AMBIENT FOR DIRECT-VENT APPLICATIONS*
WINTER DESIGN MAXIMUM PIPE
UNIT TEMPERATURE DIAMETER WITHOUT
SIZE (°F) (IN.) INSULATION
20 I-I/2 51
0 I-I/2 28
-20 I-I/2 I6
040
20 2 45
0 2 22
-20 2 I 0
20 2 65
060 0 2 35
-20 2 20
20 2 55
0 2 48
-20 2 30
080
20 2-I/2 70
0 2-I/2 47
-20 2-I/2 28
20 2-I/2 40
0 2-I/2 40
-20 2-I/2 38
I00
20 3 70
0 3 50
-20 3 28
20 3 70
0 3 61
-20 3 37
I20
20 4 70
0 4 48
-20 4 23
20 3 60
0 3 60
-20 3 44
I40
20 4 70
0 4 57
-20 4 30
* Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed
able pipe length as specified in Maximum Allowable Pipe Length table on pages 6 and 7.
1 insulation thickness based on R value of 3.5 per in.
WITH 3/8-1N. OR
THICKER INSULATIONt
70
70
70
70
70
58
70
70
70
55
55
55
70
70
70
40
40
40
70
70
70
70
70
70
70
70
70
60
60
60
70
70
70
the total al!ow-
m9m