Installation Guide

507962-01Page 20 of 54 Issue 1922
Figure 23. Typical Exhaust Pipe Connections
96G2DFV Maximum Allowable Exhaust Vent Length Using Ventilated Attic or Crawl Space for Intake Air in Feet
Standard Termination at Elevation 0 - 10,000 ft
Number
of 90°
Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2" Pipe 3" Pipe
Capacity Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110 045 070 090 110
1 15
n/a n/a n/a
56 41 24
n/a
85 85 63 28 103 102 83 83
2 10 51 36 19 80 80 58 23 98 97 78 78
3
n/a
46 31 14 75 75 53 18 93 92 73 73
4 41 26 9 70 70 48 13 88 87 68 68
5 36 21 4 65 65 43 8 83 82 63 63
6 31 16
n/a
60 60 38 3 78 77 58 58
7 26 11 55 55 33
n/a
73 72 53 53
8 21 6 50 50 28 68 67 48 48
9 16 1 45 45 23 63 62 43 43
10 11 n/a 40 40 18 58 57 38 38
NOTE: Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length
calculation.
Table 7C.