507715-01
Page 19 of 61
Issue 1716
Table 5A.
GUH92A Maximum Allowable Intake or Exhaust Vent Length in Feet
Standard Termination at Elevation 0 - 10,000 ft
Number of
90° Elbows
Used
2" Pipe
2-1/2" Pipe
3" Pipe
Capacity
Capacity
Capacity
045
070
090
110
135
045
070
090
110
135
045
070
090
110
135
1
76
61
39
19
n/a
110
95
63
38
n/a
132
132
113
113
109
2
71
56
34
14
105
90
58
33
127
127
108
108
104
3
66
51
29
9
100
85
53
28
122
122
103
103
99
4
61
46
24
n/a
95
80
48
23
117
117
98
98
94
5
56
41
19
90
75
43
18
112
112
93
93
89
6
51
36
14
85
70
38
13
107
107
88
88
84
7
46
31
9
80
65
33
8
102
102
83
83
79
8
41
26
n/a
75
60
28
n/a
97
97
78
78
74
9
36
21
70
55
23
92
92
73
73
69
10
31
16
65
50
18
87
87
68
68
64
Concentric Termination Elevation 0 - 10,000 ft
Number of
90° Elbows
Used
2" Pipe
2-1/2" Pipe
3" Pipe
Capacity
Capacity
Capacity
045
070
090
110
135
045
070
090
110
135
045
070
090
110
135
1
68
53
37
17
n/a
100
85
59
34
n/a
116
116
109
109
100
2
63
48
32
12
95
80
54
29
111
111
104
104
95
3
58
43
27
7
90
75
49
24
106
106
99
99
90
4
53
38
22
n/a
85
70
44
19
101
101
94
94
85
5
48
33
17
80
65
39
14
96
96
89
89
80
6
43
28
12
75
60
34
9
91
91
84
84
75
7
38
23
7
70
55
29
n/a
86
86
79
79
70
8
33
18
n/a
65
50
24
81
81
74
74
65
9
28
13
60
45
19
76
76
69
69
60
10
23
8
55
40
14
71
71
64
64
55
*Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and
Exhaust must be same pipe size.
