Page 26
TABLE 13
Maximum Allowable Intake or Exhaust Vent Length in Feet
NOTE - 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.
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total
vent length calculation.
Standard Termination at Elevation 0 - 2000 ft
No. Of
90°
Elbows
1-1/2” Pipe
2” Pipe
2-1/2” Pipe
3” Pipe
Model
Model
Model
Model
030 045 070 090 110 135
030/
045
070 090 110 135
030/,
045
070
090 110 135
030/,
045
070 090 110
1
135
1
25
20
15
n/a n/a
n/a
81
66
44
24
n/a
115
115
93
58
n/a
138 137 118 118
80
2
20
15
10
76
61
39
19
110
110
88
53
133 132 113 113
75
3
15
10
n/a
71
56
34
14
105
105
83
48
128 127 108 108
70
4
10
n/a
66
51
29
n/a
100
100
78
43
123 122 103 103
65
5
n/a
61
46
24
95
95
73
38
118
117
98
98
60
6
56
41
19
90
90
68
33
113
112
93
93
55
7
51
36
14
85
85
63
28
108 107
88
88
50
8
46
31
n/a
80
80
58
23
103 102
83
83
45
9
41
26
75
75
53
18
98
97
78
78
40
10
36
21
70
70
48
13
93
92
73
73
35
1
Contact your local FTC if more than 85ft of venting is needed for the ML196UH135XE60D
Standard Termination at Elevation 20001 - 10,000 ft
No. Of
90°
Elbows
2” Pipe
2-1/2” Pipe
3” Pipe
Model
Model
Model
030,
045
070
090
110
135
030,
045
070
090
110
135
030,
045
070
090
110
1
135
1
81
35
20
n/a
n/a
115
110
67
53
n/a
138
137
118
118
80
2
76
30
15
110
105
62
48
133
132
113
113
75
3
71
25
10
105
100
57
43
128
127
108
108
70
4
66
20
n/a
100
95
52
38
123
122
103
103
65
5
61
15
95
90
47
33
118
117
98
98
60
6
56
10
90
85
42
28
113
112
93
93
55
7
51
n/a
85
80
37
23
108
107
88
88
50
8
46
80
75
32
18
103
102
83
83
45
9
41
75
70
27
13
98
97
78
78
40
10
36
70
65
22
n/a
93
92
73
73
35
1
Contact your local FTC if more than 85ft of venting is needed for the ML196UH135XE60D
Summary of Contents for ML196UH030XE36B
Page 57: ...Page 57...