Filter
Top Products
Page 14
TABLE 7
Maximum Allowable Intake or Exhaust Vent Length in Feet
*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.
Standard Termination at Elevation 0 − 4500’
Number Of
90° Elbows
Used
2" Pipe 2−1/2" Pipe 3" Pipe
Model Model Model
070 090 110 070 090 110 070 090 110
1 91 69 14 140 93 43 162 143 118
2 86 64 9 135 88 38 157 138 113
3 81 59
n/a
130 83 33 152 133 108
4 76 54 125 78 28 147 128 103
5 71 49 120 73 23 142 123 98
6 66 44 115 68 18 137 118 93
7 61 39 110 63 13 132 113 88
8 56 34 105 58
n/a
127 108 83
9 51 29 100 53 122 103 78
10 46 24 95 48 117 98 73
Standard Termination Elevation 4501’ − 7500’
Number Of
90° Elbows
Used
2" Pipe 2−1/2" Pipe 3" Pipe
Model Model Model
070 090 110 070 090 110 070 090 110
1 66 69 14 115 93 43 137 143 118
2 61 64 9 110 88 38 132 138 113
3 56 59
n/a
105 83 33 127 133 108
4 51 54 100 78 28 122 128 103
5 46 49 95 73 23 117 123 98
6 41 44 90 68 18 112 118 93
7 36 39 85 63 13 107 113 88
8 31 34 80 58
n/a
102 108 83
9 26 29 75 53 97 103 78
10 21 24 70 48 92 98 73
Standard Terminatiuon at Elevation 7501’ − 10,000’’
Number Of
90° Elbows
Used
2" Pipe 2−1/2" Pipe 3" Pipe
Model Model Model
070 090 110 070 090 110 070 090 110
1 41 44
n/a
90 68
n/a
112 118 93
2 36 39 85 63 107 113 88
3 31 34 80 58 102 108 83
4 26 29 75 53 97 103 78
5 21 24 70 48 92 98 73
6 16 19 65 43 87 93 68
7 11 14 60 38 82 88 63
8
n/a
n/a
55 33 77 83 58
9 50 28 72 78 53
10 45 23 67 73 48
NOTE − Table 7 continued on next page with concentric terminations.