Allied A93UH1E - Page 28

508107-01Issue 2041Page 28 of 58
A93UH1E & 92G1UHE Maximum Allowable Intake or Exhaust Vent Length 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
030 /
045
070 090 110
030 /
045
070 090 110
030 /
045
070 090 110
030 /
045
070 090 110
1 25 20
n/a n/a
76 61 39 19 110 95 63 38 132 132 113 113
2 20 15 71 56 34 14 105 90 58 33 127 127 108 108
3 15 10 66 51 29 9 100 85 53 28 122 122 103 103
4 10
n/a
61 46 24
n/a
95 80 48 23 117 117 98 98
5
n/a
56 41 19 90 75 43 18 112 112 93 93
6 51 36 14 85 70 38 13 107 107 88 88
7 46 31 9 80 65 33 8 102 102 83 83
8 41 26
n/a
75 60 28
n/a
97 97 78 78
9 36 21 70 55 23 92 92 73 73
10 31 16 65 50 18 87 87 68 68
Concentric Termination 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
030 /
045
070 090 110
030 /
045
070 090 110
030 /
045
070 090 110
030 /
045
070 090 110
1 20 15
n/a n/a
68 53 37 17 100 85 59 34 116 116 109 109
2 15 10 63 48 32 12 95 80 54 29 111 111 104 104
3 10
n/a
58 43 27 7 90 75 49 24 106 106 99 99
4
n/a
53 38 22
n/a
85 70 44 19 101 101 94 94
5 48 33 17 80 65 39 14 96 96 89 89
6 43 28 12 75 60 34 9 91 91 84 84
7 38 23 7 70 55 29
n/a
86 86 79 79
8 33 18
n/a
65 50 24 81 81 74 74
9 28 13 60 45 19 76 76 69 69
10 23 8 55 40 14 71 71 64 64
*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.
Table 11.