Lennox 045-08, Installation Instructions Manual

Page: 19 / 60

507270-03 Page 19 of 60 Issue 1917
A93UH1D and 92G1UH-P 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.
Table 5A.