Lennox Allied Air A95UH1D - Page 22

507270-03Page 22 of 60 Issue 1917
Table 6B.
A95UH1D and 95G1UH-P Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination at Elevation 0 - 4,500 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
Concentric Termination Elevation 4,501 - 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
n/a n/a
100 85 59 34
n/a
116 116 109 109 100
2 63 48 32 95 80 54 29 111 111 104 104 95
3 58 43 27 90 75 49 24 106 106 99 99 90
4 53 38 22 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.