Lennox 95G2UHV

507266-05Page 20 of 58 Issue 1933
Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination at Elevation 0 - 4,500 ft
Number
of 90°
Elbows
Used
1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe
Capacity Capacity Capacity Capacity
45 70 90 110 135 45 70 90 110 135 45 70 90 110 135 45 70 90 110 135
1 20 15
n/a n/a n/a
68 53 37 17
n/a
100 100 84 49
n/a
116 116 109 109 100
2 15 10 63 48 32 12 95 95 79 44 111 111 104 104 95
3 10
n/a
58 43 27 7 90 90 74 39 106 106 99 99 90
4
n/a
53 38 22
n/a
85 85 69 34 101 101 94 94 85
5 48 33 17 80 80 64 29 96 96 89 89 80
6 43 28 12 75 75 59 24 91 91 84 84 75
7 38 23 7 70 70 54 19 86 86 79 79 70
8 33 18
n/a
65 65 49 14 81 81 74 74 65
9 28 13 60 60 44 9 76 76 69 69 60
10 23 8 55 55 39 n/a 71 71 64 64 55
Concentric Termination Elevation 4,501 - 10,000 ft
Number
of 90°
Elbows
Used
1-1/2" Pipe 2" Pipe 2-1/2" Pipe 3" Pipe
Capacity Capacity Capacity Capacity
45 70 90 110 135 45 70 90 110 135 45 70 90 110 135 45 70 90 110 135
1 20 15
n/a n/a n/a
68 53 37
n/a n/a
100 100 84 49
n/a
116 116 109 109 100
2 15 10 63 48 32 95 95 79 44 111 111 104 104 95
3 10
n/a
58 43 27 90 90 74 39 106 106 99 99 90
4
n/a
53 38 22 85 85 69 34 101 101 94 94 85
5 48 33 17 80 80 64 29 96 96 89 89 80
6 43 28 12 75 75 59 24 91 91 84 84 75
7 38 23 7 70 70 54 19 86 86 79 79 70
8 33 18
n/a
65 65 49 14 81 81 74 74 65
9 28 13 60 60 44 9 76 76 69 69 60
10 23 8 55 55 39 n/a 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 5B.