Lennox 95G2UHV

507266-05 Page 19 of 58Issue 1933
Maximum Allowable Intake or Exhaust Vent Length in Feet
Standard 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 25 20
n/a n/a n/a
76 61 39 19
n/a
110 110 88 53
n/a
133 132 113 113 109
2 20 15 71 56 34 14 105 105 83 48 128 127 108 108 104
3 15 10 66 51 29 9 100 100 78 43 123 122 103 103 99
4 10
n/a
61 46 24
n/a
95 95 73 38 118 117 98 98 94
5
n/a
56 41 19 90 90 68 33 113 112 93 93 89
6 51 36 14 85 85 63 28 108 107 88 88 84
7 46 31 9 80 80 58 23 103 102 83 83 79
8 41 26
n/a
75 75 53 18 98 97 78 78 74
9 36 21 70 70 48 13 93 92 73 73 69
10 31 16 65 65 43 8 88 87 68 68 64
Standard 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 25 20
n/a n/a n/a
76 61 39
n/a n/a
110 110 88 53
n/a
133 132 113 113 109
2 20 15 71 56 34 105 105 83 48 128 127 108 108 104
3 15 10 66 51 29 100 100 78 43 123 122 103 103 99
4 10
n/a
61 46 24 95 95 73 38 118 117 98 98 94
5
n/a
56 41 19 90 90 68 33 113 112 93 93 89
6 51 36 14 85 85 63 28 108 107 88 88 84
7 46 31 9 80 80 58 23 103 102 83 83 79
8 41 26
n/a
75 75 53 18 98 97 78 78 74
9 36 21 70 70 48 13 93 92 73 73 69
10 31 16 65 65 43 8 88 87 68 68 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 5A.