Lennox EL296UHVX Series Unit Information page 55

NOTE - 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.
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation.
1-1/2" Pipe
Number
Of 90°
Model
Elbows
Used
045 070
1 25 20
2 20 15
3 15 10
4 10
5
6
7 n/a
n/a
8
9
10
1-1/2" Pipe
Number
Of 90°
Model
Elbows
Used
045 070
1 25 20
2 20 15
3 15 10
4 10
5
6
7 n/a
n/a
8
9
10
See concentric terminations next page.
Maximum Allowable Intake or Exhaust Vent Length in Feet
Standard Termination at Elevation 0 - 4500 ft
090 110 135 045 070
81 66
76 61
71 56
66 51
61 46
n/a n/a n/a
56 41
51 36
46 31
41 26
36 21
Standard Termination Elevation 4500 - 10,000 ft
090 110 135 045 070
81 66
76 61
71 56
66 51
61 46
n/a n/a n/a
56 41
51 36
46 31
41 26
36 21
TABLE 24
2" Pipe 2-1/2" Pipe
Model
090 110 135 045 070
44 24 115 115
39 19 110 110
34 14 105 105
29 100 100
24 95 95
n/a
19 90 90
14 n/a 85 85
80 80
n/a 75 75
70 70
2" Pipe 2-1/2" Pipe
Model
090 110 135 045 070
44 115 115
39 110 110
34 105 105
29 100 100
24 95 95
n/a n/a
19 90 90
14 85 85
80 80
75 75
n/a
70 70
Page 55
3" Pipe
Model Model
090 110 135 045 070
93 58 138 137
88 53 133 132
83 48 128 127
78 43 123 122
73 38 118 117
n/a
68 33 113 112
63 28 108 107
58 23 103 102
53 18 98 97
48 13 93 92
3" Pipe
Model Model
090 110 135 045 070
93 58 138 137
88 53 133 132
83 48 128 127
78 43 123 122
73 38 118 117
n/a
68 33 113 112
63 28 108 107
58 23 103 102
53 18 98 97
48 13 93 92
090 110 135
118 118 114
113 113 109
108 108 104
103 103 99
98 98 94
93 93 89
88 88 84
83 83 79
78 78 74
73 73 69
090 110 135
118 118 114
113 113 109
108 108 104
103 103 99
98 98 94
93 93 89
88 88 84
83 83 79
78 78 74
73 73 69