Lennox EL195UHE Elite Series Installation Instructions Manual page 19

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.
Number Of
90° Elbows
Used
045 070
1 73 58
2 68 53
3 63 48
4 58 43
5 53 38
6 48 33
7 43 28
8 38 23
9 33 18
10 28 13
Number Of
90° Elbows
Used
045 070
1 73 58
2 68 53
3 63 48
4 58 43
5 53 38
6 48 33
7 43 28
8 38 23
9 33 18
10 28 13
TABLE 5 Continued
Maximum Allowable Intake or Exhaust Vent Length in Feet
Concentric Termination at Elevation 0 − 4500 ft
2" Pipe
Model
090 110 135 045
42 22 105
37 17 100
32 12 95
27 90
22 85
n/a
17 80
12 n/a 75
70
65
n/a
60
Concentric Termination Elevation 4501 − 10,000 ft
2" Pipe
Model
090 110 135 045
42 105
37 100
32 95
27 90
22 85
n/a n/a
17 80
12 75
70
65
n/a
60
2−1/2" Pipe
Model
070 090 110
105 89 54
100 84 49
95 79 44
90 74 39
85 69 34
80 64 29
75 59 24
70 54 19
65 49 14
60 44 n/a
2−1/2" Pipe
Model
070 090 110
105 89 54
100 84 49
95 79 44
90 74 39
85 69 34
80 64 29
75 59 24
70 54 19
65 49 14
60 44 n/a
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3" Pipe
Model
135 045 070 090
121 121 114
116 116 109
111 111 104
106 106 99
101 101 94
n/a
96 96 89
91 91 84
86 86 79
81 81 74
76 76 69
3" Pipe
Model
135 045 070 090
121 121 114
116 116 109
111 111 104
106 106 99
101 101 94
n/a
96 96 89
91 91 84
86 86 79
81 81 74
76 76 69
110 135
114 105
109 100
104 95
99 90
94 85
89 80
84 75
79 70
74 65
69 60
110 135
114 105
109 100
104 95
99 90
94 85
89 80
84 75
79 70
74 65
69 60