Lennox ELITE EL195UHE Installation Instructions Manual page 20

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
n/a 65
60
2-1/2" Pipe
Model
070 090 110 135
105 89 54
100 84 49
95 79 44
90 74 39
85 69 34
n/a
80 64 29
75 59 24
70 54 19
65 49 14
60 44 n/a
2-1/2" Pipe
Model
070 090 110 135
105 89 54
100 84 49
95 79 44
90 74 39
85 69 34
n/a
80 64 29
75 59 24
70 54 19
65 49 14
60 44 n/a
Page 20
3" Pipe
Model
045 070 090 110
121 121 114 114
116 116 109 109
111 111 104 104
106 106 99 99
101 101 94 94
96 96 89 89
91 91 84 84
86 86 79 79
81 81 74 74
76 76 69 69
3" Pipe
Model
045 070 090 110
121 121 114 114
116 116 109 109
111 111 104 104
106 106 99 99
101 101 94 94
96 96 89 89
91 91 84 84
86 86 79 79
81 81 74 74
76 76 69 69
135
105
100
95
90
85
80
75
70
65
60
135
105
100
95
90
85
80
75
70
65
60