Lennox EL195UHNE Series

Page 23
TABLE 13
Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement Using Ventilated
Attic or Crawl Space For Intake Air in Feet
NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent
length calculation.
Standard Termination at Elevation 0 - 4500 ft
Number Of
90° Elbows
2” Pipe 3” Pipe
Model Model
040 060 080 100 040 060 080 100
1 71 56 34 14 118 117 98 98
2 66 51 29 9 113 112 93 93
3 61 46 24 4 108 107 88 88
4 56 41 19
n/a
103 102 83 83
5 51 36 14 98 97 78 78
6 46 31 9 93 92 73 73
7 41 26 4 88 87 68 68
8 36 21
n/a
83 82 63 63
9 31 16 78 77 58 58
10 26 11 73 72 53 53
Standard Termination at Elevation 4501 - 7500 ft
Number Of
90° Elbows
2” Pipe 3” Pipe
Model Model
040 060 080 100 040 060 080 100
1 71 31 24
n/a
118 85 80 45
2 66 26 19 113 80 75 40
3 61 21 14 108 75 70 35
4 56 16 9 103 70 65 30
5 51 11
n/a
98 65 60 25
6 46
n/a
93 60 55 20
7 41 88 55 50 15
8 36 83 50 45 10
9 31 78 45 40
n/a
10 26 73 40 35