Lennox EL195UHNE Series

Page 20
TABLE 6
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