Lennox Allied Air A96UH2E User Manual

507581-04 Page 21 of 60Issue 2128
Maximum Allowable Exhaust Vent Lengths with Furnace Installed in a Closet or Basement Using Ventilated
Attic or Crawl Space for Intake Air in Feet
Standard Termination at Elevation 0 - 4,500 ft
Number
of 90°
Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2" Pipe 3" Pipe
Model Model Model Model
030
045
70 90 110
030
045
70 90 110
030
045
70 90 110
030
045
70 90 110
1 20 15
n/a n/a
66 51 29 9 95 95 73 38 113 112 93 93
2 15 10 61 46 24 4 90 90 68 33 108 107 88 88
3 10
n/a
56 41 19
n/a
85 85 63 28 103 102 83 83
4
n/a
51 36 14 80 80 58 23 98 97 78 78
5 46 31 9 75 75 53 18 93 92 73 73
6 41 26 4 70 70 48 13 88 87 68 68
7 36 21
n/a
65 65 43 8 83 82 63 63
8 31 16 60 60 38 3 78 77 58 58
9 26 11 55 55 33
n/a
73 72 53 53
10 21 6 50 50 28 68 67 48 48
Standard Termination Elevation 4,501 - 10,000 ft
Number
of 90°
Elbows
Used
1-1/2” Pipe 2” Pipe 2-1/2" Pipe 3" Pipe
Model Model Model Model
030
045
70 90 110
030
045
70 90 110
030
045
70 90 110
030
045
70 90 110
1 20 15
n/a n/a
66 51 29
n/a
95 95 73 38 113 112 93 93
2 15 10 61 46 24 90 90 68 33 108 107 88 88
3 10
n/a
56 41 19 85 85 63 28 103 102 83 83
4
n/a
51 36 14 80 80 58 23 98 97 78 78
5 46 31 9 75 75 53 18 93 92 73 73
6 41 26 4 70 70 48 13 88 87 68 68
7 36 21
n/a
65 65 43 8 83 82 63 63
8 31 16 60 60 38 3 78 77 58 58
9 26 11 55 55 33
n/a
73 72 53 53
10 21 6 50 50 28 68 67 48 48
NOTE: Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length
calculation.
Table 5C.

Lennox Allied Air A96UH2E Specifications

General

Brand	Lennox
Model	Allied Air A96UH2E
Category	Furnace
Language	English