Lennox EL296DFE Series Installation Instructions

Page 20
TABLE 7 Continued
Maximum Allowable Intake or Exhaust Vent Length
Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Intake and Exhaust must be same 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.
Concentric Termination at Elevation 0 - 4500 ft
Number
Of 90°
Elbows
Used
2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model
045 070 090 110 045 070 090 110 045 070 090 110
1 63 48 32 12 95 95 79 44 111 111 104 104
2 58 43 27 7 90 90 74 39 106 106 99 99
3 53 38 22 2 85 85 69 34 101 101 94 94
4 48 33 17
n/a
80 80 64 29 96 96 89 89
5 43 28 12 75 75 59 24 91 91 84 84
6 38 23 7 70 70 54 19 86 86 79 79
7 33 18 2 65 65 49 14 81 81 74 74
8 28 13
n/a
60 60 44 9 76 76 69 69
9 23 8 55 55 39 4 71 71 64 64
10 18 3 50 50 34 n/a 66 66 59 59
Concentric Termination Elevation 4501 - 10,000 ft
Number
Of 90°
Elbows
Used
2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model
045 070 090 110 045 070 090 110 045 070 090 110
1 63 48 32
n/a
95 95 79 44 111 111 104 94
2 58 43 27 90 90 74 39 106 106 99 99
3 53 38 22 85 85 69 34 101 101 94 94
4 48 33 17 80 80 64 29 96 96 89 89
5 43 28 12 75 75 59 24 91 91 84 84
6 38 23 7 70 70 54 19 86 86 79 79
7 33 18 2 65 65 49 14 81 81 74 74
8 28 13
n/a
60 60 44 9 76 76 69 69
9 23 8 55 55 39 4 71 71 64 64
10 18 3 50 50 34 n/a 66 66 59 59
TABLE 8
Maximum Allowable Exhaust Vent Length 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 - 10,000 ft
Number
Of 90°
Elbows
Used
2” Pipe 2-1/2” Pipe 3” Pipe
Model Model Model
045 070 090 110 045 070 090 110 045 070 090 110
1 61 46 24
n/a
90 90 68 33 108 107 88 88
2 56 41 19 85 85 63 28 103 102 83 83
3 51 36 14 80 80 58 23 98 97 78 78
4 46 31 9 75 75 53 18 93 92 73 73
5 41 26 4 70 70 48 13 88 87 68 68
6 36 21
n/a
65 65 43 8 81 82 63 63
7 31 16 60 60 38 3 78 77 58 58
8 26 11 55 55 33
n/a
73 72 53 53
9 21 6 50 50 28 68 67 48 48
10 16 1 45 45 23 63 62 43 43

Lennox EL296DFE Series Specifications

General

Brand	Lennox
Model	EL296DFE Series
Category	Furnace
Language	English