Haier GE APPLIANCES NF96US Service Manual page 28

Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl
1-1/2" Pipe
Number of
Capacity
90° Elbows
Used
045 070
1 15 10
2 10
3
4
5
6 n/a
n/a
7
8
9
10
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.
NOTE - Contact your local FTC if more than 85ft of venting is needed.
Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl
Number of 90°
Elbows Used
045
1 71
2 66
3 61
4 56
5 51
6 46
7 41
8 36
9 31
10 26
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.
NOTE - Contact your local FTC if more than 85ft of venting is needed.
Space For Intake Air in Feet
Standard Termination at Elevation 0 - 2,000 ft
2" Pipe
Capacity
090 110 045 070
71 56
66 51
61 46
56 41
51 36
n/a n/a
46 31
41 26
36 21
31 16
26 11
Space For Intake Air in Feet
Standard Termination at Elevation 2,001 - 10,000 ft
2" Pipe
Capacity
070 090 110
30 15
25 10
20
15
10
n/a
n/a
n/a
2-1/2" Pipe
Capacity
090 110 045 070
34 14 100 100
29 9 95 95
24 90 90
19 85 85
14 80 80
9 75 75
n/a
70 70
65 65
n/a
60 60
55 55
Table 10E.
2-1/2" Pipe
Capacity
045 070 090
100 96 53
95 91 48
90 86 43
85 81 38
80 76 33
75 71 28
70 66 23
65 61 18
60 56 13
55 51 n/a
Table 10F.
Page 28
3" Pipe
Capacity
090 110 045 070
78 43 118 117
73 38 113 112
68 33 108 107
63 28 103 102
58 23 98 97
53 18 93 92
48 13 88 87
43 83 82
38 n/a 78 77
33 73 72
3" Pipe
Capacity
110 045 070
38 118 117
33 113 112
28 108 107
23 103 102
18 98 97
13 93 92
88 87
83 82
n/a
78 77
73 72
090 110
98 98
93 93
88 88
83 83
78 78
73 73
68 68
63 63
58 58
53 53
090 110
98 98
93 93
88 88
83 83
78 78
73 73
68 68
63 63
58 58
53 53
31-5000728 Rev. 0