Armstrong Air Conditioning A96DS2V - Page 17

507405-05 Page 17 of 72Issue 1621
Maximum Allowable Intake or Exhaust Vent Length in Feet
Standard 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
66
51
29
n/a
100
78
n/a
123 122 103
2
61
46 24
100
95 73 118 117
98
103
3
56
41 19
95
90 68 113 112 93
98
4
51
36
n/a
90
85 63 108 107 88
93
5
46
31
85
80 58 103
102
83
88
6
41
26
80
75 53
98
97 78
83
7
36
21
75
70 48 93 92 73
78
8
31
16
70
65 88 87 68
73
9
26
65
60 83 82 63
68
10 21
60
55 78 77 58
63
Standard 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 66 51 29
n/a
100
77
58
58
2 61 46 24
95
100
78
123
122
103
103
3 56 41 19 90
95
73
118
117
98
98
4 51 36
n/a
85
90 68
113
112
93
93
5 46
31
80
85
63
108
107
88
88
6 41 26 75
80
58
103
102
83
83
7 36 70
75
98
97
78 78
8 31 65
70
93
92
73
73
9 26 60
65
88
87
68
68
10
21
55
60
83
82
63 63
14
9
43
38
33
43
38
33
28
8
13
23
18
11
21
16
14
9
53
48
43
38
43
38
33
28
23
18
13
8
11
6
55
58
n/a
55 33
n/a
78
9
* 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.
A96DF2V
Table 7A