Maximum Allowable Exposed Vent Pipe Length Table - Carrier 58MVB Series Product Data

WITH INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT*
WINTER DESIGN
UNIT SIZE TEMP °F
20
040-14
- 20
20
060-14
- 20
20
080-14
080-20
- 20
20
100-20
- 20
20
120-20
- 20
* Pipe length (ft) specified for maximum vent pipe lengths located in unconditioned spaces. Vent pipes located in unconditioned space cannot
exceed the total allowable pipe length as specified in the Maximum Allowable Pipe Length table.
† Insulation thickness based on R value of 3.5 per in.
18
MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT)
MAX PIPE DIA
(IN.)
2
0 2
2
2
0 2
2
2
0 2
2
2-1/2
0 2-1/2
2-1/2
3
0 3
3
INSULATION THICKNESS (IN.)†
0 3/8
21 37
10 22
5 14
30 55
16 33
9 23
37 65
20 39
11 27
41 70
21 42
11 28
49 70
26 51
15 35
1/2 3/4
42 50
25 30
17 21
61 70
38 46
26 33
70 70
45 55
31 39
70 70
48 59
33 41
70 70
58 70
40 50
1
57
35
25
70
53
38
70
63
45
70
68
49
70
70
59