Carrier 58MXA - Horizontal Installation; Air Ducts

16
MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH AND WITHOUT INSULATION
IN WINTER DESIGN TEMPERATURE AMBIENT*
* 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 Maximum Allowable Pipe Length table.
† Insulation thickness based on R value of 3.5 per in.
UNIT
SIZE
WINTER DESIGN
TEMPERATURE
(°F)
MAX PIPE
DIAMETER
(IN.)
WITHOUT
INSULATION
WITH 3/8-IN. OR
THICKER INSULATION†
040-08
040-12
20 1-1/2 51 70
0 1-1/2 28 70
–20 1-1/2 16 70
060-08
060-12
060-16
20 2 65 70
0 2 35 70
–20 2 20 70
080-12
080-16
080-20
20 2-1/2 70 70
0 2-1/2 47 70
–20 2-1/2 28 70
100-16
100-20
20 3 70 70
0 3 50 70
–20 3 28 70
120-20
20 4 70 70
0 4 48 70
–20 4 23 70
140-20
20 4 70 70
0 4 57 70
–20 4 30 70