MrCool Signature Series - Insulating Exhaust Pipe

507276-05CPage 26 of 57 mrcool.com
Maximum Allowable Exhaust Vent Pipe Length (in ft.) without Insulation in Unconditioned Space For Winter Design
Winter Design Temperatures
1
ºF (ºC)
Vent Pipe
Diameter
Unit Input Size
045 070 090 110 135
PVC
2
PP PVC
2
PP PVC
2
PP PVC
2
PP PVC
2
PP
18 16 31 28 50 30 30
13 56
9 9 18 18 35 35 52 52
9 8 18 16 32 29 30 30
5 13
8 8 19 19 26 26 30 30
5 3 12 10 22 19 30 27
7 15 22
10 10 16 16 18 18
1
2
Table 6.
Conditioned
Space
Unconditioned
Space
Exhaust
Pipe
Intake
Pipe
Conditioned
Space
Pipe Insulation
Figure 33. Insulating Exhaust Pipe in an Unconditioned Space