Table of Contents
Advertisement
Use the following steps to correctly size vent pipe diameter.
Furnace capacity?
1
Which termination?
2
Which needs most
3
elbows?
How many?
4
Desired pipe size?
5
What is the altitude?
6
Use Table 22 to find
7
max pipe length.
Figure 24.
070, 090,
110 or 135
btuh
Standard or
Concentric?
See Table 20
Intake or
Exhaust?
1-1/2", 2",
2-1/2"
or 3"
Page 38
31-5000723 Rev. 0
Advertisement
Table of Contents
