CleaverBrooks CFC-500 Operation, Service And Parts Manual page 63

Section 3 — Stack and Intake Vent Sizing and Installation
EXAMPLE 2
GOOD
10"
BAD
o
45
6"
6"
EXAMPLE 3
GOOD
6"
10"
14"
6" 6"
6"
6"
6"
6"
BAD
From Boilers
GOOD
6" 6"
6"
8"
12"
16"
From Boilers
8" 8"
8"
From Boilers
Part No. 750-263 3-13