Fi
d
b
b il
&
h
B il
M
l
Finned copper tube gas boilers & water heaters – Boiler Manual
8
F
F
Figure 3
Vertical Air Intake and Venting for a Direct Vent System
Figure 4
Combination Direct Vent Systems
10 FT
3.1 m
4 FT
1.2 m
5 FT
1.5 m
1.5 FT
0.5 m
5 1/2 FT
1.7 m
1.5 FT.
.5 m
10 FT.
3.1 m
3 FT.
1 m