Fi
d
b
b il
&
h
B il
M
l
Finned copper tube gas boilers & water heaters – Boiler Manual
5
F
F
Figure 2
Vertical Venting using
a Masonry Chimney and Inside Air
Figure 3
Horizontal Venting using Inside Air
1.5 FT
0.5 m
1/4 IN. PER F00T
20 mm/m
305 TO 457
127 TO 254
VENT PIPE DIAMETER
5" TO 10"
12" TO 18"
MINIMUM VERTICAL RISE
OFF THE TOP OF UNIT "A"
IN.
mm
FT
mm
12"
24"
305
610
Table 2
