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11
About the Boiler
1.5 Dimensions
The following diagrams show the dimensions of the boiler and the table lists the supply connections.
28.7" (730 m
m
)
37.5" (952 mm)
29.1" (738 mm)
27.6" (702 m
m
)
Supply Connections
Description
Diameter
A
Air Intake
2 in
B
Exhaust Gas Vent
2 in
C
Air Vent Connection
3
/
4
in
D
Heating Supply
1
1
/
4
in
E
Heating Return
1
1
/
4
in
F
Gas Connection
3
/
4
in
G
Condensate Outlet
1
/
2
in
Overhead View
A
B
C
3.8” (97 mm)
4.3” (109 mm)
4.1”
(105 m
m
)
9.7” (246 mm)
17.3” (440 mm)
Supply Connections
14.6” (370 mm)
2.6” (67 mm)
12.1” (308 mm)
6.3” (160.5 mm)
D
E
F G
17.3”
(440
m
m
)
9.6” (244 mm)
3.2” (81.7 mm)
Summary of Contents for NFB-175H
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