Dimensions - Navien NCB-150E Installation & Operation Manual

1.5 Dimensions

The following diagrams show the dimensions of the boiler and the table lists the supply connections.
Overhead View
A B
1.5"
(38 mm)
4.5" (115 mm)
12 About the Boiler
C
14.3" (364 mm)
6.7" (170 mm)
Supply Connections
Description
A Pressure Relief Valve Adapter
B Air Intake
C Exhaust Gas Vent
D Space Heating Supply
E Space Heating Return
F Hot Water Outlet (DHW)
G Gas Supply Inlet
H Cold Water Inlet (DHW)
I Condensate Outlet
Auto Feeder Inlet (Make-up
J
Water)
Supply Connections
D E F
2" 3.5" 4.8"
(50 mm) (88 mm) (123 mm)
17.3" (440 mm)
Diameter
3 / in
4
2 in
2 in
1 in
1 in
3 / in
4
3 / in
4
3 / in
4
1 / in
2
1 / in
2
G H I J
3" 1.8"
(76 mm) (46 mm)