Dimensions - Navien NCB-180 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
1.5" (38 mm)
4.5" (115 mm)
12 About the Boiler
B
14.3" (364 mm)
6.7" (170 mm)
Supply Connections
Description
A Air Intake
B Exhaust Gas Vent
C Space Heating Supply
D Space Heating Return
E Hot Water Outlet (DHW)
F Gas Supply Inlet
G Cold Water Inlet (DHW)
H Condensate Outlet
Auto Feeder Inlet (Make-up
I
Water)
Supply Connections
C D E
2" 3.5" 4.8"
(50 mm) (88 mm) (123 mm)
17.3" (440 mm)
Diameter
2 in
2 in
1 in
1 in
/ in
3
4
/ in
3
4
/ in
3
4
/ in
1
2
/ in
1
2
F G H I
3" 1.8"
(76 mm) (46 mm)