Navien NPN Installation & Operation Manual page 13

Non-condensing water heaters
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7.9 in (201.6 mm)
Overhead View
0.4 in (11.2 mm)
12
About the Water Heater
1 in (26 mm)
Supply Connections
Supply Connections
[NPN-120E/160E/180E/199E]
Description
A
Hot Water Outlet
B
Cold Water Inlet
C
Gas Inlet
A
B
2.7 in
3.2 in
4.9 in
(68 mm)
(80.1 mm)
(124.1 mm)
14 in (356 mm)
Diameter
/
in
3
4
/
in
3
4
/
in
3
4
C

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