7
About the Water Heater
2.1 Description of the Water
Heater
The NPN-series water heater is available in 7 models:
NPN-160U, NPN-180U, NPN-199U, NPN-120E, NPN-
160E, NPN-180E, and NPN-199E.
The main features are as follows:
Ɣ
Potable domestic hot water and combination
space heating
Ɣ
Maximum temperature: 140 °F (60 °C)
Ɣ
Stainless steel Heat Exchanger with stainless steel
piping
2.2 Parts of the Water Heater
Air Intake
Air Intake
Exhaust Gas
[NPN-160U/180U/199U]
Air Intake
Air Intake
Exhaust Gas
[NPN-120E/160E/180E/199E]
2.2.1 Bottom View
c
a
b
#
Description
Remark
a
Hot Water Outlet Connection
b
Cold Water Inlet Connection
c
Gas Inlet
2. About the Water Heater
Summary of Contents for NPN-120E
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