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Navien NPN User Manual

Navien NPN
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9About the Water Heater
2.5 Components
The following diagram shows the key components of the water heater. Component assembly diagrams and
particular parts lists are included in the Appendixes.
Intake Air/Exhaust Duct
Condensate Drain
STS Heat Exchanger
NaviTech
TM
Burner
Ignitor&Flame Rod
Front Panel
PCB
Water Inlet Filter
Gas Inlet Fitting
Fan Motor
Ignition Transformer
APS (Air Pressure Sensor)
DHW Supply Fitting
Cold Water Inlet Adapter
[NPN-160U/180U/199U]

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Navien NPN Specifications

General IconGeneral
TypeTankless
Fuel TypeNatural Gas or Propane
EfficiencyUp to 0.96 UEF
Voltage120V
Temperature Range98°F - 140°F
Installation TypeIndoor/Outdoor
Max GPM11.2 GPM
Gas Connection3/4 inch NPT
Water Connection3/4 inch NPT
Vent Size2 inch or 3 inch PVC/CPVC
Warranty15 years heat exchanger, 5 years parts

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