Navien NPE Installation & Operation Manual page 11

Condensing water heaters
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Exhaust Duct
Exhaust Limit Temperature Sensor
Intake Air Duct
Exhaust Body
Intake Air Filter
Fan Motor
Ignition Transformer
Burner
Dual Venturi
Primary Heat Exchanger
Gas Pipe
Secondary Heat Exchanger
APS (Air Pressure Sensor)
Freeze Protection Switch
Front Panel
Condensate Trap
Gas Valve
PCB Box
Flow Sensor
Water Adjustment Valve
Mixing Valve
Gas Inlet Fitting
Water Inlet Filter
Condensate Drain Fitting
DHW Supply Fitting
Condensate Drain Lid
[NPE-180S/ 210S/ 240S]
About the Water Heater
11

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