Layout And Key Components - Navien NPE-180A Service Manual

2.2 Layout and Key Components

The following diagram shows the key components of the water heater. Component assembly diagrams and particular parts lists are included
in the Appendix.
Intake Air Duct
Fan Motor
Dual Venturi
High Limit Switch
Gas Pipe
APS (Air Pressure Sensor)
Buffer Tank
Circulation Pump
Gas Valve
2-Way Valve
Gas Inlet Fitting
DHW Supply Fitting
Recirculation Inlet Fitting
* Refer to components Diagram and Part List in page 133.
[NPE-180A/ 210A/ 240A]
Exhaust Duct
Exhaust Limit Temperature Sensor
Exhaust Body
Ignition Transformer
Burner
Primary Heat Exchanger
Secondary Heat Exchanger
Flow Sensor
Front Panel
Condensate Trap
PCB Box
Water Adjustment Valve
Water Inlet Filter
Power Switch
Condensate Drain Fitting
Condensate Drain Lid
Product Information 13