System Details; Schematic And Flow Diagram; Nr-A Model - Navien NP-180 Service Manual

4. System Details

4.1. Schematic and Flow Diagram

4.1.1. NR-A Model

Hot water
supply
©Navien America Inc. 2010
Recirculation Cold water
supply
25
NR/NP series service Manual
Exhaust pipe
intake air duct
Fan motor
Manifold
Burner
Primaty H/E
Buffer tank
Secondary H/E
Flow sensor
Check v/v
Circulation pump
Water adjustment v/v
Main gas v/v
3-Way v/v
Fuel gas
inlet
Version 2.0