Components - Noritz NR50-OD Service Manual

4. Components

NR50-OD / NR66-OD / N-0531S-OD
Heat Exchanger
Thermal Fuse
Igniter
Fan Motor
Flow Control Valve
Anti-Frost Heater*
Hot Water Outlet
* Freeze protection kit is an optional accessory for the NR50-OD model and is not included with the unit.
For cold weather installations, the optional Freeze Protection Kit (#SKG7772) is required in order to
prevent internal freezing. For more information about the Freeze Protection Kit, please contact Noritz
Technical Support at 1-866-766-7489.
ENW
Water Flow Sensor
Cold Water Inlet
Water Drain Valve
G.F.C.I
19
Exhaust Terminal
Anti-Frost Heater*
High-Limit Switch
Flame Rod
Ignition Electrode
Manifold
Gas Valve Unit
Circuit Board
Gas Inlet