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NR50-OD / NR66-OD / N-0531S-OD
4. Components
G.F.C.I
ENW
Exhaust Terminal
Anti-Frost Heater*
Anti-Frost Heater*
High-Limit Switch
Flame Rod
Ignition Electrode
Manifold
Heat Exchanger
Thermal Fuse
Gas Valve Unit
Gas Inlet
Cold Water Inlet
Hot Water Outlet
Water Drain Valve
Water Flow Sensor
Circuit Board
Igniter
Fan Motor
Flow Control Valve
* 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.
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