15. Replace Fan; 16. Replace Manifold Plate; 17. Reconnect All Wires - Noritz NR50 Series Instructional Manual

Procedure

15. Replace Fan

(1) Located metal tab on top of fan and
use slot on burner to guide fan in place
(2) Tighten 2 screws on both sides of the
fan towards the back of case

16. Replace manifold plate

(1) Secure the 3 smaller gold screw from
the manifold plate that attach the
manifold to the gas valve (do not fully
tighten)
(2) Secure the 4 big silver screws on the
manifold plate that attach the
manifold to the burner (do not fully
tighten)
(3) Hand tighten all 7 screws equally.
17. Reconnect all wires that attach to the
wiring harness and the body of the water
heater
(1) Flame rod and ignition plug
(2) Freeze prevention heater, thermal
fuse (2), high limit switch
(3) Freeze prevention sensor
(4) Igniter plug
(5) Secure the wire anchor on right side of
the case
Diagram
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