Noritz N-0842MC-DV - Page 2

NRC111andNCC199(N‐0841MC,N0842MCSeries)HeatExchangerReplacementProcedure
Procedure Diagram
1. Removefrontcover

(1) Disconnectelectricalpowertounit
(2) Remove4screws
(3) Turnoffgasandwater
(4) Removefilteranddrainunit
completely
(5) Opendrainportsonthebottomofthe
unit





2. RemoveGFCIandcircuitboard

(1) RemovetwoscrewsthatholdtheGFCI
Plate,onescrewwillhaveaground
wireattached),LetGFCIhangoutside
oftheunit
(2) Removethegroundwirethatistothe
leftofthecircuitboard
(3) Loosenwireanchorfromrightsideof
case
(4) Removethecircuitboard;thereare
twoscrews,oneontopandbottomof
thecircuitboard.Letthecircuitboard
hangoutsideoftheunit



 

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