Noritz N-0751M Instructional Manual

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NR98,NR111,NRC111,NC199&NCC199Series

FanReplacementandCleaningProcedure

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ThisinstructionalmanualisonlyintendedforusebyaqualifiedserviceprofessionalorauthorizedNoritz

ServiceRepresentative.Anyunauthorizeduseofthismanualmayresultinvoidingthewarranty.

PleasecontactNoritzTechnicalSupport(866‐766‐7489)foradditionalsupport.

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NoritzAmericaCorporation

11160GraceAvenue,FountainValley,CA92708

Phone866‐766‐7489Fax714‐241‐1196

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NR98(N‐0751M),NR111(N‐0931M),NRC111(N‐0842MC),NC199,&NCC199(N‐0841MC)Series

FanReplacementorCleaningProcedure

ProcedureDiagram

1. Removefrontcover

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(1) Disconnectelectricalpowertounit

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(2) Turnoffgasandwater

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(3) Remove4screws

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2. RemoveGFCI

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(1) RemovetwoscrewsthatholdtheGFCI

Plate,onescrewwillhaveaground

wireattached),LetGFCIhangoutside

oftheunit

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3. Removegasvalveassembly

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(1) Locate“C”clamponthebottomright

handcorneroftheunitthatattaches

thegasconnectiontothemanifold

plateandremove.

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ProcedureDiagram

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(2) Locateinletgaspipetomanifoldand

pushup.Thenlocatethelargewiring

connection,thatattachesthewires

fromthemanifoldplatetothewiring

harness,anddisconnecttheplug.

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(3) Nextlocatethefourbigsilverscrews

holdingthemanifoldplatetothe

burner,therewillbetwoontheright

andleftsideofthemanifoldplate.

Removethosefourscrewsandthe

manifoldplateandpipecanbe

removedandsetaside.

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(4) Unplugthewireforthefan

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ProcedureDiagram

4. Removethefanfromhousing

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(1) Remove3screwsthatareontheouter

edgethatjustgothroughthesingle

metalplate

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(2) Pulloutfanmotor,thebladewillbe

attachedtothemotor

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5. CleaningFan

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(1) Thefanmaybemetalorplastic

dependingonwhichunityouare

workingon

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(2) Cleanthefanwithcompressedair

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(3) Ifthefanrequiresmorecleaningand

youhavetousewaterordegreaser

thenremovethefanbladefromthe

motorbyremovingnutinthemiddle

ofthefan.(Ifyoudon’tdothisyou

maydamagethefanmotor)

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(4) Makesurethefanbladeiscompletely

drybeforereinstallingthebladeback

onthemotor

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6. ReplacingtheFanMotorandBlade

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(1) Ifthenewfancamewiththehousing,

removethefanmotorandbladefrom

thehousingandjustreplacethemotor

andblade.

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7. ReassembletheFanintounit

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(1) Ifbladewasremovedfromthefan

motor,tightennutsnuggly.DoNot

OverTighten!!

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(2) Followsteps1‐4inreverseorderto

reassemblefanandunit.

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Noritz N-0751M, NR98 Series Instructional Manual

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