Noritz MR-2 Manuale utente

1



MR‐IM‐2

Rev.3/21

InstallationGuide

CommercialMulti‐RackSystem

Model:MR‐2

InstallationTime:5‐10Minutes

WARNING

Inordertoproperlyinstallthisaccessory,please

readtheInstallationManualcarefullybefore

proceeding.Failuretodosocouldresultina

seriousinjury.

RequestforInstallers:

Anycasesofdamageormalfunctionduetoimproperinstallationwillbethe

responsibilityoftheinstallerregardlessofwarrantycoverage.

PleaserefertotheInstallationManualincludedwiththewaterheaterforadditional

informationtocompletetheinstallation.

Oncetheinstallationiscompleted,confirmallproceduresbasedonthisInstallation

Guide.

2

Introduction

IncludedParts

ThefollowingpartsaresuppliedintheCommercial

Multi‐RackSystem.Checkforanymissingitems

beforestartingtheinstallation.



ThismanualcoverstheinstallationoftheNoritzCommercialMulti‐RackSystem(#MR‐2)forcommercial

tanklesswaterheatermodels.ThemodeltypecanbeverifiedfromtheRatingPlatelocatedonthewater

heaterinordertocheckforcompatibility(seebelow).Pleasereadthefollowinginstructionscompletely

beforestartingtheinstallation.



CompatibleNoritzCommercialModels: 

NC199Series*

NCC199Series

NC250Series

NC380‐SV‐ASME



Parts/ToolsRequired:

PhilipsScrewdriver

SocketWrench

Level

Pencil/Marker

*NC199seriesmodelswillrequireadditionalpre‐drilled

holesontheRackTopand/ortheAdjustableMounting

Plateforadirectfittothemountingbracketsonthe

waterheater.SeeNoteonPage4.

3

InstallationProcedure Donotattempttoovertightenanyofthe

boltsasthismaydamagethethreadsand

preventtheboltfromturning

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1) DeterminethebestareatoinstalltheCommercialMulti‐RackSystemwhereallthesafetyand

clearancerequirementstothewaterheaterandventingaremet.



2) Removeallitemsfromthepackagingandensurethatallpartsandaccessoriesareincludedinthekit.



3) SettheRackBaseatthedesiredinstallationlocationandlayitflatontheground.



4) TaketheRackTopAssemblyandholditnearthecenterofthebaseasshowninFigure1.Usethe

includedM12boltsettoattachtheRackToptothebase.Afterthatiscompleted,takebothleftand

rightReinforcementPlatesanduseM12boltstoattachthemtotheholesprovidedontheRackTop

andBaseforaddedstability.



 



<Figure1>InstallationofCommercialMulti‐RackSystem

4

5) UsetheAdjustableMountingPlatefromtheRackTopAssemblyandattachittotheracksystemin

eitherPosition2or3usingtheprovidedholesontheRackTopasshowninFigure2below.Position

1willnotbeused.Refertothechartbelowforcorrespondingpositionstothelistedcompatible

models.





Position2Position3

NC199,NCC199,NC250Series NC380, NCC300Series

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<Figure2>ProperPositionoftheAdjustableMountingPlate

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6) CAUTION!Confirmthattheracksystemremainsflatandsecuretothegroundbeforeanyunitsare

mounted.Topreventtherackfromfallingoverandpossiblycausinginjury,usefield‐supplied

anchorboltstosecuretheRackBasetothefloor.



7) Oncetherackhasbeenproperlyinstalledandsecured,carefullyholdtheNoritzwaterheaterin

placeandusethefivetappingscrewstomounttheunittotherack(Figure3).Anumberof

mountingholesareprovidedtofitthetopandbottommountingbracketsonthewaterheater.



FORNC199SERIESMODELS:Someadditionalmountingholeswillbeneededtosecurelymountthe

NC199seriesmodelstotherack.PlacetheunitagainsttheRackTopandlineupallthemounting

pointstotheAdjustableMountingBracket.Usealeveltomakesurethatthewaterheateris

mounteduprightanduseapencilormarkertomarktheareaswherethenewholeswillbeneeded.

Usetheprovidedtappingscrewstoattachtheunittotherackandcompletetheinstallation.

5



<Figure3>MountingtheWaterHeatertotheRackSystem



8) Attachthewaterandgasconnectionstothewaterheater(s)accordingtotheInstallationManual

providedwiththeunits.Wheninstallingmultiplewaterheatersontherack,makesuretofollowall

clearancerequirementsfromtheunitasstatedontheRatingPlate.

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