ONHW30NG60 User Manual

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Page13

Version1.0Aug2018

Installation(WaterSupplyLines)

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InstalltheservicevalveattheColdwaterinletporttotheheater.Thisvalveisusedwhenservicinganddrainingthe

unit–seeFigure10. 

Thewaterpipingsupplyingtheheatershouldbethesamenominalsizeasthewaterheaterfittingsontheunit. 

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Beforeconnectingtheservicevalvetowaterheater,runwaterthroughthesupplypipetopurgesand,debris,air,

caulking,etc–seeFigure11.

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Positionabucketatthewateroutletoftheheaterandopentheservicevalve.Allowthecoldwaterflowthroughthe

waterheaterforapproximately15secondsandclosetheservicevalve–seeFigure12.

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Figure 10

Figure 11

Figure 12

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User Manual - Page 14