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MaincomponentsReplacementInstructions
1.Closethegasshutovalve.
2.Turnthepowero.
3.Closeallwatervalve(HotwaterandDHW)
4.Loosenthefastenedscrewsofthecasefront
bracket.
6.Disconnecttheelectricalconnectiontothe
gasvalve.
7.Loosenthenutsasshown.
8.Removethebracket’stwoscrewsandseparate
gasvalvefromthecabinet.
9.Replacethegasvalvewithnewcomponent.
Checktheo-ringsfordamage,ifdamaged,replacewith
newo-rings.
10.Assembleinthereverseorderasthepartwas
removed.
11.Openthegasshutovalve.
12.Turnthepoweron.
13.Openwatervalves(HotwaterandDHW)
14.Turntheunitonandensureproperoperation.
Chapter5ReplacementInstructions
6.GasValve
NOTE
1.Replaceitwiththenewgasvalve.
2.Checkwireconditionconnectedtogasvalve.
3.Makesurethepackingisinsertedcorrectlywhen
assemblingthenuts.
4.Comparetothemanifoldpressurewithpressure
indicatedattheratingplateafterconnectinggasvalve.
5.Checkforgasleaksafterreinstallingnewgasvalve.