85
MaincomponentsReplacementInstructions
1.Closethegasshutovalve.
2.Turnthepowero.
3.
Placeabucketundertheunitandragundervalve
tocollecttheresidualwaterfromthewaterheater.
4.Disconnecttheelectricalpowertothewaterheater.
5.ClosethebothDHWinletandhotwatervalve.
6.OpentheHotwaterfaucetscompletely.
7.Disconnectalltheelectricalconnectiontothecircuit
board.LoosenthethreescrewstoremovetheCircuit
BoardandCircuitBoardBracketinonepiece.
8.Separateconnectorconnectedwithwatermixing
valve.
9.Removetwoclipsconnectedwithwatermixing
valveandoutletpipe.
10.Separatewatermixingvalveandoutletpipe.
11. Removethewatermixingvalveandreplacewithnew
sparepart.Checktheo-ringsfordamage,ifdamaged,
replacewithnewo-rings.
12.Assembleinthereverseorderasthepartwas
removed.
13.Switchwatervalvetoopen.
14.Switchmanualpowerswitchtoopen.
15.Switchmaingasvalvetoopen.
16.Testoperation.
Chapter5ReplacementInstructions
8.WaterMixingValve