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MaincomponentsReplacementInstructions
1.Closethegasshutovalve.
2.Turnthepowero.
3.Closeallwatervalve(HotwaterandDHW)
4.DisconnecttheelectricalconnectiontotheAGM.
5.Byusingahandscrewdriver,remove2screwsof
theAGM.
6.Remove3screwsoftheairintakepipeand
loosengaspipenut.
7.Loosenburnerheadbracket’s2screwsand
separatefromburner.
8.Remove3screwsoftheAGMplate.
9.Usingahandscrewdriverorcrescentwrench,
removethe4screwstotheFanassembly.
10.Replacethegasvalvewithnewpart.
Checktheo-ringsfordamage,ifdamaged,replace
withnewo-rings.
11.Assembleinthereverseorderasthepartwas
removed.
12.Openthegasshutovalve.
13.Turnthepoweron.
14.Openwatervalves(HotwaterandDHW)
15.Turntheunitonandensureproperoperation.
Chapter5ReplacementInstructions
11.FanAssembly