Instruction manual

21
DRAINING AND FLUSHING
Itisrecommendedthatthetankbedrainedandushedevery6
monthstoremovesedimentwhichmaybuildupduringoperation.The
waterheatershouldbedrainedifbeingshutdownduringfreezing
temperatures.Todrainthetank,performthefollowingsteps:
1.Turnoffthegastothewaterheateratthemanualgasshut-
offvalve.
2.Openanearbyhotwaterfaucetuntilthewaterisnolongerhot.
3.Closethecoldwaterinletvalve.
4.Connectahosetothedrainvalveandterminateittoanadequate
drainorexternaltothebuilding.
5. Open the water heater drain valve and allow all of the water
todrainfromthetank.Flushthetank withwaterasneededto
removesediment.
6.Closethedrainvalve,rell thetank,andrestarttheheateras
directedinthismanual.
Ifthewaterheaterisgoingtobeshutdownforanextendedperiod,
thedrainvalveshouldbeleftopen.
IMPORTANT:Condensationmayoccurwhenrellingthetankand
shouldnotbeconfusedwithatankleak.
DRAIN VALVE WASHER REPLACEMENT FOR
SELECTED MODELS WITH PLASTIC DRAIN VALVES
(SeeFigure19)
1.Turn“OFF”gassupplytowaterheater.
2.Follow“Draining”instructions.
3.Turningcounterclockwise( ),removethehexcapbelowthe
screwhandle.
4.Removethewasherandputthenewoneinplace.
5.Screwthehandleandcapassemblybackintothedrainvalveand
retightenusingawrench.DONOTOVERTIGHTEN.
6.Followinstructionsinthe“FillingTheWaterHeater”section.
7.Checkforleaks.
8. Follow the lighting Instructions in the “Lighting and Operating
Instructions”sectiontorestartthewaterheater.
FIGURE 20.
SERVICE
Beforecallingforrepairservice,readthe“StartUpConditions”and
“OperationalConditions”foundinthe“ForYourInformation”section
ofthismanual.
Ifaconditionpersistsoryouareuncertainabouttheoperationofthe
waterheatercontactaserviceagency.Ifyouarenotthoroughlyfamiliar
withgascodes,yourwaterheater,andsafetypractices,contactyour
gassupplierorqualiedinstallertocheckthewaterheater.
Use the ”Leakage Checkpoints”  guide to check a “Leaking”
waterheater.Manysuspected“Leakers”arenotleakingtanks.Often
thesourceofthewatercanbefoundandcorrected.
Readthismanualrst.Thenbeforecheckingthewaterheatermake
surethegassupplyhasbeenturned“OFF”,andneverturnthegas
“ON”beforethetankiscompletelyfullofwater.
Neverusethiswaterheaterunlessitiscompletelylledwithwater.
Topreventdamagetothetank,thetankmustbelledwithwater.
Watermustowfromthehotwaterfaucetbeforeturning“ON”gas
tothewaterheater.