Owner manual

29
INSTALLED IN SUITABLEAREA:To insure sufcient ventilation
andcombustionairsupply,properclearancesfromthewaterheater
mustbemaintained.See“LocatingtheNewWaterHeater”section.
Combustible materials such as clothing, cleaning materials, or
ammableliquids,etc.mustnotbeplacedagainstoradjacentto
thewaterheaterwhichcancauseare.
ANODE ROD INSPECTION
Eachwaterheatercontainsatleastoneanoderod,whichwillslowly
deplete(duetoelectrolysis)prolongingthelifeofthewaterheaterby
protectingtheglass-linedtankfromcorrosion.Adversewaterquality,
hotterwatertemperatures,highhotwaterusage,andwatersoftening
methodscanincreasetherateofanoderoddepletion.Oncetheanoderod
isdepleted,thetankwillstarttocorrode,eventuallydevelopingaleak.
Certainwaterconditionswillcauseareactionbetweentheanoderod
andthewater.Themostcommoncomplaintassociatedwiththeanode
rodisa“rotteneggsmell”producedfromthepresenceofhydrogen
suldegasdissolvedinthewater.IMPORTANT:Donotremovethis
rod
permanentlyas it willvoid any warranties.The partslist includes a
specialanoderodthatcanbeorderedifwaterodorordiscolorationoccurs.
NOTE:Thisrodmayreducebutnoteliminatewaterodorproblems. The
watersupplysystemmayrequirespecialltrationequipmentfromawater
conditioningcompanytosuccessfullyeliminateallwaterodorproblems.
Articially softened water is exceedingly corrosive because the
processsubstitutessodiumionsformagnesiumandcalciumions.
The use of a water softener may decrease the life of the water
heatertank.
Theanoderodshouldberemovedfromthewaterheatertankevery
3yearsforinspection.NOTE:articiallysoftenedwaterrequiresthe
anoderodtobeinspectedannually.
Thefollowingaretypical(butnotall)signsofadepletedanoderod:
 *Themajorityoftherodsdiameterislessthan3/8”.
 *Signicantsectionsofthesupportwire(approx.1/3ormoreofthe
 anoderod’slength)arevisible.
Iftheanoderodshowsignsofeitherorbothitshouldbereplaced.
 NOTE:Whetherre-installingorreplacingtheanoderod,checkfor
 anyleaksandimmediatelycorrectiffound.
Inreplacingtheanode:
1. Turnoffgassupplytothewaterheater.
2. Shutoffthewatersupplyandopenanearbyhotwaterfaucetto
 depressurizethewatertank.
3. Drainapproximately5gallonsofwaterfromtank(Referto“Draining
 andFlushing”forproperprocedures).Closedrainvalve.
4. Removeoldanoderod.
5. UseTeon®tapeorapprovedpipesealantonthreadsandinstall
 newanoderod.
6. Turnonwatersupplyandopennearbyhotwaterfaucettopurgeair
 fromwatersystem.Checkforanyleaksandimmediatelycorrect
 anyiffound.
Restartthewater heater asdirectedunder“OperatingYourWater
Heater.”SeetheRepairPartsIllustrationforanoderodlocation.
FIGURE A. ANODE ROD DEPLETION.
TEMPERATURE-PRESSURE RELIEF VALVE OPERATION
Thetemperature-pressurereliefvalvemustbemanuallyoperated
atleastonceayear.
FIGURE 22.
Whencheckingthetemperature-pressurereliefvalveoperation,
makesurethat(1)nooneisinfrontoforaroundtheoutletof
thetemperature-pressurereliefvalvedischargeline,and(2)that
thewaterdischargewillnotcauseanypropertydamage,asthe
watermaybeextremelyhot,seeFigure22.
Ifaftermanuallyoperatingthevalve,itfailstocompletelyreset
andcontinuestoreleasewater,immediatelyclosethecoldwater
inlettothewater heater,followthe draininginstructions, and
replacethetemperature-pressurereliefvalvewithanewone.
Ifthetemperature-pressurereliefvalveontheapplianceweeps
ordischargesperiodically,thismaybeduetothermalexpansion.
Youmayhaveacheckvalveinstalledinthewaterlineorawater
meter witha check valve. Consultyour local water supplier
orservice agency for further information.Do not plugthe
temperature-pressurereliefvalve.
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.Settheblowerswitchtothe“OFF”position.
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 drainvalveandterminate toanadequate
drainorexternaltothebuilding.
5.OPENwaterheaterdrainvalveandallowallofthewatertodrain
fromtank.Flush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.
7.If thewaterheateris goingtobeshut downforanextended
period,thedrainvalveshouldbeleftopen.
8.IMPORTANT:Condensationmayoccurwhenrellingthetank
andshouldnotbeconfusedwithatankleak.