A.O. Smith 197835-001 Water Heater User Manual


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INSTALLEDINSUITABLEAREA:Toinsuresufcientventilationand
combustionairsupply,properclearancesfromthewaterheatermust
bemaintained.See“FactstoConsiderAboutLocation”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
Theanoderodisusedtoprotectthetankfromcorrosion.Mosthot
watertanksareequippedwithananoderod.Thesubmergedrod
sacricesitselftoprotectthetank.Insteadofcorrodingthetank,
waterionsattackandeatawaytheanoderod.Thisdoesnotaffect
thewater’stasteorcolor.Therodmustbemaintainedtokeepthe
tankinoperatingcondition.
Anodedeteriorationdependsonwaterconductivity,notnecessarily
watercondition.Acorrodedorpittedanoderodindicateshighwater
conductivityandshouldbecheckedand/orreplacedmoreoftenthan
ananoderodthatappearstobeintact.Replacementofadepleted
anoderodcanextendthelifeofyourwaterheater.Inspectionshould
beconductedbyaqualiedtechnician,andataminimumshouldbe
checkedannuallyafterthewarrantyperiod.
TEMPERATURE-PRESSURE
RELIEF VALVE OPERATION
FIGURE 28.
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28.
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a
qualiedserviceagencyforfurtherinformation.Donotplugthe
temperature-pressurereliefvalve.
DRAINING
Thewaterheatershouldbedrainedifbeingshutdownduring
freezingtemperatures.Alsoperiodicdrainingandcleaningof
sedimentfromthetankmaybenecessary.
1.Setthepowerswitchtothe“OFF”position.
2. CLOSE the cold water inlet valve to the water heater.
3.OPENanearbyhotwaterfaucetandleaveopentoallowfor
draining.
4.Connectahosetothedrainvalveandterminatetoanadequate
drain.
5.OPENthewaterheaterdrainvalvetoallowfortankdraining.
NOTE: If the water heater is going to be shut down and
drained for an extended period, the drain valve should be
left open with hose connected allowing water to terminate
to an adequate drain.
6.CLOSEthedrainvalve.
7.Followinstructionsinthe“FillingTheWaterHeater”section.
8.Followthelightinginstructionsonthelabelorsee“Lighting
Instructions”inthismanualtorestartthewaterheater.
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