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


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10
FACTS TO CONSIDER ABOUT THE LOCATION
Carefully choose an indoor location for the new water heater, because
theplacementisaveryimportantconsiderationforthesafetyofthe
occupantsinthebuildingandforthemosteconomicaluseofthe
appliance.This water heater is not for use in manufactured
(mobile) homes or outdoor installation.
Whetherreplacinganoldwaterheaterorputtingthewaterheaterin
anewlocation,thefollowingcriticalpointsmustbeobserved:
1.Selectalocationindoorsascloseaspracticaltotheventterminalor
locationtowhichthewaterheaterventpipingisgoingtobeconnected,
andascentralizedwiththewaterpipingsystemaspossible.
2.Selectedlocationmustprovideadequateclearancesforservicing
andproperoperationofthewaterheater.
Installationofthewaterheatermustbeaccomplishedinsuchamanner
thatifthetankoranyconnectionsshouldleak,theowwillnotcause
damagetothestructure.Forthisreason,itisnotadvisabletoinstall
thewaterheaterinanatticorupperoor.Whensuchlocationscannot
beavoided,asuitablemetaldrainpanshouldbeinstalledunderthe
waterheater.Drainpansareavailableatyourlocalhardwarestore.
Suchadrainpanmusthaveaclearanceofatleast1.0”(2.5cm)
greaterthananypointonthewaterheater’souterjacketandmust
bepipedtoanadequatedrain.Thepanmustnotrestrictcombustion
airow.Forexample,ifacircularpanisused,itmustbeaminimum
of27”(69cm)indiameter.SeeFigure1.
Waterheaterlifedependsuponwaterquality,waterpressureand
theenvironmentinwhichthewaterheaterisinstalled.Waterheaters
aresometimesinstalledinlocationswhereleakagemayresultin
propertydamage,evenwiththeuseofadrainpanpipedtoadrain.
However,unanticipateddamagecanbereducedorpreventedby
aleakdetectororwatershut-offdeviceusedinconjunctionwitha
pipeddrainpan.Thesedevicesareavailablefromsomeplumbing
supplywholesalersandretailers,anddetectandreacttoleakage
in various ways:
• Sensorsmountedinthedrainpanthattriggeranalarmorturnoffthe
incomingwatertothewaterheaterwhenleakageisdetected.
•Sensorsmountedinthedrainpanthatturnoffthewatersupplyto
theentirebuildingwhenwaterisdetectedinthedrainpan.
•Watersupplyshut-offdevicesthatactivatebasedonthewater
pressuredifferentialbetweenthecoldwaterandhotwaterpipes
connected to the water heater.
•Devicesthatwillturnoffthegassupplytoagaswaterheaterwhile
atthesametimeshuttingoffitswatersupply.
INSTALLATIONS IN AREAS WHERE FLAMMABLE LIQUIDS
(VAPORS)ARE LIKELYTO BE PRESENT OR STORED
(GARAGES,STORAGEANDUTILITYAREAS,ETC.):Flammable
liquids(suchasgasoline,solvents,propane(LPorbutane,etc.)and
othersubstances(suchasadhesives,etc.)emitammablevapors
whichcanbeignitedbyagaswaterheater’shotsurfaceigniteror
mainburner.Theresultingashbackandrecancausedeathor
serious burns to anyone in the area.
Also,thewaterheatermustbelocatedand/orprotectedsoitisnot
subjecttophysicaldamagebyamovingvehicle.
Thiswaterheatermustnotbeinstalleddirectlyoncarpeting.
Carpetingmustbeprotectedbymetalorwoodpanelbeneaththe
applianceextendingbeyondthefullwidthanddepthoftheappliance
byatleast3”(7.6cm)inanydirection,oriftheapplianceisinstalled
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