11

inanalcoveorcloset,theentireoormustbecoveredbythepanel.

Failuretoheedthiswarningmayresultinarehazard.

Minimumclearancesbetween the water heater and combustible
constructionare0inchatthesidesandrear,5.5”(14.0cm)fromthefront
and12”(30.5cm)fromthetop.(Standard clearance.)Ifclearances
statedonthe heater differ from standard clearances, install water
heateraccordingtoclearancesstatedontheheater.
Adequateclearance24”(61.0cm)forservicingthisapplianceshouldbe
consideredbeforeinstallation,suchaschangingtheanodes,etc.
Aminimumclearanceof5.5” (14.0cm)must beallowedforaccess to
replaceablepartssuchasthethermostats,drainvalveandreliefvalve.
Wheninstallingthe heater, consideration must be given to proper
location.Locationselectedshouldbeasclosetothewallaspracticable
andascentralizedwiththewaterpipingsystemaspossible.

FIGURE 4.

InsulatIon BlanKets
Insulationblanketsareavailabletothegeneralpublic forexternaluse
ongaswaterheatersbutare notnecessarywiththeseproducts.The
purposeofan insulation blanket is to reduce the standby heat loss
encounteredwithstorage tank heaters. Yourwater heater meets or 
exceedstheEnergyPolicyActstandardswithrespecttoinsulationand
standbylossrequirements,makinganinsulationblanketunnecessary.
Shouldyouchoosetoapplyaninsulationblankettothisheater,you
shouldfollowthese instructions (For identication of components
mentionedbelow,seeFigure1).Failureto followtheseinstructions
canrestrictthe airowrequired forpropercombustion, potentially
resultinginre,asphyxiation,seriouspersonalinjuryordeath.
• Do not applyinsulationtothe topofthewaterheater, asthiswill
interferewithsafeoperationoftheblowerassembly.
• Do notcovertheouterdoor,thermostatortemperature&pressure
relief valve.
• Do not allowinsulationto comewithin2” (5.1cm)of theoorto
preventblockageofcombustionairowtotheburner.
• Do notcoverthe instruction manual.  Keep it on the side of the
water heater or nearby for future reference.
• Doobtainnewwarningandinstructionlabelsfromthemanufacturer
forplacementontheblanketdirectlyovertheexistinglabels.
• Do inspect the insulation blanket frequently to make certain it
doesnotsag,therebyobstructingcombustionairow.
coMBustIon aIr and ventIlatIon
Agaswaterheatercannotoperateproperlywithoutthecorrectamount
ofairforcombustion.Donotinstallinaconnedareasuchasacloset,
unlessyouprovide air as shown in the “Facts to Consider About
Location”section.Neverobstructtheowofventilationair.Ifyouhave
anydoubtsorquestionsatall,callyourgassupplier.Failuretoprovide
theproper��amountofcombustionaircanresultinareorexplosion
andcausedeath,seriousbodilyinjury,orpropertydamage.

FIGURE 5.

Ifthiswaterheaterwillbeusedinbeautyshops,barbershops,cleaning
establishments,orself-servicelaundrieswithdrycleaningequipment,
itisimperativethatthewaterheater(s)beinstalleddirectventsothat
allairforcombustionandventilationistakenfromoutdoors.
Propellantsofaerosol sprays and volatile compounds, (cleaners,
chlorinebasedchemicals,refrigerants,etc.)inadditiontobeinghighly
ammableinmanycases,willalsoreacttoformcorrosivehydrochloric
acidwhenexposedtothecombustionproductsofthe waterheater.
Theresultscanbehazardous,andalsocauseproductfailure.
applIances In unconfIned spaces
unconfIned spaceis space whose volume is not less than
50cubicfeetper1,000Btuperhour(4.8cubicmetersperkW)ofthe
aggregateinputratingofallappliancesinstalledinthatspace.Rooms
communicatingdirectlywiththe spaceinwhich theappliancesare
installed,throughopeningsnotfurnishedwithdoors,areconsidered
apartoftheunconnedspace.
Inunconnedspaces in buildings, inltration may be adequate to
provideairfor combustion, ventilation and dilution of ue gases.
However, in buildingsof tight construction (for example, weather
stripping,heavilyinsulated,caulked,vaporbarrier,etc.),additionalair
mayneedtobeprovidedusingthemethodsdescribedin“Appliances
inConnedSpace”thatfollows.”
applIances In confIned spaces

confIned spaceisaspacewhosevolumeislessthan50cubic

feetper1,000Btuperhour(4.8cmperkW)oftheaggregateinput

ratingofallappliancesinstalledinthatspace.

Whendrawingcombustionairfrominsideaconventionallyconstructed

buildingtoaconfined space,suchaspace shouldbeprovided

withtwopermanentopenings.ONEWITHIN12INCHES(30cm)

OFTHEENCLOSURETOPANDONEWITHIN12INCHES(30

cm)OFTHEENCLOSUREBOTTOM.Eachopeningshouldhave