EHFA400S36 User Manual

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Rinnai 8 HotoElectricStorageWaterHeaterOIM

SAVE A SERVICE CALL

Checktheitemsbelowbeforerequestingaservice.Serviceandpartschargesmaybeincurredwhereitisfound

thatthereisnofaultwiththewaterheaterandtheissueisrelatedtotheplumbinginstallationorisduetothefailure

ofwaterorelectricsupplies.

Insu󰀩cientornohotwater

Is the electricity supply

connected?

Checkthattheisolatingswitchmarked“HOTWATER”or“WATERHEATER”atthe

meterboxisswitchedon.Checkalsothatanyisolatingswitchesinstallednearthe

waterheaterareswitchedon.

Checkthefuse orcircuitbreakermarked“HOTWATER” or“WATER HEATER”at

themeterbox.Repeatedfailureoffuseortrippingofcircuitbreakerindicatesafault

whichmustbeinvestigatedbyanauthorisedtradesperson.

IsyourunitaTwinElement

electricwaterheater?

Atwinelementmodel(non-simultaneous)musthaveacontinuouselectricitysupply

tothetopheatingelement.Checkthatthisisthecase.

Are you using more hot

waterthanyouthink?

Oftenitisnotrealizedhowmuchhotwaterisactuallyused.Thisappliesespecially

toshowering.Reviewhotwaterusage,especiallythetimetakenforshowering,and

investigatetheuseofowcontrolvalvesorWatersavingshowerroses.

Are water heater valves

dischargingexcessively?

Refertothesection“SafetyDevices”onpage6.

Thermostatsettings? Checkthetemperatureofhotwaterdeliveredwithathermometerplacedunderthe

closestoutlet(usuallythekitchensink)onanon-temperedhotwaterline.

This test should be done early in the morning after overnight electrical boosting

beforeanyhotwaterisused.Thetemperatureofthewaterdeliveredshouldbeat

least55°C(allowingforheatlossesinpipework).

If this is not the case, the temperature may need to be increased. Contact your

installerorRinnaitodiscussadjustingthethermostat.

Nowaterfromthehottap? Restrictioninthehottaporfailureofthecoldwatersupplytotheheater.

Checkforwaterowattheotherhottapsandthatthecoldwaterisolationvalveis

fullyopen.

HighElectricityBills

Ifyouthinkyourelectricity

bill is too high, check for

thesepossibilities.

If, after investigating, and

you still require assistance

contact Rinnai.

Youmaybeusingmorehotwaterthanyouthink.Thisappliesespeciallytoshowering.

Reviewhotwaterusage,especiallythetimetakenforshowering,andinvestigatethe

useofowcontrolvalvesor‘watersaving’showerroses.Investigaterecentchanges

tohotwaterusagepatterns.

Water heatervalvesmay bedischarging excessively.Refer tothe section“Safety

Devices”onpage6.

Theremaybehotwaterleakagesinhotwaterpipesortaps.Havethesecheckedand

rectiedbyaplumber.

Theremayhavebeenchangesinelectricitytari󰀨ssinceyourlastbill.

PERIODIC MAINTENANCE & SERVICING

Ifoverowtrayanddrainaretted,itistheusersresponsibilitytohavethesecheckedperiodicallytoensurethere

arenoblockages.

TheusershouldoperatetheeasinggearoftheECVandPTRvalve(iftted)every6monthsasdescribedunder

“SafetyDevices”onpage6.

Rinnaiservicenetworkpersonnelarefullytrainedandequipped.IfyourRinnaiappliancerequiresservicingcontact

Rinnaiasperthedetailsonthebackpageofthismanual.Rinnairecommendsthatthiscommercialappliancebe

inspectedandservicedbyaqualiedpersonevery12months.

TheECVandPTRvalveMUSTBEcheckedforperformanceorreplacedbyaqualiedpersonatintervalsnot

exceeding5yearsormorefrequentlyinareaswherethewaterisclassiedasscalingwater.Refertoboththe

“Anode”and“WaterQuality”onpage7forAnodeselection,inspectionandmaintenancerequirements).

Iftheelectricsupplyconduittothewaterheaterisdamaged,itMUSTBEreplacedbyaqualiedpersoninorder

toavoidahazard.

CARE & MAINTENANCE

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User Manual - Page 8