Rinnai EHFA400T48 User manual

Brand: Rinnai

Model: EHFA400T48

Type: User manual

This manual is also suitable for

Hotﬂo - Vitreous Enamel - Electric Hot Water

Operation & Installation Manual

Rinnai 2 HotoElectricStorageWaterHeaterOIM

CongratulationsonthepurchaseofyourHotoMainsPressureVitreousEnamelElectricStorageWaterHeater.

Wetrustyouwillhavemanyyearsofcomfortandenjoymentfromyourappliance.

IMPORTANT

BEFORE INSTALLING OR USING THIS APPLIANCE

Before proceeding with the operation or installation read this manual thoroughly and gain a full

understanding of the appliance, to ensure safe and correct installation and use.

This appliance must be installed in accordance with:

• Manufacturer’s Installation Instructions

• Current AS/NZS 3000 & AS/NZS 3500

• Plumbing Code of Australia (PCA)

• Local Regulations and Municipal Building Codes

including local OH&S requirements

This appliance must be installed, maintained and removed

ONLY by an Authorised Person.

For continued safety of this appliance it must be installed

and maintained in accordance with the manufacturer’s

instructions.

This Appliance complies

with current AS 3498

SAI GLOBAL LIC. WMKA21244

SAI GLOBAL LIC. WMKA00169

Rinnai 3 HotoElectricStorageWaterHeaterOIM

TABLE OF CONTENTS

Warnings & Safety 4

Regulatory �� 4

NoticeToVictorianConsumers �� 4

Safety�� 5

HydrogenGas�� 5

WaterTemperature �� 5

ScaldHazards �� 5

SafetyDevices �� 6

Pressure&TemperatureRelief(PTR)Valve �� 6

ExpansionControlValve(ECV) �� 6

Important Information 7

Anode �� 7

WaterQuality �� 7

OperationalOverview �� 7

TurningWaterHeatingSystem‘OFF’ �� 7

TurningWaterHeatingSystem‘ON’ �� 7

Draining �� 7

Care & Maintenance 8

SaveAServiceCall �� 8

PeriodicMaintenance&Servicing �� 8

Specications 9

ApplianceComponents�� 9

Table1.Dimensions �� 10

Installation Methods 11

Table2.Ratings&OtherSpecications ��11

HotWaterPlumbingSystemExample-NoTLD �� 12

HotWaterPlumbingSystemExample-WithTLD�� 12

Installation 13

HotWaterPlumbingsystemExample/Flow&ReturnPipeWork-NoTLD �� 13

HotWaterPlumbingSystemExample/Flow&ReturnPipeWork-WithTLD �� 13

Location �� 14

WaterQuality �� 14

MainsPressure �� 14

ThermostatSetting �� 15

ReducingTheRiskOfScalding �� 15

PlumbingConnections �� 15

Connectionstothewaterheater �� 15

WaterPipes �� 15

PressureandTemperatureRelief(PTR)Valve �� 16

ExpansionControlValve(ECV) �� 16

PressureLimitingValve(PLV) �� 16

ReliefValveDrainLines �� 16

ElectricalSupply �� 17

ElectricalConnections �� 17

Commissioning 18

WiringDiagrams �� 18

ThermostatSetting �� 18

Toll&turn‘ON’thewaterheater �� 19

Toturn‘OFF’thewaterheater �� 19

Contacts 20

Rinnai 4 HotoElectricStorageWaterHeaterOIM

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and to ensure

optimum performance.

Failure to carefully read and follow all instructions in this manual can result in equipment

malfunction, property damage, personal injury and/or death.

YourRinnaiHotoMainsPressureVitreousEnamelElectricStorageWaterHeaterhasbeen

certied by relevant plumbing and electrical authorities and the details are shown on data

plate.

WARNINGS:WHENIGNORED,CANRESULTINSERIOUSINJURYORDEATH.

CAUTIONS:WHENIGNORED,CANRESULTINMINORINJURYORPRODUCTDAMAGE.

REGULATORY

WARNING

This appliance shall be installed in accordance with these instructions and all regulatory

requirements which exist in your area including those in relation to manual lifting, working at

heightsandonroofs.Applicablepublicationsandregulationsmayinclude:

• AS/NZS3500NationalPlumbingandDrainage

• AS/NZS3000Wiringrules

• PlumbingCodeofAustralia(PCA)

• BuildingCodesofAustralia(BCA)

• LocalOccupationalHealthandSafety(OH&S)regulations

• LocalRegulationsandMunicipalBuildingCodes

DO NOToperatethissystembeforereadingthemanufacturersinstructions.

This appliance must be installed, commissioned and serviced by an authorised person in

accordancewithallapplicablelocalrulesandregulations.

Forcontinuedsafetyofthisapplianceitmustbeinstalled,operatedandmaintainedinaccordance

with the manufacturer’s instructions.

Thisapplianceisheavy,use2peopleormechanicalliftingdevice.Improperliftingmayresultin

serious injury.

Takecarewhenopeningorunpackingthisappliance.Failuretodosomayresultinseriousinjury

or product failure.

DO NOT modify the electrical wiring of this appliance. If the control power wiring is damaged

ordeterioratedthenitmustbereplacedbyanauthorisedperson.Failuretodosomayresultin

electricshock,re,seriousinjuryorproductfailure.

Removaloftheaccesscoversofwaterheatingsystemwillexpose240VwiringandMUSTOnly

beremovedbyanauthorisedperson.

CareshouldbetakennottotouchthepipeworkasitmaybeHOT!

DO NOT place articles on or against this appliance.

DO NOTstorechemicalsorammablematerialsnearthisappliance.

DO NOT operate with collectors or covers removed from this appliance.

DO NOT activate pump unless cylinder is full of water.

Thisapplianceisnotsuitableforuseasadomesticspapoolorswimmingpoolheater.

NOTICE TO VICTORIAN CONSUMERS

WARNING

ThisapplianceMUST BEinstalledbyapersonlicensedwiththeVictorianBuildingAuthority.

ONLY a licensed person will have insurance protecting their workmanship.

So make sure you use a licensed person to install this appliance and ask for your Compliance

Certicate.

ForfurtherinformationcontacttheVictorianBuildingAuthorityon1300815127

IMPORTANT

WARNINGS & SAFETY

Rinnai 5 HotoElectricStorageWaterHeaterOIM

SAFETY

WARNING

ThisapplianceisNOTintendedforusebypersons(includingchildren)withreducedphysical,

sensoryormentalcapabilities,orlackofexperienceandknowledgeunlesstheyhavebeengiven

supervision or instruction concerning use of the appliance by a person responsible for their

safety.

ChildrenshouldbesupervisedtoensurethattheyDONOT play with the appliance.

Hydrogen Gas

Ifthehotwaterheaterisnotusedfortwoweeksormore,aquantityofhydrogengas,whichishighlyammable,

mayaccumulateinthewaterheater.Todissipatethissafety,itisrecommendedthatanonelectricallyoperated

hottapbeturnedonforseveralminutesatasink,orbath,butnotadishwasherorotherappliance.Duringthis

proceduretheremustbenosmoking,openameoranyelectricalapplianceoperatingnearby.Ifhydrogengasis

dischargedthroughthetap,itwillprobablymakeasoundlikeairescaping.

Water Temperature

TomeetregulatoryrequirementsthetemperatureofstoredwaterMUST NOT belessthan60°C.Thethermostat

onyourwaterheaterisfactorypre-setto70°C.Thethermostatsettingcanbeadjustedbetween60°Cand70°C

byanelectricianorothersuitablyqualiedtradesperson.

WARNING

ThethermostatsettingmustonlybeadjustedbyanElectricianorothersuitablyqualiedtrades

person.

TheaccesscovertotheelementandthermostatmustonlyberemovedbyanElectricianorother

suitablyqualiedtradesperson.

SCALD HAZARDS

Hot Water can cause scalds.

Children, disabled, and the elderly are at the highest risk of

being scalded.

Feel water temperature before bathing or showering.

Scalds from hot water taps can result in severe injuries to

young children.

Scalds can occur when children are exposed directly to hot

water when they are placed into a bath which is too hot.

Always......

Testthetemperatureofthewaterwithyourelbowbeforeplacingyourchildinthebath,alsocarefullyfeel

waterbeforebathingorshoweringyourself.

Supervisechildrenwhenevertheyareinthebathroom.

Makesurethatthehotwatertapisturnedotightly.

Consider.....

Installingchildprooftapcoversorchildresistanttaps(bothapproacheswillpreventasmallhandbeing

abletoturnonthetap).

Installing tempering valves or thermostatic mixing valves which reduce the hot water temperature delivered

tothetaps.Yourlocalplumbingauthoritymayalreadyrequirethatthesebetted.Contactyourinstaller

orlocalplumbingauthorityifindoubt.

Never….

Leave a toddler in the care of another child. They may not understand the need to have the water

temperature set at a safe level.

DANGER BEWARE OF

SCALDING HAZARDS

WARNINGS & SAFETY

Rinnai 6 HotoElectricStorageWaterHeaterOIM

SAFETY DEVICES

ForsafeoperationthiswaterheateristtedwithacombinationPressure&TemperatureReliefValve,athermostat

andanover-temperaturecutoutforeachheatingelement.

WARNING

DO NOT tamper with or remove safety devices.

DO NOToperatethiswaterheaterunlessallsafetydevicesarettedandinworkingorder.

Theoperationofthethermalcutoutindicatesapossiblydangeroussituation.DO NOT reset the

thermalcutoutuntilthewaterheaterhasbeenservicedbyaqualiedperson.

Pressure & Temperature Relief (PTR) Valve

Thisvalveislocatednearthetopofthewaterheaterandisessentialforsafeoperation.

WARNING

DO NOT sealorblocktheoutletofthePTRvalveoritsdrainpipe.

DO NOT replacethePTRvalvewithonethathasahigherpressureratingthanisspeciedfor

the water heater.

ThePTRvalveshouldbecheckedforperformanceorreplacedatintervalsnotexceeding5years,ormorefrequently

inareaswithahighincidenceofwaterdepositsbyaqualiedperson.Theeasinggearmustbeoperatedatleast

onceeverysixmonthsormorefrequentlyinareaswithahighincidenceofwaterdeposits.

WARNING

Failure to do this may result in the water heater cylinder failing or under certain circumstances,

exploding.Waterdischargedwillbeveryhot.Exercisecaretoavoidscaldinjury.Ifthevalvedoes

notsealagainwhentheeasinggearisclosed,contactRinnaitoarrangeinspectionbyaqualied

person.

Itisimportantyouraiseandlowertheeasinggeargently.Ifthevalvedoesnot

dischargewaterwhentheeasinggearleverislifted,theremaybeaserious

problemandthepowersupplyinthemeterbox(theswitchmarked‘Water

heater’or‘hotwater’)ortheisolatingswitchinstallednearthewaterheater

mustbeswitchedoimmediately.ContactRinnaitoarrangeinspectionby

aqualiedperson.

ItisnormalforthePTRvalvetoreleaseasmallquantityofwaterthroughthedrainpipeduringheating.Ifthevalve

dribblesorleakscontinuously,tryeasingthevalvegearforafewseconds.Thismaydislodgeanyforeignmatter

andstopleakage.Ifleakagedoesnotstoptheremaybeaproblemasdetailedbelow:

• Ifthereareheavyowsofwateruntilthewaterheateriscoldwhichthenstopsuntilthewaterreheatstheremay

beaseriousproblemandthepowersupplyinthemeterbox(theswitchmarked‘Waterheater’or‘hotwater’)or

theisolatingswitchinstallednearthewaterheatermustbeswitchedoimmediately.ContactRinnaitoarrange

inspectionbyaqualiedperson.

• Ifthereisasteadyowforlongperiods,oftenatnight,itmaybeasaresultofthewaterpressureexceedingthe

designpressureofthewaterheater.ContactyourinstallingplumberasaPressureLimitingValve(PLV)may

berequired.

Expansion Control Valve (ECV)

An ECV is recommended in all geographical areas where the water supply has a tendency to cause scaling,

includingSouthAustraliaandWesternAustralia.LocalregulatoryauthoritiesmayrequirethatanECVbetted.

TheECVistobesuppliedandttedbytheinstaller.RefertothesectionWaterQualityformoreinformationon

scalingwater.

IfanECVistted,operatetheeasinggearatleastonceeverysixmonthstoremoveanydepositsandtoverify

thatitisnotblocked.

TheECVshouldbecheckedforperformanceorreplacedatintervalsnotexceeding5years,ormorefrequentlyin

areaswithahighincidenceofwaterdepositsbyaqualiedperson.

ItisnormalanddesirablethattheECVallowsasmallquantityofwatertobedischargedthroughthedrainpipe

duringtheheatingcycle.Ifthevalvedribblesorleakscontinuously,operatetheeasinggearforafewseconds.This

maydislodgeanyforeignmatterandstopleakage.IfleakagedoesnotstopContactRinnaitoarrangeinspection

byaqualiedperson.

Gently lift lever

until water flows

from drain line,

lower lever gently

to close

WARNINGS & SAFETY

Rinnai 7 HotoElectricStorageWaterHeaterOIM

ANODE

Thewaterheater isttedwith asacricial anode toextend it’s life.Itwill slowlydissipatewhilst protectingthe

cylinder.Thelifeofthewaterheatermaybeextendedbyarrangingforanauthorisedpersontoinspecttheanode

andreplaceitifrequired.Itisrecommendedthattheanodebeinspectedatleastevery5years.Thefactorytted

RinnaianodeisMagnesiumbased.Thisanodeissuitablewhenthetotaldissolvedsolids(TDS)contentinthe

watersupplydoesnotexceed600mg/L,whichisthecaseinmostareas.Inareaswherethetotaldissolvedsolids

(TDS)contentinthewatersupplyexceeds600mg/LtheRinnaialuminiumbasedanodeisrequired.

WATER QUALITY

Thewaterqualityofmostpublicsuppliesissuitableforthewaterheatingsystem.Thewaterqualityfrombore

wellsis generally unsuitablefor thewater heating system.Refer tothe ‘Warranty Conditions’ forwater quality

parametersandhowtheyaectthewarrantyconditions.Ifindoubtaboutthewaterquality,haveitcheckedagainst

theparameterslistedinthewarrantyconditions.Ifsludgeorforeignmatterispresentinthewatersupply,asuitable

strainerltershouldbeincorporatedinthewatersupplytothesystem.

OPERATIONAL OVERVIEW (Howthehotwatersystemworks)

Single Element Model: A vitreous enamel lined steel cylinder stores water which is heated by a single

thermostaticallycontrolledheatingelement,locatedatthebaseofthecylinder.Thewaterheaterconnectsdirectly

tothemainswatersupply.TheheatingelementcanbeconnectedtoaContinuousorO-Peakelectricitysupply.

Thecontinuoussupplyisappropriatewhenthewaterheatercapacityislessthanthedailyusageofhotwater.The

O-Peaksupplyisappropriatewhenthewaterheatercapacityexceedsthedailyusageofhotwater.TheO-Peak

supplyallowsheatingonlyforsetperiodsandavolumeofwatersucientfordailyusageisheatedduringtheset

periodandstored.TheO-Peaksupplyisusuallycheaper.Electricitysupplytypesandtarisvaryaccordingtothe

localelectricityauthority.

Twin Element Model:Avitreousenamellinedsteelcylinderstoreswaterwhichisheatedbyatwinthermostatically

controlledheatingelements,oneelementislocatedatthebaseofthecylinder,whiletheotherislocatednearthe

top.Thewaterheaterconnectsdirectlytothemainswatersupply.Thebottomheatingelementheatsthewhole

contentsofcylinderandTopheatingelement(booster)onlyoperatesduringthehighdemandperiodstoheatthe

upperportionofthecontentsofthecylinder.Thetwoheatingelementsarewiredfornon-simultaneousoperation,

sothat onlyone heatingelement canoperate ata time.Thebottom heatingelement canbe connectedto an

O-Peakelectricitysupply,andthetopheatingelementtoacontinuouselectricitysupply.

Turning Water Heating System ‘OFF’

Ifthewaterheaterisnotgoingtobeusedforonlyafewdays,wesuggestyouleaveitswitchedon.Ifitisnecessary

toswitchothewaterheater,theswitchisusuallymarkedandlocatedintheelectricitymeterboxofthebuilding.

Turning Water Heating System ‘ON’

Switchontheelectricsupplytotheheatingelements.Theswitchisusuallymarkedandlocatedintheelectricity

meterboxofthebuilding.Waterheatingwillnowoccurasrequired.Itmaytakeanumberofhoursbeforehotwater

isavailable.

DRAINING

WARNING

DrainingMUST BE carriedoutbyaqualiedperson.

WatermaybeHOT during draining.

Drainthewaterheaterasfollows:

1. Isolateorturn‘OFF’thewaterheaterattheelectricitysupply.

2. Closethecoldwaterisolationvalveattheinlettothewaterheater.

3. Closeallhotwatertaps.

4. OperatethePTRvalveeasinggear-gently.OperatingthePTRvalveeasinggearwillrelievethepressure

inthewaterheater.

5. Undothecoldwaterinletunion.Attachahosetothewaterheatersideoftheunion.Lettheotherendofthe

hosegotoadrain.

6. OperatethePTRvalveeasinggearagain.Thisallowsairintothewaterheaterandwillresultinwaterdraining

throughthehose.

IMPORTANT INFORMATION

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

Rinnai 9 HotoElectricStorageWaterHeaterOIM

APPLIANCE COMPONENTS

1. DataandWarningLabels

2. Leftcoldwaterinlet

Connection RP 3/4" (20mm)

3. Element+ThermostatCover–Electricalsupplyconnection*

Removal & connection by qualied persons only, in accordance with AS/NZS 3000

4. PTRvalvedrainpipe(SuppliedbyInstaller)

Copper only drain in accordance with AS/NZS 3500.4

5. Element+ThermostatCover (Twinelementmodelsonly)*

Removal by qualied persons only

6. Lefthotwateroutlet

Connection RP 3/4" (20mm), use a union connection and insulate hot water pipe

7. PTRvalveconnection

RP 3/4" (20mm), use supplied PTR Valve with 1/2" Reducing Bush

8. Anodecap

9. DuplicatePTRvalveconnection(25and50litremodelsonly)

10. Duplicatehotwateroutlet

11. DuplicatePTRvalvedrainpipe(SuppliedbyInstaller)

12. Duplicatecoldwaterinlet

13. Waterheatersupport

In accordance with AS/NZS 3500.4

14. SafeTray&drain(NotSupplied)

May be required to avoid property damage in accordance with AS/NZS 3500.4

NOTE

*RemovalandconnectionbyqualiedpersonsONLY,inaccordancewithAS/NZS3000

ValveswithpressureratingsotherthanspeciedareunsuitableandMUST NOTbeused.

WATER HEATER - located closest to most frequently used outlet - Access for service in the

installed position.

7 8

SPECIFICATIONS

Rinnai 10 HotoElectricStorageWaterHeaterOIM

TABLE 1. DIMENSIONS & WEIGHT

INLETS

OUTLETS

P&TR

Plumbing connections are duplicated

(Dual Handed) on each side.

Models Hoto

25L

Hoto

50L

Hoto

80L

Hoto

125L

Hoto

160L

Hoto

160L-D

Hoto

250L

Hoto

315L

Hoto

400L

Hoto

160L Twin

Element

Hoto

250L Twin

Element

Hoto

315L Twin

Element

Hoto

400L Twin

Element

A452 694 900 1245 1620 1313 1477 1770 1840 1620 1477 1770 1840

B490 490 590 590 564 600 674 674 744 564 674 674 744

C415 415 515 515 500 537 605 605 675 500 605 605 675

D297 524 683 1020 1419 1107 1248 1541 1587 1419 1248 1541 1587

E153 158 225 225 162 186 210 210 237 162 210 210 237

F80 80 155 155 87 110 135 135 163 87 135 135 163

G- - - - - - - - - 1039 985 1225 1263

All dimensions are in mm unless otherwise stated

SPECIFICATIONS

Rinnai 11 HotoElectricStorageWaterHeaterOIM

TABLE 2. RATINGS & OTHER SPECIFICATIONS

NOTE

APLVMUSTBEFITTEDIFTHEMAINSPRESSUREEXCEEDSTHELIMITSSHOWN.IFTHEMAINS

PRESSUREISWITHINTHELIMITSSHOWNFITMENTOFTHEPLVISOPTIONAL,HOWEVER,IT

ISRECOMMENDEDTHATTHEPLVISFITTEDINALLINSTALLATIONSASITAIDSWATERAND

ENERGYCONSERVATION.

Hoto

25L

Hoto

50L

Hoto

80L

Hoto

125L

Hoto

160L

Hoto

250L

Hoto

315L

Hoto

400L

Hoto 160L

Compact

Model Code HFE EHFA EHFD

Storage Capacity (L) 33 55 84 140 172 279 334 420 170

Hot Water Delivery (L) 25 50 80 125 160 250 315 400 160

Element Size (kW) 1.8, 2.4,

3.6

1.8, 2.4,

3.6

1.8, 2.4,

3.6

1.8, 2.4,

3.6

1.8, 2.4,

3.6

2.4, 3.6,

4.8

2.4, 3.6,

4.8 3.6, 4.8 2.4,3.6

Total Height (mm) A 452 694 900 1245 1620 1477 1770 1840 1313

Width incl. PTR Valve (mm) 490 490 590 590 564 674 674 744 600

Diameter (mm) B 415 415 515 515 500 605 605 675 537

Outlet Height (mm) C 297 524 685 1020 1419 1248 1541 1587 1107

Inlet Height (mm) D 153 158 225 225 162 210 210 237 186

Electrical Entry -

Lower (mm) E 80 80 155 155 87 135 135 163 110

Electrical Entry -

Upper (mm) F N/A N/A N/A N/A 1039 985 1225 1263 N/A

Packaged Weight (kg) 23 29 48 60 60 70 82 96 56

Boost Capacity

(Twin element only) (L) N/A N/A N/A N/A 40 49 60 81 N/A

PTR Valve - included (kPa) 1000

ECV (kPa) 850

Max. Inlet Pressure

with ECV (kPa) 680

PLV with ECV (kPa) 500

Max. Inlet Pressure

without ECV (kPa) 800

PLV without ECV (kPa) 500

Max. Thermostat Setting

(°C) 70°C

Ingress Protection Rating IPX4

Electrical Supply 240V-@50Hz

Tank Body Colour White Dune

Hot and cold water

connection Rp 3/4 (20mm)

SPECIFICATIONS

Rinnai 12 HotoElectricStorageWaterHeaterOIM

HOT WATER PLUMBING SYSTEM EXAMPLE - NO TLD

*PTR VALVE

(Supplied)

KITCHEN

LAUNDRY

NON TEMPERED SUPPLY

BATHROOM

ENSUITE

TO DRAIN

COLD

SUPPLY

Isolating

Valve

*ECV

TO DRAIN

Non-return

Valve

*PLV

WATER

HEATER

(Not Supplied)

CAUTION

ValveswithpressureratingsotherthanspeciedareunsuitableandMUST NOT beused.

*Forratingssee"Table2.Ratings&OtherSpecications"onpage11.

HOT WATER PLUMBING SYSTEM EXAMPLE - WITH TLD

KITCHEN

LAUNDRY

ENSUITE

BATHROOM

TEMPERED

SUPPLY Temperature

Limiting Device

(TLD)

COLD

SUPPLY

Non-return

Valve

*PLV

Isolating

Valve

Isolating

Valve

*PLV

*ECV

(OR)

WATER

HEATER

Non-return Valve

COLD

SUPPLY

Non-return

Valve

Non-return

Valve

WATER

HEATER

Temperature

Limiting Device

(TLD)

Non-return

Valve

*PTR VALVE

(Supplied)

TO DRAIN

*ECV

TO DRAIN

TO DRAIN (Not Supplied)

TEMPERED

SUPPLY

*PLV

NON TEMPERED SUPPLY

Isolating

Valve

Non-return

Valve

CAUTION

ValveswithpressureratingsotherthanspeciedareunsuitableandMUST NOT beused.

*Forratingssee"Table2.Ratings&OtherSpecications"onpage11.

ItmaybearequirementthatthehotandcoldwatersupplypressurestoaTemperatureLimitingDevice(TLD)are

equal.Ifthisisthecase,aPLVwiththesamepressureratingasthePLVforthehotwaterisrequiredfortheTLD

asshown.

INSTALLATION METHODS

Rinnai 13 HotoElectricStorageWaterHeaterOIM

HOT WATER PLUMBING SYSTEM EXAMPLE / FLOW & RETURN PIPE WORK - NO TLD

COLD

SUPPLY

Isolating

Valve

*ECV

TO DRAIN

Non-return

Valve

*PLV

KITCHEN

LAUNDRY

NON TEMPERED SUPPLY

BATHROOM

ENSUITE

*PTR VALVE

(Supplied)

TO DRAIN

WATER

HEATER

(Not Supplied)

Non-return

Valve

Isolating

Valve

Isolating

Valve

Flow & Return

Pump

CAUTION

ValveswithpressureratingsotherthanspeciedareunsuitableandMUST NOT beused.

*Forratingssee"Table2.Ratings&OtherSpecications"onpage11.

HOT WATER PLUMBING SYSTEM EXAMPLE / FLOW & RETURN PIPE WORK - WITH TLD

COLD

SUPPLY

Isolating

Valve

*ECV

TO DRAIN

Non-return

Valve

*PLV

KITCHEN

LAUNDRY

NON TEMPERED SUPPLY

BATHROOM

ENSUITE

TO DRAIN

*PTR VALVE

(Supplied)

WATER

HEATER

(Not Supplied)

Non-return

Valve

Non-return

Valve

Non-return

Valve

Isolating

Valve

Isolating

Valve

Flow & Return

Pump

Temperature

Limiting Device

(TLD)

CAUTION

ValveswithpressureratingsotherthanspeciedareunsuitableandMUST NOT beused.

*Forratingssee"Table2.Ratings&OtherSpecications"onpage11.

1. Thisschematicisanexampleonly,variationsmayalsobesuitable.

2. TemperedwaterfromaTLDCANNOTbere-circulated.TheTLDMUST BE positioned in

adeadleg,branchingothecirculatedhotwaterowandreturnpipe.

INSTALLATION

Rinnai 14 HotoElectricStorageWaterHeaterOIM

ThisapplianceMUSTBEinstalledbyaqualiedpersoninaccordancewith:

• Manufacturersinstallationinstructions

• CurrentAS/NZS3000WiringRules

• CurrentAS/NZS3500.4PlumbingandDrainage-HeatedWaterServices

• Alllocalregulatoryrequirements

ThisapplianceisNOTsuitableforuseasaspaorswimmingpoolheater.

LOCATION

TheRinnaiHotoelectricstoragewaterheaterrangehaveaningressprotectionratingofIPX4making80Lto

400Lmodelssuitableforinternalorexternalinstallation.However,Hoto25Land50Lmodelscanonlybeinstalled

indoors.

Thewaterheatershouldbeplacedascloseaspracticabletothemostfrequentlyusedhotwateroutletpointor

pointstominimizethedelaytimeforhotwaterdelivery.Thiswillusuallybethekitchentap.Forinstallationswhere

thedistancebetweenthewaterheaterandtheoutletsisconsiderable,aowandreturnsystemcanbeusedwhich

willminimizethewaitingtimeforhotwaterdelivery.

Itisrecommendedthatthewaterheaterisinstalledatgroundoroorlevel.ItMUSTBEinstalledinavertically

uprightposition.ThewaterheaterMUSTBEaccessiblewithouttheuseofaladderorscaold.Installationintoroof

spacesMUSTcomplywithlocalregulatoryauthorityrequirements.

EnsurethePTRvalve,isolatingvalves,accesscovers,thermostatsandheatingelementshavesucientclearances

andareaccessibleforserviceandremoval.TheinformationontheratingplatesMUSTalsobereadable.

The water heater MUST BE installed in free standing mode on a level and stable base in a manner that is

acceptabletolocalauthorities.Avoidsituationsthatmayresultinpoolingofwateraroundthebaseofthewater

heater.

Wherepropertydamagecanoccurasaresultofwaterleakageinanindoorinstallation,thewaterheaterMUST

BEinstalledwithasafetray(overowtray)anddrain.Construction,installationanddrainingofthesafetrayMUST

complywithlocalregulatoryrequirementsand.AS/NZS3500.4alsorequirestheuseofasafetrayforparticular

situations.

WATER QUALITY

Thewaterqualityofmostpublicsuppliesissuitableforthewaterheater.Waterqualityfromborewellsisgenerally

unsuitable.Refertothe‘WarrantyConditions’forwaterqualityparametersandhowtheyaectwarranty.Ifindoubt

aboutwaterquality,haveitcheckedagainsttheparameterslistedinthewarrantyconditions.

Ifsludgeorforeignmatterispresentinthewatersupply,asuitablestrainerorltershouldbeincorporatedinthe

watersupplytothewaterheater.

Scalingwaterisdenedashavingatotalhardnessinexcessof200mg/litre(expressedascalciumcarbonate)or

aSaturationIndexinexcessof+0.4.AreasthathaveascalingwatersupplyincludeSouthAustraliaandWestern

Australia.Inascalingwatersupply,calciumcarbonateandpossiblyothercompoundsaredepositedoutofthe

waterontoanyhotmetallicsurfacesandformascale.

InareasofscalingwateranECVMUSTBEttedonthecoldwaterlinebetweenthenon-returnvalveandthe

connectiontothewaterheatertoprotectthePTRvalveandthewaterheater.Localregulatoryauthoritiesmay

requirethatanECVbetted.TheECVistobesuppliedandttedbytheinstaller.

MAINS PRESSURE

TheHotoelectricstoragewaterheaterrangeutilisemainspressurebyconnectingdirectlytothemainswater

supply.IfthemainswatersupplypressureinyourareaexceedstheratedpressureofthewaterheateraPLV

MUSTBEtted.

Themainswatersupplypressureshouldbegreaterthan350kPafortruemainspressureoperationalperformance

tobeachieved.

INSTALLATION

Rinnai 15 HotoElectricStorageWaterHeaterOIM

THERMOSTAT SETTING

Thethermostatsettingcanbeadjustedbetween60°Cand70°C.Ithasbeenfactorypre-setto70°C.

WARNING

Thisappliancemaydeliverwaterathightemperature.RefertothePlumbingCodeofAustralia

(PCA), local requirements and installation instructions to determine if additional delivery

temperature control is required.

WARNING

ThethermostatsettingsMUST ONLYbeadjustedbyaqualiedperson.

REDUCING THE RISK OF SCALDING

Thiswaterheatercandeliverwaterattemperatureswhichcancausescalding.Children,disabledandtheelderly

areatthehighestriskorbeingscalded.

Local regulatory requirements and the requirements of AS/NZS 3500.4 MUST BE considered regarding

temperaturelimitationsofhotwater deliveredtoareasusedprimarilyfor personalhygienesuchasbathrooms

andensuites.Thedeliverytemperaturemaybelimitedto45°Cforearlychildhoodcentres,primaryandsecondary

schoolsandnursinghomesorsimilarfacilitiesfortheyoung,aged,sickorpeoplewithdisabilitiesand50°Cforall

otherbuildings.ThesetemperatureswillreducetheriskofscaldinjuryandcanbeachievedbytheuseofaTLD,

forexampleathermostaticmixingvalveortemperingvalve.

RinnairecommendthatanapprovedTLDisttedintothehotwaterpipeworkfromthewaterheatertoareasused

primarilyforpersonalhygienesuchasbathroomsandensuitestoreducetheriskofscalding.

Refertotheinstallationcongurations"HotWaterPlumbingSystemExample-WithTLD"onpage12and"Hot

WaterPlumbingSystemExample/Flow&ReturnPipeWork-WithTLD"onpage13.

PLUMBING CONNECTIONS

Connections to the water heater

RefertoSpecicationsfortheplumbingconnectionsizesandlocation(Table1)andthespeciedpressureratings

ofvalves(Table2).Referalsotothediagramsunder“InstallationCongurations”.

WARNING

ValveswithpressureratingsotherthanspeciedMUST NOTbeused.

Anisolationvalveandnon-returnvalveMUSTBEttedinthecoldwatersupplytothewaterheatersothewater

heatercanbeisolated.Combinationisolationandnon-returnvalvesuchas'Duo'or'Trio'valvesaresuitablefor

thispurpose.

IsolationvalvesMUSTNOTbetteddirectlytotheappliance.Usedisconnectionunionsbetweenthewaterheater

andthevalvestoallowthewaterheatertobedisconnectedfrompipeworkatalaterdate.

Purgepipework toremove swarfand otherforeign matterbeforenal connectionto thewater heaterto avoid

damagetothewaterheater.

IfolivecompressionttingsareusedforconnectionstheolivesMUSTBEmetallicsuchasbrassorcopper.Only

approvedthreadsealingtapeorsealantshouldbeused.

Water Pipes

Pipesizingshouldbecarriedoutbypersonscompetenttodosoforeachindividualinstallationinaccordancewith

localregulatoryrequirementsandtakeintoconsiderationthespecicationsofthewaterheater.

ThecoldsupplypipetoandhotwaterpipefromthewaterheaterMUSTBEinsulatedinaccordancewithlocal

regulatoryrequirementsandAS/NZS3500.4tooptimiseperformanceandenergyeciency.InsulationMUSTBE

weatherproofandUVresistantifexposed.

Thehotwaterpipefromtheoutletofthewaterheatershouldalsobeconguredintheshapeofa“heattrap”toaid

energyeciencyinaccordancewithlocalregulatoryrequirementsandAS/NZS3500.4.

Topreventdamagetothewaterheaterwhenattachingpipeclipsorsaddlestothejacket,itisrecommendedthat

selfdrillingscrewswithamaximumlengthof12mm areused.Ifdrillingisrequiredtakeextremecare NOT to

penetratetheinnercylinder.DamagetotheinnercylinderisNOTcoveredunderwarranty.

INSTALLATION

Rinnai 16 HotoElectricStorageWaterHeaterOIM

Pressure and Temperature Relief (PTR) Valve

AcombinationPTRvalveissuppliedwiththewaterheater.ItisanimportantsafetydeviceandMUSTBEttedin

allinstallationsbeforethewaterheaterisoperated.

DONOTusethevalveifthesensingprobehasbeenbentoritisdamagedinsomeotherway.

ThePTRvalveistobescrewedtotheconnectionmarked“PTRValve”atthetopofthewaterheater.

ThethreadMUSTBEsealedwithanapprovedsealingtape.MakesurethesealingtapedoesNOThangover

theendofthethreadofthevalveasthismayblockthewaterwayandpreventthevalvefromoperatingproperly.

ToscrewthevalveintothewaterheaterconnectionuseawrenchonthespanneratsandNOTthevalvebody.

Leavethevalveoutletpointingdownwards.AcopperdrainpipeMUSTBEttedtothevalveoutletinaccordance

withthesection"ReliefValveDrainLines"onthebottomofpage16.

The valve body MUSTBE insulated in accordance with local regulatory requirements andAS/NZS 3500.4 to

optimiseperformanceandenergyeciency.InsulationMUSTBEappliedinamannerthatensuresitdoesNOT

interferewiththeoperationofthevalve.InsulationmaterialMUSTBEweatherproofandUVresistantifexposed.

Expansion Control Valve (ECV)

InareasofscalingwateranECVMUSTBEttedonthecoldwaterlinebetweenthenon-returnvalveandthe

connectiontothewaterheatertoprotectthePTRvalveandthewaterheater,asperthediagramsunder“Installation

Congurations”.ItMUSTBEthelastvalveonthecoldinletbeforethewaterheater.

LocalregulatoryauthoritiesmayrequirethatanECVbetted.TheECVistobesuppliedandttedbytheinstaller.

RefertothesectionWaterQualityformoreinformationonscalingwater.

AcopperdrainpipeMUSTBEttedtothevalveoutletinaccordancewiththesection"ReliefValveDrainLines"

onthebottomofpage16.

The valve body MUSTBEinsulated in accordance with local regulatory requirements andAS/NZS 3500.4 to

optimiseperformanceandenergyeciency.InsulationMUSTBEappliedinamannerthatensuresitdoesNOT

interferewiththeoperationofthevalve.InsulationmaterialMUSTBEweatherproofandUVresistantifexposed.

Pressure Limiting Valve (PLV)

APLVistobettedifthesupplypressureexceedsthelimitsshowninTable2“Ratings&OtherSpecications"

onpage11asperthediagramsunder“InstallationCongurations”.ThePLVistobesuppliedandttedbythe

installer.

Relief Valve Drain Lines

CopperdrainlinesofsizeDN15MUSTBEttedtotheECV(iftted)andthePTRvalve.Usedisconnectionunions

toconnectdrainlinestothevalves.

ThecongurationofdrainlinesMUSTBEinaccordancewithlocalregulatoryrequirementsandtherequirements

ofAS/NZS3500.4.

Thelengthshouldbeasshortaspossibleonacontinuousdownwardslopewithnorestrictions.Lengthshould

NOTexceed9metreswithnomorethanthree45°bends.Ifadrainlinedischargesintoatundish,thedrainline

fromthetundishMUSTNOTbelessthanDN20.ThedrainlinefromatundishMUSTmeetthesamerequirements

asdrainlinesfromreliefvalves.

Thedrain linesfrom thePTR valveand ECV(if tted)from an individualwater heatermay beinterconnected

subjecttolocalregulatoryauthorityrequirementsandAS/NZS3500.4.TheterminationpointMUSTalsocomply

withlocalregulatoryrequirementsandAS/NZS3500.4.DrainlinesMUSTNOTdischargeintoasafetray.

TheoutletofdrainlinesMUSTNOTbeobstructedandbepositionedsothattheyarereadilydiscerniblebutNOT

causeinjury,damageornuisance.

Inareaswherewaterpipesarepronetofreezing,drainlines MUSTBEinsulatedandNOTexceed300mmin

length.InthiscasethedrainlineMUSTdischargeintoatundishthroughanairgapofbetween75mmand150mm.

INSTALLATION

Rinnai 17 HotoElectricStorageWaterHeaterOIM

ELECTRICAL SUPPLY

WARNING

Mustbeinstalled,maintainedandremovedbyauthorisedpersonsinaccordancewithAS/NZS

3000 and all other relevant local regulations and municipal building codes including OH&S

requirements.

Ensureelectricwiringisinstalledproperly.Improperinstallationmaycausemalfunction,re,or

electric shock.

Theunitmustbeearthedfollowinglocalelectricalcodes.

AwaterheaterNOTttedwithapowercord&plugMUSThavetheheatingelementconnectedtoanindependent,

fused,AC240V50Hzpowersupplywithanisolatingswitchinstalledattheswitchboard,whichshalleectively

isolateallactivesupplyconductorsfromthecircuitandmeansfordisconnectionmustbeincorporatedinthexed

wiringinaccordancewiththewiringrules.

Ensurethepremiseswiringtothesystemiscapableofwithstandingthesystemelectricalload(refertoSpecications

-Table1forelectricalloaddetails).

ThepowersupplytoasingleelementmodelcanbeO-Peak(overnight),ExtendedO-Peak(overnightandday),

orContinuous(day).

The power supply to a twin element model should be O-Peak (overnight) to bottom heating element and

Continuoustothetopheatingelement.

Checktheavailabletariswiththelocalelectricitysupplier.TheO-Peak(overnight)isusuallythemosteconomical

forthecustomer.

Electrical Connections

WARNING

ThewaterheaterMUST BElledwithwaterpriortoconnectiontothepowersupply.

WARNING

ElectricalconnectionMUST BEcarriedoutbyaqualiedpersonandinaccordancewithAS/NZS

3000 'Wiring Rules' and local authority requirements

Disconnect all power prior to installation and commissioning. This appliance is designed for

singlephase240Volts,ACmainselectricaloperation.

All electrical connections MUST BEmadebyanauthorisedpersonandmustcomplywithall

localelectricalsupplyregulationsandAS/NZS3000.

NOTE

Thepremiseswiringtotheheatermustbecapableofwithstandingtheapplianceload.

Electricalaccessisviaa20mmholebeneaththeelementcoverformountingwithanapprovedweatherproof

electricalconduitnipple.Forentrytotheelementcoverremovethetwoxingscrews.

ConnectallACTIVEandNEUTRALwiresinaccordancewiththewiringdiagramwhichisalsoincludedattherear

oftheelementaccesscover.EnsuretheincomingEARTHwireissecurelyxedtotheearthpostprovidedonthe

heatercase.Inspectandensurethatallwiringlinksaresecurepriortoxingtheaccesscoverandturningthe

POWERON.

ToensuretheOver-temperatureandEnergyCut-outisset,pressthe(red)'reset'buttonontheThermostat.

Isolate all

sources of supply

prior to servicing

INSTALLATION

Rinnai 18 HotoElectricStorageWaterHeaterOIM

Wiring Diagrams

Thermostat Setting

The thermostat is adjustable from 60°C to 70°C. Turning the adjustment knob anticlockwise decreases the

temperaturesettingandturningitclockwiseincreasesthetemperaturesetting.Thewaterheaterasdeliveredwill

havethethermostatpresetto70°C.

WARNING

EnsurethepowersupplyisswitchedOFFbeforeremovingtheaccesscovertotheelementand

thermostat.

TheaccesscovertotheelementandthermostatMUST ONLY BEremovedbyanElectricianor

othersuitablyqualiedtradesperson.

ThethermostatsettingMUST ONLY BEadjustedbyanelectricianorothersuitablyqualied

trades person.

Afteradjustment,pressthe(red)‘Reset’Buttononthethermostatstoensuretheover-temperature

andenergycut-outisset.

Continuous - A

Off Peak - A

Neutral - N

Earth

BOTTOM ELEMENT

TWIN ELEMENTSINGLE ELEMENT

TOP ELEMENT

3 1

5 2

RESET

3 1

5 2

Active - A

Neutral - N

Earth

RESET

3 1

5 2

RESET

ST1204113 ST2207233

ST1204113

COMMISSIONING

Rinnai 19 HotoElectricStorageWaterHeaterOIM

WARNING

Commissioning activities MUST BEcarriedoutbyanauthorisedperson.

DO NOTswitchontheelectricpowersupplyuntilthewaterheaterislledcompletelywithwater.

TO FILL & TURN ‘ON’ THE WATER HEATER

1. Openallhotwatertapsinthebuilding,includingtheshower.

2. Openthecoldwaterisolationvalvetowaterheater.Airwillnowbeforcedoutofthetaps.

3. Closeeachtapwhenwaterrunsfreelywithoutairbubbles.

4. Checkallplumbingconnectionsandpipeworkforwaterleaks.

5. Connectthewaterheatertotheelectricitysupply,andturntheelectricpowersupply'ON'.

TO TURN ‘OFF’ THE WATER HEATER

Itmaybenecessarytoturnoawaterheaterafterinstallationandcommissioning,forexampleduringbuilding

activitiesorifthepremisesarevacant.

1. Isolateorturn'OFF'thewaterheaterattheelectricitysupply.

2. Closethecoldwaterisolationvalveattheinlettothewaterheater.

COMMISSIONING

S110801 20 HotoSeriesElectricStorageWH(NATIONAL)OIMIssuei-8/09/21

CONTACTS

Rinnai Australia Pty Ltd

ABN 74 005 138 769 | AU45204

100 Atlantic Drive, Keysborough, Victoria 3173

P.O. Box 460, Braeside, Victoria 3195

Tel: (03) 9271 6625

Fax: (03) 9271 6622

National Help Line

Tel: 1300 555 545* Fax: 1300 555 655

Monday to Friday, 8.00 am to 5.00 pm EST.

After Hours Hot Water Service Line

Tel: 1800 000 340*

*Cost of a local call higher from mobile or public phones.

For further information visit www.rinnai.com.au

or email enquiry@rinnai.com.au

Rinnai has a Service and Spare Parts network with

personnel who are fully trained and equipped to give

the best service on your Rinnai appliance. If your

appliance requires service, please call our National

Help Line. Rinnai recommends that this appliance be

serviced every year.

With our policy of continuous improvement, we

reserve the right to change, or discontinue at any time,

speciﬁcations or designs without notice.

Rinnai EHFA400T48 User manual

Brand: Rinnai

Model: EHFA400T48

Type: User manual

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Rinnai EHFA400T48 User manual

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