HRU ECO 4User manual

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SafetyWARNING• Donotusethisapplianceforfunctionsotherthanthosedescribedinthebooklet.

• After removing the appliance from its pack-aging,ensurethatitiscompleteandundam-aged. If indoubt contactHeatraeSadia.Donot leave thepackagingwithinreachofchil-drenortheinfirm.

• Certainfundamentalrulesmustbeobservedwhen using any electrical appliance, includ-ing:a)Nevertouchapplianceswithwetordamphandsb)Nevertouchapplianceswhilebarefoot.c)Donotallowchildrentousetheappliancewithoutsupervision.d)Superviseinfirmpersonswhenusingtheappliance.

• Storetheapplianceoutofthereachofchildrenandinfirmpersonsifyoudecidetodisconnectitfromthepowersupplyandnolongeruseit.

• Donotoperatetheapplianceinthepresenceof:Inflammablesubstancesorvapours(alcohols,insecticides,petrol,etc).

CAUTIONThefollowinggeneralinstructionsareimportant:• Follow the safety instructions to prevent fandamageandpersonalinjuries.

• Maintenanceinstructionsmustbefollowedtoprevent damageand/or excessivewear andtear.

• Thespecificationsinthismanualmaynotbemodified.

• Theunitmaynotbemodified.• Themotormodule isonlysuitable fora230V50Hza.csystemfittedwitha3ampfuse.

• Donotexpose theappliance to theweather(rain,sun,etc).

• Donotplaceobjectsontopoftheappliance.• Regularlyinspecttheapplianceforvisiblede-fects.Ifanyfaultsarefound,contactHeatraeSadiaimmediately.

• Theappliancemustonlybeinstalledbyapro-fessionallyqualifiedperson.

• Ensurethattheelectricalsystemtowhichtheapplianceisconnectedcomplieswithapplica-blestandards.

• Use a multi-polar switch with a minimumcontactgapof3mmtoinstalltheappliance.Switchofftheapplianceatthemainswitch.a)Iftheappliancedoesnotfunctioncorrectly.b) Before cleaning the outside of the appli-ance.c) If theappliance isnot tobeused foranylengthoftime.

• Becarefultoavoiddamagingtheelectriccir-cuit.

• Donotusetheappliancetocontrolactivationofwaterheaters,roomheatersetc,norshoulditdischarge into thefluesofanysuchappli-ances.

• Ensure that the appliance discharges into asingleduct (dedicated to thisproduct)whichisroutedtotheoutside.

• Theairtobeextractedfromthedwellingmustbe clean (i.e. free of grease, soot, chemicalandcorrosiveagents,explosiveorflammablemixtures).

• Keep the appliance intake and outlet grillesfreetoensureoptimumairflowatalltimes.

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SafetyElectronic componentsTheHRUECO4containspartswhichmaybelive.Consult a professionally qualified installer in theevent of an alleged fault. All repairs and mainte-nanceworkshouldbecarriedoutbyaprofessionallyqualifiedinstaller.

MaintenanceTheventilationunitshouldbeinspectedregularlyforcontamination.Electricallydischargetheunitbeforecarryingoutanyworkonit.Firstisolatetheunitfromthemainssupplyandmakesurethattheunitisnotre-connectedorthesupplyplugisnotreinsertedinthe socket by yourself or anyone else before youhavecompletedthework.

Rotating partsTheHRUECO4containsrotatingmechanicalparts.Thesepartswillkeeponturningforafewsecondsafterdisconnectingtheunitfromthesupply.Forthisreasonwait at least10secondsafter isolating theproductbeforeopeningtheunit.Thefanwillnotbemovingafterthese10secondshaveelapsed.

Sharp edges of the ductsThevalvesandgrillesinyourhomeshouldalsobecleanedregularly.Thesecanberemovedfromthewallorceiling.Bewareofprotrudingductsections.Thesecanbeverysharp.

Replacing the valves and grillesThe valves should always be placed back in theiroriginal locations.Donot turn thevalveduring thecleaningprocess;ormakesuretomarkthesettingbeforecleaningthevalve.Ifthevalvesareswitchedorsetdifferently,theventilationvolumeswillnolong-erbecorrectandtheventilationsystemwillnotworkoptimally.Thebathroommaythenremainhumidfortoolong,yourtoiletmaybeverycooloryourkitchenmaysmellmouldy.

Maintenance of ductingItisourrecommendationthattheductingconnectedtotheExtractTerminals(locatedinkitchens,utilities,bathrooms and en-suites) needs to be inspectedevery3yearsandcleanedevery6years.Cleaningof the grille and ducting canbe carried outwith adampcloth.

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Table of contents1. Why use balanced ventilation? 6

2. The correct use of your ventilation system 7

3. Operation of the balanced ventilation system 8

4. Bypass and frost protection 9

5. Grilles 10

6. System control 11

7. Maintenance 13

8. Warranty conditions 15

9. Manufacturer’s statement 17

10. EU Declaration of Conformity 18

11. Troubleshooting 19

Subjecttochangeswithoutnotice.Norightscanbederivedfromthisusermanual.

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Ventilation is necessaryInthepastpeoplebuilthouseswhichwerenotair-tight,whichleakedair,forexample,attheconnectionpointofthewallandthefloororroof.Crackswerealwaysvisiblearoundwindowsanddoors.Alltheseopeningsensuredthatlargevolumesofairmovedinandoutofthebuildings.Whenthewindwasblowingthecompleteaircontentofthehomewasrefreshedthreetofourtimesanhour.Thisensuredverygoodventilationofthehome,butalotofenergywaslost.

Constructionmethodshavechanged.Floors,wallsandroofsare,whenpossible,constructedwithalay-erofinsulation.Theinsulationensuresthattherearenearlynocracksandtheair-tightnessisincreased.Itisamisconceptiontothinkthatthereisstillenoughventilation inahomewithoutsometypeofventila-tionsystem.Ventilationisabsolutelynecessaryinanair-tighthometopreventproblemsrelatedtohumid-ity,mouldandthehealthoftheresidents.

1 Why use balanced ventilation?Moisture content of the homeIncorrectuseoftheventilationsystembytheresidentin combination with today’s well-insulated homesgiveshumidityanopenfield.Themoisturecontentin thehomes increasesandcancausehealth,hu-midityandmouldproblems.Afamilyoffourpersonsproduces14to20litresofmoistureperdayjustbybreathing,sleeping,cooking,washing,dishwashing,bathing,wateringplants,etc.Manyproducts,suchas textile, carpets, parquet, newspapers and ciga-rettes, contain substances that harm the health oftheresidents.Allthemoisturesuchaswatervapourandaromatic substancesshouldbe removed fromthehomes.

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Ventilation requiresenergy.Thecorrectuseof theventilationsystemcanlimitenergylossasmuchaspossible.

YourhomehasaHeatraeSadiasuppliedHRUECO4 balanced ventilation system with heat recovery.Thissystemcancontributeextensivelytoahealthyinterior climate andanoptimumcomfort level.An-otheradvantageisthattheelectricitycostsarelowerthan thatof anyother ventilation system.Thebal-ancedventilationsystemcan,however,onlyfunctioncorrectlywhenusedandmaintainedinaresponsiblemanner.

2 The correct use of your ventilation systemSomehealthinformation:

• 5to20%ofpeoplehaveanairwaydisorder.Thenumberofhousedustmitehasincreasedahundredfoldinthepast25years.

• ThenumberofpeoplesufferingfromChronicNon-Specific Lung Disease has doubled inthelast15years.

Researchhasproventhatfightingmoistureinhomesgreatlycontributestothedecreaseofallergicreac-tionsofpeoplewithanairwaydisorder.Thecorrectuse andmaintenance of your balanced ventilationsystemmakesthispossible.

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ThecentralunitofthebalancedventilationsysteminyourhomeistheHRUECO4(heatrecoveryunit).Thisunithastwomotors.Onemotorforairextrac-tionandoneforairsupply.Airisextractedfromthekitchen,bathrooms,en-suites,utilityroomsandtoi-letsand,ifrequired,fromastorageroom.Inlargerpropertiesmore than one unit may have been in-stalled.

Air extraction and air supplyThecontaminatedairisfilteredandfedthroughtheheatexchangerbeforeitisdischargedoutside.Thefreshoutsideairisalsofilteredandfedthroughtheheatexchangerbefore it isallowed into thehome.Two air flows are led alongside each other in theheatexchanger(theairflowsare,therefore,notin-termingled).Thus,energyissavedastheheatofthedischargedair istransferredtothefreshair intake.The air flows through the ventilation ducts to thebedrooms,livingroomand,ifrequired,thehallway,i.e,everyroomwithanintakegrille.

3 Operation of the balanced ventilation system

Optimum efficiencyTheheatexchange ishighlyefficient. IndependenttestsattheBuildingResearchEstablishmentshowthatupto91%ofthedischargedwarmthisreusedwithin the home. The heat loss is, therefore, onlyabout9%.

Notwithstandingtheheatexchange,whichpreheats fresh outside air, the balancedventilation system should not be seen asa heating system. It is a ventilation sys-temthatcontributestothecomfortableandhealthyclimateofyourhome.

Overflow protectionThe installationdesignassumes there isa10mmspacebetweenthebottomofallinternaldoors,out-sidedoorandthefloorcovering.Ifthefloorcoveringisthicker,thedoorsshouldbeshortened.

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100% BypassTheHeatraeSadiaheatrecoveryunitHRUECO4isdeliveredasstandardwitha100%bypassvalve.This valve is completely integrated in theunit andensuresthat,ifrequired,thefreshoutsideairflowsdirectlytotheairsupplysysteminsteadofthroughthe heat exchanger. In this case there is no heattransferbetweenthewarmerdischargeairfromthehomeandthecolderintakeairthatisdrawnintothehome.Thefreshoutsideairisblowndirectlyintothehome.This is definitely an advantage in the sum-mer,whentheoutsideairisoftencoolerthantheairwithinthehome.

Frost protectionTheunitincludes,asstandard,frostprotection.Thisprotection ensures that the unit does not freezeduringthewinter.Thefrostprotectionconsistsofaunique frostvalve integratedat the topof theunit.Thefrostprotectionisfullyautomatic.

Frost protection operationIn theheat recoveryunit the fresh (colder)outsideair is partly heatedby theair discharged from thehome.Theexchangeofheattakesplacewhenbothair flows are led through the heat exchanger.Thedischargedairmaybecooledtoatemperatureverynear freezingbythecoldairenteringtheunit fromoutside.Inthiscase,theunitwillregularlyopenthefrostvalveandtakeinwarmairfromthehome.Thiswarmair ismixedwith thecoldair that is taken infromoutside.The temperature of the intakeair is,therefore,higherand thedischargeair in theheatexchangerwill also be safely above freezing. Theunitwillthusnotfreeze.

4 Bypass and frost protection Balancing the air flowInabalancedventilationsystem thevolumeofaircoming fromoutsideequals theamountofair dis-hargedfromthehome.Theoutsideairsuctionfan,therefore, turns faster when the frost protection istriggered.Thus,thevolumeofaircomingfromout-side remains the same as the amount of air dis-chargedfromthehome.Thetotalvolumeofair in-takeincreasesproportionallywiththevolumeofairtakeninfromthehomebythefrostvalve.Openingthefrostvalveisnotsufficientwhentheoutsidetem-peratureisevenlower.Theintakefanwillturnmoreslowlyand,aftersome time, thedischargeventila-torwillturnfaster.Theair,therefore,remainsabovefreezing.Thisresultsinatemporaryimbalanceoftheventilation(thevolumeofaircomingfromoutsideisnolongerequaltotheamountofairdischargedfromthehome).Whentheoutside temperature increas-es,theunitautomaticallyresetsthefanstotheinitialvalues.Theventilationisthusonceagainbalanced.

Electronic componentsThe electronic components are important parts oftheunit.Theelectroniccomponentscontroltheop-erationof theunitwhen you set themode switch.Themotorissettothespeedthatensuresthede-siredventilation.Theelectroniccomponentsconsistofabasicprintedcircuitboardandanoptionalradiofrequencymodule.Thiscanbeusedtoextendtheventilationunitwithradio frequencyoperation.Theuser should not touch the electronic components.Thesecomponentsmaybelive.

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GrillesThevolumeofairthathastobeextractedisspeci-fied in theBuildingRegulations.Thevolumeofairflowingintothehomehastobeinbalancewiththeextractedvolume.Thevolumeofairextractedfromand supplied to the home should, in other words,beequal.Theminimumairvolumeperroomisalsodetermined by the Building Regulations. The setvolumeofair isdeterminedbasedonachievinganoptimumhomeclimatewithoutwastingenergy.Theairintakeanddischargeperroomarenotequal.Theextractionandintakegrillesallhavetheirownfixedpositionsandsettings.

5 Grilles

ExtractValve

SupplyValve

The setting of the grilles should not bechanged.Changingthesettingsmaydis-rupttheoperationofthecompleteventi-lationsystem.Grillesandvalvesshouldnotbeswitchedwitheachother.

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TheHRUECO4 ‘Combiflow’systemhasbeende-signed to recoverasmuchheataspossibleand tofunctionwellusingas littleenergyaspossible.TheHeatraeSadiaHRUECO4canbeoperatedusingaradiofrequencyoperationswitch.

Radio frequency (RFT) operation switchTheRFT (radio frequency) operation switch (trans-mitter)canbeusedasa3-positionmodeswitchwithtimerfeaturefortheHRUECO4ventilationunit.Thisoperation switch can be used to set the ventilationunit to one of the three ventilationmodes (capaci-ties):Themodesare:

Mode1-Lowmode.Mode2-Mediummode.Mode3-Highmode.

The lowmode is a continuous background setting,themediummodecanbeusedforimprovedcomfortandthehighmodewhencooking,showeringorbath-ing.Theswitchalsohasatimer.Theventilationunitcanbeswitched tohighmode forapredeterminedtimebypressingthetimerbutton.Thetimerautomat-icallyswitchestheventilationunittolowmodeafterthetimehaselapsed.

RFT operation switch.

Thelengthoftimesetforthetimerisdeterminedbytheuser.Pressthetimerbuttononcetosettheventilationunittohighmodefor10minutes.Pressthetimerbuttontwicetosettheventilationunittohighmodefor20minutes.Pressthetimerbuttonthreetimestosettheventila-tionunittohighmodefor30minutes.

Iftheoperationswitchisusedbychoosingmode or whilethetimerisinoperation,thetimerisswitchedoffandtheventilationunitoperatesinthechosenmode.

6 System control Hard wired 3 position switch

TheHRUECO4canbeoperatedusingthe3posi-tionswitch.HRS-3.Stepone isusedatnight,step twoduringthe daywhen there are people at home and stepthreewhencooking,showeringorbathing.

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Recommended hours of operationAnewhomecontainsapproximately2000litresofmoistureinitsfloorsandwalls.Thismoisturehastoberemovedfromthehome.Itisrecommendthatanewhomebeventilatedmoreintensivelyduringthefirstfewmonths.Forexample,bysettingtheventila-tionsystem tomediummode insteadof lowmodeduringthedaytime.Therecommendedhoursofop-erationareprovidedinthelistbelow.

Toguaranteeahealthyenvironment in yourhomewe recommend the followingdailyhoursofopera-tionfortheventilationsystem:Atmost14hoursinlowmode.Atleast8hoursinmediummode.Atleast2hoursinhighmode.

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GrillesThegrilleshave tobecleaned regularly toensuretheconstantandreliableoperationoftheventilationsystemandforyourownhealth.Makesurethatthesettingofthesystem(airflow)isnotchangedwhenyou clean the grilles. The valve could be turnedbyaccidentand thiswouldmean that theopeningbecomes larger or smaller. Each grille should beplacedbackinthesameductopeninginthesameroomfromwhichitwasremoved.

FiltersTheheatrecoveryunitandtheextractorhavefilters.Thefilterspreventthecontaminationoftheventila-tion, guarantee years of correct operation anden-surethatcleanairisblownintoyourhome.Thisisveryimportantforyourhealth.Checkandcleanthefiltersregularlyandreplacethefilterswhenneces-sary.Thisensuresthehomeisventilatedsufficientlyatalltimes.Thefilterscanbecleanedmanuallybywashingthem.

Cleaning grilles without filtersGrilleswithout filters can be taken out of the ductopening(twisttotheleft).Beforeyoucleanthegrillein warm water (with detergent), remove the foamplasticring.Aftercleaning,thegrillecanbereplacedintheductopeningwithatwisttotheright.Alwaysmakesureyoureplaceagrilleinthesameroom.InadditionmakesureNOTtoalterthesettingofthegrille.

7 Maintenance

Airflow

Valve

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Removing the front of the unit.

Condensate dischargeThewarmcontaminatedairpassesalongthecolderfreshoutsideair in theheatexchangerof theheatrecovery unit. This can often result in condensatebeingformed,thereforetheHRUECO4hasanin-tegralcondensatedischargedrain.ThisdrainhasaPVCcouplingwitha40mmexternaldiameter.Theinstallerconnectsthiscouplingoftheheatrecoveryunit to the house sewerage grey water system orsurfacewaterdrainpipeusingaseparateremovablerubbercoupling.

Anair trapwithaminimum leveldifferenceof250mmisaddedinthisconnection.Abovetheairtrap,abranchpipeismountedata45-degreeangle.Thisbranchpipehasacoverwitharubberring.Thiscanbeopened to easily topup thewater trap.This isrequiredtomaintainorrestorethewatertrap.

Fixed coupling with fill openingIftheairtraprunsdry,theairfromthehousesew-eragewillbeabletoenter throughtheunitandbedischargedoutsideby thedischarge ventilator.Nosmellwillbecausedbutthedischargecapacitywilldecrease.Werecommendrefillingtheairtrapquar-terly.Thewaterwillevaporatemorequicklyinsum-mer.

Smells near the coupling with the condensa-tion discharge hoseWhentheairtraprunsdry,adirectconnectionwiththehousesewerageiscreated.Thiscreatessmells.Refill theairtrapusingthefillopeningtosolvetheproblem.Effectivedischargeofcookingandbakingvapoursinthekitchenisguaranteedbytheextrac-tor.Theextractorisconnectedtothebalancedven-tilationsystem.

Itispreferabletohavearegisteredinstallercarryoutthecleaning.

siphon siphon

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TheHeatraeSadiaHRUECO4warrantyisvalidfor2yearsafterinstallationdate.Theinstallationdateisindicatedonthetypeplate.

Thewarrantydoesnotapplyto:• Disassemblyandassemblycosts.• Faultswhichare,inouropinion,causedbyin-correcttreatment,negligenceoranaccident.

• Faults that have been caused by repairs orintended repairs by third partieswithout ourauthorisation.

• Faultscausedbyirregularand/orincompe-tentmaintenance.

• Modificationtotheappliance.• Incorrectinstallationoftheappliance.• Incorrectpowersupply,pleaserefertopage3forcorrectpowersupply.

Should the unit become damaged or malfunction,switchitoff, isolatingit fromthemainssupply,andcontactHeatraeSadiaimmediately.

8 Warranty conditions

Thewarranty isonlyvalid if thewarrantycardwasfilled inbyyoursupplieron thedateof installationandifit issentalongwithanyrequestforrepair(areceipt including thedateof installation isalsoac-ceptable).Thiswarrantycardshouldbefilledinontheinstallationdateandbekeptbytheuser.

TypeHouse/Apartment(deleteasappropriate)

Serialnumber

Voltage

Installationdate

Supplierseal

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4

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HeatraeSadiaHRUItemNo. Part PartNo.

1 Fan(1only) 956077222 PCBSet 956150883 Sensors(notshown) 956077234 FrostValve 95605905

Spares

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9 Manufacturer’s statementEC declaration of conformityAccordingtoLowVoltageDirective2006/95/ECandtheEMCDirective2004/108/EC.

Declaration of IncorporationAccordingtoAnnexIIBoftheMachineryDirective2006/42/EC,

HeatraeSadiaHeatingHurricaneWayNorwichNR66EA

hereby declare under our sole responsibility that the following products:

Heat Recovery Ventilation SystemType: HRU ECO 4

is in conformity with the following EC Council Directives:-LowVoltageDirective2006/95/EC-EMCDirective2004/108/EC

andAppliedHarmonisedStandards:-EN60730-1-EN61000-3-2-EN61000-6-1-EN61000-6-3-RoHs/Weee

andmustberegardedaspartlycompletedmachineryandisintendedtobeincorporatedinamachineortobeassembledwithothermachinesintoasinglemachineorsystemtowhichtheMachineryDirective2006/42/ECapplies.

WewanttoalertyouthattheproductisdesignedtobeincorporatedinaventilationsystemandthatthepartlycompletedmachinemustnotbeputintoserviceuntilthefinalmachineryintowhichitistobeincorporatedisinconformitywiththeprovisionsofMachineryDirective2006/42/ECforwhichthemostimportantinstructionscanbefoundinthemanual.

WeexplicitlystatethattheCEmarkingontheproductonlyreferstotheLowVoltageDirective2006/95/ECandtheEMCDirective2004/108/EC.

AfterthesubmissionofadeclarationaccordingtoAnnexIIAoftheMachineryDirectivefortheentireinstallation,theCEmarkingonthedevicealsoreferstotheMachineryDirective2006/42/EC.

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EC declaration of conformity

AccordingtoAnnexIIoftheMachineryDirective2006/42/ECWe:

Nameofinstaller:

Fulladdressandcountry:

Herebydeclareunderourownresponsibility,tohaveinstalledthefollowingproductwithtypedesignation:Heat Recovery Ventilation

Type: HRU ECO 4

towhichthisdeclarationrefers.Wedeclaretheentireinstallation(beingasinglemachine)inconformitywiththeMachineryDirective.

Place:

Date:

Name:

Position:

Signature:

CompanyStamp:

10 EU Declaration of Conformity

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11 TroubleshootingProblem TroubleshootingFansdonotturn. Nopowersupply. Mainsvoltagefailure.

Wallsocketpowersupplyfailure.Checkthedistributionboardinthefusecabinet/metercupboard.Checkwhetherthe230Voltplugisplacedcorrectlyintheunit.

Intakefandoesnotturn. Littleornoairiscomingthroughtheintakegrilles.

Frostprotectionisactivated.Cleanthefilters.

Dischargefandoesnotturn. Nosuctionthroughthedischargegrilles.

Cleanthefilters.

Lowvolumeofintakeair. Lowvolumeofairthroughintakegrilles.

Cleanthefilters.Exchangerispartiallyfrozenshut(frostprotectionfailure).

Lowvolumeofdischargeair. Lowvolumeofairtodischargegrilles.

Cleanthefilters.Exchangerispartiallyfrozenshut(frostprotectionfailure).

Condensationleakage. Dropsofwateronbottomoftheunit.

Condensationdischargeisclogged.Leakingcondensationdischarge.

Unpleasantsmell. Neartheunit.Nearintakegrilles.

Airtrapundertheunitisdry.Distancebetweenoutsideairsuctionandventilationoutletistoosmall.

Noise. Swishingsoundfromtheairflow. Theductsystemiscreatingtoomuchresistance.Valvesarenotopenedsufficiently.Valvesdonotfittheductproperly.Toomuchresistanceduetocontamina-tionoffiltersorexchangerfrozen).

Rattlingnoise. Fandoesnotruntrueorisfaulty.Gurglingnoise. Theairtrapisdry.

Condensationdischargeisnotsufficient-lydeepintheairtrap.

If the problem persists, report the details to the installer.

Climate for lifeHeatrae Sadia at all times strive to offer people an enjoyable living and working environment with its innovative solutions in climate systems. These are solutions for temperature, clean air and hot water in the domestic envi-ronment in which people and environment go harmoniously together. We want a more comfortable and healthier living environment but at the same time, we aim for lower energy consumption. With sustainable technologies and innovations, Heatrae Sadia proves that seemingly opposite objectives can be combined with very little ef-fort. Our aim is to develop climate systems that respect the world around us. Your wishes become our inspira-tion and Heatrae Sadia works constantly to achieve this: Climate for life.

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HEATRAE SADIA HEATINGHurricane Way, Norwich NR6 6EA

www.heatraesadia.com

SERVICE 01603 420100

EMAIL itho@heatraesadia.com

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