Heatrae Sadia HRU ECO 4 User manual

HRU ECO 4
User manual

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Safety
WARNING
• Donotusethisapplianceforfunctionsother
thanthosedescribedinthebooklet.
• After removing the appliance from its pack-
aging,ensurethatitiscompleteandundam-
aged. If in doubt contact Heatrae Sadia. Do
notleave thepackaging withinreach ofchil-
drenortheinrm.
• Certainfundamentalrulesmustbeobserved
when using any electrical appliance, includ-
ing:
a)Nevertouchapplianceswithwetordamp
hands
b)Nevertouchapplianceswhilebarefoot.
c)Donotallowchildrentousetheappliance
withoutsupervision.
d)Superviseinrmpersonswhenusingthe
appliance.
• Storetheapplianceoutofthereachofchildren
andinrmpersonsifyoudecidetodisconnect
itfromthepowersupplyandnolongeruseit.
• Donotoperatetheapplianceinthepresence
of:
Inammablesubstancesorvapours(alcohols,
insecticides,petrol,etc).
CAUTION
Thefollowinggeneralinstructionsareimportant:
• Follow the safety instructions to prevent fan
damageandpersonalinjuries.
• Maintenanceinstructionsmustbefollowedto
prevent damage and/or excessive wear and
tear.
• Thespecicationsinthismanualmaynotbe
modied.
• Theunitmaynotbemodied.
• The motor module is only suitable for a 230
V50Hza.csystemttedwitha3ampfuse.
• Do not expose the appliance to the weather
(rain,sun,etc).
• Donotplaceobjectsontopoftheappliance.
• Regularlyinspecttheapplianceforvisiblede-
fects.Ifanyfaultsarefound,contactHeatrae
Sadiaimmediately.
• Theappliancemustonlybeinstalledbyapro-
fessionallyqualiedperson.
• Ensurethattheelectricalsystemtowhichthe
applianceisconnectedcomplieswithapplica-
blestandards.
• Use a multi-polar switch with a minimum
contactgapof3mmtoinstalltheappliance.
Switchofftheapplianceatthemainswitch.
a)Iftheappliancedoesnotfunctioncorrectly.
b) Before cleaning the outside of the appli-
ance.
c) If the appliance is not to be used for any
lengthoftime.
• Becarefultoavoiddamagingtheelectriccir-
cuit.
• Donotusetheappliancetocontrolactivation
ofwaterheaters,roomheatersetc,norshould
it discharge into the ues of any such appli-
ances.
• Ensure that the appliance discharges into a
singleduct (dedicated tothisproduct) which
isroutedtotheoutside.
• Theairtobeextractedfromthedwellingmust
be clean (i.e. free of grease, soot, chemical
andcorrosiveagents,explosiveorammable
mixtures).
• Keep the appliance intake and outlet grilles
freetoensureoptimumairowatalltimes.

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Safety
Electronic components
TheHRUECO4containspartswhichmaybelive.
Consult a professionally qualied installer in the
event of an alleged fault. All repairs and mainte-
nanceworkshouldbecarriedoutbyaprofessionally
qualiedinstaller.
Maintenance
Theventilationunitshouldbeinspectedregularlyfor
contamination.Electricallydischargetheunitbefore
carryingoutanyworkonit.Firstisolatetheunitfrom
themainssupplyandmakesurethattheunitisnot
re-connectedorthesupplyplugisnotreinsertedin
the socket by yourself or anyone else before you
havecompletedthework.
Rotating parts
TheHRUECO4containsrotatingmechanicalparts.
Thesepartswillkeeponturningforafewseconds
afterdisconnectingtheunitfromthesupply.Forthis
reason wait at least 10 seconds after isolating the
productbeforeopeningtheunit.Thefanwillnotbe
movingafterthese10secondshaveelapsed.
Sharp edges of the ducts
Thevalvesandgrillesinyourhomeshouldalsobe
cleanedregularly.These canbe removedfromthe
wallor ceiling.Bewareofprotruding ductsections.
Thesecanbeverysharp.
Replacing the valves and grilles
The valves should always be placed back in their
original locations. Do not turn the valve during the
cleaningprocess;ormakesuretomarkthesetting
beforecleaningthevalve.Ifthevalvesareswitched
orsetdifferently,theventilationvolumeswillnolong-
erbecorrectandtheventilationsystemwillnotwork
optimally.Thebathroommaythenremainhumidfor
toolong,yourtoiletmaybeverycooloryourkitchen
maysmellmouldy.
Maintenance of ducting
Itisourrecommendationthattheductingconnected
totheExtractTerminals(locatedinkitchens,utilities,
bathrooms and en-suites) needs to be inspected
every3yearsandcleanedevery6years.Cleaning
of the grille and ducting can be carried out with a
dampcloth.

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Table of contents
1. 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
Subjecttochangeswithoutnotice.
Norightscanbederivedfromthisusermanual.

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Ventilation is necessary
Inthepastpeoplebuilthouseswhichwerenotair-
tight,whichleakedair,forexample,attheconnection
pointofthewallandtheoororroof.Crackswere
alwaysvisiblearoundwindowsanddoors.Allthese
openingsensuredthatlargevolumesofairmovedin
andoutofthebuildings.Whenthewindwasblowing
thecompleteaircontentofthehomewasrefreshed
threetofourtimesanhour.Thisensuredverygood
ventilationofthehome,butalotofenergywaslost.
Constructionmethods have changed.Floors,walls
androofsare,whenpossible,constructedwithalay-
erofinsulation.Theinsulationensuresthatthereare
nearlynocracksandtheair-tightnessisincreased.
Itisamisconceptiontothinkthatthereisstillenough
ventilationin ahome withoutsome typeof ventila-
tionsystem.Ventilationisabsolutelynecessaryinan
air-tighthometopreventproblemsrelatedtohumid-
ity,mouldandthehealthoftheresidents.
1 Why use balanced ventilation?
Moisture content of the home
Incorrectuseoftheventilationsystembytheresident
in combination with today’s well-insulated homes
giveshumidityan openeld.Themoisturecontent
inthe homes increasesandcan cause health,hu-
midityandmouldproblems.Afamilyoffourpersons
produces14to20litresofmoistureperdayjustby
breathing,sleeping,cooking,washing,dishwashing,
bathing, watering plants, etc. Many products, such
as textile, carpets, parquet, newspapers and ciga-
rettes, contain substances that harm the health of
theresidents.Allthemoisturesuchaswatervapour
and aromatic substances should be removed from
thehomes.

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Ventilation requires energy. The correct use of the
ventilationsystemcanlimitenergylossasmuchas
possible.
YourhomehasaHeatraeSadiasuppliedHRUECO
4 balanced ventilation system with heat recovery.
Thissystemcancontributeextensivelytoahealthy
interior climate and an optimum comfort level.An-
otheradvantageisthattheelectricitycostsarelower
than that of any other ventilation system. The bal-
ancedventilationsystemcan,however,onlyfunction
correctlywhenusedandmaintainedinaresponsible
manner.
2 The correct use of your ventilation system
Somehealthinformation:
• 5to20%ofpeoplehaveanairwaydisorder.
Thenumberofhousedustmitehasincreased
ahundredfoldinthepast25years.
• ThenumberofpeoplesufferingfromChronic
Non-Specic Lung Disease has doubled in
thelast15years.
Researchhasproventhatghtingmoistureinhomes
greatlycontributestothedecreaseofallergicreac-
tionsofpeoplewithanairwaydisorder.Thecorrect
use and maintenance of your balanced ventilation
systemmakesthispossible.

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Thecentralunitofthebalancedventilationsystemin
yourhomeistheHRUECO4(heatrecoveryunit).
Thisunithastwomotors.Onemotorforairextrac-
tionandoneforairsupply.Airisextractedfromthe
kitchen,bathrooms,en-suites,utilityroomsandtoi-
letsand,ifrequired,fromastorageroom.Inlarger
properties more than one unit may have been in-
stalled.
Air extraction and air supply
Thecontaminatedairislteredandfedthroughthe
heatexchangerbeforeitisdischargedoutside.The
freshoutsideairisalsolteredandfedthroughthe
heatexchanger before itisallowed into the home.
Two air ows are led alongside each other in the
heatexchanger(theairowsare,therefore,notin-
termingled).Thus,energyissavedastheheatofthe
dischargedairistransferredtothefreshairintake.
The air ows through the ventilation ducts to the
bedrooms,livingroomand,ifrequired,thehallway,
i.e,everyroomwithanintakegrille.
3 Operation of the balanced ventilation system
Optimum efciency
Theheat exchange ishighlyefcient. Independent
testsattheBuildingResearchEstablishmentshow
thatupto91%ofthedischargedwarmthisreused
within the home. The heat loss is, therefore, only
about9%.
Notwithstandingtheheatexchange,which
preheats fresh outside air, the balanced
ventilation system should not be seen as
a heating system. It is a ventilation sys-
temthatcontributestothecomfortableand
healthyclimateofyourhome.
Overow protection
The installation design assumes there is a 10 mm
spacebetweenthebottomofallinternaldoors,out-
sidedoorandtheoorcovering.Iftheoorcovering
isthicker,thedoorsshouldbeshortened.

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100% Bypass
TheHeatraeSadiaheatrecoveryunitHRUECO4
isdeliveredasstandardwitha100%bypassvalve.
This valve is completely integrated in the unit and
ensuresthat,ifrequired,thefreshoutsideairows
directlytotheairsupplysysteminsteadofthrough
the heat exchanger. In this case there is no heat
transferbetweenthewarmerdischargeairfromthe
homeandthecolderintakeairthatisdrawnintothe
home.Thefreshoutsideairisblowndirectlyintothe
home. This is denitely an advantage in the sum-
mer,whentheoutsideairisoftencoolerthantheair
withinthehome.
Frost protection
Theunitincludes,asstandard,frostprotection.This
protection ensures that the unit does not freeze
duringthewinter.Thefrostprotectionconsistsofa
uniquefrost valve integratedatthe top oftheunit.
Thefrostprotectionisfullyautomatic.
Frost protection operation
Inthe heat recoveryunitthe fresh (colder)outside
air is partly heated by the air discharged from the
home.Theexchangeofheattakesplacewhenboth
air ows are led through the heat exchanger. The
dischargedairmaybecooledtoatemperaturevery
nearfreezingby thecoldair enteringtheunitfrom
outside.Inthiscase,theunitwillregularlyopenthe
frostvalveandtakeinwarmairfromthehome.This
warmair is mixed withthe cold air thatistaken in
from outside. The temperature of the intake air is,
therefore, higher and the discharge air in the heat
exchanger will also be safely above freezing. The
unitwillthusnotfreeze.
4 Bypass and frost protection
Balancing the air ow
In a balanced ventilation system the volume of air
coming from outside equals the amount of air dis-
hargedfromthehome.Theoutsideairsuctionfan,
therefore, turns faster when the frost protection is
triggered.Thus,thevolumeofaircomingfromout-
side remains the same as the amount of air dis-
chargedfromthehome.Thetotalvolumeofairin-
takeincreasesproportionallywiththevolumeofair
takeninfromthehomebythefrostvalve.Opening
thefrostvalveisnotsufcientwhentheoutsidetem-
peratureisevenlower.Theintakefanwillturnmore
slowlyand, after sometime,the discharge ventila-
torwillturnfaster.Theair,therefore,remainsabove
freezing.Thisresultsinatemporaryimbalanceofthe
ventilation(thevolumeofaircomingfromoutsideis
nolongerequaltotheamountofairdischargedfrom
thehome).When theoutside temperatureincreas-
es,theunitautomaticallyresetsthefanstotheinitial
values.Theventilationisthusonceagainbalanced.
Electronic components
The electronic components are important parts of
theunit.Theelectroniccomponentscontroltheop-
eration of the unit when you set the mode switch.
Themotorissettothespeedthatensuresthede-
siredventilation.Theelectroniccomponentsconsist
ofabasicprintedcircuitboardandanoptionalradio
frequencymodule.Thiscanbeusedto extendthe
ventilationunit withradio frequencyoperation.The
user should not touch the electronic components.
Thesecomponentsmaybelive.

10
Grilles
Thevolumeofairthathastobeextractedisspeci-
ed in the Building Regulations. The volume of air
owingintothehomehastobeinbalancewiththe
extractedvolume.Thevolumeofairextractedfrom
and supplied to the home should, in other words,
beequal.Theminimumairvolumeperroomisalso
determined by the Building Regulations. The set
volumeofairisdeterminedbasedonachievingan
optimumhomeclimatewithoutwastingenergy.The
airintakeanddischargeperroomarenotequal.The
extractionandintakegrillesallhavetheirownxed
positionsandsettings.
5 Grilles
ExtractValve
SupplyValve
The setting of the grilles should not be
changed.Changingthesettingsmaydis-
rupttheoperationofthecompleteventi-
lation system. Grilles and valves should
notbeswitchedwitheachother.

11
TheHRU ECO 4 ‘Combiow’system hasbeende-
signedto recover asmuch heat as possibleand to
functionwell usingas littleenergy as possible.The
HeatraeSadiaHRUECO4canbeoperatedusinga
radiofrequencyoperationswitch.
Radio frequency (RFT) operation switch
The RFT (radio frequency) operation switch (trans-
mitter)canbeusedasa3-positionmodeswitchwith
timerfeaturefortheHRUECO4ventilationunit.This
operation switch can be used to set the ventilation
unit to one of the three ventilation modes (capaci-
ties):Themodesare:
Mode1-Lowmode.
Mode2-Mediummode.
Mode3-Highmode.
The low mode is a continuous background setting,
themediummodecanbeusedforimprovedcomfort
andthehighmodewhencooking,showeringorbath-
ing.Theswitchalsohasatimer.Theventilationunit
can be switched to high mode for a predetermined
timebypressingthetimerbutton.Thetimerautomat-
icallyswitchestheventilationunittolowmodeafter
thetimehaselapsed.
 RFT operation switch.
Thelengthoftimesetforthetimerisdeterminedby
theuser.
Pressthetimerbuttononcetosettheventilationunit
tohighmodefor10minutes.
Pressthetimerbuttontwicetosettheventilationunit
tohighmodefor20minutes.
Pressthetimerbuttonthreetimestosettheventila-
tionunittohighmodefor30minutes.
Iftheoperationswitchisusedbychoosingmode
 or whilethetimerisinoperation,thetimer
isswitchedoffandtheventilationunitoperatesin
thechosenmode.
6 System control
Hard wired 3 position switch
TheHRUECO4canbeoperatedusingthe3posi-
tionswitch.

HRS-3.Stepone is used at night, step two during
the day when there are people at home and step
threewhencooking,showeringorbathing.

12
Recommended hours of operation
Anewhomecontainsapproximately2000litresof
moistureinitsoorsandwalls.Thismoisturehasto
beremovedfromthehome.Itisrecommendthata
newhomebeventilatedmoreintensivelyduringthe
rstfewmonths.Forexample,bysettingtheventila-
tion system to medium mode instead of low mode
duringthedaytime.Therecommendedhoursofop-
erationareprovidedinthelistbelow.
To guarantee a healthy environment in your home
we recommend the following daily hours of opera-
tionfortheventilationsystem:
Atmost14hoursinlowmode.
Atleast8hoursinmediummode.
Atleast2hoursinhighmode.

13
Grilles
The grilles have to be cleaned regularly to ensure
theconstantandreliableoperationoftheventilation
systemandforyourownhealth.Makesurethatthe
settingofthesystem(airow)isnotchangedwhen
you clean the grilles. The valve could be turned
by accident and this would mean that the opening
becomes larger or smaller. Each grille should be
placedbackinthesameductopeninginthesame
roomfromwhichitwasremoved.
Filters
Theheatrecoveryunitandtheextractorhavelters.
Thelterspreventthecontaminationoftheventila-
tion, guarantee years of correct operation and en-
surethatcleanairisblownintoyourhome.Thisis
veryimportantforyourhealth.Checkandcleanthe
ltersregularlyandreplace thelterswhenneces-
sary.Thisensuresthehomeisventilatedsufciently
atalltimes.Thelterscanbecleanedmanuallyby
washingthem.
Cleaning grilles without lters
Grilles without lters can be taken out of the duct
opening(twisttotheleft).Beforeyoucleanthegrille
in warm water (with detergent), remove the foam
plasticring.Aftercleaning,thegrillecanbereplaced
intheductopeningwithatwisttotheright.Always
makesureyoureplaceagrilleinthesameroom.
InadditionmakesureNOTtoalterthesettingofthe
grille.
7 Maintenance
Airow
Valve

14
Removing the front of the unit.
Condensate discharge
Thewarmcontaminatedairpassesalongthecolder
freshoutside airin theheat exchangerof theheat
recovery unit. This can often result in condensate
beingformed,thereforetheHRUECO4hasanin-
tegralcondensatedischargedrain.Thisdrainhasa
PVCcouplingwitha40mmexternaldiameter.The
installerconnectsthiscouplingoftheheatrecovery
unit to the house sewerage grey water system or
surfacewaterdrainpipeusingaseparateremovable
rubbercoupling.
An air trap with a minimum level difference of 250
mmisaddedinthisconnection.Abovetheairtrap,
abranchpipeismountedata45-degreeangle.This
branchpipehasacoverwitharubberring.Thiscan
be opened to easily top up the water trap. This is
requiredtomaintainorrestorethewatertrap.
Fixed coupling with ll opening
Iftheairtraprunsdry,theairfromthehousesew-
eragewillbeabletoenterthroughtheunit andbe
discharged outside by the discharge ventilator. No
smellwillbecausedbutthedischargecapacitywill
decrease.Werecommendrellingtheairtrapquar-
terly.Thewaterwillevaporatemorequicklyinsum-
mer.
Smells near the coupling with the condensa-
tion discharge hose
Whentheairtraprunsdry,adirectconnectionwith
thehousesewerageiscreated.Thiscreatessmells.
Relltheairtrapusingthellopeningtosolvethe
problem.Effectivedischargeofcookingandbaking
vapoursinthekitchenisguaranteedbytheextrac-
tor.Theextractorisconnectedtothebalancedven-
tilationsystem.
Itispreferabletohavearegisteredinstaller
carryoutthecleaning.
siphon siphon

15
TheHeatraeSadiaHRUECO4warrantyisvalidfor
2yearsafterinstallationdate.Theinstallationdateis
indicatedonthetypeplate.
Thewarrantydoesnotapplyto:
• Disassemblyandassemblycosts.
• Faultswhichare,inouropinion,causedbyin-
correcttreatment,negligenceoranaccident.
• Faults that have been caused by repairs or
intended repairs by third parties without our
authorisation.
• Faultscausedbyirregularand/orincompe-
tentmaintenance.
• Modicationtotheappliance.
• Incorrectinstallationoftheappliance.
• Incorrectpowersupply,pleaserefertopage3
forcorrectpowersupply.
Should the unit become damaged or malfunction,
switchitoff,isolatingitfromthemainssupply,and
contactHeatraeSadiaimmediately.
8 Warranty conditions
Thewarrantyisonlyvalidif thewarrantycardwas
lled in by your supplier on the date of installation
andifitissentalongwithanyrequestforrepair(a
receipt including the date of installation is also ac-
ceptable).Thiswarrantycardshouldbelledinon
theinstallationdateandbekeptbytheuser.
TypeHouse/Apartment(deleteasappropriate)
Serialnumber
Voltage
Installationdate
Supplierseal

16
4
12
HeatraeSadiaHRU
ItemNo. Part PartNo.
1 Fan(1only) 95607722
2PCBSet 95615088
3Sensors(notshown) 95607723
4FrostValve 95605905
Spares

17
9 Manufacturer’s statement
EC declaration of conformity
AccordingtoLowVoltageDirective2006/95/ECandtheEMCDirective2004/108/EC.
Declaration of Incorporation
AccordingtoAnnexIIBoftheMachineryDirective2006/42/EC,
HeatraeSadiaHeating
HurricaneWay
NorwichNR66EA
hereby declare under our sole responsibility that the following products:
Heat Recovery Ventilation System
Type: HRU ECO 4
is in conformity with the following EC Council Directives:
-LowVoltageDirective2006/95/EC
-EMCDirective2004/108/EC
andAppliedHarmonisedStandards:
-EN60730-1
-EN61000-3-2
-EN61000-6-1
-EN61000-6-3
-RoHs/Weee
andmustberegardedaspartlycompletedmachineryandisintendedtobeincorporatedinamachineortobe
assembledwithothermachinesintoasinglemachineorsystemtowhichtheMachineryDirective2006/42/EC
applies.
Wewanttoalertyouthattheproductisdesignedtobeincorporatedinaventilationsystemandthatthepartly
completedmachinemustnotbeputintoserviceuntilthenalmachineryintowhichitistobeincorporatedisin
conformitywiththeprovisionsofMachineryDirective2006/42/ECforwhichthemostimportantinstructionscan
befoundinthemanual.
WeexplicitlystatethattheCEmarkingontheproductonlyreferstotheLowVoltageDirective2006/95/ECand
theEMCDirective2004/108/EC.
AfterthesubmissionofadeclarationaccordingtoAnnexIIAoftheMachineryDirectivefortheentireinstallation,
theCEmarkingonthedevicealsoreferstotheMachineryDirective2006/42/EC.

18
EC declaration of conformity
AccordingtoAnnexIIoftheMachineryDirective2006/42/EC
We:
Nameofinstaller:
Fulladdressandcountry:
Herebydeclareunderourownresponsibility,tohaveinstalledthefollowingproductwithtypedesignation:
Heat Recovery Ventilation
Type: HRU ECO 4
towhichthisdeclarationrefers.Wedeclaretheentireinstallation(beingasinglemachine)inconformitywiththe
MachineryDirective.
Place:
Date:
Name:
Position:
Signature:
CompanyStamp:
10 EU Declaration of Conformity

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11 Troubleshooting
Problem Troubleshooting
Fansdonotturn. Nopowersupply. Mainsvoltagefailure.
Wallsocketpowersupplyfailure.
Checkthedistributionboardinthefuse
cabinet/metercupboard.
Checkwhetherthe230Voltplugis
placedcorrectlyintheunit.
Intakefandoesnotturn. Littleornoairiscomingthrough
theintakegrilles.
Frostprotectionisactivated.
Cleanthelters.
Dischargefandoesnotturn. Nosuctionthroughthedischarge
grilles.
Cleanthelters.
Lowvolumeofintakeair. Lowvolumeofairthroughintake
grilles.
Cleanthelters.
Exchangerispartiallyfrozenshut
(frostprotectionfailure).
Lowvolumeofdischargeair. Lowvolumeofairtodischarge
grilles.
Cleanthelters.
Exchangerispartiallyfrozenshut
(frostprotectionfailure).
Condensationleakage. Dropsofwateronbottomofthe
unit.
Condensationdischargeisclogged.
Leakingcondensationdischarge.
Unpleasantsmell. Neartheunit.
Nearintakegrilles.
Airtrapundertheunitisdry.
Distancebetweenoutsideairsuction
andventilationoutletistoosmall.
Noise. Swishingsoundfromtheairow. Theductsystemiscreatingtoomuch
resistance.
Valvesarenotopenedsufciently.
Valvesdonotttheductproperly.
Toomuchresistanceduetocontamina-
tionofltersorexchangerfrozen).
Rattlingnoise. Fandoesnotruntrueorisfaulty.
Gurglingnoise. Theairtrapisdry.
Condensationdischargeisnotsufcient-
lydeepintheairtrap.
If the problem persists, report the details to the installer.
Climate for life
Heatrae 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 HEATING
Hurricane Way, Norwich NR6 6EA
www.heatraesadia.com
SERVICE
01603 420100
EMAIL
[email protected]
36006179_issue_02