1、BRITISH STANDARD BS EN 14095:2003 Water conditioning equipment inside buildings Electrolytic treatment systems with aluminium anodes Requirements for performance, safety and testing The European Standard EN 14095:2003 has the status of a British Standard ICS 13.060.20; 91.140.60 BS EN 14095:2003 Thi
2、s British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 January 2004 BSI 12 January 2004 ISBN 0 580 43219 X National foreword This British Standard is the official English language version of EN 14095:2003. The UK participation in its preparation was
3、 entrusted by Technical Committee B/504, Water supply, to Subcommittee B/504/13, Domestic water treatment, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement int
4、ernational or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not pu
5、rport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European commit
6、tee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16
7、, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14095 December2003 ICS13.060.20;91.140.60 Englishversio
8、n WaterconditioningequipmentinsidebuildingsElectrolytic treatmentsystemswithaluminiumanodesRequirementsfor performance,safetyandtesting Appareilsdeconditionnementdeaulintrieurdes btimentsInstallationslectrolytiquesavecanodesen aluminiumExigencesdeperformances,descuritet dessais AnlagenzurBehandlungv
9、onTrinkwasserinnerhalbvon GebudenElektrolytischeDosierungsanlagenmit AluminiumanodenAnforderungenanAusfhrungund Sicherheit,Prfung ThisEuropeanStandardwasapprovedbyCENon14November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Sta
10、ndardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytr
11、a nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherl
12、ands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMe
13、mbers. Ref.No.EN14095:2003EEN14095:2003(E) 2 Contents Page Foreword. 3 Introduction 4 1 Scope . 5 2 Normativereferences . 5 3 Termsanddefinitions. 5 4 Materialsdesignandrequirements . . 6 4.1 Dosageofhydratedaluminiumoxide . 6 4.2 Directcurrentgenerator . 6 4.3 Watermeter . 7 4.4 Anodes. 7 4.5 Condi
14、tioningtank . 7 5 Performancerequirements 8 5.1 DCgenerator . 8 5.2 Terminals . 8 6 Performancetesting . 8 6.1 Testbench . 8 6.2 Switchboardtest . 9 6.3 DCgeneratortestprocedures . 9 6.4 Terminals . 10 7 Technicaldocumentsandlabelling . . 11 7.1 RatingplateontheDCgenerator 11 7.2 Ownersbooklet . 11
15、7.3 Anodes. 11 7.4 Label. 11 AnnexA (informative) 12 A.1 Operatingconditions 12 A.2 Exampleofuse 12 A.3 Aluminiumcomposition . 13 A.4 Wateranalysis . 14 A.5 Electrolyticdissolutionofaluminium. 14 A.6 Maintenance 14 A.7 Operatingandcommissioning . . 15 Bibliography . 16EN14095:2003(E) 3 Foreword This
16、document(EN14095:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC164“Watersupply”, thesecretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJune2004,andconflictingnationalstandardsshallbewithdrawn
17、at thelatestbyJune2004. AnnexAisinformative. Thisdocumentincludesabibliography. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Hungary,I
18、celand,Ireland,Italy,Luxembourg,Malta,Netherlands, Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN14095:2003(E) 4 Introduction Inrespecttopotentialadverseeffectsofthequalityofwaterintendedforhumanconsumption,causedbythe productcoveredbythisstandard: a) thisstandardprovidesnoi
19、nformationastowhethertheproductmaybeusedwithoutrestrictioninanyof thememberstatesoftheEUorEFTA; b) itshouldbenotedthat,whileawaitingtheadoptionofverifiableEuropeancriteria,existingregulations concerningtheuseand/orthecharacteristicsofthisproductremaininforce.EN14095:2003(E) 5 1Scope ThisEuropeanStan
20、dardappliestoelectrolyticdosingsystemsforconditioningwaterintendedforhuman consumptioninsidebuildingsandbasedondissolutionofaluminiumanodes(withimposedDCcurrent).It specifiesconstructional(butnotdimensional)andoperationalrequirements.Itdescribesrelevantmethodsfor testingperformanceandsafety.Itonlyco
21、ncernsunitswhicharepermanentlyconnectedtothemainssupply. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequent
22、amendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublicationreferredtoapplies(includingamendments). EN5733,Aluminiumandaluminiumalloys Chemicalcompositionandformofwroughtproducts Part3:C
23、hemicalcomposition . EN602, AluminiumandaluminiumalloysWroughtproductsChemicalcomposition of semiproductsused forthefabricationofarticlesforuseincontactwithfood . EN1717,Protectionagainstpollutionofpotablewaterinwaterinstallationsandgeneralrequirementsof devicestopreventpollutionbybackflow . EN12499
24、, Internalcathodicprotectionofmetallicstructures prEN12897, WatersupplySpecificationforindirectlyheatedunvented(closed)storagewaterheaters . EN55011,Industrial,scientificandmedical(ISM)radiofrequencyequipmentRadiodisturbance characteristicsLimitsandmethodsofmeasurement(CISPR11:1997,modified) EN60335
25、1, HouseholdandsimilarelectricalappliancesSafetyPart1:Generalrequirements(IEC60335 1:2001,modified ISO78581, MeasurementofwaterflowinclosedconduitsCombinationmetersforcoldpotablewater Part1:Specifications ISO78582, MeasurementofwaterflowinclosedconduitsCombinationmetersforcoldpotablewater Part2:Inst
26、allationrequirements 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply: 3.1 conditioningofwaterintendedforhumanconsumption modificationofthecharacteristicsofdrinkingwaterforaspecialpurposewithinthelimitsstipulatedinthe Directive98/83/EEC,adoptedinnationa
27、llegislationoftheMemberStatesEN14095:2003(E) 6 3.2 anode electrodeconnectedtothepositive(+)outputfromthedirectcurrentgenerator 3.3 anodelifetime timeintervalbetweenreplacementsofthealuminiumanodes 3.4 cathode electrodeconnectedtothenegative()outputfromthedirectcurrentgenerator 3.5 directcurrentgener
28、ator devicewhichsupplieslowvoltagedirectcurrenttotheanodicdissolutionofthealuminiumanodes 3.6 hydratedaluminiumoxide dosingagentfirstreactionproduct,whichisformedbythedissolutionofthealuminiumanodesasafunction oftheDirectCurrentwithwater 3.7 conditioningtank vesselinwhichtheanodicdissolutionofthealu
29、miniumanodesoccurs.Itislocatedin themainhotwaterline afterreheating,infrontofthedistributionnetworkwhichistobeprotected 3.8 conditioningtime residencetimeoftheconditioningtank.Itisthevolumeoftheconditioningtankdividedbythecumulativeflow rateofwater 4 Materialsdesignandrequirements 4.1 Dosageofhydrat
30、edaluminiumoxide Thereactionproductsofthealuminiumanodesshallnotgiverisetoconcentrationsbeyondthelimitin accordancewiththeNationalandEuropeanregulationsconcerningthequalityofwaterintendedforhuman consumption(e.g.EC.Directive98/83/EEC)(see4.4). Themaximumaluminiumconcentration(expressedasAl)shallnote
31、xceed0,2mg/lincoldwaterand0,5mg/I inheatedwater(see4.2). 4.2 Directcurrentgenerator Theelectricalapparatus,connectionsandmountingsonsiteshallbeinaccordancewithEN603351.The DirectCurrentGeneratorwithitsconnectionstoanodes,cathodesandotherappliancesshallbein accordancewithEN55011. TheDCoutputshallbeco
32、ntrolledasafunctionofthewaterconsumption. Thecurrentshallbelimitedtoensurethattheamountofdissolvedaluminiumconcentrationdoesnotexceed thepermittedvalueofthenationalregulations. ThereshallbevisualindicationoftheoperatingstatusoftheDCgenerator. TheDCgeneratorshallbedesignedtoallowthesummation of thene
33、cessarycurrentdemandforeachtreated watercircuit.EN14095:2003(E) 7 4.3Water meter Animpulsewatermeter(orimpulseflowmeterorinductiveflowratemeter)inaccordancewithISO7858 (parts1and2)shallbeinstalledinlineinthecoldwaterinletinfrontoftheconditioningtanktoregulatethe directcurrent,inaccordancewithvariati
34、oninwaterflow. Alternativelyawatermetertomeasurethetotalconsumptionofthewaterconditionedandaflowmetertogive informationtotheDCgeneratorshallbeinstalled. 4.4Anodes Thealuminiumquality,whichisusedtomanufacturetheanodesshallbeapprovedforcontactwithfoodstuff accordingtoEN5733andEN602. 4.5Conditioning ta
35、nk 4.5.1Volume Thevolumeoftheconditioningtankshallbesufficienttoallowaconditioningtimeofatleast15min. 4.5.2Access ThetankshallbefittedwithanaccessformaintenanceapplyingTable3(classA)andTable4(classB) of prEN12897. 4.5.3Cathodic protection Ifacomplementarycathodicprotectionisnecessarythentherequireme
36、ntsofEN12499shallbeobserved. 4.5.4 Aerationandairrelease Thetankshallbefittedwithanautomaticcorrosionresistantaerationandairreleasevalvetoconformto EN12499. 4.5.5Sludge drain Aballvalveshallbefittedatthelowestpointoftheconditioningtank.Itsdiametershallbeequaltothe diameterofthewaterinletbutnomoretha
37、nDN50evenifthewaterinletdiameterislarger.Foravertical tank,thesludgedrainoutletshallbeweldedtothecentreofthetankbottom.Forahorizontaltank,thesludge drainfittingshallbeweldedtothebottomoftheoppositesideo f thewaterinlet. 4.5.6 Heatingcoil Ifthereisaheatingcoilintheconditioningtank,thetubesmustbewidel
38、yspacedtoavoidaccumulationof sludgeandscale.Thetubesshallbepositionedonasquarecentreconfiguration. 4.5.7 Backflowprotection ThetankshallbeprotectedagainstbackflowofsludgeintothesupplysysteminaccordancewithEN1717.EN14095:2003(E) 8 5Performance requirements 5.1DC generator EachtypeofDCgeneratorshallbe
39、testedfortheaccuracyofthedeliveredcurrentinaccordancewiththe waterflow,andfortheconformityto4.2above.Thisshallbedoneonatestingbench(seeFigure 1) simulatingtheflowmeterandthevariability of theimpedanceaccordingtochangesofoutputcircuitload. TheconsistencyoftheoutputcurrentfromtheDCgeneratorshallbetest
40、edforvaryingconditions,by variationoftheconductivityandwaterconsumption.Thereshallalsobealongtermoutputconsistencytest. Ineachtestthecurrentshallberecordedfora10 min period,aftera5 minstabilizationperiodatthe minimum,50%ofthemaximumandthemaximumlevelstipulatedbythesystemmanufacturer. Foreach10minper
41、iod,thecurrentoutputshallnotexceed+5%nor5%oftheregulatedvalue. Ifunderhighflowrateconditions,itispossible,duetointegralfunctionofthecurrentcontroller,forthe aluminiumconcentrationtoincrease,itshallbeverifiedthatthemaximumdosagecannotbeexceeded. 5.2Terminals 5.2.1 Pressuretest Whensubjectedtoahydraul
42、icpressureof2timesthenominalpressureforaperiodof10minto12minno visibleleakageshalloccur. 5.2.2 Insulationtest Thereshallbeameasurabledifferenceinpotentialbetweentheflangeandtheanodeconnection(see6.4.2) 6 Performancetesting 6.1 Testbench 6.1.1General Thetestingbenchincludesfollowingitems: 6.1.2Rack T
43、herackisdesignedtosupportoneormoregeneratorstobetestedwiththeirinputandoutputconnections. 6.1.3Load Tosimulatethechangeoftheconductivityinthewaterbeingconditioned,theloadisavariableresistance representedonFigure1.Eachpositiveoutputofageneratorshallbeconnectedononevariableresistance. Howeverthenegativeconnectioniscommon.Itshallbedesignedtosupportthemaximumoutputwithout overheating.Thevariation of theresistancecanbeoperatedmanually.EN14095:2003(E) 9 Key 1 Signalinput 5 Variableresistance 2 Electricalpower 6 DCgeneratorintest 3 DCoutput 7 Programm
