STD*BSIBSEM303-b-ENGL2000H3b24bb7084bZUO331BRITISHSTANDARDHeatingboilers-Part6:Heatingboilerswithforceddraughtburners-Specificrequirementsforthedomestichotwateroperationofcombinationboilerswithatomizingoilburnersofnominalheatinputnotexceeding70kWTheEuropeanStandardEN303-6:2000hasthestatusofaBritishstandardICs91.140.10;91.140.@NOCOPYINGWIT'HO~BSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGWïLAWBSEN303-62000CopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,-`-`,,`,,`,`,,`---BSEN303-6:2000Amd.No.NationalforewordDateCommentsThisBritishStandardistheofficialEnglishianguageversionofEN303-6:2000.TheUKparticipationinitspreparationwasentrusîedtoTechnicalCommitteeRHE/lO,Heatingboilers,whichhastheresponsibilityto:-aidenquirerstounderstandthetea-presenttotheresponsibleEuropeancommitteeanyenquiriesonthe-monitorrelatedinternationalandEuropeandevelopmentsandpromulgateinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;themintheUK.Alistoforganizationsrepresentedonthiscommitkecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStan-whichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSIStandardsCatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Find”facilityoftheBSIStandardsElectronicCatalogue.ABritishStandarddoesnotpurporttoincludeailthenece-provisionsofacontract.UsersofBritishStandardsareresponsiblefortheircorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to17andbackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.ThisBritishStandard,havingbeenpreparedunderthedirectionoftheEngineeringSectorCommittee,waspublishedundertheauthorityoftheStandardsCommitteeandcomesintoeffecton15May2000OBSI062000ISBNO580358038AmendmentsissuedsincepublicationCopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,-`-`,,`,,`,`,,`---STD=BSIBSEN303-b-ENGL2000111Lb24bb7OBLib202TO4EUROPEANSTANDARDNORMEEUROPEENNEEUROPASCHENORMEN303-6January2000__~~ICs91.140.10EnglishversionHeatingboilers-Part6:Heatingboilerswithforceddraughtburners-Specificrequirementsforthedomestichotwateroperationofcombinationboilerswithatomizingoilburnersofnominalheatinputnotexceeding70kWChaudièresdechauffage-Partie6:Chaudièresavecbrûleursàairsoufflé-Exigencesspécifiquesàlafonctioneauchaudesanitairedeschaudièresàdeuxservicesavecbruleursfioulàpulvérisationdontledébitcaloriquenominalestinférieureouégaleà70kWHeizkessel-Teil6:HeizkesselmitGebläsebrenner-SpezielleAnforderungenandietrinkwasserseitigeFunktionvonKombi-KesselnmitOlzerstäubungsbrennemmiteinerNenwärmeleistungkleineralsodergleich70kWThisEuropeanStandardwasapprovedbyCENon21November1999.CENmembersareboundtocomplywiththeCENICENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropanStandardthestatusofanationalstandardwithoutanyaiieration.Up-to-datelistsandbibliographicalreferencesconcerningsichnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeoficialversions(English,French,German).AversioninanyotherlanguagemadebytraislationundertheresponsibilityofaCENmemberintoitsownlanguageansnotifiedtotheCentralSecretariathasthesamestatusasheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONEUROPÄISCHESKOMITEEFÜRNORMUNGCOMITÉEUROPÉENDENORMALISATIONCentralSecretariat:ruedeStassart,36B-1050Brussels(B2000CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN303-6:2000ECopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlicensewithCENNotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,```,-`-`,,`,,`,`,,`---STDOBSIBSEN303-b-ENGL2000=lb24bb9084b203940IPage2EN303-6:2000ContentsPageForeword3iScope.........................................................................................................................................................42Normativereferences...................................................................................................................................43Definitions...................................................................................................................................................44Constructionalrequirements.....................................................................................................................55Operationalrequirements.........................................................................................................................