ISO 21364-21 2025.docx

InternationalStandardISO21364-21Firstedition2025-06Domesticgascookingappliances一Safety一Part21:Particularrequirementsforgashobs,gasgrillsandgasgriddlesAppareilsdecuissondomestiquesUtilisantIescombustiblesgazeuxSecurite一Partie21:ExigencesparticulierespourIestablesdecuissonagaz,ghlsagazetgrilsparcontactagazReferencenumberISO21364-21:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordviIntroductionvii1 Scope12 Normativereferences13 Termsanddefinitions23.1 Definitionsrelatingtocomponents24 Componentsingascookingappliances24.1 General24.2 Manualgasshut-offvalves24.3 Knobs34.3.1 Designofknobs34.3.2 Markingforknobs34.4 Multifunctionalcontrols34.5 Thermoelectricflamesupervisioncontrols34.6 Thermostats34.7 Pressureregulators34.8 Automaticshut-offvalves34.9 Injectorsandadjusters34.10 Ignitionsystems34.11 Thermalcut-outs34.12 Multi-ringburners34.13 Overheatingsafetydevices(OSD)44.13.1 Requirement44.13.2 Testprocedure55 Generalconditionsoftest56 Heatinput56.1 General56.2 Obtainingthenominalheatinput56.2.1 General56.2.2 Testofhobburner56.2.3 Testofmulti-ringhobburner66.2.4 Testofsurfacegrillandgriddlewithoutathermostat66.2.5 Testofsurfacegrillandgriddlewithathermostat66.3 Measurementsandcalculations66.4 Obtainingthereducedheatinput66.4.1 General66.4.2 Testofhobburner,surfacegrillandgriddleburner66.5 Totalheatinput67 Heating67.1 General67.2 Operatingconditions67.3 Heatingtests77.4 Abnormaloperation.77.4.1 General77.4.2 Hobburner77.4.3 Gasgriddles.78 Combustion78.1 Measurementofallburnerssimultaneously78.2 Blockedcombustionproductsoutlet78.3 Analysisofthecombustionproducts88.4 Singleburner88.4.1 Generalrequirement88.4.2 Hobburner,surfacegrillburnerandgriddleburner88.4.3 Testsofmulti-ringburner98.4.4 AdditionaltestofTypeIIandTypeVmulti-ringburners108.4.5 Samplingthecombustionproducts108.5 Sootingtest138.5.1 Requirement138.5.2 Test139 Ignition,cross-lightingandflamestability149.1 General149.2 Movementofoven/grilldoororcabinetdoor149.3 Testforapplianceshavinganautomaticburnercontrolsystem149.4 Hobburner,surfacegrillburnerandgriddleburner149.4.1 General149.4.2 Coldconditions149.4.3 Hotconditions159.5 Multi-ringhobburner169.5.1 Requirement169.5.2 AdditionaltestforTypeImulti-ringburners169.5.3 AdditionaltestforTypeIIandTypeVmulti-ringburners169.5.4 Resistancetodraught1710 Accumulationofunburntgasandleaktightness1811 Construction1811.1 General1811.2 Materials1911.2.1 General1911.2.2 Burnermaterialtest1911.2.3 Sealings1911.2.4 Resistancefornon-metallicfeetofpansupports1911.3 Gasinletconnections1911.4 Conversiontodifferentgases1911.5 Pullforcesofknobsformanualgasshut-offvalves1911.6 Appliancesthatenabletheusertoprogramthestartortheendofthecookingcycle1911.7 Compartmentforonegascylinder1911.8 Touchcontrols1911.8.1 General1911.8.2 Requirement2011.8.3 Test2011.9 Resistancetospillage2011.9.1 Requirement2011.9.2 Test2011.10 Specifichobpartsandhobaccessories2011.10.1 Pansupports2011.10.2 Removabledevicesforsmallpans2111.10.3 Specialsupportsforconvex-basedpans2111.10.4 Coveredburners2111.11 Shutdownlids2111.11.1 Requirement2111.11.2 Test2211.11.3 Glassshutdownlids2211.11.4 Shut-offdevice2212 Mechanicalstrength2312.1 Partsmadeofglassandglass-ceramic2312.1.1 General2312.1.2 Springhammertest2312.1.3 Punchtest2312.1.4 Thermalstressresistanceforglassandglass-ceramichobsurfaces2312.2 Pansupport2312.2.1 Requirement2312.2.2 Test2312.3 Pansupportincontactwiththeglassorglassceramicofthehob2313 Electricalsafety2414 Markingandinstructions24AnnexA(normative)Nationaldeviationsinvariouscountries.25AnnexB(informative)Additionaltestsforhobs,surfacegrillsandgriddlessuppliedwithnaturalgasandhydrogenadmixtures28AnnexC(informative)AdditionalcombustiontestforNO2measurementofgashobsburners33Bibliography35ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommi