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Safety5Q.WhoisaffectedbyEN54-23A.ThestandardappliestomanufacturerssellingaVADintotheEUFireMarket.EN54-23becomesmandatoryfrom1stMarch2013acrossEurope.FortheUKPortugalEireandSwedenCPDoptoutsend30thJune2013whenCPRreplacesCPD.Q.HowdoesanEN54-23compliantVADdifferfromcurrentproductsA.TocomplywithEN54-23thecoveragevolumeoftheVADbasedontherequiredminimumilluminationof0.4luxmustbestated.Thiscoveragevolumemustbepresentedontheproductorintheaccompanyingproductdocumentation.AproductmanufacturedusingexistingtechnologymayconformbutbecauseitslightoutputmaybepoorlydistributedcomparedtothecoveragerequirementsofEN54-23theroomsizewillbeimpracticalforsystemdesignanditmayconsumeexcessivecurrent.Q.DoEN54-23productsconsumemorepowerA.Yes.Productscurrentlyavailableinthemarketwillachievetherequiredlightlevelforsmallroomsbutwillneedtoincreasetheirpowerconsumptiontoachievereasonableroomcoverage.Thisincreaseincurrentconsumptionwilllimitthenumberofdevicesthatcanbesupportedbythealarmcircuitsothatthesystemcouldbecomeimpracticalanduneconomictoinstall.Theinversesquarelawstatesthatx1cthecoveragedistancefromalightsourcewillrequirefourtimesthepowertoachievethesamelevelofluminosityx1d.Q.WhatareWallCeilingandOpenClassapplicationsA.DevicesconformingtoEN54-23fitintooneofthreeclassesx13wallceilingoropenclass.Wallandceilinghaveaninstallationheightandareacoveragedefinedbythestandard.Opencategorydevicesallowthemanufacturertospecifythecoveragevolumetoanydesiredcoverageshape.Theminimumrequiredilluminationof0.4luxisusedtodetermineareacoverageinallcases.Q.IsthemountingheightfixedunderEN54-23A.Wallbasedproductsmustbemountedaminimumheightof2.4mfromthefloor.Ceilingproductsmustdefinethemaximumheightoftheceilingatwhichtheyaredesignedtooperatex133m6mor9m.Q.HowdoesEN54-23impactonsystemdesignA.Ifyouaredesigningafirealarmsystemyouwillneedtobeawareofthecoveragevolumeofyourchosendevice.CooperFulleonoffersanumberofsupporttoolstohelpwithproductspecification.Forfurtherinformationseepage718and22oralternativelydownloadtheCooperFulleonpocketguidefromourwebsiteatwww.cooperfulleon.com.ThepocketguideisbasedonLossPreventionCodeofPracticeCOP0001andprovidesguidanceontheplanningdesigninstallationcommissioningandmaintenanceofVADs.RelevanttoUKonly.PleaserefertoyourregionalorlocalrequirementsifoutsidetheUK.FrequentlyAskedQuestions