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20CommissioningofVADsshouldbecarriedoutinaccordancewiththerecommendationsofClause5ofBS5839-1CommissioningProceduresx0ThepositioningandratingofVADdevicesshouldcomplywithClause4.6.9ofEN54-23andthesystemdesignerx19sinstallationdrawingsx0AllVADsusedforindicationofafirealarmortheevacuationphaseofamultistagealarmshouldbethesamecolourthroughoutthesitex0VADsshouldnotbeconfusedwithanyothervisualalarmsignalsusedwithinthebuildingx0WheremultipleVADsarevisiblefromanysinglepointtheyshouldmeetthesynchronisationrequirementsofsub-clauses4.3.3gand4.5.5ofEN54-23Documentationx0Thedocumentationshouldincludex1casfittedx1ddrawingsshowingthelocationandcoverageratingsofallVADsinaccordancewiththeformatsspecifiedin4.3.6.2ofEN54-23ImplicationsofEN54-23foraCommissioningEngineerKeyTipsPositioningWhereanareatobecoveredislargerthanthatstatedbythemanufacturerensurethatasufficientnumberofVADshavebeeninstalledandsitedappropriately.WherepossibleensurethattheVADissitedfordirectlineofsightbyalloccupantsinthearea.IfrelyingonindirectilluminationallthesurfacesoftheprotectedspacemustbeinsidethespecifiedcoveragevolumeoftheVAD.MountingHeightandOrientationThemountingheightoftheVADispre-determinedbythemanufacturerbasedonitsoptimaloutputtogiveilluminanceof0.4lux.CooperFulleonx19sSolistaLXWallRoLPLXWallandSymphoniLXWallareallsuitableforwallapplicationatamaximummountingheightof2.4m.Itisalsoessentialthatthevisualelementisorientatedasindicatedbytheinstallationinstructions.FlashRateSwitchFulleonx19sLXrangehasaswitchfeatureallowingtheusertoreducetheflashratefrom1Hzto0.5Hztoreducecurrentconsumption.EnsurethatallotherVADsaresettothesameflashratesetting.EN54-23CertifiedDevicesDoesthedevicehaveEN54-23certificationfromanotifiedbodyavailableRelevanttoUKonly.PleaserefertoyourregionalorlocalrequirementsifoutsidetheUK.