848--SIGMA-CN

9.955.44102(09)Subjecttochangewithoutnotice�FListheinletfilter.�EV1isadirectactingautomaticshut-offvalve.�FLPisthepilotfilter.�RPisaservopressureregulator,adjustablebyascrew.�G/Aisthepneumaticdeviceforthecontrolofthegaspressureaccordingtotheairpressuresignal.�EV2istheseconddirectactingautomaticshut-offvalve.�RQisagas/airratioadjuster(optional).VALVEDESCRIPTION1On-OffsolenoidvalvesEV1andEV2terminals2Inletpressuretestpoint3OutletpressuretestpointPINT4AdditionaloutletpressuretestpointPOUT(versionwithgas/airadjuster)5Airsignalconnection6Zeroadjustment(offset)7Gas/airratioadjuster(optional)8Gasinlet9Pilotoutlet(optional)10Maingasoutlet11Sideoutlet(optional)12Mountingholes126107534RPEV2FLG/AEV1FLPRQMAINBURNERPILOTBURNERGASINLETFig.1119Versionwithsideoutlet8129955441_indesign_A00.indd29955441_indesign_A00.indd221/11/200810.03.4321/11/200810.03.433CONSTRUCTIONCHARACTERISTICS�Aluminiumalloybody�Twoshut-offvalves�Inlineinletandoutlet�Sideoutlet(optional)�Inletfilter�Pilotoutlet(optional)�Outletandpilotfilters(optionals)�Inletpressuretestpoint�OutletpressuretestpointPINT�AdditionaloutletpressuretestpointPOUT(versionwithgas/airadjuster)�Airsignalconnection�TwomountingholesMECHANICALCONNECTIONS�Inletfilter195µmmesh�Mountingpositionany�GasfamiliesIIandIII�Ambienttemperature0...60°C�Maximuminletpressure60mbar�MaximumpressuredropPINT-Pa-12...+12mbarwithclosedshutoffvalves(pre-purgeorotherconditions)�Minimumgasflow0.5m3/hfor2ndfamilygas(groupH/L/E)0.3m3/hfor3rdfamilygas(LPG)�BendingandtorsionresistanceGroup2USESPECIFICATIONS�GasinletandoutletG3/4BISO228or:M4(4)(flanges)minimumfullthread6mmor:Rp1/2ISO7(105mmversion)�Sideoutlet(optional)M5(3)�Pilot(optional)M10x1fortubeø4,ø6mmorø1/4”�Pressuretestpointø9mm�Airsignalconnection(*)ø7mm�MountingholesM4x6.5mm(*)WARNING:CONNECTIONTOTHEPNEUMATICCONTROLSIGNAL(AIR-VENT)SIT848SIGMAmustbeusedsothattherecanbenogasdemandifthereisnoairflow.ToguaranteethecorrectoperationitisrecomendedtochecktheventdiameterandifitisnecessarytoinstallthemultifuntionalgascontrolaccordingEN12067andEN12078inordertoventthebreatherholetoasafe(ventilated)placetoconnectwithametallictube.Allthedetailedguidelinesforinstallationaregivenintheuseandinstallationinstructionscode9.956.848.GENERALDATA9955441_indesign_A00.indd39955441_indesign_A00.indd321/11/200810.03.5121/11/200810.03.51INT-PaPM4(4)()4�AutomaticshutoffvalvesMalecontact3003Molexcompatible,suitableforfemaleMolexseries3001�ProtectiondegreeIP40withSITconnectorsIP44withSITconnectorsandgasketTheconnectondiagramisgiveninFig.2.Theautomaticshut-offvalveEV1canbesuppliedconnectingpins3and4.Theautomaticshut-offvalveEV2canbesuppliedconnectingpins1and3.ELECTRICALCONNECTIONELECTRICALDATAPinPoutVentR.Q.ADJP.R.ADJ.1234EV1EV2AUTOMATICSHUTOFFVALVES:EV1EV2EV1EV2Nominalsupplyvoltage(AC)Currentatnominalvoltage(mA)Poweratnominalvoltage(W)230V50Hz40124.32.024V50Hz3901004.62.0220V60Hz48205.52.924V60Hz4801206.01.824VRAC2701156.52.8FUNCTIONSAUTOMATICSHUT-OFF�Automaticshut-offvalvesclosingtime≤1s�Automaticshut-offvalveEV1ClassAorB�Automaticshut-offvalveEV2ClassCorJPRESSUREREGULATIONServopressureregulatorclassB(withreferencetoEN126)GAS/AIRREGULATIONPressuredroprangeacrossgasinjector(PINT-Pc):0.5...12mbarZeroadjustmentrange(offset)(PINT-Pa):-0.3...+0.3mbarFig.2:connectiondiagram.9955441_indesign_A00.indd49955441_indesign_A00.indd421/11/200810.03.5221/11/200810.03.525CAPACITYREGULATEDFLOWRATEQSolenoidvalvesclassB+JorB+C910246810120148765432PINT[mbar]Q[m3/h]SecondFamilyGroupHInletpressurerangeNominalMax.Min.RelativeDensity2025170.555VersionwithoutratioadjusterVersionwithratioadjuster(ratioadjusterfullopen)SolenoidvalvesclassB+JorB+C910246810120148765432PINT[mbar]Q[m3/h]SecondFamilyGroupLInletpressurerangeNominalMax.Min.RelativeDensity2530200.6129955441_indesign_A00.indd59955441_indesign_A00.indd521/11/200810.03.5221/11/200810.03.52VersionwithoutratioadjusterVersionwithratioadjuster(ratioadjusterfullopen)6FUNCTIONALDESCRIPTIONPINT=Pa+OsPa-PcPressuredropacrossairrestrictor.PINT-PaPressuredifferencebetweenoutletPINTgaspressureandairsignal.Duringoperatingconditions(gasvalvesopen),itiscalledoffset”.NOMENCLATUREPaAirsignalpressure.PcMixingchamberpressure.PINInletgaspressure.PINTOutletpressuretestpoint.POUTAdditionaloutletpressuretestpoint(versionwithgas/airratioadjuster).Zeroadjustment(offset)Airsignal(Pa)PcGasinjectorAir/gasmixtureAirrestrictorAirPOutPINTRatioAdjusterEV1EV2GasPINInletfilterPilotfilterFig.3:airsignalPaPINT=Pa+OsPINT=PaPINT=Pa-OsgaspressurePINT9955441_indesign_A00.indd69955441_indesign_A00.indd621/11/200810.03.5321/11/200810.03.537SETTINGSANDADJUSTMENTSVersionswithzeroadjuster(offset)Alladjustmentsmustbecarriedoutinthefollowingorder.Checktheinletandoutletpressureusingthepressuretestpointsprovided(AandBrespectively).RemovetheplugC.ReduceairsignalPatotheminimumanda