CAUTION:Operationofcombustionequip-mentcanbehazardousresultinginbodilyinjuryorequipmentdamage.Eachburnershouldbesupervisedbyacombustionsafe-guardandonlyqualifiedpersonnelshouldinstall,makesystemadjustmentsandper-formanyrequiredservice.BULLETIN3501&3506FEATURESAPPLICATIONSNOTICE:Pyronicspracticesapolicyofcontinuousimprovementinthede-signofitsproducts.Itreservestherighttochangethespecifcationsatanytimewithoutpriornotice.BURNERSNOZZLEMIXSINGLETUNNELMULTIPLETUNNELMODEL:3501-SingleTunnelRevision:0•ForgingFurnaces•AirHeaters•AnnealingFurnaces•FumeDestructors•MeltingFurnaces•Ovens•Dryers•MalleabilizingFurnaces•Incinerators•Crematoriums•LadleHeating•CuringOvens•BurnOutFurnaces•SteamGenerators17700MILESAVE.CLEVELAND,OHIO44128www.pyronics.comPHONE:(216)662-8800FAX:(216)663-8954marketing@pyronics.com3506-MultipleTunnel•Highheatinputs-intensecombustion•Excellentflamestability•Wideturndownrange-greaterthan10:1onsingletunnelburners,higherturndownwithmultipletunnels•Flangedconstruction-elimatespipeunions•Highflamevelocitiesforbetterfurnacecirculation•Shortflamelengths-lessthan1ft.permillionBTU/hrwhenfiringintoanairstream•Designedforpressurizedfiring•Precisionpilotandflamedetectionmountings•Uniquesteppedtunneldesign•Willburnathighfirewithcoldblock-nowarmuprequired•Lowerairpressuresrequired•Noflashbacks•Refractoryburnerblocksforoperationupto3300°F•Ruggedheavydutyconstruction8001NMDESCRIPTIONCAPACITYTABLEBULLETIN3501&3506PAGENO.2NozzleMixBurnersareshortflamehighcapacityunitsdesignedforextremelywideturndownranges.Gasandairaremixedonlyatthepointofdischarge,flashbackisprevented.Exclusivesteppedtunneldesigncreatesveryhighturbulenceandinternalrecirculationintheflame.Thecombustiontunnelshapeproducespressuresintheflamethatarelowerthanthefurnacepressureaidingflameretention.Ignitionofmainflameissmoothandstableinallsizes.Hotrefractorysurfacesontheblocksarenotrequiredforignition.Allsizesmaybelightedandraisedimmediatelytohighfirewithexcellentflamestablility.Eachburnerisequippedwithanintegralmountingflangeforpressurizedfiringupto10psigfurnacepressure(consultfactory).NMburnersdevelopcapacityratingsatlowpressuredrops.Economicallowpressureairblowersareadequate.Flangedconnectionsarestandard.Pipeunionsarenormallynotrequired.Flamelengthsareveryshort(seecapactiytable).Largecombustionchambersarenotrequired.Whenoperatinginairheatersflameshieldblockextensionsareusedtopreventflamequenching.Multipletunnelunitsproducehighercapacitieswithshortflamelengthsbyspreadingtheflameoveralargearea.Crossignitionportsbetweentunnelsareprovidedtostabilizetheflamesatnormalfiringratesandfuel-airratios.Individualpilotsarerecommendedforeachtunnelwithmainflamesupervision.EachNMburnercanbeorderedwithamicrometertypegasflowadjuster.Pressurereferencedcontrolsystemsareusedtocontrolheatinputs.1/2oz.1oz.2oz.3oz.4oz.²5oz.6oz.8oz.10oz.101NM3/4"3/8"355070871001121221401586"201NM1-1/4"3/4"711001411732002242452833168"301NM1-1/2"1"1051502102603003363684204758"601NM2"1-1/4"21030042052060067073584095010"1001NM3"1-1/4"3505007008701000112012201400158012"1501NM3"1-1/2"570750100013001500170018502100240024"2501NM4"2-1/2"8801250177021602500280030603540395030"4001NM6"3"1400200028003460400044804900560063204'6001NM8"3"2100300042005200600067007350840095006'8001NM8"3"2825400056506930800089509800--8'2002NM4"2@1-1/4"70010001400173...
