Danfoss ist der führende Hersteller für Komponenten für

brennbare Flüssigkeiten, die in Haushalt, Gewerbe und

Industrie verwendet werden. Diese Position wurde erreicht

indem die Erwartungen der Kunden übertroffen wurde;

schnelles eingehen auf die gestellten Anforderungen;

Lieferung von hoher Qualität und wettbewerbsfähige

Preise – alles unter Berücksichtigung der Umwelt.

Unser Produktbereich für Brenner und Kessel umfasst:

Ölpumpen, Öldüsen, Ölvorwärmer, Zündeinheiten,

Ölfeuerungsautomaten und Thermostate.

Das Herz der Heizung

brenner.danfoss.com Produced by Danfoss A/S © Industry Service – G1 Advertising 06.09520F0666 DKBD.PB.060.B1.03

Practical tipsOil nozzles

DANFOSSBURNER COmPONENTS

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies toproducts already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

mAKiNG mODERN liviNG POSSiBlE

Dear Danfosspartner

Dear Danfoss partner

As one of the most important oil nozzle manu-facturers Danfoss wants with this booklet to be of assistance to you in your daily work.

With this booklet you can choose and fit Danfoss oil nozzles for all purposes and for any demand.

In addition to that you get valuable tips and refe-rences to how to fit oil nozzles in your working area.

How important the function of the oil nozzle is to the oil burner appears clearly from this booklet.

Danfoss assists you in handling these mechanically complicated products which are of vital importance for the function and the output of the oil nozzle.

For further help in your work with oil burner com-ponents Danfoss refers to our Service handbook about burner components and to our homepage burner.danfoss.com

�

PageTheoilnozzleandthecompleteoilheatingplant.............................................................. 3

Whatyoushouldknowatleastaboutoilnozzles.................................................................. 4

Howdoesanoilnozzlework?................................ 5

Spraypatternsandsprayanglesoftheoilnozzle. 6

Markingoftheoilnozzle......................................... 7

Howisthecorrectoilnozzlechosen?.................... 8

Boilercapacityandnozzlesizing............................ 9

Calculationofoilnozzlecapacity........................... 10

Isitpossibletocompareoilnozzlesofdifferentmakes?........................................................................ 11

Conversiontableforoilnozzles............................. 12

Forhowlongcananoilnozzlebeused?............... 13

Whateffectsthefunctionoftheoilnozzle?.......... 14

Tipsaboutreplacementoftheoilnozzle............... 15

Whateffecthavedirtandsedimentsinfueloil?.. 16

Whatcausesanoilnozzletodrip?......................... 17

Whatcausesanafterdripofoilwhentheburnerstops?.......................................................................... 18

Practical tips about Danfoss oil nozzles

Table of contents:

�

Whatcausestheoiltocokeontheoilnozzleandtheignitionelectrodes?.................................................. 19

Whatisthecauseofnooilfromtheoilnozzle?... 20

Whattodowiththeoldoilnozzles?...................... 21

Whatmattersarethedetails............................. 22,23

Practical tips about Danfoss oil nozzles

Table of contents:

�

The oil nozzle and the complete oil

heating plant

Acompleteoilheatingplantbeginsattheoiltankfillingconnectionandendsatflueorthechimneypipe.

Almostattheheartoftheplant,hiddenfromalleyes,isasmallinterestinggadget–theoilnoz-zle.Theoilnozzleplaysavitalroleincombustion,becauseitwouldbeabsolutelyimpossibletogetCLEAN,STABLEandECONOMICplantoperationifitisnothandledcorrectly.

Theoilnozzleshouldbetreatedlikeadearfriend,i.e.protectivelyandconsiderately.Becarefulnevertotouchthetipofthenozzleandthenozzleorificewithdirtyfingers,asthismightcausethenozzleorificetoclog.Topickupthenozzle,alwaysgripthespannerflatsonly.

Storing:Alwaysleavethenozzleinitsprotectivecoveringuntilitistobeinstalledintheburner.

Transport:AlwaysusetheDanfossnozzlecasefortransport;thenozzlewillbewell-protectedinthisway.

�

What you should know at least

about oil nozzles

Theoilnozzleisofvitalimportancetothecombustion.Itisonlypossibletogetatclean,stableandeconomi-calplantoperationwhentheoilnozzlefunctionstoperfection.

The best result is obtained when the oil nozzle is replaced once a yearThereasonisthatinthecourseoftheheatingseason,dirtparticlesgatherinthenozzlefilterandintheoilnozzlesandruinorhinderaperfectatomizing.

Boththeenvironmentandtheoilaccountwillprofitfromaperfectoilatomizing.Furtherservicevisitsduetocloggedoilnozzlesshouldnotbenecessary.

Danfoss oil nozzles are extremely precise and meet the requirements of the actual EN-norm of a capacity tolerance of ±4%

NozzlesproducedbyDanfossaretested100%intestoilforkeepingthetolerancespermitted.Beyondthis,theatomizingpatternsaretestedvisuallyforregularityandatomizingfaults,ifany.

HasanewDanfossoilnozzlebeeninstalled?

�

The function of the oil nozzle

Fig.1showsthewaythefueloilrunsthroughtheoilnozzle:Thefueloilisputunderpressurebytheoilpumpandrunsintotheoilnozzleandisfilteredinthenozzlefilter.Intheswirlchamberthefueloil“rotates”andleavestheoilnozzleforbeingburstinmanyfinesmalldrops.Theorificeandtheconeslotsdeterminethespraycharacteristics.

Fig. 1: The way the fuel oil travels through the oil nozzle

Burnersusedtoday,designedexactlytotheheatre-quirementofthehouse,haveresultedinareductionoftheburnercapacities.Sothecrosssectionintheoilnozzlehadtobereduced,too.Theorificediameteronanoilnozzleisthusonlyafewtenthsofamillimetre(fig.2),whichmeansthatnon-professionaltreatmentmaycauseimmediateoperationalproblems.

Fig. 2: Nozzle orifice compared with a hair from a human being

�

Thepropertiesoftheoilnozzleappearonthenozzlemarkings.Oilnozzlesareavailablewithdifferentspraypatternsandsprayangles.Thesemustfittheburnerinquestionandofcoursealsothecombus-tionchamberoftheboiler.

ThedesignationsofthespraypatternsonDanfossoilnozzlesareS(Solid);H(Hollow)andB(Universal=semisolid).Othermarkshavesimilardesignations.

Fig. 3: Spray patterns of the oil nozzleFrom left to right: Spray patterns B, S and H.

Thesizesofthesprayanglesarenormally30°,45°,60°and80°.

Fig. 4: Spray angles 30°, 45°, 60° and 80°

Spray patterns and spray angles of oil

nozzles

�

FromthemarkingontheDanfossoilnozzlesitiseasytoreadthecapacity,spraypatternandsprayangle.Sometypesalsoprovideinformationonnormspecificpropertiesaccordingtothenorminquestion,e.g.EN293and299.

Somecountrieshavespecificdemandsondefinitionpoint(e.g.England,JapanortheUSA).

Marking on an oil nozzle, type OD with a capacity of 2.37 kg/h2)

• ENstatesthattheoilnozzleisinaccordancewiththenormsEN293andEN299.

• 80°IIstatesthecharacteristicoftheoilnozzle,i.e.angleindexandatomizingindexaccordingtoENNorm2).

• Thefiguresinthesquarebrackets[]areaninternalseriescode.

• TheUSgal/hvaluestatestheoilnozzlecapacityinanotherdefinitionpoint1),whichformerlywasspreadgloballyintheindustry–andisstillusedinespeciallythecustomerarea.Tobeabletomeetthedemandsinthismarket,thesedesignationswillbemaintainedonallDanfossoilnozzles.

1)DefinitionpointUSgal/h=7bar,3.4mm²/s,820kg/m³

2)Definitionpointkg/haccordingtoEN293=10bar,3.4mm²/s,840kg/m³

Marking of the oil nozzle

�

How is the correct oil nozzle chosen?

WhenaDanfossnozzleneedsreplacingandallthathastobedoneisswapoldfornew,itisasimplemattertomakesurethatthenumbersandlettersoneachnozzlecorrespond.Ifthedesignationontheoldnozzlehasbecomeillegible,somethingthathappensmostoftenbecauseofclumsyhandling,theinstruc-tionbookwillcontaindetailsastotherighttypeandsizetouse.Shouldthenozzledesignationbeillegibleandtheinstructionbooklost,thesizeofnozzlemustbechosentomatchtheboilercapacity.Thisinformationwillbeonatypeplatefittedontheboiler,failingthisitisrecommendedthatyoucon-tacttheboilermanufacturer.

�

Boiler capacity and nozzle size

Thecapacityofaboilerisnormallystatedeitheraskcal/horaskW

a) kcal/h = kilo calorie per hourAseachkilogramoffueloilatcombustionyields10,000kcal=10Mcal,itiseasytocalculatewhatnozzlesizetochoose.

Example:Foraboilerstamped25,000kcal/h,chooseanoilnozzleof2.5kg/hatapumppressureof10bar.(25,000:10,000=2.5kg).Thisunitcapacitywasalsointroducedinthenozzlestandard.

b) kW = kilowattThedesignationkWwillbeusedmorefrequentlyinfuture,astheunitformspartoftheSI-systemofmeasurements.

1litreoffueloilyieldsatcombustionapprox.10kW.ItisthereforeeasytochoosetherightsizeofaDanfossoilnozzleforaboilerifthecapacityisstatedinkW.AsDanfossoilnozzlesaremarkedwithkg/h,acon-versionmustbemade.

1litreoffueloil=0.84kg,e.g.20kWboilercapacity=2litresor1.68kg/hatapumppressureof10bar.

Theexamplesoverleafshowhowsimpleitistocal-culatethenozzlesizesforadifferentpressure.

�0

Calculating examples for

choice of oil nozzles

Example 1:Herewewanttherequiredpressuresettingwithanoilnozzleof2.11kg/htoobtainaflowrateof2.5kg/h.

V2=2.5kgwantedflowrateV1=2.11kg/hnozzlecapacityat10barP1 =pumppressureat10barP2 =thewantedpumppressure

V2= V1× √P2:P1;P2=V2²:V1²×P1;P2 = 2,5²:2,11²×10=14barPressuresettingwithanoilnozzleof2.11kg/hmustbe14bartoobtainaflowrateof2.5kg/h.

Example 2:Herewewanttheflowrateofanoilnozzleof2.11kg/hatapumppressureof12bar.

V2=wantedflowrateV1=2.11kg/hflowrateat10barP2 =pumppressureat12barP1 =pumppressureat10bar

V2= V1× √P2:P1=2,11×√P2:P1=2,31kg/hAtapumppressureof12baritispossibletoobtainaflowrateof2.31kg/hwithanoilnozzleofacapacityof2.11kg/h.Afurtherhelpforquickdeterminationofasuitableoilnozzleisthenozzlecalculatororthenozzlecapacitytable.

Danfosshasthusplacedanozzlecalculatorontheinternet,withwhichtherightoilnozzlecanbefoundquickly(seeburner.danfoss.com).

��

ThesituationmayarisewhereanozzleofanothermakeistobereplacedbyaDanfossoilnozzleandthequestionariseshowtocomparethedifferentmakes.Theinstructionbookoftheoilheatingplantoftencontainsadviceandgivesinformationonthedifferentmakesandtypestouse.Capacitiesgivenforthedifferentnozzletypescanbedirectlycom-pared.Sprayanglestoocanbecomparedasthesizeoftheangleisstampedontheoilnozzle.

Is it possibleto compare

oil nozzles ofdifferent makes?

��

Conversion to Danfoss oil nozzles �. First choice of oil nozzle

�. Alternative proposal

Delavan A Danfoss H Danfoss HRDelavan B Danfoss S Danfoss SRDelavan W Danfoss B –Fluidics SF Danfoss SR Danfoss SFluidics HF Danfoss HR Danfoss HFluidics S Danfoss SR Danfoss SFluidics H Danfoss HR Danfoss HMonarch PL Danfoss HR Danfoss H/BMonarch NS Danfoss HR Danfoss HMonarch PLP Danfoss B –Monarch AR Danfoss SR Danfoss SMonarch R Danfoss SR Danfoss SHago B Danfoss SR Danfoss SHago H Danfoss HR Danfoss HHago SS Danfoss HR Danfoss H/BHago P Danfoss SR Danfoss SHago ES Danfoss SR Danfoss SSteinen PH Danfoss HR Danfoss H/BSteinen H, HAT Danfoss HR Danfoss HSteinen SS Danfoss B –Steinen Q Danfoss SR Danfoss SSteinen S, ST Danfoss SR Danfoss S

The stated values are based on experience and are thus only to be considered as a guideline. When replacing oil nozzles, first and foremost use oil nozzles with the same shape of head.

Conversion table for oil nozzles

Danfoss oil nozzles types H, S, HR, SR and B can replace the following oil nozzles of other makes:

��

Anoilnozzlecanbeusedforaslongasareasonablecarbondioxidepercentage(CO2%)andasuitablylowsootcountcanbemaintained.Whetherthelifeofanoilnozzlewillbe1yearormoreishardtopredict,asitdependsverymuchonhowmanyhourstheplanthasbeenoperatingandhowcleantheoilisandtheconditionofthetank.

Thelifeofanoilnozzleisshortenedconsiderablyif,say,nozzlefilterandpumpfilter,ifany,aremissingorthesepartsaredefectiveordirty.Iftheoilnozzleisexposedtostrongradiantheatfrom,say,heavilyglowingincombustiblematerial,thelifewillbeshortenedtoo,asthestrongheatmaycausetheoiltocokeandcollectaroundthenozzle.

For how long can an oil nozzle

be used?

��

Inconnectionwithservicevisitsthequestionisoftenaskedwhathascausedtheoilnozzletofail?Wewillheretrytodescribesomeofthemostfrequentfaultsandhowtheycanberectified.

Setting of the burnerThemostfrequentfaultisprobablywrongsettingoftheburner.Thevaluesstatedbytheburnermanufac-turermustbeobserved,suchaspumppressure,ad-justmentofignitionelectrodes,etc.Itisespeciallyimportantthattheadjustmentofthetwoignitionelectrodesisstrictlyaccurate(fig.5andfig.6).Itisoffrequentoccurrencethattheignitionelectrodesarenotadjustedcorrectlyandtheignitiongoesfromanelectrodetotheoilnozzle.Thisisclearlyseenfromburnedspotsorfromadvancedgroovesintheoilnozzle.Nowadaysthelocationoftheoilnozzleinrelationtothebaffleplateisoftenoptimizedwithfirmimpactrimsintheburner.Therightsprayangleisalsoveryimportant,bothtopreventtheoilfromtheoilnozzlesprayingagainstthebaffleplateandtopreventthemixtureproportionbetweenairandoilmisttochangebecauseofatoosmallsprayangle.

Fig. 5 and fig. 6: Examples on distance between electrodes

What can disturb the function of the

oil nozzle?

��

The right way to change an oil nozzleWhenchanginganoilnozzle,itisespeciallyimpor-tantthatthenozzleholderisbledwellandtheoilpassagesarecleaned.Afterdemountingoftheoldoilnozzleinahorizontalposition(pos.1),thenoz-zleholderiscleanedwithaclean,flockfreecloth.Thentheburnerisplacedinserviceposition(pos.2)andinthisposition,verticallyupwards,thenozzleholderisfilledtotherimwithfueloil.

Pos.1 Pos. 2

Nowthenewoilnozzleisslowlyscrewedinsothattheairintheoilnozzlecanbeletout.Afterthenewoilnozzlehasbeeninserted,thenozzleplateshouldnotbetouchedwiththefingersanymoretopreventdirtinthenozzleorifices.

Bydoingso,itispreventedthatdirtlooseneddur-ingdemountingoftheoilnozzlestaysinthenozzleholderandlatercausesthenozzletofail.Neveruseaggressionwhenmountingthenozzleasthiscanruinthesealingsurfacebetweentheoilnozzleandthenozzleholder.

Tips for change of the oil nozzle

Suction torque for oil nozzles

Recommended suction torque 15-20 Nm

Maximum suction torque 25 Nm

��

Dirt/sediments in fuel oilTheoilnozzleisequippedwithdifferentfilters,de-pendentonthesizeofthenozzle.Thesenozzlefiltersarenormallyalwayssinteredbronzefiltersinthelowestcapacityareaandhaveverygoodproperties,especiallywhererod-shapedandthreadydirtpraticlesareconcerned.Whensuchparticleshavereachedtheinteriorofthenozzle,theywillsoonruinthenozzle(fig.7).Therefore,therightchoiceofprefilterisofdecisiveimportanceforthelifeoftheoilnozzle(fig.8).

Fig. 7: Dirt sediments in the swirl chamber

Ruined/dirty–newFig. 8: Ruined cartridge filter

Nowadayscartridgefiltersofdifferentfinenessandsizesareavailable.Thusthefinenessfornormalusearerangingfrom100µover50-75µto25-40µ.Butalsocartridgeswithfinenessesof5µareoffered.Afinerpre-filterisalwaystobepreferredtoacoarsepre-filter.Measurethepressuredropregularly!Atoohighvalueindicatesachokedfilter.

What effect have dirt and sediments

in fuel oil?

��

Infairnessithasbeenmaintainedfromthebeginningthatinmostcasestheoilnozzleisnotthecauseofafterdripping.Butwhateverthecausemaybe,afterdrippingfromtheoilnozzlemustinanycircumstancesbestoppedasquicklyaspossibletopreventsoothingupoftheburnerheadortheareaarounditorthecombustionchamber.

Oil drips when the burner startsThiscanhappenduringpreheatingintheoilpreheaterwhentheoilexpandsorduringprepurgeduetoadirtyordefectiveclosingvalveintheoilpump.

Oil is dripping during operation• Theoilnozzleislocatedtoofarfromthebaffle

plateortheburnerhead.• Ignitonelectrodesprotrudeintotheoilmist,so

theyareplacedincorrectly.• Dirtintheoilnozzleoroilcokeinandonthe

nozzleorifice.• Thenozzleorificeisdefective,becauseofattempts

tocleanit.• Toolowoilpressure.Remembertochecknow

andthen.

What causes an oil nozzle to drip?

��

What causes after-drip of oil when the

burner stops?

Afterdrip of oil when the burner stopsWhentheburnerstopsandtheoilnozzlespraysajetofoilinsteadofcuttingofftheoilsupplywithlighteningrapidity,themostlikelyreasonsare:Aslightleakinthesuctionlinemayresultintinyamountsofairgettingintotheoilpump,thepressurelineortheoilnozzle.

Suchanamountofairis,however,notsufficienttodisturbthefunctionoftheburner,butlargeenoughtoproduceanafterdripandevenanoiljetwhentheburnerstops.Thiswilleventuallyleadtothepartsgettingdirtyandcausemalfunction.

Theoilintheoilpressurelinebetweenthepumpandtheoilnozzlecontainsair.

Evenwithaperfectlyoperatingclosingvalveandathoroughbleedingofthepressurelines,afterdripofoilcanbeseenbecauseoftheradiationofheatfromthecombustionchamber,whichexpandstheoilandforcesitintotheoilnozzleaftertheburnerhasstopped.

��

What causesoil coke on theoil nozzle and

ignition electrodes?

Whenliquidoilisheatedaboveacertaintemperatureaprocesstakesplacecalled“cracking”andastone-hardblackcarbonsettles.Undernormaloperatingcondition,theamountofcarbondepositedonthenozzleandignitionelectrodeswillbeunnoticeable.Butjustaslightscratchonthetipofthenozzlecancreateapathalongwhichsmallamountsofoilcanfindtheirway.Thisoilisexposedtoaverystrongra-diantheatandwill,consequently,producecarbononthetipofthenozzleandcauseinterferencewiththeamomizingprocessandcancausepoorercombus-tion.Thesamethinghappenswhentheoilnozzledrips.

Iftheignitionelectrodesareplacedincorrectly,sothattheycanbehitbytheinjectedoil,theheatfromtheflamewillintimestartcarbondepositstobuilduponthetipoftheelectrodes.Eventually,theelectrodeswillshortcircuitandtherewillbenoignitionsparkandplantrestartwillbeimpossible.Cokeformationonoilnozzleandignitionelectrodeswillinevitablyleadtooperatingproblemsandpoorcombustionandmustatallcostsbeavoided.

�0

Tosaytheleast,itisirritatingifnotonedropofoilemergesfromthenozzle.Toeliminatetheproblem,followtherulesbelowfor“immediatehelp”stepbystep.

• Isthereoilinthetank?• Isthevalveonthesuctionlineopenorclosed?• Isthecheck-valveonthesuctionlinethewrong

wayround?• Doesthepumpshaftrotate?• Istheconnectionbetweenpumpandmotorok?• Cananysuctioneffectofthepumpbeseen?• Howmuchvacuumdoesthevacuummeter

show?• Canthepresenceofairbeseeninoneofthe

transparenttesthosesonthesuctionsideofthepump?

Thereasonmaybeatoohighvacuumoraleakysuctionline.

• Isthepumpfiltercleanandingoodorder?• Arethevalves(thehydraulicvalveorthesolenoid

valveofthepump)openandworkingproperly?• Istheredirtintheoilpressurelinetotheoilnozzle?• Isthenozzlefiltercleanandingoodorder?• Istheoilnozzleblocked?• Istheoilverycoldandthick? Perhapssomewaterintheoilhasturnedintoice.

Ifallthesefactorsarecheckedandorderedasnecessary,theoilnozzleshouldsprayoil.

What is the cause of no oil from the

nozzle?

��

Wasteandre-usearetopicalsubjectsatthemomentandthoughtherearemanythingswhichcanbeusedagainandagain,itcannotbeexpectedthatanoldanddirtyoilnozzlewillbeofusetoanybody.Sore-useofanoilnozzlemustthereforebedepreciated.

Forsafety’ssake,oldoilnozzlesmustbethrownawayimmediately.

What to do with the oil nozzle?

What matters are the detailsThesimpleappearanceoftheoilnozzlethrowsitscomplicatedmechanismintotheshade.Thenarrowtolerancesoftheoilnozzleandthefinedetailsplayadecisiveroleforfunctionandperformance.

Accurate toolsAccuracyisthekeytoanoptimumfunction.Sodoestheproductionde-mandthehighestprecision.Danfosstakesmanymeasurestoensurethequality.Thesealsoincludeproductionofembossingarborswhicharegrindedwithtolerancesofonlyafewµm.Thisensurestheformintheinletandtheoutletofthenozzle.

Maximum repititionThefineconeslotsarecutwitharealdiamondtoensurehighestprecisionandthebestsurface.Theprecisemanufactureofthenozzleplateandmeasurementswiththepaternatoren-suremaximumrepetitionofspraypat-tern,sprayangleandperformance.

Compliance with the strictest standardsDanfossoilnozzlesaresecondtononewhencompliancewithinternationalnormsandstandardsareconcerned.Thisappearsfromthelistbelow:• FirstmanufactureroftheEN-oil

nozzle(1992)• Firstoilnozzlemanufacturer

whomettherequirementsoftheOFTEC-standards(1995)

• TheoilnozzleshavebeenapprovedaccordingtoCSA-standard

DanfosshasalsobeenISO-9001certifiedandourproductionplantsmeettheenvironmentalauthorities’conditionsinISO14001.

Danfoss ist der führende Hersteller für Komponenten für

brennbare Flüssigkeiten, die in Haushalt, Gewerbe und

Industrie verwendet werden. Diese Position wurde erreicht

indem die Erwartungen der Kunden übertroffen wurde;

schnelles eingehen auf die gestellten Anforderungen;

Lieferung von hoher Qualität und wettbewerbsfähige

Preise – alles unter Berücksichtigung der Umwelt.

Unser Produktbereich für Brenner und Kessel umfasst:

Ölpumpen, Öldüsen, Ölvorwärmer, Zündeinheiten,

Ölfeuerungsautomaten und Thermostate.

Das Herz der Heizung

brenner.danfoss.com Produced by Danfoss A/S © Industry Service – G1 Advertising 06.09520F0666 DKBD.PB.060.B1.03

520F0638 DKBD.PS.060.A2.02 Danfoss A/S © - G1 Advertising 07.01 FO/bpv roburner.danfoss.com

Danfoss is a leading global manufacturer of components

for combustible liquid burners used in domestic, commercial

and industrial applications. This position has been achieved

by exceeding the expectations of our customers; responding

quickly to their requirements; providing high quality in all

respects and offering competitive prices – all with due con-

sideration for the environment.

Our product range for oil burners and boilers comprises: oil

pumps, oil nozzles, preheaters, ignition units, burner controls

and thermostats.

The Heart of Heating

burner.danfoss.com520F0655 DKBD.PB.060.B1.02 Produced by Danfoss A/S © Industry Service – G1 Advertising 06.09Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies toproducts already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.