Logano plus SB315, SB615, SB745 - Buderus

4 Burner4.3 Logatop BE-A blue flame oil burner4.3.1 Equipment overviewThe Logano plus SB315 floor standing oil/gascondensing boiler, oil version up to boiler size 70 kW issupplied as a Unit version with the Logatop BE-A singlestage pressure-jet oil burner from Buderus.Thanks to the blue flame burner principle with optimisedrecirculation, the Logatop BE-A operates with particularlyclean combustion, and due to the low NO x and CO levels,is below the requirements of the BImSchV forNO x < 110 mg/kWh. It is type-tested to EN 267 andregistered.The Logatop BE-A is tested at operating temperature atthe factory. It is therefore ready for immediate operationand can simply be optimised on site. Furthermore, it ischaracterised by high energy utilisation and practicallysoot-free combustion.To stop fuel dripping after shut-off and to reduceemissions, the burner is equipped with an integral oil antileaksystem. It can be serviced easily on account of itseasily accessible components and bayonet fitting. Theceramic blast tube is highly robust with all qualities of ELfuel oil.The burner complies with the following EC directives:• Machinery Directive 89/37/EC• Electromagnetic compatibility EMV 89/336/EEC• Low Voltage Directive 73/23/EECCertificationApprovalnumberTÜV certification to EN 267 00099414001EC type test to Efficiency DirectiveTable 11 CertificationCE00360305/004321Fig. 26Construction of the Logatop BE-A blue flameoil burner1 Oil pump with solenoid valve and oil connection hoses2 Burner motor3 Flame sensor4 Oil burner control unit with reset button5 Blast tube6 Burner casingIn addition, the burner has a connection for a 7-poleburner plug (behind the oil burner control unit).The Logatop BE-A (from date of manufacture 06/2010) isoperated in conjunction with the Logano plus SB315oil/gas with low sulphur fuel oil EL to DIN 51603-1.Furthermore, brand fuel oils can be used with up to10 % FAME (low sulphur fuel oil EL with up to10 % FAME to DIN 51603-6).4.3.2 Function principleThe burner is controlled and monitored by the oil burnercontrol unit. Following a heat demand via the electronicboiler and heating circuit control unit, the burner isswitched on and the oil upstream of and in the nozzle isheated to approx. 65 °C. When starting from cold, thisprocess can take up to three minutes.After the pre-ignition time, the solenoid valve is activatedto release oil and the fuel/air mixture is ignited. A blueflame appears immediately after ignition. The oil that isatomised by the nozzle is evaporated (gaseous) in thiscombustion system by means of the returned hot gases.It is then mixed homogeneously with the combustion airand burned inside the blast tube. The flame sensor mustreport a flame signal before the safety time has elapsed,otherwise a fault shutdown will occur.566 720 642 881-25.1il34Technical guide Floor standing gas/oil condensing boilers Logano plus SB315, SB615, SB745 – 6 720 802 589 (2012/01)