Dreizler DUObloc Bivalent burner for boiler plant

dreizler® dual-fuel burner in DUObloc version
Operation infinitely variable modulating (gas and oil)

CE certified and compliant with EN 676 gas burner with blower and EN 267 oil burner
and the EU directives EU/2016/426 Gas Appliance Regulation and 2006/42/EC Machinery Directive

Dual-fuel burner according to EN 676:
• DUObloc version: fan separately on base frame with vibration damper, electric motor
and fan wheel in sheet steel housing, with protective grille and compensator on the discharge port
• Burner housing with gas/oil/air mixing device for the combustion of natural gas and liquefied petroleum gas and
EL fuel oil, other liquid or gaseous fuels on request
• Two-pole ignition transformer device for direct ignition of gas and oil flame
• Flame monitoring via optical flame detector
• Gas deficiency protection and air deficiency protection on the burner
• With marathon® burner technology: The control of the burner power between minimum and maximum
Flame is infinitely variable by the servomotor on the air damper
• Digital firing manager with tested, plug-in wiring, mounted directly on the burner
• Modulating design in gas mode in combination with modulating design in oil mode
(Electronic network)
• Equipment with patented internal exhaust gas recirculation for dual-fuel burners - dreizler® ARZsuper
• Functionally tested and preset at the final test on a three-way® test bench
• Sound pressure level burner approx. 80 dB(A), blower without sound attenuation approx. 95 dB(A), optional blower
with sound attenuation approx. 85 dB(A), each measured in individual operation
• Type tested up to 10 vol-% H2 in natural gas. Higher H2 concentrations on request.

Oil fittings according to EN 267:
• Separate high-pressure oil control station with oil pump and oil safety equipment according to EN
267 mounted in oil pan, with hose connections supply/return, connection between
Burner and high-pressure oil regulating station is carried out on site, depending on the version 2 to 3 lines
•Oil solenoid valves (flow/return)
•Return nozzle in lance with needle shut-off for marathon® ... HIGH TECH
• Switching gas/oil operation fully wired
• Oil pressure gauge flow, oil pressure switch min./max., oil regulator
Gas fittings according to EN 676:
Gas ramp for burner type marathon® .... HIGHTECH consisting of:
• Gas/air ratio regulator in compact valve with two safety shut-off valves
• Gas pressure switch min.
• Gas pressure monitor leak detection
• Impulse lines for air, gas and combustion chamber pressure
• Gas filter, ball valve mounted in separate block with connecting parts
• on order: pressure gauge, test torch with push-button tap, compensator
• All components of the gas ramp are fully assembled and tested for leaks
HINT:
CE certification and CE declaration of conformity only when the burner is supplied with gas ramp, fan
and high-pressure oil control station
Optional additional HIGHTECH equipment with efficient components for energy saving:
• Parameterizable PID load control with temperature sensor or pressure sensor
• Speed control frequency with up to 80% power consumption savings
• Residual oxygen control oxygen for combustion optimization
• Residual oxygen control oxygenplus with CO limit control for additional fuel utilization
in gas mode
• Equipment according to Pressure Equipment Directive PED 2014/68/EU for fired pressure equipment (e.g. steam boilers)