Serie BT DSN 4T

Technical and functional features

• Heavy oil burners.
• Two-stage operation (high/low flame).
• Compatible with any type of combustion chamber.
• High pressure mechanical atomisation of fuel using nozzle.
• Ability to obtain optimal combustion values by regulating combustion air and blast-pipe.
• Maintenance facilitated by the fact that the atomisation unit can be removed without having to remove the burner from the boiler.
• Air flow regulation for first and second stage by means of electric servomotor with pause closure of gate to prevent any heat dispersion to flue.
• Fuel oil with a viscosity of up to 20°E at 50°C may be used by adding to the burner a kit including:
  • Heating elements for pump.
  • Heating elements for spray nozzle unit.
  • Heating elements for 1st and 2nd stage solenoid valves.
• When using low sulphur heavy oil, add the kit (to order separately) consisting of:
  • Specific oil filter.
  • Stainless steel flexible hoses and resistors for pump.
  • Spray nozzle unit.
  • 1st and 2nd stage solenoid valves.

BT 40 - 50 - 75 - 100 DSN 4T

• Comes with 2 flexible oil pipes, 2 nozzles, 1 oil filter, 1 flange and 1 insulating seal to connect the burner to the application.

BT 120 - 180 DSN 4T

• Comes with 2 flexible oil pipes, 2 nozzles, 1 oil filter, 1 flange and 1 insulating seal to connect the burner to the application.

BT 250 - 300 - 350 DSN 4T

• Comes with 2 flexible oil pipes, 3 nozzles, 1 oil filter, 1 flange and 1 insulating seal to connect the burner to the application.

Design features

• Light aluminium alloy fan part.
• High performance centrifugal fan.
• Combustion air inlet with device to adjust the air flow.
• Sliding boiler coupling flange to adapt the head protrusion to the various types of boilers.
• Adjustable blast-pipe with stainless steel nozzle and deflector disk in steel.
• Three-phase electric motor to run fan and pump.
• Gear pump with pressure regulator and fuel stop-cock valves.
• Atomisation unit with nozzle-closing pin.
• Sequence controller - EN 230..
• Photoresistance flame scanner.
• Control panel comprising stop/go switch, 1st/2nd stage selector, and operation, block and pre-heating resistors on indicators.
• Terminal block for the electrical and thermostatic connections to the burner and to control the second stage of working.
• Electrical plant protection rating IP40.

BT 40 - 50 - 75 - 100 DSN 4T

• Electrical fuel preheater comprising antigas valve, filter, thermometer and minimum and regulation thermostat.

BT 120 - 180 DSN 4T

• Electrical fuel preheater comprising antigas valve, filter, thermometer, minimum and regulation thermostat; security thermostat excluded BT 180.

BT 250 - 300 - 350 DSN 4T

• Electrical fuel preheater comprising antigas valve, filter, thermometer, regulation thermostats and minimum safety device.