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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.
Code Name Minimum capacity (kW) Maximum capacity (kW)
2058010 BT 40 DSN 4T 50Hz 223.00 446.00
2061010 BT 50 DSN 4T 50Hz 312.00 558.00
2071010 BT 75 DSN 4T 50Hz 446.00 837.00
2076010 BT 100 DSN 4T 50Hz 558.00 1116.00
2081010 BT 120 DSN 4T 50Hz 669.00 1451.00
2086010 BT 180 DSN 4T 50Hz 725.00 2009.00
2101010 BT 250 DSN 4T 50Hz 937.00 3170.00
2131010 BT 300 DSN 4T 50Hz 1220.00 3460.00
2121010 BT 350 DSN 4T 50Hz 1284.00 3907.00