Serie COMIST N

Technical and functional features

• Dual fuel natural gas/heavy oil burners.
• Two-stage operation (high/low flame).
• Compatible with any type of combustion chamber.
• Air-gas mixing at blast-pipe and 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 mixing unit and 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.
• Equipping for automatic fuel switching.

COMIST 72 N

• Ability to link the gas burner train to valves seal control device.
• Comes with 2 flexible oil pipes, 2 nozzles, 1 oil filter, 1 flange and 1 insulating seal to connect the burner to the application.

COMIST 122 N - COMIST 180 - 250 - 300 NM

• Tightness gas valve control, EN676.
• Comes with 2 flexible oil pipes, 2 nozzles (only COMIST 122), 1 oil filter, 1 flange and 1 insulating seal to connect the burner to the application. Nozzle must be ordered separately for COMIST 180/250/300..

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.
• A three-phase electric motor to run fan and another to run the pump.
• Air pressure switch to ensure the presence of combustion air.
• Sequence controller - EN 298..
• Ultra Violet cel flame scanner.
• Control panel comprising stop/go switch, 1st/2nd stage selector, fuel change switch, and operation, block, pre-heating resistors on and fuel used indicator.
• Terminal block for the electrical and thermostatic connections to the burner and to control the second stage of working.
• Electrical plant protection rating IP40.

COMIST 72 N

• Gas train complete with operation and safety valve, minimum pressure switch, pressure regulator and gas filter.
• Gear pump with pressure regulator, fuel stop-cock valve and safety valve.
• Atomisation unit with nozzle-closing pin.
• Electrical fuel preheater comprising antigas valve, filter, thermometer and minimum and regulation thermostat.

COMIST 122 N - COMIST 180 - 250 - 300 NM

• Gas train complete with operation and safety valve, valves seal control, minimum pressure switch, pressure regulator and gas filter.
• Gear pump with pressure controller (fuel on/off valve and safety valve for COMIST 122 only).
• Spray nozzle unit with closing pin on nozzle for COMIST 122; spray nozzle unit with magnet for controlling nozzle delivery/return pins for COMIST 180 - 250- 300.
• Electrical fuel preheater comprising antigas valve, filter, thermometer and minimum and regulation thermostat.