Serie COMIST DSPNM

Technical and functional features

• Dual fuel natural gas/heavy oil burners.
• Two-stage progressive output operation.
• Ability to operate with output modulation by means of automatic RWF40 regulator mounted on the control panel (order separately with the specific modulation kit).
• 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.
• Minimum and maximum 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.
• Tightness gas valve control, EN676.
• Equipping for automatic fuel switching.
• Comes with 2 flexible oil pipes, 1 oil filtre, 1 flange and 1 insulating seal to connect the burner to the application. Nozzle must be ordered separately according to the burner nominal output reqired..

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.
• Electric servomotor with mechanical cam for simultaneous regulation of combustion air and fuel.
• Gas train complete with control, operating, safety and pilot valves, valve seal control, minimum and maximum pressure switch, pressure control and gas filter.
• Gear pump with pressure regulator.
• Atomisation unit with magnet to control the outlet/nozzle return pins.
• Electrical fuel preheater comprising antigas valve, filter, thermometer, regulation thermostats and minimum safety device.
• Sequence controller - EN 298..
• Ultra Violet cel flame scanner.
• Control panel comprising stop/go switch, automatic/manual and minimum/maximum 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 or for the connection of the electronic output regolator.
• Electrical plant protection rating IP40.