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Combined solid fuel boilers Retra-4M

power from 25 to 2000 kW

Solid fuel boiler Retra-4M is a structure made of solid sheet steel, a boiler with a system automated fuel supply.

Works in two modes:

  • Manual fuel supply (wood, coal, briquette, etc.) .. Fuel is loaded through special hatch. The process of efficient combustion of fuel in the furnace occurs due to the intensive supply of air around the perimeter of the camera. This forms an "air cocoon" around the fuel. Gas did not burn out in the firebox due to lack of air burns out due to the supply of secondary air, ensuring a high efficiency.
  • Automatic fuel supply (pellets, coal with a fraction of up to 15 mm, chips, husks). Fuel loading carried out automatically from the hopper by a screw auger (driven by a geared motor) to the pellet burners. The most efficient combustion of fuel in a pellet burner is due to the blowing of air fan. The operation of the screw conveyor and fan is controlled by a microprocessor-based thermostat.

Design features

  • two furnaces - the upper one is for sleeping with great fires, the lower one is for sleeping for help retort (pellet) pallet of dr_b firing
  • robot in manual and automatic mode
  • The increase in the volume of the bunker will provide without interruption to the boiler robot up to 3-5 dB
  • pod_yne zapob_gannya light at the feed schnet.

The principle of operation of automation

During and after the automatic loading of the necessary portion of fuel to the burner, the fan intensively pumps air to achieve a stable combustion temperature. This cycle is repeated until the temperature of the water in the boiler rises to the set thermostat base values. After that, the automation goes into combustion mode. When the temperature drops to the specified minimum level (recommended: 40-45 ° С), the automatic loading of fuel from hopper and turning on the fan and the boiler operation cycle is repeated.

If the temperature reaches the set maximum level (recommended: 85-90 ° C), automatic cuts off the fuel supply and the fan goes into the support state.

Also, the thermostat is able to control the operation of the central heating pump in accordance with the set parameters.

Solid fuel boilers Retra (Rivne, Ukraine)

Твердотопливный котел

from 25 to 2000 kW

Твердотопливный котел

from 25 to 2000 kW

Твердотопливный котел

from 10 to 32 kW

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