ATTACK WOOD & PELLET 25
ATTACK WOOD & PELLETATTACK WOOD & PELLETATTACK WOOD & PELLETATTACK WOOD & PELLETInstalation example ATTACK WOOD & PELLETPreview of the comprehensive solution ATTACK

ATTACK WOOD & PELLET 25

93% efektivita
  • Innovative, ecological and high efficient boiler – maximal comfort of the customer
  • High combustion efficiency: 90,5 % (wood) – 90,4 % (pellets)
  • Modern electronics with the Lambda probe
  • Graphical and well-readable touch display – intelligent details
  • Automatic cleaning of turbulators and pellet chamber – the highest comfort of cleaning
  • By the wood burning at full output, there is a continuous period of burning of 6 hours
  • Automatic change from the operation with wood to the operation with pellets – flexible fuel selection
  • Very low operating costs
  • High quality components – verified quality
  • Long life
  • Multi-level safety concept – pleasant feeling of safety
  • Big volume of the feeding chamber
  • Option to set the flue gas temperature for better functioning with the chimney
If you are looking for a boiler with low operating costs and comfort comparable with usage of a gas boiler, you have just found it. We are introducing you the ecological combined boiler ATTACK WOOD & PELLET, suitable for burning of several types of fuel, especially soft and hard wood, briquettes and pellets. The boiler is intendended for heating of family houses, huts, small plants, workrooms and similar objects.


To provide the high comfort, the boiler is equipped with the feeding chamber of big volume. Thereby there is an option of the continuous burning at full output for 6 hours. Moreover, if the boiler detects signal for heating, it can automatically start the pellet burning process, after the wood in the wood-gasifying boiler part burns out, without any action into the boiler operation. Thereby you can easily use advantages of the cheapest heat source - wood, in combination with the comfortable and also very cheap heat source – pellets.

Combustion of pellets is ensured by the burner made from the best quality refractory steel. Burner operation is fully automatic. Boiler body is welded from the high quality boiler steel of 6 mm thickness , ensuring long life. Refractory concrete parts are made from the best quality material, strengthened by the refractory reinforcement. Furthermore, the most strained nozzle is treated by a special refractory cast iron, prolonging the boiler’s life, because it is resistant to scoring. Boiler cleaning is very easy. Turbulator and pellet combustion chamber are cleaned automatically. Boiler electronics can be supplemented with the additional modules, enabling control of accumulation tank, mixing circuits, D.H.W. storage tank, solar panels and other heat sources. Boiler state can be also controlled via the LAN internet connection. Electronics is able to provide a month record of the information about operation.

Boiler Safety

The boiler is equipped with the integrated aftercooling circuit, connected to the cold water and ensuring safe cooling down of the boiler in the case of its overheating. The emergency thermostat is the next safety element. In the case of overheating, it stops electrical power supply into the all electrical parts of boiler, except of the pump to cool the boiler down as soon as possible. If the boiler gets overheated, the electronics warns the user by a sound signal. If the boiler works under the pellet mode, it is able to lock the main door by the electrical lock, not to leave the door unperfectly closed or partly open. The boiler has a double protection against the backward burning – the high efficient turnstile feeder and the self-extinguishing hose.

High Efficient Combustion

Boiler achieves particularly high efficiency, exceeding 90,5 % by wood and 90,4 % by pellet combustion. This has been reached also thanks to the vertical tubular exchanger with extraordinary heat exchange area and special, automatically moved turbulators. Thereby is the declared efficiency ensured for the whole boiler’s life.
Output range by wood 12,5 – 25 kW
Output range by pellets 9 – 30 kW
Volume of the feeding chamber 160 l
Width × height × depth 951 × 1 604 × 1 207 mm
Boiler width without covering 760 mm
Efficiency wood 90,5 %
Efficiency pellets 90,4 %
Max. length of wood logs 560 mm
Flue gas temperature 150 ⁰C
Prescribed chimney draught 25 Pa
Boiler weight 840 kg
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ATTACK Ltd. WORLD
Customer service
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ATTACK Ltd. WORLD
ATTACK Ltd. WORLD