MAT BW Classic 55, 55kW

Solid fuel boiler MAT BW Classic 55 for central heating of premises up to 380m². Constructed for solid fuel burning - wood, wood briquettes class B and coal.

€1,477.21 €1,231.01
Availability: In stock

Steel boiler with natural air feed, controlled by a thermostatic draught regulator. Solid fuel boilers BW-A range in nominal output from 25 to 110 kW to satisfy the heating demands of medium to large sized spaces. They are engineered for burning solid fuel and provide the option for fitting pellet  burners.

Product features


The boiler is manufactured from high quality steel with 5mm thickness. The combustion chamber has a large heat exchanging surface and low chamber impedance. Large firebox door ensures easy loading even of large chunks of wood.


To increase the heat exchange, the combustion chamber's surface is ribbed and designed for a three-pass flue gas flow. The mantle completely envelops the firebox for maximized usage of the heat. The boiler's body is insulated from the external conditions by very thick high temperature resisting wool. This series uses a thermostatic draught regulator that opens or closes a flap on the lower door, depending on the amount of air needed for the burning process.

  • Ribbed chamber surface and three-pass flue gas flow for improved heat exchange
  • Burner flange on lower door for pellet burners

Safety devices

For a safe and reliable operation of the boiler, a number of safety devices are installed

  • Pressure relief valve 3 bar included in the delivery set
  • Safety heat evacuator - a tap-water-filled line passes through the upmost part of the boiler body. In case of overheating it is triggered open by a thermostatic valve (not included) to evacuate the heat off the boiler.
  • Exchangeable metallic ash grate protects the chamber base from the flame

This appliance complies with EN 303-5 and has CE Certification

Wood boiler MAT Classic Schematic



1 Combustion chamber
2 Substructure
3 Upper water rib
4 Middle water rib
5 Lower water rib
6 Smoke tubes
7 Flue
8 Valve for adjusting the chimney draft
9 Flue cleaning opening
10 Cooling loop
11 Cooling loop inlet/outlet
12 Cold water inlet 
13 Hot water outlet 
14  Safety line sleeve 
15  Lower inspection door 
16  Loading door 
17  Secondary air flap 
18  Lower safety door 
19  Upper safety door 
20  Flue gas door 
21  Safety grill 
25  Ash and soot container 
26  Burner opening 
27  Air distributor 
More Information
Warranty 2 Years
Weight (kg) 420.0000
Country of Manufacture Bulgaria
Heat output (kW) 55
Approximate heating surface (m²/ft²) 240 - 380
Approximate heating capacity (m³) 1026
Dimension Depth (mm) 1070
Dimension Width (mm) 690
Dimension Height (mm) 1320
Construction material Steel
Mantle volume (L) 117
Insulation boiler high efficiency thermal wool
Insulation doors high efficiency thermal wool
Combustion chamber volume (L) 110
Combustion viewer Yes
Hydraulic kit included No
Pellet burner No
Operating pressure (bar) 3
Operating temperature range (°C) 65 - 85
Maximum water temperature (°C) 95
More Information
Min. return water temperature (°C) 60
Recommended fuel Wood up to 20% humidity, wood briquettes , coal
Fuel Type Wood, Briquettes, Coal
Maximum length of the firewood logs (mm) 550
Flue (mm) 180
Exhaust gas temperature (operation mode), °C <200
Exhaust Location Back side
Control panel No
Automatic cleaning system No
Certification CE
Cold water inlet G 1 1/2''
Hot water outlet G 1 1/2''
Cooling loop Yes
Safety heat evacuator inlet/outlet G 1/2''
Overheating protected Yes
Door sealing Yes
Drain G 1/2''
Burner flange (optional) Yes
Ash and soot container Yes
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