Solid fuel boiler160kW to 250kW (biomass) BURNiT WBS Magna



Steel solid fuel boilers satisfy the heating demands of large sized spaces as public and industrial buildings (160 ou 250kW). Direct connection to closed or open loop heating system. Ready for fitting with pellet burner.

Made in Europe

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Boiler WBS Magna

Owing to its smart design WBS Magna is easy to transport and install in spite of its dimensions. The device is available 160 and 250kW.

Tested and approved according to EN 303-5.

Boiler warranty : 2 years

Product Features


  • Maximum operating pressure of 4 bar.
  • Capable to feed a large-scale heating system.
  • Combustion chamber with large heat exchanging surface and low chamber resistance.
  • The combustion chamber features three-pass flue-gas flow. The mantle fully covers the flue exhaust tubes for optimal heat transfer.
  • Large firebox door ensures easy loading even with bigger logs (up to one meter long).
  • Convenient inspection door in the upper part of the boiler ensures easy cleaning of the flue exhaust tubes.
  • Thermostatic draft regulator for combustion control.
  • Eyepiece for viewing the combustion process.
  • Demountable housing;
  • Flange on the loading door  for fitting of pellet burner

Safety devices


  • Pressure relief valve 4 bar not incl. in the set;
  • Thermostatic draught regulator;
  • Chimney draught flap;
  • Thermometer;

Boiler elements WBS Magna
1. Hot water outlet
2. Safety line
3. Housing
4. High efficiency thermal insulation
5. Fume exhaust tube
6. Water mantle (jacket)
7. Three-pass flue gas flow
8. Combustion chamber
9. Metal grate
10. Transportation openings
11. Air intake door
12. Burner flange (option)
13. Loading door
14. Inspection door
15. Cold water inlet

Technical characteristics

Chart elements boiler WBS Magna




WBS Magna
Nominal heat outputkW160250
Height Hmm18002150
Width L / Depth Dmm850 x 1880950 x 2070
Water mantle volumeL500790
Combustion chamber volumeL350560
Required chimney draughtPa/mbar42/0.4242/0.42
Insulation boilerHigh-efficiency thermal wool
Insulation doorsHigh-efficiency thermal wool
Recommended fuelWood, humidity 20%, wood briquettes, wood + coals, wood + fruit pits /  boken nuts
Max. length of firewood logsm0.81
Burning time partial / full loadh4.5 / 35.5 / 3.5
Min. return water temperature°C6060
Exhaust gas temperature (operation mode)°C120-150150-180
Operating temperature range°C65-8565-85
Operating pressurebar44
Weight without insulation / with insulationkg1100 / 11701550 / 1630
Cold water inletA, mmDN 80/250DN 80/245
Hot water outletB,mmDN 80/1880DN 80/2100
Safety lineK1, mmDN 40/1800DN 40/2100
K2, mmDN 40/500DN 40/500
FlueF, ø / mmø250 / 1480ø300 / 1730
J, mm425475
Flue cleaning opening01,mm12701450
02, mm12701450
Chimney draught flapGYes
Loading doorN, mm450 x 400520 x 580
Inspection doorP, mm820 x 735920 x 850
Air intake doorR, mm460 x 230600 x 230
Thermostatic draught regulatorT, mm12501450
DrainY, mmG1"/150G1"/150
Eyepiece for viewing the combustion processVYes
Burner flange (option)ZYes


For product measurements, they should be read as follows:

Cold water inletA, mmR1¼ "/ 450
Y, mmmG½ "/ 232

A is shown in the previous diagram. "R1¼" and "G½" are the measure in inches of the opening. "R" is male and "G" is female. The measurements in inches indicate the distance between the floor and the opening.

Recommended clearances between the boiler and walls

Burnit WBS Magna

Relation between wood heating value and water content

Burnit WBS Magna

Overall dimension of boiler body and housing, model WBS 160 Magna / WBS 250 Magna

Burnit WBS Magna

Burnit WBS Magna

Connecting the boiler to a chimney

Burnit WBS Magna

Interdependence between boiler rated power and chimney dimensions

Burnit WBS Magna

Connecting the thermostatic draft regulator

Burnit WBS Magna

Connection of BURNiT WBS Magna boiler in a closed system

Burnit WBS Magna


1 - Thermostat
2 - Expansion vessel
3 - Safety valve
4 - Circulation pump
5 - Cold water collector
6 - Hot water collector
7 - Heating circuit 2 pump
8 - Return valve
9 - Heating circuit 1 pump
10 - Mixer valve
11 - Air vent

Connection of BURNiT WBS Magna boiler in an open system

Burnit WBS Magna

1 - Cold water inlet
2 - Drainage
3 - Air vent line
4 - Expansion vessel (open)
5 - Return valve
6 - Insulation
7 - Hot water outlet

Data sheets and documentation