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Selling since 1984
Piston feeder boiler STALMARK 50 kW

Piston feeder boiler STALMARK 50 kW

NN: 27393 / xxx
Available Options
- 48 months for tightness
- 24 months for electronic parts

Coal of a granulation from 5 to 40mm

Thanks to its construction Duo Boss is one of the most adjustable boilers with piston feeder. It can be used in both big and small boiler rooms.

Its combustion chamber has side piston feeder and water grate. The boiler is equipped with modern ST-609H controller used for central heating pomp, hot utility water, floor heating and circulating pomp.


Product specification

Power output 50 kW
Exhaust gas pipe diameter 180 mm
Weight 690 kg
Efficiency 89.2 %
Size of heated surface 450 m²
Water capacity 180 L
Boiler heating surface 4.5 m²
thickness of steel 6 -10 mm
Height 1432 mm
Width 672 mm
Depth 1594 mm
Max. water temperature 95 °C
Max working pressure 1.5 bar
Loading compartment dimensions 400 x 273 mm
Size of the combustion chamber (width/depth/height) 450x200x310 mm
Required chimney draught 20-30 Pa
Min. chimney height 6.5 m
Outlet and inlet size 6/4 inch
Min. incoming water temperature 55 °C
Power supply 230V


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