Contact:  📞 +48 32 415 31 65📱 +48 695 11 88 05
Selling since 1984

Boiler KRS TECH DUO 50kW

NN: 34091 / 27077
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Cost: Individual calculation
(After placing your order we will send you a non-binding offer containing delivery costs.)
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Nominal heating power:

- coal: 50 kW
- pellets: 42 kW
Efficiency: 88 – 89,1%

Warranty: 5 years for welded connections, 2 years for other elements


EKO-TECH boilers with an automatic fuel supply system are meant to be used in central heating installations as well as for warm utility water preparation in housing such as detached houses, stores, garages and utility buildings.

DUO means an automatic retort boiler with full function of the classical (normal) boiler. The boiler may have an additional cast iron grate and an extra large combustion chamber which allows burning of all solid fuels. If necessary, the boiler can burn coal or wood, for a long, not limited time.

Advantages of the EKO-Tech boilers:

- high efficiency
- automatic functioning
- quick and easy maintenance
- economical fuel burning
- smoke free and ecological burning
- possibility to steer CH and DHW pumps
- possibility to install a warm water exchanger
- chromium cast-iron catalyst for exhaust reheat


Technical parameters



For coal

Size of heated surface:



Slow combustion  (full power)



Hopper capacity



For pellets

Size of the heated surface



Slow combustion  (full power)






Primary fuel Other
ekogroszek węgiel kamienny węgiel kostka drewno pelety
Coal 5-25mm Coal Coal Cubes Wood Pellets

Product specification

Power output 50 kW
Exhaust gas pipe diameter 190 mm
Efficiency 89.1 %
Boiler class (303-5:2012) 5
Ecodesign tak
Size of heated surface 500 m²
Water capacity 79 L
Slow combustion 72 h
Weight of boiler with feeder 640 kg
Boiler heating surface 5.0 m²
thickness of steel 6 mm
Height 1400 mm
Width 1250 mm
Depth 950 mm
Depth with exhaust pipe 1260 mm
Max. water temperature 85 °C
Max working pressure 1.5 bar
Required chimney draught 25 Pa
Outlet and inlet size 6/4 inch
Power supply 230
Warranty 60 months


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