Boiler Defro KDR 3 40 kW

Boiler Defro KDR 3 40 kW

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- 4 years for tightness of the boiler's exchanger,
- 2 years for other elements.

Product specification

Power output 40 kW
Exhaust gas pipe diameter 194 mm
Weight 511 kg
Efficiency 83 %
Min. chimney diameter 210 mm
Size of heated surface 400 m²
Water capacity 151 L
Boiler heating surface 3.6 m²
Inner metal sheet thickness 6 mm
Height 1650 mm
Width 747 mm
Exhaust pipe distance measured from the floor to its base 1303 mm
Depth 1088 mm
Max. water temperature 90 °C
Max working pressure 1.5 bar
Loading compartment dimensions 458 x 288 mm
Size of the combustion chamber (width/depth/height) 458 x 547 x 424 mm
Required chimney draught 32 Pa
Minimum chimney section 19 x 19 cm²
Min. chimney height 9 m
Outlet and inlet size 1 1/2 inch
Min. incoming water temperature 65 °C


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