Manual fired boiler for coal DEFRO Optima Komfort Eko 17

Kocioł zasypowy na węgiel DEFRO Optima Komfort Eko 17
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Product code: 59512
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Price: £1,601.91

Regular price: £1,921.06

1601.91
The lowest price during 30 days prior to the reduction: £1,601.91

The promotion runs until 24 July 2026

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Description

Boiler DEFRO Optima Komfort Eko is a hopper-fed boiler for hard coal. It has a body made of certified boiler steel sheet. Cooperation with an accumulation tank is required.

Primary air is supplied gravitationally from outside using a tilt flap located in the firebox-ash pan doors, controlled using a draft gauge.

The boiler is adapted for installation in a closed system provided that safety devices are installed in accordance with the boiler DTR and has the possibility to regulate the secondary air supply.

Boilers meet the energy and emission requirements of class 5 and have a Ecodesign Certificate.

The manufacturer recommends installing the boiler in combination with an accumulation tank and with raising the temperature of the water returning to the boiler: in the form of a mixing valve or Laddostat. The minimum return temperature should be 55°C.

Advantages:

  • High thermal efficiency in the range of 90.0 to 90.9% thanks to increased heat recovery from flue gases;
  • Boiler adapted as standard for installation in a closed system provided that safety devices are installed in accordance with the boiler DTR;
  • Heat exchanger made of certified high-grade steel;
  • Change of door opening direction (applies to upper and middle doors);
  • Regulation of secondary air supply;
  • Large hopper chamber;
  • Adapted for thermostatic draft gauge installation;
  • Mechanical combustion process control using a knob in the ash pan doors;
  • Boiler adapted for installation in a closed system provided that safety devices are installed in accordance with the boiler DTR;
  • 3 years warranty on heat exchanger tightness, 2 years on other components and proper boiler operation - provided that installation is in accordance with the boiler DTR;
Specification/boiler type Unit Optima Komfort Eko 9 Optima Komfort Eko 12 Optima Komfort Eko 14 Optima Komfort Eko 17 Optima Komfort Eko 19
Fuel [-] hard coal - nut with granulation 20-50mm
Hopper chamber capacity [kg] 14 19 20 23 25
Efficiency for rated power [%] 90.0 91.0 90.8 90.1 90.4
Energy efficiency class [-] B
Max. permissible working pressure [bar] 1.5
Required flue gas draft [mbar] 0.22 0.16 0.26 0.22 0.26
Water temperature on supply max. [°C] 65/90
Boiler mass [kg] 262 275 300 300 355
Boiler water capacity [l] 58 63 76 68 83
Supply and return diameter [inch] G 1½”
Flue gas outlet socket diameter [mm] Ø 159
Min. safe accumulation tank capacity [l] 450 600 750 900 1000

Dimensions:

Solid fuel boiler DEFRO

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