Manual fired boiler for coal DEFRO Optima Komfort Eko 14

Kocioł zasypowy na węgiel DEFRO Optima Komfort Eko 14
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Price: CHF1,617.17

Regular price: CHF1,938.70

1617.17
The lowest price during 30 days prior to the reduction: CHF1,617.17

The promotion runs until 15 October 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 tilting flap located in the furnace-ash pan doors, controlled by means of 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-emission requirements of class 5 and have an Ecodesign Certificate.

The manufacturer recommends installing the boiler in combination with an accumulation tank and raising the temperature of water returning to the boiler: in the form of a mixing valve or Laddomat. 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 exhaust 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 installation of thermostatic draft gauge;
  • Mechanical control of the combustion process 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 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 size 20-50mm
Hopper chamber capacity [kg] 14 19 20 23 25
Efficiency at nominal 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 weight [kg] 262 275 300 300 355
Boiler water capacity [l] 58 63 76 68 83
Supply and return diameter [in] G 1½”
Flue gas outlet nozzle diameter [mm] Ø 159
Minimum safe accumulation tank capacity [l] 450 600 750 900 1000

Dimensions:

DEFRO solid fuel boiler

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