Manual fired boiler for coal DEFRO Optima Komfort Eko 9
Regular price:
$2,404.00
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 tilting flap located in the firebox-ash pan doors, controlled by means of a draft gauge.
The boiler is adapted for installation in a closed circuit system provided that safety devices are installed in accordance with the boiler DTR and has the ability to regulate the secondary air supply.
Boilers meet the energy-emission requirements of class 5 and have an Ecodesign Certificate.
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 circuit system provided that safety devices are installed in accordance with the boiler DTR;
- Heat exchanger made of certified high-grade steel;
- Ability to change the opening direction of the doors (applies to upper and middle doors);
- Regulation of secondary air supply;
- Large hopper chamber;
- Adapted for installation of a thermostatic draft gauge;
- Mechanical regulation of the combustion process using a knob in the ash pan door;
- Boiler adapted for installation in a closed circuit system provided that safety devices are installed in accordance with the boiler DTR;
- 3 years warranty on the tightness of the heat exchanger, 2 years on other components and proper operation of the boiler - 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 |
| Diameter of supply and return | [inch] | G 1½” | ||||
| Diameter of flue gas outlet port | [mm] | Ø 159 | ||||
| Min. safe accumulation tank capacity | [l] | 450 | 600 | 750 | 900 | 1000 |

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