Manual fired boiler for coal DEFRO Optima Komfort Eko 24
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DKK20,185.71
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 housing 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 system provided that safety devices are installed in accordance with the boiler DTR and has the ability to regulate secondary air supply.
Boilers meet energy and emission requirements of class 5 and have 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 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 doors (applies to upper and middle doors);
- Regulation of secondary air supply;
- Large hopper chamber;
- Adapted for installation of thermostatic draft gauge;
- Mechanical regulation of combustion process using a knob in the ash pan door;
- 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 22 | Optima Komfort Eko 24 | Optima Komfort Eko 28 | Optima Komfort Eko 35 | Optima Komfort Eko 45 |
| Fuel | [-] | hard coal - nut with granulation 20-50mm | ||||
| Hopper chamber capacity | [kg] | 31 | 33 | 35 | 35 | 45 |
| Efficiency at nominal power | [%] | 89.9 | 90.4 | 90.7 | 90.0 | 89.7 |
| Energy efficiency class | [-] | B | ||||
| Max. allowable working pressure | [bar] | 1.5 | ||||
| Required flue gas draft | [mbar] | 0.24 | 0.30 | 0.30 | 0.32 | 0.31 |
| Max. water supply temperature | [°C] | 65/90 | ||||
| Boiler weight | [kg] | 355 | 395 | 430 | 465 | 515 |
| Water capacity of boiler | [l] | 81 | 96 | 107 | 119 | 132 |
| Supply and return diameter | [in] | G 1½” | ||||
| Diameter of flue gas outlet nozzle | [mm] | Ø 178 | Ø 194 | Ø 245 | ||
| Min. safe capacity of accumulation tank | [l] | 1200 | 1300 | 1500 | 1800 | 2600 |

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