Manual fired boiler for coal DEFRO Optima Komfort Eko 45
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15 068,00 zł
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 damper located in the firebox-ash pan doors, controlled by means of a draft gauge.
The boiler is adapted for installation in a closed-loop system provided that safety devices are installed in accordance with the boiler's DTR and has the ability to regulate secondary air inflow.
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-loop system provided that safety devices are installed in accordance with the boiler's DTR;
- Heat exchanger made of certified high-grade steel;
- Change of door opening direction (applies to upper and middle doors);
- Regulation of secondary air inflow;
- Large hopper chamber;
- Adapted for thermostat draft gauge installation;
- Mechanical regulation of the combustion process using a knob in the ash pan doors;
- Boiler adapted for installation in a closed-loop system provided that safety devices are installed in accordance with the boiler's 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's DTR;
| Description/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 temperature at supply | [°C] | 65/90 | ||||
| Boiler weight | [kg] | 355 | 395 | 430 | 465 | 515 |
| Boiler water capacity | [l] | 81 | 96 | 107 | 119 | 132 |
| Supply and return diameter | [in] | G 1½” | ||||
| Diameter of flue outlet stub | [mm] | Ø 178 | Ø 194 | Ø 245 | ||
| Min. safe accumulation tank capacity | [l] | 1200 | 1300 | 1500 | 1800 | 2600 |
Dimensions:
Technical data
| Boiler class (303-5:2012) | 5 |
| Power output | 45 kW |
| Exhaust gas pipe diameter | 245 mm |
| Weight | 515 kg |
| Efficiency | 89.7 % |
| Ecodesign | + |
| Height | 1642 mm |
| Width | 632 mm |
| Depth | 943 mm |
| Outlet and inlet size | 1 ½ G |
| Producer's recommended minimum volume of accumulation tanks | 2600 L |
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