| Rated thermal output | kW | 28 |
| Boiler class according to EN 303-5 | 5 | |
| Minimal returning water temp. | °C | 55 |
| Recommended working temp. | °C | 75 |
| Highest working temp. | °C | 90 |
| Safety thermostat triggering temp. | °C | 95 |
| Flue gas temperature at rated output | °C | 150...180 |
| Permissible operative pressure | bar | 2.5 |
| Test pressure | bar | 4 |
| Boiler water volume | l | 125 |
| Ash container volume | l | 38 |
| Boiler weight | kg | 196 |
| Boiler dimensions (L/W/H) | mm | 600/600/1510 |
| Intake width without side panels | mm | 500 |
| Combustion chamber volume (L/W/H) | mm | 330/400/700 |
| Mains supply | 230V, 50Hz | |
| Electrical consumption at ignition | W | 500 |
| Electrical consumption during work | W | 50 |
| Electrical consumption at standby | W | 3 |
| Electrical heating element | kW | 6 |
| Combustion air inlet hatch | cm² | ≥200 |
| Burner's fixing flange | mm | 90 |
| Chimney diameter | mm | ≥100 |
| Distance between top connections | mm | 125 |
| Flue gas outlet | ⌀ mm | 112 |
| Boiler top connections | pcs | 2xG1" |
| Number of turbulators | pcs | 4 |
| Boiler back connections | pcs | 2xRp1" |
| Required safety valve connections | pcs | 1xDN20 |
| Efficiency at 70 °C | % | 94 |