| Technical details | 250 | 250 Compact | 500 | |
| Type of fuel | diesel | diesel | diesel | |
| Heating capacity | kW | 250 | 250 | 480 |
| Required flow @ 85°C | m3/h | 19,4 | 19,4 | 38,4 |
| Efficiency | % | 93 | 92 | 93 |
| Fuel consumption | l/h | 27,5 | 27,5 | 53,2 |
| Max water pressure | bar | 5,5 | 6 | 7 |
| Voltage | V | 230 | 400 | 400 |
| Electrical connection | Type | 16A CEE | 32A CEE | 32A CEE |
| Sound pressure @10m | dB(A) | 61 | 61 | 62 |
| Fuel autonomy | h | 36 | 36 | 18 |
| Width | mm | 1220 | 1210 | 2400 |
| Length | mm | 4200 | 3380 | 4200 |
| Height | mm | 2400 | 2000 | 2400 |
| Operating weight | kg | 2750 | 2350 | 7500 |
| Optional accesories: | ||||
| Cables | Type | 16A CEE 25 m | 32A CEE 25 m | 32A CEE 25 m |
| Flexible hoses | Type | 2” 10 m | 2” 10 m | 4” 10m |