/ Product catalogue / Commercial and industrial ventilation / Inline fans / For round ducts / VK Duo / VK 250 Duo
| Unit of measurement | VK 250 Duo | ||
| Connected air duct size | mm | 250 | |
| Speed | - | 1 | 2 |
| Phases | - | 1 | |
| Minimum supply voltage | V | 230 | |
| Maximum supply voltage | V | 230 | |
| Power supply frequency | Hz | 50 | |
| Rated power | W | 147 | 176 |
| Unit current | A | 0.66 | 0.76 |
| Maximum airflow | m3/h | 642 | 1126 |
| Sound pressure level LpA at 3 m | dB(A) | 37 | 46 |
| Weight | kg | 4.3 | |
| Transported air temperature (max) | °С | 55 | |
| Transported air temperature (min) | °С | -25 | |
| Ingress protection rating | - | IPX4 | |
| Trademark | Vents | |||||
| Model | VK 250 Duo | |||||
| Specific energy consumption (SEC) (kWh/(m2/a)) | Cold | Average | Warm | |||
| -51 | A+ | -24 | C | -8.5 | F | |
| Type of ventilation unit | Unidirectional | |||||
| Type of drive installed | 2-speed | |||||
| Type of heat recovery system | None | |||||
| Maximum flow rate (m3/h) | 955 | |||||
| Electric power input (W) | 168.2 | |||||
| Reference flow rate (m3/s) | 0.186 | |||||
| Reference pressure difference (Pa) | 50 | |||||
| Specific power input (SPI) (W/(m3/h)) | 0.232 | |||||
| Control typology | Local demand control | |||||
| Maximum external leakage rates (%) | 2.7 | |||||
| Declared typology | RVU UVU | |||||
| Sound power level (dB(A)) | 66 | |||||
| The annual electricity consumption (AEC) (kWh/a) | Cold | Average | Warm | |||
| 174 | 174 | 174 | ||||
| The annual heating saved (AHS) (kWh/a) | Cold | Average | Warm | |||
| 5536 | 2830 | 1280 | ||||
| ØD | ØD1 | B | L | L1 | L2 | L3 |
|---|---|---|---|---|---|---|
| 250 | 340 | 354 | 265 | 30 | 30 | 40 |
