/ Product catalogue / Commercial and industrial ventilation / Roof fans / Centrifugal / VKV / VKVz 4E 250
| Unit of measurement | VKVz 4E 250 | |
| Minimum supply voltage | V | 230 |
| Maximum supply voltage | V | 230 |
| Power supply frequency | Hz | 50 |
| Rated power | W | 48 |
| Unit current | A | 0.23 |
| Maximum airflow | m3/h | 820 |
| Sound pressure level LpA at 3 m | dB(A) | 46 |
| Weight | kg | 12.1 |
| Transported air temperature (max) | °С | 50 |
| Transported air temperature (min) | °С | -25 |
| Ingress protection rating | - | IPX4 |
| Ingress protection rating of the drive | - | IP44 |
| Trademark | Vents | |||||
| Model | VKVz 4E 250 | |||||
| Specific energy consumption (SEC) (kWh/(m2/a)) | Cold | Average | Warm | |||
| -53.4 | A+ | -26.4 | B | -10.9 | E | |
| Type of ventilation unit | Unidirectional | |||||
| Type of drive installed | Variable speed | |||||
| Type of heat recovery system | None | |||||
| Maximum flow rate (m3/h) | 460 | |||||
| Electric power input (W) | 47 | |||||
| Reference flow rate (m3/s) | 0.089 | |||||
| Reference pressure difference (Pa) | 50 | |||||
| Specific power input (SPI) (W/(m3/h)) | 0.146 | |||||
| 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 | |||
| 77 | 77 | 77 | ||||
| The annual heating saved (AHS) (kWh/a) | Cold | Average | Warm | |||
| 5536 | 2830 | 1280 | ||||
| A | B | C | ∅D |
|---|---|---|---|
| 481 | 425 | 240 | 285 |
