/ Product catalogue / Commercial and industrial ventilation / Roof exhaust fans / Centrifugal / VKV / VKVz 4E 225
| Unit of measurement | VKVz 4E 225 | |
| Phases | - | 1 |
| Minimum supply voltage | V | 230 |
| Maximum supply voltage | V | 230 |
| Power supply frequency | Hz | 50 |
| Rated power | W | 49 |
| Unit current | A | 0.22 |
| Maximum airflow | m³/h | 738 |
| Rotation speed at 50hz | - | 1400 |
| Sound pressure level LpA at 3 m | dB(A) | 45 |
| Weight | kg | 7 |
| Transported air temperature (max) | °С | 50 |
| Transported air temperature (min) | °С | -25 |
| Ingress protection rating | - | IPX4 |
| Ingress protection rating of the drive | - | IP44 |
| Impeller material | - | Plastic |
| Size | mm | 225 |
| Trademark | Vents | |||||
| Model | VKVz 4E 225 | |||||
| Specific energy consumption (SEC) (kWh/(m²/a)) | Cold | Average | Warm | |||
| -53.3 | A+ | -26.3 | B | -10.8 | 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) | 49 | |||||
| Reference flow rate (m³/s) | 0.089 | |||||
| Reference pressure difference (Pa) | 50 | |||||
| Specific power input (SPI) (W/(m³/h)) | 0.152 | |||||
| Control typology | Local demand control | |||||
| Maximum external leakage rates (%) | 2.7 | |||||
| Declared typology | RVU UVU | |||||
| Sound power level (dB(A)) | 65 | |||||
| The annual electricity consumption (AEC) (kWh/a) | Cold | Average | Warm | |||
| 81 | 81 | 81 | ||||
| The annual heating saved (AHS) (kWh/a) | Cold | Average | Warm | |||
| 5536 | 2830 | 1280 | ||||
| A | B | H | ∅D |
|---|---|---|---|
| 417 | 355 | 215 | 210 |
| Name | Photo | Description |
|---|---|---|
| Vents RKV 220-225 |
|
Mounting frame |
| Vents RKVI 220-225 |
|
Mounting frame with thermal-insulating layer |
| Vents FKV 220-225 |
|
Mating flange |
| Vents GKV 220-225 |
|
Flexible connector |
| Vents KKV 220-225 |
|
Backdraft damper |
