Helios Fans Roof Fan VDW 225/4

Manufacturer: Helios Fans
Designation: Roof Fan 1-Phase, 230 V, 4-pole
Type: VDW 225/4
Mains Frequency: 50 Hz
Rated Voltage: 230 V
Housing Material: Aluminum
Surface Protection Housing: Other
Integrated Automatic Shut-off Damper: No
Air Flow Rate: 640 m³/h
Rated Power: 43 W
Medium Temperature: -20..70 °C
Protection Class (IP): IP44
Nominal Diameter of Duct: 225 mm

The vertically discharging roof fan features an efficiency-optimized aluminum housing and a newly developed high-performance radial impeller. The housing is made of seawater-resistant aluminum with integrated protection against accidental contact. The motor support plate and base plate include an intake nozzle made of galvanized steel. The base plate is equipped with threaded screws for attaching suction-side accessories (hole pattern according to DIN 24155, sheet 3). A protective grille is standard on the discharge side in accordance with DIN EN ISO 13857. The high-performance radial impeller has backward-curved blades made of galvanized sheet steel. Dynamically balanced according to DIN ISO 1940-1. The fan is equipped with a speed-controllable single-phase AC external rotor motor in a closed design rated at IP44. It features ball bearings with moisture protection insulation. Maintenance-free and interference-free operation. Standard with an external terminal box rated at IP 65.