Helios Fans Roof Fan VDW EC 250

Manufacturer: Helios Fans
Designation: Roof Fan 1-Phase, 230 V, EC Motor
Type: VDW EC 250
Mains Frequency: 50 Hz
Rated Voltage: 230 V
Housing Material: Aluminum
Surface Protection Housing: Other
Automatically Integrated Shut-off Damper: No
Airflow Rate: 2650 m³/h
Rated Power: 0.321 W
Medium Temperature: -20..50 °C
Protection Class (IP): IP54
Nominal Diameter Duct: 250 mm

The vertically discharging EC 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 mounting plate and base plate include an inlet 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. High-performance radial impeller with backward-curved blades made of galvanized sheet steel, dynamically balanced according to DIN ISO 1940-1. Energy-saving, speed-controllable EC external rotor motor in a closed design with IP 44 rating and high efficiency. Ball bearing with moisture protection insulation. Maintenance-free and interference-free operation. Integrated electronic temperature monitoring for EC motor and electronics. Standard with external terminal box rated IP 65. Stepless speed control with potentiometer or continuous speed regulation with universal control system.