Helios Fans VDW EC 450

The Helios VDW EC 450 is a vertically discharging EC roof fan engineered for high efficiency and reliable performance. Housed in a corrosion-resistant aluminium casing, it includes an integrated protection guard for added safety. The motor support and base plate are made from galvanised steel with an inlet cone to promote smooth airflow. The base plate features threaded bolts to accommodate intake-side accessories, following DIN 24155 (page 3) standards. A standard bird guard on the discharge side complies with DIN EN ISO 13857, preventing intrusion by debris or wildlife.

At its core, the fan incorporates a backward curved centrifugal impeller crafted from high-performance polymers. This impeller is dynamically balanced according to DIN ISO 1940 – 1, ensuring smooth and efficient operation.

The unit is driven by an energy-efficient EC external rotor motor in an enclosed IP54-rated design. The motor features ball bearings with moisture-resistant insulation and requires no maintenance. An integrated electronic monitoring system safeguards the motor and electronics against overheating. The fan also includes an external terminal box and isolating switch with IP65 protection. A built-in potentiometer allows easy adjustment of the control voltage to fine-tune fan speed between minimum and maximum. Continuous speed control is possible via the potentiometer or an external universal control system, making it a flexible choice for a variety of ventilation applications.