Helios Fans VDW 225/2

The Helios VDW 225/2 centrifugal roof fan delivers efficient vertical air discharge and is ideal for modern roof ventilation applications. It features a corrosion-resistant, seawater-grade aluminium casing equipped with an integrated safety guard to ensure durability and protection. The motor support and base plate are manufactured from galvanised steel and include an inlet cone for enhanced airflow. The base plate is designed with threaded bolts to fit accessories on the intake side, adhering to DIN 24155 (page 3). A bird guard is fitted as standard on the outlet, conforming to DIN EN ISO 13857 safety standards.

This model uses a high-efficiency, backward curved centrifugal impeller made from galvanised sheet steel, dynamically balanced to DIN ISO 1940 – 1, ensuring smooth and stable performance.

Powered by a totally enclosed, speed-controllable single-phase external rotor motor (IP44 rated), the fan includes ball bearing mounting and impregnated windings for added moisture protection. The unit is designed to operate quietly, maintenance-free, and without radio interference.