Helios Fans VDW EC 400

The Helios VDW EC 400 is a vertical discharge EC roof fan designed for optimal airflow efficiency and long-lasting durability. The fan features a seawater-resistant aluminium housing with an integrated protection guard to withstand outdoor conditions. The galvanised steel motor support and base plate include an inlet cone and threaded bolts for attaching intake air accessories, complying with DIN 24155 (page 3). A bird guard on the outlet side adheres to DIN EN ISO 13857 safety standards.

It incorporates a high-efficiency backward curved centrifugal impeller made from polymers, ensuring smooth, quiet operation and balanced performance to DIN ISO 1940 – 1 standards.

The fan is powered by an energy-saving, speed-controllable EC external rotor motor enclosed in an IP54-rated housing. Ball bearings are moisture-protected for reliable, maintenance-free, and interference-free operation. Integrated electronic temperature monitoring protects both motor and electronics.

Standard equipment includes an external terminal box and isolating switch with IP65 protection, along with an internal potentiometer that enables precise adjustment of fan speed from minimum to maximum. Speed control is continuously variable, either via the built-in potentiometer or an optional universal control system, providing flexible and efficient ventilation solutions.