Helios Fans VDW 200/4

The Helios VDW 200/4 centrifugal roof fan is engineered for vertical air discharge, offering dependable performance in various ventilation applications. Its casing is crafted from seawater-resistant aluminium, ensuring long-term corrosion resistance and structural integrity. The unit includes an integrated protection guard for added safety. The galvanised steel motor support and base plate incorporate an inlet cone for streamlined airflow. The base plate is fitted with threaded bolts, following DIN 24155 (page 3) specifications, to enable secure attachment of intake-side accessories. A bird guard compliant with DIN EN ISO 13857 is standard on the outlet side.

The fan features a high-efficiency, backward curved centrifugal impeller made from galvanised sheet steel and dynamically balanced in accordance with DIN ISO 1940 – 1 for smooth, vibration-free operation.

It is driven by a totally enclosed, single-phase external rotor motor with IP44 protection. The motor is speed controllable, ball bearing mounted with impregnated windings for moisture resistance, and designed for maintenance-free and interference-free operation.