Helios Fans VDD 450/6

The Helios VDD 450/6 is a centrifugal roof fan designed for vertical discharge applications, featuring an efficiency-optimized casing made from seawater-resistant aluminium with integrated protection guard. The motor support and base plate, along with the inlet cone, are constructed from galvanized steel for added durability. The base plate is equipped with threaded bolts to allow secure connection of intake air accessories, adhering to the DIN 24155 hole pattern (page 3). A bird guard on the outlet side is standard and complies with DIN EN ISO 13857 safety requirements.

This model is equipped with a high-efficiency backward-curved centrifugal impeller made from robust polymer materials, dynamically balanced to DIN ISO 1940 – 1 standards to ensure smooth and low-vibration operation.

The fan is powered by a totally enclosed, speed-controllable three-phase external rotor motor with IP 54 protection. The motor features ball bearings with impregnated windings for long-term maintenance-free use and includes radio interference suppression, ensuring consistent and efficient performance.