Helios Fans VDD 630/6

The Helios VDD 630/6 centrifugal roof fan offers vertical discharge and is equipped with an efficiency-optimized aluminium casing. This robust casing is made from seawater-resistant aluminium and includes an integrated protective guard for enhanced durability. The motor support and base plate are constructed of galvanized steel and incorporate an inlet cone. The base plate features threaded bolts for attaching intake air accessories, following the DIN 24155 hole pattern (page 3). A bird guard conforming to DIN EN ISO 13857 standards is fitted on the outlet.

The fan uses a high-performance backward curved centrifugal impeller manufactured from aluminium, which is dynamically balanced in accordance with DIN ISO 1940 – 1 to ensure smooth, vibration-free operation.

It is powered by a totally enclosed, speed-controllable three-phase external rotor motor, rated IP54 for protection against dust and water ingress. The motor utilizes ball bearings with impregnated windings, requiring no maintenance, and includes built-in radio suppression for quiet, reliable performance.