Helios Fans VDD 450/4 T120

The Helios VDD 450/4 T120 is a roof fan engineered for vertical air discharge, optimized for continuous operation with air temperatures up to 120°C. It features a seawater-resistant aluminium casing equipped with integrated protective guards. The motor is mounted outside the airflow, making the fan suitable for kitchen exhaust applications that comply with VDI 2052 standards.

The motor support and base plate, including the inlet cone, are constructed from galvanized steel. Threaded bolts on the base plate facilitate the attachment of intake air accessories, following the DIN 24155 hole pattern (page 3). A bird guard is installed on the outlet side as standard, conforming to DIN EN ISO 13857 safety regulations.

Equipped with a high-efficiency backward-curved centrifugal impeller made from aluminium, the fan is dynamically balanced in accordance with DIN ISO 1940 – 1 to ensure quiet, vibration-free operation.

The unit is powered by a speed-controllable, totally enclosed, three-phase external rotor IEC motor rated IP 54. It features ball bearings with impregnated windings for maintenance-free performance and includes radio interference suppression for reliable operation under demanding conditions.