Helios Fans VDD 500/4 T120

The Helios VDD 500/4 T120 is a robust roof-mounted fan designed for vertical air discharge and continuous airflow handling at temperatures up to 120°C. Its design positions the motor outside the airflow path, making it especially suitable for kitchen exhaust systems in accordance with VDI 2052 guidelines.

The fan housing is made from corrosion-resistant, seawater-grade aluminium and includes an integrated protective guard for enhanced durability. The galvanized steel motor support and base plate, combined with an aluminium inlet cone, ensure structural integrity. Threaded bolts on the base plate allow for straightforward mounting of intake-side accessories, following the DIN 24155 hole pattern (page 3). A standard bird guard on the outlet side complies with DIN EN ISO 13857 safety requirements.

This model is fitted with a high-efficiency backward-curved centrifugal impeller constructed from aluminium and dynamically balanced in accordance with DIN ISO 1940 – 1 to ensure low-noise, vibration-free performance.

The VDD 500/4 T120 is powered by a speed-controllable, totally enclosed, three-phase external rotor motor with IP 54 protection. It includes ball bearings with impregnated windings for maintenance-free operation and features built-in radio interference suppression, making it ideal for high-temperature ventilation environments.