Helios Fans DV EC 250 Eco

The Helios DV EC 250 Eco is a roof fan equipped with advanced EC technology to ensure energy-efficient ventilation. Its aerodynamically shaped housing is made from high-quality grey polypropylene and designed for diagonal air discharge. The fan is suitable for operation within a temperature range of ‑30 to +60 °C and includes integrated guide vanes to enhance airflow efficiency. It is intended for horizontal installation.

This model features a mixed flow impeller made from aluminium, dynamically balanced with the motor to ensure smooth and quiet operation. The fan is powered by an electronically commutated DC external rotor motor with ball bearings, designed for continuous operation and maintaining high efficiency even under controlled speed settings. The motor is maintenance-free and designed to minimize radio interference.

Speed adjustment is possible via a stepless control using the optional speed potentiometer (P..10). Additionally, when combined with the universal EUR EC control system (available separately), the fan supports advanced regulation modes including differential pressure, differential temperature, and flow velocity control for optimized ventilation management.