Centrifugal roof fan for direct or ducted ventilation of commercial and industrial buildings. Vertical discharge with a low noise level. The housing is made of galvanized sheet steel, and it features a weather protection bonnet made of plastic. The motor is located outside the airflow and is suitable for temperature ranges from -20 °C to +80 °C. Sturdy transport lugs enable transport by crane.

Motor specifications include a three-phase motor with protection class IP55, operating mode S1 (continuous operation), and speed control via a frequency converter. The permissible frequency range for speed control is 20-50 Hz. The temperature in the fan motor is monitored by PTC thermistors, which must be connected to a tripping system that disconnects the fan from the mains if the temperature exceeds safe limits.

Electrical connection is made in the terminal box on the motor. The fan has a flow rate of 29,986 m³/h, a speed of 970 rpm, and a radial impeller type. It is not reversible. The voltage type is three-phase with a rated voltage of 400 V and mains frequency of 50 Hz. The rated power is 5,500 W with an operating current of 11.4 A. The protection rating is IP 55, and the thermal class is F.

The fan is designed for roof installation in a vertical position. The housing material is galvanized sheet steel, and the impeller material is also galvanized sheet steel. The color is grey. The weight of the fan is 258 kg, and the weight with packaging is 268 kg.

Dimensions include a nominal width of 900 mm, width of 1,600 mm, height of 1,180 mm, and depth of 1,600 mm. The dimensions with packaging are width 1,700 mm, height 1,985 mm, and depth 1,700 mm. The fluid temperature range is -20 °C to 80 °C, and it complies with PTC DIN 44082: M 100.