High-temperature centrifugal roof fan for direct or ducted ventilation of commercial and industrial buildings. It features horizontal discharge, high efficiency, and a low noise level. The housing is made of galvanised sheet steel, and the weather protection bonnet is made of aluminium with openings for motor cooling. Installation is simple, and the motor is located outside the air flow. This fan is suitable for high temperatures ranging from +65 °C to +200 °C, with radial impellers that have backward curved blades made of galvanised sheet steel. The radial impellers are statically and dynamically balanced.

The motor is an asynchronous three-phase type with a protection class of IP 55, featuring two speeds and a Y/Δ circuit. 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 is too high.

Electrical connection is made in the terminal box on the motor. Safety instructions indicate that the fan may only be operated if the contact protection for the impeller is guaranteed in accordance with DIN EN ISO 13857.

Specifications include:

• Flow rate: 7469 m³/h / 9958 m³/h
• Speed: 720 1/min / 970 1/min
• Impeller type: radial
• Speed controllable: yes
• Reversible: no
• Voltage type: three-phase
• Rated voltage: 400 V
• Mains frequency: 50 Hz
• Rated power: 550 W / 1300 W
• Current: 2.23 A / 4.07 A
• Protection rating: IP 55
• Thermal class: F
• Pole-changing: yes
• Installation location: roof
• Installation position: vertical
• Housing material: aluminium / galvanised sheet steel
• Impeller material: galvanised sheet steel
• Colour: silver
• Weight: 80 kg
• Weight with packaging: 91 kg
• Nominal width: 630 mm
• Width: 815 mm
• Height: 810 mm
• Depth: 1100 mm
• Width with packaging: 1150 mm
• Height with packaging: 965 mm
• Depth with packaging: 1150 mm
• Fluid temperature at maximum: 65 °C to 200 °C
• PTC DIN 44082: M 100.