Roof Mounted Vertical Discharge Centrifugal Fan
- Standard size 350mm
- Air volume flow rates up to 1.018 m3/s
- Static pressures up to 314 Pa
- Suitable for operating temperatures up to +60℃
- Can be mounted at angles of up to 30°
- Available in AC
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The Clearflow CF range of vertical discharge centrifugal roof fans incorporate advanced backward curved impellers, with three dimensional profiled blades.
Features and Benefits
Vertical discharge of air, projects odours away from potential occupied areas.
Can be mounted at angles of up to 30° which means the fans can be fitted directly to pitched roofs. Spigot is on the underside of the unit and can be fitted directly to the main duct.
External roof mounting outside of the building is ideal where space is a premium. Bird guard fitted as standard to stop damage by wildlife.
Energy cost savings are achieved by providing the highest efficiency at operating point with virtually no air, performance or redirecting losses thanks to the unique impeller blade geometry.
Wind guard fitted as standard to reduce noise, and draughts entering the duct. Easily removable for cleaning and maintenance.
A range of transformer voltage controllers used to provide five speed step control of single phase or three phase motors. Reduced fan speed can provide significant cost-savings through lower energy consumption in both mechanical energy of motors and also on the conditioning of replacement air.
Each CF has a 12 month warranty.
The all metal fan casing provides a long lasting and robust construction. The casings are manufactured from pregalvanised sheet steel. The wind band shall provide easy access for cleaning and maintenance. Units shall be suitable for mounting at angles up to 30°.
Motors shall be AC external rotor motor, with sealed for life ball bearings. All units are suitable for operating temperatures up to +60℃.
Impellers shall be made from high-performance composite material with 7 backward-curved, aerofoil section blades. Three dimensional blade geometry with diagonal air discharge shall provide high efficiency and low acoustic emissions, directly driven by the motor to provide a smooth airflow through the unit.
Speed control shall be via stepped transformer.
Units are to be designed and manufactured with procedures as defined in BS EN ISO 9001. All Clearflow CF units are to be tested to ISO 5801 (airside performance) and BS 848 Part 2 (sound performance).
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