Specifications:
The CDVA 400 - 710 is a roof fan made of plastic, designed for direct drive. It offers a performance flow rate ranging from a minimum of 700 m3/h to a maximum of 17,000 m3/h, with static pressure between 50 Pa and 500 Pa. The fan achieves a maximum efficiency of 75% and is available in connection diameters of 400, 450, 500, 560, 630, and 710 mm.

Housing:
The housing is constructed from solid, fibreglass-reinforced plastic, ensuring durability.

Impeller:
The fan features an axial impeller with 12 or 14 blades, optimized for performance through three different positions. The impeller is available in PP material.

Drive:
The fan uses a direct drive system, with the impeller mounted directly to the motor shaft. It is equipped with standard three-phase motors, available in one or multi-stage configurations. Flange motors are used for direct drive, and a service switch is mounted. The motor does not come into contact with waste air.

Accessories:
Available accessories include an automatic damper, a roof base in GFK with heat insulation, and a frequency converter with IP ratings of 66, 54, or 20.

Additional Information:
The document is from the 2008 edition and is subject to alterations. It is copyrighted by COLASIT AG Spiez.