The CCD is designed to handle both supply and return air requirements in a single unit.

    Conditioned air is supplied at the outer parameter, while the return is extracted through the center core.

    The center core which is the return part is made of extructed aluminium a may be supplied with performed core pattern which is shown in the picture.

The size can be determined according to the supply and return air flow requirement. The return occupies merely the center core of the diffuser, which is usually of a negligible effective area.

    The minimum size of the center core is 75mm, while the maximum size is equal to nominal size of the CCD minus 75mm. Nevertheless, the size of the core must be in the steps of 75mm

CPD with perforated core pattern

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