Intended use

DAD axial roof fans are used for extracting air from commercial and industrial buildings as well as large-volume rooms and systems. They are suitable for extracting large volumes of air and are highly efficient. DAD fans are used to convey air, which is clean to slightly dusty. Any other use or use that goes beyond this is considered improper use.

Operation of the DAD is only permissible:

• as a permanent installation on a roof with sufficient load-bearing capacity;
• with a roof socket suited to the DAD variant;
• in a horizontal installation position on the fan’s metal base;
• with permanent electrical installation;
• with sufficiently dimensioned vibration damping measures;
• when a flexible cuff is fitted at a duct connection between the DAD fan and a folded spiral-seams duct;
• with protection against accidental contact in accordance with EN ISO 13857, e.g. with SGRI or SGCI protective grille, fitted if there is a free inlet.