Direct Drive Plenum Fans

This design saves space by eliminating traditional scroll housings transitions and diffusers normally found within a plenum.

Direct drive plenum fans.

Look at the direct drive plenum fans manufactured by ziehl abegg a german company that manufactures direct drive plenum fans with the highest efficiency and lowest sound levels in the industry. View wall mounted fans. Equipped with a gusseted mounting panel they are mounted directly to the plenum wall separating the motor and drive components from the process air. Pmd series backward inclined direct drive plenum fan.

Plug fans offer great versatility for complex system configurations. Isolated direct drive plenum fans an isolated plenum fan with backward curved airfoil blades that is both economical and built to last. Pmd series backward inclined direct drive plenum fan. Energy savings with their fan is typically 5 15 higher because of the large back plate and formed special fan blade inlet see below.

Backward inclined airfoil wheels provide high efficiency performance and sound characteristics needed for the most stringent hvac applications. Accessories motors hoods roof curbs. A plenum fan consists of a centrifugal fan wheel without the surrounding housing. Direct drive plenum fans a housed fan contains a scroll or housing that directs the air leaving the fan in one direction figure 1.

Air circulation and mancoolers. The fan wheel pressurizes the surrounding plenum allowing air to discharge in multiple directions. Plenum fans are designed for general hvac applications where large volumes of clean air are required at low to moderate pressures. With no fan shaft bearings or belts to maintain model apd eliminates the cost and maintenance associated with traditional belt drive plenum fans.

They are designed to pressurize the plenum in which they operate and tek plenum fans are suited for supply or return air applications. Spun aluminum and steel fans with direct drives and belt drives for exhaust supply recirculate filter and process applications.