Direct Drive Plenum Fans

Greenheck s new model apd plenum fan features a direct drive fan with the wheel connected to the motor shaft.

Direct drive plenum fans.

Plenum fans are designed for general hvac applications where large volumes of clean air are required at low to moderate pressures. Direct drive plenum fans a housed fan contains a scroll or housing that directs the air leaving the fan in one direction figure 1. Backward inclined airfoil wheels provide high efficiency performance and sound characteristics needed for the most stringent hvac applications. Equipped with a gusseted mounting panel they are mounted directly to the plenum wall separating the motor and drive components from the process air.

A plenum fan consists of a centrifugal fan wheel without the surrounding housing. Pmd series backward inclined direct drive plenum fan. With no fan shaft bearings or belts to maintain model apd eliminates the cost and maintenance associated with traditional belt drive plenum fans. Spun aluminum and steel fans with direct drives and belt drives for exhaust supply recirculate filter and process applications.

Pmd series backward inclined direct drive plenum fan. Includes both direct and belt drive fans with various impeller types suitable for in wall mounted applications. Air circulation and mancoolers. Energy savings with their fan is typically 5 15 higher because of the large back plate and formed special fan blade inlet see below.

Plug fans provide high efficiency recirculation air with the benefit of easy installation and removal. Isolated direct drive plenum fans an isolated plenum fan with backward curved airfoil blades that is both economical and built to last. They are designed to pressurize the plenum in which they operate and tek plenum fans are suited for supply or return air applications. Plug fans offer great versatility for complex system configurations.

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. Accessories motors hoods roof curbs.