Greenhecks new model APD is a direct drive plenum fan with an efficient, 7-bladed backward-curved wheel. With no fan shaft bearings or belts to maintain, the model APD eliminates the extra maintenance and operating costs associated with belt drive fans. The APDs compact size and smaller footprint make installations easy. Designed for fan wall array, air handler retrofit or applications needing to pressurize a plenum room.
Fan Fundamentals 1.1 - You'll understand the objective of fan systems. Key topics include: Terminology, Impeller Types, Drive Types, Test Standards and Fan Performance.
