Reviews use, placement, and operation of refrigeration accessories.
Covers primary and secondary control operations. AIR Operation and maintenance of hydronic and forced air systems. Compare hydronic, forced air and steam heating systems and describe the operation, maintenance, and troubleshooting of design and system accessories. Supply air, return air and exhust air fans in relation to the special concerns of the arctic. Supply and return air ductwork, insulation, hangers, and typical fittings, and common diffusers, registers and grills.