Trane Performance Air Handlers Manual de Instalação descarregar pdf (Página 19)

CLCH-SVN05A-EN 19

Assembly and Installation

• The first elbow in the ductwork leaving the unit should be no closer than 3 fan diameters from

the unit, thereby minimizing noise and resistance.

In those instances where the unit is installed over an acoustically critical area, additional treatment

of the ductwork is recommended. Both supply and return ductwork should be lined internally with

glass fiber duct liner 1-inch thick. The external surface of the supply duct should be covered with

an acoustical barrier material such as one or two pound/sq. ft. sheet lead (1/64-inch or 1/32-inch)

or loaded vinyl sheet or gypsum board for the first 10 ft. of ductwork. The lining should extend from

the point where the duct penetrates the roof to a distance of 10 ft. beyond the vertical drop from

the unit.

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Trane Performance Air Handlers Manual de Instalação Página 19