Sound Vault Specification

Panels of the outer housing shall be constructed out of galvanized steel. Minimum galvanized material gage thickness to be 16 gauge. Enclosure walls shall be lined with sound dampening fiberglass insulation having a thickness of two inches (51 mm) and density of 3 lbs. / ft2. Exterior collars shall provide a connection point for system ductwork. Enclosure shall have quick opening and fully removable gasketed access panel(s) to provide access to all internal components.

To limit breakout noise, inlet and outlet of fan shall be connected to the inside of the enclosure using a slip-fit flexible duct connection. In addition, Sound Vault shall be supplied from factory with internally mounted, one-inch (25 mm) deflection free standing spring isolators.

Grease filled lubrication lines shall be extended to the exterior of the Sound Vault enclosure. Nylon lines will provide lubrication to fan bearings without removing fan from enclosure. Wiring for fan power supply shall be extended to the exterior of the Sound Vault enclosure and electrical connections shall be terminated at an electrical box.

Sound Vault enclosure shall be supplied with two formed steel mounting rails. Rails shall be securely fastened to enclosure and have pre-punched holes in both ends to provide for either ceiling hung or floor mounting configurations.

Radiated sound power attenuation ratings shall be based on factory tests using sound intensity measurement techniques on of both the fan and sound enclosure in combination. Radiated sound power reductions from total sound power shall be available for each of eight octave bands with center frequencies (hz) of 63, 125, 250, 500, 1000, 2000, 4000, and 8000.

Sound Vault enclosure shall be fully assembled with fan at the factory and shipped as a complete assembly up through QEI fan size 27. Temporary restraining brackets are mounted internal to the Sound Vault enclosure to limit movement of fan during transit.