The acoustical discharge silencer is a direct coupled unit that mates perfectly with the VAV terminal unit. The VAV casing is lined with 1 inch insulation for optimum noise reduction and is designed to ensure an even velocity profile into the silencer section. The casing design and optimized silencer geometry reduce self-generated noise, minimize pressure drop and maximize acoustic attenuation. Extensive lab testing was used to determine the best combination of terminal and silencer configuration resulting in an assembly which achieves room noise levels of less than NC 35 without the addition of downstream acoustic insulation.
The complete VAV terminal/silencer assembly has been tested and certified in accordance with AHRI Standard 880. The discharge and radiated sound data presented in this catalog is based on complete assemblies tested in the Price lab. No calculations or system effect assumptions are required to determine silencer performance.
In the past, selection of VAV terminals with silencers has been a complex and risky proposition. The designer had to select the silencer from a variety of available models, free areas and sizes, evaluating silencer attenuation, self-generated noise and pressure drop without really knowing the performance effect of a close coupled silencer/terminal combination. Price eliminates the guess work by providing an optimized, fully tested and certified assembly.
These fully tested units with optimized geometry have similar pressure drops to that of standard SDV units. This allows the engineer to eliminate allowances for extra silencer pressure drop in the HVAC system.
Price SDVQ series terminals are designed to take advantage of a silencer’s acoustical and aerodynamic properties producing an extremely quiet unit while maintaining all the Price SDV standard features.