Exhaust Fan Silencer Installation

When attached to an inline or remote fan the ld silencer dramatically reduces the sound traveling through the duct. Where vertical applications are required aerodynamically enhanced acoustic plenums can be provided. Flexible seals between the silencer and fan can be eliminated by mounting the silencer on support legs and vibration isolation pads so that the.

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The available types of axial fan silencers include media filled with film liner dissipative media filled and no media designs.

Exhaust fan silencer installation.

Fantech ld silencers are typically used for kitchen exhaust systems. Duct clampsthe joint between the inline fan and the adjacent filter or duct silencer. The vibration of the fan amplifies even more at this kind of joints to overcome the issue use a clamp as a joint media in between the fan and filter silencers. Two silencers can be used together in installations where noise reduction is critical.

An axial fan silencer is available to fit any fan size with construction materials suitable towards a system type a fan size and a higher velocity of a fan type. Exhaust silencers have mounting flanges to suit standard fan bolt patterns for easy installation. Change to an inline fan running parallel to the roof and place a rectangular silencer on the outdoor side. Blade passing frequency is often the defining noise characteristic when designing an exhaust silencer.

Noise levels can be high and contain low frequency content. Discharge silencers for industrial fans are often required to accommodate very high volumetric flow rates cfm at high temperatures and velocities. Direct the duct opening away from noise sensitive areas. Replace windband of fan with silencer.

An excellent way to reduce the amount of noise is to use a fan speed controller. Installation dos and donts 3 dr ref qxd 6 11 2015 3 58 pm page 18.

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