Fans by Fantech Electronic Catalogue

2016

Isolated

Wall

Figure 4.8. - Isolated walls

Isolated

Wall

Flexible or

resilient seal

Don’t bridge the isolated wall to the non-isolated wall with the

silencer fixings.

Do fix the silencer to one wall only, and place a flexible or

resilient seal on the isolated wall.

4.0 NOISE CONTROL (Cont.)

Figure 4.7. - Acoustic sealing of silencers to achieve very low noise levels

Don’t: When trying to achieve very high attenuation or very low

noise levels (eg. NR20) do not use an inadequate seal between

the silencer and wall opening.

Do: Place a concrete sleeve around the silencer to increase the

acoustic seal between rooms.

For less stringent requirements, pack around the silencer with a

resilient material to affect a complete seal between the

attenuator and the opening.

INSTALLATION DO’S AND DON’TS

P-14