Connection for air extraction
Silencer
(optional accessory)
To achieve even further reductions in noise levels, a special silencer can be fitted in the ducting system.
...with air extraction:
The silencer not only reduces noise from the fan, but also sounds from outside (e.g. traffic noise).
For this reason the silencer must be positioned as close as possible to where the ducting leaves the building .
...in recirculation mode:
The silencer needs to be positioned between the fan and the exhaust grille . The space needs to be checked in some cases.
...air extraction with external fan:
To minimise noise from the fan in the kitchen, the silencer should be positioned in front of the external fan if possible, or if the ducting is long, then in the ducting inside the cooker hood itself .
In the case of an external fan placed inside the house, fitting a silencer behind the external fan reduces the noise of the fan outside the house.
In all modes of operation, the most effective noise reductions are achieved if two silencers are fitted in the system.
35
