9
The floor between the installation room and living areas must
have carefully applied anti-vibration separation. Ensure that no
pipes are routed on or in the wall and that the air ducts have
anti-vibration separation.
If the unit installation room is included in the building ventilation
system, the design must include an extract air vent and supply
air vent for this room. To avoid the need for an overflow aperture
in the door, the supply air and extract air flow rates must be
balanced.
Note
The unit can seem loud if operated in an unfinished
building without doors. This is because the fixtures and
fittings which will provide sound attenuation are not yet
in place; once the building is occupied this should no
longer occur.
Sound attenuation measures 45 dB(A)
A sound-absorbing coefficient of 45dB(A) can be achieved using,
for example, a wall of lightweight, timber frame construction with
full insulation. The cross-section of the timber supports should be
60x60mm. The wall must have plasterboard panelling on both
sides, with a thickness of 12.5mm on one side and 10mm on the
opposite side.
2
1
3
3
2
D0000047127
1 Timber frame supports 60 x 60mm
2 Gypsum fibre board 12.5 mm
3 Gypsum fibre board 10 mm
Sound attenuation measures 55 dB(A)
A sound-absorbing coefficient of 55dB(A) can be achieved using,
for example, a twin wall of lightweight, timber frame construction
with full insulation and 30mm parting line. The cross-section of
the timber supports should be 60x60mm. The wall must have
12.5mm plasterboard panelling on both sides.
3
1
3
3
3
2
D0000047126
1 Parting line 30mm
2 Timber frame supports 60 x 60mm
3 Gypsum fibre board 12.5 mm
Anti-vibration separation
With the anti-vibration feet, it is possible to install the appliance
on floating screed, as long as this has been applied correctly. If
necessary provide separation.
If the appliance is positioned on a wooden beam ceiling, you must
take special steps to prevent structure-borne noise transmission.
Installation on foundations
3
42
1
26_04_01_0290
1 Concrete base
2 Impact sound insulation
3 Floating screed
4 Screed recess
The separation can also be made later, by cutting the screed all
the way around the appliance.
Installation on screed with impact sound insulation
2
3
1
4
26_04_01_0291
1 Concrete base
2 Impact sound insulation
3 Floating screed
4 Screed recess
Protect all pipe fixings and wall transitions with anti-vibra-
tion insulation.