Multi-DENCO Installation
FläktGroup DC-2013-0101-GB • Subject to modifications • R5-08/2020 37
5.1.2 Noise consideration at installation site
It is important noise has been considered before the installation. Options are available
to equip your Multi-DENCO unit with sound reduction features. Noise is usually a high
consideration of DENCO-OfficeCool installations therefore. Ask your local sales repre-
sentative for details.
When planning or installing units, consider:
– The acoustic properties of the room – soft furnishings, curtains and carpets tend to
reduce sound reflections. Bare walls and vertical surfaces increase sound reflec-
tions resulting in higher noise levels.
– Equipment placed alongside a solid wall can transmit noise through and along the
wall into adjacent areas.
– Floors with high deflections, can amplify noise produced by the unit.
The following suggestions may help minimise noise issues, depending on site condi-
tions:
– Ensure that any vertical panels directly in front of the unit are acoustically insulated.
– Where units are situated in equipment rooms/cupboards, acoustic treatment and
ceiling reduces room noise levels.
– Acoustic pads may be placed behind equipment to reduce wall transmissions.
– Panels and cables in the air flow can cause vibrations and produce noise. Rigidly
support these components to a solid structure to reduce this effect.
– Positioning close control air handling units on building columns or supporting ele-
ments of the building to try to minimise noise transmission on the building. Steel floor
framing for unit equipment may be used for this purpose.
– Acoustic rubber pads for vibration insulation may be used beneath the equipment.
– Abrupt bends in pipework should be avoided by fitting long turn elbows or forming
long radius bends.
– Where pipes pass through walls or partitions, an oversize sleeve to be packed with
suitable insulation material is recommended.
– Insulate and rigidly support interconnecting pipework to the building structure.
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