5.4 Noise information
5.4.1 Consideration to prevent noise
To prevent disturbing noise from the heat pump the following recommendations should be observed:
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In the event the heat pump is positioned on a vibration sensitive base, vibration dampers should be used. The vibration dampers
must be correctly dimensioned with regard to the heat pump's weight so that static spring depression of at least 2 mm is obtained
in all mounting components.
▪
Connection of the heat transfer fluid to the heat pump must be made using a flexible hose to prevent transmission of vibration to
building construction and the pipe system, see Flexible hoses.
▪
Do NOT install expansion vessel on the connection for the bleed valve.
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Ensure that pipes at lead-ins are not lying against the walls.
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Ensure that the electrical supply cable does not provide a path for vibration because it is overstretched.
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In cases where attachment of pipes to sensitive construction elements cannot be avoided, special elastic pipe attachments should
be used.
Avoid locating the outdoor unit:
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Close to windows, air vent ducts or walls to bedrooms etc.
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Facing nearby neighbours.
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In an inner corner of the building. It gives a very large effect on the direction of sound propagation.
5.4.2
Flexible hoses
All pipes should be routed in such a way that vibrations cannot be transmitted from the heat pump through the piping and out into the
building. This also applies to the expansion pipe. We recommend that diffusion tight flexible hoses are used for all pipe connections to
avoid the transmission of vibrations. Flexible hoses are available to purchase as accessories. The figures below show how appropriate
and inappropriate installations look using this type of hose.
Installation Guide
Athena
AWAT01IGCG0102 Thermia AB
24
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