Connecting Supply And Return Lines; Noise And Vibrations - Danfoss DHP-AT Installation Manual

Installation Guide
6.3

Connecting supply and return lines

1. Connect the supply pipe (red label) with a flexible hose connection and with all other necessary components.
2. Connect the return pipe (blue label) with a flexible hose connection and with all the necessary components including a filter.
3. Insulate the supply and return lines all the way to the heat pump.
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2
6.4

Noise and vibrations

Installation of the heat pump
To prevent disturbing noise from the heat pump, the following recommendations should be observed:
▪ 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 regards to the heat pump's weight so that static spring depression of at least 2 mm is obtained
in all mounting components. Vibration dampers are available to purchase as accessories.
▪ The 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.
▪ Ensure that pipes at lead-ins are not lying against the walls.
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 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:
Danfoss Heating Solutions
DHP-AT
1 Supply line pipe (red)
2 Return line pipe (blue)
Do not twist the flexible hoses as the are installed.
At threaded connections, use a counterhold spanner
Cut the hose to the correct length to avoid excess bowing-out or stretching at
bends
VMGFI302
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