5 Electrical Installation
5.1 Installation
The control centre contains the necessary components for voltage supply, control systems and operation.
Caution The control centre must be installed in a frost-free environment.
5.1 Cable connection
Laying electrical wiring can also cause noise so this installation must be carried out appropriately. An appro-
priate installation is where there is approximately 300 mm free cable between the heat pump and the build-
ing. It is inappropriate to bolt trunking between the heat pump and the wall. This is because vibrations can
then be transmitted from the heat pump through the trunking to the walls of the house.
UV resistant cable must be used for outdoor power cables. Cable choice must follow applicable local and national regulations.
UV resistant, twinned pair date/telephone cable must be used for outdoor communication cables. The cable must be screened with the
one end of the screening (it does not matter which end) earthed in a ground block.
The cable section area must be a minimum of 0.25 mm
2
.
When the power cable is connected to the terminal block a screwdriver is used to open the terminal block.
Fig. 1: Connecting power cable to terminal block.
1. Insert the screwdriver.
2. Straighten the screwdriver.
3. Push the screwdriver down to release the cable lock.
4. Insert the cable and hold it in place.
5. Pull the screwdriver out.
6. Check that the cable is secured by carefully pulling on the ca-
ble.
Planning guide Atec
VIIFB102 Thermia Värmepumpar
16
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