7 Carrying out electrical installations
Electrical installations may only be carried out by a qualified electrician.
The heat pump is connected to a 400 V (50 Hz) electricity network. Both the standard equipment supplied with the heat pump and any electrical accessories must be installed and connected when installing the device. The following standard electrical equipment is supplied with the heat pump:
- Outdoor temperature sensor (B9)
- Upper and lower sensor of the domestic water accumulator (B2, B3)
- Cascade sensor (B10)
- Additional heat control sensor (B11)
See the electrical diagrams for complete connection details for each heat pump model.
When carrying out electrical installations, take the following points into account:
- Disconnect the heat pump before the conducting the insulation resistance test on the building.
- Make sure that the heat pump fuse is of type C (slow).
- Route the cabling of electrical accessories through the control unit lead-throughs at the back of the device.
- Do not install sensor or data transmission cables near power cables.
- The order of wires is not important when connecting temperature sensors.