About connecting the electrical wiring ..................................................................................................................................

9.1.1

Precautions when connecting the electrical wiring ..............................................................................................

9.1.2

Guidelines when connecting the electrical wiring ................................................................................................

9.1.3

About electrical compliance ..................................................................................................................................

9.1.4

About preferential kWh rate power supply...........................................................................................................

9.1.5

Overview of electrical connections except external actuators.............................................................................

9.2

Connections to the outdoor unit............................................................................................................................................

9.2.1

To connect the electrical wiring to the outdoor unit ............................................................................................

9.3

Connections to the indoor unit ..............................................................................................................................................

9.3.1

To connect the main power supply .......................................................................................................................

9.3.2

To connect the backup heater power supply........................................................................................................

9.3.3

To connect the shut-off valve ................................................................................................................................

9.3.4

To connect the electricity meters..........................................................................................................................

9.3.5

To connect the domestic hot water pump............................................................................................................

9.3.6

To connect the alarm output .................................................................................................................................

9.3.7

To connect the space cooling/heating ON/OFF output ........................................................................................

9.3.8

To connect the changeover to external heat source ............................................................................................

9.3.9

To connect the power consumption digital inputs ...............................................................................................

9.3.10

To connect the safety thermostat (normally closed contact)...............................................................................

9.3.11

To connect a Smart Grid ........................................................................................................................................

9.4

After connecting the electrical wiring to the indoor unit...................................................................................................... 100

Before connecting the electrical wiring

Make sure the water piping is connected.

Typical workflow

Connecting the electrical wiring typically consists of the following stages:

Making sure the power supply system complies with the electrical

specifications of the heat pump.

Connecting the electrical wiring to the outdoor unit.

Connecting the electrical wiring to the indoor unit.

Connecting the main power supply.

Connecting the backup heater power supply.

Connecting the shut-off valves.

Connecting the electrical meters.