About connecting the electrical wiring .................................................................................................................................. 103

9.1.1

Precautions when connecting the electrical wiring .............................................................................................. 104

9.1.2

Guidelines when connecting the electrical wiring ................................................................................................ 105

9.1.3

Specifications of standard wiring components ..................................................................................................... 106

9.1.4

About electrical compliance .................................................................................................................................. 106

9.1.5

About preferential kWh rate power supply........................................................................................................... 107

9.1.6

Overview of electrical connections except external actuators............................................................................. 107

9.2

Connections to the outdoor unit............................................................................................................................................ 108

9.2.1

To connect the electrical wiring to the outdoor unit ............................................................................................ 108

9.3

Connections to the indoor unit .............................................................................................................................................. 110

9.3.1

To connect the main power supply ....................................................................................................................... 114

9.3.2

To connect the backup heater power supply........................................................................................................ 116

9.3.3

To connect the shut-off valve ................................................................................................................................ 118

9.3.4

To connect the electricity meters.......................................................................................................................... 119

9.3.5

To connect the domestic hot water pump............................................................................................................ 119

9.3.6

To connect the alarm output ................................................................................................................................. 120

9.3.7

To connect the space cooling/heating ON/OFF output ........................................................................................ 121

9.3.8

To connect the changeover to external heat source ............................................................................................ 122

9.3.9

To connect the power consumption digital inputs ............................................................................................... 123

9.3.10

To connect the safety thermostat (normally closed contact)............................................................................... 124

9.3.11

To connect a Smart Grid ........................................................................................................................................ 125

9.3.12

To connect the WLAN cartridge (delivered as accessory)..................................................................................... 129

9.4

After connecting the electrical wiring to the indoor unit...................................................................................................... 129

Before connecting the electrical wiring

Make sure:

▪

The refrigerant piping is connected and checked

▪

The water piping is connected

Electrical installation

Installer reference guide

103

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