About connecting the electrical wiring .................................................................................................................................. 102

9.1.1

Precautions when connecting the electrical wiring .............................................................................................. 102

9.1.2

Guidelines when connecting the electrical wiring ................................................................................................ 103

9.1.3

About electrical compliance .................................................................................................................................. 104

9.1.4

About preferential kWh rate power supply........................................................................................................... 105

9.1.5

Overview of electrical connections except external actuators............................................................................. 105

9.2

Connections to the outdoor unit............................................................................................................................................ 106

9.2.1

To connect the electrical wiring to the outdoor unit ............................................................................................ 107

9.2.2

To reposition the air thermistor on the outdoor unit ........................................................................................... 113

9.3

Connections to the indoor unit .............................................................................................................................................. 114

9.3.1

To connect the electrical wiring to the indoor unit............................................................................................... 116

9.3.2

To connect the main power supply ....................................................................................................................... 118

9.3.3

To connect the backup heater power supply........................................................................................................ 120

9.3.4

To connect the backup heater to the main unit.................................................................................................... 123

9.3.5

To connect the shut-off valve ................................................................................................................................ 124

9.3.6

To connect the electricity meters.......................................................................................................................... 125

9.3.7

To connect the domestic hot water pump............................................................................................................ 126

9.3.8

To connect the alarm output ................................................................................................................................. 127

9.3.9

To connect the space cooling/heating ON/OFF output ........................................................................................ 128

9.3.10

To connect the changeover to external heat source ............................................................................................ 129

9.3.11

To connect the power consumption digital inputs ............................................................................................... 130

9.3.12

To connect the safety thermostat (normally closed contact)............................................................................... 132

9.3.13

To connect a Smart Grid ........................................................................................................................................ 133

9.3.14

To connect the WLAN cartridge (delivered as accessory)..................................................................................... 138

9.3.15

To connect the solar input ..................................................................................................................................... 139

9.3.16

To connect the DHW output.................................................................................................................................. 139

Before connecting the electrical wiring

Make sure the water piping is connected.

Typical workflow

Connecting the electrical wiring typically consists of the following stages:

▪

"9.2 Connections to the outdoor

▪

"9.3 Connections to the indoor

DANGER: RISK OF ELECTROCUTION

WARNING

ALWAYS use multicore cable for power supply cables.

INFORMATION