9 | Electrical installation
Installer reference guide
103
ERGA04~08EAV3(A) + EHVH04+08SU18+23EA6V
Daikin Altherma 3 R F
4P629090-1 – 2020.08
9 Electrical installation
WARNING
Make sure that the electrical wiring does NOT touch the refrigerant gas pipe, which
can be very hot.
a Refrigerant gas pipe
In this chapter
9.1 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
9.1 About connecting the electrical wiring
Before connecting the electrical wiring
Make sure:
▪ The refrigerant piping is connected and checked
▪ The water piping is connected
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