Daikin Altherma ERGA04E V3 Series - 9 Electrical Installation; About Connecting the Electrical Wiring

9 | Electrical installation
Installer reference guide
111
ERGA04~08E + EHVH04+08SU18+23E
Daikin Altherma 3 R F
4P629090-1C – 2022.08
9 Electrical installation
INFORMATION
This unit is a heating only model. Therefore, all references to cooling in this
document are NOT applicable.
WARNING
Make sure that the electrical wiring does NOT touch the refrigerant gas pipe, which
can be very hot.
a
a Refrigerant gas pipe
In this chapter
9.1 About connecting the electrical wiring .................................................................................................................................. 111
9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 112
9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 112
9.1.3 Specifications of standard wiring components ..................................................................................................... 114
9.1.4 About electrical compliance .................................................................................................................................. 114
9.1.5 About preferential kWh rate power supply........................................................................................................... 114
9.1.6 Overview of electrical connections except external actuators............................................................................. 115
9.2 Connections to the outdoor unit............................................................................................................................................ 115
9.2.1 To connect the electrical wiring to the outdoor unit ............................................................................................ 115
9.3 Connections to the indoor unit .............................................................................................................................................. 117
9.3.1 To connect the main power supply ....................................................................................................................... 120
9.3.2 To connect the backup heater power supply........................................................................................................ 122
9.3.3 To connect the shut-off valve ................................................................................................................................ 124
9.3.4 To connect the electricity meters.......................................................................................................................... 125
9.3.5 To connect the domestic hot water pump............................................................................................................ 126
9.3.6 To connect the alarm output................................................................................................................................. 127
9.3.7 To connect the space cooling/heating ON/OFF output ........................................................................................ 128
9.3.8 To connect the changeover to external heat source ............................................................................................ 129
9.3.9 To connect the power consumption digital inputs ............................................................................................... 130
9.3.10 To connect the safety thermostat (normally closed contact)............................................................................... 131
9.3.11 To connect a Smart Grid ........................................................................................................................................ 132
9.3.12 To connect the WLAN cartridge (delivered as accessory)..................................................................................... 136
9.4 After connecting the electrical wiring to the indoor unit...................................................................................................... 136
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
Typical workflow
Connecting the electrical wiring typically consists of the following stages:
▪ "9.2Connections to the outdoor unit"[4115]
▪ "9.3Connections to the indoor unit"[4117]