Daikin Altherma 3 R W - Electrical Installation; About Connecting the Electrical Wiring; Precautions When Connecting the Electrical Wiring

9 | Electrical installation
Installer reference guide
116
ERLA11~16D + EBBH/X11+16D
Daikin Altherma 3 R W
4P643603-1B – 2022.05
9 Electrical installation
In this chapter
9.1 About connecting the electrical wiring .................................................................................................................................. 116
9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 116
9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 117
9.1.3 About electrical compliance .................................................................................................................................. 118
9.1.4 About preferential kWh rate power supply........................................................................................................... 119
9.1.5 Overview of electrical connections except external actuators............................................................................. 120
9.2 Connections to the outdoor unit............................................................................................................................................ 120
9.2.1 Specifications of standard wiring components ..................................................................................................... 121
9.2.2 To connect the electrical wiring to the outdoor unit ............................................................................................ 121
9.3 Connections to the indoor unit .............................................................................................................................................. 123
9.3.1 To connect the main power supply ....................................................................................................................... 127
9.3.2 To connect the backup heater power supply........................................................................................................ 129
9.3.3 To connect the shut-off valve ................................................................................................................................ 132
9.3.4 To connect the electricity meters.......................................................................................................................... 133
9.3.5 To connect the domestic hot water pump............................................................................................................ 134
9.3.6 To connect the alarm output................................................................................................................................. 135
9.3.7 To connect the space cooling/heating ON/OFF output ........................................................................................ 136
9.3.8 To connect the changeover to external heat source ............................................................................................ 137
9.3.9 To connect the power consumption digital inputs ............................................................................................... 138
9.3.10 To connect the safety thermostat (normally closed contact)............................................................................... 139
9.3.11 To connect a Smart Grid ........................................................................................................................................ 140
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120]
▪ "9.3Connections to the indoor unit"[4123]
9.1.1 Precautions when connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised electrician and MUST comply
with the applicable legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical construction MUST comply
with the applicable legislation.
WARNING
ALWAYS use multicore cable for power supply cables.