Daikin Altherma 3 HT - Electrical Installation; Connecting Electrical Wiring Precautions

9 | Electrical installation
Installer reference guide
97
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
9 Electrical installation
In this chapter
9.1 About connecting the electrical wiring .................................................................................................................................. 97
9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 97
9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 98
9.1.3 About electrical compliance .................................................................................................................................. 99
9.1.4 About preferential kWh rate power supply........................................................................................................... 100
9.1.5 Overview of electrical connections except external actuators............................................................................. 101
9.2 Connections to the outdoor unit............................................................................................................................................ 101
9.2.1 To connect the electrical wiring to the outdoor unit ............................................................................................ 102
9.2.2 To reposition the air thermistor on the outdoor unit ........................................................................................... 108
9.3 Connections to the indoor unit .............................................................................................................................................. 109
9.3.1 To connect the main power supply ....................................................................................................................... 112
9.3.2 To connect the backup heater power supply........................................................................................................ 114
9.3.3 To connect the shut-off valve ................................................................................................................................ 117
9.3.4 To connect the electricity meters.......................................................................................................................... 118
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 water piping is connected.
Typical workflow
Connecting the electrical wiring typically consists of the following stages:
▪ "9.2Connections to the outdoor unit"[4101]
▪ "9.3Connections to the indoor unit"[4109]
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.