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9 Electrical installation
In this chapter
9.1 About connecting the electrical wiring
ERRA08~12E + ELVH/X12S18+23E
Daikin Altherma 3 R MT F
4P708474-1 - 2023.05
WARNING
Make sure that the electrical wiring does NOT touch the refrigerant gas pipe, which
can be very hot.
a
a Refrigerant gas pipe
9.1
About connecting the electrical wiring .................................................................................................................................. 121
9.1.1
Precautions when connecting the electrical wiring .............................................................................................. 122
9.1.2
Guidelines when connecting the electrical wiring ................................................................................................ 123
9.1.3
About electrical compliance .................................................................................................................................. 124
9.1.4
About preferential kWh rate power supply........................................................................................................... 124
9.1.5
Overview of electrical connections except external actuators............................................................................. 125
9.2
Connections to the outdoor unit............................................................................................................................................ 126
9.2.1
Specifications of standard wiring components ..................................................................................................... 126
9.2.2
To connect the electrical wiring to the outdoor unit ............................................................................................ 127
9.2.3
To reposition the air thermistor on the outdoor unit ........................................................................................... 131
9.3
Connections to the indoor unit .............................................................................................................................................. 132
9.3.1
To connect the main power supply ....................................................................................................................... 135
9.3.2
To connect the backup heater power supply........................................................................................................ 137
9.3.3
To connect the shut-off valve ................................................................................................................................ 140
9.3.4
To connect the electricity meters.......................................................................................................................... 141
9.3.5
To connect the domestic hot water pump............................................................................................................ 142
9.3.6
To connect the alarm output ................................................................................................................................. 143
9.3.7
To connect the space cooling/heating ON/OFF output ........................................................................................ 144
9.3.8
To connect the changeover to external heat source ............................................................................................ 145
9.3.9
To connect the power consumption digital inputs ............................................................................................... 146
9.3.10
To connect the safety thermostat (normally closed contact)............................................................................... 147
9.3.11
To connect a Smart Grid ........................................................................................................................................ 148
9.3.12
To connect the WLAN cartridge (delivered as accessory)..................................................................................... 152
9.4
After connecting the electrical wiring to the indoor unit...................................................................................................... 152
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
▪
"9.3 Connections to the indoor
9
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4
unit" [
126]
4
unit" [
132]
Electrical installation
Installer reference guide
121
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