Table of Contents
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9 Electrical installation
In this chapter
9.1 About connecting the electrical wiring
9.1.1 Precautions when connecting the electrical wiring
EPRA14~18D + ETBH/X16E
Daikin Altherma 3 H HT W
4P644736-1D - 2023.10
9.1
About connecting the electrical wiring .................................................................................................................................. 101
9.1.1
Precautions when connecting the electrical wiring .............................................................................................. 101
9.1.2
Guidelines when connecting the electrical wiring ................................................................................................ 102
9.1.3
About electrical compliance .................................................................................................................................. 104
9.1.4
About preferential kWh rate power supply........................................................................................................... 104
9.1.5
Overview of electrical connections except external actuators............................................................................. 105
9.2
Connections to the outdoor unit............................................................................................................................................ 106
9.2.1
Specifications of standard wiring components ..................................................................................................... 106
9.2.2
To connect the electrical wiring to the outdoor unit ............................................................................................ 106
9.2.3
To reposition the air thermistor on the outdoor unit ........................................................................................... 113
9.3
Connections to the indoor unit .............................................................................................................................................. 114
9.3.1
To connect the main power supply ....................................................................................................................... 118
9.3.2
To connect the backup heater power supply........................................................................................................ 120
9.3.3
To connect the shut-off valve ................................................................................................................................ 122
9.3.4
To connect the electricity meters.......................................................................................................................... 123
9.3.5
To connect the domestic hot water pump............................................................................................................ 124
9.3.6
To connect the alarm output ................................................................................................................................. 125
9.3.7
To connect the space cooling/heating ON/OFF output ........................................................................................ 126
9.3.8
To connect the changeover to external heat source ............................................................................................ 127
9.3.9
To connect the power consumption digital inputs ............................................................................................... 128
9.3.10
To connect the safety thermostat (normally closed contact)............................................................................... 129
9.3.11
To connect a Smart Grid ........................................................................................................................................ 130
9.3.12
To connect the WLAN cartridge (delivered as accessory)..................................................................................... 134
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
▪
"9.3 Connections to the indoor
DANGER: RISK OF ELECTROCUTION
WARNING
▪
All wiring MUST be performed by an authorised electrician and MUST comply
with the applicable national wiring regulation.
▪
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.
9
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Electrical installation
Installer reference guide
101
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