9 | Electrical installation
Installer reference guide
75
EPGA11~16DAV3(7) + EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556075-1A – 2021.09
9 Electrical installation
In this chapter
9.1 About connecting the electrical wiring .................................................................................................................................. 75
9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 75
9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 76
9.1.3 About electrical compliance .................................................................................................................................. 77
9.1.4 About preferential kWh rate power supply........................................................................................................... 77
9.1.5 Overview of electrical connections except external actuators............................................................................. 78
9.2 Connections to the indoor unit .............................................................................................................................................. 78
9.2.1 To connect the main power supply ....................................................................................................................... 78
9.2.2 To connect the backup heater power supply........................................................................................................ 80
9.2.3 To connect the shut-off valve ................................................................................................................................ 82
9.2.4 To connect the electricity meters.......................................................................................................................... 82
9.2.5 To connect the domestic hot water pump............................................................................................................ 83
9.2.6 To connect the alarm output ................................................................................................................................. 83
9.2.7 To connect the space cooling/heating ON/OFF output ........................................................................................ 83
9.2.8 To connect the changeover to external heat source ............................................................................................ 84
9.2.9 To connect the power consumption digital inputs ............................................................................................... 84
9.2.10 To connect the safety thermostat (normally closed contact)............................................................................... 85
9.2.11 To connect a Smart Grid ........................................................................................................................................ 86
9.3 After connecting the electrical wiring to the indoor unit...................................................................................................... 86
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:
1 Making sure the power supply system complies with the electrical
specifications of the heat pump.
2 Connecting the electrical wiring to the outdoor unit.
3 Connecting the electrical wiring to the indoor unit.
4 Connecting the main power supply.
5 Connecting the backup heater power supply.
6 Connecting the shut-off valves.
7 Connecting the electrical meters.
8 Connecting the domestic hot water pump.
9 Connecting the alarm output.
10 Connecting the space heating ON/OFF output.
11 Connecting the changeover to an external heat source.
12 Connecting the power consumption digital inputs.
13 Connecting the safety thermostat.
9.1.1 Precautions when connecting the electrical wiring
INFORMATION
Also read the precautions and requirements in the following chapters:
▪ General safety precautions
▪ Preparation
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