Daikin Altherma EHYHBH05A Series - Electrical Installation; About Connecting the Electrical Wiring

9 | Electrical installation
Installer reference guide
110
EVLQ05+08CA + EHYHBH05A + EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
9 Electrical installation
In this chapter
9.1 About connecting the electrical wiring .................................................................................................................................. 110
9.1.1 Precautions when connecting the electrical wiring .............................................................................................. 111
9.1.2 Guidelines when connecting the electrical wiring ................................................................................................ 111
9.1.3 Overview of electrical connections except external actuators............................................................................. 113
9.1.4 Overview of electrical connections for external and internal actuators .............................................................. 114
9.1.5 About preferential kWh rate power supply........................................................................................................... 115
9.2 Connections to the outdoor unit............................................................................................................................................ 116
9.2.1 To connect the electrical wiring to the outdoor unit ............................................................................................ 116
9.3 Connections to the indoor unit .............................................................................................................................................. 117
9.3.1 To connect the electrical wiring to the indoor unit............................................................................................... 117
9.3.2 To connect the main power supply of the indoor unit ......................................................................................... 118
9.3.3 To connect the main power supply of the gas boiler............................................................................................ 120
9.3.4 To connect the communication cable between gas boiler and indoor unit......................................................... 120
9.3.5 To connect the user interface................................................................................................................................ 122
9.3.6 To connect the shut-off valve ................................................................................................................................ 124
9.3.7 To connect the electrical meter............................................................................................................................. 125
9.3.8 To connect the gas meter ...................................................................................................................................... 125
9.3.9 To connect the domestic hot water pump............................................................................................................ 125
9.3.10 To connect the alarm output ................................................................................................................................. 126
9.3.11 To connect the space cooling/heating ON/OFF output ........................................................................................ 126
9.3.12 To connect the power consumption digital inputs ............................................................................................... 127
9.3.13 To connect the safety thermostat (normally closed contact)............................................................................... 127
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:
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 of the indoor unit.
5 Connecting the main power supply of the gas boiler.
6 Connecting the communication cable between the gas boiler and the indoor
unit.
7 Connecting the user interface.
8 Connecting the shut–off valves.
9 Connecting the electrical meters.
10 Connecting the gas meter.
11 Connecting the domestic hot water pump.
12 Connecting the alarm output.
13 Connecting the space cooling/heating ON/OFF output.
14 Connecting the power consumption digital inputs.
15 Connecting the safety thermostat.