Table of contents
Installer reference guide
3
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
7.2.3 To remove the transportation stay................................................................................................................ 67
7.2.4 To attach the compressor cover piece .......................................................................................................... 68
7.2.5 To close the outdoor unit............................................................................................................................... 69
7.2.6 To open the indoor unit ................................................................................................................................. 69
7.2.7 To lower the switch box on the indoor unit .................................................................................................. 71
7.2.8 To close the indoor unit ................................................................................................................................. 72
7.3 Mounting the outdoor unit............................................................................................................................................. 72
7.3.1 About mounting the outdoor unit ................................................................................................................. 72
7.3.2 Precautions when mounting the outdoor unit.............................................................................................. 73
7.3.3 To provide the installation structure ............................................................................................................. 73
7.3.4 To install the outdoor unit ............................................................................................................................. 74
7.3.5 To provide drainage........................................................................................................................................ 75
7.3.6 To install the discharge grille.......................................................................................................................... 76
7.3.7 To remove the discharge grille, and put the grille in safety position............................................................ 78
7.4 Mounting the indoor unit ............................................................................................................................................... 80
7.4.1 About mounting the indoor unit.................................................................................................................... 80
7.4.2 Precautions when mounting the indoor unit................................................................................................. 80
7.4.3 To install the indoor unit ................................................................................................................................ 80
7.4.4 To connect the drain hose to the drain ......................................................................................................... 81
8 Piping installation 82
8.1 Preparing water piping ................................................................................................................................................... 82
8.1.1 Water circuit requirements............................................................................................................................ 82
8.1.2 Formula to calculate the expansion vessel pre-pressure .............................................................................. 85
8.1.3 To check the water volume and flow rate ..................................................................................................... 85
8.1.4 Changing the pre-pressure of the expansion vessel...................................................................................... 87
8.1.5 To check the water volume: Examples .......................................................................................................... 88
8.2 Connecting water piping................................................................................................................................................. 88
8.2.1 About connecting the water piping ............................................................................................................... 88
8.2.2 Precautions when connecting the water piping............................................................................................ 89
8.2.3 To connect the water piping .......................................................................................................................... 89
8.2.4 To connect the recirculation piping ............................................................................................................... 91
8.2.5 To fill the water circuit ................................................................................................................................... 92
8.2.6 To protect the water circuit against freezing ................................................................................................ 92
8.2.7 To fill the domestic hot water tank................................................................................................................ 95
8.2.8 To insulate the water piping .......................................................................................................................... 96
9 Electrical installation 97
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
10 Configuration 131
10.1 Overview: Configuration................................................................................................................................................. 131
10.1.1 To access the most used commands ............................................................................................................. 132
10.1.2 To connect the PC cable to the switch box.................................................................................................... 134
10.2 Configuration wizard....................................................................................................................................................... 134
10.3 Possible screens.............................................................................................................................................................. 136
10.3.1 Possible screens: Overview ............................................................................................................................ 136
10.3.2 Home screen................................................................................................................................................... 137
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