Table of contents
Installer reference guide
3
ERGA04~08EAV3(A) + EHVZ04+08S18+23EA6V+9W
Daikin Altherma 3 R F
4P629093-1 – 2020.08
7.2.2 To open the outdoor unit............................................................................................................................... 51
7.2.3 To close the outdoor unit............................................................................................................................... 51
7.2.4 To open the indoor unit ................................................................................................................................. 51
7.2.5 To lower the switch box on the indoor unit .................................................................................................. 53
7.2.6 To close the indoor unit ................................................................................................................................. 54
7.3 Mounting the outdoor unit............................................................................................................................................. 54
7.3.1 About mounting the outdoor unit ................................................................................................................. 54
7.3.2 Precautions when mounting the outdoor unit.............................................................................................. 55
7.3.3 To provide the installation structure ............................................................................................................. 55
7.3.4 To install the outdoor unit ............................................................................................................................. 58
7.3.5 To provide drainage........................................................................................................................................ 59
7.3.6 To prevent the outdoor unit from falling over .............................................................................................. 60
7.4 Mounting the indoor unit ............................................................................................................................................... 61
7.4.1 About mounting the indoor unit.................................................................................................................... 61
7.4.2 Precautions when mounting the indoor unit................................................................................................. 61
7.4.3 To install the indoor unit ................................................................................................................................ 61
7.4.4 To connect the drain hose to the drain ......................................................................................................... 62
8 Piping installation 64
8.1 Preparing refrigerant piping ........................................................................................................................................... 64
8.1.1 Refrigerant piping requirements.................................................................................................................... 64
8.1.2 Refrigerant piping insulation.......................................................................................................................... 65
8.2 Preparing water piping ................................................................................................................................................... 65
8.2.1 Water circuit requirements............................................................................................................................ 65
8.2.2 Formula to calculate the expansion vessel pre-pressure.............................................................................. 68
8.2.3 To check the water volume and flow rate ..................................................................................................... 68
8.2.4 Changing the pre-pressure of the expansion vessel...................................................................................... 70
8.2.5 To check the water volume: Examples .......................................................................................................... 71
8.3 Connecting the refrigerant piping .................................................................................................................................. 72
8.3.1 About connecting the refrigerant piping ....................................................................................................... 72
8.3.2 Precautions when connecting the refrigerant piping.................................................................................... 72
8.3.3 Guidelines when connecting the refrigerant piping...................................................................................... 73
8.3.4 Pipe bending guidelines ................................................................................................................................. 74
8.3.5 To flare the pipe end ...................................................................................................................................... 74
8.3.6 To braze the pipe end..................................................................................................................................... 75
8.3.7 Using the stop valve and service port............................................................................................................ 75
8.3.8 To connect the refrigerant piping to the outdoor unit ................................................................................. 77
8.3.9 To connect the refrigerant piping to the indoor unit .................................................................................... 77
8.4 Checking the refrigerant piping...................................................................................................................................... 78
8.4.1 About checking the refrigerant piping........................................................................................................... 78
8.4.2 Precautions when checking the refrigerant piping........................................................................................ 78
8.4.3 To check for leaks ........................................................................................................................................... 79
8.4.4 To perform vacuum drying............................................................................................................................. 79
8.4.5 To insulate the refrigerant piping .................................................................................................................. 80
8.5 Charging refrigerant........................................................................................................................................................ 81
8.5.1 About charging refrigerant............................................................................................................................. 81
8.5.2 Precautions when charging refrigerant ......................................................................................................... 82
8.5.3 To determine the additional refrigerant amount.......................................................................................... 82
8.5.4 To determine the complete recharge amount.............................................................................................. 82
8.5.5 To charge additional refrigerant .................................................................................................................... 82
8.5.6 To fix the fluorinated greenhouse gases label............................................................................................... 83
8.6 Connecting water piping................................................................................................................................................. 83
8.6.1 About connecting the water piping ............................................................................................................... 83
8.6.2 Precautions when connecting the water piping............................................................................................ 84
8.6.3 To connect the water piping .......................................................................................................................... 84
8.6.4 To connect the recirculation piping ............................................................................................................... 86
8.6.5 To fill the water circuit ................................................................................................................................... 86
8.6.6 To fill the domestic hot water tank................................................................................................................ 86
8.6.7 To insulate the water piping .......................................................................................................................... 87
9 Electrical installation 88
9.1 About connecting the electrical wiring .......................................................................................................................... 88
9.1.1 Precautions when connecting the electrical wiring....................................................................................... 89
9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 90
9.1.3 Specifications of standard wiring components.............................................................................................. 91
9.1.4 About electrical compliance........................................................................................................................... 91
9.1.5 About preferential kWh rate power supply................................................................................................... 92
9.1.6 Overview of electrical connections except external actuators ..................................................................... 92
9.2 Connections to the outdoor unit.................................................................................................................................... 93
9.2.1 To connect the electrical wiring to the outdoor unit .................................................................................... 93
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