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Daikin Altherma 3 R F
4P643602-1B - 2022.05
7.2.1
About opening the units................................................................................................................................. 76
7.2.2
To open the outdoor unit............................................................................................................................... 76
7.2.3
To close the outdoor unit............................................................................................................................... 77
7.2.4
To open the indoor unit ................................................................................................................................. 77
7.2.5
To lower the switch box on the indoor unit .................................................................................................. 79
7.2.6
To close the indoor unit ................................................................................................................................. 80
7.3
Mounting the outdoor unit............................................................................................................................................. 80
7.3.1
About mounting the outdoor unit ................................................................................................................. 80
7.3.2
Precautions when mounting the outdoor unit .............................................................................................. 80
7.3.3
To provide the installation structure ............................................................................................................. 80
7.3.4
To install the outdoor unit ............................................................................................................................. 81
7.3.5
To provide drainage........................................................................................................................................ 82
7.3.6
To install the discharge grille.......................................................................................................................... 83
7.4
Mounting the indoor unit ............................................................................................................................................... 84
7.4.1
About mounting the indoor unit.................................................................................................................... 84
7.4.2
Precautions when mounting the indoor unit................................................................................................. 84
7.4.3
To install the indoor unit ................................................................................................................................ 84
7.4.4
To connect the drain hose to the drain ......................................................................................................... 85
8.1
Preparing refrigerant piping ........................................................................................................................................... 86
8.1.1
Refrigerant piping requirements.................................................................................................................... 86
8.1.2
Refrigerant piping insulation.......................................................................................................................... 87
8.2
Connecting the refrigerant piping .................................................................................................................................. 87
8.2.1
About connecting the refrigerant piping ....................................................................................................... 87
8.2.2
Precautions when connecting the refrigerant piping.................................................................................... 88
8.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 89
8.2.4
Pipe bending guidelines ................................................................................................................................. 89
8.2.5
To flare the pipe end ...................................................................................................................................... 89
8.2.6
To braze the pipe end..................................................................................................................................... 90
8.2.7
Using the stop valve and service port............................................................................................................ 91
8.2.8
To connect the refrigerant piping to the outdoor unit ................................................................................. 92
8.2.9
To connect the refrigerant piping to the indoor unit .................................................................................... 95
8.3
Checking the refrigerant piping...................................................................................................................................... 95
8.3.1
About checking the refrigerant piping ........................................................................................................... 95
8.3.2
Precautions when checking the refrigerant piping........................................................................................ 96
8.3.3
Checking refrigerant piping: Setup ................................................................................................................ 96
8.3.4
To check for leaks ........................................................................................................................................... 96
8.3.5
To perform vacuum drying............................................................................................................................. 97
8.4
Charging refrigerant........................................................................................................................................................ 98
8.4.1
About charging refrigerant............................................................................................................................. 98
8.4.2
Precautions when charging refrigerant ......................................................................................................... 99
8.4.3
Charging additional refrigerant...................................................................................................................... 100
8.4.4
Completely recharging refrigerant................................................................................................................. 100
8.4.5
To fix the fluorinated greenhouse gases label............................................................................................... 101
8.5
Preparing water piping ................................................................................................................................................... 102
8.5.1
Water circuit requirements............................................................................................................................ 102
8.5.2
Formula to calculate the expansion vessel pre-pressure .............................................................................. 105
8.5.3
To check the water volume and flow rate ..................................................................................................... 105
8.5.4
Changing the pre-pressure of the expansion vessel...................................................................................... 107
8.5.5
To check the water volume: Examples .......................................................................................................... 108
8.6
Connecting water piping................................................................................................................................................. 108
8.6.1
About connecting the water piping ............................................................................................................... 108
8.6.2
Precautions when connecting the water piping............................................................................................ 109
8.6.3
To connect the water piping .......................................................................................................................... 109
8.6.4
To connect the recirculation piping ............................................................................................................... 111
8.6.5
To fill the water circuit ................................................................................................................................... 111
8.6.6
To fill the domestic hot water tank................................................................................................................ 112
8.6.7
To insulate the water piping .......................................................................................................................... 112
9.1
About connecting the electrical wiring .......................................................................................................................... 113
9.1.1
Precautions when connecting the electrical wiring....................................................................................... 114
9.1.2
Guidelines when connecting the electrical wiring......................................................................................... 114
9.1.3
About electrical compliance........................................................................................................................... 116
9.1.4
About preferential kWh rate power supply................................................................................................... 116
9.1.5
Overview of electrical connections except external actuators ..................................................................... 117
9.2
Connections to the outdoor unit.................................................................................................................................... 117
9.2.1
Specifications of standard wiring components.............................................................................................. 118
9.2.2
To connect the electrical wiring to the outdoor unit .................................................................................... 118
Table of contents
86
113
Installer reference guide
3
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