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ERLA11~16D + EBVZ16S18+23D
Daikin Altherma 3 R F
4P643604-1B - 2022.05
7.2.4
To open the indoor unit ................................................................................................................................. 65
7.2.5
To lower the switch box on the indoor unit .................................................................................................. 67
7.2.6
To close the indoor unit ................................................................................................................................. 68
7.3
Mounting the outdoor unit............................................................................................................................................. 68
7.3.1
About mounting the outdoor unit ................................................................................................................. 68
7.3.2
Precautions when mounting the outdoor unit .............................................................................................. 68
7.3.3
To provide the installation structure ............................................................................................................. 68
7.3.4
To install the outdoor unit ............................................................................................................................. 69
7.3.5
To provide drainage........................................................................................................................................ 70
7.3.6
To install the discharge grille.......................................................................................................................... 71
7.4
Mounting the indoor unit ............................................................................................................................................... 72
7.4.1
About mounting the indoor unit.................................................................................................................... 72
7.4.2
Precautions when mounting the indoor unit................................................................................................. 72
7.4.3
To install the indoor unit ................................................................................................................................ 72
7.4.4
To connect the drain hose to the drain ......................................................................................................... 73
8.1
Preparing refrigerant piping ........................................................................................................................................... 74
8.1.1
Refrigerant piping requirements.................................................................................................................... 74
8.1.2
Refrigerant piping insulation.......................................................................................................................... 75
8.2
Connecting the refrigerant piping .................................................................................................................................. 75
8.2.1
About connecting the refrigerant piping ....................................................................................................... 75
8.2.2
Precautions when connecting the refrigerant piping.................................................................................... 76
8.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 77
8.2.4
Pipe bending guidelines ................................................................................................................................. 77
8.2.5
To flare the pipe end ...................................................................................................................................... 77
8.2.6
To braze the pipe end..................................................................................................................................... 78
8.2.7
Using the stop valve and service port............................................................................................................ 79
8.2.8
To connect the refrigerant piping to the outdoor unit ................................................................................. 80
8.2.9
To connect the refrigerant piping to the indoor unit .................................................................................... 83
8.3
Checking the refrigerant piping...................................................................................................................................... 83
8.3.1
About checking the refrigerant piping ........................................................................................................... 83
8.3.2
Precautions when checking the refrigerant piping........................................................................................ 84
8.3.3
Checking refrigerant piping: Setup ................................................................................................................ 84
8.3.4
To check for leaks ........................................................................................................................................... 84
8.3.5
To perform vacuum drying............................................................................................................................. 85
8.4
Charging refrigerant........................................................................................................................................................ 86
8.4.1
About charging refrigerant............................................................................................................................. 86
8.4.2
Precautions when charging refrigerant ......................................................................................................... 87
8.4.3
Charging additional refrigerant...................................................................................................................... 88
8.4.4
Completely recharging refrigerant................................................................................................................. 88
8.4.5
To fix the fluorinated greenhouse gases label............................................................................................... 89
8.5
Preparing water piping ................................................................................................................................................... 90
8.5.1
Water circuit requirements............................................................................................................................ 90
8.5.2
Formula to calculate the expansion vessel pre-pressure .............................................................................. 93
8.5.3
To check the water volume and flow rate ..................................................................................................... 93
8.5.4
Changing the pre-pressure of the expansion vessel...................................................................................... 96
8.5.5
To check the water volume: Examples .......................................................................................................... 96
8.6
Connecting water piping................................................................................................................................................. 97
8.6.1
About connecting the water piping ............................................................................................................... 97
8.6.2
Precautions when connecting the water piping............................................................................................ 97
8.6.3
To connect the water piping .......................................................................................................................... 97
8.6.4
To connect the recirculation piping ............................................................................................................... 99
8.6.5
To fill the water circuit ................................................................................................................................... 100
8.6.6
To fill the domestic hot water tank................................................................................................................ 100
8.6.7
To insulate the water piping .......................................................................................................................... 100
9.1
About connecting the electrical wiring .......................................................................................................................... 101
9.1.1
Precautions when connecting the electrical wiring....................................................................................... 102
9.1.2
Guidelines when connecting the electrical wiring......................................................................................... 103
9.1.3
About electrical compliance........................................................................................................................... 104
9.1.4
About preferential kWh rate power supply................................................................................................... 104
9.1.5
Overview of electrical connections except external actuators ..................................................................... 105
9.2
Connections to the outdoor unit.................................................................................................................................... 105
9.2.1
Specifications of standard wiring components.............................................................................................. 106
9.2.2
To connect the electrical wiring to the outdoor unit .................................................................................... 106
9.3
Connections to the indoor unit ...................................................................................................................................... 108
9.3.1
To connect the main power supply................................................................................................................ 111
9.3.2
To connect the backup heater power supply ................................................................................................ 113
Table of contents
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101
Installer reference guide
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