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ERRA08~12E + ELVZ12S18+23E
Daikin Altherma 3 R MT F
4P708478-1 - 2023.05
7.2.3
To remove the transportation stay ................................................................................................................ 66
7.2.4
To attach the compressor cover piece .......................................................................................................... 67
7.2.5
To close the outdoor unit............................................................................................................................... 67
7.2.6
To open the indoor unit ................................................................................................................................. 68
7.2.7
To lower the switch box on the indoor unit .................................................................................................. 70
7.2.8
To close the indoor unit ................................................................................................................................. 71
7.3
Mounting the outdoor unit............................................................................................................................................. 71
7.3.1
About mounting the outdoor unit ................................................................................................................. 71
7.3.2
Precautions when mounting the outdoor unit .............................................................................................. 72
7.3.3
To provide the installation structure ............................................................................................................. 72
7.3.4
To install the outdoor unit ............................................................................................................................. 73
7.3.5
To provide drainage........................................................................................................................................ 74
7.3.6
To install the discharge grille.......................................................................................................................... 75
7.3.7
To remove the discharge grille, and put the grille in safety position............................................................ 77
7.4
Mounting the indoor unit ............................................................................................................................................... 79
7.4.1
About mounting the indoor unit.................................................................................................................... 79
7.4.2
Precautions when mounting the indoor unit................................................................................................. 79
7.4.3
To install the indoor unit ................................................................................................................................ 79
7.4.4
To connect the drain hose to the drain ......................................................................................................... 80
8.1
Preparing refrigerant piping ........................................................................................................................................... 82
8.1.1
Refrigerant piping requirements.................................................................................................................... 82
8.1.2
Refrigerant piping insulation.......................................................................................................................... 83
8.2
Connecting the refrigerant piping .................................................................................................................................. 83
8.2.1
About connecting the refrigerant piping ....................................................................................................... 84
8.2.2
Precautions when connecting the refrigerant piping.................................................................................... 84
8.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 85
8.2.4
Pipe bending guidelines ................................................................................................................................. 85
8.2.5
To flare the pipe end ...................................................................................................................................... 86
8.2.6
To braze the pipe end..................................................................................................................................... 86
8.2.7
Using the stop valve and service port............................................................................................................ 87
8.2.8
To connect the refrigerant piping to the outdoor unit ................................................................................. 88
8.2.9
To connect the refrigerant piping to the indoor unit .................................................................................... 90
8.3
Checking the refrigerant piping...................................................................................................................................... 90
8.3.1
About checking the refrigerant piping ........................................................................................................... 90
8.3.2
Precautions when checking the refrigerant piping........................................................................................ 91
8.3.3
Checking refrigerant piping: Setup ................................................................................................................ 91
8.3.4
To check for leaks ........................................................................................................................................... 92
8.3.5
To perform vacuum drying............................................................................................................................. 92
8.4
Charging refrigerant........................................................................................................................................................ 93
8.4.1
About charging refrigerant............................................................................................................................. 93
8.4.2
Precautions when charging refrigerant ......................................................................................................... 95
8.4.3
Charging additional refrigerant...................................................................................................................... 95
8.4.4
Completely recharging refrigerant................................................................................................................. 96
8.4.5
To fix the fluorinated greenhouse gases label............................................................................................... 97
8.5
Preparing water piping ................................................................................................................................................... 97
8.5.1
Water circuit requirements............................................................................................................................ 97
8.5.2
Formula to calculate the expansion vessel pre-pressure .............................................................................. 100
8.5.3
To check the water volume and flow rate ..................................................................................................... 100
8.5.4
Changing the pre-pressure of the expansion vessel...................................................................................... 103
8.5.5
To check the water volume: Examples .......................................................................................................... 103
8.6
Connecting water piping................................................................................................................................................. 104
8.6.1
About connecting the water piping ............................................................................................................... 104
8.6.2
Precautions when connecting the water piping............................................................................................ 104
8.6.3
To connect the water piping .......................................................................................................................... 104
8.6.4
To connect the recirculation piping ............................................................................................................... 107
8.6.5
To fill the water circuit ................................................................................................................................... 107
8.6.6
To fill the domestic hot water tank................................................................................................................ 107
8.6.7
To insulate the water piping .......................................................................................................................... 107
9.1
About connecting the electrical wiring .......................................................................................................................... 108
9.1.1
Precautions when connecting the electrical wiring....................................................................................... 109
9.1.2
Guidelines when connecting the electrical wiring......................................................................................... 110
9.1.3
About electrical compliance........................................................................................................................... 111
9.1.4
About preferential kWh rate power supply................................................................................................... 111
9.1.5
Overview of electrical connections except external actuators ..................................................................... 112
9.2
Connections to the outdoor unit.................................................................................................................................... 113
9.2.1
Specifications of standard wiring components.............................................................................................. 113
Table of contents
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108
Installer reference guide
3
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