Daikin EHFZ03S18DJ3V [3/192] Table of contents

Daikin EHFZ03S18DJ3V [3/192] Table of contents
Table of contents
Installer reference guide
3
ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1A – 2020.05
6.2.5 To lower the switch box on the indoor unit .................................................................................................. 45
6.2.6 To close the indoor unit ................................................................................................................................. 45
6.3 Mounting the outdoor unit............................................................................................................................................. 46
6.3.1 About mounting the outdoor unit ................................................................................................................. 46
6.3.2 Precautions when mounting the outdoor unit.............................................................................................. 46
6.3.3 To provide the installation structure ............................................................................................................. 46
6.3.4 To install the outdoor unit ............................................................................................................................. 47
6.3.5 To provide drainage........................................................................................................................................ 47
6.3.6 To prevent the outdoor unit from falling over .............................................................................................. 48
6.4 Mounting the indoor unit ............................................................................................................................................... 49
6.4.1 About mounting the indoor unit.................................................................................................................... 49
6.4.2 Precautions when mounting the indoor unit................................................................................................. 49
6.4.3 To install the indoor unit ................................................................................................................................ 49
6.4.4 To connect the drain hose to the drain ......................................................................................................... 50
6.5 Finishing the outdoor unit installation ........................................................................................................................... 51
6.5.1 To finish the outdoor unit installation ........................................................................................................... 51
7 Piping installation 52
7.1 Preparing refrigerant piping ........................................................................................................................................... 52
7.1.1 Refrigerant piping requirements.................................................................................................................... 52
7.1.2 Refrigerant piping insulation.......................................................................................................................... 53
7.2 Preparing water piping ................................................................................................................................................... 53
7.2.1 Water circuit requirements............................................................................................................................ 53
7.2.2 Formula to calculate the expansion vessel pre-pressure.............................................................................. 56
7.2.3 To check the water volume and flow rate ..................................................................................................... 56
7.2.4 Changing the pre-pressure of the expansion vessel...................................................................................... 58
7.2.5 To check the water volume: Examples .......................................................................................................... 58
7.3 Connecting the refrigerant piping .................................................................................................................................. 59
7.3.1 About connecting the refrigerant piping ....................................................................................................... 59
7.3.2 Precautions when connecting the refrigerant piping.................................................................................... 59
7.3.3 Guidelines when connecting the refrigerant piping...................................................................................... 60
7.3.4 Pipe bending guidelines ................................................................................................................................. 61
7.3.5 To flare the pipe end ...................................................................................................................................... 61
7.3.6 To braze the pipe end..................................................................................................................................... 62
7.3.7 Using the stop valve and service port............................................................................................................ 62
7.3.8 To connect the refrigerant piping to the outdoor unit ................................................................................. 64
7.3.9 To connect the refrigerant piping to the indoor unit .................................................................................... 64
7.4 Checking the refrigerant piping...................................................................................................................................... 65
7.4.1 About checking the refrigerant piping........................................................................................................... 65
7.4.2 Precautions when checking the refrigerant piping........................................................................................ 65
7.4.3 To check for leaks ........................................................................................................................................... 65
7.4.4 To perform vacuum drying............................................................................................................................. 66
7.5 Charging refrigerant........................................................................................................................................................ 67
7.5.1 About charging refrigerant............................................................................................................................. 67
7.5.2 About the refrigerant ..................................................................................................................................... 67
7.5.3 Precautions when charging refrigerant ......................................................................................................... 68
7.5.4 To determine the complete recharge amount.............................................................................................. 68
7.5.5 To fix the fluorinated greenhouse gases label............................................................................................... 68
7.6 Connecting water piping................................................................................................................................................. 69
7.6.1 About connecting the water piping ............................................................................................................... 69
7.6.2 Precautions when connecting the water piping............................................................................................ 69
7.6.3 To connect the water piping .......................................................................................................................... 70
7.6.4 To connect the recirculation piping ............................................................................................................... 71
7.6.5 To fill the water circuit ................................................................................................................................... 72
7.6.6 To fill the domestic hot water tank................................................................................................................ 72
7.6.7 To insulate the water piping .......................................................................................................................... 72
8 Electrical installation 73
8.1 About connecting the electrical wiring .......................................................................................................................... 73
8.1.1 Precautions when connecting the electrical wiring....................................................................................... 73
8.1.2 Guidelines when connecting the electrical wiring......................................................................................... 74
8.1.3 Specifications of standard wiring components.............................................................................................. 75
8.1.4 About electrical compliance........................................................................................................................... 76
8.1.5 About preferential kWh rate power supply................................................................................................... 76
8.1.6 Overview of electrical connections except external actuators ..................................................................... 77
8.2 Connections to the outdoor unit.................................................................................................................................... 77
8.2.1 To connect the electrical wiring to the outdoor unit .................................................................................... 77
8.3 Connections to the indoor unit ...................................................................................................................................... 78
8.3.1 To connect the main power supply................................................................................................................ 80
8.3.2 To connect the backup heater power supply ................................................................................................ 82

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