Table of contents
Installer and user reference guide
3
SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 – 2023.09
14 Unit installation 63
14.1 Preparing the installation site......................................................................................................................................... 63
14.1.1 Installation site requirements of the unit ...................................................................................................... 63
14.2 Possible configurations ................................................................................................................................................... 66
14.3 Opening and closing the unit.......................................................................................................................................... 68
14.3.1 To open the unit ............................................................................................................................................. 68
14.3.2 To close the unit ............................................................................................................................................. 68
14.4 Mounting the unit........................................................................................................................................................... 68
14.4.1 To mount the unit........................................................................................................................................... 68
14.4.2 To connect the drain piping ........................................................................................................................... 70
14.4.3 To install the drain piping............................................................................................................................... 71
14.5 Installing the ventilation ducting .................................................................................................................................... 72
14.5.1 To install the ducting ...................................................................................................................................... 72
14.5.2 To install the duct closing plate...................................................................................................................... 73
14.5.3 To switch the air in- and outlet side............................................................................................................... 74
15 Piping installation 80
15.1 Installation limitations .................................................................................................................................................... 81
15.1.1 Piping installation limitation........................................................................................................................... 82
15.2 Preparing refrigerant piping ........................................................................................................................................... 83
15.2.1 Refrigerant piping requirements.................................................................................................................... 83
15.2.2 Refrigerant piping material ............................................................................................................................ 83
15.2.3 Refrigerant piping insulation .......................................................................................................................... 83
15.3 Connecting the refrigerant piping .................................................................................................................................. 84
15.3.1 To connect the refrigerant piping .................................................................................................................. 84
15.3.2 To braze the pipe end..................................................................................................................................... 85
15.3.3 Joining branch pipe ports ............................................................................................................................... 86
15.4 To insulate the refrigerant piping................................................................................................................................... 86
16 Electrical installation 88
16.1 About connecting the electrical wiring .......................................................................................................................... 88
16.1.1 Precautions when connecting the electrical wiring....................................................................................... 88
16.1.2 Specifications of standard wiring components.............................................................................................. 89
16.1.3 Guidelines when connecting the electrical wiring......................................................................................... 91
16.2 To connect the electrical wiring ..................................................................................................................................... 93
16.3 To finish the electrical wiring.......................................................................................................................................... 96
16.4 To set the DIP switches................................................................................................................................................... 96
16.5 To connect the external outputs .................................................................................................................................... 98
17 Configuration 100
17.1 Making field settings....................................................................................................................................................... 100
17.1.1 About making field settings............................................................................................................................ 100
17.1.2 To access the field setting components......................................................................................................... 100
17.1.3 Field setting components ............................................................................................................................... 100
17.1.4 To access mode 1 or 2 .................................................................................................................................... 101
17.1.5 To use mode 1 ................................................................................................................................................ 102
17.1.6 To use mode 2 ................................................................................................................................................ 103
17.1.7 Mode 1: monitoring settings.......................................................................................................................... 104
17.1.8 Mode 2: field settings..................................................................................................................................... 104
17.1.9 Mode 2: default field settings ........................................................................................................................ 108
18 Commissioning 109
18.1 Precautions when commissioning .................................................................................................................................. 109
18.2 Checklist before commissioning ..................................................................................................................................... 109
18.3 SV unit test run ............................................................................................................................................................... 110
18.3.1 About the SV unit test run.............................................................................................................................. 110
18.3.2 About airflow requirements........................................................................................................................... 111
18.3.3 About measuring the airflow rate .................................................................................................................. 112
18.3.4 To perform a SV unit test run......................................................................................................................... 113
18.3.5 Troubleshooting during a SV unit test run..................................................................................................... 114
18.4 System test run ............................................................................................................................................................... 115
19 Hand-over to the user 116
20 Maintenance and service 117
20.1 Before the maintenance and service of the SV unit ...................................................................................................... 117
20.2 SV unit maintenance and service label........................................................................................................................... 117
21 Troubleshooting 118
21.1 Solving problems based on error codes ......................................................................................................................... 118
21.1.1 Prerequisites: Troubleshooting ...................................................................................................................... 118
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