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SV1A25AJV1B+SV4~8A14AJV1B
VRV 5 safety valve unit
4P749917-1 - 2023.09
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
15.1
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
16.1
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
17.1
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
18.1
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
20.1
Before the maintenance and service of the SV unit ...................................................................................................... 117
20.2
SV unit maintenance and service label........................................................................................................................... 117
21.1
Solving problems based on error codes ......................................................................................................................... 118
21.1.1
Prerequisites: Troubleshooting...................................................................................................................... 118
Table of contents
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100
109
116
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118
Installer and user reference guide
3
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Table of Contents
Troubleshooting
