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Installer and user reference guide
4
18.3
Connecting the refrigerant piping .................................................................................................................................. 83
18.3.1
About connecting the refrigerant piping ....................................................................................................... 83
18.3.2
Precautions when connecting the refrigerant piping.................................................................................... 83
18.3.3
To route the refrigerant piping ...................................................................................................................... 84
18.3.4
To connect the refrigerant piping to the outdoor unit ................................................................................. 84
18.3.5
To connect the multi connection piping kit ................................................................................................... 85
18.3.6
To connect the refrigerant branching kit....................................................................................................... 86
18.3.7
To protect against contamination.................................................................................................................. 86
18.3.8
To braze the pipe end..................................................................................................................................... 86
18.3.9
Using the stop valve and service port............................................................................................................ 87
18.3.10 To remove the spun pipes.............................................................................................................................. 89
18.4
Checking the refrigerant piping...................................................................................................................................... 91
18.4.1
About checking the refrigerant piping ........................................................................................................... 91
18.4.2
Checking refrigerant piping: General guidelines ........................................................................................... 92
18.4.3
Checking refrigerant piping: Setup ................................................................................................................ 93
18.4.4
To perform a leak test .................................................................................................................................... 93
18.4.5
To perform vacuum drying............................................................................................................................. 94
18.4.6
To insulate the refrigerant piping .................................................................................................................. 95
18.5
Charging refrigerant........................................................................................................................................................ 95
18.5.1
Precautions when charging refrigerant ......................................................................................................... 95
18.5.2
About charging refrigerant............................................................................................................................. 96
18.5.3
To determine the additional refrigerant amount .......................................................................................... 96
18.5.4
To charge refrigerant...................................................................................................................................... 98
18.5.5
Checks after charging refrigerant .................................................................................................................. 100
18.5.6
To fix the fluorinated greenhouse gases label............................................................................................... 100
18.6
Connecting water piping................................................................................................................................................. 101
18.6.1
About connecting the water piping ............................................................................................................... 101
18.6.2
Precautions when connecting the water piping............................................................................................ 101
18.6.3
To connect the water piping .......................................................................................................................... 101
18.6.4
To fill the water circuit ................................................................................................................................... 102
18.6.5
To insulate the water piping .......................................................................................................................... 102
19.1
About connecting the electrical wiring .......................................................................................................................... 103
19.1.1
Precautions when connecting the electrical wiring....................................................................................... 103
19.1.2
Field wiring: Overview .................................................................................................................................... 105
19.1.3
About the electrical wiring ............................................................................................................................. 105
19.1.4
About electrical compliance........................................................................................................................... 107
19.1.5
Safety device requirements ........................................................................................................................... 108
19.2
To route and fix the transmission wiring........................................................................................................................ 109
19.3
To connect the transmission wiring ............................................................................................................................... 109
19.4
To finish the transmission wiring.................................................................................................................................... 111
19.5
To route and fix the power supply ................................................................................................................................. 111
19.6
To connect the power supply ......................................................................................................................................... 112
19.7
To connect the optional wiring....................................................................................................................................... 113
19.8
To check the insulation resistance of the compressor .................................................................................................. 115
20.1
Overview: Configuration................................................................................................................................................. 116
20.2
Making field settings....................................................................................................................................................... 116
20.2.1
About making field settings............................................................................................................................ 116
20.2.2
Field setting components............................................................................................................................... 117
20.2.3
To access the field setting components......................................................................................................... 118
20.2.4
To access mode 1 or 2.................................................................................................................................... 118
20.2.5
To use mode 1 ................................................................................................................................................ 119
20.2.6
To use mode 2 ................................................................................................................................................ 120
20.2.7
Mode 1: Monitoring settings ......................................................................................................................... 121
20.2.8
Mode 2: Field settings .................................................................................................................................... 122
20.2.9
To connect the PC configurator to the outdoor unit..................................................................................... 127
21.1
Overview: Commissioning .............................................................................................................................................. 128
21.2
Precautions when commissioning .................................................................................................................................. 128
21.3
Checklist before commissioning..................................................................................................................................... 129
21.4
About the test run........................................................................................................................................................... 130
21.5
To perform a test run...................................................................................................................................................... 131
21.6
Correcting after abnormal completion of the test run .................................................................................................. 132
21.7
Operating the unit........................................................................................................................................................... 132
22.1
Maintenance safety precautions.................................................................................................................................... 133
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B - 2020.10
103
116
128
133
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