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Installer and user reference guide
4
18.2.4
To route the refrigerant piping ...................................................................................................................... 82
18.2.5
To connect the refrigerant piping to the outdoor unit ................................................................................. 83
18.2.6
To connect the multi connection piping kit ................................................................................................... 84
18.2.7
To connect the refrigerant branching kit....................................................................................................... 84
18.2.8
To protect against contamination.................................................................................................................. 85
18.2.9
To braze the pipe end..................................................................................................................................... 86
18.2.10 Using the stop valve and service port............................................................................................................ 86
18.2.11 To remove the spun pipes.............................................................................................................................. 89
18.3
Checking the refrigerant piping...................................................................................................................................... 90
18.3.1
About checking the refrigerant piping ........................................................................................................... 90
18.3.2
Checking refrigerant piping: General guidelines ........................................................................................... 91
18.3.3
Checking refrigerant piping: Setup ................................................................................................................ 92
18.3.4
To perform a leak test .................................................................................................................................... 92
18.3.5
To perform vacuum drying............................................................................................................................. 93
18.3.6
To insulate the refrigerant piping .................................................................................................................. 93
18.4
Charging refrigerant........................................................................................................................................................ 94
18.4.1
Precautions when charging refrigerant ......................................................................................................... 94
18.4.2
About charging refrigerant............................................................................................................................. 95
18.4.3
To determine the additional refrigerant amount .......................................................................................... 95
18.4.4
To charge refrigerant: Flow chart .................................................................................................................. 97
18.4.5
To charge refrigerant...................................................................................................................................... 98
18.4.6
Step 6: To manually charge refrigerant ......................................................................................................... 100
18.4.7
Checks after charging refrigerant .................................................................................................................. 100
18.4.8
To fix the fluorinated greenhouse gases label............................................................................................... 101
19.1
About connecting the electrical wiring .......................................................................................................................... 102
19.1.1
Precautions when connecting the electrical wiring....................................................................................... 102
19.1.2
Field wiring: Overview .................................................................................................................................... 104
19.1.3
About the electrical wiring ............................................................................................................................. 104
19.1.4
Guidelines when knocking out knockout holes ............................................................................................. 105
19.1.5
About electrical compliance........................................................................................................................... 106
19.1.6
Safety device requirements ........................................................................................................................... 106
19.2
To route and fix the transmission wiring........................................................................................................................ 108
19.3
To connect the transmission wiring ............................................................................................................................... 108
19.4
To finish the transmission wiring.................................................................................................................................... 109
19.5
To route and fix the power supply ................................................................................................................................. 110
19.6
To connect the power supply ......................................................................................................................................... 110
19.7
To check the insulation resistance of the compressor .................................................................................................. 112
20.1
Overview: Configuration................................................................................................................................................. 113
20.2
Making field settings....................................................................................................................................................... 113
20.2.1
About making field settings............................................................................................................................ 113
20.2.2
Field setting components............................................................................................................................... 115
20.2.3
To access the field setting components......................................................................................................... 115
20.2.4
To access mode 1 or 2.................................................................................................................................... 116
20.2.5
To use mode 1 ................................................................................................................................................ 117
20.2.6
To use mode 2 ................................................................................................................................................ 117
20.2.7
Mode 1: Monitoring settings ......................................................................................................................... 118
20.2.8
Mode 2: Field settings .................................................................................................................................... 120
20.2.9
To connect the PC configurator to the outdoor unit..................................................................................... 126
20.3
Energy saving and optimum operation .......................................................................................................................... 126
20.3.1
Available main operation methods................................................................................................................ 127
20.3.2
Available comfort settings.............................................................................................................................. 128
20.3.3
Example: Automatic mode during cooling..................................................................................................... 130
20.3.4
Example: Automatic mode during heating .................................................................................................... 131
21.1
Overview: Commissioning .............................................................................................................................................. 133
21.2
Precautions when commissioning .................................................................................................................................. 133
21.3
Checklist before commissioning..................................................................................................................................... 134
21.4
About the test run........................................................................................................................................................... 135
21.5
To perform a test run...................................................................................................................................................... 136
21.6
Correcting after abnormal completion of the test run .................................................................................................. 137
21.7
Operating the unit........................................................................................................................................................... 137
23.1
Maintenance safety precautions.................................................................................................................................... 139
102
113
133
138
139
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543427-1A - 2020.10
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