Daikin RXYSQ4T8VB Series Installer And User Reference Manual page 4

Table of contents
Installer and user reference guide
4
18.2.5 To flare the pipe end ...................................................................................................................................... 73
18.2.6 To braze the pipe end..................................................................................................................................... 74
18.2.7 Using the stop valve and service port............................................................................................................ 75
18.2.8 To connect the refrigerant piping to the outdoor unit ................................................................................. 76
18.2.9 To connect the refrigerant branching kit....................................................................................................... 78
18.3 Checking the refrigerant piping...................................................................................................................................... 79
18.3.1 About checking the refrigerant piping ........................................................................................................... 79
18.3.2 Checking refrigerant piping: General guidelines ........................................................................................... 80
18.3.3 Checking refrigerant piping: Setup ................................................................................................................ 81
18.3.4 To perform a leak test .................................................................................................................................... 81
18.3.5 To perform vacuum drying............................................................................................................................. 82
18.3.6 To insulate the refrigerant piping .................................................................................................................. 82
18.4 Charging refrigerant........................................................................................................................................................ 83
18.4.1 About charging refrigerant............................................................................................................................. 83
18.4.2 Precautions when charging refrigerant ......................................................................................................... 83
18.4.3 To determine the additional refrigerant amount .......................................................................................... 84
18.4.4 To charge refrigerant...................................................................................................................................... 85
18.4.5 Error codes when charging refrigerant.......................................................................................................... 87
18.4.6 To fix the fluorinated greenhouse gases label............................................................................................... 87
19 Electrical installation
19.1 About connecting the electrical wiring .......................................................................................................................... 89
19.1.1 Precautions when connecting the electrical wiring....................................................................................... 89
19.1.2 Field wiring: Overview .................................................................................................................................... 91
19.1.3 Guidelines when knocking out knockout holes ............................................................................................. 92
19.1.4 Guidelines when connecting the electrical wiring......................................................................................... 92
19.1.5 About electrical compliance........................................................................................................................... 93
19.1.6 Safety device requirements ........................................................................................................................... 93
19.2 To connect the electrical wiring to the outdoor unit..................................................................................................... 94
19.3 To finish the transmission wiring.................................................................................................................................... 97
19.4 To check the insulation resistance of the compressor .................................................................................................. 98
20 Configuration
20.1 Overview: Configuration................................................................................................................................................. 99
20.2 Making field settings....................................................................................................................................................... 99
20.2.1 About making field settings............................................................................................................................ 99
20.2.2 To access the field setting components......................................................................................................... 100
20.2.3 Field setting components............................................................................................................................... 100
20.2.4 To access mode 1 or 2.................................................................................................................................... 101
20.2.5 To use mode 1 ................................................................................................................................................ 102
20.2.6 To use mode 2 ................................................................................................................................................ 103
20.2.7 Mode 1: Monitoring settings ......................................................................................................................... 104
20.2.8 Mode 2: Field settings .................................................................................................................................... 104
20.2.9 To connect the PC configurator to the outdoor unit..................................................................................... 107
20.3 Energy saving and optimum operation .......................................................................................................................... 108
20.3.1 Available main operation methods................................................................................................................ 108
20.3.2 Available comfort settings.............................................................................................................................. 109
20.3.3 Example: Automatic mode during cooling..................................................................................................... 111
20.3.4 Example: Automatic mode during heating .................................................................................................... 112
21 Commissioning
21.1 Precautions when commissioning .................................................................................................................................. 114
21.2 Checklist before commissioning..................................................................................................................................... 114
21.3 Checklist during commissioning ..................................................................................................................................... 116
21.4 About the test run........................................................................................................................................................... 116
21.5 To perform a test run (7-segment display) .................................................................................................................... 116
21.6 Correcting after abnormal completion of the test run .................................................................................................. 116
21.7 Operating the unit........................................................................................................................................................... 117
22 Hand-over to the user
23 Maintenance and service
23.1 Maintenance safety precautions.................................................................................................................................... 119
23.1.1 To prevent electrical hazards ......................................................................................................................... 119
23.2 Checklist for yearly maintenance of the outdoor unit................................................................................................... 120
23.3 About service mode operation....................................................................................................................................... 120
23.3.1 To use vacuum mode ..................................................................................................................................... 121
23.3.2 To recover refrigerant .................................................................................................................................... 121
24 Troubleshooting
24.1 Overview: Troubleshooting ............................................................................................................................................ 122
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RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B - 2020.10