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Installer and user reference guide
4
18.2.3
Multiple outdoor units: Knockout holes ........................................................................................................ 92
18.2.4
To route the refrigerant piping ...................................................................................................................... 92
18.2.5
To connect the refrigerant piping to the outdoor unit ................................................................................. 93
18.2.6
To connect the multi connection piping kit ................................................................................................... 94
18.2.7
To connect the refrigerant branching kit....................................................................................................... 94
18.2.8
To protect against contamination.................................................................................................................. 95
18.2.9
To braze the pipe end..................................................................................................................................... 96
18.2.10 Using the stop valve and service port............................................................................................................ 96
18.2.11 To remove the pinched pipes......................................................................................................................... 98
18.3
Checking the refrigerant piping...................................................................................................................................... 99
18.3.1
About checking the refrigerant piping ........................................................................................................... 99
18.3.2
Checking refrigerant piping: General guidelines ........................................................................................... 100
18.3.3
Checking refrigerant piping: Setup ................................................................................................................ 101
18.3.4
To perform a leak test .................................................................................................................................... 101
18.3.5
To perform vacuum drying............................................................................................................................. 102
18.3.6
To insulate the refrigerant piping .................................................................................................................. 103
19.1
Precautions when charging refrigerant.......................................................................................................................... 105
19.2
About charging refrigerant ............................................................................................................................................. 106
19.3
About the refrigerant...................................................................................................................................................... 107
19.4
To determine the additional refrigerant amount .......................................................................................................... 107
19.5
To charge refrigerant: Flow chart................................................................................................................................... 110
19.6
To charge refrigerant ...................................................................................................................................................... 110
19.7
Error codes when charging refrigerant .......................................................................................................................... 113
19.8
Checks after charging refrigerant................................................................................................................................... 113
19.9
To fix the fluorinated greenhouse gases label ............................................................................................................... 113
19.10 To check for refrigerant leaks after charging ................................................................................................................. 113
20.1
About connecting the electrical wiring .......................................................................................................................... 115
20.1.1
Precautions when connecting the electrical wiring....................................................................................... 115
20.1.2
About the electrical wiring ............................................................................................................................. 117
20.1.3
Guidelines when knocking out knockout holes ............................................................................................. 118
20.1.4
About electrical compliance........................................................................................................................... 119
20.1.5
Safety device requirements ........................................................................................................................... 120
20.2
To route and fix the transmission wiring........................................................................................................................ 121
20.3
To connect the transmission wiring ............................................................................................................................... 123
20.4
To finish the transmission wiring.................................................................................................................................... 123
20.5
To route and fix the power supply ................................................................................................................................. 124
20.6
To connect the power supply ......................................................................................................................................... 124
20.7
To connect the external outputs .................................................................................................................................... 126
20.8
To check the insulation resistance of the compressor .................................................................................................. 127
21.1
Making field settings....................................................................................................................................................... 128
21.1.1
About making field settings............................................................................................................................ 128
21.1.2
Field setting components............................................................................................................................... 129
21.1.3
To access the field setting components......................................................................................................... 129
21.1.4
To access mode 1 or 2.................................................................................................................................... 130
21.1.5
To use mode 1 ................................................................................................................................................ 131
21.1.6
To use mode 2 ................................................................................................................................................ 132
21.1.7
Mode 1: monitoring settings.......................................................................................................................... 133
21.1.8
Mode 2: field settings..................................................................................................................................... 135
21.2
Energy saving and optimum operation .......................................................................................................................... 142
21.2.1
Available main operation methods................................................................................................................ 142
21.2.2
Available comfort settings.............................................................................................................................. 143
21.2.3
Example: Automatic mode during cooling..................................................................................................... 145
21.2.4
Example: Automatic mode during heating .................................................................................................... 146
21.3
Using the leak detection function .................................................................................................................................. 147
21.3.1
About automatic leak detection .................................................................................................................... 147
21.3.2
To manually perform a leak detection........................................................................................................... 148
22.1
Overview: Commissioning .............................................................................................................................................. 149
22.2
Precautions when commissioning .................................................................................................................................. 149
22.3
Checklist before commissioning..................................................................................................................................... 150
22.4
Checklist during commissioning ..................................................................................................................................... 151
22.5
About the test run........................................................................................................................................................... 152
22.6
To perform a test run...................................................................................................................................................... 152
22.7
Correcting after abnormal completion of the test run .................................................................................................. 153
105
115
128
149
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 - 2022.07
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