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Table of contents
Installer and user reference guide
4
17.2.11 To remove the spun pipes.............................................................................................................................. 77
17.3
Checking the refrigerant piping...................................................................................................................................... 78
17.3.1
About checking the refrigerant piping ........................................................................................................... 78
17.3.2
Checking refrigerant piping: General guidelines ........................................................................................... 79
17.3.3
Checking refrigerant piping: Setup ................................................................................................................ 80
17.3.4
To perform a leak test .................................................................................................................................... 80
17.3.5
To perform vacuum drying............................................................................................................................. 81
17.3.6
To insulate the refrigerant piping .................................................................................................................. 82
17.4
Charging refrigerant........................................................................................................................................................ 82
17.4.1
Precautions when charging refrigerant ......................................................................................................... 82
17.4.2
About charging refrigerant............................................................................................................................. 83
17.4.3
To determine the additional refrigerant amount .......................................................................................... 83
17.4.4
To charge refrigerant: Flow chart .................................................................................................................. 85
17.4.5
To charge refrigerant...................................................................................................................................... 86
17.4.6
Step 6: To manually charge refrigerant ......................................................................................................... 88
17.4.7
Error codes when charging refrigerant.......................................................................................................... 89
17.4.8
Checks after charging refrigerant .................................................................................................................. 89
18.1
About connecting the electrical wiring .......................................................................................................................... 90
18.1.1
Precautions when connecting the electrical wiring....................................................................................... 90
18.1.2
Field wiring: Overview .................................................................................................................................... 92
18.1.3
About the electrical wiring ............................................................................................................................. 92
18.1.4
Guidelines when knocking out knockout holes ............................................................................................. 93
18.1.5
Safety device requirements ........................................................................................................................... 93
18.2
To route and fix the transmission wiring........................................................................................................................ 94
18.3
To connect the transmission wiring ............................................................................................................................... 96
18.4
To finish the transmission wiring.................................................................................................................................... 97
18.5
To route and fix the power supply ................................................................................................................................. 97
18.6
To connect the power supply ......................................................................................................................................... 98
18.7
To check the insulation resistance of the compressor .................................................................................................. 99
19.1
Overview: Configuration................................................................................................................................................. 100
19.2
Making field settings....................................................................................................................................................... 100
19.2.1
About making field settings............................................................................................................................ 100
19.2.2
Field setting components............................................................................................................................... 101
19.2.3
To access the field setting components......................................................................................................... 101
19.2.4
To access mode 1 or 2.................................................................................................................................... 102
19.2.5
To use mode 1 ................................................................................................................................................ 103
19.2.6
To use mode 2 ................................................................................................................................................ 104
19.2.7
Mode 1: Monitoring settings ......................................................................................................................... 105
19.2.8
Mode 2: Field settings .................................................................................................................................... 107
19.2.9
To connect the PC configurator to the outdoor unit..................................................................................... 111
19.3
Energy saving and optimum operation .......................................................................................................................... 111
19.3.1
Available main operation methods................................................................................................................ 112
19.3.2
Available comfort settings.............................................................................................................................. 113
19.3.3
Example: Automatic mode during cooling..................................................................................................... 115
19.3.4
Example: Automatic mode during heating .................................................................................................... 116
20.1
Overview: Commissioning .............................................................................................................................................. 118
20.2
Precautions when commissioning .................................................................................................................................. 118
20.3
Checklist before commissioning..................................................................................................................................... 119
20.4
About the test run........................................................................................................................................................... 120
20.5
To perform a test run...................................................................................................................................................... 121
20.6
Correcting after abnormal completion of the test run .................................................................................................. 122
20.7
Operating the unit........................................................................................................................................................... 122
22.1
Maintenance safety precautions.................................................................................................................................... 124
22.1.1
To prevent electrical hazards ......................................................................................................................... 124
22.2
About service mode operation....................................................................................................................................... 125
22.2.1
To use vacuum mode ..................................................................................................................................... 125
22.2.2
To recover refrigerant .................................................................................................................................... 126
23.1
Solving problems based on error codes ......................................................................................................................... 127
23.2
Error codes: Overview .................................................................................................................................................... 127
VRV IV+ heat pump for high ambient temperatures
4P561157-1B - 2021.11
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100
118
123
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127
RXYTQ
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