Daikin VRV IV RKXYQ5T8Y1B Series, Installer And User Reference Manual

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Table of Contents
Installer and user reference guide
4
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
17.1.3 To select the piping size ................................................................................................................................. 73
17.1.4 To select refrigerant branch kits .................................................................................................................... 75
17.1.5 Refrigerant piping length and height difference ........................................................................................... 75
17.2 Connecting the refrigerant piping .................................................................................................................................. 77
17.2.1
About connecting the refrigerant piping ....................................................................................................... 77
17.2.2 Precautions when connecting the refrigerant piping.................................................................................... 77
17.2.3 Pipe bending guidelines ................................................................................................................................. 78
17.2.4 To braze the pipe end..................................................................................................................................... 78
17.2.5 Using the stop valve and service port............................................................................................................ 78
17.2.6 To remove the pinched pipes......................................................................................................................... 81
17.2.7 To connect the refrigerant piping to the compressor unit............................................................................ 82
17.2.8 To connect the refrigerant piping to the heat exchanger unit...................................................................... 84
17.2.9 To connect the refrigerant branching kit....................................................................................................... 85
17.3 Checking the refrigerant piping...................................................................................................................................... 85
17.3.1
About checking the refrigerant piping ........................................................................................................... 85
17.3.2 Checking refrigerant piping: General guidelines ........................................................................................... 86
17.3.3 Checking refrigerant piping: Setup ................................................................................................................ 86
17.3.4 To perform a leak test .................................................................................................................................... 87
17.3.5 To perform vacuum drying............................................................................................................................. 88
17.3.6 To insulate the refrigerant piping .................................................................................................................. 89
17.4 Charging refrigerant........................................................................................................................................................ 89
17.4.1
About charging refrigerant............................................................................................................................. 89
17.4.2 Precautions when charging refrigerant ......................................................................................................... 90
17.4.3 To determine the additional refrigerant amount .......................................................................................... 91
17.4.4 To charge refrigerant...................................................................................................................................... 91
17.4.5 Error codes when charging refrigerant.......................................................................................................... 94
17.4.6 To fix the fluorinated greenhouse gases label............................................................................................... 94
18 Electrical installation 95
18.1 About connecting the electrical wiring .......................................................................................................................... 95
18.1.1
Precautions when connecting the electrical wiring....................................................................................... 95
18.1.2 Field wiring: Overview .................................................................................................................................... 97
18.1.3 About the electrical wiring ............................................................................................................................. 99
18.1.4 Guidelines when knocking out knockout holes ............................................................................................. 99
18.1.5 About electrical compliance........................................................................................................................... 99
18.1.6 Safety device requirements ........................................................................................................................... 100
18.2 To connect the electrical wiring on the compressor unit .............................................................................................. 101
18.3 To connect the electrical wiring on the heat exchanger unit ........................................................................................ 103
18.4 To finish the transmission wiring.................................................................................................................................... 104
18.5 To close the compressor unit ......................................................................................................................................... 105
18.6 To close the heat exchanger unit ................................................................................................................................... 105
18.7 To check the insulation resistance of the compressor .................................................................................................. 105
19 Configuration 107
19.1 Overview: Configuration................................................................................................................................................. 107
19.2 Making field settings....................................................................................................................................................... 107
19.2.1
About making field settings............................................................................................................................ 107
19.2.2 To access the field setting components......................................................................................................... 108
19.2.3 Field setting components............................................................................................................................... 108
19.2.4 To access mode 1 or 2.................................................................................................................................... 110
19.2.5 To use mode 1 (and default situation)........................................................................................................... 111
19.2.6 To use mode 2 ................................................................................................................................................ 113
19.2.7 Mode 1 (and default situation): Monitoring settings .................................................................................... 114
19.2.8 Mode 2: Field settings .................................................................................................................................... 118
19.2.9 To connect the PC configurator to the compressor unit............................................................................... 122
19.3 Energy saving and optimum operation .......................................................................................................................... 122
19.3.1
Available main operation methods................................................................................................................ 123
19.3.2 Available comfort settings.............................................................................................................................. 124
19.3.3 Example: Automatic mode during cooling..................................................................................................... 126
19.3.4 Example: Automatic mode during heating .................................................................................................... 127
20 Commissioning 129
20.1 Overview: Commissioning .............................................................................................................................................. 129
20.2 Precautions when commissioning .................................................................................................................................. 129
20.3 Checklist before commissioning..................................................................................................................................... 130
20.4 Checklist during commissioning ..................................................................................................................................... 131
20.4.1
About the test run .......................................................................................................................................... 131
20.4.2 To perform a test run (7-LEDs display) .......................................................................................................... 132
20.4.3 To perform a test run (7-segment display).................................................................................................... 133
20.4.4 Correcting after abnormal completion of the test run.................................................................................. 134