Table of Contents
Installer and user reference guide
2
RKXYQ5TAY1B + RDXYQ5TAV1B
VRV IV heat pump for indoor installation
4P482266-1 – 2017.03
Table of Contents
1 General safety precautions 3
1.1 About the documentation .......................................................... 3
1.1.1 Meaning of warnings and symbols.............................. 3
1.2 For the user ............................................................................... 4
1.3 For the installer.......................................................................... 4
1.3.1 General ....................................................................... 4
1.3.2 Installation site ............................................................ 5
1.3.3 Refrigerant .................................................................. 5
1.3.4 Brine............................................................................ 6
1.3.5 Water .......................................................................... 6
1.3.6 Electrical ..................................................................... 6
2 About the documentation 7
2.1 About this document.................................................................. 7
For the installer 7
3 About the box 7
3.1 Overview: About the box ........................................................... 7
3.2 Compressor unit ........................................................................ 8
3.2.1 To unpack the compressor unit................................... 8
3.2.2 To handle the compressor unit ................................... 8
3.2.3 To remove the accessories from the compressor unit 8
3.2.4 To remove the transportation EPS.............................. 8
3.3 Heat exchanger unit .................................................................. 8
3.3.1 To unpack the heat exchanger unit............................. 8
3.3.2 To handle the heat exchanger unit ............................. 8
3.3.3 To remove the accessories from the heat exchanger
unit .............................................................................. 9
3.3.4 To remove the transportation sheet............................ 9
4 About the units and options 9
4.1 Overview: About the units and options...................................... 9
4.2 Identification .............................................................................. 9
4.2.1 Identification label: Compressor unit........................... 9
4.2.2 Identification label: Heat exchanger unit..................... 9
4.3 About the compressor unit and heat exchanger unit................. 10
4.4 System layout............................................................................ 10
4.5 Combining units and options ..................................................... 10
4.5.1 About combining units and options............................. 10
4.5.2 Possible combinations of indoor units......................... 10
4.5.3 Possible options for the compressor unit and heat
exchanger unit ............................................................ 10
5 Preparation 11
5.1 Overview: Preparation............................................................... 11
5.2 Preparing installation site .......................................................... 11
5.2.1 Installation site requirements of the compressor unit.. 12
5.2.2 Installation site requirements of the heat exchanger
unit .............................................................................. 12
5.2.3 Securing safety against refrigerant leaks.................... 13
5.3 Preparing refrigerant piping....................................................... 14
5.3.1 Refrigerant piping requirements.................................. 14
5.3.2 Refrigerant piping material.......................................... 14
5.3.3 To select the piping size ............................................. 14
5.3.4 To select refrigerant branch kits.................................. 15
5.3.5 Refrigerant piping length and height difference .......... 15
5.4 Preparing electrical wiring ......................................................... 15
5.4.1 About electrical compliance ........................................ 15
5.4.2 Safety device requirements ........................................ 15
6 Installation 16
6.1 Overview: Installation ................................................................ 16
6.2 Opening the units ...................................................................... 16
6.2.1 About opening the units .............................................. 16
6.2.2 To open the compressor unit ....................................... 16
6.2.3 To open the switch box cover of the heat exchanger
unit ............................................................................... 17
6.3 Mounting the compressor unit .................................................... 17
6.3.1 Precautions when mounting the compressor unit........ 17
6.3.2 Guidelines when installing the compressor unit........... 17
6.4 Mounting the heat exchanger unit .............................................. 17
6.4.1 Precautions when mounting the heat exchanger unit.. 17
6.4.2 Guidelines when installing the heat exchanger unit..... 17
6.4.3 Guidelines when installing the ducting......................... 17
6.4.4 Guidelines when installing the drain piping.................. 18
6.5 Connecting the refrigerant piping ............................................... 19
6.5.1 About connecting the refrigerant piping ....................... 19
6.5.2 Precautions when connecting the refrigerant piping.... 19
6.5.3 Pipe bending guidelines............................................... 19
6.5.4 To braze the pipe end .................................................. 19
6.5.5 Using the stop valve and service port .......................... 20
6.5.6 To remove the pinched pipes....................................... 20
6.5.7 To connect the refrigerant piping to the compressor
unit ............................................................................... 21
6.5.8 To connect the refrigerant piping to the heat
exchanger unit ............................................................. 22
6.5.9 To connect the refrigerant branching kit ...................... 22
6.6 Checking the refrigerant piping .................................................. 23
6.6.1 About checking the refrigerant piping .......................... 23
6.6.2 Checking refrigerant piping: General guidelines.......... 23
6.6.3 Checking refrigerant piping: Setup............................... 23
6.6.4 To perform a leak test .................................................. 24
6.6.5 To perform vacuum drying ........................................... 24
6.7 To insulate the refrigerant piping................................................ 24
6.8 Charging refrigerant ................................................................... 25
6.8.1 About charging refrigerant ........................................... 25
6.8.2 Precautions when charging refrigerant ........................ 25
6.8.3 To determine the additional refrigerant amount........... 25
6.8.4 To charge refrigerant ................................................... 25
6.8.5 Error codes when charging refrigerant......................... 27
6.8.6 To fix the fluorinated greenhouse gases label ............. 27
6.9 Connecting the electrical wiring.................................................. 27
6.9.1 About connecting the electrical wiring.......................... 27
6.9.2 Precautions when connecting electrical wiring ............ 28
6.9.3 Guidelines when connecting the electrical wiring ........ 28
6.9.4 To connect the electrical wiring on the compressor
unit ............................................................................... 29
6.9.5 To connect the electrical wiring on the heat
exchanger unit ............................................................. 30
6.10 Finishing the compressor unit installation .................................. 30
6.10.1 To finish the transmission wiring.................................. 30
6.10.2 To close the compressor unit....................................... 30
6.11 Finishing the heat exchanger unit installation ............................ 31
6.11.1 To close the heat exchanger unit................................. 31
7 Configuration 31
7.1 Overview: Configuration ............................................................. 31
7.2 Making field settings................................................................... 31
7.2.1 About making field settings .......................................... 31
7.2.2 To access the field setting components....................... 31
7.2.3 Field setting components ............................................. 31
7.2.4 To access mode 1 or 2 ................................................ 32
7.2.5 To use mode 1 (and default situation) ......................... 32
7.2.6 To use mode 2 ............................................................. 32
7.2.7 Mode 1 (and default situation): Monitoring settings ..... 33
7.2.8 Mode 2: Field settings.................................................. 33
7.3 Energy saving and optimum operation....................................... 35
7.3.1 Available main operation methods............................... 36
7.3.2 Available comfort settings ............................................ 36
7.3.3 Example: Automatic mode during cooling.................... 37
7.3.4 Example: Automatic mode during heating ................... 37
8 Commissioning 38
8.1 Overview: Commissioning.......................................................... 38
8.2 Precautions when commissioning .............................................. 38
