Table of Contents
Installation and operation manual
3
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
Table of Contents
About this document..................................................................
Compressor unit ........................................................................
To remove the accessories from the compressor unit
To remove the transportation stay ..............................
About the compressor unit and heat exchanger unit.................
System layout ............................................................................
Preparing installation site ..........................................................
Installation site requirements of the compressor unit..
Preparing refrigerant piping .......................................................
Refrigerant piping requirements..................................
Refrigerant piping material..........................................
To select the piping size .............................................
To select refrigerant branch kits..................................
Preparing electrical wiring .........................................................
Safety device requirements ........................................
Opening the units ......................................................................
To open the compressor unit ......................................
Mounting the compressor unit ...................................................
Guidelines when installing the compressor unit..........
Connecting the refrigerant piping ..............................................
Using the stop valve and service port .........................
To remove the pinched pipes......................................
Checking the refrigerant piping .................................................
About checking the refrigerant piping ......................... 10
Checking refrigerant piping: General guidelines ......... 10
Checking refrigerant piping: Setup.............................. 10
To perform a leak test ................................................. 11
To perform vacuum drying .......................................... 11
To insulate the refrigerant piping ...............................................
Charging refrigerant ..................................................................
Precautions when charging refrigerant ....................... 11
To determine the additional refrigerant amount .......... 12
To charge refrigerant .................................................. 12
Error codes when charging refrigerant........................ 13
To fix the fluorinated greenhouse gases label ............ 13
Connecting the electrical wiring.................................................
Field wiring: Overview................................................. 13
Guidelines when connecting the electrical wiring ....... 14
Finishing the compressor unit installation .................................
To finish the transmission wiring................................. 15
Making field settings ..................................................................
About making field settings ......................................... 15
To access the field setting components...................... 15
Field setting components ............................................ 15
To access mode 1 or 2 ............................................... 16
To use mode 1 (and default situation) ........................ 16
To use mode 2 ............................................................ 17
Mode 1 (and default situation): Monitoring settings .... 17
Mode 2: Field settings.................................................. 18
Precautions when commissioning .............................................. 20
Checklist before commissioning ................................................. 20
Checklist during commissioning ................................................. 21
About test run............................................................... 21
To perform a test run (7-LEDs display)........................ 21
Correcting after abnormal completion of the test run... 22
Operating the unit ........................................................ 22
Solving problems based on error codes ..................................... 22
Error codes: Overview ................................................. 22
Piping diagram: Compressor unit and heat exchanger unit ....... 24
Wiring diagram: Compressor unit ............................................... 24
System layout ............................................................................. 25
Operation range ......................................................................... 25
Operating the system ................................................................. 26
About operating the system ......................................... 26
About the heating operation......................................... 26
Using the dry program ................................................................ 27
About the dry program ................................................. 27
Adjusting the air flow direction.................................................... 27
About the air flow flap .................................................. 27
Setting the master user interface ............................................... 27
About setting the master user interface ....................... 27
To designate the master user interface (VRV DX)....... 28
After-sales service and warranty ................................................ 28
Warranty period ........................................................... 28
Recommended maintenance and inspection............... 28
Error codes: Overview ................................................................ 29
Symptoms that are not air conditioner troubles .......................... 30
Symptom: The system does not operate ..................... 30
