Daikin VRV IV-S RXYSQ4T8VB Series - Default Chapter; Table of Contents

Table of contents
Installation and operation manual
4
RXYSQ4~6T8V/YB(*)
VRV IV-S system air conditioner
4P482275-1B – 2020.10
Table of contents
1 About the documentation 5
1.1 About this document.................................................................. 5
2 Specific installer safety instructions 5
For the user 6
3 User safety instructions 6
3.1 General...................................................................................... 7
3.2 Instructions for safe operation ................................................... 7
4 About the system 8
4.1 System layout............................................................................ 9
5 User interface 9
6 Operation 9
6.1 Operation range ........................................................................ 9
6.2 Operating the system ................................................................ 9
6.2.1 About operating the system ........................................ 9
6.2.2 About cooling, heating, fan only, and automatic
operation ..................................................................... 9
6.2.3 About the heating operation........................................ 9
6.2.4 To operate the system (WITHOUT cool/heat
changeover remote control switch) ............................. 9
6.2.5 To operate the system (WITH cool/heat changeover
remote control switch)................................................. 10
6.3 Using the dry program............................................................... 10
6.3.1 About the dry program ................................................ 10
6.3.2 To use the dry program (WITHOUT cool/heat
changeover remote control switch) ............................. 10
6.3.3 To use the dry program (WITH cool/heat changeover
remote control switch)................................................. 10
6.4 Adjusting the air flow direction................................................... 10
6.4.1 About the air flow flap ................................................. 10
6.5 Setting the master user interface .............................................. 11
6.5.1 About setting the master user interface ...................... 11
6.5.2 To designate the master user interface (VRV DX)...... 11
6.5.3 To designate the master user interface (RA DX)........ 11
7 Maintenance and service 11
7.1 About the refrigerant.................................................................. 12
7.2 After-sales service and warranty ............................................... 12
7.2.1 Warranty period .......................................................... 12
7.2.2 Recommended maintenance and inspection.............. 12
8 Troubleshooting 12
8.1 Error codes: Overview............................................................... 13
8.2 Symptoms that are NOT system malfunctions .......................... 13
8.2.1 Symptom: The system does not operate .................... 13
8.2.2 Symptom: Cool/Heat cannot be changed over ........... 14
8.2.3 Symptom: Fan operation is possible, but cooling and
heating do not work..................................................... 14
8.2.4 Symptom: The fan speed does not correspond to the
setting ......................................................................... 14
8.2.5 Symptom: The fan direction does not correspond to
the setting ................................................................... 14
8.2.6 Symptom: White mist comes out of a unit (Indoor
unit) ............................................................................. 14
8.2.7 Symptom: White mist comes out of a unit (Indoor
unit, outdoor unit) ........................................................ 14
8.2.8 Symptom: The user interface reads "U4" or "U5" and
stops, but then restarts after a few minutes................ 14
8.2.9 Symptom: Noise of air conditioners (Indoor unit)........ 14
8.2.10 Symptom: Noise of air conditioners (Indoor unit,
outdoor unit)................................................................ 14
8.2.11 Symptom: Noise of air conditioners (Outdoor unit)..... 14
8.2.12 Symptom: Dust comes out of the unit......................... 14
8.2.13 Symptom: The units can give off odours...................... 14
8.2.14 Symptom: The outdoor unit fan does not spin ............. 14
8.2.15 Symptom: The display shows "88"............................... 14
8.2.16 Symptom: The compressor in the outdoor unit does
not stop after a short heating operation ....................... 15
8.2.17 Symptom: The inside of an outdoor unit is warm
even when the unit has stopped .................................. 15
8.2.18 Symptom: Hot air can be felt when the indoor unit is
stopped ........................................................................ 15
9 Relocation 15
10 Disposal 15
For the installer 15
11 About the box 15
11.1
About ............................................................................ 15
11.2 Outdoor unit................................................................................ 15
11.2.1 To remove the accessories from the outdoor unit........ 15
12 About the units and options 15
12.1 About the outdoor unit ................................................................ 15
12.2 System layout............................................................................. 15
13 Unit installation 16
13.1 Preparing the installation site ..................................................... 16
13.1.1 Installation site requirements of the outdoor unit ......... 16
13.1.2 Additional installation site requirements of the
outdoor unit in cold climates ........................................ 16
13.2 Opening and closing the unit...................................................... 16
13.2.1 About opening the units ............................................... 16
13.2.2 To open the outdoor unit.............................................. 16
13.2.3 To close the outdoor unit ............................................. 16
13.3 Mounting the outdoor unit........................................................... 16
13.3.1 About mounting the outdoor unit.................................. 16
13.3.2 Precautions when mounting the outdoor unit............... 17
13.3.3 To provide the installation structure............................. 17
13.3.4 To install the outdoor unit............................................. 17
13.3.5 To provide drainage..................................................... 17
13.3.6 To prevent the outdoor unit from falling over ............... 17
14 Piping installation 18
14.1 Preparing refrigerant piping........................................................ 18
14.1.1 Refrigerant piping requirements................................... 18
14.1.2 Refrigerant piping material........................................... 18
14.1.3 To select the piping size .............................................. 18
14.1.4 To select refrigerant branch kits................................... 19
14.2 Connecting the refrigerant piping ............................................... 19
14.2.1 About connecting the refrigerant piping ....................... 19
14.2.2 Precautions when connecting the refrigerant piping.... 19
14.2.3 Guidelines when connecting the refrigerant piping...... 19
14.2.4 Pipe bending guidelines............................................... 20
14.2.5 To flare the pipe end.................................................... 20
14.2.6 To braze the pipe end.................................................. 20
14.2.7 Using the stop valve and service port.......................... 20
14.2.8 To connect the refrigerant piping to the outdoor unit ... 21
14.2.9 To connect the refrigerant branching kit ...................... 22
14.3 Checking the refrigerant piping .................................................. 22
14.3.1 About checking the refrigerant piping .......................... 22
14.3.2 Checking refrigerant piping: General guidelines.......... 23
14.3.3 Checking refrigerant piping: Setup............................... 23
14.3.4 To perform a leak test.................................................. 23
14.3.5 To perform vacuum drying........................................... 23
14.3.6 To insulate the refrigerant piping ................................. 24
14.4 Charging refrigerant ................................................................... 24
14.4.1 Precautions when charging refrigerant ........................ 24
14.4.2 To determine the additional refrigerant amount........... 24
14.4.3 To charge refrigerant ................................................... 24
14.4.4 Error codes when charging refrigerant......................... 25