Daikin RXYSQ4T8VB Series Installer And User Reference Manual page 3

RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B - 2020.10
11.2.6 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 42
11.2.7 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 42
11.2.8 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 43
11.2.9 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 43
11.2.10 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 43
11.2.11 Symptom: Noise of air conditioners (Outdoor unit)...................................................................................... 43
11.2.12 Symptom: Dust comes out of the unit........................................................................................................... 43
11.2.13 Symptom: The units can give off odours ....................................................................................................... 43
11.2.14 Symptom: The outdoor unit fan does not spin.............................................................................................. 43
11.2.15 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ................. 44
11.2.16 Symptom: The inside of an outdoor unit is warm even when the unit has stopped.................................... 44
11.2.17 Symptom: Hot air can be felt when the indoor unit is stopped.................................................................... 44
12 Relocation
13 Disposal
14 Technical data
14.1 Information requirements for Eco Design...................................................................................................................... 47
For the installer
15 About the box
15.1 About LOOP BY DAIKIN ................................................................................................................................................... 49
15.2 Overview: About the box ................................................................................................................................................ 49
15.3 Outdoor unit ................................................................................................................................................................... 50
15.3.1 To unpack the outdoor unit ........................................................................................................................... 50
15.3.2 To handle the outdoor unit ............................................................................................................................ 50
15.3.3 To remove the accessories from the outdoor unit........................................................................................ 51
16 About the units and options
16.1 Overview: About the units and options.......................................................................................................................... 52
16.2 Identification ................................................................................................................................................................... 52
16.2.1 Identification label: Outdoor unit .................................................................................................................. 52
16.3 About the outdoor unit................................................................................................................................................... 53
16.4 System layout.................................................................................................................................................................. 53
16.5 Combining units and options.......................................................................................................................................... 54
16.5.1 About combining units and options............................................................................................................... 54
16.5.2 Possible combinations of indoor units........................................................................................................... 54
16.5.3 Possible options for the outdoor unit ............................................................................................................ 54
17 Unit installation
17.1 Preparing the installation site......................................................................................................................................... 56
17.1.1 Installation site requirements of the outdoor unit........................................................................................ 56
17.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 59
17.1.3 Securing safety against refrigerant leaks ....................................................................................................... 60
17.2 Opening and closing the unit.......................................................................................................................................... 61
17.2.1 About opening the units................................................................................................................................. 61
17.2.2 To open the outdoor unit............................................................................................................................... 62
17.2.3 To close the outdoor unit............................................................................................................................... 62
17.3 Mounting the outdoor unit............................................................................................................................................. 63
17.3.1 About mounting the outdoor unit ................................................................................................................. 63
17.3.2 Precautions when mounting the outdoor unit .............................................................................................. 63
17.3.3 To provide the installation structure ............................................................................................................. 63
17.3.4 To install the outdoor unit ............................................................................................................................. 64
17.3.5 To provide drainage........................................................................................................................................ 64
17.3.6 To prevent the outdoor unit from falling over .............................................................................................. 65
18 Piping installation
18.1 Preparing refrigerant piping ........................................................................................................................................... 66
18.1.1 Refrigerant piping requirements.................................................................................................................... 66
18.1.2 Refrigerant piping material ............................................................................................................................ 67
18.1.3 To select the piping size ................................................................................................................................. 67
18.1.4 To select refrigerant branch kits .................................................................................................................... 69
18.1.5 Refrigerant piping length and height difference ........................................................................................... 70
18.2 Connecting the refrigerant piping .................................................................................................................................. 71
18.2.1 About connecting the refrigerant piping ....................................................................................................... 71
18.2.2 Precautions when connecting the refrigerant piping.................................................................................... 72
18.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 72
18.2.4 Pipe bending guidelines ................................................................................................................................. 73
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Installer and user reference guide
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