Daikin VRV 5 RXYA8A7Y1B Installer And User Manual page 3

RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 - 2023.12
10.2.6 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 49
10.2.7 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 49
10.2.8 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 49
10.2.9 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 49
10.2.10 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 50
10.2.11 Symptom: Noise of air conditioners (Outdoor unit)...................................................................................... 50
10.2.12 Symptom: Dust comes out of the unit........................................................................................................... 50
10.2.13 Symptom: The units can give off odours ....................................................................................................... 50
10.2.14 Symptom: The outdoor unit fan does not spin.............................................................................................. 50
10.2.15 Symptom: The display shows "88"................................................................................................................. 50
10.2.16 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ................. 50
10.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped.................................... 50
10.2.18 Symptom: Hot air can be felt when the indoor unit is stopped.................................................................... 50
11 Relocation
12 Disposal
13 Technical data
13.1 Eco Design requirements................................................................................................................................................ 53
For the installer
14 About the box
14.1 To unpack the outdoor unit............................................................................................................................................ 56
14.2 To remove the accessories from the outdoor unit ........................................................................................................ 56
14.3 Accessory pipes: Diameters............................................................................................................................................ 57
14.4 To remove the transportation stay (only for 5~12 HP).................................................................................................. 57
15 About the units and options
15.1 Identification label: Outdoor unit................................................................................................................................... 59
15.2 About the outdoor unit................................................................................................................................................... 60
15.3 System layout.................................................................................................................................................................. 60
15.4 Combining units and options.......................................................................................................................................... 61
15.4.1 About combining units and options............................................................................................................... 61
15.4.2 Possible combinations of indoor units........................................................................................................... 61
15.4.3 Possible combinations of outdoor units ........................................................................................................ 62
15.4.4 Possible options for the outdoor unit ............................................................................................................ 62
15.5 About the piping connections ........................................................................................................................................ 64
16 Special requirements for R32 units
16.1 Installation space requirements ..................................................................................................................................... 65
16.2 System layout requirements........................................................................................................................................... 65
16.3 To determine the required safety measures ................................................................................................................. 68
16.3.1 Overview: flowchart ....................................................................................................................................... 72
16.4 Safety measures.............................................................................................................................................................. 72
16.4.1 No safety measure.......................................................................................................................................... 72
16.4.2 Alarm............................................................................................................................................................... 73
16.4.3 Natural ventilation.......................................................................................................................................... 74
16.4.4 Shut-off valves ................................................................................................................................................ 77
16.4.5 Overview: flowchart ....................................................................................................................................... 80
16.5 Combinations of safety measures .................................................................................................................................. 81
17 Unit installation
17.1 Preparing the installation site......................................................................................................................................... 82
17.1.1 Installation site requirements of the outdoor unit........................................................................................ 82
17.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 85
17.2 Opening the unit ............................................................................................................................................................. 87
17.2.1 About opening the units................................................................................................................................. 87
17.2.2 To open the outdoor unit............................................................................................................................... 87
17.2.3 To open the switch box of the outdoor unit.................................................................................................. 87
17.3 Mounting the outdoor unit............................................................................................................................................. 88
17.3.1 To provide the installation structure ............................................................................................................. 88
17.3.2 To install the outdoor unit ............................................................................................................................. 89
18 Piping installation
18.1 Preparing refrigerant piping ........................................................................................................................................... 90
18.1.1 Refrigerant piping requirements.................................................................................................................... 90
18.1.2 Refrigerant piping material ............................................................................................................................ 91
18.1.3 Refrigerant piping insulation.......................................................................................................................... 91
Table of contents
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Installer and user reference guide
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