Daikin FXFN50A2VEB Installer And User Reference Manual page 3

FXFN50~112A2VEB
CO₂ Conveni-Pack: indoor unit
4P677925-1 - 2021.07
For the installer
14 About the box
14.1 Indoor unit ...................................................................................................................................................................... 42
14.1.1 To unpack and handle the unit ...................................................................................................................... 42
14.1.2 To remove the accessories from the indoor unit .......................................................................................... 42
15 About the units and options
15.1 Identification ................................................................................................................................................................... 44
15.1.1 Identification label: Indoor unit ..................................................................................................................... 44
15.2 About the indoor unit ..................................................................................................................................................... 44
15.3 System layout.................................................................................................................................................................. 44
15.4 Combining units and options.......................................................................................................................................... 45
15.4.1 Possible options for the indoor unit............................................................................................................... 46
16 Unit installation
16.1 Preparing the installation site......................................................................................................................................... 47
16.1.1 Installation site requirements of the indoor unit .......................................................................................... 47
16.1.2 Additional installation site requirements for CO₂ refrigerant ....................................................................... 50
16.2 Mounting the indoor unit ............................................................................................................................................... 54
16.2.1 Guidelines when installing the indoor unit.................................................................................................... 54
16.2.2 Guidelines when installing the drain piping................................................................................................... 57
17 Piping installation
17.1 Preparing refrigerant piping ........................................................................................................................................... 61
17.1.1 Refrigerant piping requirements.................................................................................................................... 61
17.1.2 Refrigerant piping insulation.......................................................................................................................... 62
17.2 Connecting the refrigerant piping .................................................................................................................................. 62
17.2.1 About connecting the refrigerant piping ....................................................................................................... 62
17.2.2 Precautions when connecting the refrigerant piping.................................................................................... 63
17.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 63
17.2.4 To connect the refrigerant piping to the indoor unit .................................................................................... 64
18 Electrical installation
18.1 About connecting the electrical wiring .......................................................................................................................... 66
18.1.1 Precautions when connecting the electrical wiring....................................................................................... 66
18.1.2 Guidelines when connecting the electrical wiring......................................................................................... 67
18.1.3 Specifications of standard wiring components.............................................................................................. 68
18.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 69
18.3 To connect appropriate measures for appliances filled with CO₂ ................................................................................. 71
19 Commissioning
19.1 Overview: Commissioning .............................................................................................................................................. 72
19.2 Precautions when commissioning .................................................................................................................................. 72
19.3 Checklist before commissioning..................................................................................................................................... 73
19.4 To perform a test run...................................................................................................................................................... 73
20 Configuration
20.1 Field setting..................................................................................................................................................................... 74
21 Hand-over to the user
22 Troubleshooting
22.1 Solving problems based on error codes ......................................................................................................................... 79
22.1.1 Error codes: Overview .................................................................................................................................... 79
23 Disposal
24 Technical data
24.1 Wiring diagram................................................................................................................................................................ 81
24.1.1 Unified wiring diagram legend ....................................................................................................................... 81
25 Glossary
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Installer and user reference guide
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