Table of contents
Installer and user reference guide
3
FXSA15~140A2VEB
VRV system air conditioner
4P599622-1 – 2020.05
For the installer 45
14 About the box 46
14.1 Overview: About the box ................................................................................................................................................ 46
14.2 Indoor unit ...................................................................................................................................................................... 46
14.2.1 To unpack and handle the unit ...................................................................................................................... 46
14.2.2 To remove the accessories from the indoor unit .......................................................................................... 47
15 About the units and options 48
15.1 Identification ................................................................................................................................................................... 48
15.1.1 Identification label: Indoor unit ..................................................................................................................... 48
15.2 About the indoor unit ..................................................................................................................................................... 48
15.3 System layout.................................................................................................................................................................. 48
15.4 Combining units and options.......................................................................................................................................... 49
15.4.1 Possible options for the indoor unit............................................................................................................... 49
16 Unit installation 51
16.1 Preparing the installation site......................................................................................................................................... 51
16.1.1 Installation site requirements of the indoor unit .......................................................................................... 51
16.2 Mounting the indoor unit ............................................................................................................................................... 54
16.2.1 Guidelines when installing the indoor unit.................................................................................................... 54
16.2.2 Guidelines when installing the ducting.......................................................................................................... 56
16.2.3 Guidelines when installing the drain piping................................................................................................... 57
17 Piping installation 61
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 Pipe bending guidelines ................................................................................................................................. 64
17.2.5 To flare the pipe end ...................................................................................................................................... 64
17.2.6 To connect the refrigerant piping to the indoor unit .................................................................................... 65
18 Electrical installation 67
18.1 About connecting the electrical wiring .......................................................................................................................... 67
18.1.1 Precautions when connecting the electrical wiring....................................................................................... 67
18.1.2 Guidelines when connecting the electrical wiring......................................................................................... 68
18.1.3 Specifications of standard wiring components.............................................................................................. 69
18.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 70
19 Commissioning 72
19.1 Overview: Commissioning .............................................................................................................................................. 72
19.2 Precautions when commissioning .................................................................................................................................. 72
19.3 Checklist before commissioning ..................................................................................................................................... 72
19.4 To perform a test run...................................................................................................................................................... 73
20 Configuration 74
20.1 Field setting..................................................................................................................................................................... 74
21 Hand-over to the user 79
22 Troubleshooting 80
22.1 Solving problems based on error codes ......................................................................................................................... 80
22.1.1 Error codes: Overview .................................................................................................................................... 80
23 Disposal 82
24 Technical data 83
24.1 Wiring diagram................................................................................................................................................................ 83
24.1.1 Unified wiring diagram legend ....................................................................................................................... 83
25 Glossary 86
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