Daikin FDA125A5VEB - Page 3

Table of Contents
Installer and user reference guide
3
FDA125A5VEB
Split system air conditioners
4P495031-1B – 2022.10
15 About the units and options 46
15.1 Identification ................................................................................................................................................................... 46
15.1.1 Identification label: Indoor unit ..................................................................................................................... 46
15.2 About the indoor unit ..................................................................................................................................................... 46
15.3 System layout.................................................................................................................................................................. 47
15.4 Combining units and options.......................................................................................................................................... 47
15.4.1 Possible options for the indoor unit............................................................................................................... 48
16 Unit installation 49
16.1 Preparing the installation site......................................................................................................................................... 49
16.1.1 Installation site requirements of the indoor unit .......................................................................................... 49
16.2 Mounting the indoor unit ............................................................................................................................................... 51
16.2.1 Guidelines when installing the indoor unit.................................................................................................... 51
16.2.2 Guidelines when installing the ducting.......................................................................................................... 54
16.2.3 Guidelines when installing the drain piping................................................................................................... 55
17 Piping installation 59
17.1 Preparing refrigerant piping ........................................................................................................................................... 59
17.1.1 Refrigerant piping requirements.................................................................................................................... 59
17.1.2 Refrigerant piping insulation.......................................................................................................................... 60
17.2 Connecting the refrigerant piping .................................................................................................................................. 60
17.2.1 About connecting the refrigerant piping ....................................................................................................... 60
17.2.2 Precautions when connecting the refrigerant piping.................................................................................... 60
17.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 61
17.2.4 Pipe bending guidelines ................................................................................................................................. 62
17.2.5 To flare the pipe end ...................................................................................................................................... 62
17.2.6 To connect the refrigerant piping to the indoor unit .................................................................................... 63
18 Electrical installation 64
18.1 About connecting the electrical wiring .......................................................................................................................... 64
18.1.1 Precautions when connecting the electrical wiring....................................................................................... 64
18.1.2 Guidelines when connecting the electrical wiring......................................................................................... 65
18.1.3 Specifications of standard wiring components.............................................................................................. 67
18.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 67
19 Commissioning 71
19.1 Overview: Commissioning .............................................................................................................................................. 71
19.2 Precautions when commissioning .................................................................................................................................. 71
19.3 Checklist before commissioning ..................................................................................................................................... 71
19.4 To perform a test run...................................................................................................................................................... 72
20 Configuration 73
20.1 Field setting..................................................................................................................................................................... 73
21 Hand-over to the user 75
22 Troubleshooting 76
22.1 Solving problems based on error codes ......................................................................................................................... 76
22.1.1 Error codes: Overview .................................................................................................................................... 76
23 Disposal 77
24 Technical data 78
24.1 Wiring diagram................................................................................................................................................................ 78
24.1.1 Unified wiring diagram legend ....................................................................................................................... 78
25 Glossary 81