Table of Contents
Installer reference guide
2
CTXA15+FTXA25~50(A)(B)2V1B(W)(S)(T)(B)
Daikin room air conditioner
4P518023-3K – 2022.05
Table of Contents
1 About the documentation 4
1.1 About this document ...................................................................................................................................................... 4
1.1.1 Meaning of warnings and symbols ................................................................................................................ 5
2 General safety precautions 7
2.1 For the installer............................................................................................................................................................... 7
2.1.1 General ........................................................................................................................................................... 7
2.1.2 Installation site ............................................................................................................................................... 8
2.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 11
2.1.4 Electrical ......................................................................................................................................................... 12
3 Specific installer safety instructions 15
4 About the box 17
4.1 Indoor unit ...................................................................................................................................................................... 17
4.1.1 To unpack the indoor unit.............................................................................................................................. 17
4.1.2 To remove the accessories from the indoor unit .......................................................................................... 17
5 About the unit 19
5.1 System layout.................................................................................................................................................................. 19
5.2 Operation range.............................................................................................................................................................. 19
5.3 About the wireless LAN................................................................................................................................................... 20
5.3.1 Precautions when using the wireless LAN ..................................................................................................... 20
5.3.2 Basic parameters ............................................................................................................................................ 20
5.3.3 Setting the wireless LAN................................................................................................................................. 20
6 Unit installation 22
6.1 Preparing the installation site......................................................................................................................................... 22
6.1.1 Installation site requirements of the indoor unit .......................................................................................... 22
6.2 Opening the unit ............................................................................................................................................................. 24
6.2.1 To open the front panel ................................................................................................................................. 24
6.2.2 To remove the front panel ............................................................................................................................. 24
6.2.3 To open the service cover .............................................................................................................................. 25
6.2.4 To remove the front grille .............................................................................................................................. 25
6.2.5 To remove the electrical wiring box cover..................................................................................................... 26
6.3 Mounting the indoor unit ............................................................................................................................................... 27
6.3.1 To install the mounting plate ......................................................................................................................... 27
6.3.2 To drill a wall hole........................................................................................................................................... 28
6.3.3 To remove the pipe port cover ...................................................................................................................... 29
6.4 Connecting the drain piping ........................................................................................................................................... 29
6.4.1 General guidelines.......................................................................................................................................... 29
6.4.2 To connect the piping on right side, right-back, or right-bottom ................................................................. 30
6.4.3 To connect the piping on left side, left-back, or left-bottom........................................................................ 31
6.4.4 To check for water leaks................................................................................................................................. 32
7 Piping installation 33
7.1 Preparing refrigerant piping ........................................................................................................................................... 33
7.1.1 Refrigerant piping requirements.................................................................................................................... 33
7.1.2 Refrigerant piping insulation.......................................................................................................................... 34
7.2 Connecting the refrigerant piping .................................................................................................................................. 34
7.2.1 About connecting the refrigerant piping ....................................................................................................... 34
7.2.2 Precautions when connecting the refrigerant piping.................................................................................... 34
7.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 35
7.2.4 Pipe bending guidelines ................................................................................................................................. 36
7.2.5 To flare the pipe end ...................................................................................................................................... 36
7.2.6 To connect the refrigerant piping to the indoor unit .................................................................................... 37
8 Electrical installation 38
8.1 About connecting the electrical wiring .......................................................................................................................... 38
8.1.1 Precautions when connecting the electrical wiring....................................................................................... 38
8.1.2 Guidelines when connecting the electrical wiring......................................................................................... 39
8.1.3 Specifications of standard wiring components.............................................................................................. 40
8.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 40
8.3 To connect optional accessories (wired user interface, central user interface, etc.) ................................................... 42
9 Finishing the indoor unit installation 43
9.1 To insulate the drain piping, refrigerant piping and interconnection cable.................................................................. 43
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