Table of contents
Installer reference guide
2
CVXM-A, FVXM-A, CVXM-A9, FVXM-A9, FVXTM-A
Split system air conditioners
4P625991-1F – 2022.09
Table of contents
1 About the documentation 4
1.1 About this document ...................................................................................................................................................... 4
2 General safety precautions 6
2.1 About the documentation .............................................................................................................................................. 6
2.1.1 Meaning of warnings and symbols ................................................................................................................ 6
2.2 For the installer............................................................................................................................................................... 7
2.2.1 General ........................................................................................................................................................... 7
2.2.2 Installation site ............................................................................................................................................... 8
2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 10
2.2.4 Electrical ......................................................................................................................................................... 12
3 Specific installer safety instructions 14
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 ............................................................................................................................................................. 26
6.2.1 To remove the front panel ............................................................................................................................. 26
6.2.2 To remove the front grille .............................................................................................................................. 26
6.2.3 To open the terminal block and remove the electrical wiring box cover ..................................................... 27
6.3 Mounting the indoor unit ............................................................................................................................................... 28
6.3.1 To install the indoor unit ................................................................................................................................ 28
6.3.2 To drill a wall hole........................................................................................................................................... 32
6.3.3 To remove the slit portions............................................................................................................................ 32
6.4 Connecting the drain piping ........................................................................................................................................... 33
6.4.1 General guidelines.......................................................................................................................................... 33
6.4.2 To connect the drain piping to the indoor unit ............................................................................................. 34
6.4.3 To check for water leaks................................................................................................................................. 35
6.5 Mounting the user interface........................................................................................................................................... 35
6.5.1 To mount the wireless remote control holder .............................................................................................. 35
7 Piping installation 37
7.1 Preparing refrigerant piping ........................................................................................................................................... 37
7.1.1 Refrigerant piping requirements.................................................................................................................... 37
7.1.2 Refrigerant piping insulation.......................................................................................................................... 38
7.2 Connecting the refrigerant piping .................................................................................................................................. 38
7.2.1 About connecting the refrigerant piping ....................................................................................................... 38
7.2.2 Precautions when connecting the refrigerant piping.................................................................................... 39
7.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 40
7.2.4 Pipe bending guidelines ................................................................................................................................. 40
7.2.5 To flare the pipe end ...................................................................................................................................... 40
7.2.6 To connect the refrigerant piping to the indoor unit .................................................................................... 41
8 Electrical installation 43
8.1 About connecting the electrical wiring .......................................................................................................................... 43
8.1.1 Precautions when connecting the electrical wiring....................................................................................... 43
8.1.2 Guidelines when connecting the electrical wiring......................................................................................... 44
8.1.3 Specifications of standard wiring components.............................................................................................. 46
8.2 To connect the electrical wiring to the indoor unit ....................................................................................................... 46
8.3 To connect optional accessories (wired user interface, central user interface, wireless adapter, etc.) ...................... 47
9 Finishing the indoor unit installation 48
9.1 To finish the indoor unit installation .............................................................................................................................. 48
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