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Installer reference guide
2
Table of contents
1.1
About this document ......................................................................................................................................................
1.2
Installer reference guide at a glance ..............................................................................................................................
2.1
About the documentation ..............................................................................................................................................
2.1.1
Meaning of warnings and symbols ................................................................................................................
2.2
For the installer ...............................................................................................................................................................
2.2.1
General ...........................................................................................................................................................
2.2.2
Installation site ...............................................................................................................................................
2.2.3
Refrigerant - in case of R410A or R32.......................................................................................................... 11
2.2.4
Electrical ......................................................................................................................................................... 13
4.1
Overview: About the box ................................................................................................................................................ 21
4.2
Indoor unit ...................................................................................................................................................................... 21
4.2.1
To unpack the indoor unit.............................................................................................................................. 21
4.2.2
To remove the accessories from the indoor unit .......................................................................................... 22
5.1
System layout.................................................................................................................................................................. 23
5.2
Operation range.............................................................................................................................................................. 23
6.1
Preparing the installation site......................................................................................................................................... 24
6.1.1
Installation site requirements of the indoor unit .......................................................................................... 24
6.2
Opening the indoor unit ................................................................................................................................................. 25
6.2.1
To remove the front panel ............................................................................................................................. 25
6.2.2
To re-install the front panel ........................................................................................................................... 26
6.2.3
To remove the front grille .............................................................................................................................. 26
6.2.4
To re-install the front grille ............................................................................................................................ 27
6.2.5
To remove the electrical wiring box cover..................................................................................................... 27
6.2.6
To open the service cover .............................................................................................................................. 27
6.3
Installing the indoor unit ................................................................................................................................................ 28
6.3.1
Precautions when installing the indoor unit.................................................................................................. 28
6.3.2
To install the mounting plate ......................................................................................................................... 28
6.3.3
To drill a wall hole........................................................................................................................................... 28
6.3.4
To remove the pipe port cover ...................................................................................................................... 29
6.3.5
To provide drainage........................................................................................................................................ 29
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
8.1
Connecting the electrical wiring..................................................................................................................................... 38
8.1.1
About connecting the electrical wiring .......................................................................................................... 38
8.1.2
Precautions when connecting the electrical wiring....................................................................................... 38
8.1.3
Guidelines when connecting the electrical wiring......................................................................................... 39
8.1.4
Specifications of standard wiring components.............................................................................................. 40
8.1.5
To connect the electrical wiring to the indoor unit....................................................................................... 40
9.1
To insulate the drain piping, refrigerant piping and interconnection cable.................................................................. 42
9.2
To pass the pipes through the wall hole ........................................................................................................................ 42
9.3
To fix the unit on the mounting plate ............................................................................................................................ 43
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FTXF20~42D5V1B + ATXF20~42D5V1B
Daikin room air conditioner
4P519439-16R - 2021.12
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