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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 ................................................................................................................................................ 18
4.2
Outdoor unit ................................................................................................................................................................... 18
4.2.1
To unpack the outdoor unit ........................................................................................................................... 18
4.2.2
To remove the accessories from the outdoor unit........................................................................................ 19
5.1
Overview: About the units and options.......................................................................................................................... 21
5.2
Identification ................................................................................................................................................................... 21
5.2.1
Identification label: Outdoor unit .................................................................................................................. 21
6.1
Preparing the installation site......................................................................................................................................... 22
6.1.1
Installation site requirements of the outdoor unit........................................................................................ 23
6.1.2
Additional installation site requirements of the outdoor unit in cold climates............................................ 25
6.2
Opening the units ........................................................................................................................................................... 26
6.2.1
About opening the units................................................................................................................................. 26
6.2.2
To open the outdoor unit............................................................................................................................... 26
6.3
Mounting the outdoor unit............................................................................................................................................. 26
6.3.1
About mounting the outdoor unit ................................................................................................................. 26
6.3.2
Precautions when mounting the outdoor unit .............................................................................................. 27
6.3.3
To provide the installation structure ............................................................................................................. 27
6.3.4
To install the outdoor unit ............................................................................................................................. 27
6.3.5
To provide drainage........................................................................................................................................ 28
6.3.6
To prevent the outdoor unit from falling over .............................................................................................. 28
7.1
Preparing refrigerant piping ........................................................................................................................................... 30
7.1.1
Refrigerant piping requirements.................................................................................................................... 30
7.1.2
Refrigerant piping length and height difference ........................................................................................... 30
7.1.3
Refrigerant piping insulation.......................................................................................................................... 31
7.2
Connecting the refrigerant piping .................................................................................................................................. 31
7.2.1
About connecting the refrigerant piping ....................................................................................................... 31
7.2.2
Precautions when connecting the refrigerant piping.................................................................................... 31
7.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 33
7.2.4
Pipe bending guidelines ................................................................................................................................. 33
7.2.5
To flare the pipe end ...................................................................................................................................... 33
7.2.6
Using the stop valve and service port............................................................................................................ 34
7.2.7
To connect the refrigerant piping to the outdoor unit ................................................................................. 36
7.3
Checking the refrigerant piping...................................................................................................................................... 36
7.3.1
About checking the refrigerant piping ........................................................................................................... 36
7.3.2
Precautions when checking the refrigerant piping........................................................................................ 37
7.3.3
To check for leaks ........................................................................................................................................... 37
7.3.4
To perform vacuum drying............................................................................................................................. 37
7.4
Charging refrigerant........................................................................................................................................................ 39
7.4.1
About charging refrigerant............................................................................................................................. 39
7.4.2
About the refrigerant ..................................................................................................................................... 40
7.4.3
To determine the additional refrigerant amount .......................................................................................... 40
7.4.4
To determine the complete recharge amount .............................................................................................. 41
7.4.5
To charge additional refrigerant .................................................................................................................... 41
7.4.6
To fix the fluorinated greenhouse gases label............................................................................................... 41
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30
(A)RXF20~42C5V1B
R32 split series
4P519439-10J - 2021.06
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