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Table of contents
Installer reference guide
2
Table of contents
1.1
About this document ......................................................................................................................................................
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.......................................................................................................... 10
2.2.4
Electrical ......................................................................................................................................................... 12
4.1
Overview: About the box ................................................................................................................................................ 21
4.2
Outdoor unit ................................................................................................................................................................... 21
4.2.1
To unpack the outdoor unit ........................................................................................................................... 21
4.2.2
To remove the accessories from the outdoor unit........................................................................................ 23
5.1
Overview: About the unit ............................................................................................................................................... 25
5.2
Identification ................................................................................................................................................................... 25
5.2.1
Identification label: Outdoor unit .................................................................................................................. 25
6.1
Preparing the installation site......................................................................................................................................... 26
6.1.1
Installation site requirements of the outdoor unit........................................................................................ 27
6.1.2
Additional installation site requirements of the outdoor unit in cold climates............................................ 29
6.2
Opening and closing the unit.......................................................................................................................................... 30
6.2.1
About opening the units................................................................................................................................. 30
6.2.2
To open the outdoor unit............................................................................................................................... 30
6.2.3
To close the outdoor unit............................................................................................................................... 30
6.3
Mounting the outdoor unit............................................................................................................................................. 31
6.3.1
About mounting the outdoor unit ................................................................................................................. 31
6.3.2
Precautions when mounting the outdoor unit .............................................................................................. 31
6.3.3
To provide the installation structure ............................................................................................................. 31
6.3.4
To install the outdoor unit ............................................................................................................................. 32
6.3.5
To provide drainage........................................................................................................................................ 32
6.3.6
To prevent the outdoor unit from falling over .............................................................................................. 33
7.1
Preparing refrigerant piping ........................................................................................................................................... 35
7.1.1
Refrigerant piping requirements.................................................................................................................... 35
7.1.2
Refrigerant piping insulation.......................................................................................................................... 36
7.1.3
Refrigerant piping length and height difference ........................................................................................... 36
7.2
Connecting the refrigerant piping .................................................................................................................................. 36
7.2.1
About connecting the refrigerant piping ....................................................................................................... 36
7.2.2
Precautions when connecting the refrigerant piping.................................................................................... 37
7.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 38
7.2.4
Pipe bending guidelines ................................................................................................................................. 38
7.2.5
To flare the pipe end ...................................................................................................................................... 39
7.2.6
Using the stop valve and service port............................................................................................................ 39
7.2.7
To connect the refrigerant piping to the outdoor unit ................................................................................. 41
7.3
Checking the refrigerant piping...................................................................................................................................... 41
7.3.1
About checking the refrigerant piping ........................................................................................................... 41
7.3.2
Precautions when checking the refrigerant piping........................................................................................ 42
7.3.3
To check for leaks ........................................................................................................................................... 42
7.3.4
To perform vacuum drying............................................................................................................................. 43
8.1
About charging refrigerant ............................................................................................................................................. 45
8.2
About the refrigerant...................................................................................................................................................... 46
8.3
Precautions when charging refrigerant.......................................................................................................................... 47
8.4
To determine the additional refrigerant amount .......................................................................................................... 47
8.5
To determine the complete recharge amount .............................................................................................................. 47
8.6
To charge additional refrigerant..................................................................................................................................... 47
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5
5
6
6
7
15
21
25
26
35
45
RXF50~71D5V1B
R32 split series
4P519439-15Q - 2021.10
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