Table of contents
Installer reference guide
2
RXF50F5V1B
R32 split series
4P769827-16D – 2024.09
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 Brine ............................................................................................................................................................... 12
2.1.5 Water ............................................................................................................................................................. 13
2.1.6 Electrical......................................................................................................................................................... 13
2.1.7 Gas.................................................................................................................................................................. 15
2.1.8 Gas exhaust.................................................................................................................................................... 16
2.1.9 Local legislation.............................................................................................................................................. 16
3 Specific installer safety instructions 18
4 About the box 24
4.1 Outdoor unit................................................................................................................................................................... 24
4.1.1 To unpack the outdoor unit........................................................................................................................... 24
4.1.2 To handle the outdoor unit ........................................................................................................................... 24
4.1.3 To remove the accessories from the outdoor unit....................................................................................... 25
5 About the unit 26
5.1 Identification .................................................................................................................................................................. 26
5.1.1 Identification label: Outdoor unit.................................................................................................................. 26
6 Unit installation 27
6.1 Preparing the installation site ........................................................................................................................................ 27
6.1.1 Installation site requirements of the outdoor unit ....................................................................................... 28
6.1.2 Additional installation site requirements of the outdoor unit in cold climates ........................................... 30
6.2 Opening the unit ............................................................................................................................................................ 31
6.2.1 About opening the unit.................................................................................................................................. 31
6.2.2 To open the outdoor unit .............................................................................................................................. 31
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 ............................................................................................. 32
6.3.3 To provide the installation structure............................................................................................................. 32
6.3.4 To install the outdoor unit............................................................................................................................. 33
6.3.5 To provide drainage....................................................................................................................................... 33
6.3.6 To prevent the outdoor unit from falling over.............................................................................................. 34
7 Piping installation 36
7.1 Preparing refrigerant piping........................................................................................................................................... 36
7.1.1 Refrigerant piping requirements ................................................................................................................... 36
7.1.2 Refrigerant piping insulation ......................................................................................................................... 37
7.1.3 Refrigerant piping length and height difference........................................................................................... 37
7.2 Connecting the refrigerant piping.................................................................................................................................. 37
7.2.1 About connecting the refrigerant piping ...................................................................................................... 38
7.2.2 Precautions when connecting the refrigerant piping ................................................................................... 38
7.2.3 Guidelines when connecting the refrigerant piping ..................................................................................... 39
7.2.4 Pipe bending guidelines................................................................................................................................. 40
7.2.5 To flare the pipe end ..................................................................................................................................... 40
7.2.6 Using the stop valve and service port ........................................................................................................... 41
7.2.7 To connect the refrigerant piping to the outdoor unit................................................................................. 42
7.3 Checking the refrigerant piping ..................................................................................................................................... 43
7.3.1 About checking the refrigerant piping .......................................................................................................... 43
7.3.2 Precautions when checking the refrigerant piping....................................................................................... 43
7.3.3 To check for leaks .......................................................................................................................................... 44
7.3.4 To perform vacuum drying ............................................................................................................................ 44
8 Charging refrigerant 46
8.1 About charging refrigerant............................................................................................................................................. 46
8.2 About the refrigerant ..................................................................................................................................................... 47
8.3 Precautions when charging refrigerant ......................................................................................................................... 48
8.4 To determine the additional refrigerant amount.......................................................................................................... 48
