Table of contents
Installer reference guide
2
ARXM50~71+RXM42~71N2V1B(9) + RXP50~71M2V1B +
RXA42+50+RXF50+60B2V1B + RXF71A2V1B + RXJ50N2V1B +
ARXF50~71A2V1B
R32 split series
4P513661-7H – 2019.12
Table of contents
1 General safety precautions 4
1.1 About the documentation .............................................................................................................................................. 4
1.1.1 Meaning of warnings and symbols ................................................................................................................ 4
1.2 For the installer............................................................................................................................................................... 5
1.2.1 General ........................................................................................................................................................... 5
1.2.2 Installation site ............................................................................................................................................... 6
1.2.3 Refrigerant...................................................................................................................................................... 9
1.2.4 Brine................................................................................................................................................................ 11
1.2.5 Water .............................................................................................................................................................. 11
1.2.6 Electrical ......................................................................................................................................................... 11
2 About the documentation 14
2.1 About this document ...................................................................................................................................................... 14
2.2 Installer reference guide at a glance .............................................................................................................................. 14
3 About the box 16
3.1 Overview: About the box ................................................................................................................................................ 16
3.2 Outdoor unit ................................................................................................................................................................... 16
3.2.1 To unpack the outdoor unit ........................................................................................................................... 16
3.2.2 To remove the accessories from the outdoor unit........................................................................................ 17
4 About the unit 19
4.1 Overview: About the unit ............................................................................................................................................... 19
4.2 Identification ................................................................................................................................................................... 19
4.2.1 Identification label: Outdoor unit .................................................................................................................. 19
5 Preparation 20
5.1 Overview: Preparation.................................................................................................................................................... 20
5.2 Preparing the installation site......................................................................................................................................... 20
5.2.1 Installation site requirements of the outdoor unit........................................................................................ 21
5.2.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 23
5.2.3 Refrigerant piping length and height difference ........................................................................................... 23
5.3 Preparing refrigerant piping ........................................................................................................................................... 24
5.3.1 Refrigerant piping requirements.................................................................................................................... 24
5.3.2 Refrigerant piping insulation.......................................................................................................................... 24
5.4 Preparing electrical wiring .............................................................................................................................................. 25
5.4.1 About preparing electrical wiring................................................................................................................... 25
6 Installation 26
6.1 Overview: Installation ..................................................................................................................................................... 26
6.2 Opening the unit ............................................................................................................................................................. 26
6.2.1 About opening the unit .................................................................................................................................. 26
6.2.2 To open the outdoor unit............................................................................................................................... 26
6.3 Mounting the outdoor unit............................................................................................................................................. 27
6.3.1 About mounting the outdoor unit ................................................................................................................. 27
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 ............................................................................................................................. 28
6.3.5 To provide drainage........................................................................................................................................ 28
6.3.6 To prevent the outdoor unit from falling over .............................................................................................. 29
6.4 Connecting the refrigerant piping .................................................................................................................................. 30
6.4.1 About connecting the refrigerant piping ....................................................................................................... 30
6.4.2 Precautions when connecting the refrigerant piping.................................................................................... 30
6.4.3 Guidelines when connecting the refrigerant piping...................................................................................... 31
6.4.4 Pipe bending guidelines ................................................................................................................................. 32
6.4.5 To flare the pipe end ...................................................................................................................................... 32
6.4.6 Using the stop valve and service port............................................................................................................ 33
6.4.7 To connect the refrigerant piping to the outdoor unit ................................................................................. 34
6.5 Checking the refrigerant piping...................................................................................................................................... 35
6.5.1 About checking the refrigerant piping........................................................................................................... 35
6.5.2 Precautions when checking the refrigerant piping........................................................................................ 35
6.5.3 To check for leaks ........................................................................................................................................... 36
6.5.4 To perform vacuum drying............................................................................................................................. 36
6.6 Charging refrigerant........................................................................................................................................................ 37
6.6.1 About charging refrigerant............................................................................................................................. 37
6.6.2 About the refrigerant ..................................................................................................................................... 38
