Table of Contents
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Table of contents
Table of contents
1.1
About the documentation ..........................................................
1.1.1
Meaning of warnings and symbols..............................
1.2
For the installer..........................................................................
1.2.1
General .......................................................................
1.2.2
Installation site ............................................................
1.2.3
Refrigerant - in case of R410A or R32 .....................
1.2.4
Water ..........................................................................
1.2.5
Electrical .....................................................................
2.1
About this document..................................................................
2.2
Installer reference guide at a glance .........................................
3.1
Overview: About the box ...........................................................
3.2
Outdoor unit...............................................................................
3.2.1
To unpack the outdoor unit .........................................
3.2.2
4.1
Overview: About the units and options......................................
4.2
Identification ..............................................................................
4.2.1
Identification label: Outdoor unit .................................
5.1
Overview: Preparation...............................................................
5.2
Preparing the installation site ....................................................
5.2.1
5.2.2
outdoor unit in cold climates ....................................... 10
5.2.3
Refrigerant piping length and height difference .......... 10
5.3
Preparing refrigerant piping....................................................... 11
5.3.1
Refrigerant piping requirements.................................. 11
5.3.2
Refrigerant piping insulation ....................................... 11
5.4
Preparing electrical wiring ......................................................... 11
5.4.1
About preparing electrical wiring................................. 11
6.1
Overview: Installation ................................................................ 11
6.2
Opening the units ...................................................................... 11
6.2.1
About opening the units .............................................. 11
6.2.2
To open the outdoor unit............................................. 12
6.3
Mounting the outdoor unit.......................................................... 12
6.3.1
About mounting the outdoor unit................................. 12
6.3.2
Precautions when mounting the outdoor unit.............. 12
6.3.3
To provide the installation structure ............................ 12
6.3.4
To install the outdoor unit............................................ 12
6.3.5
To provide drainage .................................................... 12
6.3.6
To prevent the outdoor unit from falling over .............. 13
6.4
Connecting the refrigerant piping .............................................. 13
6.4.1
About connecting the refrigerant piping ...................... 13
6.4.2
6.4.3
6.4.4
Pipe bending guidelines.............................................. 14
6.4.5
To flare the pipe end ................................................... 14
6.4.6
Using the stop valve and service port ......................... 14
6.4.7
6.5
Checking the refrigerant piping ................................................. 15
6.5.1
About checking the refrigerant piping ......................... 15
6.5.2
6.5.3
To check for leaks....................................................... 16
6.5.4
To perform vacuum drying .......................................... 16
6.6
Charging refrigerant .................................................................. 16
6.6.1
About charging refrigerant .......................................... 16
6.6.2
About the refrigerant ................................................... 17
Installer reference guide
2
6.6.3
Precautions when charging refrigerant ........................ 17
6.6.4
To determine the additional refrigerant amount ........... 17
6.6.5
To determine the complete recharge amount .............. 17
6.6.6
To charge additional refrigerant ................................... 17
6.6.7
To fix the fluorinated greenhouse gases label ............. 17
2
6.7
Connecting the electrical wiring.................................................. 18
2
6.7.1
About connecting the electrical wiring.......................... 18
3
6.7.2
3
6.7.3
Guidelines when connecting the electrical wiring ........ 18
3
6.7.4
Specifications of standard wiring components............. 19
3
6.7.5
5
6.8
Finishing the outdoor unit installation ......................................... 19
6
6.8.1
To finish the outdoor unit installation ........................... 19
6
6.8.2
To close the outdoor unit ............................................. 19
7
6.9
About the compressor ................................................................ 20
7
7
7.1
Overview: Commissioning.......................................................... 20
7.2
Precautions when commissioning .............................................. 20
7
7.3
Checklist before commissioning................................................. 20
7
7.4
Checklist during commissioning ................................................. 20
8
7.5
To perform a test run.................................................................. 20
8
7.6
Starting up the outdoor unit ........................................................ 21
8
8
8.1
Facility setting............................................................................. 21
8
8.2
To set the facility mode .............................................................. 21
8
9
9
9
10.1
Overview: Maintenance and service .......................................... 21
9
10.2
Maintenance safety precautions................................................. 21
9
10.3
Checklist for yearly maintenance of the outdoor unit ................. 21
11.1
Overview: Troubleshooting......................................................... 21
11.2
Precautions when troubleshooting ............................................. 22
11.3
Solving problems based on symptoms....................................... 22
11.3.1
11.3.2
expected ...................................................................... 22
11.3.3
Symptom: Water leakage............................................. 22
11
11.3.4
Symptom: Electrical leakage........................................ 22
11.3.5
11.4
Fault diagnosis using LED on outdoor unit PCB ........................ 22
12.1
Overview: Disposal..................................................................... 22
12.2
To pump down............................................................................ 22
12.3
To start and stop forced cooling ................................................. 23
12.3.1
ON/OFF switch ............................................................ 23
12.3.2
user interface ............................................................... 23
13.1
Wiring diagram ........................................................................... 24
1
General safety precautions
1.1
About the documentation
▪ The original documentation is written in English. All other
languages are translations.
▪ The precautions described in this document cover very important
topics, follow them carefully.
20
21
21
21
21
22
24
25
ARXM25+35R5V1B RXM20~35R5V1B
R32 Split Series
4P519439-8H - 2020.07
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Troubleshooting
