Table of contents
Installer reference guide
2
RZAG35~60A2V1B
R32 split series
4P540076-1A – 2018.11
Table of contents
1 General safety precautions 3
1.1 About the documentation .......................................................... 3
1.1.1 Meaning of warnings and symbols.............................. 3
1.2 For the installer.......................................................................... 3
1.2.1 General ....................................................................... 3
1.2.2 Installation site ............................................................ 3
1.2.3 Refrigerant .................................................................. 5
1.2.4 Brine............................................................................ 6
1.2.5 Water .......................................................................... 6
1.2.6 Electrical ..................................................................... 6
2 About the documentation 7
2.1 About this document.................................................................. 7
2.2 Installer reference guide at a glance ......................................... 7
3 About the box 7
3.1 Overview: About the box ........................................................... 7
3.2 Outdoor unit............................................................................... 7
3.2.1 To unpack the outdoor unit ......................................... 7
3.2.2 To remove the accessories from the outdoor unit....... 8
4 About the unit 8
4.1 Overview: About the unit ........................................................... 8
4.2 Identification .............................................................................. 8
4.2.1 Identification label: Outdoor unit ................................. 8
5 Preparation 8
5.1 Overview: Preparation............................................................... 8
5.2 Preparing the installation site .................................................... 8
5.2.1 Installation site requirements of the outdoor unit ........ 9
5.2.2 Additional installation site requirements of the
outdoor unit in cold climates ....................................... 10
5.2.3 Refrigerant piping length and height difference .......... 10
5.3 Preparing refrigerant piping ....................................................... 10
5.3.1 Refrigerant piping requirements.................................. 10
5.3.2 Refrigerant piping insulation ....................................... 10
5.4 Preparing electrical wiring ......................................................... 11
5.4.1 About preparing electrical wiring................................. 11
6 Installation 11
6.1 Overview: Installation ................................................................ 11
6.2 Opening the unit ........................................................................ 11
6.2.1 About opening the units .............................................. 11
6.2.2 To open the outdoor unit............................................. 11
6.3 Mounting the outdoor unit.......................................................... 11
6.3.1 About mounting the outdoor unit................................. 11
6.3.2 Precautions when mounting the outdoor unit.............. 11
6.3.3 To provide the installation structure............................ 11
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 .............. 12
6.4 Connecting the refrigerant piping .............................................. 13
6.4.1 About connecting the refrigerant piping ...................... 13
6.4.2 Precautions when connecting the refrigerant piping... 13
6.4.3 Guidelines when connecting the refrigerant piping ..... 13
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 Connections between outdoor and indoor unit using
reducers ...................................................................... 15
6.4.8 To connect the refrigerant piping to the outdoor unit .. 15
6.5 Checking the refrigerant piping ................................................. 15
6.5.1 About checking the refrigerant piping ......................... 15
6.5.2 Precautions when checking the refrigerant piping ...... 15
6.5.3 To check for leaks....................................................... 15
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
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
6.7 Connecting the electrical wiring.................................................. 18
6.7.1 About connecting the electrical wiring.......................... 18
6.7.2 Precautions when connecting the electrical wiring ...... 18
6.7.3 Guidelines when connecting the electrical wiring ........ 18
6.7.4 Specifications of standard wiring components............. 19
6.7.5 To connect the electrical wiring on the outdoor unit..... 19
6.8 Finishing the outdoor unit installation ......................................... 19
6.8.1 To finish the outdoor unit installation ........................... 19
6.8.2 To close the outdoor unit ............................................. 19
6.9 About the compressor ................................................................ 20
7 Configuration 20
7.1 Standby electricity saving function ............................................. 20
7.1.1 About the standby electricity saving function............... 20
7.1.2 To turn on standby electricity saving function.............. 20
8 Commissioning 20
8.1 Overview: Commissioning.......................................................... 20
8.2 Precautions when commissioning .............................................. 20
8.3 Checklist before commissioning................................................. 20
8.4 Checklist during commissioning ................................................. 21
8.5 To perform a test run.................................................................. 21
8.6 Starting up the outdoor unit ........................................................ 21
9 Hand-over to the user 21
10 Maintenance and service 21
10.1 Overview: Maintenance and service .......................................... 21
10.2 Maintenance safety precautions................................................. 21
10.3 Checklist for yearly maintenance of the outdoor unit ................. 21
11 Troubleshooting 22
11.1 Overview: Troubleshooting......................................................... 22
11.2 Precautions when troubleshooting ............................................. 22
11.3 Solving problems based on symptoms....................................... 22
11.3.1 Symptom: Indoor units fall, vibrate or make noise ....... 22
11.3.2 Symptom: The unit is NOT heating or cooling as
expected ...................................................................... 22
11.3.3 Symptom: Water leakage............................................. 22
11.3.4 Symptom: Electrical leakage........................................ 22
11.3.5 Symptom: Unit does NOT function or burn damage.... 22
11.3.6 Symptom: Indoor unit is running only with fixed fan
speed, not possible to change fan speed .................... 22
11.3.7 Symptom: Unit goes to defrost operation even when
the heat exchanger is not frozen.................................. 22
11.4 Fault diagnosis using LED on outdoor unit PCB ........................ 22
12 Disposal 23
12.1 Overview: Disposal..................................................................... 23
12.2 To pump down............................................................................ 23
12.3 To start and stop forced cooling ................................................. 23
12.3.1 To start/stop forced cooling using the indoor unit ON/
OFF switch................................................................... 23
12.3.2 To start/stop forced cooling using the indoor unit
user interface ............................................................... 23
13 Technical data 24
13.1 Wiring diagram ........................................................................... 24
13.2 Piping diagram ........................................................................... 25
13.2.1 Piping diagram: Outdoor unit ....................................... 25
14 Glossary 26
