Daikin ARXM25R5V1B9 Bruksanvisning

Daikin Inte kategoriserad ARXM25R5V1B9

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Installer reference guide

R32 Split system air conditioners

RXA20A5V1B9

RXA25A5V1B9

RXA35A5V1B9

RXM20R5V1B9

RXM25R5V1B9

RXM35R5V1B9

ARXM25R5V1B9

ARXM35R5V1B9

Table of contents

Installer reference guide

RXA-A9, RXM-R9, ARXM-R9

R32 Split system air conditioners

4P519439-12W – 2022.11

Table of contents

1 About the documentation 4

1.1 About this document ...................................................................................................................................................... 4

2 General safety precautions 6

2.1 About the documentation .............................................................................................................................................. 6

2.1.1 Meaning of warnings and symbols ................................................................................................................ 6

2.2 For the installer............................................................................................................................................................... 7

2.2.1 General ........................................................................................................................................................... 7

2.2.2 Installation site ............................................................................................................................................... 8

2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 11

2.2.4 Brine................................................................................................................................................................ 13

2.2.5 Water .............................................................................................................................................................. 13

2.2.6 Electrical ......................................................................................................................................................... 14

2.2.7 Gas .................................................................................................................................................................. 15

2.2.8 Gas exhaust..................................................................................................................................................... 16

2.2.9 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 Overview: About the units and options.......................................................................................................................... 26

5.2 Identification ................................................................................................................................................................... 26

5.2.1 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 and closing the unit.......................................................................................................................................... 31

6.2.1 About opening the units................................................................................................................................. 31

6.2.2 To open the outdoor unit............................................................................................................................... 31

6.2.3 To close the outdoor unit............................................................................................................................... 31

6.3 Mounting the outdoor unit............................................................................................................................................. 32

6.3.1 About mounting the outdoor unit ................................................................................................................. 32

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 35

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 Charging refrigerant 45

8.1 About charging refrigerant ............................................................................................................................................. 45

Table of contents

Installer reference guide

RXA-A9, RXM-R9, ARXM-R9

R32 Split system air conditioners

4P519439-12W – 2022.11

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

8.7 To fix the fluorinated greenhouse gases label ............................................................................................................... 48

9 Electrical installation 49

9.1 About connecting the electrical wiring .......................................................................................................................... 49

9.1.1 Precautions when connecting the electrical wiring....................................................................................... 49

9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 51

9.1.3 Specifications of standard wiring components.............................................................................................. 53

9.2 To connect the electrical wiring to the outdoor unit..................................................................................................... 53

10 Finishing the outdoor unit installation 55

10.1 To finish the outdoor unit installation............................................................................................................................ 55

10.2 To close the outdoor unit ............................................................................................................................................... 55

11 Configuration 56

11.1 Facility setting ................................................................................................................................................................. 56

11.1.1 To set the facility mode.................................................................................................................................. 56

11.2 Standby electricity saving function................................................................................................................................. 56

11.2.1 About the standby electricity saving function ............................................................................................... 56

11.2.2 To turn ON standby electricity saving function ............................................................................................. 57

12 Commissioning 58

12.1 Precautions when commissioning.................................................................................................................................. 58

12.2 Checklist before commissioning..................................................................................................................................... 58

12.3 Checklist during commissioning ..................................................................................................................................... 59

12.4 To perform a test run...................................................................................................................................................... 59

12.5 Starting up the outdoor unit........................................................................................................................................... 60

13 Hand-over to the user 61

14 Maintenance and service 62

14.1 Overview: Maintenance and service .............................................................................................................................. 62

14.2 Maintenance safety precautions.................................................................................................................................... 62

14.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 62

14.4 About the compressor .................................................................................................................................................... 63

15 Troubleshooting 64

15.1 Overview: Troubleshooting ............................................................................................................................................ 64

15.2 Precautions when troubleshooting ................................................................................................................................ 64

15.3 Solving problems based on symptoms ........................................................................................................................... 64

15.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 64

15.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 65

15.3.3 Symptom: Water leakage ............................................................................................................................... 65

15.3.4 Symptom: Electrical leakage .......................................................................................................................... 65

15.3.5 Symptom: Unit does NOT function or burn damage..................................................................................... 65

15.4 Fault diagnosis using LED on outdoor unit PCB.............................................................................................................. 65

16 Disposal 66

16.1 Overview: Disposal.......................................................................................................................................................... 66

16.2 To pump down................................................................................................................................................................ 66

16.3 To start and stop forced cooling..................................................................................................................................... 67

16.3.1 To start and stop forced cooling using the indoor unit ON/OFF switch ....................................................... 67

16.3.2 To start and stop forced cooling using the indoor unit user interface ......................................................... 67

17 Technical data 68

17.1 Wiring diagram................................................................................................................................................................ 68

17.1.1 Unified wiring diagram legend....................................................................................................................... 68

18 Glossary 71