Daikin RXJ20A5V1B9 Bedienungsanleitung

Daikin Klimaanlage RXJ20A5V1B9

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Installer reference guide

R32 split series

RXJ42A5V1B9

RXJ50A5V1B9

Table of contents

Installer reference guide

RXJ-A9

R32 split series

4P766272-1 – 2024.01

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 Electrical......................................................................................................................................................... 12

3 Specific installer safety instructions 15

4 About the box 21

4.1 Outdoor unit................................................................................................................................................................... 21

4.1.1 To unpack the outdoor unit........................................................................................................................... 21

4.1.2 To handle the outdoor unit ........................................................................................................................... 21

4.1.3 To remove the accessories from the outdoor unit ....................................................................................... 22

5 About the unit 23

5.1 Identification .................................................................................................................................................................. 23

5.1.1 Identification label: Outdoor unit.................................................................................................................. 23

6 Unit installation 24

6.1 Preparing the installation site ........................................................................................................................................ 24

6.1.1 Installation site requirements of the outdoor unit ....................................................................................... 25

6.1.2 Additional installation site requirements of the outdoor unit in cold climates ........................................... 27

6.2 Opening and closing the unit ......................................................................................................................................... 28

6.2.1 About opening the units................................................................................................................................ 28

6.2.2 To open the outdoor unit .............................................................................................................................. 28

6.3 Mounting the outdoor unit............................................................................................................................................ 28

6.3.1 About mounting the outdoor unit................................................................................................................. 28

6.3.2 Precautions when mounting the outdoor unit ............................................................................................. 29

6.3.3 To provide the installation structure............................................................................................................. 29

6.3.4 To install the outdoor unit............................................................................................................................. 30

6.3.5 To provide drainage....................................................................................................................................... 30

6.3.6 To prevent the outdoor unit from falling over.............................................................................................. 31

7 Piping installation 32

7.1 Preparing refrigerant piping........................................................................................................................................... 32

7.1.1 Refrigerant piping requirements................................................................................................................... 32

7.1.2 Refrigerant piping insulation ......................................................................................................................... 33

7.1.3 Refrigerant piping length and height difference........................................................................................... 33

7.2 Connecting the refrigerant piping.................................................................................................................................. 33

7.2.1 About connecting the refrigerant piping ...................................................................................................... 34

7.2.2 Precautions when connecting the refrigerant piping ................................................................................... 34

7.2.3 Guidelines when connecting the refrigerant piping ..................................................................................... 35

7.2.4 Pipe bending guidelines................................................................................................................................. 36

7.2.5 To flare the pipe end ..................................................................................................................................... 36

7.2.6 Using the stop valve and service port ........................................................................................................... 37

7.2.7 To connect the refrigerant piping to the outdoor unit................................................................................. 38

7.3 Checking the refrigerant piping ..................................................................................................................................... 39

7.3.1 About checking the refrigerant piping .......................................................................................................... 39

7.3.2 Precautions when checking the refrigerant piping....................................................................................... 39

7.3.3 To check for leaks .......................................................................................................................................... 40

7.3.4 To perform vacuum drying ............................................................................................................................ 40

8 Charging refrigerant 42

8.1 About charging refrigerant............................................................................................................................................. 42

8.2 About the refrigerant ..................................................................................................................................................... 43

8.3 Precautions when charging refrigerant ......................................................................................................................... 44

8.4 To determine the additional refrigerant amount.......................................................................................................... 44

8.5 To determine the complete recharge amount.............................................................................................................. 44

8.6 To charge additional refrigerant .................................................................................................................................... 44

8.7 To check refrigerant piping joints for leaks after charging refrigerant......................................................................... 45

8.8 To fix the fluorinated greenhouse gases label............................................................................................................... 45