Daikin RXA25A3V1B Handleiding

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Installer reference guide

R32 Split system air conditioners

RXJ20M5V1B

RXJ25M5V1B

RXJ35M5V1B

RXA20A5V1B

RXA25A5V1B

RXA35A5V1B

RXM20R5V1B

RXM25R5V1B

RXM35R5V1B

ARXM25R5V1B

ARXM35R5V1B

RXJ20M5V1B9

RXJ25M5V1B9

RXJ35M5V1B9

RXA20A5V1B9

RXA25A5V1B9

RXA35A5V1B9

RXM20R5V1B9

RXM25R5V1B9

RXM35R5V1B9

ARXM25R5V1B9

ARXM35R5V1B9

Table of contents

Installer reference guide

RXJ-M(9)_RXA-A(9)_RXM-R(9)_ARXM-R(9)

R32 Split system air conditioners

4P519439-12M – 2021.02

Table of contents

1 About the documentation 4

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

2 General safety precautions 5

2.1 About the documentation .............................................................................................................................................. 5

2.1.1 Meaning of warnings and symbols ................................................................................................................ 5

2.2 For the installer............................................................................................................................................................... 6

2.2.1 General ........................................................................................................................................................... 6

2.2.2 Installation site ............................................................................................................................................... 7

2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 10

2.2.4 Electrical ......................................................................................................................................................... 12

3 Specific installer safety instructions 15

4 About the box 21

4.1 Overview: About the box ................................................................................................................................................ 21

4.2 Outdoor unit ................................................................................................................................................................... 21

4.2.1 To unpack the outdoor unit ........................................................................................................................... 21

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

5 About the unit 24

5.1 Overview: About the units and options.......................................................................................................................... 24

5.2 Identification ................................................................................................................................................................... 24

5.2.1 Identification label: Outdoor unit .................................................................................................................. 24

6 Unit installation 25

6.1 Preparing the installation site......................................................................................................................................... 25

6.1.1 Installation site requirements of the outdoor unit........................................................................................ 26

6.1.2 Additional installation site requirements of the outdoor unit in cold climates............................................ 28

6.2 Opening and closing the unit.......................................................................................................................................... 29

6.2.1 About opening the units................................................................................................................................. 29

6.2.2 To open the outdoor unit............................................................................................................................... 29

6.2.3 To close the outdoor unit............................................................................................................................... 29

6.3 Mounting the outdoor unit............................................................................................................................................. 30

6.3.1 About mounting the outdoor unit ................................................................................................................. 30

6.3.2 Precautions when mounting the outdoor unit.............................................................................................. 30

6.3.3 To provide the installation structure ............................................................................................................. 30

6.3.4 To install the outdoor unit ............................................................................................................................. 31

6.3.5 To provide drainage........................................................................................................................................ 31

6.3.6 To prevent the outdoor unit from falling over .............................................................................................. 32

7 Piping installation 33

7.1 Preparing refrigerant piping ........................................................................................................................................... 33

7.1.1 Refrigerant piping requirements.................................................................................................................... 33

7.1.2 Refrigerant piping insulation.......................................................................................................................... 34

7.1.3 Refrigerant piping length and height difference ........................................................................................... 34

7.2 Connecting the refrigerant piping .................................................................................................................................. 34

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

7.2.2 Precautions when connecting the refrigerant piping.................................................................................... 35

7.2.3 Guidelines when connecting the refrigerant piping...................................................................................... 36

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

7.2.5 To flare the pipe end ...................................................................................................................................... 37

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

7.2.7 To connect the refrigerant piping to the outdoor unit ................................................................................. 39

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........................................................................................ 40

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

7.3.4 To perform vacuum drying............................................................................................................................. 41

8 Charging refrigerant 43

8.1 About charging refrigerant ............................................................................................................................................. 43

8.2 About the refrigerant...................................................................................................................................................... 44

8.3 Precautions when charging refrigerant.......................................................................................................................... 45

8.4 To determine the additional refrigerant amount .......................................................................................................... 45

8.5 To determine the complete recharge amount .............................................................................................................. 45

8.6 To charge additional refrigerant..................................................................................................................................... 45