Daikin 3MXM52A2V1B8 Handleiding

Daikin Airco 3MXM52A2V1B8

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Installer reference guide

R32 Split series

2MXM68A2V1B8 3MXM40A2V1B8

3MXM52A2V1B8

3MXM68A2V1B8

4MXM68A2V1B8

4MXM80A2V1B8

5MXM90A2V1B8

Table of contents

Installer reference guide

2MXM-A8, 3MXM-A8, 4MXM-A8, 5MXM-A8

R32 Split series

4P766272-5C – 2025.05

Table of contents

1 About the documentation 4

1.1 Product code .................................................................................................................................................................. 4

1.2 About this document...................................................................................................................................................... 4

1.2.1 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 the unit ............................................................................................................................................................ 28

6.2.1 About opening the unit.................................................................................................................................. 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........................................................................................... 34

7.2 Connecting the refrigerant piping.................................................................................................................................. 35

7.2.1 About connecting the refrigerant piping ...................................................................................................... 35

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

7.2.3 Guidelines when connecting the refrigerant piping ..................................................................................... 37

7.2.4 Pipe bending guidelines................................................................................................................................. 37

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

7.2.6 Connections between outdoor and indoor unit using reducers .................................................................. 38

7.2.7 Using the stop valve and service port ........................................................................................................... 41

7.2.8 To connect the refrigerant piping to the outdoor unit................................................................................. 42

7.3 Checking the refrigerant piping ..................................................................................................................................... 43

7.3.1 About checking the refrigerant piping .......................................................................................................... 43

7.3.2 Precautions when checking the refrigerant piping....................................................................................... 43

7.3.3 To check for leaks .......................................................................................................................................... 43

7.3.4 To perform vacuum drying ............................................................................................................................ 44

8 Charging refrigerant 46

8.1 About charging refrigerant............................................................................................................................................. 46

8.2 About the refrigerant ..................................................................................................................................................... 47

8.3 Precautions when charging refrigerant ......................................................................................................................... 48

8.4 To determine the additional refrigerant amount.......................................................................................................... 48

8.5 To determine the complete recharge amount.............................................................................................................. 49

8.6 To charge additional refrigerant .................................................................................................................................... 49

8.7 To fix the fluorinated greenhouse gases label............................................................................................................... 49