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Installer reference guide

Sky Air Active-series

AZAS100MUV

AZAS125MUV

AZAS140MUV

AZAS100MUY

AZAS125MUY

AZAS140MUY

Table of contents

Installer reference guide

AZAS100~140MUV/Y

Sky Air Active-series

4P743509-1B – 2024.05

Table of contents

1 About this document 4

1.1 Meaning of warnings and symbols ................................................................................................................................ 4

1.2 Installer reference guide at a glance.............................................................................................................................. 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 20

4.1 Outdoor unit................................................................................................................................................................... 20

4.1.1 To unpack the outdoor unit........................................................................................................................... 20

4.1.2 To handle the outdoor unit ........................................................................................................................... 20

4.1.3 To remove the accessories from the outdoor unit ....................................................................................... 21

5 About the units and options 22

5.1 Identification .................................................................................................................................................................. 22

5.1.1 Identification label: Outdoor unit.................................................................................................................. 22

6 Unit installation 23

6.1 Preparing the installation site ........................................................................................................................................ 23

6.1.1 Installation site requirements of the outdoor unit ....................................................................................... 23

6.1.2 Additional installation site requirements of the outdoor unit in cold climates ........................................... 26

6.2 Opening and closing the unit ......................................................................................................................................... 26

6.2.1 About opening the units................................................................................................................................ 26

6.2.2 To open the outdoor unit .............................................................................................................................. 26

6.2.3 To close the outdoor unit .............................................................................................................................. 28

6.3 Mounting the outdoor unit............................................................................................................................................ 29

6.3.1 About mounting the outdoor unit................................................................................................................. 29

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.............................................................................................. 32

7 Piping installation 33

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

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

7.1.2 Refrigerant piping material............................................................................................................................ 33

7.1.3 Refrigerant piping diameter .......................................................................................................................... 34

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

7.1.5 Refrigerant piping insulation ......................................................................................................................... 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 ..................................................................................................................................... 36

7.2.6 To braze the pipe end.................................................................................................................................... 37

7.2.7 Using the stop valve and service port ........................................................................................................... 38

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

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 Checking refrigerant piping: Setup................................................................................................................ 44

7.3.4 To perform a leak test ................................................................................................................................... 44

7.3.5 To perform vacuum drying ............................................................................................................................ 44

8 Electrical installation 46

8.1 About connecting the electrical wiring.......................................................................................................................... 46

8.1.1 Precautions when connecting the electrical wiring...................................................................................... 46

8.1.2 Guidelines when connecting the electrical wiring........................................................................................ 47

8.1.3 About electrical compliance .......................................................................................................................... 49