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Installer reference guide

Sky Air Alpha-series

RZAG71N▲V1B▼

RZAG100N▲V1B▼

RZAG125N▲V1B▼

RZAG140N▲V1B▼

RZAG71N▲Y1B▼

RZAG100N▲Y1B▼

RZAG125N▲Y1B▼

RZAG140N▲Y1B▼

▲= 1, 2, 3, ..., 9

▼= , , 1, 2, 3, …, 9

Table of contents

Installer reference guide

RZAG71~140N

Sky Air Alpha-series

4P695307-1A – 2024.02

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......................................................................................................... 10

2.1.4 Brine ............................................................................................................................................................... 12

2.1.5 Water ............................................................................................................................................................. 12

2.1.6 Electrical......................................................................................................................................................... 13

2.1.7 Gas.................................................................................................................................................................. 14

2.1.8 Gas exhaust.................................................................................................................................................... 15

2.1.9 Local legislation.............................................................................................................................................. 15

3 Specific installer safety instructions 17

4 About the box 22

4.1 Outdoor unit................................................................................................................................................................... 22

4.1.1 To unpack the outdoor unit........................................................................................................................... 22

4.1.2 To handle the outdoor unit ........................................................................................................................... 22

4.1.3 To remove the accessories from the outdoor unit ....................................................................................... 23

5 About the units and options 24

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

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

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

5.3 Combining units and options ......................................................................................................................................... 24

5.3.1 Possible options for the outdoor unit ........................................................................................................... 25

6 Preparation 26

6.1 Overview: Preparation ................................................................................................................................................... 26

6.2 Preparing the installation site ........................................................................................................................................ 26

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

6.2.2 Additional installation site requirements of the outdoor unit in cold climates ........................................... 29

6.3 Preparing refrigerant piping........................................................................................................................................... 29

6.3.1 Refrigerant piping requirements................................................................................................................... 29

6.3.2 Refrigerant piping insulation ......................................................................................................................... 32

6.4 Preparing electrical wiring ............................................................................................................................................. 33

6.4.1 About preparing electrical wiring.................................................................................................................. 33

7 Installation 34

7.1 Overview: Installation..................................................................................................................................................... 34

7.2 Opening the units........................................................................................................................................................... 34

7.2.1 About opening the units................................................................................................................................ 34

7.2.2 To open the outdoor unit .............................................................................................................................. 34

7.3 Mounting the outdoor unit............................................................................................................................................ 35

7.3.1 About mounting the outdoor unit................................................................................................................. 35

7.3.2 Precautions when mounting the outdoor unit ............................................................................................. 35

7.3.3 To provide the installation structure............................................................................................................. 35

7.3.4 To install the outdoor unit............................................................................................................................. 36

7.3.5 To provide drainage....................................................................................................................................... 36

7.3.6 To prevent the outdoor unit from falling over.............................................................................................. 38

7.4 Connecting the refrigerant piping.................................................................................................................................. 39

7.4.1 About connecting the refrigerant piping ...................................................................................................... 39

7.4.2 Precautions when connecting the refrigerant piping ................................................................................... 39

7.4.3 Guidelines when connecting the refrigerant piping ..................................................................................... 40

7.4.4 Pipe bending guidelines................................................................................................................................. 41

7.4.5 To flare the pipe end ..................................................................................................................................... 41

7.4.6 To braze the pipe end.................................................................................................................................... 42

7.4.7 Using the stop valve and service port ........................................................................................................... 42

7.4.8 To connect the refrigerant piping to the outdoor unit................................................................................. 44

7.5 Checking the refrigerant piping ..................................................................................................................................... 46

7.5.1 About checking the refrigerant piping .......................................................................................................... 46

7.5.2 Precautions when checking the refrigerant piping....................................................................................... 47