Table of Contents
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FXHA-A
VRV system air conditioner
4P673749-1A - 2022.11
14.1
Indoor unit ...................................................................................................................................................................... 44
14.1.1
To unpack and handle the unit ...................................................................................................................... 44
14.1.2
To remove the accessories from the indoor unit .......................................................................................... 45
15.1
Identification ................................................................................................................................................................... 47
15.1.1
Identification label: Indoor unit ..................................................................................................................... 47
15.2
About the indoor unit ..................................................................................................................................................... 47
15.3
System layout.................................................................................................................................................................. 47
15.4
Combining units and options.......................................................................................................................................... 48
15.4.1
Possible options for the indoor unit............................................................................................................... 48
16.1
Preparing the installation site......................................................................................................................................... 50
16.1.1
Installation site requirements of the indoor unit .......................................................................................... 50
16.2
Mounting the indoor unit ............................................................................................................................................... 52
16.2.1
Guidelines when installing the indoor unit.................................................................................................... 52
16.2.2
Guidelines when installing the drain piping................................................................................................... 56
17.1
Preparing refrigerant piping ........................................................................................................................................... 60
17.1.1
Refrigerant piping requirements.................................................................................................................... 60
17.1.2
Refrigerant piping insulation.......................................................................................................................... 61
17.2
Connecting the refrigerant piping .................................................................................................................................. 61
17.2.1
About connecting the refrigerant piping ....................................................................................................... 61
17.2.2
Precautions when connecting the refrigerant piping.................................................................................... 62
17.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 63
17.2.4
Pipe bending guidelines ................................................................................................................................. 63
17.2.5
To flare the pipe end ...................................................................................................................................... 63
17.2.6
To connect the refrigerant piping to the indoor unit .................................................................................... 64
18.1
About connecting the electrical wiring .......................................................................................................................... 68
18.1.1
Precautions when connecting the electrical wiring....................................................................................... 68
18.1.2
Guidelines when connecting the electrical wiring......................................................................................... 69
18.1.3
Specifications of standard wiring components.............................................................................................. 71
18.2
To connect the electrical wiring to the indoor unit ....................................................................................................... 71
19.1
To mount the suction grille and decoration side panel ................................................................................................. 74
20.1
Overview: Commissioning .............................................................................................................................................. 75
20.2
Precautions when commissioning .................................................................................................................................. 75
20.3
Checklist before commissioning..................................................................................................................................... 76
20.4
To perform a test run...................................................................................................................................................... 76
21.1
Field setting..................................................................................................................................................................... 77
23.1
Solving problems based on error codes ......................................................................................................................... 82
23.1.1
Error codes: Overview .................................................................................................................................... 82
25.1
Wiring diagram................................................................................................................................................................ 85
25.1.1
Unified wiring diagram legend ....................................................................................................................... 85
Table of contents
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88
Installer and user reference guide
3
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Table of Contents
Troubleshooting
