Table of Contents
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FXHQ-A
VRV system air conditioner
4P715928-1 - 2022.11
14.1
Indoor unit ...................................................................................................................................................................... 39
14.1.1
To unpack and handle the unit ...................................................................................................................... 39
14.1.2
To remove the accessories from the indoor unit .......................................................................................... 40
15.1
Identification ................................................................................................................................................................... 42
15.1.1
Identification label: Indoor unit ..................................................................................................................... 42
15.2
About the indoor unit ..................................................................................................................................................... 42
15.3
System layout.................................................................................................................................................................. 42
15.4
Combining units and options.......................................................................................................................................... 43
15.4.1
Possible options for the indoor unit............................................................................................................... 43
16.1
Preparing the installation site......................................................................................................................................... 44
16.1.1
Installation site requirements of the indoor unit .......................................................................................... 44
16.2
Mounting the indoor unit ............................................................................................................................................... 46
16.2.1
Guidelines when installing the indoor unit.................................................................................................... 46
16.2.2
Guidelines when installing the drain piping................................................................................................... 49
17.1
Preparing refrigerant piping ........................................................................................................................................... 53
17.1.1
Refrigerant piping requirements.................................................................................................................... 53
17.1.2
Refrigerant piping insulation.......................................................................................................................... 54
17.2
Connecting the refrigerant piping .................................................................................................................................. 54
17.2.1
About connecting the refrigerant piping ....................................................................................................... 54
17.2.2
Precautions when connecting the refrigerant piping.................................................................................... 55
17.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 55
17.2.4
Pipe bending guidelines ................................................................................................................................. 56
17.2.5
To flare the pipe end ...................................................................................................................................... 56
17.2.6
To connect the refrigerant piping to the indoor unit .................................................................................... 57
18.1
About connecting the electrical wiring .......................................................................................................................... 60
18.1.1
Precautions when connecting the electrical wiring....................................................................................... 60
18.1.2
Guidelines when connecting the electrical wiring......................................................................................... 61
18.1.3
Specifications of standard wiring components.............................................................................................. 63
18.2
To connect the electrical wiring to the indoor unit ....................................................................................................... 63
19.1
To mount the suction grille and decoration side panel ................................................................................................. 67
20.1
Overview: Commissioning .............................................................................................................................................. 68
20.2
Precautions when commissioning .................................................................................................................................. 68
20.3
Checklist before commissioning..................................................................................................................................... 69
20.4
To perform a test run...................................................................................................................................................... 69
21.1
Field setting..................................................................................................................................................................... 70
23.1
Solving problems based on error codes ......................................................................................................................... 75
23.1.1
Error codes: Overview .................................................................................................................................... 75
25.1
Wiring diagram................................................................................................................................................................ 77
25.1.1
Unified wiring diagram legend ....................................................................................................................... 77
Table of contents
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Installer and user reference guide
3
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Table of Contents
Troubleshooting
