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EKVDX32~100A2VEB
VRV system air conditioner
4P664010-1 - 2021.08
13.1
Overview: About the box ................................................................................................................................................ 49
13.2
Indoor unit ...................................................................................................................................................................... 49
13.2.1
To unpack and handle the unit ...................................................................................................................... 49
13.2.2
To remove the accessories from the indoor unit .......................................................................................... 50
13.2.3
To remove the duct flanges from the indoor unit......................................................................................... 51
14.1
Identification ................................................................................................................................................................... 52
14.1.1
Identification label: Indoor unit ..................................................................................................................... 52
14.2
About the indoor unit ..................................................................................................................................................... 52
14.3
System layout.................................................................................................................................................................. 53
14.4
Combining units and options.......................................................................................................................................... 54
14.4.1
Possible options for the indoor unit............................................................................................................... 55
14.4.2
Compatibility with outdoor unit..................................................................................................................... 55
14.4.3
Compatibility with VAM models..................................................................................................................... 55
15.1
Preparing the installation site......................................................................................................................................... 56
15.1.1
Installation site requirements of the indoor unit .......................................................................................... 56
15.2
Mounting the indoor unit ............................................................................................................................................... 58
15.2.1
Guidelines when installing the indoor unit.................................................................................................... 58
15.2.2
Guidelines when installing the ducting.......................................................................................................... 59
15.2.3
Guidelines when installing the drain piping................................................................................................... 60
15.2.4
To connect the drain piping to the indoor unit ............................................................................................. 61
16.1
Preparing refrigerant piping ........................................................................................................................................... 63
16.1.1
Refrigerant piping requirements.................................................................................................................... 63
16.1.2
Refrigerant piping insulation.......................................................................................................................... 64
16.2
Connecting the refrigerant piping .................................................................................................................................. 64
16.2.1
About connecting the refrigerant piping ....................................................................................................... 64
16.2.2
Precautions when connecting the refrigerant piping.................................................................................... 65
16.2.3
Guidelines when connecting the refrigerant piping...................................................................................... 66
16.2.4
Pipe bending guidelines ................................................................................................................................. 66
16.2.5
To flare the pipe end ...................................................................................................................................... 66
16.2.6
To connect the refrigerant piping to the indoor unit .................................................................................... 67
17.1
About connecting the electrical wiring .......................................................................................................................... 69
17.1.1
Precautions when connecting the electrical wiring....................................................................................... 69
17.1.2
Guidelines when connecting the electrical wiring......................................................................................... 70
17.1.3
Specifications of standard wiring components.............................................................................................. 71
17.2
To connect the electrical wiring to the indoor unit ....................................................................................................... 72
17.3
To connect the external outputs .................................................................................................................................... 74
17.4
To connect the external input ........................................................................................................................................ 74
18.1
Independent system ....................................................................................................................................................... 76
18.2
Central control system.................................................................................................................................................... 77
19.1
To set the discharge temperature correction factor ..................................................................................................... 78
19.2
To deactivate the R32 safety system.............................................................................................................................. 78
19.3
About external input switching (T1/T2) ......................................................................................................................... 79
19.4
Field settings ................................................................................................................................................................... 80
20.1
Overview: Commissioning .............................................................................................................................................. 82
20.2
Precautions when commissioning .................................................................................................................................. 82
20.3
Checklist before commissioning..................................................................................................................................... 82
20.4
To perform a test run...................................................................................................................................................... 84
22.1
Checklist for yearly maintenance of the indoor unit ..................................................................................................... 86
23.1
Solving problems based on error codes ......................................................................................................................... 87
23.1.1
Error codes: Overview .................................................................................................................................... 87
Table of contents
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87
Installer and user reference guide
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