FDA125A5VEB
Split system air conditioners
4P495031-1B - 2022.10
15.1
Identification ................................................................................................................................................................... 46
15.1.1
15.2
About the indoor unit ..................................................................................................................................................... 46
15.3
System layout.................................................................................................................................................................. 47
15.4
Combining units and options.......................................................................................................................................... 47
15.4.1
16.1
Preparing the installation site......................................................................................................................................... 49
16.1.1
16.2
Mounting the indoor unit ............................................................................................................................................... 51
16.2.1
16.2.2
16.2.3
17.1
Preparing refrigerant piping ........................................................................................................................................... 59
17.1.1
17.1.2
Refrigerant piping insulation.......................................................................................................................... 60
17.2
Connecting the refrigerant piping .................................................................................................................................. 60
17.2.1
17.2.2
17.2.3
17.2.4
Pipe bending guidelines ................................................................................................................................. 62
17.2.5
To flare the pipe end ...................................................................................................................................... 62
17.2.6
18.1
18.1.1
18.1.2
18.1.3
18.2
19.1
Overview: Commissioning .............................................................................................................................................. 71
19.2
Precautions when commissioning .................................................................................................................................. 71
19.3
Checklist before commissioning..................................................................................................................................... 71
19.4
To perform a test run...................................................................................................................................................... 72
20.1
Field setting..................................................................................................................................................................... 73
22.1
22.1.1
Error codes: Overview .................................................................................................................................... 76
24.1
Wiring diagram................................................................................................................................................................ 78
24.1.1
Unified wiring diagram legend ....................................................................................................................... 78
Table of Contents
46
49
59
64
71
73
75
76
77
78
81
Installer and user reference guide
3