1.1 About This Document
4
1.2 Meaning Of Warnings And Symbols
5
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 Electrical
12
4.1 General
18
4.2 Instructions For Safe Operation
19
5.1 System Layout
22
5.2 Information Requirements For Fan Coil Units
23
8.1 Operation Range
26
8.2 About Operation Modes
26
8.2.1 Basic Operation Modes
26
8.2.2 Special Heating Operation Modes
27
8.2.3 Adjusting The Airflow Direction
27
8.3 To Operate The System
28
10.1 Precautions For Maintenance And Service
30
10.2 Cleaning The Unit Exterior, Air Filter And Suction Grille
31
10.2.1 To Clean The Exterior
31
10.2.2 To Clean The Air Filter
31
10.2.3 To Clean The Suction Grille
32
10.3 Maintenance Before A Long Stop Period
33
10.4 Maintenance After A Long Stop Period
34
10.5 About The Refrigerant
34
11.1 Symptoms That Are Not System Malfunctions
37
11.1.1 Symptom: The System Does Not Operate
37
11.1.2 Symptom: The Fan Speed Does Not Correspond To The Setting
37
11.1.3 Symptom: The Fan Direction Does Not Correspond To The Setting
37
11.1.4 Symptom: White Mist Comes Out Of A Unit (Indoor Unit)
38
11.1.5 Symptom: White Mist Comes Out Of A Unit (Indoor Unit, Outdoor Unit)
38
11.1.7 Symptom: Noise Of Air Conditioners (Indoor Unit)
38
11.1.8 Symptom: Noise Of Air Conditioners (Indoor Unit, Outdoor Unit)
38
11.1.9 Symptom: Dust Comes Out Of The Unit
38
11.1.10 Symptom: The Units Can Give Off Odours
38
14.1 Indoor Unit
42
14.1.1 To Unpack And Handle The Unit
42
14.1.2 To Remove The Accessories From The Indoor Unit
43
15.1 Identification
45
15.1.1 Identification Label: Indoor Unit
45
15.2 About The Indoor Unit
45
15.3 System Layout
45
15.4 Combining Units And Options
46
15.4.1 Possible Options For The Indoor Unit
46
16.1 Preparing The Installation Site
47
16.1.1 Installation Site Requirements Of The Indoor Unit
47
16.2 Mounting The Indoor Unit
49
16.2.1 Guidelines When Installing The Indoor Unit
49
16.2.2 Guidelines When Installing The Drain Piping
52
17.1 Preparing Refrigerant Piping
56
17.1.1 Refrigerant Piping Requirements
56
17.1.2 Refrigerant Piping Insulation
57
17.2 Connecting The Refrigerant Piping
57
17.2.1 About Connecting The Refrigerant Piping
57
17.2.2 Precautions When Connecting The Refrigerant Piping
58
17.2.3 Guidelines When Connecting The Refrigerant Piping
59
17.2.4 Pipe Bending Guidelines
59
17.2.5 To Flare The Pipe End
59
17.2.6 To Connect The Refrigerant Piping To The Indoor Unit
60
18.1 About Connecting The Electrical Wiring
63
18.1.1 Precautions When Connecting The Electrical Wiring
63
18.1.2 Guidelines When Connecting The Electrical Wiring
64
18.1.3 Specifications Of Standard Wiring Components
65
18.2 To Connect The Electrical Wiring To The Indoor Unit
66
19.1 To Mount The Suction Grille And Decoration Side Panel
70
20.1 Overview: Commissioning
71
20.2 Precautions When Commissioning
71
20.3 Checklist Before Commissioning
72
20.4 To Perform A Test Run
72
21.1 Field Setting
73
23.1 Solving Problems Based On Error Codes
78
23.1.1 Error Codes: Overview
78
25.1 Wiring Diagram
80
25.1.1 Unified Wiring Diagram Legend
80
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