1.1 About This Document
4
2.1 About The Documentation
6
2.1.1 Meaning Of Warnings And Symbols
6
2.2 For The Installer
7
2.2.1 General
7
2.2.2 Installation Site
8
2.2.3 Refrigerant — In Case Of R410A Or R32
8
2.2.4 Electrical
10
3.1 Instructions For Equipment Using R32 Refrigerant
15
3.1.1 Installation Space Requirements
17
4.1 General
19
4.2 Instructions For Safe Operation
20
5.1 System Layout
25
5.2 Information Requirements For Fan Coil Units
26
8.1 Operation Range
29
8.2 About Operation Modes
29
8.2.1 Basic Operation Modes
29
8.2.2 Special Heating Operation Modes
30
8.3 To Operate The System
30
10.1 Precautions For Maintenance And Service
32
10.2 Cleaning The Air Filter And Air Outlet
33
10.2.1 To Clean The Air Filter
33
10.2.2 To Clean The Air Outlet
34
10.3 Maintenance Before A Long Stop Period
34
10.4 Maintenance After A Long Stop Period
34
10.5 About The Refrigerant
34
10.5.1 About The Refrigerant Leakage Sensor
35
11.1 Symptoms That Are Not System Malfunctions
38
11.1.1 Symptom: The System Does Not Operate
38
11.1.2 Symptom: White Mist Comes Out Of A Unit (Indoor Unit)
39
11.1.3 Symptom: White Mist Comes Out Of A Unit (Indoor Unit, Outdoor Unit)
39
11.1.5 Symptom: Noise Of Air Conditioners (Indoor Unit)
39
11.1.6 Symptom: Noise Of Air Conditioners (Indoor Unit, Outdoor Unit)
39
11.1.7 Symptom: Dust Comes Out Of The Unit
39
11.1.8 Symptom: The Units Can Give Off Odours
39
14.1 Indoor Unit
43
14.1.1 To Unpack And Handle The Unit
43
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
46
15.4 Combining Units And Options
46
15.4.1 Possible Options For The Indoor Unit
46
16.1 Preparing The Installation Site
48
16.1.1 Installation Site Requirements Of The Indoor Unit
48
16.2 Mounting The Indoor Unit
50
16.2.1 Guidelines When Installing The Indoor Unit
50
16.2.2 Guidelines When Installing The Ducting
55
16.2.3 Guidelines When Installing The Drain Piping
56
17.1 Preparing Refrigerant Piping
59
17.1.1 Refrigerant Piping Requirements
59
17.1.2 Refrigerant Piping Insulation
60
17.2 Connecting The Refrigerant Piping
60
17.2.1 About Connecting The Refrigerant Piping
60
17.2.2 Precautions When Connecting The Refrigerant Piping
61
17.2.3 Guidelines When Connecting The Refrigerant Piping
62
17.2.4 Pipe Bending Guidelines
62
17.2.5 To Flare The Pipe End
62
17.2.6 To Connect The Refrigerant Piping To The Indoor Unit
63
18.1 About Connecting The Electrical Wiring
65
18.1.1 Precautions When Connecting The Electrical Wiring
65
18.1.2 Guidelines When Connecting The Electrical Wiring
66
18.1.3 Specifications Of Standard Wiring Components
67
18.2 To Connect The Electrical Wiring To The Indoor Unit
68
19.1 Overview: Commissioning
71
19.2 Precautions When Commissioning
71
19.3 Checklist Before Commissioning
72
19.4 To Perform A Test Run
72
20.1 Field Setting
74
22.1 Solving Problems Based On Error Codes
79
22.1.1 Error Codes: Overview
79
24.1 Wiring Diagram
82
24.1.1 Unified Wiring Diagram Legend
82
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