1.1 About This Document
4
2.1 About The Documentation
5
2.1.1 Meaning Of Warnings And Symbols
5
2.2 For The Installer
6
2.2.1 General
6
2.2.2 Installation Site
7
2.2.3 Refrigerant — In Case Of R410A Or R32
7
2.2.4 Electrical
9
3.1 Instructions For Equipment Using R32 Refrigerant
14
3.1.1 Installation Space Requirements
15
4.1 General
17
4.2 Instructions For Safe Operation
18
5.1 System Layout
23
5.2 Information Requirements For Fan Coil Units
24
8.1 Operation Range
27
8.2 About Operation Modes
27
8.2.1 Basic Operation Modes
27
8.2.2 Special Heating Operation Modes
28
8.2.3 Adjusting The Airflow Direction
28
8.2.4 Active Circulation Airflow
29
8.3 To Operate The System
29
10.1 Precautions For Maintenance And Service
31
10.2 Cleaning The Air Filter, Suction Grille, Air Outlet And Outside Panels
32
10.2.1 To Clean The Air Filter
32
10.2.2 To Clean The Suction Grille
33
10.2.3 To Clean The Air Outlet And Outside Panels
34
10.3 Maintenance Before A Long Stop Period
35
10.4 Maintenance After A Long Stop Period
35
10.5 About The Refrigerant
35
10.5.1 About The Refrigerant Leakage Sensor
36
11.1 Symptoms That Are Not System Malfunctions
39
11.1.1 Symptom: The System Does Not Operate
39
11.1.2 Symptom: The Fan Speed Does Not Correspond To The Setting
39
11.1.3 Symptom: The Fan Direction Does Not Correspond To The Setting
39
11.1.4 Symptom: White Mist Comes Out Of A Unit (Indoor Unit)
40
11.1.5 Symptom: White Mist Comes Out Of A Unit (Indoor Unit, Outdoor Unit)
40
11.1.7 Symptom: Noise Of Air Conditioners (Indoor Unit)
40
11.1.8 Symptom: Noise Of Air Conditioners (Indoor Unit, Outdoor Unit)
40
11.1.9 Symptom: Dust Comes Out Of The Unit
40
11.1.10 Symptom: The Units Can Give Off Odours
40
14.1 Overview: About The Box
44
14.2 Indoor Unit
44
14.2.1 To Unpack And Handle The Unit
44
14.2.2 To Remove The Accessories From The Indoor Unit
45
15.1 Identification
46
15.1.1 Identification Label: Indoor Unit
46
15.2 About The Indoor Unit
46
15.3 System Layout
46
15.4 Combining Units And Options
47
15.4.1 Possible Options For The Indoor Unit
47
16.1 Preparing The Installation Site
49
16.1.1 Installation Site Requirements Of The Indoor Unit
49
16.2 Mounting The Indoor Unit
51
16.2.1 Guidelines When Installing The Indoor Unit
51
16.2.2 Guidelines When Installing The Drain Piping
54
17.1 Preparing Refrigerant Piping
58
17.1.1 Refrigerant Piping Requirements
58
17.1.2 Refrigerant Piping Insulation
59
17.2 Connecting The Refrigerant Piping
59
17.2.1 About Connecting The Refrigerant Piping
59
17.2.2 Precautions When Connecting The Refrigerant Piping
60
17.2.3 Guidelines When Connecting The Refrigerant Piping
60
17.2.4 Pipe Bending Guidelines
61
17.2.5 To Flare The Pipe End
61
17.2.6 To Connect The Refrigerant Piping To The Indoor Unit
62
18.1 About Connecting The Electrical Wiring
64
18.1.1 Precautions When Connecting The Electrical Wiring
64
18.1.2 Guidelines When Connecting The Electrical Wiring
65
18.1.3 Specifications Of Standard Wiring Components
66
18.2 To Connect The Electrical Wiring To The Indoor Unit
67
19.1 Overview: Commissioning
69
19.2 Precautions When Commissioning
69
19.3 Checklist Before Commissioning
70
19.4 To Perform A Test Run
70
20.1 Field Setting
71
22.1 Solving Problems Based On Error Codes
76
22.1.1 Error Codes: Overview
76
24.1 Wiring Diagram
79
24.1.1 Unified Wiring Diagram Legend
79
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