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
10
2.2.4 Electrical
12
4.1 Overview: About The Box
21
4.2 Outdoor Unit
21
4.2.1 To Unpack The Outdoor Unit
21
4.2.2 To Remove The Accessories From The Outdoor Unit
22
5.1 Overview: About The Unit
24
5.2 Identification
24
5.2.1 Identification Label: Outdoor Unit
24
6.1 Preparing The Installation Site
25
6.1.1 Installation Site Requirements Of The Outdoor Unit
26
6.1.2 Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
28
6.2 Opening The Unit
29
6.2.1 About Opening The Unit
29
6.2.2 To Open The Outdoor Unit
29
6.3 Mounting The Outdoor Unit
30
6.3.1 About Mounting The Outdoor Unit
30
6.3.2 Precautions When Mounting The Outdoor Unit
30
6.3.3 To Provide The Installation Structure
30
6.3.4 To Install The Outdoor Unit
31
6.3.5 To Provide Drainage
31
6.3.6 To Prevent The Outdoor Unit From Falling Over
32
7.1 Preparing Refrigerant Piping
33
7.1.1 Refrigerant Piping Requirements
33
7.1.2 Refrigerant Piping Insulation
34
7.1.3 Refrigerant Piping Length And Height Difference
34
7.2 Connecting The Refrigerant Piping
35
7.2.1 About Connecting The Refrigerant Piping
35
7.2.2 Precautions When Connecting The Refrigerant Piping
35
7.2.3 Guidelines When Connecting The Refrigerant Piping
36
7.2.4 Pipe Bending Guidelines
37
7.2.5 To Flare The Pipe End
37
7.2.6 Connections Between Outdoor And Indoor Unit Using Reducers
38
7.2.7 Using The Stop Valve And Service Port
39
7.2.8 To Connect The Refrigerant Piping To The Outdoor Unit
41
7.3 Checking The Refrigerant Piping
41
7.3.1 About Checking The Refrigerant Piping
41
7.3.2 Precautions When Checking The Refrigerant Piping
42
7.3.3 To Check For Leaks
42
7.3.4 To Perform Vacuum Drying
43
8.1 About Charging Refrigerant
45
8.2 About The Refrigerant
46
8.3 Precautions When Charging Refrigerant
47
8.4 To Determine The Additional Refrigerant Amount
47
8.5 To Determine The Complete Recharge Amount
47
8.6 To Charge Additional Refrigerant
47
8.7 To Fix The Fluorinated Greenhouse Gases Label
48
9.1 About Connecting The Electrical Wiring
49
9.1.1 Precautions When Connecting The Electrical Wiring
49
9.1.2 Guidelines When Connecting The Electrical Wiring
51
9.1.3 Specifications Of Standard Wiring Components
52
9.2 To Connect The Electrical Wiring To The Outdoor Unit
52
10.1 To Finish The Outdoor Unit Installation
55
10.2 To Close The Outdoor Unit
55
11.1 About Econo Mode Prohibition Setting
56
11.1.1 To Turn On Econo Mode Prohibition Setting
56
11.2 About Night Quiet Mode
57
11.2.1 To Turn On The Night Quiet Mode
57
11.3 About Heat Mode Lock
57
11.3.1 To Turn On Heat Mode Lock
57
11.4 About Standby Electricity Saving Function
58
11.4.1 To Turn On Standby Electricity Saving Function
58
12.1 Overview: Commissioning
59
12.2 Precautions When Commissioning
59
12.3 Checklist Before Commissioning
60
12.4 Checklist During Commissioning
60
12.5 Trial Operation And Testing
60
12.5.1 To Perform A Test Run
61
12.6 Starting Up The Outdoor Unit
61
14.1 Overview: Maintenance And Service
63
14.2 Maintenance Safety Precautions
63
14.3 Checklist For Yearly Maintenance Of The Outdoor Unit
63
14.4 About The Compressor
64
15.1 Overview: Troubleshooting
65
15.2 Precautions When Troubleshooting
65
15.3 Solving Problems Based On Symptoms
65
15.3.1 Symptom: Indoor Units Fall, Vibrate Or Make Noise
65
15.3.2 Symptom: The Unit Is Not Heating Or Cooling As Expected
66
15.3.3 Symptom: Water Leakage
66
15.3.4 Symptom: Electrical Leakage
66
15.3.5 Symptom: Unit Does Not Function Or Burn Damage
66
15.4 Solving Problems Based On Led Behaviour
66
15.4.1 Fault Diagnosis Using Led On Outdoor Unit Pcb
66
16.1 Overview: Disposal
68
16.2 To Pump Down
68
16.3 To Start And Stop Forced Cooling
69
16.3.1 To Start And Stop Forced Cooling Using The Indoor Unit On/Off Switch
69
16.3.2 To Start And Stop Forced Cooling Using The Indoor Unit User Interface
69
17.1 Wiring Diagram
70
17.1.1 Unified Wiring Diagram Legend
70
17.2 Piping Diagram: Outdoor Unit
72
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