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
20
4.2 Outdoor Unit
20
4.2.1 To Unpack The Outdoor Unit
20
4.2.2 To Remove The Accessories From The Outdoor Unit
21
5.1 Overview: About The Unit
23
5.2 Identification
23
5.2.1 Identification Label: Outdoor Unit
23
6.1 Preparing The Installation Site
24
6.1.1 Installation Site Requirements Of The Outdoor Unit
25
6.1.2 Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
27
6.2 Opening The Unit
28
6.2.1 About Opening The Unit
28
6.2.2 To Open The Outdoor Unit
28
6.3 Mounting The Outdoor Unit
28
6.3.1 About Mounting The Outdoor Unit
28
6.3.2 Precautions When Mounting The Outdoor Unit
29
6.3.3 To Provide The Installation Structure
29
6.3.4 To Install The Outdoor Unit
30
6.3.5 To Provide Drainage
30
6.3.6 To Prevent The Outdoor Unit From Falling Over
31
7.1 Preparing Refrigerant Piping
32
7.1.1 Refrigerant Piping Requirements
32
7.1.2 Refrigerant Piping Insulation
33
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
40
7.2.8 To Connect The Refrigerant Piping To The Outdoor Unit
42
7.3 Checking The Refrigerant Piping
42
7.3.1 About Checking The Refrigerant Piping
42
7.3.2 Precautions When Checking The Refrigerant Piping
43
7.3.3 To Check For Leaks
43
7.3.4 To Perform Vacuum Drying
44
8.1 About Charging Refrigerant
46
8.2 About The Refrigerant
47
8.3 Precautions When Charging Refrigerant
48
8.4 To Determine The Additional Refrigerant Amount
48
8.5 To Determine The Complete Recharge Amount
48
8.6 To Charge Additional Refrigerant
49
8.7 To Fix The Fluorinated Greenhouse Gases Label
49
9.1 About Connecting The Electrical Wiring
50
9.1.1 Precautions When Connecting The Electrical Wiring
50
9.1.2 Guidelines When Connecting The Electrical Wiring
52
9.1.3 Specifications Of Standard Wiring Components
53
9.2 To Connect The Electrical Wiring To The Outdoor Unit
54
10.1 To Finish The Outdoor Unit Installation
56
10.2 To Close The Outdoor Unit
56
11.1 About Standby Electricity Saving Function
57
11.1.1 To Turn On Standby Electricity Saving Function
57
11.2 About Priority Room Function
58
11.2.1 To Set The Priority Room Function
58
11.3 About Night Quiet Mode
58
11.3.1 To Turn On The Night Quiet Mode
58
11.4 About Heat Mode Lock
59
11.4.1 To Turn On Heat Mode Lock
59
11.5 About Cool Mode Lock
59
11.5.1 To Turn On Cool Mode Lock
59
12.1 Overview: Commissioning
61
12.2 Precautions When Commissioning
61
12.3 Checklist Before Commissioning
62
12.4 Checklist During Commissioning
62
12.5 Trial Operation And Testing
62
12.5.1 About Wiring Error Check
63
12.5.2 To Perform A Test Run
64
12.6 Starting Up The Outdoor Unit
64
14.1 Overview: Maintenance And Service
66
14.2 Maintenance Safety Precautions
66
14.3 Checklist For Yearly Maintenance Of The Outdoor Unit
66
14.4 About The Compressor
67
15.1 Overview: Troubleshooting
68
15.2 Precautions When Troubleshooting
68
15.3 Solving Problems Based On Symptoms
68
15.3.1 Symptom: Indoor Units Fall, Vibrate Or Make Noise
68
15.3.2 Symptom: The Unit Is Not Heating Or Cooling As Expected
69
15.3.3 Symptom: Water Leakage
69
15.3.4 Symptom: Electrical Leakage
69
15.3.5 Symptom: Priority Room Setting Does Not Function
69
15.3.6 Symptom: Unit Does Not Function Or Burn Damage
69
15.4 Solving Problems Based On Led Behaviour
70
15.4.1 Fault Diagnosis Using Led On Outdoor Unit Pcb
70
16.1 Overview: Disposal
72
16.2 To Pump Down
72
16.3 To Start And Stop Forced Cooling
73
17.1 Wiring Diagram
75
17.1.1 Unified Wiring Diagram Legend
75
17.2 Piping Diagram: Outdoor Unit
77
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