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
11
2.2.4 Brine
12
2.2.5 Water
13
2.2.6 Electrical
13
4.1 Overview: About The Box
22
4.2 Outdoor Unit
22
4.2.1 To Unpack The Outdoor Unit
22
4.2.2 To Remove The Accessories From The Outdoor Unit
23
5.1 Overview: About The Unit
25
5.2 Identification
25
5.2.1 Identification Label: Outdoor Unit
25
6.1 Preparing The Installation Site
26
6.1.1 Installation Site Requirements Of The Outdoor Unit
27
6.1.2 Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
29
6.2 Opening The Unit
30
6.2.1 About Opening The Unit
30
6.2.2 To Open The Outdoor Unit
30
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
31
6.3.3 To Provide The Installation Structure
31
6.3.4 To Install The Outdoor Unit
32
6.3.5 To Provide Drainage
32
6.3.6 To Prevent The Outdoor Unit From Falling Over
33
7.1 Preparing Refrigerant Piping
34
7.1.1 Refrigerant Piping Requirements
34
7.1.2 Refrigerant Piping Insulation
35
7.1.3 Refrigerant Piping Length And Height Difference
35
7.2 Connecting The Refrigerant Piping
36
7.2.1 About Connecting The Refrigerant Piping
36
7.2.2 Precautions When Connecting The Refrigerant Piping
36
7.2.3 Guidelines When Connecting The Refrigerant Piping
38
7.2.4 Pipe Bending Guidelines
38
7.2.5 To Flare The Pipe End
38
7.2.6 Connections Between Outdoor And Indoor Unit Using Reducers
39
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
48
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
53
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
59
12.4 Checklist During Commissioning
60
12.5 Trial Operation And Testing
60
12.5.1 To Perform A Test Run
60
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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