1.1 About The Documentation
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1.1.1 Meaning Of Warnings And Symbols
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1.2 For The Installer
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1.2.1 General
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1.2.2 Installation Site
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1.2.3 Refrigerant
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1.2.4 Brine
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1.2.5 Water
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1.2.6 Electrical
11
2.1 About This Document
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2.2 Installer Reference Guide At A Glance
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3.1 Overview: About The Box
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3.2 Outdoor Unit
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3.2.1 To Unpack The Outdoor Unit
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3.2.2 To Remove The Accessories From The Outdoor Unit
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4.1 Overview: About The Unit
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4.2 Identification
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4.2.1 Identification Label: Outdoor Unit
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5.1 Overview: Preparation
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5.2 Preparing The Installation Site
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5.2.1 Installation Site Requirements Of The Outdoor Unit
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5.2.2 Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
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5.2.3 Refrigerant Piping Length And Height Difference
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5.3 Preparing Refrigerant Piping
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5.3.1 Refrigerant Piping Requirements
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5.3.2 Refrigerant Piping Insulation
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5.4 Preparing Electrical Wiring
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5.4.1 About Preparing Electrical Wiring
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6.1 Overview: Installation
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6.2 Opening The Unit
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6.2.1 About Opening The Unit
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6.2.2 To Open The Outdoor Unit
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6.3 Mounting The Outdoor Unit
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6.3.1 About Mounting The Outdoor Unit
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6.3.2 Precautions When Mounting The Outdoor Unit
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6.3.3 To Provide The Installation Structure
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6.3.4 To Install The Outdoor Unit
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6.3.5 To Provide Drainage
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6.3.6 To Prevent The Outdoor Unit From Falling Over
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6.4 Connecting The Refrigerant Piping
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6.4.1 About Connecting The Refrigerant Piping
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6.4.2 Precautions When Connecting The Refrigerant Piping
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6.4.3 Guidelines When Connecting The Refrigerant Piping
31
6.4.4 Pipe Bending Guidelines
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6.4.5 To Flare The Pipe End
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6.4.6 Using The Stop Valve And Service Port
33
6.4.7 To Connect The Refrigerant Piping To The Outdoor Unit
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6.5 Checking The Refrigerant Piping
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6.5.1 About Checking The Refrigerant Piping
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6.5.2 Precautions When Checking The Refrigerant Piping
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6.5.3 To Check For Leaks
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6.5.4 To Perform Vacuum Drying
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6.6 Charging Refrigerant
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6.6.1 About Charging Refrigerant
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6.6.2 About The Refrigerant
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6.6.3 Precautions When Charging Refrigerant
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6.6.4 To Determine The Additional Refrigerant Amount
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6.6.5 To Determine The Complete Recharge Amount
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6.6.6 To Charge Additional Refrigerant
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6.6.7 To Fix The Fluorinated Greenhouse Gases Label
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6.7 Connecting The Electrical Wiring
41
6.7.1 About Connecting The Electrical Wiring
41
6.7.2 Precautions When Connecting The Electrical Wiring
41
6.7.3 Guidelines When Connecting The Electrical Wiring
42
6.7.4 Specifications Of Standard Wiring Components
43
6.7.5 To Connect The Electrical Wiring On The Outdoor Unit
44
6.8 Finishing The Outdoor Unit Installation
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6.8.1 To Finish The Outdoor Unit Installation
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6.8.2 To Close The Outdoor Unit
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7.1 Facility Setting
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7.1.1 To Set The Facility Mode
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7.2 Standby Electricity Saving Function
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7.2.1 About The Standby Electricity Saving Function
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7.2.2 To Turn On Standby Electricity Saving Function
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8.1 Overview: Commissioning
49
8.2 Precautions When Commissioning
49
8.3 Checklist Before Commissioning
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8.4 Checklist During Commissioning
50
8.5 To Perform A Test Run
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8.6 Starting Up The Outdoor Unit
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10.1 Overview: Maintenance And Service
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10.2 Maintenance Safety Precautions
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10.3 Checklist For Yearly Maintenance Of The Outdoor Unit
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10.4 About The Compressor
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11.1 Overview: Troubleshooting
55
11.2 Precautions When Troubleshooting
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11.3 Solving Problems Based On Symptoms
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11.3.1 Symptom: Indoor Units Fall, Vibrate Or Make Noise
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11.3.2 Symptom: The Unit Is Not Heating Or Cooling As Expected
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11.3.3 Symptom: Water Leakage
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11.3.4 Symptom: Electrical Leakage
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11.3.5 Symptom: Unit Does Not Function Or Burn Damage
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11.4 Fault Diagnosis Using Led On Outdoor Unit Pcb
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12.1 Overview: Disposal
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12.2 To Pump Down
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12.3 To Start And Stop Forced Cooling
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12.3.1 To Start And Stop Forced Cooling Using The Indoor Unit On/Off Switch
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12.3.2 To Start And Stop Forced Cooling Using The Indoor Unit User Interface
58
13.1 Wiring Diagram
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13.1.1 Unified Wiring Diagram Legend
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13.2 Piping Diagram
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13.2.1 Piping Diagram: Outdoor Unit
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