Name: Daikin VRV 5 RXYA8A7Y1B
Brand: Daikin
Rating: 4 (1 reviews)

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Installer and user reference guide

VRV 5 heat pump

RXYA8A7Y1B

RXYA10A7Y1B

RXYA12A7Y1B

RXYA14A7Y1B

RXYA16A7Y1B

RXYA18A7Y1B

RXYA20A7Y1B

RYMA5A7Y1B

Table of Contents2
About this Document6
Meaning of Warnings and Symbols6
General Safety Precautions8
For the Installer8
General8
Installation Site9
Refrigerant - in Case of R410A or R329
Electrical11
Specific Installer Safety Instructions14
Instructions for Equipment Using R32 Refrigerant18
For the User20
User Safety Instructions21
General21
Instructions for Safe Operation22
About the System27
System Layout28
User Interface29
Operation30
Before Operation30
Operation Range30
Operating the System31
About Operating the System31
About Cooling, Heating, Fan Only, and Automatic Operation31
About the Heating Operation31
To Operate the System (WITHOUT Cool/Heat Changeover Remote Control Switch)32
To Operate the System (with Cool/Heat Changeover Remote Control Switch)33
Using the Dry Program33
About the Dry Program33
To Use the Dry Program (WITHOUT Cool/Heat Changeover Remote Control Switch)34
To Use the Dry Program (with Cool/Heat Changeover Remote Control Switch)34
Adjusting the Air Flow Direction35
About the Air Flow Flap35
Setting the Master User Interface36
About Setting the Master User Interface36
To Designate the Master User Interface36
About Control Systems36
Energy Saving and Optimum Operation38
Available Main Operation Methods39
Available Comfort Settings39
Maintenance and Service40
Precautions for Maintenance and Service40
Maintenance before a Long Stop Period40
Maintenance after a Long Stop Period40
About the Refrigerant41
After-Sales Service41
Recommended Maintenance and Inspection41
Recommended Maintenance and Inspection Cycles42
Shortened Maintenance and Replacement Cycles42
Troubleshooting44
Error Codes: Overview45
Symptoms that Are NOT System Malfunctions48
Symptom: the System Does Not Operate48
Symptom: Cool/Heat Cannot be Changed over48
Symptom: Fan Operation Is Possible, but Cooling and Heating Do Not Work48
Symptom: the Fan Speed Does Not Correspond to the Setting48
Symptom: the Fan Direction Does Not Correspond to the Setting49
Symptom: White Mist Comes out of a Unit (Indoor Unit)49
Symptom: White Mist Comes out of a Unit (Indoor Unit, Outdoor Unit)49
Symptom: the User Interface Reads "U4" or "U5" and Stops, but then Restarts after a few Minutes49
Symptom: Noise of Air Conditioners (Indoor Unit)49
Symptom: Noise of Air Conditioners (Indoor Unit, Outdoor Unit)50
Symptom: Noise of Air Conditioners (Outdoor Unit)50
Symptom: Dust Comes out of the Unit50
Symptom: the Units Can Give off Odours50
Symptom: the Outdoor Unit Fan Does Not Spin50
Symptom: the Display Shows "8850
Symptom: the Compressor in the Outdoor Unit Does Not Stop after a Short Heating Operation50
Symptom: the Inside of an Outdoor Unit Is Warm Even When the Unit Has Stopped50
Symptom: Hot Air Can be Felt When the Indoor Unit Is Stopped50
Relocation51
Disposal52
Technical Data53
Eco Design Requirements53
For the Installer54
About the Box55
To Unpack the Outdoor Unit56
To Remove the Accessories from the Outdoor Unit56
Accessory Pipes: Diameters57
To Remove the Transportation Stay (Only for 5~12 HP)57
About the Units and Options59
Identification Label: Outdoor Unit59
About the Outdoor Unit60
System Layout60
Combining Units and Options61
About Combining Units and Options61
Possible Combinations of Indoor Units61
Possible Combinations of Outdoor Units62
Possible Options for the Outdoor Unit62
About the Piping Connections64
Special Requirements for R32 Units65
Installation Space Requirements65
System Layout Requirements65
To Determine the Required Safety Measures68
Overview: Flowchart72
Safety Measures72
No Safety Measure72
Alarm73
Natural Ventilation74
Shut-Off Valves77
Overview: Flowchart80
Combinations of Safety Measures81
Unit Installation82
Preparing the Installation Site82
Installation Site Requirements of the Outdoor Unit82
Additional Installation Site Requirements of the Outdoor Unit in Cold Climates85
Opening the Unit87
About Opening the Units87
To Open the Outdoor Unit87
To Open the Switch Box of the Outdoor Unit87
Mounting the Outdoor Unit88
To Provide the Installation Structure88
To Install the Outdoor Unit89
Piping Installation90
Preparing Refrigerant Piping90
Refrigerant Piping Requirements90
Refrigerant Piping Material91
Refrigerant Piping Insulation91
To Select the Piping Size91
To Select Refrigerant Branch Kits93
Installation Limitations94
About the Piping Length96
Single and Multi-Outdoor-Unit Combinations98
Multiple Outdoor Units: Possible Layouts100
Connecting the Refrigerant Piping102
About Connecting the Refrigerant Piping102
Precautions When Connecting the Refrigerant Piping102
Multiple Outdoor Units: Knockout Holes103
Using the Stop Valve and Service Port103
To Route the Refrigerant Piping105
To Protect against Contamination106
To Remove the Pinched Pipes107
To Braze the Pipe End108
To Connect the Refrigerant Piping to the Outdoor Unit108
To Connect the Multi Connection Piping Kit109
To Connect the Refrigerant Branching Kit110
Checking the Refrigerant Piping110
About Checking the Refrigerant Piping110
Checking Refrigerant Piping: General Guidelines111
Checking Refrigerant Piping: Setup112
To Perform a Leak Test112
To Perform Vacuum Drying113
To Insulate the Refrigerant Piping114
To Check for Leaks after Charging Refrigerant115
Charging Refrigerant116
Precautions When Charging Refrigerant116
About Charging Refrigerant117
To Determine the Additional Refrigerant Amount117
To Charge Refrigerant: Flow Chart120
To Charge Refrigerant120
Error Codes When Charging Refrigerant123
Checks after Charging Refrigerant123
To Fix the Fluorinated Greenhouse Gases Label123
To Check Refrigerant Piping Joints for Leaks after Charging Refrigerant124
Electrical Installation125
About Connecting the Electrical Wiring125
Precautions When Connecting the Electrical Wiring125
About the Electrical Wiring127
Guidelines When Knocking out Knockout Holes128
Guidelines When Connecting the Electrical Wiring129
About Electrical Compliance131
Specifications of Standard Wiring Components132
To Route and Fix the Interconnection Wiring134
To Connect the Interconnection Wiring135
To Finish the Interconnection Wiring136
To Route and Fix the Power Supply136
To Connect the Power Supply137
To Connect the External Outputs138
To Check the Insulation Resistance of the Compressor139
Configuration141
Making Field Settings141
About Making Field Settings141
Field Setting Components142
To Access the Field Setting Components143
To Access Mode 1 or 2143
To Use Mode 1144
To Use Mode 2145
Mode 1: Monitoring Settings146
Mode 2: Field Settings148
Indoor Unit Field Setting155
Energy Saving and Optimum Operation156
Available Main Operation Methods156
Available Comfort Settings157
Example: Automatic Mode During Cooling159
Example: Automatic Mode During Heating160
Using the Leak Detection Function161
About Automatic Leak Detection161
To Manually Perform a Leak Detection161
Commissioning163
Overview: Commissioning163
Precautions When Commissioning163
Checklist before Commissioning164
Checklist During Commissioning165
About the SV Unit Test Run166
About the System Test Run166
To Perform a Test Run166
Correcting after Abnormal Completion of the Test Run167
To Perform a Sv/Indoor Unit Connection Check168
Operating the Unit170
Hand-Over to the User171
Maintenance and Service172
Maintenance Safety Precautions172
To Prevent Electrical Hazards172
Checklist for Yearly Maintenance of the Outdoor Unit173
About Service Mode Operation173
To Use Vacuum Mode174
To Recover Refrigerant174
Before the Maintenance and Service of a System with SV Unit174
Unit Maintenance and Service Label174
Troubleshooting176
Overview: Troubleshooting176
Precautions When Troubleshooting176
Solving Problems Based on Error Codes176
Error Codes: Overview177
Refrigerant Leak Detection System184
Disposal187
Technical Data188
Service Space: Outdoor Unit188
Piping Diagram: Outdoor Unit190
Wiring Diagram: Outdoor Unit193
Glossary196

Brand	Daikin
Model	VRV 5 RXYA8A7Y1B
Category	Heat Pump
Language	English

Daikin VRV 5 RXYA8A7Y1B User Manual

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