Name: Daikin LREN8A7Y1B
Brand: Daikin
Rating: 4 (1 reviews)

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Installer and user reference guide

CO₂ ZEAS outdoor unit and capacity up unit

LREN8A7Y1B

LREN10A7Y1B

LREN12A7Y1B

LRNUN5A7Y1

Table of Contents2
About the Documentation5
About this Document5
General Safety Precautions6
About the Documentation6
Meaning of Warnings and Symbols6
For the Installer7
General7
Installation Site8
Refrigerant - in Case of R74410
Electrical11
Specific Installer Safety Instructions13
For the User22
User Safety Instructions23
General23
Instructions for Safe Operation24
About the System29
System Layout30
Operation31
Operation Modes31
Operation Range31
Field Piping Pressure31
Energy Saving and Optimum Operation32
Maintenance and Service33
Maintenance before a Long Stop Period33
Maintenance after a Long Stop Period33
About the Refrigerant34
Recommended Maintenance and Inspection34
Troubleshooting35
Error Codes: Overview36
Relocation38
Disposal39
For the Installer40
About the Box41
Outdoor Unit41
To Transport the Pallet41
To Unpack the Outdoor Unit42
To Handle the Outdoor Unit42
To Remove the Accessories from the Outdoor Unit43
About the Units and Options45
Identification45
Identification Label: Outdoor Unit45
About the Outdoor Unit46
Labels on Outdoor Unit47
System Layout53
Combining Units and Options53
Possible Options for the Outdoor Unit53
Indoor Unit Constraints54
Constraints for Refrigeration54
Unit Installation56
Preparing the Installation Site56
Installation Site Requirements of the Outdoor Unit57
Additional Installation Site Requirements of the Outdoor Unit in Cold Climates60
Additional Installation Site Requirements for CO₂ Refrigerant60
Opening and Closing the Unit65
About Opening the Units65
To Open the Outdoor Unit65
To Open the Electrical Component Box of the Outdoor Unit66
To Close the Outdoor Unit67
Mounting the Outdoor Unit68
About Mounting the Outdoor Unit68
Precautions When Mounting the Outdoor Unit68
To Provide the Installation Structure68
To Install the Outdoor Unit70
To Remove the Transportation Stay70
To Provide Drainage71
Piping Installation72
Preparing Refrigerant Piping72
Refrigerant Piping Requirements72
Refrigerant Piping Material73
Refrigerant Piping Length and Height Difference73
To Select the Piping Size75
To Select Refrigerant Branch Kits77
To Select Expansion Valves for Refrigeration77
Using Stop Valves and Service Ports78
Overview Stop Valves and Service Ports for Connection and Charging79
Overview Stop Valves for Maintenance79
To Handle the Stop Valve80
Tightening Torques81
To Handle the Service Port81
Connecting the Refrigerant Piping83
About Connecting the Refrigerant Piping83
Precautions When Connecting the Refrigerant Piping84
To Cut off the Spun Pipe Ends85
To Connect the Refrigerant Piping to the Outdoor Unit86
To Braze the Pipe End89
Guidelines to Connect T-Joints91
Guidelines to Install a Dryer92
Guidelines to Install a Filter92
About Safety Valves93
Guidelines to Install Blow-Off Piping96
Checking the Refrigerant Piping96
About Checking the Refrigerant Piping97
Checking Refrigerant Piping: General Guidelines97
Checking Refrigerant Piping: Setup97
To Perform a Strength Pressure Test and Leak Test98
To Perform Vacuum Drying98
Insulating the Refrigerant Piping99
To Insulate the Gas Stop Valve99
Electrical Installation101
About Connecting the Electrical Wiring101
Precautions When Connecting the Electrical Wiring101
Guidelines When Connecting the Electrical Wiring102
About Electrical Compliance104
Field Wiring: Overview105
Guidelines When Knocking out Knockout Holes106
Specifications of Standard Wiring Components107
Connections to the Outdoor Unit108
Low Voltage Wiring - Outdoor Unit108
High Voltage Wiring - Outdoor Unit110
Connections to the Capacity up Unit112
Low Voltage Wiring - Capacity up Unit112
High Voltage Wiring - Capacity up Unit114
Charging Refrigerant116
About Charging Refrigerant116
Precautions When Charging Refrigerant116
About the Refrigerant117
To Determine the Refrigerant Amount119
To Charge Refrigerant120
To Fix the Refrigerant Charge Label121
Finishing the Outdoor Unit Installation122
To Check the Insulation Resistance of the Compressor122
Configuration123
Making Field Settings123
About Making Field Settings123
To Access the Field Setting Components123
Field Setting Components124
To Access Mode 1 or 2126
To Set Field Settings127
Commissioning128
Overview: Commissioning128
Precautions When Commissioning128
Checklist before Commissioning129
About the Test Run130
To Perform a Test Run (7-Segment Display)130
Test Run Checks131
Correcting after Abnormal Completion of the Test Run133
Operating the Unit133
Logbook133
Hand-Over to the User135
Maintenance and Service136
Precautions for Maintenance and Service136
To Prevent Electrical Hazards136
To Release Refrigerant137
To Remove Refrigerant Using the Service Ports137
Troubleshooting139
Precautions When Troubleshooting139
Prerequisites: Troubleshooting139
Solving Problems Based on Error Codes139
Error Codes: Overview140
Disposal144
Technical Data145
Service Space: Outdoor Unit145
Piping Diagram: Outdoor Unit148
Piping Diagram: Capacity up Unit149
Wiring Diagram: Outdoor Unit150
Glossary155

Brand	Daikin
Model	LREN8A7Y1B
Category	Chiller
Language	English

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