Gree NRQD16G/A-S - System Low Pressure Ratio Protection

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GMV5 Home DC Inverter Multi VRF Units

293

4.2.7. System low pressure ratio protection (J9)

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Table of Contents2
Safety Precautions6
Product List7
Outdoor Unit7
Hot Water Generator7
Chapter 1: Product Introduction7
Basic Parameter of Unit8
Water Tank8
Performance Parameter of Outdoor Unit8
Performance Parameter of Hot Water Generator9
Performance Parameter of Water Tank10
Product Functions11
Outline of Features11
Description of Features11
Basic Operational Principle12
Flow Diagram of System12
Instruction of Flow12
Naming Rules of Outdoor Unit13
Naming Rules of Indoor Unit13
Naming Rules of Hot Water Generator14
Naming Rules of Water Tank14
Product Model Selection and Collocation15
Usage Mode 1: Air Conditioner + Hot Water15
Installation Methods15
Usage Mode 2: Air Conditioner + Hot Water + Floor Heating16
Usage Mode 3: Air Conditioner + Floor Heating17
Revision of Product Capacity20
Requirement for Connecting Quantity20
Notices for Model Selection20
Product Operating Range20
Capacity Code20
Capacity Revision Method for Indoor and Outdoor Units20
Revision of Ambient Temperature and Collocation Rate Capacity21
Revision of Cooling Capacity21
Revision of Heating Capacity28
Revision Coefficient of Heating Water Capacity35
Revision of Floor Heating Capacity37
Revision of Length and Fall Difference of Connecting Pipe39
Heating Frosting Revision Factor40
Model Selection and Installation40
Notices for Model Selection40
Overall Model Selection Steps42
Usage42
Air Conditioner+Heating Water+Floor Heating42
Air Conditioner+Heating Water/Floor42
Basic Conditions43
Define Using Demand of User43
Define Collication Method of Unit43
Model Selection Example 1: Air Conditioner + Heating Water + Floor Heating, Air Conditioner + Floor Heating43
Initial Selection of Outdoor Unit44
Capacity Revision of Outdoor Unit44
Model Selection of Generator45
Checkup of Actual Output Capacity of each Indoor Unit45
Calculation of Floor Heating Load45
Model Selection of Water Tank46
Initial Selection of Generator46
Checkup of Quantity and Capacity of Generator46
Calculation of Water Consumption47
Calculation for Water Storage Capacity of Water Tank47
Design of Floor Heating Engineering48
Define Model of Water Tank48
Final Conclusion for Model Selection of Whole Unit49
Model Selection of Air Conditioner50
Model Selection Example 2: Air Conditioner + Heating Water50
Unit Control51
General Control Method51
Schematic Diagram of Unit Control51
Chapter 2: Control51
Capacity DIP Switch52
Fan Emergency Operation DIP Switch52
Explanation on Schematic Diagram53
Master Unit Setting DIP Switch53
Master Control System53
Input and Output Control Quantity53
Drive Control System54
Hydro Box Control System55
Operation Flowchart of Indoor Air Conditioner56
Cooling Operation57
Drying Operation58
Heating Operation59
Water Heating Operation60
Cooling and Water Heating Operation61
Heating and Water Heating Operation62
Operation Flow of Outdoor Unit63
Air Supply Operation63
Remote Controller69
Indoor Unit Wired Controller70
Display70
LCD of Wired Controller70
LCD Display Instructions70
Graphics of Buttons72
Function Instructions of Buttons72
Installation and Debugging of Wired Controller72
Dimension of Wired Controller72
Installation of Wired Controller73
Selection of Communication Wire73
Parts of Wired Controller73
Length of Communication Wire73
Installation Requirements74
Wiring Requirements74
One/Two Wired Controller Control One Indoor Unit74
Wiring Instructions75
One/Two Wired Controller Controls Multiple Indoor Units75
Installation76
Debugging77
Set Master Indoor Unit77
User Parameter Query77
Disassembly77
User Parameter Settings79
List of User Parameter Settings80
Engineering Parameter Query82
List of Engineering Parameter Query82
Engineering Parameter Settings87
List of Engineering Parameter Settings88
Hydro Box Wired Controller92
Display92
Buttons94
Installation and Debugging of Wired Controller95
Parameter Query99
Parameter Settings101
Operation Instructions102
Switch between Water Heating Interface and Floor Heating Interface102
On/Off of Water Heating103
Mode Setting of Water Heating103
Water Temperature Setting of Water Heating103
Switch of Water Heating Functions104
Setting of Sunflower Function104
Setting of Water Heating Water Temperature Auto Setting105
Setting of High-Temperature Sterilizing105
Setting of Rapid Water Heating107
Setting of Water Heating Timer On/Off107
Setting of Preset Water Heating110
On/Off of Floor Heating113
Water Temperature Setting of Floor Heating113
Switch of Floor Heating Functions113
Setting of Floor Heating Water Temperature Auto Setting114
Setting of Rapid Floor Heating114
Setting of Floor Heating Absence Function114
Setting of Floor Heating Timer On/Off114
Setting of Clock116
Malfunction Display117
Setting of Cleaning117
Remote Shield117
Child Lock117
Table of Malfunction Codes for Outdoor Unit118
Table of Malfunction Codes for Hydro Box122
Table of Commissioning Codes122
Table of Status Codes123
Engineering Installation Flowchart124
Chapter 3 Installation124
Common Tools and Devices125
Preparation before Installation127
Notices for Installation Engineering127
Safety Requirements for Installation Engineering127
Importance of Installation Engineering127
Cooperation between Different Professions128
Onsite Review of Design Drawing129
Requirements for Cooperation with Civil Engineering129
Requirements for Cooperation with Decoration Engineering129
Requirements for Cooperation with Electric129
Selection of Installation Materials130
Requirements for Selecting Installation Materials131
Copper Pipe131
Condensate Water Pipe131
Insulation Material131
Water System Pipe132
Floor Heating Pipe132
Communication Cable132
Communication Cable Selection for ODU and Idus132
Three Operation Modes133
Power Cable133
Operation Mode 1: Air Conditioning + Water Heating133
Operation Mode 2: Air Conditioning + Water Heating + Floor Heating134
Operation Mode 3: Air Conditioning + Floor Heating135
ODU Dimensions and Installation Hole Size138
Selection of Outdoor Unit Installation Place138
Installation Space Requirement for ODU138
Monsoons Must be Considered During ODU Installation140
Snow Must be Considered During ODU Installation140
Installation Space Requirement for Equipment Floor140
Preparation before Installing Static Pressure Ventilating Duct140
Installation of Pressure Ventilating Duct141
Installation Foundation of ODU143
Installation of IDU144
Vibration Reduction for ODU144
Outline Dimension and Installation Hole Dimension of Hydro Box145
Installation Position of Hydro Box145
Requirements for Installation Space of Hydro Box (Unit: MM)145
Installation Procedures of Hydro Box147
Internal Structure and Pipeline Instruction of Hydro Box148
Installation of Water Tank149
Outline Dimension and Installation Dimension of Water Tank149
Installation Position of Water Tank150
Installation Notice for Water Tank150
Design, Installation and Insulation of Refrigerant Pipeline151
Notices for Pipeline Design151
Schematic Diagram of Refrigerant Piping152
Piping Instruction152
Schematic Diagram for Refrigerant Piping of Top Discharge Outdoor Unit153
Allowable Length and Height Different of Refrigerant Piping of IDU and ODU154
Size of Refrigerant Piping155
Installation and Insulation of Refrigerant Pipe158
Pipe Installation for Cooling System158
Processing to Refrigerant Pipes158
Cut-Off and Burring158
Installation of Refrigerant Pipes159
Operation Sequence159
Construction of Support, Hanger, and Bracket159
Shaping and Fixing of Pipes159
Pipe Connection160
Welding Protection160
Requirements on Manifold Installation161
Pipe Cleaning by Nitrogen162
Air-Tightness Test164
Vacuumization and Desiccation for the System164
Importance of the Air-Tightness Test164
Procedure for Performing the Air-Tightness Test164
Insulation for the Refrigerant System Pipe165
Insulation Materials165
Thickness of the Insulation Layer165
Procedure of Insulation165
Pipe Installation and Insulation for the Condensate Water System and Insulation for the Ducts166
Installation of Drain Pipes for Different Types of Idus168
Drain Pipe Installation for Hidden Duct Type IDU168
Drain Test169
Full Water Test169
Drain Pipe Installation for Cassette Type IDU169
Installation and Insulation of Hot Water System Pipeline170
Insulation for Air Ducts170
Connection of Hot Water System Pipeline170
Insulation for the Condensate Water Pipe170
Connection Schematic Diagram for Hydro Box and Water Tank171
Connection Schematic Diagram for Hydro Box and Floor Heating172
Schematic of Solar Water Heater Connected with System for Heating172
Connection Schematic of Hydro Box with Water Tank and Floor Heating172
Connection Requirements of Hydro Box and Water Tank174
Installation Requirements of Water System174
Capacity Setting of Water Tank174
Installation of Floor Heating Performer (Floor Heating Water Separation Valve)177
Electric Installation180
Precautions180
Installation of Power182
Procedure for Installing the Power Cable182
Power Cable Diameter and Circuit Breaker Selection182
Odu182
Hydro Box183
Idu183
External Wiring Diagram of Unit185
ODU with Hydro Box and IDU185
Hydro Box and Water Tank185
Wiring Diagram of ODU187
Wiring Diagram of Hydro Box187
Installation of the Communication System188
Connection of Communication Cable188
Communication Way188
Selection of the Material of Communication Cable188
Communication Cable Selection for Idus/Hydro Box and Wired Controller189
Communication Cable Selection for ODU and Idus/Hydro Box189
Setting of Communication Address190
Connection of Communication Cables190
Connection Way and Procedures of Communication Cable191
Connection of Communication Cable between ODU and Idus/Hydro Box191
Communication Connection between the IDU and Wired Controller192
One/Two Wired Controller Controlling One IDU192
One/Two Wired Controller Controlling Multiple Idus193
Communication Connection between the Hydro Box and Wired Controller194
Connection between the Duct Type IDU and Receiver Board196
Refrigerant Charging197
Precautions on Refrigerant Leakage197
Calculation of Additional Refrigerant Charge Amount198
Example of Calculation198
Commissioning Flowchart200
Safety Notices200
Preparation before Commissioning200
Chapter 4 Commissioning Operation200
Preparation of Commissioning Tools200
Preparation of Commissioning Papers201
Inspection before Commissioning203
Commissioning Operation of Hydro Box208
Confirm Main Board DIP Switch208
Capacity DIP Switch of Hydro Box208
Function DIP Switch of Hydro Box208
Commissiong Operation209
Preparation for Commissioning209
Water System Commissioning209
Leak Detection209
Evacuation of Water Tank and User Side Pipeline210
Re-Evacuation210
Commissioning Operation of the Entire Unit211
Settings of Floor Heating Performer and Indoor Unit211
Preparation for Test Operation211
Test Operation211
Commissioning Operation Mode216
DIP Swith Instructions of GMV5 Unic225
Function DIP Switch Settings225
GMV5 Unic Outdoor Unit (GMV-S224W/A-X,GMV-S280W/A-X)225
System Function Button Operations230
Introduction to Function Buttons230
Introduction to Functions231
List of Functions231
Description of Functions232
Function Setting Operations234
Function Inquiry Operation240
Resuming Factory Settings246
Functional Dial Switch of Hydro Box NRQD16G/A-S247
Functional Application of Hydro Box247
Hydro Box (NRQD16G/A-S)247
Engineering Application Functions Operated Via XK56 Wired Controller248
User Parameter Inquiry List249
Engineering Parameter Inquiry252
Engineering Parameter Setting List258
Failure Display262
Table of Error Codes263
Chapter 5 Maintenance263
Setting of Outdoor Unit Noise Reduction267
Setting Instruction267
Effect of Quiret Mode268
Description of Question269
Analysis269
Troubleshooting269
Instruction for "Leaving out Charging Water" between Generator and Water Tank269
Analysis in Forms271
Control271
Troubleshooting271
System Faults276
System Exhaust Temperature Exception276
Pressure282
Poor Cooling/Heating Performance291
Flowchart Analysis293
High Exhaust Temperature Protection293
Low Exhaust Temperature Protection295
System High Pressure Protection295
System Low Pressure Protection296
System Refrigerant Lacking Protection297
System High Pressure Ratio Protection298
System Low Pressure Ratio Protection299
Indoor Unit Anti-Freezing Protection300
Indoor Unit Water Overflow Protection300
Pressure Sensor Fault301
Analysis of Drive Control System Faults302
Inverter Compressor Drive Board IPM Module Over-Temperature Fault306
Inverter Fan Overcurrent Protection311
IPM Module Protection Fault311
Inverter Fan Drive Board IPM Module Over-Temperature Fault312
Power Distribution Method315
Introduction on Key Electric Parts315
Circuit Diagram of Outdoor Unit316
Circuit Diagram of Hydro Box316
Assembly and Disassembly of Parts317
Introduction on Key Parts317
Assembly and Disassembly of Key Parts320
Assembly and Disassembly of Outdoor Unit320
Assembly and Disassembly of Four-Way Valve322
Assembly and Disassembly of Electric Expansion Valve323
Assembly and Disassembly of Oil Separator325
Assembly and Disassembly of Gas Liquid Separator327
Assembly and Disassembly of Plate Type Heat Exchanger329
Assembly and Disassembly of Hydro Box331
Common Maintenance333
Notice at the Beginning of Use Season333
Maintenance at the End of Use Season333
System Vacuum Pumping333
Outdoor Unit Heat Exchanger333
Drain Pipe333
Parts Replacement333
System Leak Detection333
Supplement and Charge of Regrigerant334
Exploded Views and List of Spare Parts335
List of Parts335
Outdoor Unit335
Hydro Box338
Exploded View339
Outdoor Unit Heat Exchanger341
Notices at the Beginning of Use Season341
Notices at the End of Use Season341
Chapter 6 Care341
Drain Pipe341
Parts Replacement341
Function Introduction342
Connection of Computer and Units342
Chapter 7 Monitoring Software342
Hardware Introduction343
Gree USB Data Converter343
Functions Introduction343
List of Parts343
Appearance344
Communication Board345
Communication Wire345
Operation Instruction345
Installation Notices345
Software Introduction346
Board Connection Wire346
Computer Configuration346
Installation Requirements346
CD Playing347
Installation Flowchart348
Installation Procedure348
Install.net Framework 4.0348
Install Access Driver352
Install Gree Debugger355
Install USB Converter Driver358
Install Gree USB Data Converter360
Use of Software365
Introduction of Functions365
Operation Methods365
One-Button Commissioning365
Project Debugging371
Control Units375
Other Functions377
Conversion of Pressure Value378
Database Saving of Multiple Systems379
Change Database Saving Path and Rebuild Database380
Use of USB Converter381
Usage of Converter381
Usage of Converter Configuring Software386
Debugging of Software389
Flowchart of Debugging389
Installation Faults390

Gree NRQD16G/A-S - System Low Pressure Ratio Protection

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