Gree Ultra Heat GMV-V72W/A-F, Service Manual

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II
2.1 Pipes .................................................................................................................................................. 50
2.2 Requirements on Installation
...................................................................................................... 50
2.3 Other Requirements
...................................................................................................................... 51
2.4 Requirements on Installation of Drain Pipes for Different Types of IDUs ....................... 52
2.5 Requirements on Independent Drainage for Each IDU ........................................................ 53
2.6 Requirements on Centralized Drainage for IDUs
................................................................... 53
3 INSULATION SYSTEM
.............................................................................................................................. 53
3.1 Insulation for the Refrigerant Pipe System ............................................................................. 53
3.2 Insulation for the Condensate Water Pipe System ................................................................ 54
3.3 Insulation for Air Ducts
................................................................................................................. 54
PART 7 ELECTRIC AND CONTROLLER INSTALLATION
.................................................................... 56
1 PRECAUTION
............................................................................................................................................. 56
2 INSTALLATION OF THE POWER CABLE ............................................................................................. 57
2.1 Precautions ...................................................................................................................................... 57
2.2 Requirements on Power Cable Configuration
........................................................................ 57
2.3 Procedure for Installing the Power Cable
................................................................................ 58
3 INSTALLATION OF THE COMMUNICATION SYSTEM ....................................................................... 60
3.1 Connection of Communication Cable Terminals ................................................................... 61
3.2 Connection of Communication Cables
.................................................................................... 61
3.3 Communication Cable Connection Method and Procedure
............................................... 61
PART 8 VACUUMIZATION AND DESICCATION FOR THE REFRIGERANT SYSTEM .................... 65
1 AIR-TIGHTNESS TEST .............................................................................................................................. 65
1.1 Importance of the Air-tightness Test ......................................................................................... 65
1.2 Procedure for Performing the Air-tightness Test
................................................................... 65
1.3 Precautions
...................................................................................................................................... 65
2 VACUUMIZATION AND DESICCATION FOR THE SYSTEM ............................................................. 66
2.1 Requirements on the Vacuum Pump
......................................................................................... 66
2.2 Procedure and Precautions for Vacuumization and Desiccation
...................................... 66
PART 9 REFRIGERANT PERFUSION
....................................................................................................... 68
1 CALCULATION METHOD FOR PERFUSING REFRIGERANT ......................................................... 68
2 METHOD FOR PERFUSING REFRIGERANT ....................................................................................... 69
2.1 Refrigerant Pre-perfusion
............................................................................................................ 69
2.2 Refrigerant Perfusion During Running
..................................................................................... 70
CHAPTER 3 COMMISSIONING OPERATION .................................................................................................. 73
PART 1 SECURITY REQUIREMENTS ....................................................................................................... 73
1 PRECAUTIONS FOR CONSTRUCTION
................................................................................................ 73
2 PRECAUTIONS FOR THE USE OF REFRIGERANTS
........................................................................ 73
3 FUNCTION SETTINGS OF ODUS ........................................................................................................... 73
3.1 System Function DIP Switch Settings ...................................................................................... 74
3.2 System Function Button Operations
........................................................................................ 77
3.3 Function Setting Operations
....................................................................................................... 79
3.4 Basic Operations for Engineering Commissioning
.............................................................. 81
PART 2 COMMISSIONING PROCESS ...................................................................................................... 83
1 NECESSITY OF VRF ENGINEERING COMMISSIONING .................................................................. 83
2 REQUIRED FILES AND TOOLS FOR ENGINEERING DEBUGGING
.............................................. 83
2.1 Required Tools for Engineering Commissioning
.................................................................. 83
2.2 Commissioning Files .................................................................................................................... 83
3 ENGINEERING COMMISSIONING PROCEDURES ............................................................................. 84
3.1 Pre-commissioning Preparations
.............................................................................................. 84
3.2 Pre-commissioning Check
........................................................................................................... 84
3.3 Commissioning Operation ........................................................................................................... 88
CHAPTER 4 MAINTENANCE ............................................................................................................................ 101
PART 1 FAILURE CODE TABLE
.............................................................................................................. 101
1 SYSTEM FAILURE CODE TABLE
......................................................................................................... 101