Gree GMV-72WM/B-U Owner's Manual page 4

1 Safety Precautions..................................................................................................... 1
2 Product Introduction ................................................................................................. 2
2.1 Names of Main Parts ........................................................................................................ 2
2.2 Combinations of Outdoor Units ......................................................................................... 2
2.3 Combinations of Indoor and Outdoor Units ....................................................................... 3
2.4 The Range of Production Working Temperature ............................................................... 3
3 Preparation before Installation ................................................................................. 4
3.1 Standard Parts .................................................................................................................. 4
3.2 Installation Site ................................................................................................................. 4
3.3 Piping Work Requirements ............................................................................................... 8
4 Installation Instruction .............................................................................................. 9
4.1 ODU Foundation ............................................................................................................... 9
4.2 Physical Dimension of the Outdoor Unit and Mounting Hole ............................................. 9
4.3 Connection Pipe .............................................................................................................. 11
4.4 Installation of the Connection Pipe ...................................................................................20
4.5 Air Purging and Refrigerant Charge .................................................................................24
4.6 Electric Wiring ..................................................................................................................28
4.7 System Communication ...................................................................................................30
4.8 Connection Method and Steps for System Communication ..............................................33
4.9 External Electrical Wiring Diagram ...................................................................................38
5 Check Items after Installation and Trial Run .......................................................... 38
5.1 Check Items after Installation ...........................................................................................38
5.2 Trial Run ..........................................................................................................................39
6 Common Malfunction and Troubleshooting .......................................................... 50
7 Error Indication ........................................................................................................ 52
8 Maintenance and Care ............................................................................................. 55
8.1 Outdoor Heat Exchanger .................................................................................................56
8.2 Drain Pipe ........................................................................................................................56
8.3 Notice before Seasonal Use ............................................................................................56
8.4 Maintenance after Seasonal Use .....................................................................................56
8.5 Parts Replacement ..........................................................................................................56
9 After-sales Service ................................................................................................... 56
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