Table Of Contents - Midea MSG-07CRN2 Service Manual

1. Precaution .................................................................................................................... 1
1.1 Safety Precaution ...................................................................................................................... 1
1.2 Warning ..................................................................................................................................... 1
2. Function ....................................................................................................................... 3
3. Dimension .................................................................................................................... 5
3.1 Indoor unit.................................................................................................................................. 5
3.2 Outdoor unit ............................................................................................................................... 6
4. Specification ................................................................................................................ 7
5. Refrigerant cycle diagram......................................................................................... 11
6. Operation limits ......................................................................................................... 12
6.1 Cooling operation..................................................................................................................... 12
6.2 Heating operation .................................................................................................................... 12
7. Schematic diagram and Wiring diagram ................................................................. 13
7.1 Schematic diagram .................................................................................................................. 13
7.2 Wiring diagram......................................................................................................................... 14
8. Installation details...................................................................................................... 19
8.1 Wrench torque sheet for installation......................................................................................... 19
8.2 Connecting the cables ............................................................................................................. 19
8.3 Pipe length and the elevation................................................................................................... 19
8.4 Air purging of the piping and indoor unit .................................................................................. 20
8.5 Pumping down (Re-installation) ............................................................................................... 21
8.6 Re-air purging (Re-installation) ................................................................................................ 22
8.7 Balance refrigerant of the 2-way, 3-way valves........................................................................ 23
8.8 Evacuation ............................................................................................................................... 24
8.9 Gas charging ........................................................................................................................... 25
9. Capacity table ............................................................................................................ 26
9.1 MSG-07CRN2.......................................................................................................................... 26
9.2 MSG-07HRN2.......................................................................................................................... 26
9.3 MSG-09CRN2.......................................................................................................................... 27
9.4 MSG-09HRN2.......................................................................................................................... 27
9.5 MSG-12CRN2.......................................................................................................................... 28
9.6 MSG-12HRN2.......................................................................................................................... 28
9.7 MSG-16CRN2.......................................................................................................................... 29
9.8 MSG-16HRN2.......................................................................................................................... 29
9.9 MSG-18CRN2.......................................................................................................................... 30
9.10 MSG-18HRN2.......................................................................................................................... 30
9.11 MSG-21CRN2.......................................................................................................................... 31
9.12 MSG-21HRN2.......................................................................................................................... 31
10. Electronic function .................................................................................................... 32
10.1 Electronic control working environment ................................................................................... 32
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