Content
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Content
1. Precaution .......................................................................................................................... 1
1.1 Safety Precaution .............................................................................................................................. 1
1.2 Warning ............................................................................................................................................. 1
2. Function.............................................................................................................................. 3
3. Dimension........................................................................................................................... 5
3.1 Indoor unit（Vertu） .......................................................................................................................... 5
3.2 Outdoor unit（Vertu） ....................................................................................................................... 5
4. Specification....................................................................................................................... 6
5. Refrigerant cycle diagram................................................................................................. 7
6. Operation limits.................................................................................................................. 8
6.1 Cooling operation............................................................................................................................... 8
6.2 Heating operation .............................................................................................................................. 8
7. Schematic diagram and Wiring diagram.......................................................................... 9
7.1. Schematic diagram ............................................................................................................................ 9
7.2. Wiring diagram ................................................................................................................................13
8. Installation details............................................................................................................ 14
8.1 Wrench torque sheet for installation ................................................................................................ 14
8.2 Connecting the cables ..................................................................................................................... 14
8.3 Pipe length and the elevation .......................................................................................................... 14
8.4 Air purging of the piping and indoor unit .......................................................................................... 15
8.5 Pumping down (Re-installation) ....................................................................................................... 16
8.6 Re-air purging (Re-installation) ........................................................................................................ 17
8.7 Balance refrigerant of the 2-way, 3-way valves................................................................................ 18
8.8 Evacuation....................................................................................................................................... 19
8.9 Gas charging ................................................................................................................................... 20
9. Pressure table .................................................................................................................. 21
9.1 MSV1-09HRDN1 ............................................................................................................................. 21
9.2 MSV1-12HRDN1 ............................................................................................................................. 21
10. Capacity table................................................................................................................... 22
10.1 MSV1-09HRDN1 ............................................................................................................................. 22
10.2 MSV1-12HRDN1 ............................................................................................................................. 22
11. Electronic function........................................................................................................... 24
11.1. Display board................................................................................................................................... 24
11.2. Protection ........................................................................................................................................ 25
11.3. Fan-only mode................................................................................................................................. 25
11.4. Cooling mode .................................................................................................................................. 25
11.5. Dehumidifying mode ........................................................................................................................ 26
11.6. Heating mode .................................................................................................................................. 26
11.7. Defrosting operation (Available for heating only). ............................................................................ 27
11.8. Outdoor low temperature protection (optional) ................................................................................ 28
11.9. Automatic operation mode............................................................................................................... 28
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