Midea MSV1-09HRDN1 - Default Chapter; Table of Contents

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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