Mitsubishi Electric MVZ-A12 AA4 Manuel D'installation page 2

Contents
1. Dimensions .............................................................................3
2. Inspect shipment ....................................................................4
3. Safety precautions ..................................................................4
3.1. Before installation and electric work ..............................4
3.2. Precautions for devices that use R410A refrigerant ......5
3.3. Before getting started ....................................................5
3.4. Before getting installed (moved)-electrical work ............5
3.5. Before starting the test run ............................................6
4. Indoor unit accessories...........................................................6
5. Selecting an installation site ..................................................6
6. Combining indoor units with outdoor units..............................6
7. Installing the unit.....................................................................6
8. Duct connection ......................................................................7
9. Mount positions ......................................................................7
9.1. Vertical installations .......................................................7
9.2. Horizontal right installations ...........................................8
9.3. Horizontal left installations .............................................9
9.4. Downfl ow installations .................................................13
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10. Air fi lter................................................................................15
11. Refrigerant piping work .......................................................16
11.1. Insulation ....................................................................17
11.2. Piping size ..................................................................17
12. Drain connections ...............................................................18
13. Electrical wiring...................................................................19
13.1. Remote controllers .....................................................20
13.2. Connecting line voltage .............................................21
13.3. Condensate overfl ow safety switch connection .........22
13.4. Changing blower external static pressure ..................22
13.5. ERV (energy recovery ventilation) .............................23
13.6. Humidifi er ...................................................................24
14. Test run ...............................................................................25
14.1. Before test run ...........................................................25
14.2. Test run ......................................................................25
14.3. Self-check ..................................................................25
14.4. AUTO RESTART FUNCTION ....................................27