PVA Installation Manual

2
Contents
Contents .....................................................................................2
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.....................................................................7
8. Duct connection ......................................................................7
9. Mount positions ......................................................................8
9.1. Vertical installations .......................................................8
9.2. Horizontal right installations ...........................................9
9.3. Horizontal left installations ...........................................10
9.4. Downow installations .................................................14
10. Air lter................................................................................16
11. Refrigerant piping work .......................................................17
11.1. Insulation ....................................................................18
11.2. Piping size ..................................................................18
12. Drain connections ...............................................................19
13. Electrical wiring...................................................................20
13.1. Remote controllers .....................................................21
13.2. Connecting line voltage .............................................22
13.3. Condensate overow safety switch connection
(CN4F) ...................................................................23
13.4. Changing blower external static pressure ..................23
13.5. ERV (energy recovery ventilation) .............................24
13.6. Humidier ...................................................................25
14. Test run ...............................................................................26
14.1. Before test run ...........................................................26
14.2. Test run ......................................................................26
14.3. Self-check ..................................................................26
14.4. AUTO RESTART FUNCTION ....................................28