2
4.2 Attach mounting plate to wall ........................................................................................ 45
4.3 Drill wall hole for connective piping ............................................................................. 46
4.4 Prepare refrigerant piping .............................................................................................. 47
4.5 Connect drain hose ......................................................................................................... 48
4.6 Wrap piping and cables .................................................................................................. 48
4.7 Mount indoor unit .......................................................................................................... 49
5. Installation of cassette unit....................................................................................................... 50
5.1 Space required for installation ....................................................................................... 50
5.2 Installation...................................................................................................................... 50
5.3 Panel installation ............................................................................................................ 51
6. Installation of ducted unit ........................................................................................................ 53
6.1 Installation of main body ............................................................................................... 53
6.2 Installation Method of Lifting Bolt ................................................................................ 53
6.3 Adjustment of air return box .......................................................................................... 54
6.4 Air Intake Panel of Air Return Box................................................................................ 54
7. Installation of console .............................................................................................................. 55
7.1 Space required for installation ....................................................................................... 55
7.2 Installation of main body ............................................................................................... 55
8. Refrigerant pipe connection ..................................................................................................... 57
8.1 Flaring work ................................................................................................................... 57
8.2 Tightening Connection ................................................................................................... 58
8.3 Piping length and height difference ............................................................................... 58
8.4 Connection pipe diameter .............................................................................................. 59
9. Wiring connection .................................................................................................................... 60
9.1 Electrical safety regulations for the initial installation .................................................. 60
9.2 Wiring connection .......................................................................................................... 61
10. Air purging ............................................................................................................................. 62
11. Safety and leakage check ....................................................................................................... 64
11.1 Electrical safety check .................................................................................................. 64
11.2 Gas leak check ............................................................................................................. 65
12. Water drainage ....................................................................................................................... 65
13. Insulation work ...................................................................................................................... 66
14. Test operation ......................................................................................................................... 67
Ⅲ. Troubleshooting ............................................................................................................................. 69
1. Error code list ........................................................................................................................... 69
1.1 Indoor unit ...................................................................................................................... 69
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