Contents
Safety Precautions .................................................................................................................... 5
Pre-Installation Checklist ........................................................................................................... 6
Cassette Components ............................................................................................................... 7
Clearance Requirements ........................................................................................................... 7
Refrigerant Piping Requirements .............................................................................................. 8
Installation Location ................................................................................................................... 9
Installing the Indoor Unit .......................................................................................................... 10
Mounting Location ................................................................................................................... 10
Dimension of Ceiling Opening and Location of the Expansion Bolts ...................................... 11
Hoisting the Main Body of the Unit .......................................................................................... 12
Installation of the Condensate Pipe ......................................................................................... 13
Design of the Condensate Pipe ............................................................................................... 13
Precautions for the Drain Pipe................................................................................................. 14
Test the Drainage System ....................................................................................................... 15
Connecting the Pipe at the Indoor Unit.................................................................................... 16
Installation of the Refrigerant Piping........................................................................................ 17
Flare Processing...................................................................................................................... 17
Bending Pipes ......................................................................................................................... 17
Connecting the Pipe at the Outdoor Units ............................................................................... 18
Insulation of the Pipe Joints..................................................................................................... 19
Wiring the Indoor Unit .............................................................................................................. 19
Stranded Wiring ....................................................................................................................... 21
Electrical Wiring ....................................................................................................................... 22
Wiring Precautions .................................................................................................................. 22
Electrical Cable Connection .................................................................................................... 22
Grounding Requirements ........................................................................................................ 23
Installation of Controllers ......................................................................................................... 23
Install the Panel ...................................................................................................................... 24
Installation Checklist ............................................................................................................... 26
Test Operation ......................................................................................................................... 26
Wiring Diagrams ...................................................................................................................... 26
Indoor Unit Dimensions ........................................................................................................... 28
Error Codes ............................................................................................................................. 29
Troubleshooting ....................................................................................................................... 31
General Maintenance .............................................................................................................. 32
Cleaning the Air Inlet Grille ..................................................................................................... 33
Changing the Air Purifier Filters
............................................................................................... 33
Check Before Seasonal Use .................................................................................................. 34
Maintenance After Seasonal Use ............................................................................................ 34
After Sales Service .................................................................................................................. 34