
CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution..........................................................................................................................1
1.2 Warning.........................................................................................................................................1
2. Function........................................................................................................................................................ 6
3. Dimension .................................................................................................................................................... 9
3.1 Indoor Units...................................................................................................................................9
3.2 Outdoor Units...............................................................................................................................11
4. Refrigerant Cycle Diagram ....................................................................................................................... 12
5. Wiring Diagram .......................................................................................................................................... 14
5.1 Indoor Units................................................................................................................................. 14
5.2 Outdoor Units.............................................................................................................................. 17
6. Installation details...................................................................................................................................... 21
6.1 Wrench torque sheet for installation........................................................................................... 21
6.2 Connecting the cables ................................................................................................................ 22
6.3 Pipe length and the elevation .....................................................................................................23
6.4 Installation for the first time.........................................................................................................24
6.5 Adding the refrigerant after running the system for many years ................................................ 27
6.6 Re-installation while the indoor unit need to be repaired ...........................................................28
6.7 Re-installation while the outdoor unit need to be repaired.........................................................30
7. Operation characteristics ......................................................................................................................... 33
8. Electronic function .................................................................................................................................... 34
8.1 Abbreviation ................................................................................................................................ 34
8.2 Display function........................................................................................................................... 34
8.3 Main Protection........................................................................................................................... 35
8.4 Operation Modes and Functions................................................................................................. 36
9. Troubleshooting......................................................................................................................................... 50
9.1 Indoor Unit Error Display............................................................................................................. 50
9.2 Diagnosis and Solution...............................................................................................................51