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 .......................................................................................................................................... 13
5.1 Indoor Units ............................................................................................................................... 13
5.2 Outdoor Units ............................................................................................................................ 17
6. Installation details ...................................................................................................................................... 25
6.1 Wrench torque sheet for installation .......................................................................................... 25
6.2 Connecting the cables ............................................................................................................... 25
6.3 Pipe length and the elevation .................................................................................................... 26
6.4 Installation for the first time........................................................................................................ 27
6.5 Adding the refrigerant after running the system for many years ................................................ 30
6.6 Re-installation while the indoor unit need to be repaired ........................................................... 31
6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 33
7. Operation characteristics ......................................................................................................................... 35
8. Electronic function .................................................................................................................................... 36
8.1 Abbreviation .............................................................................................................................. 36
8.2 Display function ......................................................................................................................... 36
8.3 Main Protection ......................................................................................................................... 37
8.4 Operation Modes and Functions ............................................................................................... 37
9. Troubleshooting ......................................................................................................................................... 49
9.1 Indoor unit error display ............................................................................................................. 49
9.2 Diagnosis and Solution .............................................................................................................. 50
