
CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning ......................................................................................................................................... 1
2. Function ........................................................................................................................................................ 5
3. Dimension .................................................................................................................................................... 6
3.1 Indoor Units ................................................................................................................................... 6
3.2 Outdoor Units ................................................................................................................................ 8
4. Refrigerant Cycle Diagram ......................................................................................................................... 9
5. Installation details ..................................................................................................................................... 10
5.1 Wrench torque sheet for installation ........................................................................................... 10
5.2 Connecting the cables ................................................................................................................ 10
5.3 Pipe length and the elevation ...................................................................................................... 11
5.4 Installation for the first time ......................................................................................................... 12
5.5 Adding the refrigerant after running the system for many years ................................................ 16
5.6 Re-installation while the indoor unit need to be repaired ........................................................... 17
5.7 Re-installation while the outdoor unit need to be repaired ......................................................... 19
6. Operation characteristics ......................................................................................................................... 22
7. Electronic function .................................................................................................................................... 23
7.1 Abbreviation ................................................................................................................................ 23
7.2 Display function ........................................................................................................................... 23
7.3 Main Protection ........................................................................................................................... 24
7.4 Operation Modes and Functions ................................................................................................. 25
8. Troubleshooting ......................................................................................................................................... 30
8.1 Indoor unit error display .............................................................................................................. 30
8.2 Diagnosis and Solution ............................................................................................................... 31