Fujitsu ARXG24KMLA - Part 3. SYSTEM DESIGN

Part 3. SYSTEM DESIGN...................................................................83
1. Installation precautions..............................................................................84
1-1. Indoor unit installation precautions.................................................................................84
1-2. Outdoor unit installation precautions..............................................................................87
2. Pipe design..................................................................................................88
2-1. Important items when using refrigerant (R32) ................................................................88
2-2. Piping limitation..............................................................................................................89
2-3. Pipe size ........................................................................................................................94
2-4. Selection of pipe heat insulating material.......................................................................96
2-5. Additional charge calculation .........................................................................................97
3. Pipe installation.........................................................................................101
3-1. Caution of piping ..........................................................................................................101
3-2. Piping to outdoor unit ...................................................................................................103
3-3. Pipe connection ...........................................................................................................104
3-4. Branch pipes................................................................................................................107
4. Wiring design ............................................................................................114
4-1. Precaution for electrical wiring .....................................................................................114
4-2. Power supply cable wiring............................................................................................116
4-3. Control patterns ...........................................................................................................122
5. System setting...........................................................................................126
5-1. Indoor unit setting ........................................................................................................126
6. External input and output.........................................................................129
6-1. Indoor unit....................................................................................................................129
6-2. Outdoor unit .................................................................................................................135
7. Remote controller (Optional part)............................................................139
7-1. Wireless remote controller (UTY-LNTY).......................................................................139
7-2. IR receiver kit with Wireless remote controller (UTY-LBTYM)......................................141
7-3. Wired remote controller (UTY-RNNYM).......................................................................144
7-4. Wired remote controller (UTY-RVNYM) .......................................................................147
7-5. Simple remote controller (UTY-RSNYM)......................................................................154
8. Function settings .....................................................................................157
8-1. Outdoor unit .................................................................................................................157
8-2. Compact cassette type (setting by DIP switch) ............................................................161
8-3. Slim duct type (setting by DIP switch)..........................................................................163
8-4. Duct type (setting by DIP switch) .................................................................................165
8-5. Indoor unit (setting by wireless remote controller)........................................................167
8-6. Indoor unit (setting by wired remote controller) ............................................................173
8-7. Indoor unit (setting by simple remote controller) ..........................................................179
8-8. Function details............................................................................................................183
8-9. Wired remote controller (UTY-RNNYM).......................................................................189
8-10. Wired remote controller (UTY-RVNYM) .....................................................................191
CONTENTS (continued)