Fujitsu AUU7RLF Design & Technical Manual page 38

 System diagram
1 remote controller
Indoor unit
A
Remote controller
 Electrical wiring
1 remote controller
Indoor unit
Remote
controller
1 2 3
1 2 3
Remote controller
2 remote controllers
Indoor unit
B C
Primary Secondary
Remote controllers
1 (Red): 12 V
2 (White): Signal
3 (Black): COM
- 32 -
A, B, C: Remote controller cable
A≤1,640 ft (500 m);B+C≤1,640 ft (500 m)
2 remote controllers
Indoor unit
Remote
controller
1 2 3
1 2 3 1 2 3
Secondary
Primary
Remote controllers
1 (Red): 12 V
2 (White): Signal
3 (Black): COM