Fujitsu AUYG07LVLA Design & Technical Manual page 196

¢ System diagram
1 remote controller:
Indoor unit
A
Remote controller
¢ Electrical wiring
1 remote controller:
Y1
When there is
a functional
grounding
Group control:
When there is
a functional grounding
NOTE: Group connection with Polar 3-wired remote controller is not allowed.
2 remote controllers:
Indoor unit
B C
Primary Secondary
Remote controllers
Indoor unit
Y2 Y3
Y1
Y2
Remote controller
Y1 Y2 Y3
Y1
Y2
Remote controller
A, B, C: Remote controller cable
A ≤ 500 m;B + C ≤ 500 m
2 remote controllers:
Y1 Y2 Y3
When there is
a functional
grounding
Y1
Y2
Remote controller
Indoor units
Y1 Y2 Y3 Y1 Y2 Y3
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Indoor unit
Y1
Y2
Remote controller
Y1 Y2 Y3