Fujitsu AUXG07-14KVLA - System diagram; Electrical wiring

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System diagram
1 remote controller:
A
Indoor unit
Remote controller
2 remote controllers:
Primary
Secondary
B C
Indoor unit
Remote controllers
A, B, C: Remote controller cable
A ≤ 500 m;B + C ≤ 500 m
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Electrical wiring
1 remote controller:
When there is
a functional
grounding
Remote controller
Indoor unit
Y1
Y1
Y2
Y2
Y3
2 remote controllers:
When there is
a functional
grounding
Remote controller Remote controller
Y1
Y1
Y2
Y2
Y1
Y2
Y3
Indoor unit
Group control:
When there is
a functional grounding
Remote controller
Indoor units
Y2
Y2 Y2 Y2 Y2Y3 Y3 Y3 Y3
Y1
Y1 Y1 Y1 Y1
NOTE:
Group connection with Polar 3-wired remote controller is not allowed.
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14-10. Wired remote controller (UTY-RNRYZ*: Optional part) 14. Remote controller
2-UNIT MULTI-SPLIT TYPE 2-UNIT MULTI-SPLIT TYPE