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9.4 R/C communication wiring
R/C communication wiring is connect the wire to the terminal block R1/R2 , it connect between the indoor
units and must according to following rules:
1.Up to 16 indoor units can be connected in one R/C communication wiring;
2.All of indoor units must be in L link type;
3.Up to one LWC/LWCS can be connected in one indoor unit;
4.Up to two LWC/LWCS can be connected in one R/C communication wiring;
5.If a LWCS is connected in the R/C communication wiring, all the indoor units must be of the same one
user address.
6. R/C communication wiring shall not be explored to sun light or UV.
7. R/C communication wiring can’t be tied together with power supply wiring.
LWC:local wiring controller.
LWCS:simple version for local wiring controller.
Wiring example:
one outdoor unit connect with five indoor unit
(1) Only one R/C communication wiring in a refrigerant system:
Two twisted wires
Indoor
unit A
Indoor
unit B
Indoor
unit C
Indoor
unit D
Indoor
unit E
Master LWC
Slave LWC(Optional)
Chart 35
(2) More than one R/C communication wiring in a refrigerant system:
Two twisted wires
Indoor
unit A
Indoor
unit B
Indoor
unit C
Indoor
unit D
Indoor
unit E
Master LWC
Slave LWC(Optional)
Chart 36
9 fIeLD wIrING
