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Back Wiring
The JVRCM270 has six M-net ports, one LAN port, one USB extension port and six reserved
IO ports. It can connect to the MCAC central air conditioning system through the M-net ports
and connect to the local area network through the LAN port. You may use a browser on a
computer or other similar devices to access the JVRCM270 to monitor the VRF unit .
!
Caution
The JVRCM270 is installed at one end of the M-net communication bus. Do not
install it in the middle of the bus.
You need a three-core shielded cable of 0.7~1.0 mm
For details, please consult a professional technician.
Risk of explosion if battery is replaced by an incorrect type
Dispose off user battery according to the instruction.
(correct battery type is CR1220)
X1
X2
Y5
X6 Y6
DI1
DI2
NC
DO1
5
DO2
NC
AI1
AI2
NC
for the signalling wires.
2
Figure 1.5
V.1
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