Connections Between Odu And Idu; Power Cable Connections - Midea CCM-270A/WS Service Manual

CCM-270A/WS

1.4 Connections between ODU and IDU

Connect the IDU and ODU following the respective installation manuals. Connect XYE from the master ODU to XYE port of
CCM-270A/WS.
Important Points:
1. In case where one port is connected to multiple systems, make sure that the system address, IDU address and ODU
network address on the same bus do not overlap.
2. The linear order of the ports is XEY from left to right. Each port supports 64 IDUs and 8 refrigerant systems at most.

1.5 Power Cable Connections

We need to make sure that the power supply has been provided to the CCM-270A/WS. If the power supply is not there we
cannot perform the further operations such as searching the units. The power cable is not provided as a standard
accessory with the box. The user needs to purchase the power cable from the market himself. The specifications are as
follows:
(Power Port for CCM-270A/WS)
The power cable of the adaptor needs to be connected by a 3 port terminal into the terminal labelled RC on the back side
of the CCM-270A/WS touch screen centralized controller. The power terminal pin sequence is R, C and null from left to
right.
After making the connections for power cable, switch ON the power. If the connections are correct, you will land to the
boot screen for the device.
26
Specification
Power Supply
Input Current
Description
24V AC
1000 mA
(3 port Terminal)
201807