indoor bus line
central bus line
Select central bus line, master central controller, control range is 00, so the dip switch is 1 0 0 0 (default)
Select indoor bus line, master central controller, control range is 00, so the dip switch is 0 0 0 0.
1.9.7. Can set the central control unit as a group, and the max. 64 units of indoor can be set a group.
After setting unit, the indoor in one group can be controlled the same operation (when out of factory, one
unit is regarded as one group).
1.9.8. Control function
1. Features and functions of central controller
Central controller control(ICR01) diagram is as below:
connecting board 1
connecting board ...
For installation, connect communication wires from central controller ICR01 port B-A,B-A, to connecting board IGU04. and then connect
communication wires from IGU04 P,Q to outdoor or indoor unit communication port P,Q. Notice, the default position of ICR01 dip switch
is 1 0 0 0, the address of IGU04 and the indoor address must be set in different number.
When one central controller control one air condition system, also can directly connect wires from ICR01 B-A,B-B port to P, Q port of
outdoor or indoor communication port.
10: 129~192 11: 193~256
Figure 5 Central unit and group diagram
Figure 6 MRV II central control system diagram
Commercial Air Conditioner
max. 16 indoors
unit 64 (max. 64 units)