Indoor Units; Available Ports - Hitachi RCI Service Manual

6 Optional functions

6.1 Indoor units

6.1.1 Available ports

The system has eight optional input signals and six output signals. Both types of signal are programmed into the indoor unit
PCB: connector CN3 for input signals and connectors CN7 and CN8 for output signals.
Output connector CN7 has two ports and output connector CN8 has one port, which are used to configure three output
options of the eight available in the system.
N O T E
The output signal connection is a mere example.
The system has the following input and output ports:
Indication
Inlet
Outlet
The system has the following input connections:
Indication
i1
i2
182
SMGB0063 rev. 1 - 10/2010
Port setting on the
indoor unit PCB
CN3 1-2
i1
CN3 2-3
i2
o1 CN7 1-2
CN7 1-3
o2
CN8 1-2
o3
Remarks
Connections
Outlet
Contact
Contact
12 Vdc
12 Vdc
12 Vdc