The controller requires a 240 Volt single phase 3 Amp power
supply, which connects directly to the mains input terminals on
the rear of the device.
The two-core network cable should be screened
and have a minimum cross-sectional area of 1.5mm for networks of
up to 1000 meters. This should be increased to 2.5mm for
networks of 1000 to 2000 meters total length. The network cable
terminates at the U1/U3 and U2/U4 connections on the rear of the
device.
Terminals A1, A2 and A3 are used to remotely
operate all of the connected indoor units.
The indoor units can be enabled with a pulse
voltage of 24 Volts applied for 0.5 seconds between terminals
A1-A3 and disabled by applying the same voltage between
terminals A2-A3.
Terminals B1, B2 and B3 provide dry contact
outputs for connection to other systems. A relay contact will
close between B3 and B1 indicating system operation and B3 and
B2 indicating a fault on any connected units.
Terminal CN02 can be used to connect a 7day
timer (RBC-EXW21E) or alternatively the RBC-SMTI interface lead
can be connected and used as a means of remote switching.
