2
Scope of supply
Basic device with 2 temperature sensors,
Cable fastener, adhesive fabric tape,
Operating Manual
Functional description
The circulation controller
CIRCON
is a modern, microcontroller-controlled device for activating the
circulation of hot water in a heating system depending on consumption.
Two temperature sensors monitor the changes in the flow and return temperatures in the circulation circuit.
When water is withdrawn from the cooled down circuit, hot water rises from the heat storage tank into the
flow pipe so that the pipe heats up rapidly. The temperature rise signals to
CIRCON
that water has been
withdrawn, causing it to start the circulation pump. Thus, just briefly opening a hot-water tap at any point
in the circuit will suffice for initiating circulation. Circulation stops automatically after a predetermined
operating time is reached or after the water in the return pipe has also become sufficiently heated,
whatever occurs earlier. If no return-line sensor has been connected, circulation always is switched off
after the predetermined operating time.
In case of excess temperature of the water in the flow pipe, starting of the circulation pump is prevented.
To avoid the multiplication of Legionella and putrefaction, the circulation pump is automatically activated
once after every 48 hours during periods in which no water has been withdrawn.
Controls and indicators
All operating states are signalled via three coloured LEDs:
Flashing light green: Basic device ready for operation, flow and return temperatures are monitored.
Steady light yellow: Circulation pump is on.
Steady light red:
Excess temperature in flow pipe.
Flashing light red:
Flow-pipe sensor fault (not connected, line interruption or short-circuit)
