
24
Settings Heating circuit
Caution
The additional heating (relais R5) is started when the
fl
ow temperature
(in case of 2 heat circuits: one of the
fl
ow temperatures)is below the
reference
fl
ow temperature for 5 minutes continously.
Switch on hysteresis for additional heating
This setting determines the allowed undershoot of the heat circuit temperature under
the calculated reference
fl
ow temperature. If the heat circuit
fl
ow temperature falls
below the reference temperature by this value, the additional heating (R5) is activated
after a delay of 1 minute.
Settings range: -10°C to 10°C / Default: -2°C
5.7 Reference/actual -
Switch off hysteresis (only if S4 is connected)
This settings determines the allowed overstepping of the heat circuit temperature
to the calculated reference
fl
ow temperature at sensor 4. If the temperature at S4
exceeds the reference
fl
ow temperature by this value, the additional heating (R5) is
switched off.
Settings range: 1°C to 10°C / Default: 2°C
5.8 Reference/