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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
Line no. Operating line
5473 Pump overrun time keep hot
Here, set the period of time (in seconds) the pump still runs on burner shutdown during
the Keep hot function.
Note!
The effective pump overrun time is obtained by adding up Pump overrun time keep
hot (5472) and Pump overrun time keep hot (5473).
Line no. Operating line
5475 Control sensor keep hot
Boiler sensor B2
Return sensor B7
DHW outlet sensor B38
Select the control sensor (2-position controller) for the Keep hot function.
Boiler sensor B2
The burner is switched on and off based on a temperature comparison with the boiler
temperature.
Return sensor B7
The burner is switched on and off based on a temperature comparison with the boiler
return temperature.
DHW outlet sensor B38
The burner is switched on and off based on a temperature comparison with the DHW
outlet temperature.
6.21.5 Times
Line no. Operating line
5482 Flow switch time cons
This parameter is used to define the minimum response time of the flow switch for
detecting consumption.
6.21.6 Overrun
Line no. Operating line
5489 Overrun via Inst WH
No
Yes
Parameter Overrun via Inst WH (5489) is used to select whether the boiler’s residual
heat shall be fed to the heat exchanger of the instantaneous water heater or to the
heating circuit.
No
The boiler’s residual heat is supplied to the heating circuit.
Yes
The boiler’s residual heat is supplied to the heat exchanger of the instantaneous water
heater.
Pump overrun time keep
hot
Control sensor keep hot
Flow switch time cons
Overrun via InstWH
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