Cold Start Thermal Shock Protection With Temperature Sensor In Pressure Plants - Siemens LMV50 Series Manual

Building Technologies
7.8.3 Cold start thermal shock protection with temperature
sensor in pressure plants
In pressure plants, thermal shock protection can also be implemented with a
temperature sensor (additional sensor), as an alternative to the pressure sensor.
If an additional temperature sensor is installed and activated (Additional Sensor set to
Pt100 or Pt1000 or Ni1000), for the CSTP function the temperature signal from this
additional sensor is used instead of the pressure signal from the boiler controller and
also the temperature setpoint for the additional sensor (Setpoint AddSens) is used.
The parameters ThresholdOn and ThresholdOff are then percentage values from this
temperature setpoint (Setpoint AddSens) of the additional sensor.
Parameter Additional Sensor (deactivated / Pt100 / Pt1000 / Ni1000)
Setpoint AddSens
Temp. ColdStart
Caution!
When using a pressure sensor, the temperature limiter is not active.
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22.05.2018