Frost Protection For The Solid Fuel Boiler; Configuration Errors; Sensor Error - Siemens LMS14 User Manual

Key
Boiler sensor
Comparative sensor
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Building Technologies Division

6.16.7 Frost protection for the solid fuel boiler

Function Frost protection for the boiler ensures that the pump of the solid fuel boiler is
activated when the boiler temperature drops below its Frost protection level (4 °C).
The function cannot be deactivated.
T
8560
5°C
4°C
1
Q10
0
Figure 71: Frost protection for the solid fuel boiler
Line no. Meaning
8560 TFx Solid fuel boiler temperature
Q10 Solid fuel boiler pump
t Time
T Temperature

6.16.8 Configuration errors

A configuration error (error 146) is generated if sensor B22 is connected and boiler
pump Q10 is not parameterized.
A configuration error is generated if a solid fuel boiler diagram is active and DHW
storage tank or Buffer storage tank is selected as the comparative temperature but the
respective diagram is missing.
A configuration error is generated if a solid fuel boiler diagram is active and Flow
temperature setpoint is selected as the comparative temperature and the device
address is >1.

6.16.9 Sensor error

If sensor B22 is not available (short-circuit or interruption), an error message is
generated and the boiler pump is forced to switch on.
If the selected comparative sensor B3, B31, B4 or B41 is not available (short-circuit or
interruption), the minimum setpoint set in the parameters is used for the calculation.
No specific error message is generated when the comparative sensor is unavailable.
An error message might be generated by the comparative sensor itself.
User Manual LMS14...
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28.01.2015