Full Charging; Frost Protection For The Buffer In Heating Mode - Siemens LMS14 User Manual

Full charging

Full charging temp min
Full charging sensor
Building Technologies Division
6.17.8 Full charging
Line no. Operating line
4810 Full charging
Off
Heating mode
Always
Function Full charging buffer enables released heat sources to switch off only when the
buffer storage tank is fully charged, in spite of automatic heat generation lock. To
perform full charging, function Full charging buffer (2208) must be activated on the heat
sources selected for this purpose. When the function is active, the heat sources
parameterized for Full charging are switched off only when the full charging setpoint is
reached, or when the boilers must be shut down due to burner control.
Off
Function is deactivated.
Heating mode
Full charging becomes active when – due to the buffer storage tank temperature –
automatic heat generation locks the heat sources while the heat request is valid. The
function is ended when the buffer storage tank's sensor parameterized for the function
reaches the required temperature.
Always
Full charging becomes active when – due to the buffer storage tank temperature –
automatic heat generation locks the heat sources while the request for heat is valid, or
when it becomes invalid. The function is ended when the buffer storage tank's sensor
parameterized for the function reaches the required temperature.
Line no. Operating line
4811 Full charging temp min
The buffer storage tank is charged to at least the set level.
Line no. Operating line
4813 Full charging sensor
With B4
With B42/B41
With B4
The Full charging function uses sensor B4.
With B42/B41
The Full charging function uses sensor B42 or, if not available, sensor B41.
6.17.9

Frost protection for the buffer in Heating mode

Frost protection for the buffer storage tank is always active. If one of the 2 storage tank
temperatures at terminal B4 and B41 drops below 5 °C, the storage tank generates a
valid request for heat until both storage tank temperatures have exceeded 10 °C.
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6 The settings in detail
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CC1U7471en
28.01.2015