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Building Technologies Division User Manual LMS14... CC1U7471en
6 The settings in detail 07.05.2014
6.5.8 Flow temperature setpoint limits
Line no. Operating line
HC1 HC2 HC3
740 1040 1340 Flow temp setpoint min
741 1041 1341 Flow temp setpoint max
Using this limitation, a temperature range for the flow temperature setpoint can be
defined. If the flow temperature setpoint called for by the heating circuit reaches the
relevant limit and the request for heat increases or decreases, the flow temperature
setpoint is maintained at the maximum or minimum limit.
0 10 20 30 40 50 60 70 80 90 100
TV
Max.
Min.
Act.
°C
8744 / 8774 / 8803
740 / 1040 / 1340
741
1041
1341
7471z85e/0311
Figure 21: Flow temperature setpoint limits
Key
Line no. Meaning
HC1 HC2 HC3
740 1040 1340 TVmin Minimum flow temperature setpoint
741 1041 1341 TVmax Maximum flow temperature setpoint
8744 8774 8803 TVw Flow temperature setpoint 1/2/3
The calculated flow temperature setpoint is limited according to the setting made. The
limitation is active in all operating modes. Even forced signals cannot push the flow
temperature setpoint above that level.
Warning!
Maximum limitation is not a safety function. If the flow temperature exceeds this
limit, the heating circuit pump will not be deactivated.
The flow temperature setpoint is limited according to the setting made. This also applies
to heat requests made to the heat sources.
Flow temp setpoint
min/max
Flow temp setpoint max
Flow temp setpoint min
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