Flow Temperature Setpoint Limits - Siemens LMS14 User Manual

Flow temp setpoint
min/max
Key
Flow temp setpoint max
Flow temp setpoint min
142/617
Building Technologies Division
6.5.8

Flow temperature setpoint limits

Line no.
HC1 HC2 HC3
740 1040 1340
741 1041 1341
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.
TV
Max.
Act.
740 / 1040 / 1340
Min.
0 10 20
Figure 21: Flow temperature setpoint limits
Line no.
HC1 HC2 HC3
740 1040 1340
741 1041 1341
8744 8774 8803
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.
User Manual LMS14...
6 The settings in detail
Operating line
Flow temp setpoint min
Flow temp setpoint max
8744 / 8774 / 8803
30 40 50 60
Meaning
TVmin Minimum flow temperature setpoint
TVmax Maximum flow temperature setpoint
TVw Flow temperature setpoint 1/2/3
741
1041
1341
°C
70 80 90 100
CC1U7471en
07.05.2014