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Building Technologies Division User Manual LMS14... CC1U7471en
6 The settings in detail 07.05.2014
6.5.13 Room temperature control and limitation
Line no. Operating line
HC1 HC2 HC3
760 1060 1360 Room temp limitation
Using the Room temperature limitation function, the heating circuit pump can be
deactivated if the room temperature exceeds the current room temperature setpoint by
more than the preset differential. The heating circuit pump is activated again when the
room temperature returns to a level below the current room temperature setpoint. While
the Room temperature limitation function is active, no requests for heat are sent to the
heat source.
Note!
Room temperature limitation does not work with weather compensation alone.
ON
°C
TRx
TRw+SDR
TRw
Figure 23: Room temperature control and limitation
Key
Line no. Meaning
P Pump
SDR Switching differential room
t Time
TRw Room temperature setpoint
TRx Actual value of room temperature
6.5.14 Heating limit room controller
Line no. Operating line
HC1 HC2 HC3
761 1061 1361 Heating limit room controller
In the case of room control alone, the request for heat becomes invalid if the current
flow temperature setpoint request is smaller than the set limit value (x% of maximum
flow temperature setpoint – room temperature setpoint). The request is activated again
when the setpoint called for exceeds the switch-off threshold by more than 8%. The
function can be activated and deactivated.
Note!
If an outside sensor is available, functions 24-hour heating limit and Summer/winter
changeover – if parameterized – can shut down the heating as well.
Room temp limitation
Heating limit room
controller
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