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Building Technologies Division User Manual LMS14... CC1U7471en
6 The settings in detail 07.05.2014
Line no. Operating line
HC1 HC2 HC3
726 1026 1326 Heating curve adaption
Off
On
Adaption of the heating curve is used by the controller to automatically adapt the
heating curve to the prevailing weather conditions. In that case, a readjustment of
heating curve slope and parallel displacement is not required. It can only be switched
on or off.
Note!
To provide this function, following must be observed:
A room sensor must be connected
The Room influence setting must be selected between 1 and 99
No thermostatic radiator valves should be used in the reference room, where the
room sensor is located (if installed, such valves must be fully opened and locked
in that position)
Off
Function is deactivated.
On
Function is activated.
The function is activated via parameter, provided a room sensor is used and the
compensation variant WR (Weather compensation with room influence).
If the required flow temperature is exceeded or is not reached for more than 2 hours, no
adaption is made for that day. With pump heating circuits, the boiler temperature is
used in place of the flow temperature. Heating curve adaption readjusts the heating
curve’s slope and the parallel displacement (heat gains). In Comfort mode (nominal
operating level), the function integrates the room temperature control deviation and
readjusts at midnight the parameters for calculating the heating curve, depending on
the attenuated outside temperature and the learning sensitivity. During boost heating,
the deviation of room temperature control is not taken into consideration. After each
learning step, the learning sensitivity is reduced step by step. If the heating curve’s
slope or parallel displacement (heat gains) is changed, the sensitivity is automatically
set to the maximum. A certain minimum sensitivity is always maintained.
If the attenuated outside temperature is below 4 °C, the heating curve slope is
readjusted through the learning process.
If the attenuated outside temperature lies between 4 °C and 12 °C, heating curve slope
and parallel displacement are readjusted through learning.
If the attenuated outside temperature exceeds 12 °C, the learning process is stopped.
These reference values apply when the comfort setpoint = 20 °C and the heating curve
displacement = 0 °C (no extraneous heat).
Heating curve adaption
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