The minimum room temperature control becomes active, when during un-occupied periods the room temperature drops below the value of the room temperature setpoint set in the time schedule. In this case, the heating circuit is re-started and calculates the mixed water temperature setpoint depending on the heating curve characteristics, outside air temperature and the actual un-occupied room temperature setpoint. This function is an alternative for minimum room temperature protection whereby always maximum capacity is used. To enable minimum room temperature control, set P24 lower than the value of the room temperature setpoint during un-occupied periods.
Fig. 8. Minimum room temperature control
Table 7. Parameter List
Description |
Value Range |
Default Value |
Unit |
|
MWT-03: maximum mixed water temperature |
0...150 |
82 |
°C |
|
RMT-02: minimum room temperature |
0...20 |
13 |
°C |
|
RMT-03: differential minimum room temperature |
0...5 |
2 |
K |