The minimum room temperature protection ensures a minimum room temperature condition during un-occupied periods. If the room temperature drops below the value of the setting RMT-02, the mixed water temperature setpoint is set to the value Tprot. Tprot can be adjusted with parameters RMT-02 and RMT-03 to avoid heating with the maximum mixed water temperature.
Tprot = HC (RMT-02 + RMT-03 + 2K, FilteredOATemp, HCA-01, HCA-02)
The minimum room temperature protection function ends, if the room temperature has been increased by the differential RMT-03 above RMT-02. Next figure shows the minimum room temperature protection function.
Fig. 9. Minimum room temperature protection
Table 6. 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 |