If one of the DHW sensors (the upper and lower sensors) does not reach the anti-legionella setpoint within the appropriate time, an alarm is generated at the output "DHWS_Leg_Alm" and the anti-legionella function will be stopped. This alarm can be reset via the internal reset point or by restarting the anti-legionella function.
In case of anti-legionella alarm (DHWS_Leg_Alm = 1) the operation mode will display the value "6" until no higher priority (> 6) operation mode occurs.
Table 13. Parameter List
Description |
Range |
Default |
Units |
UWT-01: P-band buffer temperature control |
1...20 |
5 |
K |
LEG-01: anti-legionella setpoint |
0...90 |
70 |
°C |
LEG-02: time to reach legionella setpoint; 0 =disable |
0...3600 |
1800 |
sec |
LEG-03: legionella duration |
0...3600 |
600 |
sec |