Samson TROVIS 5573 - Page 147

EB 5573 EN 16-65
Appendix A (conguration instructions)
When 'Start time' and 'Stop time' are set to an identical time, disinfection is controlled de-
pendingontheswitchingstateofthebinaryinput(terminals03/12)tobeperformeddaily
or on the programmed day of the week: disinfection starts optionally with a break contact (BI
=0)oramakecontact(BI=1).Theprocessstopsatthelatestwhentheswitchingstateofthe
binary input next changes.
When the 'Disinfection temperature' has not been reached before the end of the thermal dis-
infection cycle, an “Err 3“ error message is generated. This error message can also be gener-
ated prematurely if the remaining time until the disinfection temperature is reached is shorter
than the adjusted 'Disinfection temperature sustaining time'. The error message is automati-
cally reset when the disinfection temperature is properly reached during the following ther-
mal disinfection cycle.
Thermal disinfection for preventing legionella infection has the following effect:
− Highreturnowtemperaturesduringthedisinfectioncycle(returnowtemperaturelim-
itation suspended)
− High DHW temperatures after thermal disinfection has been concluded
− Possibly lime scale, which can have a negative effect on heat exchanger performance.
− This function is not available when a storage tank thermostat is used.
− The forced operation of the circulation pump (DHW) starts while thermal disinfection is ac-
tive.
Functions Default Conguration
Storage tank sensor SF1 1 CO4->F01-1
Thermal disinfection 0
3
00:00
04:00
70.0°C
10.0°C
0min
BI=1
CO4->F14-1
Dayoftheweek:1-7,1,2,…,7,with1-7=daily,1=
Monday,…,7=Sunday
Starttime:00:00to23:45h;instepsof15minutes
Stoptime:00:00to23:45h;instepsof15minutes
Disinfectiontemperature:60.0to90.0°C
Setpointboost:0to50°C
Disinfectiontemperaturesustainingtime:0to255min
BI=1,BI=0(startofdisinfectionwithterminal03/12=
ON,OFF;onlyapplieswhenStarttime=Stoptime)
Note