86
EB 5573 EN
Functions of the DHW circuit
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. The thermal disinfection setting for preventing legionella infection has
the following impacts:
−
High return flow temperatures during the disinfection cycle (return flow 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.
Functions
WE
Configuration
Storage tank sensor SF1
1
CO4 > F01 - 1
Thermal disinfection
0
3
00:00
04:00
70.0 °C
10.0 °C
0 min
bE = 1
CO4 > F14 - 1
Day of the week: 1-7, 1, 2, …, 7, with 1-7 = daily, 1 =
Mondy, …, 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
Summary of Contents for TROVIS 5573
Page 144: ...144 EB 5573 EN Key number 1732...
