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EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY)
6 720 644 593 (2010/04)
•
The length of the piping runs for thermal disinfection must be kept as short as possible (preheat
cylinder located in close proximity of standby cylinder).
•
The temperature of the standby cylinder must not drop below the 60-degree limit.
•
Hot water circulation must be switched off during thermal disinfection of the preheating stage (no
return from circulation to standby cylinder).
•
If the standby cylinder (central heating system) programmer has a “Thermal disinfection” function:
the time window for that function must start a certain amount of time before (e.g. 0.5 h) the time
window for the thermal disinfection of the preheat cylinder (synchronisation of time windows).
•
The hysteresis for the programmer must be observed (required hysteresis = 5 K).
•
The programmer for the standby cylinder must be set so that domestic hot water takes priority.
•
Thermal disinfection of the preheating stage must be scheduled for times without hot water
demand.
9.5.30 Thermal disinfection target temperature
Menu: Expert menu > Settings > E: Therm. disinfection > Target temp.
This setting determines the temperature for thermal disinfection.
9.5.31 Thermal disinfection time setting
Menu: Expert menu > Settings > E: Therm. disinfection > Start time
This setting determines the start time for thermal disinfection. Thermal disinfection runs for a
maximum of 3 hours.
Setting range
Default setting
New setting
On, Off
Off
Setting range
Default setting
New setting
60 - 70 °C
60 °C
WARNING:
risk of scalding due to water temperatures over 60 °C!
B
Only schedule thermal disinfection for periods outside normal usage times.
B
Inform the occupants of the premises of the times for thermal disinfection.
Setting range
Default setting
New setting
00:00 h - 23:59 h
00:00 h
