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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.
Setting range
On, Off
9.5.30 Thermal disinfection target temperature
Menu: Expert menu > Settings > E: Therm. disinfection > Target temp.
This setting determines the temperature for thermal disinfection.
Setting range
60 - 70 °C
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.
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
00:00 h - 23:59 h
Default setting
Off
Default setting
60 °C
Default setting
00:00 h
6 720 644 593 (2010/04)
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY)
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