Samson trovis 5600, Mounting And Operating Instructions

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7.8 Forced charging of the DHW storage tank
To provide the full room heating performance when the time-of-use of the heating circuit begins,
storage tanks are charged one hour before the time-of-use of the heating circuit starts.
For the individual controller, this means that storage tank charging is activated when the water
temperature in the storage tank falls below the deactivation value of T = 'DHW day set
point' + 'Hysteresis'.
The forced charging of the storage tank does not take place when the DHW circuit is not used at
the beginning of the time-of-use programmed for the heating circuit.
Note: This function is not available when a storage tank thermostat is used.
7.9 Thermal disinfection of the DHW storage tank
In all systems with DHW heating in storage tank system or in storage tank charging system, a
thermal disinfection is performed on the selected 'Day of week for thermal disinfection' or daily
(by selecting 8). The DHW storage tank is heated up to the adjusted 'Disinfection temperature'
taking the 'Charging temperature boost' parameter (or function block parameter 'Thermal dis-
infection boost' depending on the system) into account. Disinfection begins at the adjusted 'Start
time of thermal disinfection' and, at the latest, ends at the specified 'Stop time of thermal disin-
fection'. The 'Disinfection temperature sustaining time' determines how long the disinfection
temperature must be maintained within the adjusted time period to rate the process successful. If
the 'Disinfection temperature sustaining time' is set to 0 min, no intermediate heating operation
takes place during thermal disinfection.
Alternatively, the thermal disinfection can be started over an binary signal to S4. When 'Day of
week for thermal disinfection' is set to 9 or 10, the start and stop times do not need to be en-
tered.
4
When 'Day of week for thermal disinfection' is set to 9, the thermal disinfection starts when
the binary input closes and stops when the binary input opens.
4
When 'Day of week for thermal disinfection' is set to 10, the thermal disinfection starts when
the binary input opens and stops when the binary input closes.
When the 'Disinfection temperature' has not been reached before the end of the thermal disin-
fection cycle, the 'Disinfection stopped' error message is generated. This error message can
also be generated prematurely if the remaining time until the disinfection temperature is
reached is shorter than the adjusted 'Disinfection temperature sustaining time'. The error mes-
sage is automatically reset when the 'Disinfection temperature' is properly reached during the
following thermal disinfection cycle.
78
EB 5610 EN
Functions of the DHW circuit