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5.12
Fresh Water at R2
With this function a fresh water function/fresh water station (heating of domestic hot water with the flow
heater principle) is possible. This option for generating domestic hot water has the advantage that
larger quantities of hot water must not be stored for use (legionella problem, heat losses, ...).
The fresh water function is activated in the menu 'Settings -> 'Service' -> 'Functions' -> 'Fresh water at
R2' by pressing the OK button for two seconds (
-->
:
).
Function: By controlling the speed of "pump R2" the solar regulator attempts to keep the hot water
temperature (sensor allocation via “Target temp. at E?“) – irrespective of the volume flowing in the hot
water line – at a constant temperature (Functions
→
Fresh water at R2
→
"aim temperature: x°C") at
the extraction points. If the temperature at "Supply line/st. upp" falls below the value for "aim
temperature" +5 Kelvin, the "aim temperature" will be lowered internally by 5 Kelvin. This should
prevent the storage tank from being mixed. If the temperature at "Supply line/st. upp" rises above the
value for "aim temperature" +5 Kelvin again, the "aim temperature" is increased again internally by 5
Kelvin.
Important: The values "P fallend", "P steigend", "I", "I unten/stg. " record the control behavior
and should not be changed in any event !!!
The sensor inputs "E1 (regulator)" to "E7 (regulator)" are available on the regulator or the inputs "E1 (IOBox)" to "E4 (IOBox)"
are available on each of the four possible add-on devices (for additional IO boxes see ch.9.1).
