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Siemens Basisdokumentation RVP340, RVP350, RVP351 CE1P2545de
Building Technologies 18 Funktionsblock: Solar Brauchwasser 15.03.2011
18.3 Funktionen
18.3.1 Temperaturdifferenz Ein/Aus Solar
Auf den Bedienzeilen 201 und 202 wird die Temperaturdifferenz zum Ein- und Aus-
schalten der solaren Brauchwasserladung eingestellt.
Für die Ladung des Speichers braucht es eine genügend grosse Temperaturdiffe-
renz zwischen Kollektor und Brauchwasserspeicher; zudem muss der Kollektor die
minimale Ladetemperatur erreicht haben.
ON
OFF
SD
OFF
SD
ON
TLmin
TKol Kollektortemperatur TSp Speichertemperatur
ON/OFF Kollektorpumpe TLmin Minimale Ladetemperatur
SD
ON
Temperaturdifferenz EIN T Temperatur
SD
OFF
Temperaturdifferenz AUS t Zeit
Steigt die Kollektortemperatur um die Einschaltdifferenz über die aktuelle
Speichertemperatur, wird der Speicher geladen:
TKol > TSp + SD
ON
Sinkt die Kollektortemperatur unter die Ausschaltdifferenz, wird der Speicher
nicht mehr geladen:
TKol < TSp + SD
OFF
18.3.2 Minimale Ladetemperatur
Die Kollektorpumpe wird nur in Betrieb genommen, wenn der Kollektor eine
Mindesttemperatur von 30 °C aufweist und die geforderte Temperaturdifferenz
erreicht ist.
ON
OFF
TLmin 30 °C
TKol Kollektortemperatur TLmin Minimale Ladetemperatur
ON/OFF Kollektorpumpe T Temperatur
SD
ON
Temperaturdifferenz EIN t Zeit
SD
OFF
Temperaturdifferenz AUS
Liegt die Kollektortemperatur unter der minimalen Ladetemperatur, wird die
Ladung abgebrochen (auch wenn die Einschaltdifferenz erfüllt ist):
TKol < TLmin
Liegt die Kollektortemperatur um die Schaltdifferenz (SD
ON
– SD
OFF
) über der
minimalen Ladetemperatur (und die geforderte Einschaltdifferenz ist erfüllt),
wird geladen:
TKol > TLmin + (SD
ON
– SD
OFF
)
83


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