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Siemens Basisdokumentation RVP340, RVP350, RVP351 CE1P2545de
Building Technologies 17 Funktionsblock: Servicefunktionen und allgem. Einstellungen 15.03.2011
17.4 Hilfsfunktionen
17.4.1 Anlagenfrostschutz
Die Anlage kann gegen Frost geschützt werden. Bedingung ist, dass Regler und
Wärmeerzeugung betriebsbereit sind (Netzspannung!).
Einzustellen sind:
die aktuelle Aussentemperatur, bei welcher der Frostschutz ansprechen muss
die Vorlauftemperatur, welche durch die Frostschutzfunktion im Minimum gehal-
ten werden muss
T
A
2524D04
ON
OFF
0,5 °C
BZ 167
0,5 °C
BZ167
T
A
OFF
ON
Bedienzeile 167
Aussentemperatur
Frostschutz AUS
Frostschutz EIN
Sinkt die aktuelle Aussentemperatur unter den Grenzwert (Einstellung auf Bedien-
zeile 167 minus 0,5 °C), so schaltet der Regler die Heizkreispumpe M2 ein und
regelt die Vorlauftemperatur auf den eingestellten Vorlaufsollwert für den Anlage-
frostschutz (Bedienzeile 168).
An den Wärmeerzeuger wird eine entsprechende Anforderung gestellt.
Ausgeschaltet wird die Regelung, wenn die Aussentemperatur um 0,5 °C über den
Grenzwert angestiegen ist.
Der Anlagenfrostschutz kann deaktiviert werden (Einstellung "--.-" auf Bedienzeile
167).
75


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