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6.1.5 Getrennter Verteiler und nachgeschalteter
Mischerkreis - mehrere Heizkreise bei gleicher
Temperaturauslegung
Reglervariante:
rematic
K2M-F.
Bild 10
Die
rematic
Regelung übernimmt die zweistufige Bren-
nersteuerung, die Pumpenregelung für die Kesselpumpe
( 30% der Nennwassermenge), sowie die Mischerregel-
ung für den Mischerkreis 1.
Über den Rücklauffühler wird die Rücklauftemperatur
überwacht. Wird die zulässige Rücklauftemperatur (siehe
3.1) unterschritten schaltet der Brenner ein, der Heizung-
mischer M1 schliesst solange bis die Rücklauftemperatur
erreicht ist. Danach öffnet der Mischer M1 taktend (3-
Punkt) und regelt die Vorlauftemperatur im Mischerkreis
entsprechend der am Regelgerät
rematic
eingestellten
Heizkurve. Die nachgeschalteten Heizkreise werden alle
auf dem gleichen Temperaturniveau betrieben.
Legende:
AF (Ba)= Aussentemperaturfühler
KF (Bk)= Kesseltemperaturfühler
RF (Br) = Rücklauftemperaturfühler
VF (Bv)= Vorlauftemperaturfühler
BF (Bb)= Boilerfühler
Uw = Kesselpumpe/Umwälzpumpe Wärme-
erzeuger
BLP = Boilerladepumpe
M1 = Mischer Heizkreis 1
U1 = Umwälzpumpe Mischerkreis 1
HK = Heizkreis
UV = Überströmventil
TV = Thermostatventil
Mr = 3-Wege-Mischer zur Rücklaufanhebung.
17


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