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6.1.3 Getrennter Verteiler und nachgeschaltete
Mischerkreise mit oder ohne Brauchwasserbereitung
Rücklauftemperaturanhebung mittels kesselseitigem 3-
Wege-Mischer.
Reglervariante:
rematic
K2R-F plus 2 x UM.
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
M2 = Mischer Heizkreis 2
U2 = Umwälzpumpe Mischerkreis 2
HK1 = Heizkreis 1
HK2 = Heizkreis 2
UV = Überströmventil
TV = Thermostatventil
Mr = 3-Wege-Mischer zur Rücklaufanhebung
UM = Folgeregler für Mischerkreis.
Bild 08
Die
rematic
Regelung übernimmt die zweistufige Bren-
nersteuerung, die Pumpenregelung für die Kesselpumpe
(auf Nennwassermenge ausgelegt), sowie die Brauch-
wasserladung.
Über den Rücklauffühler wird die Rücklauftemperatur
überwacht. Wird die zulässige Rücklauftemperatur (siehe
3.1) unterschritten schaltet der Brenner ein, der Mischer
Mr schliesst solange bis die Rücklauftemperatur erreicht
ist. Danach öffnet der Mischer Mr taktend (3-Punkt) und
gibt den Heizbetrieb frei.
Die Temperaturen in den Mischerkreisen 1 und 2 werden
über separate Regeleinheiten
rematic
UM geregelt.
Die Brauchwasserbereitung erfolgt im Vorrangbetrieb bei
geschlossenen Heizungsmischern M1 und M2.
Weitere Mischerkreise werden über zusätzlichen UM-
Regler gesteuert.
15


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