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94-RTH-BA.D/12.05 1
1 Verwendungszweck
1.1 Thermostat Typ 4250 und 4251 für konventionelle Stellantriebe
Diese Thermostaten (Raumtemperaturregler) dienen zur Regelung der Temperatur in
geschlossenen Räumen wie Wohnungen, Schulen, Werkstätten usw.
Der Typ 4250 ist mit einem Umschaltkontakt für die Ansteuerung eines einzelnen Hei-
zungskreises oder von zwei verschiedenen Stellantrieben (z. B. Heizung/Kühlung) ver-
sehen.
Der Typ 4251 erlaubt die Ansteuerung eines einzelnen Heizungskreises und ist zudem
mit einem Netzschalter (Ein/Aus) sowie mit einem Eingang für Temperaturabsenkung
(z. B. mittels Schaltuhr) versehen.
Die Thermostaten der Typen 4250 und 4251 sind nicht geeignet in Kombinationen mit
Geräten, welche Eigenwärme abgeben, da dies zu Fehlschaltungen führen kann.
1.2 Thermostat Typ 4271 und 4272 für elektrische Bodenheizungen
Diese Thermostaten werden zur Regelung von elektrischen Fussbodenheizungen und
Bodentemperiersystemen verwendet.
Der Typ 4271 ist mit einem Eingang für Temperaturabsenkung (z. B. mittels Schaltuhr)
versehen.
Der Typ 4272 verfügt für die Temperaturabsenkung über eine interne Schaltuhr (Timer).
5


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