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Siemens Schweiz AG Benutzerhandbuch RVS61.843, RVS41.813 CE1U2355de_02
HVAC Products 6 Einstellungen im Detail 1. April 2009
B91 Quelle Eintrittstemperatur 2951 Abtaufreigabe unterhalb TA
B84 Verdampfertemperatur 2952 OEM
2953 OEM
Schaltdifferenz Abtauen
Temperaturdiff Abtauen Max
Y22 Prozessumkehrventil 2954 OEM Verdampfertemp Abtau-Ende
K19 Ventilator Quelleneintritt 2959 OEM Abtau Stabilisierungsdauer
K1 Verdichter 1 2962 Dauer Abtausperre
2963 Dauer bis Zwangsabtauen
2965
2966 OEM
Abtropfdauer Verdampfer
Abkühldauer
8477 Temp’diff Abtauen Istwert
8478 Temp’diff Abtauen Sollwert
Bei erfolgreichem Abtauen steigt die Verdampfertemperatur (B84). Übersteigt der
Verdampfer die „Verdampfertemp Abtau-Ende“ (2954 OEM) kann der Abtauprozess
erfolgreich beendet werden und der Verdichter schaltet während der Abtropfdauer
(2965) aus. Anschliessend wird der Heizbetrieb wieder aufgenommen.
Das Abtauen mit Ventilator gilt als beendet, wenn eine der folgenden beiden
Bedingungen erfüllt ist:
Die Temperaturdifferenz (8477) zwischen der eintretenden Aussenluft (B91)
und dem Verdampfer (B84) ist kleiner als von ihrem Lieferanten eingestellt.
Die Abtauzeit bei Abtauung mit Ventilator ist erreicht.
Bei tieferen Aussentemperaturen dauert das Abtauen länger als bei höheren
Aussentemperaturen.
Abtauende bei Abtauung
durch Prozessumkehr
Abtauende bei Abtauung
durch Ventilator
Y22
1
0
K19
1
0
K1
1
0
B91
B84
T
A
[2953]
[2953]
[
2963
]
[
2962
]
[
2959
]
[
2965
]
[
2951
]
[
2954
]
[8478]
[8478]
[
2966
]
[
2963
]
[
2962
]
[2952]
Actual diff ice free
Diff = 0
[8477]
Start Abtauen
Start Abtauen
132


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