A Saunier Duval DHW flow sensor for Xtrafast, Themaclassic, Isofast, Isomax, Isotwin, Themaplus, Xtramax and Thema boilers. The sensor or thermistor decreases circuit resistance in line with temperature increases. A boiler’s printed control board (PCB) sends a current to the thermistor, deciding whether a decrease or increase in heat is required by reading the relative resistance.
Please always refer to the manufacturer’s instructions for the correct application. All parts should be fitted by a qualified plumber.
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This part supersedes: 05720200, 57202, 5720200, S57202
Suitable for following appliances:
• Condens F35E
• F 24 E
• Plus F 30 E
• F 28 E
• Condens F 24 E
• Condens F 30 E
• F 30 E
• F 35 E
• Plus F 24 E
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