This Ideal thermistor kit contains a lead and O-ring and is designed for compatibility with Evo, Icos, Isar, Mexico, Elise, Esprit, Esprit 2 and Istor boilers. The 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 gas-safe certificate plumber.
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This product fits the following appliances:
This part is superseded by: 174087
• ESPRIT HE24
• ESPRIT HE30
• ESPRIT HE35
• EVO HE C22/24
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