Glow-worm Thermisters

Also known as a NTC temperature sensor, they monitor the temperature of the central heating water and also the domestic hot water within the Glow-worm boiler. Once a pre-set temperature is reached either on the central heating or hot the water, the sensors send a signal to the main pcb which in turn reduces the amount of gas that is being delivered to the burner hence reducing the amount of gas being used and making the Glow-worm boiler more efficient.

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