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Posted: Tue Nov 14, 2017 8:37am

Post Subject: central heating

My boater neighbor regularly forgets to turn on her 12 volt central heating pump. She is reminded by banging pipes and blowback if she doesn't notice. I'd like to help her by fitting a reliable thermostatic switch to the boiler outlet that will turn on the pump at say, 60c and turn the pump off it temp drops below, say, 45c. Any thoughts of a suitable t'stat that will run the small amperage pump?


Posted: Tue Nov 14, 2017 10:26am

Post Subject: central heating

I would use an ordinary domestic type pipe stat that are readily available from the likes of Screwfix and plumbers' merchants. As it will be designed for AC use there is a possibility that the contacts may burn out so use the pipe stat to control a car type relay that then switches the pump. If you email I will email you a circuit diagram tomorrow.

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