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home Fix label Heating label_important Home Heating Systems category Worcester

Why does my boiler self charge?

Hi I/ve got a worcester heatslave 15/19 oil boiler, when I put the heating or hot water on the boiler pressur rises to about 2.5bar from the 1 bar its set at why?
Thanks
Mike, April 2008
home Fix label Heating label_important Home Heating Systems category Worcesterdone
when you HEAT water it EXPANDS, the system is sealed the now HOT water raises the pressure in the sealed system, pressurizing the system also raises the boiling point of the water inside.

wirecutterman, April 2008
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