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Central Heating & Storage Heaters Forum
Loss of pressure in C/H system
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<blockquote data-quote="ProDave" data-source="post: 470051" data-attributes="member: 6969"><p>"new system" will only fix it if every pipe, every radiator and hot water tank is also replaced.</p><p></p><p>It won't be an air leak, it will be water leaking somewhere. if it only leaks when it is hot it might just be evaporating so not visible as a drip.</p><p></p><p>Are you sure the expansion vessel WAS replaced and the pre charge air pressure set correctly? Check the drain from the over pressure relief valve for drips when the boiler is running.</p></blockquote><p></p>
[QUOTE="ProDave, post: 470051, member: 6969"] "new system" will only fix it if every pipe, every radiator and hot water tank is also replaced. It won't be an air leak, it will be water leaking somewhere. if it only leaks when it is hot it might just be evaporating so not visible as a drip. Are you sure the expansion vessel WAS replaced and the pre charge air pressure set correctly? Check the drain from the over pressure relief valve for drips when the boiler is running. [/QUOTE]
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Loss of pressure in C/H system
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