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Slightly high pressure in C24 Heatline Boiler

The pressure in our boiler is slightly high (should be 1-1.5 and it is around 2-2.5) - it is only 2 years old and we have had someone in to look at it recently as the thermostat was not behaving correctly - so I am confident there is not anything wrong with it - but now that we are starting to use the heat again, the pressure rises up into the 'red' area (3-4) when the heat is turned on. Is this something to be worried about? And is there anything that we can do to release the pressure?
Thanks for any assistance!

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  • riversidebab Feb 22, 2009

    hi i have a heatline boiler c24 and the temp keeps going on to the red numbe 4... we keep bleeding it and setting it back to one and a quater...butit goes backup HELP...please

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My heat line capriz 25 boiler is flashing that i have flam or gas falure and has stoped workin? what do i do?

Posted on Feb 11, 2009

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You should have a filling loop built in to the boiler or external make shaw this is not letting water in to the system, also being a sealed system hot water will expand. so on your boiler you will have a expansion vessel which has to be filled with air so that the water can expand in to it. undo the valve which will be like a tyre valve off a car and quickly press the pin if u get air spay out with quite alot of pressure u should be ok. if empty you need to top it up to the manufactures instructions normaly about 1 bar. if both the above are ok the expansion vessle is broken

Posted on Sep 12, 2009

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Crack open any joint in the system like a joint to a radiator and let a little water drip out. you should not use when in the red

Posted on Oct 05, 2008

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Posted on Jan 02, 2017

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