Alpha C27 boiler pressure keeps dropping over night

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Hi,
My alpha c27 boiler pressure keeps dropping most nights over night while its been really cold, any ideas? The only thing is that sometimes there is a little collection of water underneath the boiler (not much water and not all the time)

Cheers
Matt[/url]
 
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Expansion vessel.
After you have topped the boiler up to 1 bar and put the heating on. Does the pressure get up to 3 bar? If so expansion vessel.
 
Expansion vessel.
After you have topped the boiler up to 1 bar and put the heating on. Does the pressure get up to 3 bar? If so expansion vessel.

Yes the pressure does rise up and near/into the red, is it an easy job to fix or will I need to get a plumber in? And if so roughly how much do you reckon it will cost? Thanks
 
Sponsored Links
Expansion vessel.
After you have topped the boiler up to 1 bar and put the heating on. Does the pressure get up to 3 bar? If so expansion vessel.

Yes the pressure does rise up and near/into the red, is it an easy job to fix or will I need to get a plumber in? And if so roughly how much do you reckon it will cost? Thanks

Use a car foot pump on the expansion vessl when the boiler is low on pressure in the morning. Pump it up to about 1 bar should be ok.
 

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