BRITONY COMBI 100 Expansion Vessel problem?

[prince]

Help, The pressure gauge on my Britony combi rises from 0.5 bar to 3 bar in under 30 minutes when the central heating is on, at this point the pressure relief valve kicks in. Is the expansion vessel faulty, or maybe need repressurising. Can I do this myself and if so How? Thanks for any help offered. Prince.

 

[kevplumb]

should have a shrader type valve on it (at the top)

drain the boiler and check the pressure should be around 1 bar

if not pump it up with a bike pump

refill

water press should be approx 1.2 cold

or even in the extreme try a search its been done today

 

[ChrisR]

What odds will you give me it's the flexy pipe to the pressure vessel that's blocked Kev?

 

[kevplumb]

could well be chris dosen't hurt to check the pressure first tho

 

[corgigazza]

ps dont forget to discharge air from ex vessel before removing blocked pipe or you will get wet even with system pressure drained.

 

[ChrisR]

could well be chris dosen't hurt to check the pressure first tho

I know - but what odds....

 

[kevplumb]

agreed chances are good its full of crud

sway i wont give odds

 

[prince]

Thanks for advice everyone. I will try suggestions today and report back.

 

[gazthepottertonengineer]

ps dont forget to discharge air from ex vessel before removing blocked pipe or you will get wet even with system pressure drained.

ive done that before as well makes a right mess (on a baxi Genesis of course but same boiler) we learn from our mistakes why did they make the flexi pipe so thin beats me

 

[ChrisR]

So that smart arses can suggest that it might be blocked and perplex Kev

 

[kevplumb]

 

[prince]

Thanks for help. The Expansion vessel had no pressure. However having corrected this the problem did not go away. The reason being A BLOCKED FLEXI PIPE TO EXPANSION VESSEL!!.