boiler overflow


Postby beckyawest@gmail.com » Mon Mar 16, 2009 2:33 pm

I have a Potterton Puma 80e combi boiler approx 8 years old which seems to be working fine other than the external overflow (if that's what its called) has gone from dripping all the time to a larger quantity of water coming out - not buckets but enough for there to be a wet patch underneath the pipe all the time. Can't find any mention of its purpose let alone a reason in the manual.
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Postby rosebery » Mon Mar 16, 2009 10:39 pm

Whats the pressure reading on the dial on the boiler?

If its more than 2 bar you need to let some water out as the pressure relief valve is operating. Is the filling loop connected? Is the valve open just a little bit thus overpressurising the system?

Alternatively the PRV might have failed.

Cheers
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Postby beckyawest@gmail.com » Tue Mar 17, 2009 2:20 pm

Hi - thanks for the reply. There are 2 hands - a red one that is at 1 and a black one between 2 and 3 - which should I be looking at ?
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Postby Steve the gas » Wed Mar 18, 2009 6:28 am

The black one, the red one will move by hand if you try to move it,

Hth
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