I live in a new house which has a Firebird combi oil-fired boiler. It is
almost 1 year old. I have recently noticed that the pressure gauge never
shows a reading above 0.3 bar and is sometimes nearer to zero! In every
other respect the boiler works OK. The red marker points to 1 bar so I
assume this was the pressure at installation.
Before I get the plumber back to look at it can someone knowledgeable give
me a view of the likely cause and solution. Also, is there any danger of
damage to the boiler if it is run when the pressure is very low?
They can be a bit difficult. Mine involves a flimsy plastic key and a
Part of the duty of your installer should have been to show you how to
top it up to correct pressure.
If you have a filling loop type it is a bit easier. Did the installer
leave the loop?
To get right to the point--you probably have a very minor leak at one
of the rad's. Use a little toilet tissue (bog roll) and dab around the
rad pipes. If you find it, it is (normaly) easy to fix. Getting a
plumber to quickly could be an expensive overkill. Good luck
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