STAN, YOU STILL OUT THERE?

[JSM]

Hi Stan,

Brilliant; opened both taps on Baxi and successfully repressurised to 1.5 bar. I'll monitor the situation but desperately hoping there is not a leak - new house, carpets all down, pipes underneath, no easy access, etc. Can the system just lose some water without there being a leak? If there is a leak, is there a rule of thumb to guide me how bad it is, e.g. 1 Bar loss = 1 Litre?

Hope to hear from you.

 

[stn]

Hi, glad I could help you on this :+))
For sure there are rules to calculate what a 1-liter leakage would cause, but you would need to know to volume of the system, the volume of the expansion tank, temperature, and so on.
But now you know how to repressurize the system, take one bucket and drain the system until you reach, let say 1 b. This will be about half a pint or so, then you will see what it represents.
If you have a very small leak inside the boiler, it may be invisible (except for some white dust) as it will evaporate quickly.
Check for the drain on the safety valve. It has to be visible, one drop at a time, and at the end, pressure drops....
Hope this will have helped you.
Stan
don't forget to close both filling knobs.