application of cental heating leak sealant?
 

Hi all,



I have few questions about application of CH leak sealant



My central heating /with combi boiler/ is loosing pressure.
I had the boiler checked and there are no visible leaks from radiators,
valves
and the visible sections of the pipework.

I added about 1 litre of sealant to the system /50-70 litres/ which
helped a bit, it is loosing pressure slower than before.



What is the correct way of using sealant?

- Add it, let it circulate and switch the system off, or just use it
normally?

- Can you just keep on adding sealant till the leak stops, or is it likely
to clog up
the system and damage the boiler?

- If you decide to replace section of pipework or all of it,
should you flush the system with something?



TIA



Rafal