Having put up with a noisy heating system for most of the winter so far, I have finally concluded that the problem is a scaled up Heat exchanger on my Glow worm Ultimate 120FF. There is currently some X800 (Ferroquest) circulating. I have two questions - How long can I leave this in the system? - it has quietened down quite a bit after 1 hour but I would rather give it a little longer as I did this a couple of months ago (3 hours) and after refilling was about the same as before. The info on the bottle does not really say, just a limit for aluminium (there is no aluminium in my system).
Secondly, if this does not cure my problem, is there an economical way of getting it descaled using any other method i.e. replacing or removing and cleaning? The boiler was installed some time in 1997 and IMO should last a little longer. The scaling, I think has been caused by a long term leak (now fixed) that has been letting fresh water in over time into the F&E tank. We are talking around £1600 just for the boiler plus installation. If there was something I could do for say £500 maybe worth it.
Secondly, if this does not cure my problem, is there an economical way of getting it descaled using any other method i.e. replacing or removing and cleaning? The boiler was installed some time in 1997 and IMO should last a little longer. The scaling, I think has been caused by a long term leak (now fixed) that has been letting fresh water in over time into the F&E tank. We are talking around £1600 just for the boiler plus installation. If there was something I could do for say £500 maybe worth it.