Search results

Thank-you for the quick response. Can I just check that by depressurise you mean drain down. Also the exp vessel is a sealed unit and I haven't noticed a valve on it - that said I haven't removed all of the boiler casing so it may be that it's just hidden from view.

Each week I need to top the pressure up, as it drops from 1.5 to 0.5 over a week, HW & CH working fine. Boiler has not been serviced for at least 5 years. There is discharge from the pressure release valve outside - crud and steam. From reading other discussions this points, I believe, to a...