Recent content by LesP

Sorry, now you are getting technical! Please can you explain more fully what you mean. Valve where and how?

Have a Ferolli Modena Combi Boiler - a year old. Water supply is direct from the mains. When heating first comes on all is quiet. After about half and hour there is a rushing sound that can be heard all over the house (sounds like a really bad draft coming under the door). Noise stops when...