Originally Posted by Hightower
It's an open system with a tank in the loft. I'll wait till the warmer months, when I'm not in need of the central heating before carrying out the flush.
But has anyone heard of combustible gasses building up in a heating system before? This was a new one to me
Its from the rust forming inside the radiators.
Off topic I know but a couple of lads died when they entered an anchor chain locker which was sealed and the gas given off from the chain rusting killed them. Its on the MAIB site somewhere.