Hi all, new to this so hopefully u can help me out,my uncles warmflow 50/70 oil boiler burst on fri(water flyin out the back ,big hole) so I got him a 2nd hand one , it's also a warmflow, only it's a B1, 2010. piped it up and turned it on, within 20 mins the water was that hot that it melted a 22mm liner connected to 22mm pipe and blew off!!! I've never seen or heard of this! I was thinkin maybe the nozzle mite need changed to suit the boiler, if anybody knows anything that could help it would b greatly appreciated !