"great boiler, based on the long standing Biasi M110 now no longer available. Uses a similar heat exchanger. Supplied with a jig for the boiler isolation valves, dont use it. makes fitting the preformed pipes a lot of agro and is for esthetic purposes only. good control panel, electronic water pressure read out. bigger KW versions available, almost as quiet as a vaillant combi. 2 more going in by xmas 2012."