My 2008 Ducato minibus has the above heater fitted which I understand heats the engine cooling water and a radiator in the passenger area. I have converted the vehicle to a camper and would like to use this heater connected to a calorifier to give domestic HW. This heater has only an on/off dashboard switch and only works when the engine is running. Does anyone know how to change this arrangement please. I have also been told that running the heater without the engine running would heat the block, dry it out and cause premature engine wear - is this correct? If so I would also need to separate the heater from the van cooling system. Any info would be most helpful as it seems silly to buy another heater when I have a good working heater fitted. On a different topic I am aware that there was an old thread about grafting an x290 front on to the x250. I am aware that the basic advice was "forget it", but I just love the look of the new front (beauty is in the eye of the beholder) and wondered if it has been done. Thank you. Geoff.