Have just suffered a double blow of the central heating boiler and gas cooker giving up the ghost on the same weekend Have the chance of a gas Rayburn (model will run several rad's and heat water) which has been well looked after and serviced. How complex is it to fit, and can my existing rad's ect be used for the Rayburn system? I should point out that my old boiler was a floor-mounted Potterton, inset into a chimney in kitchen diner, which is where I would place the Rayburn. Any hints,tips ideas would be much appreciated from anyone 'in the know'. Cheers