I have an Bosky stove/central heating boiler, originating from Europe and an electric (mains pressure) hot water service. The suggested method of heating the water in the tank is with the copper coil heat exchanger inside the tank (Most tanks in UK are this way). The plumbing stores know nothing of this method. Do I change the hotwater tank or what. I am not on mains water we have a water tank with an Onga pump detecting pressure change, can I put that pressure on the boiler in the Bosky. Is ther an expert in the Woodend/Romsey area?