I've bought a flat with old storage heaters and an immersion heater. I want to install a gas boiler and central heating. There is a closed off gas mains pipe in the room where the water tank is. Here's my question: Does the new boiler have to be placed on an exterior wall, or could it be placed where the water tank and gas mains currently is, with a flue passing through one interior wall out to the exterior wall? Thanks.
