I am replacing a main heat exchanger in a green star 42cdi boiler, all straight forward apart from removal of the bottom pipe from the heat exchanger, has anyone got any tip in how to remove it
No never and done three figures. Are you qualified to do it?, crucial flue and gas seals here and needs a flue gas analyser to set the new heat exchanger up as it will be set up to the old one with less flue gas flow through.