Hi there - I have a Worcester Greenstar 25Si combi boiler running our heating rads. I've recently added a small tank with a heating element powerd by solar into the rads circuit. It's producing good heat, but I need a circulation pump to be on to move the heat around the system. Ideally I'd like to use the existing pump in the boiler to do this, rather than adding another one. Does anyone know if there is a way to set the boiler to run it's circulation pump without firing the boiler for heat?
