Should water recirculate thru the header tank ?
I ask as I was up in the loft last night and every time I could hear the boiler fire up for the heating, what looked like a overflow pipe starting trickeling hot water into the header tank.
Is this as it should be or is it yet another problem made for us by the Yeehaa plumbing company ? (remember the plumber who got caught pissing in the flower vase, he installed our boiler)