I have done a air biut of searching but cannot find the anser to this. Maybe someone here can throw some light on it. In my new house the Vokera Maxin boiler has six pipes connected two it. They appear to be:
gas CH flow 1 CH flow 2 CH return HW mains inlet HW flow
At present, all the radiators except one uses 15mm tube and are connected to flow 1. However, one old-looking radiator is on 22mm (well, actually 3/4 in) tube and uses flow 2.
Can anyone explain why there seem to be two CH circuits? I want to disconnect the 'one' radiator (because it is in the wrong place) but maybe it has to be there for some arcane reason.
Any thoughts?
Robert