ok back to question in point the rads are pipe upstairs one circuit and down another one, so is there a valve I can put on the pipes that can control either up or down and do they wire into boiler somehow
2 x 2 port valves, room stats, timer and boiler all wired to junction box power'd by a double pole isolation point (sometimes through boiler first) pump either in boiler or external.
heating engineer or sparks needed, must be wired/tested/signed off by competent person.
are you sure the system is seperated? its not gravity upstairs?
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