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re the boiler, I don't know is the honest answer!! its a 25 plus year old oil fired mammoth that just keeps going. Thinks it might be a camaray? Camry? (or this that a toyota?) As for the wiring, its also pre-historic and basically consists of a twin and earth connector that disappears into...

Agile, which part of Simons reply are you refereing to, the zone valve for the UFH? It's already there. If your talking about the moving of the orange wires, I investigated this option, Move the orange wires from the ch and HW valves to empty terminal 9. Wire the boiler connection to...

Thanks for your message. as I said the CH and HW is fine using the wiring as per the S plan diagram, so I think terminal 10 is the way to go. Interesting comment about my logic, I see what you are saying but the ch and dw are timer controlled, with a room stat in downstairs (in the hall...

We have the house extended and moved from a Y plan heating system to an S plan system with zones for HW, CH and a new zone for the UFH. The plumbing side of it is all fine, and the electrical connections for the HW and CH are fine, but I need to connect in the control box for the actuators on...