1. Just upgrading some bits and bobs. Hang in there
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Heating: Worcester Bosch Combi Greenstar with zone valves Wiring Diagram 2016-08-20

Helpful Worcester Bosch Combi Greenstar Boiler with zone valves Wiring Diagram

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    Worcester Bosch Combi Greenstar Boiler with zone valves Wiring Diagram.

    This has zoned radiator valves and underfloor heating control
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