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Hello all Ive installed a polyplumb UFH system in my house with a manifold upstairs and downstairs.. ive wired it using 5 core from immersion closet to each manifold and also to the boiler.. The HW and UFH work fine but im unable to shut off the CH from the Hortsmann programmer im using...

Hoping someone out there could clarify a few things for me.. Ive upgraded my boiler recently to an Ideal logic plus sytem boiler.. its works in conjunction with a 2 zone valve diagram which i believe is an S plan.. Ive bought a honeywell wiring centre and have had no issues until connecting the...