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    Honeywell ST7100 to Drayton Lifestyle wiring

    As per title really...this is my existing system (rightly or wrongly this is how it is!)...there's no 3 way valve, just a basic gravity DHW and pumped rads...yes, it's quite old ! I cant quite get to grips with what wire goes where on the new Drayton Lifestyle LP522Si dual channel programmer...
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