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    Changing Potterton PRT100ST to Honeywell DT90e

    Hi All I'm new to the forum so hi! I'm looking to change my Potterton PRT100ST room thermostat to a new digistat and I'm probably going to go for a Honeywell DT90e. I’m trying to work out (before buying it) – how it’ll be wired up, as I'm a firm believer of planning things before doing...
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