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hi i have a karizma plus system in and old school i want to upgrade to a modern setup i have two keypads 7 door sensors 15 room sensors all wired in i want to try and keep the wiring the building is about 5,000sqft thanks

Looking for help in wiring a drayton dc1100 i have an old school which as a commercial heating systems regency slim line boiler part was damaged when some of the copper was stolen i have a new controller like for like. on the pipework is 2 flow sensors. high and low presser switches they is a...