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Mod-Con system design question.. Fewer zones = better?
1200 sq. ft. 1890 gut-job renovation in Northern NY. New insulation. 2 beds up, one down. 2 full baths. IBC DC 20-125 combie. Heavy hot water load already addressed here.
I have read and learned a lot on the forum. I have radiant and a couple cast iron radiators including one of those massive cast iron baseboard units on the first floor. Baseboard on the second floor.
Based on what I’ve read, it seems like my best chance at achieving condensing temperatures, avoiding short-cycling and just keeping things simple, two zones might be the way to go. I’m thinking of plumbing my iron rads in the secondary loop first, baseboard second, radiant last. To keep mass as large as possible and to avoid “micro-zoning”, I’m thinking of putting all the first floor on one zone and all the second floor on another. The house is small and open plan.
Do I have the right idea? I will include everything to give me balance and adjustment options. Thanks, C.