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Controls for solar hydronic, overheat and freeze protection
I'm having a solar system made by Globe Solar installed(roof mounted integrated tank and evacuated tube) and have a question about controls. The solar feeds a gas fired tank used for DHW and a hydronic slab, all open direct with no heat exchangers. Can I use my existing circulator and some combo of controller/valves to circulate the solar lineset for freeze protection and to dump heat to the gas fired tank and slab in the summer?
Thanks for any ideas,