Small Radiant System Question
I am rehabbing a small area, about 400 square feet, and its adjacent to my furnace room. I was considering getting an AO Smith ProMax SL which has two extra ports, and doing an open system. A closed system with an exchanger would drive up the cost to 3k minimum for tank, exchanger, pump, etc.
Anyone have ideas on open systems? Radiantec has a large site describing the various layouts. Legionella questions seem to pop up a lot. I can’t see how a loop of small dimension would turn into a bacteria farm. Any thoughts?