I currently have a gravity fed radiant heating system in my house. I want to upgrade to a pumped system, but want to keep the old fashioned radiators. Is there any way of figuring out the loop? I need to know this so I can get the right stuff for the job. Figuring out the right size expansion tank is also a concern. The boiler I have chosen is the prestige PS110 condensing gas boiler. It has a grundfos UP15-58 pump in it. my house is approximately 800 sq ft per floor with 3 floors. the main floor and the upper floor will be heated with about half the basement to come later. I was looking at making my system in 3 zone system, 1 for each floor. I want to zone the system with Taco Zone Valve - EBV Series - 3/4 inch 24 Volt TACE075C2-3...0.75"...and control them with a Taco Zone Valve Controller - 3 Zones - 24 Volts - Taco ZVC-403...controler. this would give me a thermostat on each floor. Is the pump in the boiler enough, or would I need a pump for each zone which would mean a pump controller instead of a zone controller....please, any input would be greatly appreciated
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