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Sanity Check Calculating Convector Cubic Ft/Air per SF EDR for + Valve and Balancing Needs
I'm working on balancing my steam heating system, a subject I've started in another thread. (which should be vented ok now, update on that to follow after the weekend) I downloaded and read the "Balancing Steam Systems" pamphlet by Gill & Pajek, which I've found most helpful. I'm trying to calculate what my radiators might need for valves, and I was wondering if someone help with the following few questions:
1: Does anyone know the "Cubic Feet of air per square foot EDR" figure on a convection or fin (not sure which is the right term?) radiator like mine? (pictured) This type isn't in the calculation table the pamphlet above provides, and it seems I need it to calculate the correct valves. An attachment question to this would be if it varies at all by length of the radiator
2: PSI- I'm assuming 3PSI boiler pressure is ok, or best? The pamphlet above covers 1-3oz of pressure. Pros and Cons? I'm running a ~12 year old weil-mclain if that matters
Thanks in advance!