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Following up on my previous post....
IBC SFC-199 (with IBC's primary/secondary premade manifold)
Uponor EP radiant manifold
4 circuits, ~275' each
1/2" HePex in JoistTraks
JoistTraks 8" OC, attached to the underside (from inside the basement) of ply subfloor with hardwood flooring on top of it and mineral wool under it (between the floor joists)
With system calling for heat and Grundfos UPS15-58FC running on high, the flow rate gauges show a 0.4gpm rate. That is with the manifold valves completely open.
With boiler radiant water temp set for 125* F, the temp at the manifold input is 110* and at the manifold return is 100*
Is my flow rate high enough? Or, too high?
Other than a buffer tank (which is on my to do list), is there anything I should change/adjust/tweak?
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