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Head Loss Calc for 1/2" PEX Line with Elevation gain
I'm completing a radiant heating system that was partially installed by the prior owner of my home. He ran 1/2" PEX to the top floor of the house and connected it to 4 Messana Ray-Magic ceiling panels. He did this because there was no way to expand the existing (forced air) system to this part of the house (it is very old, for starters). The panels have been pressure tested but otherwise never used. I have designed a single loop system but am uncertain about pump sizing. The Messana panels are low flow (0.22 GPM for optimal efficiency) but the system will be supplied from the garage which is fully 40 feet below the installed panels. How much should I adjust my head loss estimate?
Thank you! Dean.