Mike I pulled a little glycol/water mix out and checked it with my refractometer but the scale only goes to 15% so just a guess because it was off the scale 20-25%. As I had played with it I really couldn't notice any viscosity change. I left some out-side and opps, it became slush at -12 Deg C and became solution at -10 Deg C. Going to need some more Propylene Glycol. I'll just leave the circ. pump run.
My concentration is on the new compressor & of coarse the work thing. The delta T in and out of the HX is only a spread of 1-2 Deg C. I don't think flow is the problem. Just the installer didn't assure all the air was removed.
Still Burrr
Randen
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