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R410A Pressure Chart: High and Low Side Readings Explained

The outside ambient temperature was 74 degrees and the chart stated that the pressure should be 280psig and it was reading 250psig. I set the temperature to 71 and thermometers were inserted into the supply and return...

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R410A Operating Pressures: Expert Q&A on JustAnswer

My low side gauge pressure was 100, and the high side was 270, with my temperature probe on the liquid line at 86 degrees. It was 75 degrees outside, but my delta T across the return and the closest register was only ...