So after adjusting the txv, we were able dropped the SH, SC and discharge line temp, also raising the evaporator pressure. This unit struggled to keep up before hand. We drew this out to get a nice visual of what was happening in the system. Sometimes you just have to take your time. FYI, walk in freezer maintaining -32⁰C using 404a.

Posted by HVAC Know It All at 2022-04-04 20:40:26 UTC