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Why use Subcooling for TXV's & Superheat for Fixed Orifices? Refrigerant Charging!
In this HVAC Training Video, I Explain Why we need to Measure the Refrigerant Charge with Subcooling when a TXV Metering Device is used. I Explain why the Total Superheat Method is used when the System has a Fixed Orifice such as a Piston or Capillary Tubing. These Charging Methods refer to Air Conditioning Systems with a Single or Two Speed Compressor.
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