You start with the factory charge and line length estimate adjustment.
Originally Posted by HVACTechNC
Then, you MEASURE. You adjust the charge based on that data, using the correct method, based on the metering device being used.
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2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
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It's not rocket-science...
It's electromechanical thermodynamic engineering
I agree with the charging by WB temp. Which can be measured by a physcrometer .If you get a field piece hs35 or 36 ,it has a cool little head attachment that fits right in the case ,get that and a superheat chart and you will get +/- 3 degrees everytime gauranteed or yo money back
Gas and go does not apply to refrigeration