Follow the manufacturer's instructions for pressurizing the system. In general, if you're going to pressurize the system's low side, you'll want to use the low side test pressure. Want to learn more on how to “Leak Test an AC With Nitrogen Pressure”? Follow the link below: https://www.youtube.com/watch?v=JaSUDn2VU04&t=288s #HVAC #Refigeration | HVAC School
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