Question about Heating & Cooling
If it needs a charge the leak has to be found and fixed. If the leak has been fixed and you have a service valve on the low side. It should have a vacuum pulled on the system to remove all air and non-condensable gases from the system. Then you can charge the system : 1. by weight according to the name plate. 2. charge by superheat (temperature leaving the evaporator + 16°F) When using the superheat method to charge the higher the Ambient temperature the lower the superheat difference will be.
Posted on May 01, 2008
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Posted on Jan 02, 2017
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