RE: best place to vacuum ?

what your guys opinion on evacuating a system after a nitrogen pressure test. I have always vacuumed the system from the highest point. But I am wondering if that is absolutely necessary ?

Jcondon155 Rookie Asked on March 22, 2018 in Commercial HVAC.

Thanks Guys, I was taught that nitrogen rises to the highest elevation in the system and that if you don’t vacuum from there you will never get all of the nitrogen out of the system

on April 2, 2018.
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2 Answers

Depends on how you want to evacuate, some equipment will have 3/8” flares just for evacuation

Super Tech Answered on April 1, 2018.
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