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thomas HVAC/R Evacuation Quiz February 15, 2022, 12:29 am
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Drains and Double traps
Double traps are no good. That's the end of this tech tip. Okay, here's some detail: Anytime your drain goes up and down more than once, you have a double trap UNLESS you place an air vent between the two traps that vents ABOVE the drain inlet. The double trap causes drainage issues because air […]Read more
Nomenclature and How to Use It
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