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Exam (elaborations)
HVAC NATE Heat Pump examination
Preview 3 out of 20 pages
On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? - 6-7PSI or 6F What is the primary purpose of using flux when soldering copper or brass parts? - Prevent Oxidation The water that results from a defrost cycle of an air-to-air heat pump(runoff) must? - Drain off and away from the outdoor coil. Why must the runoff be drained off and away from the outdoor coil? - Excessive ice can build up on the bottom of the coil and can reduce capacity. What is the component that reduc
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