NATE HEAT PUMP RETAIL READY 2024 Questions with 100% Correct Answers | Updated | Download to score A+

1. R-22 vapor line diameters and lengths are typically specified for a ANS Vapor pressure drop that does not exceed 6 - 7 psi or 6°F. 2. The primary purpose of using flux when soldering copper or brass parts is to ANS Prevent oxidation. 3. The water that results from a defrost cycle of an air to air heat pump (runoff) must ANS Drain off and away from the outdoor coil to prevent excessive ice can build up on the bottom of the coil and reduce capacity. 4. The component used to reduce sound transmission and prevent water leaks of a packaged heat pump installed on a roof is ANS The curb gasket. 5. On some installations, a heat pump indoor coil can be installed on an existing, operable, fossil fuel furnace. When this type of installation is done you need to add a control so that ANS The furnace and heat pump do not operate at the same time in normal heating. 6. When under a deep vacuum, a hermetic refrigeration compressor's motor windings could be ANS Damaged if energized. In order for an evacuation to be considered complete ANS A heat pump refriger- ant circuit should be evacuated to a vacuum pressure of 500 microns or below