HVAC NATE Heat Pump Exam Questions with 100% Correct Answers | Updated | Download to score A+

1. On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? ANS 6-7PSI or 6F 2. What is the primary purpose of using flux when soldering copper or brass parts? 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. 4. Why must the runoff be drained off and away from the outdoor coil? ANS Exces- sive ice can build up on the bottom of the coil and can reduce capacity. 5. What is the component that reduces sound transmission and prevents water leaks of a package heat pump installed on a roof? ANS Curb Gasket 6. Why do you need to add a control for a heat pump indoor coil that is installed on a fossil fuel furnace? ANS So the heat pump and furnace do not operate at the same time in normal heating.