NATE Heat Pumps

NATE HEAT PUMP RETAIL 2024 Questions with 100% Correct Answers R-22 vapor line diameters and lengths are typically specified for a: Vapor pressure drop that does not exceed 6 - 7 psi or 6°F. The primary purpose of using flux when soldering copper or brass parts is to: 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 to prevent excessive ice can build up on the bottom of the coil a...

HVAC NATE Heat Pump Exam Questions with 100% Correct Answers 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 outdoo...

NATE Heat Pump Exam 2024 Questions with 100% Correct Answers R-22 vapor line diameters and lengths are typically specified for a vapor pressure drop that does not exceed 6-7 psi or 6 degress F The primary purpose of using flux when soldering copper or brass parts is to 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 to prevent Excessive ice build up The component used to reduce sou...

NATE Heat Pump Exam 2024 Questions with 100% Correct Answers Charging a heat pump with refrigerant is best accomplished in the _______ mode. A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode B: Cooling mode Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode A: Heating mode Which of the foll...

NATE ICE Heat Pump Exam Questions with 100% Correct Answers A correct statement regarding the outdoor coil of a heat pump is that damage may result if the: defrost water does not drain from the coil. A dirty air filter in a heat pump operating in the heating mode could result in: excessive head pressure. A dirty air filter on a heat pump system will result in: high head pressure in the heat mode and low suction pressure in the cool mode. A fan delay can add cooling efficiency ...

NATE ICE Heat Pump Exam Questions with 100% Correct Answers What is the purpose of the reversing valve on a air to air heat pump? A. it reverses the direction of the compressor B. it changes the flow of refrigerant, making the outdoor coil the condenser during the winter months C. it changes the flow of refrigerant, making the indoor coil the condenser during the winter months D. it changes the flow of refrigerant, making the indoor coil the condenser during the summer months C. it chang...

NATE Heat Pump Exam 2024 Questions with 100% Correct Answers R-22 vapor line diameters and lengths are typically specified for a vapor pressure drop that does not exceed... 6-7 psi or 6°F The primary purpose of using flux when soldering copper or brass parts is to... 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 to... Prevent excessive ice can build up on the bottom of the coil and r...

NATE :Heat Pump Exam 2024 Questions with 100% Correct Answers What is the purpose of the reversing valve on an air-to-air heat pump: It changes the flow of the refrigerant, making the indoor coil the condenser during the winter months On a reversing-valve solenoid, what is connected to the top tube: the compressor discharge line On a reversing-valve solenoid, what is connected to the bottom center tube: the compressor suction line What pressure difference must be between the ...

NATE Exam Air Conditioning and Heat Pumps Exam Questions with 100% Correct Answers d (All of the above: air movement, humidity, temperature) Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above c (+15%) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be within ____% of this calculated value. a. ±10% b. +10% ...

NATE Exam Air Conditioning and Heat Pumps Pt 2 Exam Questions with 100% Correct Answers What must be verified before you use performance charts or tables to validate system operation? a. Refrigerant charge b. Correct air flow c. Check the voltage d. All the above b (Correct air flow) What may be needed to protect the compressor from refrigerant slugging? a. driers b. heaters c. more refrigerant d. accumulator d (accumulator) What is designed to boil off liquid refrigeran...