Hvac questions Study guides, Class notes & Summaries

On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? CORRECT ANSWER 6-7PSI or 6F What is the primary purpose of using flux when soldering copper or brass parts? CORRECT ANSWER Prevent Oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must? CORRECT ANSWER Drain off and away from the outdoor coil. Why must the runoff be drained off and away from the outdoor coil? CORRECT ANSWER Exc...

What does NEC stand for? - National Electric Code What is Ampacity? - The current carrying capacity of wire or cable expressed in amperes or amps. What is EMF? - Electromotive Force (volts) What is Amperage? - The measurement of electrical flow in a conductor. You check volts in parallel or series? - parallel You check amps in parallel or series? - series What is Voltage? - The difference in potential force between two points. Most often called Electromotiv...

IFSTA Chapter 16 & 17 Exam | Questions and Verified Answers| 100% Correct Q: How can HVAC systems affect tactical ventilation? Select one: a. Cool the air in the fire room to weaken the fire's intensity b. Help extinguish the fire by changing the pressure in the structure c. Provide fresh air to ventilation crews d. Move products of combustion to unaffected areas Answer: Move products of combustion to unaffected areas Q: Why are buildings under construction more susceptible...

HVAC NATE Heat Pump Exam 2024 Questions and Answers (2024/2025) (Verified Answers)q1

Intro to hvac questions and answers already passed Which of these heating methods is most commonly used as a heat source in cold climates? Natural gas furnaces Which of the following is a device used to maintain indoor air quality? Ultraviolet light The purpose of an evaporator in a refrigeration cycle is to transfer heat from the air to the refrigerant Heat can be transferred from a refrigerant to the outdoors on a hot day because the refrigerant is warmer than the out door ai...

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HVAC 2023 EPA 608 CORE Type 1,2,3 Exam Questions and Answers

Michigan Mechanic Certification- HVAC Questions and Answers 100% Solved Cooling system leak diagnosis Correct answer Pressure test or dye test Purpose of a radiator Correct answer The purpose of the radiator is to dissipate heat that is picked up by coolant in the engine into the air passing through its fins and tubes Symptoms of low coolant Correct answer Engine overheating and no heat from the HVAC system Purpose of the thermostat Correct answer The purpose of the thermostat is to tr...