Hvac n - Study guides, Class notes & Summaries

HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: What is the absolute pressure at sea level if a gauge pressure is 35 psig? Answer: 49.7psia Q: 100,000 BTUH output furnace. Return air temp is 65F. Supply air is 135F. What is the CFM? Answer: 1323CFM Q: What is the best method of repair when a residential supply diffuser is noisy because of a loose vane? Answer: Replace the diffuser. Q: When...

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...

On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? - ANSWER6-7PSI or 6F What is the primary purpose of using flux when soldering copper or brass parts? - ANSWERPrevent Oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must? - ANSWERDrain off and away from the outdoor coil. Why must the runoff be drained off and away from the outdoor coil? - ANSWERExcessive ice can build up on t...

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

F80 Exam Questions and Answers Graded A After what date was the F-24 certificate of Fitness not recognized. July 31, 2014 How often must this certificate be renewed? Every 3 years In what types of buildings and occupancies are coordinators of fire safety and alarm systems in homeless shelter required? Homeless shelters, one-way voice communication systems, or occupied for more tha n fifteen persons for a period of more than 30 days. What is the certificate of occupancy? Determines the number ...

ASD Exam Questions With 100% Correct Answers 2023 Category 1 - Correct Answer-Category of Water that originates from sanitary water source (Clean) Catetroy 2 - Correct Answer-Category of Water that is contaminated; may cause discomfort or sickness (Grey) Category 3 - Correct Answer-Category of Water that is grossly contaminated; includes toxins, pathogens Special Situation - Correct Answer-Regulated or hazardous materials Class 1 - Correct Answer-Class of water that has least amount...

HVAC NATE Heat Pump Exam (Latest 2024 / 2025 Update) 100% Correct Questions and Verified Answers | Grade A Question: What is the capability of electronic programmable room thermostat to reset the set point early so that the space temperature reaches a set temperature at a specific time called? Answer: Computed recovery Question: What is an important reason for using electronic controls? Answer: They can make decisions based on many inputs. Question: When using a dou...

HVAC NATE Gas Heat Exam Prep (Latest 2024 / 2025 Update) 100% Correct Questions and Verified Answers | Grade A Question: Differential pressure gauge (also called a manometer) is used to... Answer: Measure duct static pressure Question: A line voltage fuse is used to protect from... Answer: Excessive voltage Question: Forced air residential/ light commercial gas furnaces provide heat by... Answer: Circulating air across the heat exchanger Question: No mechanical fasten...

HVAC NATE Heat Pump Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION In order to troubleshoot a load controlled by a control string, what should the technician check first? Answer: Proper voltage applied across the load. QUESTION The technician suspects that an outdoor thermostat used to bring on auxiliary heat may be out of calibration. The thermostat is a close-on-fall type that is adjustable. What is one method for ...

HVAC NATE Gas Heat Exam Prep (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: When starting up a dual system, the temperature rise method for determining airflow cannot be used with compressor cycle of the heat pump because: Answer: The capacity of the system varies too much with outdoor temperature. Q: The flame pattern a technician would expect to see on a properly operating single stage gas furnace equipped with "in shot" type burner is a:...