Gas heating - Study guides, Class notes & Summaries

NATE Gas Heating Exam With 100% Correct Answers 2024 Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80%

NATE Gas Heating Exam Questions and Answers 100% Pass Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% -Answer-C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40% C: 60% D: 80% -Answer-C: 60% Today, furnaces with AFUE ratings greater than _____ are available. A: 85% B: 90% C: 100% D: 110% -Answer-B: 90% A thermocouple is ...

NATE GAS HEATING LATEST EXAM 2024 (A NEW UPDATED VERSION) ALL 50 REAL QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |GUARANTEED PASS A+

NATE Gas Heating (Air) Service Prep Exam Study Guide 2024...

NATE Gas Heating Exam/ 50 Questions & Answers/ . Terms like: Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% - Answer: C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40% C: 60% D: 80% - Answer: C: 60% Today, furnaces with AFUE ratings greater than _____ are available. A: 85% B: 90% C:...

How much clearance from the top of the boiler is needed for a HP boiler that produces 70000 lbs of steam? Correct Answer 7 feet On a gas fired boiler what is the proper gas to air mixture Correct Answer 30%-70% and in special arrangements it can be as high as 100% . ANSWER CHAPTER 11 remember% What is the total hardness in a system that was found to have calcium hardness of 60ppm and magnesium hardness of 18ppm and carbon hardness of 12 ppm? Correct Answer TH=(Ca x 2.5) + (Mg x 4.1)nTH=(...

b (heat exchanger) - Answer In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. a. gas valve b. heat exchanger c. inducer fan d. plenum box a (Gravity) - Answer What type of furnace moves warm air through the conditioned space without a fan? a. Gravity b. Horizontal c. Lowboy d. Upflow d (steel) - Answer Furnace heat exchangers generally are made of ______. a. ceramic b. copper c. plastic d. steel b (Annual Fuel...

When using a pulse load tester on a sealed lead acid battery, the minimum acceptable capacity is... Answer - 80% When a software change is made to a fire alarm system, what percentage of the initiating devices not affected by the change must be tested Answer - 10% When testing elevator recall, the elevator should go to the alternate level when: Answer - The lobby smoke detector on the recall level is activated Minimum requirement for system documentation Answer - Battery calculations/fl...

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Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40%