Nate gas heat exam - Study guides, Class notes & Summaries

NATE Gas Heating Exam Verified Questions and answers 2023 Latest Update 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% - correct answer C: 78% Many pre-1992 furnaces have efficiencies around . A: 10% B: 40% C: 60% D: 80% - correct answer C: 60% Today, furnaces with AFUE ratings greater than are available. A: 85% B: 90% C: 100% D: 110% - correct ...

NATE A/C Exam #2, Top Questions & Answers. 100% Accurate. Rated A+ The Fahrenheit scale is based on boiling water at sea level at what temperature? A: 459 degrees B: 212 degrees C: 180 degrees D: 100 degrees - -B: 212 degrees Zero pounds gauge corresponds on the absolute scale to: A: 144 B: 212 C: 14.7 D: zero - -C: 14.7 Hidden heat in refrigeration work is referred to as: A: Intensity of heat B: Latent heat C: Heat a thermometer ...

NATE ICE Residential Gas Heat. Top Exam Questions & Answers. 100% Accurate. Verified The discharge of the bypass humidifier is installed: - -in the return air duct The first stage of a two-stage gas furnace permits: - -reduced CFM and shorter burner on times. The purpose of the International or National Fuel Gas Code is to: - -provide the minimum safety requirements for the installation of fuel gas appliances To determine the heat anticipator setting on an electromechanical thermos...

NATE Gas Heating Exam Questions and Answers Already Passed 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% C: 60% D: 80% C: 60% Today, furnaces with AFUE ratings greater than _____ are available. A: 85% B: 90% C: 100% D: 110% B: 90% A thermocouple is used with: A: Interm...

NATE A/C Exam 2 Questions and Answers Graded A+ The Fahrenheit scale is based on boiling water at sea level at what temperature? A: 459 degrees B: 212 degrees C: 180 degrees D: 100 degrees B: 212 degrees Zero pounds gauge corresponds on the absolute scale to: A: 144 B: 212 C: 14.7 D: zero C: 14.7 Hidden heat in refrigeration work is referred to as: A: Intensity of heat B: Latent heat C: Heat a thermometer can "sense" D: Cold B: Latent heat Absolute zero on the Fahrenheit scale ...

NATE Industry Competency Exam: Commercial Refrigeration Questions With Complete Solutions With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in current. d. Decrease in compressor capacity and increase in current. - Answer D An indication of non-condensa...

NATE A/C Exam 1 Low airflow over a residential split system air conditioning evaporator can cause A: Liquid flood-back to the compressor B: A decrease in compression ratio C: An increase in suction line superheat D: Oil logging in the evaporator - Answer-A: Liquid flood-back to the compressor Which of the following is the correct sequence of work? A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the system. B: Recover refrigerant, evacuat...

NATE Industry Competency Exam: Commercial Refrigeration Already Passed with 100% With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in current. d. Decrease in compressor capacity and increase in current. D An indication of non-condensable gas in a refrigeratio...

What precautions are required when mounting any gas furnace on a wood platform in an attic? - Answer None The gas control valve may be damaged if exposed to an inlet pressure above: - Answer 14 in. W.C. How many elbows and joints should a vent connector have: - Answer As few as possible to reduce resistance of flue gases What conditions, if any may a technician route the exhaust of the furnace into the exhaust vent of the water heater? - Answer Under no conditions may you use the water he...