Hvacnate gas heat Study guides, Class notes & Summaries

HVAC Gas Heat Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION Do LP gas installati gas valves with built-in regulators? ons use Answer: No- we just said that the gas regulators are located at the supply tank. Duh. QUESTION What does a gas valve do? Answer: It stops, starts or modulates the flow of fuel gas. QUESTION What are the three classifications of gas valves? Answer: Solenoid Diaphragm Heat Mot...

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:...

HVAC Gas Heat Certification Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: What is the volume of flue gas produced from a 60,000 BTU/h Category I fan assisted Natural Gas furnace operating with 50% excess air? Answer: 600 cu ft. Q: The purpose of a flue baffle is to Answer: Increase heat exchange Q: The LP gas pressure supplied to the appliance gas valve should be Answer: 11 - 13 in. W.C. Q: An installed gas furna...

HVAC Gas Heat Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: Why is specific gravity of a gas important? Answer: It affects the gas flow through the piping and through the orifice of the furnace. Q: What is an orifice and a spud? Answer: An orifice is a precisely sized hole in a gas fitting which gas flows from the manifold to the burners. A spud is another name for a gas fitting. Q: If both a light gas and a heavy gas are at...

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 Gas Heat Certification Exam Prep (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION Describe the difference between a single-rod (local sensing ) and dual-rod (remote sensing system as the pertain to flame rectification. Answer: Flame rectification system can be classified as eatiher single rod. (local sensing) or dual rod (remote sensing) single rod, consist of an igniter and sensor all in one-rod, Dual-rod system use a separate ig...

HVAC Gas Heat Certification Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION Duct wrap is used to insulate round metal ducts. What is the approximate R-value for "one inch" of this insulation Answer: R= 3.0 QUESTION A category 1 natural gas furnace has a typical air temperature rise of Answer: 60°F - 120°F QUESTION A technician connects the electrical circuit to an 80,000 BTU gas furnace with a 3- ton ...

HVAC NATE Gas Heat Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION A damaged section of double wall vent pipe is to be replaced with a section produced by a different manufacturer: Answer: The installer should check the new section for compatible locking joints. QUESTION If too much primary air is used the flame will: Answer: Lift off the burner. QUESTION What is the problem when a flame on a high efficien...

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...