Hvacgas heathvacheat pump - Study guides, Class notes & Summaries
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HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A
- Exam (elaborations) • 35 pages • 2024
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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...
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HVAC Gas Heat Certification Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A
- Exam (elaborations) • 20 pages • 2024
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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...
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HVAC NATE Gas Heat Exam Prep (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A
- Exam (elaborations) • 33 pages • 2024
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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:...
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HVAC Gas Heat Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A
- Exam (elaborations) • 25 pages • 2024
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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...
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