National Fuel Gas Code Ch. 1-3 Latest Update 2025-2026 Actual Exam Questions with 100% Verified Correct Answers Guaranteed A+ Verified by Professor
Barometric Draft Regulator - CORRECT ANSWER: A balanced damper attached to a
chimney or flue gas manifold
BTU - CORRECT ANSWER: heat required to raise the temp of 1 pound of water 1
degree
Burner - CORRECT ANSWER: A device for the final conveyance of gas, or a mixture of gas and air, to the combustion zone
Category 1 Vented Appliance - CORRECT ANSWER: negative pressure, non-
condensing
Category 2 Vented Appliance - CORRECT ANSWER: negative pressure, condensing
Category 3 Vented Appliance - CORRECT ANSWER: positive pressure, non-
condensing
Category 4 Vented Appliance - CORRECT ANSWER: positive pressure, condensing
Common Vent - CORRECT ANSWER: A portion of the system that conveys products of
combustion from more than one appliance
Condensate - CORRECT ANSWER: The liquid that separates gas due to a reduction in temperature or increase in pressure
- / 1