G2 Gas Fitter Practice Exam

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Prepare for the G2 Gas Fitter Test. Study using flashcards and multiple choice questions, with hints and detailed explanations for each question. Ensure your success!

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Insufficient natural draft can usually be corrected by:

Reducing appliance load
Decreasing chimney height
Installing a draft regulator
Increasing the height of the chimney

The correct answer is: Increasing the height of the chimney

Increasing the height of the chimney is an effective way to improve natural draft. The principle behind this is based on the stack effect, where warmer air rises in the chimney and creates a difference in pressure that helps draw combustion gases out of the appliance. A taller chimney enhances this effect by providing a greater vertical column for the hot gases, which increases the draft. Additionally, a higher chimney can improve the draft performance by helping to avoid wind effects or downdrafts that can occur with shorter structures. Proper height is essential for the efficient operation of gas appliances, ensuring that any emissions are effectively vented outside and that there is adequate air supply for safe combustion.