Gas Fitter Practice Test

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Study for the Gas Fitter Test. Enhance your knowledge with flashcards and multiple-choice questions, each accompanied by hints and explanations. Ace your exam!

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What is the minimum termination distance for a Category 4 furnace vent from a combustion air inlet of any other appliance?

12"
36"
60"
120"

The correct answer is: 12"

The minimum termination distance for a Category 4 furnace vent from a combustion air inlet of any other appliance is established to ensure safety and efficiency in the venting system. This distance helps to prevent flue gases from re-entering the combustion air inlet, which could compromise the operation of the appliance and lead to safety hazards. A distance of 12 inches is specified to maintain an adequate separation to allow for proper ventilation without the risk of gas recirculation. This is crucial in preventing the potential buildup of hazardous gases or harmful fumes that may occur if the vent and combustion air inlet were too close together. Other options indicate greater distances that may exceed what is necessary for safety, thus adding unnecessary complexity and potentially increasing the installation costs without providing additional safety benefits. Understanding these minimum requirements helps ensure compliance with relevant building codes and safety standards.