For each additional 90° elbow required in a vent connector, the maximum capacity of the connector shall be reduced by what percentage?

Prepare for the Maine Gas Exam with our comprehensive quiz. Use flashcards and multiple choice questions, each featuring hints and explanations, to ace your test!

The correct answer indicates that for each additional 90° elbow that is required in a vent connector, the maximum capacity of that connector is reduced by 10%. This reduction accounts for the fact that each bend in the venting system introduces additional resistance to airflow, which can hinder the efficient exhaust of gases.

As elbows change the direction of airflow, they increase the overall pressure drop in the vent system. This pressure drop can affect the performance of the appliance connected to the vent, potentially leading to issues like improper venting or backdrafting. The 10% reduction is a guideline established to ensure safety and efficiency in gas appliance installations, helping to maintain proper operation and preventing hazardous conditions.

In practical terms, if an installation requires multiple elbows, understanding this reduction in capacity becomes critical in ensuring that the system is adequately sized for proper venting. Maintaining the correct capacity is necessary to avoid potential malfunctions or safety issues with the gas appliance.

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