HVAC Journeyman Practice Exam 2025 - Free HVAC Practice Questions and Study Guide

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What must be done to the vent connectors when upsizing is needed?

They should be completely replaced

They must not be upsized more than specified sizes

When vent connectors need to be upsized, it is essential to follow specific guidelines to ensure safe and efficient operation. The correct answer highlights that vent connectors must not be upsized beyond predetermined specifications. This is crucial because oversized vent connectors can disrupt the proper flow of combustion gases, potentially leading to incomplete combustion and increased risk of carbon monoxide buildup. Therefore, maintaining the correct size is vital to ensure that the system operates efficiently and safely, according to manufacturer specifications and building codes.

While there may be scenarios where vent connectors require replacement entirely due to damage or obsolescence, upsizing is strictly regulated to prevent performance issues and safety hazards. This means careful adherence to established guidelines regarding maximum allowable sizes is necessary to ensure system integrity and compliance.

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They can be upsized without limitations

They must be reduced in size

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