Fire dampers in a duct line must always be installed in a sleeve. True or False?

Fire dampers are crucial components in HVAC systems that help prevent the spread of fire and smoke through ductwork. They are designed to automatically close in the event of a fire, thus sealing off sections of the duct system to contain flames and smoke within a designated area.

The necessity of installing fire dampers within a sleeve is primarily due to safety and performance considerations. A sleeve provides structural support and protects the damper, ensuring it functions correctly under adverse conditions. The sleeve helps to maintain the integrity of the duct system by providing a secure fitting that can withstand temperature changes and potential pressure fluctuations. Furthermore, installation in a sleeve facilitates easier maintenance and replacement of the damper if needed.

This requirement is often specified in building codes and standards, which emphasize the safety of occupants and property. Therefore, the assertion that fire dampers must always be installed in a sleeve aligns with industry best practices and regulatory requirements, establishing the statement as true.