What type of connection is required between the ductwork and sleeve of a combination fire/smoke damper?

What type of connection is required between the ductwork and sleeve of a combination fire/smoke damper?

• A. Fixed connection
• B. Breakaway connection
• C. Sealed connection
• D. Flexible connection

Answer: (B)

A breakaway connection between the ductwork and the sleeve of a combination fire/smoke damper is essential to ensure proper function and safety. This type of connection allows the damper to operate effectively during a fire or smoke event by providing the necessary movement to prevent damage to the damper and duct system. In the event of a fire, the damper needs to close to contain smoke and heat, but it also must be able to physically separate from the ductwork without causing structural failure in the system. The breakaway connection facilitates this essential function, allowing the damper to react to the thermal conditions without being constrained by rigid connections that could impede its operation. Using a fixed connection or a sealed connection might hinder the necessary expansion and contraction of materials during a fire event. Similarly, a flexible connection may not provide the stable support needed for the damper to operate effectively as intended. Thus, the breakaway connection stands out as the best choice to meet the NFPA standards for the safe performance of combination fire/smoke dampers in HVAC systems.

A breakaway connection between the ductwork and the sleeve of a combination fire/smoke damper is essential to ensure proper function and safety. This type of connection allows the damper to operate effectively during a fire or smoke event by providing the necessary movement to prevent damage to the damper and duct system.

In the event of a fire, the damper needs to close to contain smoke and heat, but it also must be able to physically separate from the ductwork without causing structural failure in the system. The breakaway connection facilitates this essential function, allowing the damper to react to the thermal conditions without being constrained by rigid connections that could impede its operation.

Using a fixed connection or a sealed connection might hinder the necessary expansion and contraction of materials during a fire event. Similarly, a flexible connection may not provide the stable support needed for the damper to operate effectively as intended. Thus, the breakaway connection stands out as the best choice to meet the NFPA standards for the safe performance of combination fire/smoke dampers in HVAC systems.