What is the maximum temperature rating for a fire damper installed in the supply-air plenum?

The maximum temperature rating for a fire damper installed in the supply-air plenum is indeed set at 286 degrees Fahrenheit. This specification is particularly important because fire dampers play a critical role in preventing the spread of fire and smoke within a building's ventilation system.

The temperature rating indicates the maximum ambient temperature that the damper can withstand while still functioning effectively to impede the passage of smoke and fire. When the temperature exceeds this limit, the materials used in the fire damper might not perform as intended, compromising fire safety. This standard is essential to ensure that ducts and air handling systems maintain their integrity and do not become a conduit for fire spread during an emergency.

Therefore, the 286 degrees Fahrenheit rating adheres to the requirements set forth by NFPA 96, promoting safety and compliance in commercial cooking operations. Understanding this standard is crucial for ensuring that systems are properly designed and maintained to protect property and lives.