// CODE SNIPPET
716.3.1 Fire Protection Rating
JUMP TO FULL CODE CHAPTER
Fire dampers shall have the minimum fire protection rating specified in Table 716.3.1 for the type of penetration.
|MINIMUM DAMPER RATING
|Less than 3-hour fire-
|3-hour or greater fire-
The fire damper actuating device shall meet one of the following requirements:
1. The operating temperature shall be approximately 50°F (10°C) above the normal temperature within the duct system, but not less than 160°F (71°C).
2. The operating temperature shall be not more than 286°F (141°C) where located in a smoke control system complying with Section 909.
3. Where a combination fire/smoke damper is located in a smoke control system complying with Section 909, the operating temperature rating shall be approximately 50°F (10°C) above the maximum smoke control system designed operating temperature, or a maximum temperature of 350°F (177°C). The temperature shall not exceed the UL 555S degradation test temperature rating for a combination fire/smoke damper.