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What Is A Class 1 Air Duct?

January 24, 2024 by David Martineau

What Is A Class 1 Air Duct? What is Class 1? Class 1 represents a material which shall have a flame spread rating of not over 25 without evidence of continued progressive combustion and a smoke-developed rating of not over 50. What is class1 duct? To be identified as an official Class 1 duct, the

How Do You Reset A Fire Smoke Damper?

January 24, 2024 by Rebecca Patel

How Do You Reset A Fire Smoke Damper? Depress the disc on DRS-30 or HS-10 (located inside the duct. This will disconnect power to the actuator and cause the damper to close. Push the reset button (located outside the duct) to reengage power and reopen the damper. What triggers a smoke damper? Smoke dampers can