Fire Damper Access Door Requirements

Install new access doors there are instances where the initial construction of a building didn t take into consideration that your dampers will have to be inspected leaving access doors nowhere to be found.

Fire damper access door requirements. Fire dampers are ul555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems designed to close upon the detection of heat. Products for over 35 years. O the doors should be located as close as practicable to the dampers. Combination fire and smoke dampers can be controlled several ways.

Maintenance of fire dampers ceiling dampers smoke dampers and combination fire smoke dampers requirements can be found in nfpa 80 standard for fire doors and other opening protectives and nfpa 105 standard for smoke door assemblies and other opening protectives. A combination fire and smoke damper looks very similar to a smoke damper but has a high temperature sensor to close the damper from heat along with the local smoke detector. Ul 555s is the test standard for smoke dampers. All ul listed dampers are tested according to ul test standards.

Since the development of modern fire damper protection equipment lloyd industries inc. Since a fire damper is not made to prevent the spread of smoke only combination smoke fire dampers or stand alone smoke dampers are leakage rated devices according to the underwriters laboratories standard. O the doors for fire dampers should be located so that the spring catch and fusible links are accessible when the damper is closed. Combination fire smoke dampers must meet the test requirements for both ul test standards.

Another difference between a fire damper and a combination smoke fire damper is the device s ability to be closed by an electronic release. Based on these tests dampers are then given a fire rating leakage rating or both for. Pertinent information on maintenance is provided in annex b. The duct the access doors should be increased to at least 24 inches x 16 inches in size to allow a person to enter the duct.

Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c. Combination fire and smoke damper drawing courtesy of ruskin company. Certain access doors can also be located on the opposite side of the wall where the damper is located. Sure clamp is a sure way for you to fullfill the new code requirements of the nation fire protection association.

Sure clamp is the safest and easiest way to inspect and maintain fire and smoke dampers.