Fire Damper Access Door Requirements

Has provided underwriters laboratory approved fire dampers as well as other essential products for the h v a c.

Fire damper access door requirements.

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. 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. Combination fire and smoke damper drawing courtesy of ruskin company.

Ul 555 is the test standard for fire dampers. Sure clamp is the safest and easiest way to inspect and maintain fire and smoke dampers. All ul listed dampers are tested according to ul test standards. Sure clamp is a sure way for you to fullfill the new code requirements of the nation fire protection association.

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. Combination fire and smoke dampers can be controlled several ways. 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. Our unique clamping system is made with exceptional materials and installed using the highest industry standards.

O the doors for fire dampers should be located so that the spring catch and fusible links are accessible when the damper is closed. Based on these tests dampers are then given a fire rating leakage rating or both for. 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. Combination fire smoke dampers must meet the test requirements for both ul test standards.

Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c. Certain access doors can also be located on the opposite side of the wall where the damper is located. Another difference between a fire damper and a combination smoke fire damper is the device s ability to be closed by an electronic release. O the doors should be located as close as practicable to the dampers.

Ul 555s is the test standard for smoke dampers.