Fire Damper Access Door Location

O the doors for fire dampers should be located so that the spring catch and fusible links are accessible when the damper is closed.

Fire damper access door location. Over the years we discovered many deficiencies with small damper access openings. Based on these tests dampers are then given a fire rating leakage rating or both for. With over 50 years of experience in the hvac industry we have inspected thousands of fire and smoke dampers. Dampers equipped with fusible links internal operators or both shall be provided with an access door or.

Since the development of modern fire damper protection equipment lloyd industries inc. Fire smoke dampers are similar to fire dampers in fire resistance rating and also prevent the spread of smoke inside the ducts. Install in accordance with the manufacturer s installation instructions in fire resis tance rated floor ceiling or roof ceiling assemblies. Install as shown in figure 1 a.

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. Products for over 35 years. They were always way too small to perform meaningful inspections maintenance was next to impossible and the edges were often sharp and unsafe. The non fire rated doors come hinged or double cammed galvanized or stainless steel and can be made square rectangular or round.

O the doors should be located as close as practicable to the dampers. When a rise in temperature occurs the fire damper. We manufacture both non fire rated doors as well as a 1 5 hour fire rated access door. Ul 555 is the test standard for fire dampers.

Damper fsd ceiling fire radiation damper. Mounting angles must overlap opening 1 in. Access door or panel a. Fire dampers installation instructions.

All ul listed dampers are tested according to ul test standards. Fire dampers are passive fire protection products used in heating ventilation and air conditioning hvac ducts to prevent the spread of fire inside the ductwork through fire resistance rated walls and floors. Has provided underwriters laboratory approved fire dampers as well as other essential products for the h v a c. Store in an orderly manner at a safe location away from construction traffic material etc.

Access doors are designed to provide entry to ductwork to access fire products. Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c.