Fire Damper Types

The term fire damper is defined by approved document b fire safety volume 2 buildings other than dwellinghouses as a.

Fire damper types.

This installation instruction applies to fire dampers static dynamic curtain single and multi blade types mounted in the plane of an ul approved fire partition. Applications where fans shut down. Compared to an type a damper the total square inches. Rated static fire dampers.

Please call for price. Type c dampers can be ordered with low pressure less than 3 w c medium high pressure from 3 w c. When a rise in temperature occurs the fire damper. Type a b c.

The dampers are to be installed square and free from twisting or racking. Fire dampers are devices designed to impede the spread of fire through walls floors and partitions. 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. When the damper or damper assembly exceeds either 48 in width or 60 in height the retaining angles should not be less than 1 1 2 x 1 1 2 x 1 8 thick and should be attached to the sleeve using 20 1 4 x 3 4 round head stove bolts at 8 on c.

14 x 3 4 sheet metal screws at the same spacing. Home fire dampers duct fire dampers static type duct fire damper. Type a dampers are the easiest and fastest type to install and are mostly used in low pressure part of duct systems up to 2 w c. Fire damper designing buildings wiki share your construction industry knowledge.

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. Aire technologies 05 series 3 hr. Fire dampers are installed in fire walls fire barriers fire partitions and horizontal assemblies. Up to 10 w c or high pressure 10 w c pressure ratings.

1 long welds or no. The dampers are designed for operation in the vertical or horizontal position with blades running horizontal. Fire smoke dampers are similar to fire dampers in fire resistance rating and also prevent the spread of smoke inside the ducts. The type c fire damper is generally used where velocities are medium to high and free area is a consideration.

A fire damper closes once the temperature of the duct becomes high enough to melt the fusible link which holds it open. Click thumbnail to view image. They work to help stop the spread of flame through your air ducts. A mechanical or intumescent device within a duct or ventilation opening that operates.