Floor Fire Damper Installation

Detail of opening preparation and fire damper installation.

Floor fire damper installation.

A general diagram of a standard fire damper installation is shown in figure 1. While there are other elements of an approved damper installation this figure will represent the. The dampers are to be installed square and free from twisting or racking. For damper styles wr wc wo and bc only the duct connection portion extends through the wall and the damper assembly is mounted flush with the wall.

The dampers are designed for operation in the vertical or horizontal position with blades running horizontal. The retaining angles on both sides of the fire damper may be inverted in order to accomodate a register or grille. A space between the sleeve and wall or floor is left to allow for thermal expansion in the event of heated airflow through the damper sleeve assembly. The standard location permits the damper to be installed outside the plane of the wall or floor.

These fire dampers offer protection in the case of a fire by preventing the flames from spreading through your ventilation and air ducts. Dampers must be kept clean and protected from dirt dust and other foreign materials prior to and after installation. 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. Fire dampers are typically installed in fire rated walls floors or partitions.

Safe air dowco s installation notes are applicable to fire dampers smoke dampers and combination dampers on most occasions. The following information may vary among different manufacturers and should not serve as a general guide of damper installation. Vertical dampers for static airflow systems do not have springs. If a fire damper is installed in a floor it will be in a horizontal position.

2 1 2 stud or runner 1 2 gypsum wallboard retaining angle damper sleeve fire damper duct 1 2 thick filler pieces 2 1 2 wide to be. Damper dimensional data duct transition connections dibd2 ow and dibd2ss ow dampers may be supplied. Fire damper installation operation maintenance instructions iom fire dampers 0718 nca manufacturing inc.