Where should smoke dampers be installed?
Where should smoke dampers be installed?
Smoke dampers do not have to be installed in sleeves – they can be installed directly into the duct. However the joints between the damper frame and the duct must be sealed. This is to prevent any air leakage.
What is the difference between smoke dampers and fire dampers?
A fire damper closes once the duct temperature reaches a high enough level to melt a fusible link. A smoke damper closes upon the detection of smoke. It is UL leakage-rated to stop smoke in its tracks, which is a main difference from fire dampers.
How does a fire smoke damper work?
Fire dampers respond to heat, when the temperature reaches a set point the damper slams shut. Smoke dampers respond to the detection of smoke, and close automatically. They can also be activated remotely. They resist the passage of smoke, toxic gases and air through a fire barrier.
What is a fire and smoke damper?
A fire damper is installed within the duct where the duct intersects the barrier. They operate using a heat sensitive device that, when activated, melts and causes the damper components to close. A smoke damper can also be installed within the duct, and is activated by a signal from a smoke detector within the damper.
How do you adjust a fire damper?
Using the Fireplace Damper
- Step 1: Open the Damper. When lighting a fire, move the damper into its fully open position.
- Step 2: Adjust the Damper. After starting the fire, adjust the damper to the half-closed position.
- Step 3: Monitor the Fire. Keep a close eye on the fire as it continues to burn.
Where are fire dampers used?
Fire Dampers are used in air transfer openings, ducts and other places where fire rated structures (e.g. walls, floors or other fire barriers) are penetrated.
What are the two types of fire dampers?
There are two types of fire damper closing system: those with a fuse mechanism and those with an actuator, which is motorised, and to which you can connect a smoke detection system.
How are smoke dampers activated?
Smoke dampers can be activated by the fire alarm system, usually initiated by smoke detectors, or interlocked with a fire suppression system.
Do smoke dampers need to be on emergency power?
Either emergency power should be provided or smoke dampers should be arranged for fail-safe closure upon failure of power to the actuator. Both the IBC and NFPA require that adequate access be provided to allow inspection and that maintenance of the smoke damper be provided.
Should the damper be open all the way?
The damper should be kept open until all embers are finished burning to prevent smoke from escaping into the home. When the fireplace is not in use, the damper should always be closed. An open damper is like an open window, allowing large amounts of heat from the home to escape.
What are the model numbers of Nailor fire dampers?
Supplementary Installation Instructions For Fire Dampers & Combination Fire / Smoke Dampers Ceiling Dampers for use in Non-Suspended Wood Truss Ceiling Assemblies Model Series: 0755, 0756, 0757, 0758, 0759, 0760, 0761 & 0762
Where does a fire damper need to be installed?
The fire damper must be installed such that the centerline of the blades are mounted in the plane of the wall or floor. All fire dampers may utilize the two-sided angle installation method described below. 11⁄
What are the requirements for UL 555 fire dampers?
Specific requirements in these instructions are mandatory. Dampers must be installed in accordance with these instructions to meet the requirements of UL 555. Note: Fire dampers are manufactured and labeled for either vertical or horizontal installation. The dampers must be installed in accordance with labeling. Receiving and Handling
How big does a stainless steel damper need to be?
• For stainless steel dampers and stainless steel or galvanized sleeves: 3⁄ 16in. per foot (5mm per .3 m) of damper width and height with a minimum clearance of 1/4 in. (6mm), maximum of 2 in. (51mm).