Where should smoke dampers be installed?
Smoke dampers must be installed at or adjacent to the point where the duct passes through the smoke barrier in accordance with NFPA 90A. The maximum installation distance is 24″ (610 mm) from the smoke barrier, however, the preferred location of leakage rated smoke dampers is in the smoke barrier.
When would a fire damper be 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.
Are smoke dampers required in a 1 hour wall?
For 1-hour or less walls, no damper is required where ductwork is minimum 26 gauge and the ducts do no serve the corridor. Non-fire rated wall that is provided to resist the passage of smoke in specific instances.
Are smoke dampers required in smoke partitions?
The correct answer should exclude smoke damper as HVAC ducts penetrating RATED partitions are required to use fire damper only.
What is the difference between smoke dampers and fire dampers?
Whilst fire dampers function to help stop the passage of fire, smoke dampers work in a similar way to preserve the integrity of physical smoke barriers e.g. floors and walls. They can also be found within air conditioning and ventilation ductwork.
Do you need a fire damper in a 30 minute wall?
Where a duct passes through a fire hazard room, but does not serve it, fire dampers are not required but the duct must have fire resistance of 30 minutes in respect to integrity and insulation.
What is the difference between a fire damper and a smoke damper?
Fire dampers are provided with an hourly fire rating. Smoke damper’s primary function is to control the movement of smoke in dynamic air distribution systems, and they reduce the possibility of smoke transfer within ductwork or through wall openings.
Does a 2 hour fire-rated wall require a fire damper?
If the air duct is an air transfer opening (meaning it is not fully ducted) at the fire-rated barrier, then the duct needs a fire damper where other openings are required to be protected as well. However, two-hour fire-rated barriers do require fire dampers in fully ducted HVAC systems.
Do fire dampers need to be monitored?
Dampers must be installed per International Building Code (IBC) and National Fire Pro- tection Association (NFPA) Standard 1053. Code requires that all combination fire/smoke dampers be inspected and tested prior to occupancy and then tested again, one year later.
What is an ES fire damper?
Actionair – Actionair ES Rated Automatic Fire Damper CE Marked ‘ES’ Rated Fire dampers used to prevent spread of fire and smoke maintaining compartmentation.
What is the purpose of a fire smoke damper?
The fire damper secures the integrity of the existing barrier thus preventing fire penetration before temperatures reach the fire rating level of the barrier itself. Its primary function is to prevent the passage of fire from one side to the other of a fire-rated separation.
How to open a fire damper?
Poker dampers. Poker dampers operate on a long,curved handle. The handle has grooves in it to hold the damper in place.
How to properly inspect and test fire dampers?
• The operational test of the damper must verify that there is no damper interference due to rusted, bent, misaligned or damaged frame or blades, or defective hinges or other moving parts. • The damper frame must not be penetrated by any foreign objects that would affect fire damper
What is a fire damper and how does it work?
Conduct a visual inspection – With a flashlight in hand,you can look inside the fireplace up towards the chimney to verify if the damper is open or closed.
The hour ratings for fire dampers must be 75% of the hour rating for the wall, floor or partition. That is why a fire damper rated for 1.5 hours can be used in a fire barrier rated for up to 2 hours and a fire damper rated for 3 hours can be used in a fire barrier rated up to four hours. STATIC AND DYNAMIC CLOSURE FIRE DAMPERS: