O where the size of the duct permits access doors should be at least 18 inches x 16 inches in size.
Fire smoke damper access door requirements.
Wall is 1 hr or less building is fire sprinklered entire duct system is 26 ga.
Lss fire damper inspection and smoke damper inspection.
Access doors are designed to provide entry to ductwork to access fire products.
Has provided underwriters laboratory approved fire dampers as well as other essential products for the h v a c.
Some smoke dampers are aluminum whereas fire smoke dampers are galvanized or stainless steel.
Nfpa 80 is the national fire protection association standard that regulates the installation and maintenance of assemblies and devices used to protect openings in walls floors and ceilings against the spread of fire and smoke within into or out of buildings.
Regular maintenance of fire and smoke dampers is required by the national fire protection association and the international building and fire codes and is enforced by authorities having jurisdiction ahj s such as the joint commission fire marshals and insurance risk auditors.
Nfpa 105 is the standard which prescribes the minimum requirements for smoke door assemblies and smoke dampers that are used as a means to restrict the flow of smoke though openings to provide safety to life and protection of property.
The system is more sophisticated and requires coordination among alarms sprinklers fans doors and dampers.
Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c.
Pertinent information on maintenance is provided in annex b.
We manufacture both non fire rated doors as well as a 1 5 hour fire rated access door.
Products for over 35 years.
Often times dampers get labeled inaccessible when access can t be located at first glance.
In reality most of these fire and smoke dampers can be reached if you look a little harder.
Fire damper required smoke damper required typically ducts shall not penetrate fire walls but if allowed then damper is required no requirements stated in section yes unless penetration meets astm e119 or ul 263 or meets all of the following.
Since the development of modern fire damper protection equipment lloyd industries inc.
In order to find access to some dampers it s important to thoroughly check the area for access doors.
Nfpa 105 is the standard which prescribes the minimum requirements for smoke door assemblies and smoke dampers.
Fire dampers must meet the ul555 test standard.
Maintenance of fire dampers ceiling dampers smoke dampers and combination fire smoke dampers requirements can be found in nfpa 80 standard for fire doors and other opening protectives and nfpa 105 standard for smoke door assemblies and other opening protectives.
It is the control capability of the smoke control system damper that is different.
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