Clarifications on UL Standards and Codes for Replacement Applications

Code – What You Need To Know!

Underwriters Laboratories
The UL Marking and Application Guide, Dampers for Fire Barrier and Smoke Applications & Ceiling Dampers April 2003, UL states that UL555 & UL555S do not regulate replacement applications. UL555 and UL555S are construction, testing, and factory standards. UL does state that it is “expected that replacement of actuators in the field be done in accordance with the damper manufacturer’s normal field servicing program.”  Belimo provides replacement instructions which can be given to the AHJ to show that accepted procedures will be followed.

NFPA 80 and NFPA 105

• NFPA 80 regulates fire dampers and fire doors.  NFPA 105 regulates smoke dampers & smoke doors.
• Both standards state defective dampers must be repaired immediately.
• List of inspection points that should be performed to ensure dampers are in working order.
• Both standards require that a record of repairs is kept on the premises.  
• Testing intervals are established at initial commissioning, one year, and then every 4 years except in hospitals which must test each device every 6 years. Local codes vary and overide national standards.  Consult your local Fire Marshal or Building Official.
• NFPA 80 and 105 are adopted by reference in the International Building Code and most state or local codes.  Sections 703.1.2 and 703.1.3 of the International Fire Code also reference NFPA 80 and NFPA 105.

Learn more at Belimo or contact a Belimo Technical Support: East Coast 800 987-9042, West Coast 800 987-9042, Canada 866 805-7089.