Stand alone electric bell/gong is never under 72 since it is not part
of a fire alarm system. A stand alone electric bell/gong would be
subject to 13 for reporting (i.e.: making noise) so five minutes and
NFPA 70 for installation. NFPA 72 only applies when a fire alarm
system is present. I don't put quick response heads in a auditorium
because it's an assembly building per IBC but because it's a light
hazard occupancy per 13. I do put in the system to begin with because
it's an A occupancy.

On Wed, Jul 15, 2009 at 12:03 PM, Thom McMahon<[email protected]> wrote:
> My personal take on this is the time to operate has always assumed that 13
> and the 5 Min. limit referred to a water motor gong device, and 72 referred
> to any electrical device I.E. flow switch or pressure switch. Water motor
> gongs just seem to take longer to activate, and require a fairly steady
> flow. Most flow switches are soo-oo-oo sensitive that they respond to surges
> so often they need to be retarded 30-60 seconds to ensure that it is an
> actual head going off.
>
> Thom McMahon, SET
> Firetech, Inc.
> 2560 Copper Ridge Dr
> P.O. Box 882136
> Steamboat Springs, CO 80488
> Tel:  970-879-7952
> Fax: 970-879-7926
>
>
>
>
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-- 
Ron Greenman
Instructor
Fire Protection Engineering
Bates Technical College
Tacoma, WA

Member:
SFPE, ASCET, NFPA, AFSA, NFSA AFAA
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