[SML] Smoke vs Heat vs Rate of Rise detectors

[Bruce Bennett]

Have had good luck with high-rate-of-rise heat detectors and recommend them inside theatres and in adjacent areas as your AHJ will permit.

From Bruce’s iPad

> On Mar 7, 2022, at 19:31, Riter, Andrew via Stagecraft <stagecraft at theatrical.net> wrote:
> 
> 
> The university has said our entire fire alarm system needs to be upgraded.
>  
> When designed in the late 90s (opened in 1997), the designers put heat detectors in the venues, but missed the “shared” areas that look like separate rooms on the drawings but actually share the same air (they put smoke detectors in the pit, Front of House Cove, venue light locks, and air return system).
>  
> I’d love to take this opportunity to replace a bunch of the smoke detectors with Heat detectors, but I believe there is a difference between Rate of Rise detectors and “set off at x degree level of heat” detectors.
>  
> Can anyone give me a quick primer on these types of heat detectors, and advantages / disadvantages of each?
>  
> Thanks everyone.
>  
> Andrew M. Riter 
> Assistant Technical Director, Head Lighting Technician
> Chan Centre for the Performing Arts
> The University of British Columbia | Vancouver Campus
> 6265 Crescent Road | Vancouver BC | V6T 1Z1 Canada
> Phone 604 822 2372
> andrew.riter at ubc.ca
> 
>  
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