Re: Attic Smoke Detectors Question

["Norm Mugford" <1alarm@xxxxxxxxxxxxx>]

Thanks for your response, that's all I was looking for.

Norm

"Nomen Nescio" <nobody@xxxxxxxxx> wrote in message
news:3a4db730abfdfbee0ab46d1a1bfbc580@xxxxxxxxxxxx
> Norm Mugford said:
>
> >I've never had a problem with 135 degree heats in attics,
> >in Connecticut or here in Florida.
> >
> >What experiences have you had that causes you to
> >recommend a 194 or 200 degree heat?
>
>
> Norm, you should not use 135 degree heat detectors in locations where
> ceiling temperature exceeds 100 degrees.  See the following link for proof
> (scroll down to "Specifications"):
>
> http://www.chemetronics.com/500.shtml
>
> I think we can all agree that attics sometimes exceed 100 degrees.  And
> yes, I have seen 135 degree rate of rise heads pop.  It's not the rate of
> rise portion that goes, it's the fixed temperature sensor that melts.
>
> In almost all fires, the rate of rise detection system will trip long
> before the fixed temperature is reached.  The only exception is a fire
> where the increase in temperature is very gradual.  The rate of rise
sensor
> is exactly the same in a 136 degree detector as in a 190 degree detector,
> meaning that in almost all cases, both units will perform identically.  So
> there is little to lose by using a 190 degree detector, and much
> reliability to be gained.
>
> - badenov
>