Re: Attic Smoke Detectors Question

[Crash Gordon® <NONE@xxxxxxxx>]

You can get a 135 to trip with just the heat from rubbing your hands =
together.



"Anonymous" <nobody@xxxxxxxxxxxxx> wrote in message =
news:3a4db730abfdfbee0ab46d1a1bfbc580@xxxxxxxxxxxxxxxx
> Norm Mugford said:
>=20
> >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?
>=20
>=20
> 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"):
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> http://www.chemetronics.com/500.shtml
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> 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.
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> 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.
>=20
> - badenov
>