Re: Ion vs Photo smoke detectors

["Doug" <not@xxxxxxxx>]

The choice may have been made by the AHJ, not the installing company. We
have had to use Ion detectors before in areas that I would have specified
photo electrics

Doug.

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"Allan Waghalter" <awaghalter@xxxxxxxxxxx> wrote in message
news:XSF7h.26788$TV3.4528@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>I looked at a Notifier system installed recently by a major local fire
>alarm company today and found that they have installed Ion detectors in all
>of the classrooms of a school.  I would have spec'd these as photo
>detectors.  We had our first cold night last night and they had 3 smoke
>detectors in various class rooms go into alarm when the heat came on and
>burned the dust off the heat exchangers.  We only use heat here about two
>or three months a year (Houston Texas) so dust accumulates in the heat
>exchangers.  Am I wrong on the choice of smoke detectors?
>