Re: NFPA72

[nick markowitz <nmarkowitz@xxxxxxxxx>]

On Jan 28, 5:06=A0am, "Robert L Bass" <nore...@xxxxxxxxxxxxxx> wrote:
> I was parsing the article on household fire warning systems and noticed N=
FPA has
> resolved an issue we used to run up against with AHJ's now and then. =A0I=
f a
> customer's electrician had already wired the house for smoke alarms but t=
he
> client wanted monitoring for fire, I would suggest adding a few well-plac=
ed
> "duplicate" detectors to the alarm system. =A0It's fairly common practice=
. =A0But
> sometimes an AHJ would insist that if there were *any* system smokes adde=
d, we
> had to install a complete fire alarm system. =A0Customers would balk at t=
he cost
> and stay with unmonitored 110/9 Volt smokes.
>
> Anyway, 2010 code says it's not necessary. =A0It's spelled out in such a =
way that
> there's no room for misunderstanding, even by someone like the guy Jim to=
ld
> where to put his regulations.
>
> 1. The required minimum number and location of smoke detection devices sh=
all be
> satisfied (independently) through the installation of smoke alarms. [snip=
] The
> installation of additional system based smoke detectors, including partia=
l or
> complete duplication [snip] shall be permitted.
>
> #2 is the exact reversal of #1. =A0If you install system-based smokes up =
to code
> requirements, you can add more of the same, add independent smoke alarms,=
 etc.
> No harm, no foul.
>
> 29.3.4 Goes on to allow the addition of "supplementary" functions, includ=
ing
> extending the alarm beyond the residency, as long as it doesn't interfere=
 with
> the performance requirements.
>
> I didn't get the 2007 release so maybe this is old news but it was nice s=
eeing
> they fixed the issue.
>
> --
>
> Regards,
> Robert L Bass
>
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> Bass Home Electronics
> DIY Alarm and Home Automation Storehttp://www.basshome.com
> Sales & Service 941-870-2310
> Fax 941-870-3252
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they also clarified rules with ICC so this can be done.