Re: Fire Side Chat -- Fire Alarm Code Issue

["Frank Olson" <feolson@xxxxxxxxxx>]

"Robert L. Bass" <robertlbass@xxxxxxxxxxx> wrote in message
news:7NKdnTuLffaPzfDfRVn-1Q@xxxxxxxxxxxxxx
>> NFPA 72-2002 11.7.6.7  Installations that include the connection of
>> single-or multiple-station alarms with other input or output devices,
>> such as but not limited to relay modules, remote signaling devices, phone
>> dialers, security panels, heat detectors, and manual pull stations, shall
>> be
>> permitted, providing that an open or short circuit of the wiring leading
>> to these input or output devices does not prevent normal operation of the
>> single- or multiple-station alarm.
>
> The devices also have to be listed for the purpose.


Any add-on relays to interconnect the smoke alarms to the security system
must be compatible with the smoke alarms, yes.  There is no compatibility
requirement for normally open/normally closed devices (simple switches or
relays) connected to a residential security system (with the exception of
those requiring full UL or ULC certification).  On two wire smokes there
definitely is as well any required power supervision relay.  Some smoke
alarms come with built-in relays for "connection with other output devices".
Nothing restricts you from hooking these types of alarms to a security panel
either.

The post you made that started this whole thing wasn't entirely incorrect
(as I've pointed out before, your heart was in the right place).  You should
however follow-up with Al and apologize.  Also advise him of the section of
NFPA which addresses this issue (so he doesn't wind up doing this dance too)
and hopefully we will all finally be able to put it to rest.