Re: 2 wire vs 4 wire Smoke allarms

[Frank Olson <Use_the_email_links@xxxxxxxxxxxxxxxxxxxxxx>]

Robo wrote:
> "Frank Olson" <Use_the_email_links@xxxxxxxxxxxxxxxxxxxxxx> wrote in message
> news:1r5Dg.366828$iF6.98903@xxxxxxxxxxx
>
>>Kurt Delaney wrote:
>>
>>
>>>>110V are different from 4 wire which are 12V or 24V.  you can hook up
>>>>relay from 110V to OMNI but that is against code.  The relay is not
>>>>listed for connection to alarm system. It appears condo has you in  a
>>>>Catch 22
>>
>>What's the difference between the relay in a 110VAC smoke alarm and a
>>24VDC smoke alarm?  Nothing.  There is no "code violation" as long as you
>>maintain a clear physical separation between the 110 and the low voltage
>>connections to the panel.
>
>
> here in the US we can only use parts in a fire alarm that are "LISTED" for
> the application.  If you check the relay for a 110V smokes you will see that
> it is not LISTED for interconnection to a fire alarm panel.  Maybe I used
> the wrong terminology when I said against code.  When the inspector flags it
> I just assume it a code problem.  What is the correct term?

There is nothing in the NEC that states you can't connect the relay of a
110VAC smoke alarm to a burg/security panel.  Most manufacturers of
110VAC smoke alarms *recommend* the relay not be used to interconnect to
a security system.  I believe this link will prove helpful:

http://www.icca.invensys.com/manuals/firex/110-278F.pdf