RE: New Comfort keypad install dilemma

["Paul Gordon" <paul_gordon@xxxxxxxxxxx>]

Well, I did it "hot" anyway, so the problem never arose. The new
keypad is
now up & running.

However, what I thought the problem was going to be, wouldn't (if I'm
right), have been solved by any method involving Comfort...

If I understand it correctly, the external bell-box contains its own
battery
which is able to sound the siren independently of any external alarm panel
settings... It is prevented from doing so by the 12V supply from the alarm
panel holding the circuit open (I presume via a relay)... Thus the presence
of the alarm panel is the only thing that stops the external siren from
sounding... Take away the 12V coming from the panel, and the siren goes
off,
and keeps going off until either the battery runs out (which could be
hours)
or until the hold-off current is replaced. I imagine it's done this way so
that the alarm isn't defeated simply by cutting the cable to the bell-box
(doing so would set it sounding)...

I could of course be completey wrong, but that's how I believe its supposed
to work... (makes sense to me anyway). Thus if I had totally powered down
the panel to make the modifications to the wiring, the external sounder
would be going off all the while i was doing it....

Anyway, like I said, not a problem after all, since I just did it without
turning the panel off, and didn't have any problems doing it that way...

Paul G.



>From: "Hawes,Timothy Edward (GEG)" <haweste@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: RE: [ukha_d] New Comfort keypad install dilemma
>Date: Mon, 26 Jul 2004 12:30:29 +0100
>
>Paul,
>
>Don't you just disarm Comfort with the "engineer" code ? That
way it
>knows you're going to tamper with it so doesn't sound the alarm. (just
>guessing though as I don't have Comfort).
>
>HTH,
>
>Tim H.
>
> > -----Original Message-----
> > From: Paul Gordon  Sent: 17 July 2004 13:05
> >
> > just received a new keypad that I plan to install this weekend.
> >
> > I've fitted up the keypad end, set the ID jumpers to ID2 etc....
> >
> > Next I need to connect it to the panel end. - never mind the
> > fact that I have no idea where the other end of the cable is
> > at the mo (I'll find it!), but I need to turn the panel power
> > off to make the connection to the Comfort PCB... Now when I
> > do this, the bell will immediately go off outside won't it....
> >
> > Is there an easy way to stop this?  -  could I use a
> > wall-wart to send 12V up to the bellbox? - If I do that,
> > presumably I'd have to disconnect it from the Comfort PCB
> > otherwise I'd be sending the 12V onto the PCB as well
> > wouldn't I? - so even if this would work, there would have to
> > be a brief period when there was no 12V going to the bellbox
> > whilst I made the switchover?....
> >
> > Or is my only option to get up the ladder and disconnect the
> > battery in the bellbox?
> >
> > Or could I connect the keypad to the PCB whilst it's is still
> > on without destroying my Comfort panel?
> >
> > TIA
> >
> > Paul G.
>
>+
>
>
>
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