How do I disconnect a burglar alarm sensor?

markjg123 · Posted: Wed Mar 09, 2011 7:29 pm

I need to permanently remove a wired sensor from my Veritas R8 alarm system. The sensor I want to disconnect is spurred from another sensor. Can anyone advise on how to do this?

Alarm · Posted: Thu Mar 10, 2011 1:28 am

Carefully, is the first answer.
Have you the engineering code?
Without this the panel will activate and go into alarm.
It might be programmed for user reset.
Take detector apart or lift the lid on the panel and then refit and use your code. If it resets your in luck. If not you need an engineer to assist.

markjg123 · Posted: Thu Mar 10, 2011 9:03 am

The only code I have is the user PIN to set/reset the system. The system was installed before I moved in and I wasn't left any documentation. Clearly I should have asked the previous owner who the installer was. This may be a very dumb question but if I manage to find a local engineer how will he know the engineer code? Is this a specific code known only to registered installers or could it have been set by the installer?

mryoung · Posted: Thu Mar 10, 2011 12:36 pm

markjg123 wrote:

The only code I have is the user PIN to set/reset the system. The system was installed before I moved in and I wasn't left any documentation. Clearly I should have asked the previous owner who the installer was. This may be a very dumb question but if I manage to find a local engineer how will he know the engineer code? Is this a specific code known only to registered installers or could it have been set by the installer?

He wont know the code as this is specific to the installer, it may even still be set to default but this is unlikely.

Any engineer worth his salt can reset the code to default for you.

Alarm · Posted: Thu Mar 10, 2011 3:20 pm

As Mr Y says.

For local assistance use these leads.

http://www.ssaib.co.uk/
Or
http://www.nsi.org.uk/

Alarm · Posted: Thu Mar 10, 2011 3:23 pm

Sorry for the poor spelling of assistance.
It seems this will not let me edit.

Alarm · Posted: Thu Mar 10, 2011 3:24 pm

Alarm wrote:

Sorry for the poor spelling of assistance.
It seems this will not let me edit.

Now it does!!!!!!!!

markjg123 · Posted: Fri Mar 11, 2011 12:28 pm

OK. I've taken the front panel off the 2 sensors and the wiring is very different. I've attached photos. The first is the sensor I want to keep. The second is the one I want to remove. The 'surplus wiring' from the sensor I want to remove is just tucked behind the one I want to keep.

So what do I do now?

Alarm · Posted: Fri Mar 11, 2011 3:36 pm

The first one is fitted incorrectly.
The second is correct.
REd and Black being the power.
Alarm is Blue/Yellow.
Tamper Green and White.
Drop the green and white into the spare terimnals of the first pir. As it is "back to back".

markjg123 · Posted: Fri Mar 11, 2011 5:44 pm

OK. Can you explain why the first one has a twisted pair of red and black wires? Do I need to do anything with them?

Once I've connected the green and white to the first PIR, am I good to completely remove the second one?

markjg123 · Posted: Fri Mar 11, 2011 7:43 pm

Both PIRs are supplied by an eight core wire - red/black/blue/yellow/green/white/orange/brown.

The PIR I want to keep is connected directly to the control panel. It has red/black/blue/yellow connected to terminals as shown. The green/white wires are not connected to anything. The brown wire is connected to the yellow wire (using insulation tape) that runs to the other PIR. The orange wire is connected to the blue wire (using insulation tape) that runs to the other PIR.

The PIR I want to remove is the one with the orange/brown wires on show but are not connected to any terminals. It has red/black connected to red/black in the PIR I want to keep. The green/white/orange/brown wires are not connected to anything even though green/white are connected to terminals in the PIR. The yellow/blue wires are connected as described above.

Can you please decipher for me and explain how to (a) disconnect the PIR I want to remove and (b) correctly wire the PIR I want to keep?

Alarm · Posted: Fri Mar 11, 2011 7:53 pm

The twisted pair are the power.
The others are alarm and tamper.
It even tells you on the board/PCB in the detectors which is which.

markjg123 · Posted: Fri Mar 11, 2011 8:21 pm

Sorry, I worked out that much.

I can't figure out why:

1) The tamper wires from the panel are not connected to the PIR I want to keep.

2) One end of the tamper wires from the spur cable are connected to PIR I want to remove but the other end is not connected to anything.

3) The alarm wires from the spur cable are connected to orange/brown from the panel cable.

Do I stop worrying about this and simply:

A) Disconnect the power wires in the spur cable from the PIR I am keeping.

B) Disconnect the alarm wires from the spur cable that are connected to orange/brown from the panel cable.

C) Connect the tamper wires from the panel cable to the PIR I want to keep.

I assume brown/orange are not required.

Alarm · Posted: Fri Mar 11, 2011 9:14 pm

Without looking and tracing all cables back.

It would be difficult to comment correctly.
But to answer as much as I can.

1,sloppy fitting.
2,See above.
3,Joints somewhere, hence the "series" fitting.

A, drop them the pir will stop working.
B,take them out see what happens. My guess is you will lose a circuit and the panel will not set.
C,Deffo keep the tamper, as you never know!

I assume the brown are needed, as its been fitted back to back. You will need to close that circuit off.

markjg123 · Posted: Sat Mar 12, 2011 11:46 am

All sorted!

Have completely removed the unwanted PIR and it's wiring.

Have connected the tamper wires on the PIR I kept - all the other PIRs in the house have been connected in this way.

Have completed a walk test and all is fine.

I initially got a zone open fault on the walk test for the zone where I'd removed the PIR. This was rectified once I joined brown/orange.

Thanks very much for all your help.