Re: PIRs for house with ceiling heating & cooling vents and "pets"!

["Roland Moore" <nospam@xxxxxxxxxx>]

>However, the guy I spoke to is trying to get me to >accept that this is the
way it is, and that I should never >ever let my heating come on when the
alarms are armed.

That has to be one of the most ridiculous things I have ever heard. However
I want to say this guy must have a pretty large pair to say that to you, as
a customer of his. Certainly you should not have to worry about normal
residential heating and cooling issues with a modern, properly installed
motion detector. Now if you have a blast furnace and are smelting steel,
then there could be a real problem. Short of that extreme he needs to fix
the problem. It is not that unusual to have motion detections issues on a
new installation. Those problems are easily taken care of most of the time
with a single return visit. I have nothing good to say about the DSC motion
detectors you've purchased. I have said and will say again that the Bosch
TriTech units would be far better detectors for you to have.


"eddy" <eddyweddy@xxxxxxxxx> wrote in message
news:1193284872.335379.170150@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> On Oct 25, 2:35 am, "alarman" <thatsallfol...@xxxxxxxxx> wrote:
> > eddy wrote:
> > > I recently had an alarm system installed, consisting of a NX-16 panel,
> > > magnetic reeds on all doors and DSC encore PIRs in the main living
> > > areas. The PIRs, according to the installer are immune to small pets.
> > > In my case the pets consist of one 12kg Cavalier King charles spaniel
> > > who spends all his time sleeping and a 8kg, 15 year old cat who sleeps
> > > even more! Then there are the 2 Roomba discovery automatic vacuum
> > > cleaners, dinner plate size gadgets who run around the house at
> > > regular intervals sucking up debris.
> >
> > > However, it was not this collection of pets who appear to have caused
> > > the problem. I also have heating and cooling ducts in the ceiling
> > > because the house is all on one level and built on a concrete slab. At
> > > the moment, because it's still early spring here, the heating
> > > occasionally comes on at 6.30pm. Because I sometimes get home only
> > > after 7.30pm, the heating has been running for around an hour. Over
> > > the last 8 weeks, practically every PIR in the house has falsed at
> > > least once after 6.30pm. Some of the heating ducts are within 3 ft of
> > > the PIR.
> >
> > > To be absolutely sure, I have actually "banished" the pets from the
> > > house, but the false alarms still continue.
> >
> > > To make matters worse, even if I did disable the timers that operate
> > > the thermostat, my heating unit is a ceiling mounted model which has a
> > > fan controller that is triggered by the ambient temperature inside the
> > > unit. In days that are hot enough, the heat in the roof is actually
> > > high enough to trick the fans into coming on, which in turns causes
> > > warm air to circulate into the house. And this has caused at least one
> > > false alarm ...
> >
> > > In a situation like mine, are there PIRs which are capable of handling
> > > the disturbance from the heating ducts, or is the only option to have
> > > the PIRs removed from the security system ?
> >
> > > rgds, Ed
> >
> > The PIR's were installed (located) incorrectly by an inexperienced
> > installer. They need to be relocated away from the heatong ducts, or at
the
> > least, replaced with dual-technology units. Who did the install?
> >
> > --
> > js
> >
> > - The bigger they are, the harder they fall.
> > ( Also, the harder they bite, punch, and kick.)
>
> Hi alarman,
>
> Yes, some of the PIRs are actually quite close to the heating ducts.
> The people who did the install are a Melbourne company called Insec
> security http://www.insec.com.au/ (Yes I am in Australia) . I have
> already called them. So hopefully they can do something. However, the
> guy I spoke to is trying to get me to accept that this is the way it
> is, and that I should never ever let my heating come on when the
> alarms are armed. If he is correct, I might have to get some highly
> paid heating technician or electrician to figure out how to ensure the
> heaters can  be totally disabled!
>
> On the idea of dual tech PIRs, if I understand the theory correctly,
> is it because of the microwave element that this technology might be
> less vulnerable to alarming when the heaters come on?
>