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

[Kevin <Spiritbranson@xxxxxxxxxxxxx>]

"Roland Moore" <nospam@xxxxxxxxxx> wrote in
news:47202e54$0$9631$4c368faf@xxxxxxxxxxxxxx:

>>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.
>

I Have 5 DSC encore motion detectors installed on my premises. I have to
say if installed properly they are very good units. In the 3 years my
system has been in service I have not had any false alarms attributed to
the motion detectors. In the interim maybe the system may be placed in
cross zone or double hit mode if available to reduce the possibility of
these false alarms.


>
> "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?
>>
>
>
>