Informal advice on PIR positioning

[datadiffusion]

They are good - but will be potentially blinded by the light / triggered by heat gains from those big windows.

 

You definitely want to consider a corner mounted, pointed away from window, dualtech i.e. MW/PIR DT  IMHO

 

TBH I only ever use ceiling detectors in wide open office spaces and as a last resort - if I had as good access as you seem to (I wasn't sure if you did being it was a flat) I'd go corners every time.

 

I was going to suggest a ceiling one, maybe, in that living space narrow bit, but I really wouldn't bother, tbh

Edited December 22, 2016 by datadiffusion

[MarkJohnson]

Great help, thank you. I am sure I will have a couple more questions, but for the time being, I roughly know what is needed.

 

Going for Texecom Premier Elite range, wired.

[al-yeti]

6 hours ago, MarkJohnson said:

Great help, thank you. I am sure I will have a couple more questions, but for the time being, I roughly know what is needed.

 

Going for Texecom Premier Elite range, wired.

You running any 12core in this system?

[MarkJohnson]

I was just going to use 4 core for the door sensors, and run 6 core cable for the PIR sensors...I don't need 12 core anywhere, do I?

[andy™]

42 minutes ago, MarkJohnson said:

I was just going to use 4 core for the door sensors, and run 6 core cable for the PIR sensors...I don't need 12 core anywhere, do I?

 

4 core will do for most detectors if using EOL, although i usually use 6 core

 

if you do use texecom, the RKP has onboard zones too, so you can wire detectors back to there, gives you 10 zones without needing an expander

[al-yeti]

What about 4mm twin and earth you use any?

[james.wilson]

al that joke is literally dead mate

[datadiffusion]

Did anyone send a card in the end?

[MarkJohnson]

Morning folks, sorry for the delay, but a small update for you all, with the added Brucey Bonus of a couple questions! 

 

In terms of cabling, I've run 6 core to most locations and ordered some Elmdene door contacts (flush mount for wooden doors, surface mount for aluminium sliding patio doors in living room / master bedroom, EOL resistors as recommended, so thanks for that! 

 

In terms of PIR sensors, I've gone for Texecom's Premier Elite DT sensor, as recommended (thank you Mr DataDiffusion) so I get both volumetric and microwave coverage. So far, so good.

 

However, I still have some sensor positioning questions...pics to illustrate.

 

Locations #1 + #2 are fine, I think we agree on that. Main issue is what to do about the big open space that is the kitchen / living room? 

 

(1) Location #5 is about 5.5 metres away from the large patio doors but still faces / look at them. This would cover the living room area. Is this an ok location for the DT sensor or should it be elsewhere in the room?

 

(2) I'd like a DT sensor in location #3 if possible, as that will cover anybody trying to sneak in via the bathroom...would location #3 be ok? I would like to avoid location #4 as it is directly above a vertical radiator, whereas with #3 it is further away from the rad.

 

(3) If I go with #5 and #3, because of the beam that is boxed in by the plasterboard, they wouldn't see each other hence won't false alarm? Or would they?!

 

 

 

 

[datadiffusion]

5 is as good as it gets whilst still avoiding the rads...

 

3 and 4 for me much of a muchness, if 3 is a little bit further from the rad, that's possibly better.

 

The microwave beam can go through walls - but that's why it's adjustable to prevent that when it's installed.