Powered doors with PIR sensors

[kurnal]

Trying to pin down some info re powered doors fitted to many buildings to improve access for non ambulant persons. Some of the appear to be controlled solely by PIR sensors and I was wondering what effect a fire or hot smoke sould have on the PIR sensor? If the door was part of a staircase enclosure would it be prone to opening if there was a fire in the vicinity? Is the PIR sensor disabled if the interconnection from the fire alarm causes the door to close?

I wrote to one manufacturer who sent me a link to their website but did not answer my question. Anyone else looked into this?

http://www.besam.com/en/besam/besam/Downloads/Swing-doors/Swing-Door-Operators/PowerSwing/

[Mr. P]

Yes K!
Have not not got to hand the black and white hard print but;
There have been cases where flame flicker has opened doors on PIR. We will not recommend (allow) PIR's on protected routes or within compartmentation boundaries etc. Go for a push pad system.

[SamFIRT]

The activation of PIR security sensors is one method of identifying the time and origin of a flaming fire in a property by fire investigators. I have used this method myself on many occasions. For example it is not unknown for a property to have a PIR activated security alarm operate and send a message to a central alarm station, either before or after fire or smoke detection. Obviously this is only one piece of the jigsaw and intruders have to be eliminated .

So in short I would say that using a PIR to activate doors in a fire situation is a bad idea. Unless the engineers on this forum can convince me otherwise.