INDUSTRIAL FIRE ALARM

[Leesparkykent]

Back to the OP... your probably using diode bases. Have a read of this especially page 6 http://www.gcg-es.com/Principals Pr...ley AIS 02 - Fire Detection Systems Guide.pdf

 

[daiplayer]

Back to the OP... your probably using diode bases. Have a read of this especially page 6 http://www.gcg-es.com/Principals Products/8 - Morley-AIS/Morley AIS 02 - Fire Detection Systems Guide.pdf

ah you legend axactly what i was looking for cheers

 

[telectrix]

basically, the diode in the detector base is there to preserve the loop continuity if the head is removed, so that although the system is in "fault", the rest of the loop detectors can still signal the panel to activate "fire".

 

[daiplayer]

basically, the diode in the detector base is there to preserve the loop continuity if the head is removed, so that although the system is in "fault", the rest of the loop detectors can still signal the panel to activate "fire".

excellent thankyou .

 

[Specialist]

HI AGAIN ALL

INSTALLING INDUSTRIAL FIRE ALARM FOR FIRST TIME. FOLLOWING INSTRUCTIONS BY MATE.

CAN SOMEONE EXPLAIN HOW THEY WORK ?

I THOUGH THEY HAD AN EOL RESISTOR TO GIVE A FIXED RESISTANCE VALUE THAT THE PANEL WOULD MONITOR. BUT WHEN INSTALLING HEAT DETECTORS EACH HEAD SEEMS TO HAVE A RESISTER IN IT.

IS THIS CORRECT ? WHY IS IT THERE ?

TIA

Ssshh, Stop shouting we're trying to sleep

 

[Michaelwgroves]

It's worth mentioning the installer must be "competent" as specified by the regs. You should also know the difference between part 1 and part 6. You need to read both.
Should something go wrong you would need to prove your competence. Due to questions I think you will find this tough.
There must be a design document which the designer must give the installer. If you do not have this document you must not install.
Once you have this a competent person can install, but must complete an installation certificate, Document variations to design, create installed diagram and provide test results.
You should fully expect there to be design limitations as the designer may not have been to site. Therefore you must be able to revise design.
It's not as simple as just putting heads on the ceiling, you need to take account of drop beams, light fittings, proximity to walls. Ceiling heights, distance between sensors. Which is different depending on type of sensor being used.
My advise is get yourself on some courses, most leading manufacturers do them for free, e.g. Apollo and Kentec. Both really good.
I also recommend the IFEDA courses, really good value and run by guys who really know their stuff.
Once you've completed some courses you will realise why you should not be doing this.