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FIRE SAFETY => Fire Alarm Systems => Topic started by: lyledunn on July 18, 2012, 11:04:23 AM
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Advice issued via NICEIC requires that carbon monoxide detectors (used to detect the gas from faulty appliances rather than from a fire) should not be linked to the other fire detectors within a domestic property. The reason given is that an alert from the CO2 detector should put in to place a certain resonse from the persons being protected. For example, the opening of windows and doors might be appropriate for a CO2 alert but may not be so for a fire alert. That seems a very fair and obvious point. I have had a brief look through BS5839-6 but cannot pinpoint any reference to this situation. However, manufacturers instructions on domestic CO2 detectors clearly show how to link them to other fire detectors to form a complete system. As I understand it, if CO2 is detected only the CO2 detector will alert and will emit an audible signal different to that of the fire detectors. On the other hand, should there be a fire alert generated from other linked fire detectors then the CO2 alarm will similarly alert. Manufacturers, perhaps understandably, advise placing CO2 detectors not only in rooms containing fuel burning appliances but also in bedrooms as well as at other points such as hall ways and landings. This seems a very messy approach which could mean a CO2 detector being positioned alongside a fire detector. Is any one aware of specific guidance on this matter? Is any one aware of combination detectors for such situations?
Regards,
Lyle Dunn
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Kidde 0122UK Dual Smoke and Carbon Monoxide Alarm.
I was researching this yesterday for a friend and came across this.
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Ummmmmm I think you mean CO
CO2 is carbon dioxide. Both are produced by combustion CO is toxic CO2 will cause you to asphyxiate in high enough concentrations.
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Sam,
Indeed I do mean CO. I make the same mistake all the time! Thank you for the correction.
Nearlythere; CO and fire combination; I e-mailed Kidde for info. They say they do not make such a device
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Sam,
Indeed I do mean CO. I make the same mistake all the time! Thank you for the correction.
Nearlythere; CO and fire combination; I e-mailed Kidde for info. They say they do not make such a device
Maybe you mistakenly asked them for combined Co2 and Smoke Lyle rathed than Co & Smoke.
This is in ebay:-
http://www.ebay.co.uk/itm/Kidde-0122UK-Dual-Smoke-and-Carbon-Monoxide-Alarm-/251095650490?pt=UK_Safety_Alarms&hash=item3a767790ba
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I don't think that the KIDDE device meets UK standards for domestic installations but I'm not sure.
I was in Edwards and Edwards last month when a guy came in looking the same thing and no joy,They even phoned Michael up at Raymacc and had no joy from KIDDE in the UK.
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Looked at a range of KIDDE domestic detectors on a website and saw that the combined unit does not have a kitemark reference like the standard units. It does have the CE mark though.
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The device is sold by Kidde Safety Europe & is on their website, but the data sheet & instruction book links are dead.
It uses voice alarms and different tones for fire and CO, with a two stage warning for CO.
It's actually a Kidde US model that has been put through CE to allow sale in Europe.
US datasheet: http://www.kidde.com/utcfs/ws-384/Assets/900-0102%20sheet.pdf
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Hi Lyle
It depends on what you want the detector to do. Is it for gas safety - i.e; to detect CO from gas appliances?
If so the detectors that Nearlythere are talking about are likely to be CO fire detectors rather than CO (gas safety) detectors
I personally have never come across a gas Safety CO detector linked in with a fire alarm system.