MrHappy Posted January 7, 2017 Share Posted January 7, 2017 Only a proper fire alarm or interlinked smokes met with building regs, If you want smokes on intruder alarm I buy Texecom ones however I have used S65 with the relay base in the past Quote Mr Veritas God Link to comment Share on other sites More sharing options...
andy™ Posted January 7, 2017 Share Posted January 7, 2017 (edited) 7 minutes ago, MrHappy said: Only a proper fire alarm or interlinked smokes met with building regs, smoke detectors connected to an intruder alarm does comply with grade C of 5839 (unless im reading it wrong). mains interlinked smoke detectors are grade D Quote Grade c: A system of fire detectors and alarm sounders (which may be combined in the form of smoke alarms) connected to a common power supply, compromising the normal mains and a standby supply, with central control equipment but one major issue is backup time, needs to be 72 hours so you will need an extra few batteries from 5839-6:2013 Quote NOTE For intruder alarm systems, BS EN 50131-1 recommends a standby capacity of less than 72 h. Modifications to an intruder alarm system are, therefore, likely to be necessary if it is to incorporate a fire detection and alarm facility complying with the recommendations of this standard for a Grade C system. Edited January 7, 2017 by andy™ Quote Link to comment Share on other sites More sharing options...
Shaunb1905 Posted January 7, 2017 Share Posted January 7, 2017 Must be mental using twinflex!! 1 Quote Link to comment Share on other sites More sharing options...
datadiffusion Posted January 7, 2017 Share Posted January 7, 2017 (edited) 7 minutes ago, andy™ said: smoke detectors connected to an intruder alarm does comply with grade C of 5839 (unless im reading it wrong). mains interlinked smoke detectors are grade D but one major issue is backup time, needs to be 72 hours so you will need an extra few batteries from 5839-6:2013 Indeed but in a similar manner to UK exemptions for intruder standby time, when it was a new build / refurb / loft extension prompted job we told BC that any low batteries would be notified by the alarm panel in plain English and that a maint contract existed for at least the first 12 months they were happy to sign off... and noted as a variation. 3 minutes ago, Shaunb1905 said: Must be mental using twinflex!! Whilst I've only used them about 3 times, I think Fike are excellent, guessing you've had issues? Edited January 7, 2017 by datadiffusion Quote So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment Share on other sites More sharing options...
MrHappy Posted January 7, 2017 Share Posted January 7, 2017 28 minutes ago, andy™ said: smoke detectors connected to an intruder alarm does comply with grade C of 5839 (unless im reading it wrong). mains interlinked smoke detectors are grade D A proper fire alarm has fire fire resistant cabling Mains interlinked has a battery in each device, An intruder alarm has combustible cable & a sounder separate from the sensor, I think its bad idea to use an intruder alarm for life safety Quote Mr Veritas God Link to comment Share on other sites More sharing options...
andy™ Posted January 7, 2017 Share Posted January 7, 2017 (edited) not according to 5839-6 Quote 16.1 Commentary A fire detection and fire alarm system in which components are interconnected will not fulfil its functions unless these interconnections operate correctly. In most systems, the interconnections take the form of wiring, but other means, such as radio signals, may be used. Recommendations for radio-linked systems are given in Clause 21. In most single-family dwellings, any interconnections between components are not required to function for prolonged periods during a fire. Accordingly, the use of fire-resisting cables might not be necessary. However, wiring needs to be protected from exposure to mechanical damage, particularly if the wiring is unmonitored. 16.4 Recommendations for wiring in Grade C systems The following recommendations are applicable. a) The electrical characteristics of the cables used in Grade C systems should be in accordance with the relevant recommendations of BS 7671. The cables should be suitable for the current and voltage of the circuits concerned. makes no mention of fire resistant cable. for grade A & B it does state fire resistant cable required then there is also this Quote Grade C systems can incorporate even simpler CIE, providing a source of power for either a number of smoke alarms (and, possibly, heat alarms) or a number of fire detectors, with a very basic form of control and indication. Such equipment can comprise, for example, equipment specifically intended to provide a central source of power and control for interconnected smoke alarms, or can, for example, comprise the CIE of an intruder alarm system or social alarm system, to which a number of fire detectors and fire alarm devices are connected. Facilities provided by the CIE in a Grade C system may also include some facilities that are, more typically, provided in the CIE of Grade A and Grade B systems, which will satisfy all recommendations in respect of CIE for Grade C systems. like it or not, thats what the regs say personally, i almost always fit grade D using Aico detectors Edited January 7, 2017 by andy™ Quote Link to comment Share on other sites More sharing options...
Litch90 Posted January 7, 2017 Author Share Posted January 7, 2017 3 hours ago, MrHappy said: A proper fire alarm has fire fire resistant cabling Mains interlinked has a battery in each device, An intruder alarm has combustible cable & a sounder separate from the sensor, I think its bad idea to use an intruder alarm for life safety So just stick with a standard battery powered device?? Quote Link to comment Share on other sites More sharing options...
Litch90 Posted January 7, 2017 Author Share Posted January 7, 2017 3 hours ago, MrHappy said: A proper fire alarm has fire fire resistant cabling Mains interlinked has a battery in each device, An intruder alarm has combustible cable & a sounder separate from the sensor, I think its bad idea to use an intruder alarm for life safety If i got hold of some FP200 what would you say the best way to install a device would be? From a mains perspective... Quote Link to comment Share on other sites More sharing options...
sixwheeledbeast Posted January 7, 2017 Share Posted January 7, 2017 We didn't know what the property was from the OP. Yes, I have serviced many a fire alarm in domestic properties, however all have been detached properties of various sizes. Mr. H hits the nail on the head as usual, should really be mains interlinked. Mains interlinked would be installed with 3C&E mains cable. Would use Alarmsense over Twinflex, DD. Quote Link to comment Share on other sites More sharing options...
Litch90 Posted January 7, 2017 Author Share Posted January 7, 2017 1 minute ago, sixwheeledbeast said: We didn't know what the property was from the OP. Yes, I have serviced many a fire alarm in domestic properties, however all have been detached properties of various sizes. Mr. H hits the nail on the head as usual, should really be mains interlinked. Mains interlinked would be installed with 3C&E mains cable. Ideally on a dedicated circuit and not a spur of another? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.