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Fire Alarm Cut Off
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<blockquote data-quote="mike bogdanski" data-source="post: 92833" data-attributes="member: 4689"><p>Re: Fire Alarm Cut Off</p><p></p><p>Gentlemen...............As the OP stated,he needs to disable the venue audible...........is that correct ? We dont know if the OP was ordered by any AHJ to disable venue audible on alarm,was he asked by the venue to make this happen, or did he take this on by himself.THOSE are the questions we didn't get any answers to. My answer to this fix is :At each and every power amp input ,a 24 VOLT relay can be installed .(A 24 volt relay will be used ,because commercial fire systems operate on 24 volts ) .Picture like having a DI box at the back of each amp.This relay will open on alarm,disconnecting the hot leg so no signal passes.Each device will be mounted in such a way that removal of said device will trip the fire system into FIRE TROUBLE,so no tampering can occur.You do not have to shut down any amps ,no fooling with breakers or any 120 or 240 VAC . This relay will be wired thru a supervised output on the fire panel,thereby monitoring the connection integrity 24/7 .I am suggesting using these devices at the amps ,since the OP stated the board was meant to be removed.This also gets around the issue of attempting to use the board to mute audio for alarms , or if another board is substituted, you're still covered. To reset venue audible ,you reset the fire system. My other questions are :how much fire protection at this venue ? Are there horn/ strobes in place ? pull stations ? Is the venue have a sprinkler system? And there IS an EVAC system in place already ? And the install company that did the fire system do the EVAC also ,or another company? Was there an AHJ ever on premise before ? I FIND THIS INTERESTING............. if theres an EVAC system ALREADY in place,was the venue tested with the P.A. up and running with a sufficient level ,and do a fire drill ..........alarm system trips ,which in turn trips EVAC system ,to see what kind of an annunciation happens ? And DID IT PASS ? Did the AHJ state :" this aint gettin it , make the PA shut off"..... or what ? Now , Brad , does this address the topic at hand ? I hope so ....I just dont want to see the OP get into a situation that he cannot control , or even worse getting forced into this situation. I hope you all now understand where I'm coming from . Thanx .</p></blockquote><p></p>
[QUOTE="mike bogdanski, post: 92833, member: 4689"] Re: Fire Alarm Cut Off Gentlemen...............As the OP stated,he needs to disable the venue audible...........is that correct ? We dont know if the OP was ordered by any AHJ to disable venue audible on alarm,was he asked by the venue to make this happen, or did he take this on by himself.THOSE are the questions we didn't get any answers to. My answer to this fix is :At each and every power amp input ,a 24 VOLT relay can be installed .(A 24 volt relay will be used ,because commercial fire systems operate on 24 volts ) .Picture like having a DI box at the back of each amp.This relay will open on alarm,disconnecting the hot leg so no signal passes.Each device will be mounted in such a way that removal of said device will trip the fire system into FIRE TROUBLE,so no tampering can occur.You do not have to shut down any amps ,no fooling with breakers or any 120 or 240 VAC . This relay will be wired thru a supervised output on the fire panel,thereby monitoring the connection integrity 24/7 .I am suggesting using these devices at the amps ,since the OP stated the board was meant to be removed.This also gets around the issue of attempting to use the board to mute audio for alarms , or if another board is substituted, you're still covered. To reset venue audible ,you reset the fire system. My other questions are :how much fire protection at this venue ? Are there horn/ strobes in place ? pull stations ? Is the venue have a sprinkler system? And there IS an EVAC system in place already ? And the install company that did the fire system do the EVAC also ,or another company? Was there an AHJ ever on premise before ? I FIND THIS INTERESTING............. if theres an EVAC system ALREADY in place,was the venue tested with the P.A. up and running with a sufficient level ,and do a fire drill ..........alarm system trips ,which in turn trips EVAC system ,to see what kind of an annunciation happens ? And DID IT PASS ? Did the AHJ state :" this aint gettin it , make the PA shut off"..... or what ? Now , Brad , does this address the topic at hand ? I hope so ....I just dont want to see the OP get into a situation that he cannot control , or even worse getting forced into this situation. I hope you all now understand where I'm coming from . Thanx . [/QUOTE]
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