Positive Alarm Sequence, Fire alarm systems

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Good afternoon! I have (2) questions that I was hoping I could get some input on..

1. Does the NFPA 72 allow an alarm verification window of (60) seconds to be included in the total (180) seconds of a positive alarm sequence?

2. Is there any exception that would allow a system to not enter into public mode when (2) devices were activated? An example would be a single detector in alarm then a manual pull station pulled..

Maybe this is the wrong section to place these questions in?

Thank you in advance!!:happysad:
 
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