PatrickS
Member
Morning all, post inspired by this article http://idighardware.com/2010/12/nfpa-72-on-access-control-2/ which linked back to this forum in the comments.
Let's say I have a ten story building with an access control system wired to stairwell exits which have crashbars and a power supply above the door. I cannot find where it would be mandatory to provide fire alarm relays directly connected to these power supplies vs. providing the access control system a single relay to give an unlock signal from the fire command room. All I can see is required is to provide two relays, one for general alarm (or one per floor if doing floor above/floor below) and one for keyswitch operation from the the fire command room to give the access control system the signal.
All help/insights greatly appreciated!
Let's say I have a ten story building with an access control system wired to stairwell exits which have crashbars and a power supply above the door. I cannot find where it would be mandatory to provide fire alarm relays directly connected to these power supplies vs. providing the access control system a single relay to give an unlock signal from the fire command room. All I can see is required is to provide two relays, one for general alarm (or one per floor if doing floor above/floor below) and one for keyswitch operation from the the fire command room to give the access control system the signal.
All help/insights greatly appreciated!