The fire chief does not want any delay in or out during a fire period.The problem is that all mag lock doors must have a pull station that immediately releases it.The rational is that in a fire the occupants will pull the station on the way out and release the door before they get to it.This is redundant to the fire relays
If it's not hardwired at that door the system can take up to 15 seconds to release the lock and they will go back into the building looking for another exit.This is a real problem if they are the first to find the fire.I dont think any delay is intend it just take that long for thr system and locks to release in large buildings
The problem with wiring into the crash bar is that over time the wire can and will become fatigued from opening and closing the door where a mag wont.
Mag locks are used in Hospitals,jails,schools and anywhere we want to control public access,use swipe cards or allow only certain individuals access.
Another option is electric strikers but they also ware out quickly on doors that get operated hundreds of times a day and in high security we can have that either.
Thats the code around here anyway
cheers

Last edited by frank; 03/11/10 01:14 AM.