There is nothing I am aware of that requires a district to keep a detailed floorplan, but certainly in order to properly maintain your systems, you need to know where they are.  Personnel do change over time, so you would want to leave a detailed record of where those systems and alarms exist and, quite frankly, in the worst case scenario, where there was an issue with carbon monoxide in your facility, you would want to be able to demonstrate that you put alarms in appropriate places to comply with the new state requirement.  So I think it is critical to maintain those detailed records.   I don’t think there is anything that specifically states that this is a requirement.

~ Carl Thurnau, P.E., NYSED's Office of Facilities Planning Coordinator, January 20, 2016