2.27.11.5 Fire Alarm System Interface

(a) An active automatic fire alarm initiating device as specified by NFPA 72 that does not initiate Phase I Emergency Recall Operation in this group shall cause the fire alarm system to provide signal(s) to the elevator system in conformance with NFPA 72.

(b) The floors to be evacuated shall be a contiguous block of floors, designated as the "elevator evacuation zone," and shall consist of at least the floor with an active alarm, two floors above it, and two floors below it.

(c) When the discharge level falls within the contiguous block, it shall be included in the contiguous block of floors but shall not be evacuated by the elevator(s).

(d) If the active alarm is on the elevator discharge level for this group, automatic initiation of 0E0 in accordance with 2.27.11.6 shall not be permitted.

(e) If activation of an additional automatic fire alarm initiating device that does not initiate Phase I Emergency Recall Operation in this group occurs on an additional floor(s) including the discharge level at any time while OEO in accordance with 2.27.11.6 is in effect, the elevator evacuation zone shall be expanded.

(f) The expanded evacuation zone shall include all floors with an active alarm, all floors between the highest and lowest floors with an active alarm plus two floors above the highest floor with an active alarm and two floors below the lowest floor with an active alarm.

(g) Manual initiation of OEO by authorized or emergency personnel in conformance with NFPA 72 shall be permitted.

(h) The elevator group or any single elevator not in a group shall indicate to the fire alarm system the status of its availability for OEO.

(i) The elevator group or any single elevator not in a group shall indicate to the fire alarm system when OEO is active.

NOTES (2.27.11.5.1):

1. An "active alarm" refers to the condition caused by the "activation of an automatic fire alarm initiating device" that does not initiate Phase I Emergency Recall Operation in this group or any single elevator not in a group as used in this requirement.
2. Coordination between the fire alarm system installer and the elevator system installer is required, for example, when a group of elevators do not service all the same floors.

NOTE (2.27.11.5.2): See NFPA 72 and the applicable building code for the location of the activation means for elevator total building evacuation.