6.8.4 Combination Systems.
6.8.4.1* Fire alarm systems shall be permitted to share components, equipment, circuitry, and installation wiring with non?fire alarm systems.
6.8.4.2 Operation of non?fire system function(s) originating within a connected non?fire system shall not interfere with the required operation of the fire alarm system unless otherwise permitted by this Code.
6.8.4.3* Short circuits, open circuits, or grounds in this equipment or between this equipment and the fire alarm system wiring shall not interfere with the monitoring for integrity of the fire alarm system or prevent alarm, supervisory, or fire safety control signal transmissions.
6.8.4.4 All non?fire alarm components of a combination system shall be listed for fire alarm use unless removal, replacement, failure, or maintenance procedure on any non?fire alarm hardware, software, or circuits does not impair the required operation of the fire alarm system.
6.8.4.5* Speakers used as alarm notification appliances on fire alarm systems shall also be permitted to be used for non-emergency purposes, provided that condition (1) or (2) is met:
(1) The fire command center is constantly attended by trained personnel and selective paging is permitted by the authority having jurisdiction.
(2) All of the following conditions are met:
(a) The speakers and associated audio equipment are installed or located with
safeguards to resist tampering or misadjustment of those components essential for intended emergency notification.
(b) The monitoring integrity requirements of
4.4.7 and
6.9.8 shall continue to be met while the system is used for non-emergency purposes.
(c) It is permitted by the local authority having jurisdiction.
6.8.4.6 Speakers used as alarm notification appliances on fire alarm systems shall also be permitted to be used for mass notification systems.
6.8.4.7* In combination systems, fire alarm signals shall be distinctive, clearly recognizable, and, with the exception of mass notification inputs, take precedence over any other signal even when a non?fire alarm signal is initiated first and shall be indicated as follows in descending order of priority unless otherwise permitted by this Code:
(1) Signals associated with life safety
(2) Signals associated with property protection
(3) Trouble signals associated with life and/or property protection
(4) All other signals
6.8.4.8 If the authority having jurisdiction determines that the information being displayed or annunciated on a combination system is excessive and is causing confusion and delayed response to a fire emergency, the authority having jurisdiction shall be permitted to require that the display or annunciation of information for the fire alarm system be separate from, and have priority in accordance with
6.8.4.7, over information for the non?fire alarm systems.
6.8.4.9* Live voice instructions originating from the protected premises fire or mass notification systems shall override all previously initiated signals and shall have priority over both of the following:
(1) Any subsequent automatically initiated signals on that channel
(2) Remotely generated mass notification messages
