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7.7 Multiple Detector Operation
R
72
6.8.5.4.3 Multiple Detector Operation
shall be
permitted provided the following are met:
[1] The system is not prohibited by the Authority
Having Jursidiction.
[2] At least two automatic detectors are in each
protected space.
[3] The Alarm Verification feature is not used.
Notification and other output signal circuits may be configured to only activate when two or more automatic devices
within a detection zone enter an alarm condition.
At least two automatic devices shall be placed in the protected space. The spacing shall be as per NFPA 72 and
shall be no more than 0.7 times the linear spacing for public mode notification uses.
Note: Smoke detectors employed in multiple detector operation must not be configured for Alarm
Verification.
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