Notifier NFS-640 Operation Manual page 58

Appendix A: Special Zone Operation
Listing of each Cross Zone option and the conditions required to activate the Releasing Zone, according
to the example shown in Figure 43.
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Cross Zone
Condition(s) Required to Activate the Releasing zone
Selection (Cross=)
Cross=N An alarm from any detector activates the releasing circuit.
Cross=Y An alarm from any two detectors activates the releasing circuit.
Cross=Z An alarm from two detectors mapped to different Software Zones,
but mapped to the same Releasing Zone.
• An alarm from 2D101 and 2D103 – detectors mapped to different
zones, but both list ZR1 in their CBE.
• An alarm from 2D102 and 2D104 – detectors mapped to different
zones, but both list ZR1 in their CBE.
• An alarm from 2D101 and 2D104 – detectors mapped to different
zones, but both list ZR1 in their CBE.
• An alarm from 2D102 and 2D103 – detectors mapped to different
zones, but both list ZR1 in their CBE.
Cross=H Activation of heat detector 2D104 and one smoke detector (2D101,
2D102, or 2D103).
Table 15 Example of Cross Zone Selections
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Releasing Zones (R0-R9)
NFS-640 Operations Manual P/N 51334:B 10/03/2003