Appendix A: Special Zone Operation
Releasing Zones (R0-R9)
56
NFS-640 Operations Manual P/N 51334:B 10/03/2003
Releasing Zones (R0-R9)
Purpose of Releasing Zones
The control panel provides ten Releasing Zones (R0-R9). These are special zones that you can use for
up to ten independent releasing operations. This section contains descriptions of each Releasing
Function option and an example of how Releasing Zone options work.
For instructions on programming Releasing Functions, refer to the
NFS-640 Programming Manual.
Each Releasing Zone includes the following releasing options:
Table 14 Releasing Options
How to View Releasing Zone Selections
You can use the Read Status Entry option to view the current selections for a Releasing Zone. For
example, to view selections for Releasing Zone R1, press the keys in sequence:
A sample LCD display of a Releasing Function selected for Releasing Zone R1:
Figure 42 Sample Read Status for a Releasing Zone
Option
Description
Cross Zone
Cross Zones let you program the control panel to activate a Releasing
Zone when two or more detectors are alarmed. Cross Zone selections
are:
Y
Two or more detectors are alarmed that are mapped to one of the ten
Releasing Zones (R0-R9)
Z
Two or more detectors are alarmed that are mapped to two different
Software Zones and mapped to one of the ten Releasing Zones (R0-R9).
H
At least one smoke detector mapped to one of the ten Releasing
Zones (R0-R9) is alarmed
and
at least one heat detector mapped to the
same Releasing Zone as the smoke detector is alarmed.
N
Cross Zones not used
Delay Timer
Select a 0–60 second delay before activating a zone.
Abort
An Abort Switch Type Code used to abort activation of a zone.
Manual Release
Allows immediate zone activation by overriding the abort function,
cross-zone function, and delay timer.
Soak Timer
Automatically shuts off the releasing device after a preprogrammed
period of time. Select 0001-9999 seconds for a Soak Timer or 0000
seconds for no Soak Timer.
WARNING
When used for CO
2
releasing applications, observe proper precautions as stated
in NFPA 12. Do not enter the protected space unless physical lockout and other
safety procedures are fully completed.
Do not use software disable functions in the panel as lockout.
!
Releasing Function status banner
Status (On or Off)
Releasing
Zone R1
Abort Function selection for the Releasing Zone
OFF RELEASE FUNCT
RELEASE CONTROL
DELAY=00 ABORT=ULI
CROSS=N SOK=0000 R01
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