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Operating Instructions
4.7 Disable/Enable Operation
Input zones which are disabled do not cause an alarm or any zone activation. Disabled NACs are
held in the off state. Disabled zones/NACs are treated as if they were in trouble, with the exception
being the LCD status label that will be displayed is DISABL.
Note that disabled Releasing Circuits are treated as supervisory events.
4.8 Waterflow Circuits Operation
If an alarm exists from a zone that is a waterflow non-silenceable type, the Alarm Silence key will
not function.
4.9 Detector Functions
Maintenance Alert
i
smoke detectors will be polled for maintenance and freeze conditions (temperature less than
3
o
45
F) on initial entry into Normal mode. Thereafter, each device will be polled every hour for
freeze and every four hours for maintenance conditions All alarm and system trouble conditions
are annunciated on the control panel's LCD.
Note: To ensure that the system is functioning properly, the FACP will perform a freeze check five
minutes after the panel is reset, followed by a maintenance check. If there is no freeze or
maintenance condition, the panel will continue to monitor for freeze conditions every hour and
maintenance conditions every four hours.
WARNING! When used for CO
!
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.
4.10 Time Functions: Real-Time Clock
The FACP includes a crystal-based clock that provides time, date and day of week. Time is
displayed as 12 or 24 hour time with month/day/year and is stored in RAM. Daylight savings time
change-over is programmable and automatic. If both AC and battery are lost, time must be
reprogrammed.
4.11 Coded NAC Operation
The NAC circuits resident on the control panel main circuit board can be programmed for coded
operation. The available options which can be programmed for coded operation are as follows:
•
Steady - Steady output with no pulsing
•
March Time - Pulses at 120 ppm (pulses per minute)
•
California Code - 10 seconds On, 5 seconds Off
•
Temporal Code - Pulses at ½ second On, ½ second Off, ½ second On, ½ second Off, ½
second On, 1½ second Off
•
Two-Stage - Pulses at 20 ppm (pulses per minute) for 3 or 5 minutes and then changes to
Temporal
•
Cross-Zone:
•
Synchronized output for System Sensor, Wheelock, Gentex, Faraday or Amseco - Refer to
"Synchronized NAC Operation" on page 62 for additional information.
90
releasing applications, observe proper precautions as stated in
2
1st zone of a cross-zoned group in alarm causes programmed NAC output to pulse 1
second on and 1 second off
2nd zone of a cross-zoned group in alarm causes programmed NAC output to pulse ½
second on and ½ second off - Note: if more than three zones are cross-zoned, the
programmed NAC output will continue to pulse ½ second on and ½ second off for each
subsequent zone in alarm, until the final zone in the cross-zoned group goes into alarm
all zones of a cross-zoned group in alarm causes the output programmed as a Releasing
Circuit to perform an agent release and the programmed NAC output to turn on steady
Disable/Enable Operation
MRP-2002 & MRP-2002E PN 53049:A1 5/01/2008
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