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Disable/Enable Operation
4.10 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. All disabled zones/NACs are treated as if they were in trouble, with the excep-
tion being the status label that will be displayed is DISABL.
4.11 Waterflow Circuits Operation
If an alarm exists from a zone that is a waterflow non-silenceable type, the Alarm Silence key will
not function.
4.12 Detector Functions
Maintenance Alert
i
smoke detectors will be polled for maintenance and freeze conditions on initial entry into Normal
3
mode. Thereafter, each device will be polled every hour for freeze and every four hours for mainte-
nance 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.
System Alarm Verification
The control panel may be programmed to perform alarm verification to help eliminate the nuisance
of false alarms. Alarm verification applies to smoke detectors only.
4.13 Time Functions: Real-Time Clock
The FACP includes a crystal-based clock that provides time of day, 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, the time must be
reprogrammed.
4.14 Coded Operation
The NAC circuits resident on the control panel main circuit board can be programmed for coded
operation. The available pulse rates which can be programmed for coded operation are as follows:
•
Continuous:
•
March Time:
•
Temporal Code:
•
California Code:
•
Two-Stage:
MS-5UD & MS-10UD Series Manual — P/N 52626:C2 1/24/2012
Steady output with no pulsing
Pulses at 120 ppm (pulses per minute)
Pulses at ½ second On, ½ second Off, ½ second On, ½
second Off, ½ second On, 1½ second Off
10 seconds On, 5 seconds Off
Pulses at 20 ppm (pulses per minute) for 3 or 5 minutes
and then changes to Temporal
Operating Instructions
117
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