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Waterflow Circuits Operation
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: OBSERVE PROPER PRECAUTIONS
!
WHEN USED FOR CO
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.
4.10 Time Functions: Real-Time Clock
The FACP includes a crystal-based clock that provides time, date and day of week. Time is dis-
played 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 repro-
grammed.
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 (refer to Cross-Zone for Release Circuit 1 or Release Circuit 2: on page 61)
•
Synchronized output for System Sensor, Wheelock, Gentex, Faraday or Amseco - Refer to
"Synchronized NAC Operation" on page 62 for additional information.
4.12 Release Stage/NAC Operation
Outputs programmed as Release Stage NACs indicate the stages of a release operation. There are
three possible release stage methods:
MRP-2002 Series Instruction Manual — P/N 53049:E5 7/28/2016
RELEASING APPLICATIONS, OBSERVE PROPER PRECAUTIONS AS
2
Operating Instructions
85
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