Fire-Lite MRP-2002C Agent Release Control Panel - Manual (Page 97)

MRP-2002 Series Instruction Manual — P/N 53049:E2 3/7/2013 97
Disable/Enable Operation Operating Instructions
• The output circuits programmed as SUPERVISORY NAC to activate
• The supervisory relay is activated
• The alarm relay is not activated
• Silenced alarms are resounded
• Timers are not started
• Store event in history buffer
A typical Supervisory event would be displayed as illustrated in the following:
In the preceding example:
 FROZEN SUPRV - indicates zone detector is below approximately 45 o F
Note that, like alarms, supervisory signals latch (except when programmed for supervisory autore-
settable) and can be assigned to software zones. Open circuits in supervisory wiring are processed
by the control panel the same way as other trouble conditions. Refer to “Alarm Operation” on
page 95, for a description of the information displayed on the control panel LCD.
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 3 smoke detectors will be polled for maintenance and freeze conditions (temperature less than
45 o 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.
FREEZE SUPERVISORY
ZONE 05 FROZEN SUPRV
10:00A 030806
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.