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Installation ANN-BUS Devices
34 MRP-2001 & MRP-2001E PN 53040:A 4/16/2007
2.7.3 ANN-80 Remote LCD Annunciator
The ANN-80 LCD Annunciator is a compact, 80 character, backlit LCD remote fire annunciator
which mimics the FACP display. It also provides system status indicators for AC Power, Alarm,
Trouble, Supervisory and Alarm Silenced conditions. Communication between the ANN-80 and
FACP is accomplished over a two wire serial interface employing the ANN-BUS communication
format. The devices are powered, via two additional wires, from either the host FACP or remote
UL-listed, filtered, power supply.
2.7.4 Specifications
• Operating Voltage Range: 18 VDC to 28 VDC
• Current Consumption @ 24 VDC nominal (filtered and nonresettable):
Normal/Standby (no activity): 37.0 mA
Trouble: 39.0 mA
Alarm: 40.0 mA
AC Fail (not backlit): 15.0 mA
• For use indoors in a dry location
2.7.5 Installation
Ensure that all power (AC and DC) has been removed from the FACP before installing the
annunciator.
2.7.5.1 Mounting
The ANN-80 can be surface or semi-flush mounted to a single, double or 4” square electrical
box. Select and remove the appropriate knockout(s), pull the necessary wires through the
knockouts and mount the annunciator in or on the wall depending on the type of installation
desired.
The ANN-80 cover must be attached to the annunciator backplate before mounting the
annunciator to the electrical box/wall. The cover cannot be reattached or removed after the
annunciator has been mounted.
2.7.5.2 Opening/Closing Annunciator
The following procedure details the steps used to open the annunciator in order to access the
terminal block and DIP switches (refer to figure below):
1. Turn the key switch to the ON (Unlocked) position by turning the key counter-clockwise
2. Push in the snap latch located on the right side of the unit while pulling the cover open
3. To close the cover, make certain the key switch is in the ON (Unlocked) position. Swing the
cover closed, snapping it shut
4. Turn the key switch to the OFF (Locked) position by turning clockwise and remove the key
Key switch shown in ON position
Press in latch and pull
annunciator cover open
Annunciator cover with LCD display
Annunciator backplate