Specifications

XR2500F Fire Detection Specification 7
4.10 Zone Configuration
A. The system shall have the capacity for a maximum of fifteen (15) Remote Annunciators and a minimum of
125 four (4) zone expanders or 500 single zone expanders. It shall also have the capacity of a maximum
of 125 supervised relay output expanders. All Class B zones shall be 2-wire, 18 AWG minimum,
supervised by an end-of-line (EOL) device and shall be able to detect open and short conditions in excess
of 500ms duration.
B. The system shall be capable of monitoring a minimum of 562 individual initiating zones. 562 of these
zones shall be capable of Class B operation.
C. The system shall have the capacity of 100 Class B addressable reporting initiating zones on each of five
(5) digital Signaling Line Circuits (SLC). All Class B zones shall be two-wire, 18 AWG minimum, supervised
by an end-of-line (EOL) device and shall be able to detect open, short, and ground fault conditions in
excess of 200ms duration.
D. The system shall have a minimum of two (2) Class B initiating zones available from the FACP for support
of compatible two-wire smoke detectors.
E. A minimum of four (4) Class B addressable reporting initiating zones shall be available for each address
on the digital annunciator bus.
F. The system shall have a minimum of four (4) zones available from the FACP, which allows for the
connection of Model 869 Style D Initiating Modules, providing Class A Style D four-wire initiating zones for
the monitoring of waterflow devices. These zones shall be capable of monitoring for open circuits, short
circuits, and ground fault conditions.
G. The digital SLC loop and the annunciator/keypad bus shall be able to operate at a maximum wiring
distance of 2500 feet from the FACP on unshielded, non-twisted cable. This distance may be extended to
a total of 15,000 feet when bus repeater modules are installed.
H. Zones on the digital SLC shall support the CleanMe™ feature in Sentrol® smoke detectors that causes the
smoke detector to send a message to the FACP when detection capability has deviated from the UL
sensitivity range or has failed its internal diagnostic test.
I. Each zone shall function in any of the following configurations:
• Night
• Day
• Exit
• Fire
• Supervisory
• Emergency
• Panic
• Auxiliary 1
• Auxiliary 2
• Fire Verification
• Cross-Zone
• Priority
• Arming
4.11 Output Configuration
A. The system shall have the capacity of a maximum of 502 auxiliary relays (Form C rated for 1 Amp at 30
VDC) and up to a maximum of 574 switched ground (open collector) outputs (50mA maximum).
B. All relay and switched ground outputs shall be capable of being independently programmed to turn on
and off for selected events and at selected times.
C. The system shall be capable of supporting 562 open collector annunciator outputs that follow that state
of each zone for use with a graphic annunciator. Each annunciator output shall switch 50mA of current.
4.12 NAC Circuit Configuration
A. Notification Appliance Circuit (NAC) supervision shall be provided by two (2) Class B Style W NAC outputs
that monitor for short circuits, open circuits, and ground faults. The NAC circuits shall include a dry
output relay for external NAC trouble conditions and a manual bell silence switch.
B. The system shall be capable of additional Class B NAC circuits utilizing the Model 867 Notification
Modules. Each module shall be controlled and supervised via the SLC loop and monitor for short circuits,
open circuits, and ground faults. The NAC circuits shall include a dry output relay for external NAC
trouble conditions and a manual bell silence switch.
C. The system shall be capable of providing Class A NAC circuits utilizing the Model 865 Notification
Modules. Each module shall monitor for short circuits, open circuits, and ground faults. The NAC circuits
shall include a dry output relay for external NAC trouble conditions and a manual bell silence switch.