The FireLite MS-2 and MS-2E Fire Alarm Control Panels (FACPs) bring the latest in microprocessor technology to conventional fire controls. The MS-2 is compatible with the i³™ smoke detectors from System Sensor with drift compensation, maintenance alert, and freeze warning. Automatic synchronization of audio/visual devices with three selections for manufacturer protocol. The Notification Appliance Circuit (NAC) protocol can silence audible devices while strobes continue to flash, using a single pair of wires.

The MS-2 is compatible with conventional input devices such as two- and four-wire smoke detectors; pull stations, waterflow devices, tamper switches and other normally open contact devices. Refer to the Fire•Lite Device

Features:

• Two Style B (Class B) Initiating Device Circuits (IDCs).
• One Style Y (Class B) NAC.
• 24 VDC.

i³™ Technology features:

• Drift compensation automatically adjusts detector sensitivity and increases resistance to false alarms caused by dust accumulation.
• Maintenance Alert LEDs (per zone) warn of excessive dirt accumulation, preventing false alarms (meets NFPA 72 requirements).
• Detector sensitivity is automatically measured by the detector, which automatically adjusts its sensitivity back to the factory settings when it becomes more sensitive due to contaminants settling in the chamber.

• Wireless handheld sensitivity meter eliminates the need for voltmeters, magnets, and a physical connection to the detector. The reader displays sensitivity in terms of percent per foot obscuration and provides text status indication.
• Supervisory LED (per zone) provides warning if a detector senses temperature approaching freezing.
• Special test protocol and LED indication allows quick test of all detectors without need for a ladder.

NAC synchronization features:

• Synchronization of standard ANSI audible signals as required by NFPA 72.
• Synchronization of ADA compliant strobes per NFPA 72.
• Selectable for System Sensor, Wheelock, and Gentex protocols.

• Selective Silence for manual silence of horns while strobes continue to flash on the same NAC.
• Alarm verification selectable for each zone.
• Disable switches provided per zone.

NAC programmable for:

• Silence Inhibit
• Auto Silence
• Strobe Synchronization
• Selective Silence (horn-strobe mute)
• Temporal or Steady signal
• Silenceable or Nonsilenceable
• Silent or audible Walk Test operation mode commanded from the front keypad, with automatic return-to-normal after one hour of inactivity.

• Each zone may be programmed for supervisory or fire; each zone has separate red and yellow LEDs.
• Disable switches provided for each zone.
• Form-C Alarm and Trouble relays.
• 3.0 amps total usable current.
• Piezo sounder for alarm, trouble, supervisory and maintenance.

Control buttons:

• ACK (Acknowledge)
• Alarm Silence
• Reset
• Walk Test
• Zone Enable/Disable (one per zone)

LED indicators:

• Fire Alarm (one per zone)
• Supervisory (one per zone)
• Trouble (one per zone)
• Maintenance (one per zone)
• AC Power

• NAC Disable
• Zone Disable
• NAC Fault
• System Trouble

Specifications

AC POWER — TB8

• MS-2: 120 VAC, 50/60 Hz, 2.3 A.
• MS-2E: 240 VAC, 50 Hz, 1.15 A.
• Wire Size: Minimum 14 AWG (2.0 mm) with 600 V insulation.

Battery (Sealed Lead-Acid Only) — J8

• Maximum charging circuit: normal flat charge 27.6 VCD @ 0.8 A.
• Maximum battery charger capacity: 18.0 AH battery (two 7.0 AH batteries can be housed in the FACP cabinet. Larger batteries require a separate battery box such as the Fire•Lite BB-17F).

Initiating Device Circuit — TB3

• Alarm zones 1 & 2.
• Power-limited circuitry.
• Operation: all zones Style B (Class B).
• Normal operating voltage: nominal 20 VDC.
• Alarm current: 15 mA minimum.
• Short-circuit current: 40 mA maximum.
• Maximum loop resistance: 100 ohms.
• End-of-line resistor: 4.7K ohm, watt (P/N 71252).
• Standby current: 4 mA.
• Compatible devices: refer to the FireLite Device Compatibility
• Document no. 15384 for a complete list of compatible devices

NOTIFICATION APPLIANCE CIRCUIT — TB2

• One NAC.
• Power-limited circuitry.
• Normal operating voltage: nominal 24 VDC.
• Maximum signalling current: 2.5 A total with standard transformer.
• End-of-line resistor: 4.7K ohm, watt (P/N 71252).
• Compatible devices: refer to the Fire•Lite Device Compatibility
• Document no. 15384 for a complete list of compatible devices

Form C-Relays

• Trouble Relay TB5 (fail-safe).
• Alarm Relay TB6.
• Relay contact ratings: 2.0 A @ 30 VAC (resistive).

Auxiliary Output Resettable Power — TB1

• Operating voltage: nominal 24 VDC.
• Maximum available current: 500 ma — appropriate for powering
• Four-wire smoke detectors
• Power-limited circuitry.

Cabinet Dimensions

• Door: 15.342" (38.97 cm) high x 14.667" (37.28 cm) wide x 0.375" (0.95 cm) deep.
• Backbox: 15.0" (38.10 cm) high x 14.5" (36.83 cm) wide x 3.0" (7.62 cm) deep.

Backbox Mounting

• The cabinet can be surface mounted. The door is removable
• during installation by opening and lifting it off the hinges. The
• cabinet mounts using two key slots at the top of the backbox and
• two additional 0.25" diameter holes at the bottom.

Listings and Approvals

• UL Listed: S624.
• MEA: 297-01-E.
• CSFM: 7165-0075:200.