Fire-Lite MS 424 Fire Alarm Control Panel

firealarmresources comT Device Connection Typical 3 Supervised Class B Operation Detection loop specifications Class B standby 23VDC current 15mA circuit current 35mA current 5mA resistor 4.7k 5 loop resistance 200 ohms detector current 2.0mA Zone Smoke and ionization detectors requiring separate 24VDC can be powered from MCB 104 terminals 12 13 Use relay SDLR B to supervise power circuit wiring Detector loop current is sufficient to ensure operation of one detector per zone Compatible U L listed 2 wire detectors available from Fire Lite Initiating devices include Manual stations heat detectors smoke detectors ionization detectors waterflow alarm devices manual stations Use mechanical water motor gong if waterflow alarm devices are connected to the zone Inhibit latching circuit by removing diode marked with a from DZC 2 card if coded manual stations are connected Compatible U L listed 2 wire detector available from Fire Lite include the following series CP101 CP204 CP311 CP751 SD12T and SD32T Bell Circuit 5 Modes of operation For non disconnectable bells remove jumper J3 but leave jumper J2 For disconnectable bells remove jumper J2 but leave jumper J3 For MTC bell signal remove jumper J1 Select normally open or normally closed trouble contact by removing J4 or J5 respectively Trouble contact is provided Terminals 1 and 2 It is rated 2 amps 28 VDC a Connect signalling circuit as shown Size wire for a maximum voltage drop of 2 VDC Use polarized U L listed signalling devices with a minimum rated voltage range of 18 to 30 VDC For bell power connect terminal 7 positive input CKT A terminal 8 positive input CKT B of BCM 2 to terminal 10 of MCB 104 respectively Maximum bell load is 1.1 amps per CKT current load on regulator add last column current should not exceed 0.75 amp unfiltered unregulated bell power 2.2 amps total Remove both jumpers in DZC 2 card s if optional module s employed 2 Standby Battery Requirements Remove both jumpers in DZC 2 card s if optional module s employed 3 Calculate Ampere Hour 4 Battery Selection not use 24VDC regulated supply for inductive loads NFPA 72A 72D 74 required 24 hours standby NFPA 72B and 72C required 60 hours standby battery from Part 4 with amp hour rating larger than line 7 of part 3