System Sensor 2424 and 2424TH Install and Maint Instructions

INSTALLATION AND MAINTENANCE INSTRUCTIONS 2412TH 2424 and 2424TH Wire Photoelectronic Detectors SENSOR Division of Pittway 3825 Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 Temperature Range Humidity Range Air Velocity Alarm Ratings Voltage Voltage Voltage Current Currents inches 14 cm inches 81 mm Add 0.5 inches 1.3 cm for thermal units lb 310 g and 2424 0 cid 176 to 49 cid 176 C 32 cid 176 to 120 cid 176 F and 2424TH 0 cid 176 to 38 cid 176 C 32 cid 176 to 100 cid 176 F to 93 Relative Humidity Ft Min 15 M S by momentary power interruption 4V Maximum Ripple Minimum Maximum Minimum A Maximum Minimum Maximum alarm and auxiliary relay operate within the specified voltage ratings Time Relay Time Contacts resistive or inductive 60 power factor load A C 30VAC DC 110VDC 2.0A 30VDC 125VAC 2.0A 30VAC Canadian installations relay contact rating is 2.0A 30VAC DC Maximum Installing thoroughly read the System Sensor manual I56 407 Guide for Proper Use of System Smoke Detectors which detailed information on detector spacing place zoning wiring and special applications Copies of manual are available at no charge from System Sensor installation in Canada refer to CAN ULC S524 Stan for the Installation of Fire Alarm Systems and CEC 1 Sec 32 Description Sensor 2412 and 2424 photoelectronic smoke detec utilize state of the art optical sensing chambers These are designed to provide open area protection and to used with compatible UL listed 4 wire control panels only 2412 applies to 12 volt panels and operates at 12VDC the 2424 applies to 24 volt panels and operates at Operation and sensitivity can be tested in place 2412TH and 2424TH have the same specifications as 2412 and 2424 but in addition feature a built in fixed 135 cid 176 F thermal detection unit LED on each detector lights to provide a local alarm indi It flashes every ten seconds indicating that power is to the detector The LED lights continuously in alarm detectors also have the latching alarm feature that re only by a momentary power interruption Supervision of detector power detector contains one set of Form A contacts for connec to the alarm initiating circuit and one set of Form C aux by installing a Power Supervisory End of Line Module A77 716 Series at the end of the detector loop When power is applied to and through the detec the EOL Power Supervisory Module is energized Its re contacts close and provide a closed series circuit in the panel alarm initiating loop A power failure or a in the detector power loop de energizes the EOL Mod The relay contacts open and trigger a trouble signal at the panel Manuals Online 1 Flush mounting of 2412 2424 smoke on 3 1 2 inch and 4 inch octagonal box 2 2412 2424 smoke detector mounting 2412 and 2424 detector is supplied with a mounting kit that permits the detector to be mounted Directly to a 3 1 2 inch or 4 inch octagonal 1 1 2 inch electrical box see Figure 1 or To a 4 inch square electrical box by using a plaster ring the supplied mounting bracket kit Wiring Guidelines Refer to releasing device manufacturer installa instruction for proper connections wiring must be installed in compliance with the Na Electrical Code and all applicable local codes and special requirements of the authority having jurisdic using the proper wire size The conductors used to smoke detectors to control panels and accessory should be color coded to reduce the likelihood of errors Improper connections can prevent a system responding properly in the event of a fire signal wiring the wiring between interconnected de it is recommended that the wire be no smaller AWG 18 However the screws and clamping plate in base can accommodate wire sizes up to AWG 12 The of twisted pair wiring for the power and loop is to minimize the effects of electrical interfer detectors and alarm system control panels have for allowable loop resistance Consult the panel manufacturer specifications for the total resistance allowed for the particular model control being used before wiring the detector loops MAKE DETECTOR TAMPER RESISTANT OFF TAB EXTENSION SCRIBED LINE For system supervision for terminals 1 2 7 and do not use looped wire under terminals Break run to provide system supervision of connec Contacts are shown in stand by mode and will in alarm condition connections are made by stripping about 3 8 inch of from the end of the wire sliding the bare end of wire under the clamping plate and tightening the plate screw Feature detector includes a tamper resistant feature that pre removal of the detector without the use of a tool To the detector tamper resistant break off the smaller at the scribed line on the Tamper Resistant Tab on the mounting bracket see Figure 2 then install the To remove the detector from the bracket once it been made tamper resistant use a small screwdriver to the tamper resistant tab located in the slot on the bracket and turn the detector counterclockwise removal power from initiating device circuits before install detectors Wire detector per installation guidelines 3 Wiring diagram for 2412 2424 series smoke detector used with 4 wire control panel 1 C A LISTED 1 8 5 1 8 5 Manuals Online A OPTIONAL WIRING I Line up arrows on the detector with arrows on the Turn the detector clockwise until the detector clicks into After all detectors have been installed apply power to bracket control unit Test the detector as described under TESTING Reset the detector at the System Control Panel Notify the proper authorities the system is in operation covers provide limited protection against airborne particles during shipping Dust covers MUST be re before the smoke detectors can sense smoke Re sensors before beginning heavy remodeling or testing notify the proper authorities that the smoke system is undergoing maintenance and therefore system will temporarily be out of service Disable the or system undergoing maintenance to prevent un alarms testing the detector look for the presence of the LED If it does not flash power has been lost to the check the wiring or it is defective return for re must be tested after installation and following maintenance The 2412 and 2424 may be tested as Recessed Test Switch A test switch is located on the detector housing see 4 Push and hold the recessed test switch with a 0.1 inch diameter tool The detector LED should light within 5 seconds Calibrated Test Card Model R59 18 00 Remove the detector cover by placing a small bladed in the side slot of the detector cover slightly until the cover can be turned coun for removal Insert the NO ALARM end of the test card fully into test slot see Figure 5 then slide it counterclock until it stops The detector should not alarm after 20 seconds Remove the test card by sliding it clockwise before re then insert the ALARM end The LED should latch on within 20 seconds indicat alarm and annunciating the panel Put the cover back