System Sensor L Series Installation And Maintenance Instruction

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1 I56-6649-0002/24/2020GENERAL DESCRIPTIONThe L-Series low frequency series of notification appliances offers a rangeof low frequency sounder and low frequency sounder/strobe products forwall and ceiling applications. Studies have shown that low frequency audibledevices that operate around 520Hz are more effective in waking individualsin sleeping areas. These products are electrically backward compatible withSpectrAlert Advance notification appliances. The 2-wire products fit systemswhere a single NAC controls both sounder and strobe. The System SensorMDL3A module may be used to provide synchronization.The models HGRLZA-LF and HGWLZA-LF include an LED alarm indicatorand silence switch. (See Figures 9 and 10.) During alarm, pressing the silenceswitch will silence the horn and illuminate the LED for a maximum of 10 min-utes. The silence can be reset by removing power for a minimum of 4 seconds.Also included in these models is a silence test feature. To use this, activate theNAC at the panel and put the system into alarm. Hold the silence button for5 to 10 seconds and release; the unit will silence but resound in 10 seconds.These devices are to be installed according to the requirements of the localcodes/authorities and CAN/ULC S524.For non-silenceable models, install a separate remote switch with the sounderor sounder strobes. Use a Residential Silence Module (model RSM-1A or aRSM-1RA and RSM-1SWA) to comply with the requirements of the localcodes/authorities and CAN/ULC S524 for dwelling spaces.Sounder-only models are approved for wall or ceiling installations.Sounder Strobe models approved for wall use only.FIRE ALARM SYSTEM CONSIDERATIONSThe National Building Code of Canada and CAN/ULC S525 require that allsounders used for building evacuation produce temporal coded signals. Sig-nals other than those used for evacuation purposes do not have to produce thetemporal coded signal. The National Fire Alarm Code, NFPA 72, requires thataudible appliances installed in sleeping areas produce a low frequency alarmsignal that shall be a square wave or provide equivalent awakening ability(effective Jan. 1, 2014). System Sensor recommends spacing notification appli-ances in compliance with NFPA 72.LOOP DESIGN AND WIRINGThe system designer must make sure that the total current drawn by the de-vices on the loop does not exceed the current capability of the panel supply,and that the last device on the circuit is operated within its rated voltage. Thecurrent draw information for making these calculations can be found in thetables within this manual. For convenience and accuracy, use the voltage dropcalculator on the System Sensor website.When calculating the voltage available to the last device, it is necessary toconsider the voltage drop due to the resistance of the wire. The thicker thewire, the smaller the voltage drop. Wire resistance tables can be obtainedfrom electrical handbooks. Note that if Class A wiring is installed, the wirelength may be up to twice as long as it would be for circuits that are not faulttolerant.INSTALLATION AND MAINTENANCE INSTRUCTIONSL-SeriesLow Frequency Sounder/StrobesFor use with the following models: Standard Wall Mount Sounder: HRLA-LF, HWLA-LF. Compact, Silenceable Wall Mount Sounder: HGRLZA-LF, HGWLZA-LF.Ceiling Mount Sounder: HCRLA-LF, HCWLA-LF. Wall Mount Sounder Strobe: P2RLA-LF, P2WLA-LF.(Sounder Strobes have English/French marking. Bezels required for other languages are sold separately.)PRODUCT SPECIFICATIONSOperating Temperature: 32°F to 120°F (0°C to 49°C)Humidity Range: 10 to 93% Non-condensingStrobe Flash Rate: 1 flash per secondNominal Voltage (Low Frequency Sounder): Regulated 24VDC/FWRNominal Voltage( Low Frequency Sounder/Strobe): Regulated 24VDC/FWROperating Voltage Range (includes fire alarm panels with built in sync): 16 to 33V (24V nominal)Operating Voltage with MDL3A Sync Module: 16.5 to 33V (24V nominal)Input terminal wire gauge: 12 to 18 AWGSilence Time 10 minutes max.Power down time to reset silence 4 secondsDIMENSIONS FOR PRODUCTS AND ACCESSORIESWALL PRODUCTS Length Width DepthStandard Sounder 5.6" (143mm) 4.7" (119mm) 1.5” (38 mm)Sounder Strobe 5.6” (143mm) 4.7” (119mm) 1.93” (49mm)Compact Silenceable Sounder 5.26" (133 mm) 3.46" (88 mm) 1.5” (38 mm)Standard device with SBBRL/WL Surface Mount Back Box 5.7" (145 mm) 4.8”(120mm) 3.3” (84mm)Compact device with SBBGRL/WL Surface Mount Back Box 5.4" (137 mm) 3.6”(91mm) 3” (76mm)NOTE: SBBRL/WL Surface Mount Back Box intended only for standard sounder and sounder strobe. SBBGRL/WLSurface Mount Back Box intended for compact sounder.CEILING PRODUCTS Diameter DepthSounder 6.83" (173.5mm) 1.4” (36mm)Sounder with SBBCRL/WL Surface Mount Back Box 6.92" (175.8mm) 3.9” (99mm)JUNCTION BOX OPTIONSStandard Indoor Products: 4" x 4" x 1½" (10.16 cm x 10.16 cm x 3.8 cm), Single Gang, Double Gang, 4" Octagon, SBBRL/WL (wall), SBBCRL/WL (ceiling)Compact Indoor Products: Single Gang, SBBGRL/WL (wall)NOTICE: This manual shall be left with the owner/user of this equipment.I56-6649-0003333 Unity Drive, Mississauga, ON L5L 3S6800/736-7672, FAX: 905-812-0771www.systemsensor.ca

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