System Sensor L-Series Installation And Maintenance Instructions

INSTALLATION AND MAINTENANCE INSTRUCTIONS
L-Series Low Frequency
Sounders, Strobes, and Sounder/Strobes
For use with the following models: P2RL-LF, P2WL-LF, HRL-LF, HWL-LF, HGRL-LF, HGWL-LF, HCRL-LF, HCWL-LF, PC2RL-LF, PC2WL-LF
PRODUCT SPECIFICATIONS
Operating Temperature:
Humidity Range:
Strobe Flash Rate:
Nominal Voltage (Low Frequency Sounder):
Nominal Voltage (Low Frequency Sounder/Strobe):
Operating Voltage Range (includes fire alarm panels with built in sync):
Operating Voltage with MDL3 Sync Module:
Input terminal wire gauge:
DIMENSIONS FOR PRODUCTS AND ACCESSORIES
WALL PRODUCTS
Standard Sounder
Sounder Strobe
Compact Sounder
Standard device with SBBRL/WL Surface Mount Back Box
Compact device with SBBGRL/WL Surface Mount Back Box
NOTE: SBBRL/WL Surface Mount Back Box intended only for standard sounder and sounder strobe. SBBGRL/WL Surface
Mount Back Box intended for compact sounder.
CEILING PRODUCTS
Sounder
Sounder Strobe
Device with SBBCRL/WL Surface Mount Back Box
JUNCTION BOX OPTIONS
Standard Indoor Products:
Compact Indoor Products:
NOTICE: This manual shall be left with the owner/user of this equipment.
GENERAL DESCRIPTION
The L-Series low frequency series of notification appliances offers a range
of low frequency sounder and low frequency sounder/strobe products for
wall and ceiling applications. Studies have shown that low frequency audible
devices that operate around 520Hz are more effective in waking individuals
in sleeping areas. These products are electrically backward compatible with
the previous generation of SpectrAlert Advance notification appliances. The
2-wire products fit systems where a single NAC controls both sounder and
strobe. The System Sensor MDL3 module may be used to provide synchroni-
zation for strobes and sounder strobes configured for Temp 3 tone.
Sounder-only models are approved for wall and ceiling installations.
FIRE ALARM SYSTEM CONSIDERATIONS
The National Fire Alarm Code, NFPA 72, requires that all sounders, used for
building evacuation produce temporal coded signals. Signals other than those
used for evacuation purposes do not have to produce the temporal coded sig-
nal. The National Fire Alarm Code, NFPA 72, requires that audible appliances
installed in sleeping areas produce a low frequency alarm signal that shall
be a square wave or provide equivalent awakening ability (effective Jan. 1,
2014). System Sensor recommends spacing notification appliances in compli-
ance with NFPA 72.
LOOP DESIGN AND WIRING
The 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. The
Length
5.6" (143mm)
5.6" (143mm)
5.26" (133 mm)
5.7" (145 mm)
5.4" (137 mm)
Diameter
6.83" (173.5mm)
6.83" (173.5mm)
6.92" (175.8mm)
4" x 4" x 1½", Single Gang, Double Gang, 4" Octagon, SBBRL/WL (wall), SBBCRL/WL (ceiling)
Single Gang, SBBGRL/WL (wall)
32°F to 120°F (0°C to 49°C)
10 to 93% Non-condensing
1 flash per second
Regulated 24VDC/FWR
Regulated 24VDC/FWR
16 to 33V (24V nominal)
16.5 to 33V (24V nominal)
12 to 18 AWG
Width
4.7" (119mm) 1.5" (38 mm)
4.7" (119mm) 1.93" (49mm)
3.46" (88 mm) 1.5" (38 mm)
4.8"(120mm) 3.3" (84mm)
3.6"(91mm) 3" (76mm)
Depth
1.4" (36mm)
2.47" (62.7mm)
3.9" (99mm)
current draw information for making these calculations can be found in the
tables within this manual. For convenience and accuracy, use the voltage drop
calculator on the Tools menu of the System Sensor website.
When calculating the voltage available to the last device, it is necessary to
consider the voltage drop due to the resistance of the wire. The thicker the
wire, the smaller the voltage drop. Wire resistance tables can be obtained
from electrical handbooks. Note that if Class A wiring is installed, the wire
length may be up to twice as long as it would be for circuits that are not fault
tolerant.
NOTE: The total number of strobes on a single NAC must not exceed 69 for
24 volt applications. Loop resistance on a single NAC should not exceed 120
ohms for 24 volt.
NOTE: A shorting spring is provided between terminals 2 and 3 of the mount-
ing plate to enable wiring checks after the system has been wired, but prior
to installation of the final product. This spring will automatically disengage
when the product is installed, to enable supervision of the final system.
Removal of a notification device will result in an open circuit indication on
the NAC.
1
3825 Ohio Avenue, St. Charles, Illinois 60174
800/736-7672, FAX: 630/377-6495
www.systemsensor.com
Depth
I56-6648-002
7/28/2020