System Sensor HR-LF, HW-LF, P2RH-LF, P2WH-LF User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

Low Frequency Sounder/Strobes

For use with the following models: P2RH-LF, P2WH-LF, HR-LF, HW-LF

PRODUCT SPECIFICATIONS

Operating Temperature: 32°F to 120°F (0°C to 49°C)

Humidity Range: 10 to 93% Non-condensing

Strobe Flash Rate: 1 flash per second

Nominal Voltage (Low Frequency Sounder): Regulated 12VDC/FWR or regulated 24VDC/FWR

Nominal Voltage( Low Frequency Sounder/Strobe): Regulated 24VDC/FWR

Operating Voltage Range (includes fire alarm panels with built in sync): 8 to 17.5V (12V nominal) or 16 to 33V (24V nominal)

Operating Voltage with MDL3 Sync Module: 8.5 to 17.5V (12V nominal) or 16.5 to 33V (24V nominal)

Input terminal wire gauge: 12 to 18 AWG

DIMENSIONS FOR PRODUCTS AND ACCESSORIES

PRODUCTS LENGTH WIDTH DEPTH

Low Frequency Sounder/Strobes (including lens)

Low Frequency Sounder

Low Frequency Sounder Strobe with SBBR/SBBW Surface Mount Back Box

Low Frequency Sounder with SBBR,
SBBW Surface Mount Back Box Length 5.7˝

6.4˝ 4.7˝ 2.5˝

162 mm 119 mm 64 mm

5.6˝ 4.7˝ 1.3˝

142 mm 119 mm 33 mm

6.4˝ 4.7˝ 4.3˝

162 mm 120 mm 108 mm

5.7˝ 4.8˝ 3.0˝

145 mm 120 mm 76 mm

800/736-7672, FAX: [phone]

www.systemsensor.com

I56-3889-000R

MOUNTING BOX OPTIONS

2-Wire Indoor Products

4 × 4 × 11/2, Single Gang, Double Gang, 4˝ Octagon

NOTICE: This manual shall be left with the owner/user of this equipment.

GENERAL DESCRIPTION

The SpectrAlert Advance 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. The sounder only version is designed for use in 12 or 24 volt,
DC or FWR (full wave rectified) systems. Sounder/Strobe versions are only
to be used with 24 volt, DC or FWR systems. These products are electrically
backward compatible with the previous generation of SpectrAlert 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
synchronization.

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 sig­nal. The National Fire Alarm Code, NFPA 72, will require effective Jan. 1, 2014
that audible appliances installed in sleeping areas produce a low frequency
alarm signal that shall be a square wave or provide equivalent awakening abil­ity. System Sensor recommends spacing notification appliances in compliance
with NFPA 72.

LOOP DESIGN AND WIRING

The system designer must make sure that the total current drawn by the de­vices 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
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 System Sensor website (systemsensor.com/volt).

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 40 for
24 volt applications or 12 for 12 volt applications. Loop resistance on a single
NAC should not exceed 120 ohms for 24 volt and 30 ohms for 12 volt systems.

The sounder and strobe circuits must be wired independently, and each circuit
must be terminated with the appropriate EOL device. Removal of a notifica­tion device will result in an open circuit indication on the strobe loop.

NOTE: A shorting spring is provided between terminals 2 and 3 of the mount­ing 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.

SS-120-006 1 I56-3889-000R

MOUNTING INDOOR WALL OR CEILING PRODUCTS

INPUT
FROM
F
OR
PRIOR
DEVICE

1. Attach mounting plate to junction box as shown in Figures 3 and 4. The
mounting plate is compatible with 4-inch square, double gang, and 4-inch oc­tagon junction boxes (2-wire products may be used with a single gang box).

2. Connect field wiring to terminals, as shown in Figures 1 .

3. If the product is not to be installed at this point, use the paint cover to
prevent contamination of the mounting plate. (For indoor models only)

4. To attach product to mounting plate, remove the paint cover, then hook
tabs on the product housing into the grooves on mounting plate.

5. Then, swing product into position to engage the pins on the product with
the terminals on the mounting plate. Make sure that the tabs on the back
of the product housing fully engage with the mounting plate.

6. Secure product by tightening the single mounting screw in the front
of the product housing. For tamper resistance, the standard captivated
mounting screw may be replaced with the enclosed Torx screw.

SURFACE MOUNT BACK BOX MOUNTING

1. The surface mount back box may be secured directly to the wall or ceil­ing. Grounding bracket provided if needed.

2. The wall mount box must be mounted with the up arrow pointing up.

3. Threaded knockout holes are provided for the sides of the box for ¾ inch
and ½ inch conduit adapter. Knockout plugs in the back of the box can
be used for ¾ inch and ½ inch rear entry.

4. To remove the ½ inch knockout, we recommend you use a flat head
screwdriver and place the blade along the inner edge and work your way
around the knockout as you strike the screwdriver, as shown in Figure

7. To remove the ¾ inch knockout place the blade of the screwdriver
along the edge and work your way around the knockout as you strike the
screwdriver, as shown in Figure 8.

5. V500 and V700 wiremold raceways are also provided. Use V500 for low
profile applications and V700 for high profile applications.

6. To remove the wire mold knockout turn pliers up, as shown in Figure 9.

7. Attach the mounting plate to the surface mount back box using the four
unpainted screws, as shown in Figure 5 or 6.

8. Follow steps 2-6 of the mounting indoor wall or ceiling products to wire
and attach the product.

FIGURE 3. WALL MOUNT LF SOUNDER:

2-wire mounting plate

FIGURE 4. WALL MOUNT LF SOUNDER/STROBE PRODUCT:

Models are approved for Wall
and Ceiling installations.

FIGURE 5. WALL MOUNT LF SOUNDER WITH

SURFACE MOUNT BACK BOX:

A0453-00

A0454-00

WIRING DIAGRAMS
FIGURE 1. WIRING 2-WIRE PRODUCTS:

ACP

+
–

FIGURE 2. SHORTING SPRING:

OUTPUT
TO
NEXT
DEVICE
OR EOL

+
–

A0367-01

A0455-00

FIGURE 6. WALL MOUNT LF SOUNDER/STROBE

WITH SURFACE MOUNT BACK BOX

SHORTING SPRING

A0368-00

SBB Shown

A0456-00

SS-120-006 2 I56-3889-000R