D690-06-00 1 I56-3071-000
PF24VA Directional Sounder with Voice Messaging
INSTALLATION AND MAINTENANCE INSTRUCTIONS
6581 Kitimat Road, Unit 6
Mississauga, Ontario. L5N-3T5
www.systemsensor.ca
General Description
Before installing, please read the Directional Sound Ap-
plications Guide, available through System Sensor. The
installation must meet the requirements of the authority
having jurisdiction, CAN/ULC S524 and CSA C22.1. Di-
rectional sounders are used as supplemental signals on a
fire alarm system to aid in the evacuation of building occu
-
pants. Although directional sounders may be connected to
notification appliance circuits (NAC) for fire alarm service,
they are not a replacement for audible or visible notification
appliances as required by the authority having jurisdiction.
The directional sounder can be installed in systems us-
ing 24 Volt DC regulated power supplies only. It is not ap-
proved for use with FWR unregulated power supplies.
Directional sound is a broadband, multi-frequency sound.
The sound source is easily and quickly located by build-
ing occupants, making it ideal for rapid building evacua-
tion. The sounder incorporates four different speed settings
which consist of broadband noise. The four speed settings
can be used to create an egress pathway out of a build-
ing. The speed setting should be set faster for units installed
at the perimeter exit. In addition to the broadband noise,
the sounder is capable of playing an alert message in the
form of a recorded voice message or other audible signals.
These messages will instruct the occupant of what action
to take as they approach the directional sounder. The voice
messages include: exit here, stairs up, stairs down, or area
of refuge.
Speed settings are made via DIP switches on the back
of the sounder.
Specifications
Mechanical
Input terminals:
12 – 24 AWG
Sounder size:
4 inches (101mm)
Grille Size:
4
7
/
8
˝ (127mm)
Electrical
Voltage Input:
Regulated 24 Volts DC
Operation Voltage Range:
16 to 33 Volts
Operating Humidity Range:
10% to 93% relative humidity non-condensing
Frequency range:
707 Hz to 11314 Hz
Operating Temperature range:
32° to 120°F (0° to 49°C)
Power:
Selectable Low, Med-Low, Medium, Medium-High, High
Listings: ULC
NOTICE:
This manual should be left with the owner/user of the equipment.
Power Supply Considerations for
Directional Sounders
Panels typically supply DC filtered voltage or FWR (full-
wave rectified) voltage. This device is only compatible with
DC filtered supplies and must not be used with panel sup
-
plies that are FWR. Be certain the sum of all the device
currents do not exceed the current capability of the panel
power supply. Calculations are based on using the device
current found in
Table 1
and must be the current specified
for the installed settings of the device.
Wire Sizes
The last device on the circuit must have sufficient voltage
to operate the device within its rated voltage range. When
calculating the voltage available to the last device, it is
necessary to consider the voltage drop due to the resis-
tance of the wire. The thicker the wire, the less the voltage
drop. Generally, for purposes of determining the wire size
necessary for the system, it is best to consider all of the
devices as “lumped” on the end of the supply circuit (simu-
lates “worst case”).
Typical wire size resistance:
18 AWG solid: Approximately 8 ohms/1,000 ft.
16 AWG solid: Approximately 5 ohms/1,000 ft.
14 AWG solid: Approximately 3 ohms/1,000 ft.
12 AWG solid: Approximately 2 ohms/1,000 ft.
Example: Assume you have 10 devices on a zone and
each requires 50mA average and 2000 ft. of 14 AWG wir-
ing (total length = ou return). The voltage at the
end of the loop is 0.050 Amps per device × 10 devices × 3
ohms/1000 ft. × 2000 ft. = 3 volts drop.