Pittway System Sensor SpectrAlert SP2C Series Installation And Maintenance Instructions

Ceiling mount speaker/strobes for fire protective signaling systems

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Installation AND MAINTENANCE INSTRUCTIONS
SpectrAlert SP2C Series
Ceiling Mount Speaker/Strobes for
Fire Protective Signaling Systems
For use with the following models: SP2C2415, SP2C241575, SP2C2430, SP2C2475,
SP2C2495, SP2C24115, SP2C24177
U.S. Patent Nos. 5,850,178; 5,598,139; 6,049,446; 6,057,778; D424465

Specifications: Speaker

Mechanical
Input Terminals:
12 to 18 AWG
(3.31 to 0.82 mm
Speaker Size:
4 inches
(101 mm)
Overall Dimensions: 6.8" diameter
(173 mm)
Voltage Input:
25 volts or 70.7 volts
(nominal)
Frequency Range:
400 - 4000 Hz
Power:
1/4, 1/2, 1 and 2 Watts
Operating
Temperature Range: 32° to 120°F
(0° to 49°C)
Listings:
UL S4048 Speaker/Strobe
Note: Strobes have a 16–33 Volt Operating Range Limit. Do not exceed the maximum number of 70 strobe lights when
connecting the MDL Sync module zone with a maximum line impedance of 4 Ohms per loop.
NOTICE: This manual shall be left with the owner/user of
this equipment.

General Description

The National Fire Protection Association (NFPA) has pub-
lished standards and recommended practices for the speak-
er/strobes described in this manual. As a result, the
installer must be familiar with these requirements as well
as all local codes and special requirements of the authority
having jurisdiction.
The SpectrAlert SP2C series ceiling mount speaker/strobe
can be operated with distribution amplifiers having an out-
put voltage of either 25 volts or 70.7 volts.
The speakers operate at any one of four input power levels.
The output sound level is selected at the time of installa-
tion, but can be changed, if necessary.
The speaker is also equipped with a capacitive input to
allow for DC supervision.
The SpectrAlert SP2C series ceiling mount strobe can be
installed in systems using 24-volt panels having DC or full-
wave rectified (FWR) power supplies. The strobes can also
be installed in applications requiring synchronization (MDL
required) or applications that do not require synchroniza-
tion (no module required).
The SpectrAlert SP2C series ceiling mount speaker/strobes
are designed to meet the requirements of most agencies gov-
erning these devices, including: NFPA, The National Fire
Alarm Code, UL, CSFM, MEA. Also, check with your
local Authority Having Jurisdiction for other codes or stan-
dards that may apply.
D690-02-00

Specifications: Strobe

Voltage Range:
15 through 115 candela models
Strobes:
2
)
(with MDL module):
177 candela models only
Strobes:
(with MDL module):
Flash Rate:
Light Output:

Power Supply Considerations For Strobes

Panels typically supply DC filtered voltage or FWR (full-wave
rectified) voltage. The system design engineer must calculate
the number of units used in a zone based on the
type of panel supply. Be certain the sum of all the device cur-
rents do not exceed the current capability of the panel.
Calculations are based on using the device current found in
Table 2 and must be the current specified for the type of panel
power supply used.

Wire Sizes

The designer must be sure that the last device on the circuit
has sufficient voltage to operate the device within its rated
voltage. 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 less the volt-
age 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.
Note: If class "A" wiring is installed, the wire length may be
up to 4 times the single wire length in this calculation.
1
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
DC or Full-Wave Rectified
16 to 33 volts DC or Full Wave Rectified
17 to 33 volts DC or Full Wave Rectified
16 to 33 volts DC; 20 to 33 volts Full
Wave Rectified
17 to 33 volts DC; 21 to 33 volts Full
Wave Rectified
1 flash per second
Models with 1575 are listed at 15 candela
per UL1971 but will provide 75 candela on
axis (straight down).
Models with 15, 30, 75, 95, 115 and 177
are listed for that candela.
A Division of Pittway
I56-1455-004R

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Summary of Contents for Pittway System Sensor SpectrAlert SP2C Series

  • Page 1 INSTALLATION AND MAINTENANCE INSTRUCTIONS SpectrAlert SP2C Series A Division of Pittway Ceiling Mount Speaker/Strobes for 3825 Ohio Avenue, St. Charles, Illinois 60174 1-800-SENSOR2, FAX: 630-377-6495 www.systemsensor.com Fire Protective Signaling Systems For use with the following models: SP2C2415, SP2C241575, SP2C2430, SP2C2475, SP2C2495, SP2C24115, SP2C24177 U.S.
  • Page 2 Example: Assume you have 10 devices on a zone and each Electrical requires 50 mA average and 2000 Ft. of 14 AWG wiring 1. Connect the speaker/strobe as shown in Figure 1. Keep (total length=outgoing +return). The voltage at the end in mind that even though the speaker and strobe are a of the loop is 0.050 amps per device x 10 devices x 3 ohms single mechanical unit, they are electrically independent...
  • Page 3 2. See Figure 2 as an example of how to select a 1/4 Watt Figure 4: Positioning for maximum brightness input when a 25 volt amplifier is being used. Notice that NOTE: For maximum brightness, unit must be mounted the header, SW1, has two shunts. One shunt is used to with flash angles as shown.
  • Page 4 Please refer to insert for the Limitations of Fire Alarm Systems WARNING The Limitations of Ceiling Mount Speaker/Strobes If either of the voltage select or power select shunts is not plugged into The signal strobe may not be seen. The electronic visual warning signal one of the appropriate option positions, the speaker will not sound and uses an extremely reliable xenon flash tube.

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