System Sensor SP2R1224MCK User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

SpectrAlert Selectable Output Outdoor Wall Speaker/Strobes for Fire Protective Signaling Systems

Model SP2R1224MCK U.S. Patent Nos. 5,850,178; 5,598,139; 6,049,446; 6,522,261; 6,661,337; 6,793,375; 6,822,400; 6,833,783; 5,931,569; 6,856,241

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

www.systemsensor.com

Specifications:

Mechanical:

Input Terminals: 12 to 18 AWG Speaker Size: 4 inches (101 mm) Grille Size: 413/16˝ (122 mm) Outdoor Back Box: 9.22˝ × 5.87˝ × 2.38˝

Electrical:

Operating Temp. Range: –40°F to 150.8°F (–40°C to 66°C) Max. Supervisory Voltage: 50 VDC

For Speaker:

Voltage Input: 25 volts or 70.7 volts (nominal) Frequency Range: 400 – 4000 Hz

Input Power Settings:

/4, 1/2, 1 and 2 Watts Sound Output: Sound output levels are established at Underwriters

Laboratories in their anechoic room. Always use the sound output specified as UL Anechoic Room when comparing products.

For Strobe:

Voltages: Regulated 12 DC/FWR and

Regulated 24 DC/FWR Operational Volt. Ranges: 8–17.5 Volts and 16–33 Volts Synchronous Applications with MDL Module: 9–17.5 Volts and 17–33 Volts NOTE: The outdoor speaker/strobe is suitable for use in dry and wet environments. Flash Rate: 1 flash per second Selectable Light Outputs: All candelas are selectable via

a manual slide switch. 12/24 Volt Applications: 15 or 15/75 candela 24 Volt Application: 30, 75, 110 candela 15/75 is listed at 15 candela per UL 1971 but will provide

75 candela on axis (straight ahead). 15, 30, 75, or 110 are rated for that candela.

Listings: UL 1971/1638 (Strobe); UL 1480 (Speaker); NEMA 3R

Note for Strobes: Do not exceed; 1) 8-17.5 or 16-33 voltage range limit; 2) maximum number of 70 strobe lights when connecting the MDL Sync module with a maximum line impedance of 4 ohms per loop and; 3) maximum line impedance as required by the fire alarm control manufacturer.

Model

SP2R1224MCK

The benefit to the customer is a high quality strobe device.

incorporates a new patented voltage booster design that has a more consistent flash bulb voltage over the range of candela selections.

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

General Description

The SpectrAlert SP2 series speaker/strobes are designed to meet the requirements of most agencies governing these devices, including: NFPA, ADA, The National Fire Alarm Code, UL. Also, check with your local Authority Having Jurisdiction for other codes or standards that may apply.

The SpectrAlert SP2 series speakers can be operated with distribution amplifiers having an output 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 installation, but can be changed, if necessary.

The speaker is also equipped with a capacitive input to allow for DC supervision.

The SpectrAlert SP2 series strobe can be installed in systems using 12 or 24-volt panels having DC or full-wave rectified (FWR) power supplies. The strobes can also be installed in applications requiring synchronization (module MDL or compatible equivalent required) or applications that do not require synchronization (no module required).

Power Supply Considerations For Strobes

Panels typically supply DC filtered voltage or FWR (fullwave 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 currents 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.

D900-40-00 1 I56-2609-002R

25.0V

70.7V

1/2W

1/4W

25.0V

70.7V

1/2W

1/4W

CORRECT

SW1

INCORRECT

CAUTION

Wire Sizes

TO NEXT STROBE OR EOL

INPUT FROM POWER SUPPLY

INPUT FROM AMPLIFIER

TO NEXT SPEAKER OR EOL

STROBESPEAKER

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 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 (simulates “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 50 mA average and 2000 Ft. of 14 AWG wiring (total length=outgoing+return). The voltage at the end of the loop is 0.050 amps per device × 10 devices × 3 ohms/ 1,000 ft. × 2000 ft =3 volts drop.

Figure 1. Electrical connections:

A0101-00

NOTE: Supply power for strobe must be continuous for

proper operation.

2. See Figure 2 as an example of how to select a 1⁄4 Watt input when a 25 volt amplifier is being used. Notice that the header, SW1, has two shunts. One shunt is used to select either 25 or 70.7 volts input. The other shunt is used to select input power of 1⁄4, 1⁄2, 1 or 2 Watts. Table 1 lists the UL reverberant and anechoic output sound levels for each power tap on the SP2 series speaker/strobes.

Figure 2. Speaker Voltage and Power Selection:

The same number of devices using 12 AWG wire will produce only 2 volts drop. The same devices using 18 AWG wire will produce 8 volts drop. Consult your panel manufacturer’s specifications, as well as SpectrAlert’s operating voltage range to determine acceptable voltage drop.

NOTE: If class “A” wiring is installed, the wire length may be up to 4 times the single wire length in this calculation.

Installation

All wiring must be installed in compliance with the National Electrical Code (NEC) and applicable local codes as well as special requirements of the authority having jurisdiction, using the proper wire size. This also includes all applicable NFPA Standards, ANSI/UL 1480, UL 1971 and NEC 760.

Electrical

1. Connect the speaker/strobe as shown in Figure 1. Keep

Table 1. Sound levels for each transformer power tap:

INPUT

VOLTS

25.0 89 87 85 81

2 W 1 W1/2 W1/4 W

Reverberant

(dBA @ 10 ft.)

70.7 90 87 84 81

in mind that even though the speaker and strobe are a single mechanical unit, they are electrically independent and require separate power sources.

Signal levels exceeding 130% rated signal voltage can dam-

NOTE: Do NOT loop electrical wiring under terminal

screws. Wires connecting the device to the control

D900-40-00 2 I56-2609-002R

panel must be broken at the device terminal connection in order to maintain electrical supervision.

age the speaker. Consequently, an incorrect tap connection may cause speaker damage. This means that if a 25V tap is selected when a 70.7V amplifier is being used, speaker damage may result. Therefore, be sure to select the proper taps for the amplifier voltage/input power level combination being used.

A0102-00

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