D900-34-00
1
I56-1901-001R
SpectrAlert Horns, Strobes, and
Horn/Strobes
For use with the following models:
Horns:
12/24 volt:
H12/24K
Strobes:
12 volt:
S1215K, S121575K
24 volt:
S2415K, S2430K, S241575K, S2475K, S24110K
Combo:
12 volt:
P1215K, P121575K
24 volt:
P2415K, P2430K, P241575K, P2475K, P24110K
“K” model horns and horn/strobes are rated as weatherproof. “K” model strobes are both weatherproof and outdoor rated.
Only red housings are available with these models.
The Products to which this manual applies may be covered by one or more of the following U.S. Patent numbers: 5,914,665; 5,850,178; 5,598,139; 6,049,446; 5,593,569, 6,133,843
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
General Description
The SpectrAlert series notification appliances are designed to meet the
requirements of most agencies governing these devices, including: NFPA,
ADA, The National Fire Alarm Code, UL, CSFM, MEA. Also, check with
your local Authority Having Jurisdiction for other codes or standards that
may apply.
The SpectrAlert series can be installed in systems using 12- or 24-volt pan-
els having DC or full-wave rectified (FWR) power supplies. The series can
also be installed in systems requiring synchronization (module MDL
required) or systems that do not require synchronization (no module
required).
NOTICE:
This manual shall be left with the owner/user of this equipment.
Fire Alarm System Considerations
Temporal and Non-Temporal Coded Signals:
The American National Standards Institute and the National Fire Alarm
Code require that all horns used for building evacuation installed after July
1, 1996, must produce Temporal Coded Signals.
Signals other than those used for evacuation purposes do not have to pro-
duce the Temporal Coded Signal. Temporal coding is accomplished by inter-
rupting a steady sound in the following manner:
Specifications
Voltage Range:
DC or Full-Wave Rectified
Horn:
10.5 to 30 Volts
Strobes & Horn/Strobes:
12-volt models – 10.5 to 17 volts; 24-volt models – 20 to 30 volts
(with MDL-FC module):
12-volt models – 11 to 17 volts; 24-volt models – 21 to 30 volts
NOTE: Horn and combo units will operate on walk tests with on-time durations of 1 sec. or greater.
Flash Rate:
1 Flash Per Second
K Series Operating Temperatures: Horn and horn/strobe models are indoor listed, having a temperature range of 32° F to 150° F (0° C to 66° C) and are
Rainproof per UL50 (NEMA 3R).
Strobe only models have a temperature range of –40° F to 158° F (–40° C to 70° C), and are indoor/outdoor listed per
UL1638 and indoor listed per UL1971. The S24110K is rated 60 candela @ –40° C. S2475K and S241575K are rated 41
candela @ –40° C.
Light Output:
Models with 15 only in the model number are listed at 15 candela
Models with 1575 are listed at 15 candela per UL 1971 but will provide 75 candela on axis (straight ahead)
Models with 30, 75 or 110 are rated for that candela.
Sound Output:
Sound output levels are established at Underwriters Laboratories in their reverberant room. Always use the sound out-
put specified as UL Reverberant Room when comparing products.
Listings:
K Series models are UL, CSFM, MEA listed only.
Note for Strobes: Do not exceed; 1) 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.
Power Supply Considerations
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 currents do not exceed the current capability of the panel.
Calculations are based on using the device current found in the subse-
quent charts 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 volt-
age 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=oureturn).
The voltage at the end of the loop is 0.050 amps per device x 10 devices
x 3 ohms/1,000 ft. x 2000 ft =3 volts drop.
Note: If class “A” wiring is installed, the wire length may be up to 4 times
the single wire length in this calculation.
1
/
2
Sec.
On
1
/
2
Sec.
Off
1
/
2
Sec.
On
1
/
2
Sec.
Off
1
/
2
Sec.
On
1
1
/
2
Sec.
Off
Re
firealarmresources.com
