D900-22-00
1
I56-1453-012R
SpectrAlert Ceiling Mount Series
Strobes and Horn/Strobes
For use with the following models:
Strobes:
24 volt: SC2415W, SC241575W, SC2430W, SC2475W, SC2495W, SC24115W, SC24177W
Horn/Strobes: 24 volt: PC2415W, PC241575W, PC2430W, PC2475W, PC2495W, PC24115W, PC24177W
Remove suffix “W” for red models.
Add suffix “P” for models with plain housing.
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; 6,057,778;
D424465; 5,931,569; 6,623,143
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 ceiling mount series notification appliances
are designed to meet the requirements of most agencies
governing these devices, including: NFPA, The National
Fire Alarm Code, UL, FM, CSFM, MEA. Also, check with
your local Authority Having Jurisdiction for other codes or
standards that may apply.
The SpectrAlert ceiling mount series can be installed in sys-
tems using 24-volt panels 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 in-
stalled after July 1, 1996, must produce Temporal Coded Signals.
Specifications
Mechanical
Input Terminals:
12 to 18 AWG
Overall Dimensions:
6.8˝ diameter (173 mm)
Operating Temperature:
32° F to 120° F (0° C to 49° C)
Electrical
Voltage:
Regulated 24 DC/FWR
Operational Voltage Range:
16–33 Volts
Synchronous Applications
with MDL Module:
17–33 Volts
NOTE: Horn units will operate on walk tests with on-time durations of .25 sec. or greater.
Flash Rate:
1 Flash Per Second
Light Output:
Models with 15 only in the model number are listed at 15 candela.
Models with 1575 in the model number are listed at 15 candela per UL 1971 but will provide
75 candela on axis (straight down).
Models with 30, 75, 95, 115, 177 are for that candela.
Sound Output:
Sound output levels are established at Underwriters Laboratories in their reverberant room.
Always use the sound output specified as UL Reverberant Room when comparing products.
Listings:
UL S5512 Strobe, UL S4011 (Combo)
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.
Signals other than those used for evacuation purposes do
not have to produce the Temporal Coded Signal. Temporal
coding is accomplished by interrupting a steady sound in
the following manner:
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 subsequent charts and must be the current specified for
the type of panel power supply used.
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
Repeats
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