273 Branchport Ave.
Long Branch, N.J. 07740
(800) 631-2148
www.coopernotification.com
1
PN P83934S
Copyright 2012 Cooper Wheelock, Inc. dba Cooper Notification
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
GENERAL
Series E70-24MCW Multi-Candela Speaker Strobe is UL-Listed under Standard 1971 for (Signaling Devices for the Hearing Impaired) for
indoor fire protection service. The E70-24MCW is designed for multiple power requirements with high dBA output at each power tap and
offers a choice of field selectable taps, 1/8W to 2W, for either 25.0V
RMS
or 70.0V
RMS
audio systems. The low profile design incorporates a
high efficiency speaker for maximum output at minimum power across a frequency range of 400Hz to 4000Hz and features a sealed back
construction for extra protection and improved audibility. The E70-24MCW provides four selectable light output intensities in one unit and
incorporates a speaker mounting plate attached to the speaker for ease of installation. The low profile speaker strobe can provide a non-
synchronized strobe appliance when connected directly to a Fire Alarm Control Panel (FACP) or provide a synchronized strobe appliance
when used in conjunction with a Sync Module (SM), Dual Sync Module (DSM) or Cooper Wheelock power supplies. The strobes use a
Xenon flashtube with solid state circuitry enclosed in a polycarbonate lens to provide maximum visibility and reliability for effective visible
signaling. The E70-24MCW is Listed for
indoor use, wall mount only
with the backboxes specified in these instructions (see wiring and
mounting information).
WARNING: Please read these instructions carefully. Failure to comply with any of the following instructions, cautions and warn-
ings could result in improper application, candela setting, installation and/or operation of these products in an emergency situa-
tion, which could result in property damage and serious injury or death to you and/or others.
SPECIFICATIONS
Table 1: UL Listed Models and Ratings
Models
Speaker
Strobe
Voltage
(V
RMS
)
dBA at 10 Feet
(Rated Watts)
Regulated Voltage
(VDC/V
RMS
)
Voltage Range
(VDC/V
RMS
)
Candela
1/8
1/4
1/2
1
2
E70-24MCW
25/70
76
80
82
85
88
24
16.0-33.0
15/30/75/110
NOTES
•
The strobe produces 1 flash per second over the Regulated Voltage range.
•
The E70-24MCW is UL-Listed for indoor use with a temperature range of +32
°
F to +120
°
F (0
°
C to +49
°
C) and maximum humidity
of 85% RH. The effect of shipping and storage temperatures must not adversely affect the performance of the appliance when it is
stored in the original cartons and is not subjected to misuse or abuse.
•
The maximum supervision voltage is 33 Volts DC.
•
Frequency range of speakers is 400-4000Hz.
CAUTION:
Always operate audio amplifiers and speakers within their specified ratings. Excessive input may distort sound quality and may
damage audio equipment. Do not exceed 100% of speaker input voltage per UL 1480. Improper input voltage can damage the speaker.
If distortion is heard, check for clipping of the audio appliance with an oscilloscope and reduce the amplifier input level or gain level to
eliminate any clipping.
WARNING: Candela setting determines the current draw of the product.
Table 2: UL Current Rating with Strobe Only
Maximum RMS Current (AMPS)
UL Voltage
15cd
30cd
75cd
110cd
DC
16-33VDC
0.060
0.092
0.165
0.22
FWR
16-33V
RMS
0.102
0.155
0.253
0.347
When calculating the total currents use Table 2 to determine the highest value of RMS current for an individual strobe, then multiply these
values by the total number of strobes. Be sure to add the currents for any other appliances, including audible signaling appliances pow-
ered by the same source, and to include any required safety factors.
NOTE:
The maximum number of strobes on a single notification appliance circuit shall not exceed 47.
CAUTION:
These strobes are UL-Listed as Regulated. They are intended to be used with FACPs whose notification circuits are UL Listed
as “Regulated.” These appliances shall not be used on UL Listed “Special Application” notification circuits unless the appliances are
identified to be compatible in the installation instructions of the FACP or unless the FACP is identified to be compatible in this instruction
manual.
WARNING: These strobes were tested to the regulated voltage limits of 16-33 Volts for 24V models using filtered DC or unfiltered
full-wave-rectified voltage. Do not apply voltage outside of this range.
WARNING: Verify the minimum and maximum output of the power supply and standby battery and subtract the voltage drop from
the circuit wiring resistance to determine the applied voltage to the strobes. The maximum wire impedance between strobes shall
not exceed 35 ohms.
CAUTION:
Strobes are not designed to be used on coded systems in which the applied voltage is cycled on and off.
WARNING: Ensure the total RMS current required by all appliances that are connected to the system’s primary and secondary
power sources, notification appliance circuits, SM, DSM sync modules, or Cooper Wheelock power supplies does not exceed the
power sources’ rated capacity or the current ratings of any fuses on the circuits to which these appliances are wired. Overloading
power sources or exceeding fuse ratings could result in loss of power and failure to alert occupants during an emergency, which
could result in property damage and serious injury or death to you and/or others.
LIGHT OUTPUT
WIRING AND MOUNTING INFORMATION
CAUTION:
The following figures show the maximum number of field wires (conductors) that can enter the backbox used with each
mounting option. If these limits are exceeded, there may be insufficient space in the backbox to accommodate the field wires and stresses
from the wires could damage the product. Verify the installed product will have sufficient clearance and wiring room prior to installing
backboxes and conduit, especially if sheathed multiconductor cable or 3/4-inch conduit fittings are used.
Although the limits shown for each mounting option comply with the National Electrical Code (NEC), Cooper Notification recommends use
of the largest backbox option shown and the use of approved stranded field wires, whenever possible, to provide additional wiring room
for easy installation and minimum stress on the product from wiring.
4" SQ. X 1-1/2"
A
FLUSH MOUNTING
4" SQ. X 2-1/8"
BACKBOX
#8-32
SCREWS
EXTENSION RING *
SCREWS
#6-19
ROUND GRILLE
SQUARE OR
(STROBE SPEAKER)
SPEAKER
MOUNTING
PLATE
MAXIMUM NUMBER OF CONDUCTORS
AWG #18 AWG #16 AWG #14 AWG#12
8 8 8 8
4" SQ. 3-1/2" & 4" OCTAGON OR ROUND BACKBOXES.
MOUNTING HOLES ARE FOR SINGLE-GANG, DOUBLE-GANG,
NOTE: BACKBOX IS COMPATIBLE WITH WIREMOLD AND CONDUIT,
SURFACE MOUNTING
B
#8-32
SCREWS
BACKBOX
(SBB)
SURFACE
PLATE
MOUNTING
SPEAKER
SQUARE
GRILLE
SCREWS
#6-19
(STROBE SPEAKER)
MAXIMUM NUMBER OF CONDUCTORS
AWG #18 AWG #16 AWG #14 AWG#12
8 8 8 8
1. This model has in-out wiring terminals that accept two #12 to #18 American Wire Gauge (AWG) wires at each screw terminal. Strip
leads 3/8-inches and connect to screw terminals.
2. Break all in-out wire runs on supervised circuits to ensure the integrity of the circuit supervision as shown in Figure 2. The polarity
shown in the wiring diagrams is for operation of the appliances.
INSTALLATION INSTRUCTIONS
SERIES E70-24MCW MULTI-CANDELA
SPEAKER STROBE
