wheelock ET70WP-24185W, ET70WP-24177C, ET70WP-2475 INSTALLATION INSTRUCTIONS

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INSTALLATION INSTRUCTIONS

Rated Strobe Candela (cd) Reverberant dBA at 10 Feet

(UL1971)

-40°C

(UL1638)

SERIES ET70WP LOW PROFILE WEATHERPROOF SPEAKER STROBE APPLIANCE

Use this product according to this instruction manual. Please keep this instruction manual for future reference.

GENERAL:

Cooper Wheelock’s Series ET70WP Low Profile Speaker Strobe appliance is UL Listed for indoor/outdoor use under Standard 1638 and Standard 1971 for Visual
Signal Appliances, Fire Protective Service and UL Standard 1480 for Speaker Appliances. For outdoor applications the ET70WP must be mounted to a Weatherproof
Backbox (IOB). They are designed for multiple power requirements with high dBA output at each power tap. This model offers a choice of field selectable taps, 1/8W
to 8W for either 25.0VRMS or 70.0VRMS 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 Low Profile Speaker Strobes 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 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.

WARNING: PLEASE READ THESE INSTRUCTIONS CAREFULLY. FAILURE TO COMPLY WITH ANY OF THE FOLLOWING
INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT IN IMPROPER APPLICATION, INSTALLATION AND/OR OPERATION OF
THESE PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO
YOU AND/OR OTHERS.

CAUTION: NOT RECOMMENDED FOR USE AT REFRIGERATOR / FREEZER DOOR ENTRANCES OR OTHER AREAS WITH PERSISTENT

CONDENSATIONS.

SPECIFICATIONS:

Table 1: UL Listed Models and Ratings

Speaker Strobe

Model Voltage

(VRMS)

1/8 1/4 1/2 1 2 4 8

(Rated Watts)

Regulated

Voltage

(VDC/VRMS)

Regulated
Voltage Range
(VDC/VRMS)

ET70WP-2475C 25/70 77 80 83 86 88 91 93 24 16.0-33.0 30/180 * 115
ET70WP-2475W 25/70 77 80 83 86 88 91 93 24 16.0-33.0 30/180 * 115
ET70WP-24115C 25/70 77 80 83 86 88 91 93 24 16.0-33.0 115 50
ET70WP-24135W 25/70 77 80 83 86 88 91 93 24 16.0-33.0 135 65

ET70WP-24177C 25/70 77 80 83 86 88 91 93 24 16.0-33.0 177 75
ET70WP-24185W 25/70 77 80 83 86 88 91 93 24 16.0-33.0 185 90

* 180cd on Axis only.
NOTES:

1. Strobes will produce 1 flash per second over the "Regulated Voltage" range.

2. All models are listed for indoor and outdoor use. UL 1971 is tested from a temperature range of 32ºF to 120ºF (0ºC to 49ºC). UL 1638 is tested from a
temperature range of -40ºF to +150ºF (-40ºC to +66ºC) with a maximum humidity of 95% RH. The effect of shipping and storage temperatures shall not
adversely affect the performance of the appliances when it is stored in the original cartons and is not subjected to misuse or abuse.

3. The maximum supervision voltage is 33 volts DC.

4. Frequency range of speakers is 400-4000Hz. dBA is rated per UL Standard 1480 for Speaker Appliances.

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 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.

Table 2: Strobe Current Ratings (AMPS)

Maximum RMS Current

UL Voltage 2475 24115 24135 24177 24185
DC 16-33VDC 0.138 0.300 0.300 0.420 0.420
FWR 16-33VRMS 0.222 0.455 0.455 0.645 0.645

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 powered 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 50.

Copyright 2007 Cooper Wheelock, Inc. All rights reserved.

P84848 B

Sheet 1 of 4

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 16.0-33.0 VOLTS FOR 24V MODELS USING

FILTERED DC OR UNFILTERED FULL-WAVE-RECTIFIED VOLTAGE. DO NOT APPLY VOLTAGE OUTSIDE OF THIS RANGE.

WARNING: CHECK 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 APPPLIED 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: MAKE SURE THAT 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
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.

WIRING AND MOUNTING INFORMATION:

CAUTION: The following figure shows 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.

WARNING: THIS UNIT MUST BE MOUNTED ON A FLAT SURFACE, SO THAT THE SURFACE COVERS THE ENTIRE BACK SURFACE OF
THE BACKBOX. WHEN USED IN AN OUTDOOR APPLICATION OR A NEMA 3R APPLICATION KNOCKOUTS IN THE REAR OF THE BACKBOX
MUST REMAIN INTACT.

CAUTION: Two screws must be used to mount backbox securely using both tabs included with the backbox.

Although the limits shown for each mounting option comply with the National Electrical Code (NEC), Cooper Wheelock 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.

A

SURFACE (INDOOR/OUTDOOR)

IOB BACKBOX

WOOD
SCREWS

AWG #14

8

Figure 2:

AWG #12

8

• 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.

• Break all in-out wire runs on supervised circuits to assure

FROM PRECEDING SPEAKER

FROM PRECEDING STR O BE

APPLIANCE OR SYNC MODULE

OR FIRE ALARM

CONTROL PANEL (FACP)

Figure 1:

#8-18 SCR E WS

MAXIMUM NUMBER OF CONDUCTORS

AWG #18 AWG #16

8 8

TO NEXT SPEAKER
OR END OF LINE RESISTOR
(EOLR)

TO NEXT A PPLIANCE
OR EOLR

integrity of circuit supervision as shown in Figure 2. The

+ STROBE - COM+

(OPTIONAL)

polarity shown in the wiring diagrams is for operation of the
appliances.

* Refer to Sync Module instruction sheets SM (P83123), DSM (P83177) or Wheelock power supplies for additional information.

GROUNDING: Connect ground wire to backbox. Install signaling appliance to backbox using mounting screws provided.

WARNING: CHECK ELECTRICAL RATINGS SPECIFIED IN TABLES 1 AND 2 (AS APPROPRIATE) TO ENSURE PROPER ELECTRICAL
INPUT. BE SURE THAT SPEAKER WIRING IS CONNECTED TO SPEAKER TERMINALS ONLY AND STROBE WIRING IS CONNECTED TO
STROBE TERMINALS ONLY. CHECK TO INSURE THAT WIRING AT FACP IS CORRECT. IMPROPER ELECTRICAL INPUT CAN DAMAGE
THE PRODUCT OR CAUSE IT TO MALFUNCTION, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO
YOU AND/OR OTHERS.

P84848 B

Sheet 2 of 4