Wheelock Cooper ET70 Installation Instructions

273 Branchport Avenue
Long Branch, NJ 07740
(800) 631-2148
www.cooperwheelock.com
Use this product according to this instruction manual. Please keep this instruction manual for future reference.

GENERAL:

Wheelock's Series ET70/90 Low Profile Speakers and Speaker Strobes are UL Listed under Standard 1971 for Signaling Devices for the Hearing Impaired and UL
Standard 1480 for Speaker Appliances. They are designed for multiple power requirements with high dBA output at each power tap. All models offer a choice of field
selectable taps, 1/8W to 8W for either 25.0VRMS or 70.0VRMS audio systems. Speaker strobes with color lens are not UL approved. 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 Series ET appliances also incorporate a speaker mounting plate attached to the speaker for ease of installation. 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. The 241575W candela wall mounted
strobes are listed at 15 candela under UL Standard 1971 and meet 75 candela intensity on axis with low current draw. The ET70/ET90 Speaker Strobe for wall
mounting only is available with the UL Listed strobe option: 241575W. The ET70/ET90 Speaker Strobes with color lens are for wall or ceiling mounting. All models
are Listed for indoor use only with the backboxes specified in these instructions (see wiring and mounting information).
WARNING: PLEASE READ THESE INSTRUCTIONS CAREFULLY.
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.

SPECIFICATIONS:

Models
Voltage
(VRMS)
ET70 25/70
ET70-241575W* 25/70
ET90 25/70
ET90-241575W* 25/70
NOTES:
1. The strobe will produce 1 flash per second over the "Regulated Voltage" range.
2. Strobes meet the required light distribution patterns defined in UL 1971.
3. Models are 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 shall not adversely affect the performance of the appliance when it is stored in the original cartons and is not subjected to misuse or
abuse.
4. The maximum supervision voltage is 33 volts DC.
5. Frequency range of speakers is 400-4000Hz.
6. Candela ratings listed in Table 1 are for clear lens. Derate approximately 25% for amber lens, 55% for green lens, 70% for blue lens and 80% for red lens.
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.
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.
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.
Copyright 2007 Cooper Wheelock, Inc. All rights reserved.
INSTALLATION INSTRUCTIONS
SERIES ET70/90 LOW PROFILE SPEAKERS AND SPEAKER STROBES
Table 1: UL Listed Models and Ratings
Speaker
dBA at 10 Feet
(Rated Watts)
1/8 1/4 1/2 1
75 78 81 84
75 78 81 84
75 78 81 84
75 78 81 84
*241575W models are UL Listed at 15cd and meet 75cd on axis.
Table 2: UL Current Ratings with Strobe Only
Maximum RMS Current (AMPS)
UL Voltage
DC 16-33VDC
FWR 16-33VRMS
FAILURE TO COMPLY WITH ANY OF THE FOLLOWING
Regulated
Voltage
2 4 8 (VDC/VRMS)
87 90 93 ----
87 90 93 24
87 90 93 ----
87 90 93 24
241575W
0.090
0.145
Strobe
Voltage
Range Candela
(VDC/VRMS)
---- ----
16-33 15
---- ----
16-33 15
Mounting
Options
A,C
B,D
A
B,D
P83567 P
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