P83493 B
Sheet 1 of 7
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Long
Branch,
NJ
07740
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631-2148
INSTALLATION INSTRUCTIONS
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SERIES ET70/90 LOW PROFILE HIGH INTENSITY SPEAKER STR
OBES
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
GENERAL:
Wheelock’s Series ET70/90 Low Profile High Intensity 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. 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’s Power Supplies. The Strobes use a Xenon flashtube with solid state circuitry enclosed in a rugged Lexan
lens to
provide maximum visibility and reliability for effective visible signaling.
NOTE
: “Lexan” is a registered trademark of General Electric Corporation.
NOTE
:
All
CAUTIONS
and
WARNINGS
are identified by the symbol
. All warnings are printed in bold capital letters.
WARNING: 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.
SPECIFICATIONS:
Table 1: UL Listed Models and Ratings
Speaker
Strobe
dBA at 10 Feet
Regulated Voltage
Mounting
Models Voltage
(Rated
Watts)
(VDC/VRMS)
Candela
Options
(VRMS) 1/8 1/4 1/2 1 2 4 8 Min
Nom
Max
ET70-24150W 25/70
75 78 81 84 87 90 93 ---- ---- ---- 150
A,B
ET70-24177W 25/70
75 78 81 84 87 90 93 16 24 33 177
A,B
ET70-24185W 25/70
75 78 81 84 87 90 93 16 24 33 185
A,B
ET70-24150C
25/70
75 78 81 84 87 90 93 16 24 33 150
A,B
ET70-24177C
25/70
75 78 81 84 87 90 93 16 24 33 177
A,B
ET90-24150W 25/70
75 78 81 84 87 90 93 16 24 33 150
A
ET90-24177W 25/70
75 78 81 84 87 90 93 16 24 33 177
A
ET90-24185W 25/70
75 78 81 84 87 90 93 16 24 33 185
A
ET90-24150C
25/70
75 78 81 84 87 90 93 16 24 33 150
A
ET90-24177C
25/70
75 78 81 84 87 90 93 16 24 33 177
A
NOTES
:
1. Strobes will produce 1 flash per second over the “Regulated Voltage” range.
2. All 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.
3. dBA is rated per UL Standard 1480 for Speaker Appliances.
NOTE: THE MAXIMUM WIRE IMPEDENCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS. THE MAXIMUM
NUMBER OF STROBES ON A SINGLE NOTIFICATION APPLIANCE CIRCUIT SHALL NOT EXCEED 47.
WARNING: THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 16-33 VOLTS USING
FILTERED (DC) OR UNFILTERED FULL-WAVE-RECTIFIED (FWR). DO NOT APPLY 80% AND 110% OF THESE
VOLTAGE VALUES FOR SYSTEM OPERATION.
Copyright 2003 Wheelock, Inc. All rights reserved.
