Bosch ET70-R, ET70-241575W-FW, ET70-241575W-FR, ET70-241575W-FN Installation Manual

273 Branchport Avenue Long Branch, NJ 07740 Thank you for using our products. (800) 631-2148 INSTALLATION INSTRUCTIONS www.wheelockinc.com SERIES ET70/90 LOW PROFILE SPEAKERS AND SPEAKER STROBES

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. 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 Speaker Strobe for wall mounting only 241575W. The ET90 Speaker Strobes for ceiling mounting only. wiring and mounting information).

All models are Listed for indoor use only with the backboxes specified in these instructions (see

is available with the UL Listed strobe option:

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.

SPECIFICATIONS:

Table 1: UL Listed Models and Ratings

Models

dBA at 10 Feet Regulated Voltage Mounting

Voltage (Rated Watts) Voltage Range Candela Options

Speaker Strobe

(VRMS) 1/8 1/4 1/2 1 2 4 8 (VDC/VRMS) (VDC/VRMS) ET70 25/70 75 78 81 84 87 90 93 ---- ---- ---- A,C ET70-241575W* 25/70 75 78 81 84 87 90 93 24 16-33 15 B,D ET90 25/70 75 78 81 84 87 90 93 ---- ---- ---- A

*241575W models are UL Listed at 15cd and meet 75cd on axis.

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.

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: UL Current Ratings with Strobe Only

Maximum RMS Current (AMPS)

UL Voltage 241575W DC 16-33VDC 0.090 FWR 16-33VRMS 0.145

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.

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.

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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 APPLICIANCE 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 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. Check that the installed product will have sufficient clearance and wiring room prior to installing backboxes and conduit, especially if sheathed multiconductor cable or 3/4" conduit fittings are used.

Although the limits shown for each mounting option comply with the National Electrical Code (NEC), 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. NOTE: Surface backbox (SBB) in Figures C & D, is compatible with wiremold and conduit, mounting holes are for single-gang, double-gang, 4"sq., 3-1/2" & 4" octagon or round backboxes.

4" SQ. X 1-1/2" EXTENSION RING *

#8-32 SCREWS

SQUARE OR ROUND GRILLE

FLUSH MOUNTING

(NON-STROBE SPEAKER)

#6-19 SCREWS

4" SQ. X 2-1/8" BACKBOX

SPEAKER MOUNTING PLATE

4" SQ. X 1-1/2" EXTENSION RING *

#8-32 SCREWS

SQUARE OR ROUND GRILLE

FLUSH MOUNTING

(STROBE SPEAKER)

4" SQ. X 2-1/8" BACKBOX

#6-19 SCREWS

SPEAKER MOUNTING PLATE

MAXIMUM NUMBER OF CONDUCTORS

AWG #18 AWG #16 AWG #14 AWG#12

4 4 4 4

SURFACE BACKBOX (SBB)

#8-32 SCREWS

SQUARE GRILLE

AWG #18 AWG #16 AWG #14 AWG#12

SURFACE MOUNTING

(NON-STROBE SPEAKER)

#6-19 SCREWS

MAXIMUM NUMBER OF CONDUCTORS

4 4 4 4

SPEAKER MOUNTING PLATE

MAXIMUM NUMBER OF CONDUCTORS

AWG #18 AWG #16 AWG #14 AWG#12

8 8 8 8

SURFACE MOUNTING

#8-32

SCREWS

SQUARE GRILLE

SURFACE BACKBOX (SBB)

(STROBE SPEAKER)

#6-19 SCREWS

MAXIMUM NUMBER OF CONDUCTORS

AWG #18 AWG #16 AWG #14 AWG#12

8 8 8 8

NOTE: ET90 has a round grille. ET70 is shown.

FROM PRECEDING SPEAKER

FROM PRECEDING STROBE

APPLIANCE OR SYNC MODULE

OR FIRE ALARM

CONTROL PANEL (FACP)

Figure 1: Figure 2:

TO NEXT SPEAKER OR END OF LINE RESISTOR (EOLR)

TO NEXT APPLIANCE OR EOLR

• 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 integrity of circuit supervision as shown in Figure 2. The

+ STROBE - COM+

(OPTIONAL)

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

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

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

SPEAKER MOUNTING PLATE

P83567 M

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