Use this mounting procedure to position the field wires in the backbox so that they use minimum space and produce minimum stress on the
product. This is especially important for stiff, heavy gauge wires and wires with thick insulation or sheathing.
1.
Connect 4 field wires to the ET70WP-2475W terminal block (polarity must be observed).
2.
Bend the 4 field wires up 90
°
at the connection to the terminal block.
3.
Carefully push the 4 field wires into the backbox by hand.
4.
Carefully press the ET70WP-2475W to the backbox, verifying that the ET70WP-2475W is in contact with the gasket all the way around.
It should not be resting on the lip of the backbox.
5.
Screw the ET70WP-2475W to the backbox using the #8-18 X 1-3/4” screws supplied.
6.
The knock-out opening on the backbox is sized for a ½” conduit and matching connector. Be sure that a proper watertight conduit fitting
is used to connect the backbox for outdoor/severe environment applications.
MOUNTING NOTES:
WARNING: THIS UNIT MUST BE WALL MOUNTED ON A FLAT SURFACE, SO THAT THE WALL COVERS THE
ENTIRE BACK SURFACE, AND WITH THE DRAIN HOLES POINTED DOWN TOWARD THE GROUND AND "TOP" FACING
UP. 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.
CAUTION:
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.
1.
Conduit entrances to the backbox should be selected to provide sufficient wiring clearance for the installed product.
2.
When terminating field wires, do not use more lead length than required. Excess lead length could result in insufficient wiring space for
the signaling appliance.
3. Do not pass additional wires (used for other than the signaling appliance) through the backbox. Such additional wires could result in
insufficient wiring space for the signaling appliance.
CAUTION:
Always operate audio amplifiers and speakers within their specified ratings. Excessive input may distort sound quality and
may damage audio equipment. Do not 130% of speaker input voltage. 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.
WARNING: WHEN INSTALLING STROBES IN AN OPEN OFFICE OR OTHER AREAS CONTAINING PARTITIONS OR
OTHER VIEWING OBSTRUCTIONS, SPECIAL ATTENTION SHOULD BE GIVEN TO THE LOCATION OF THE STROBES SO
THAT THEIR OPERATING EFFECT CAN BE SEEN BY ALL INTENDED VIEWERS, WITH THE INTENSITY, NUMBER, AND
TYPE OF STROBES BEING SUFFICIENT TO MAKE SURE THAT THE INTENDED VIEWER IS ALERTED BY PROPER
ILLUMINATION. FAILURE TO DO SO COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO
YOU AND/OR OTHERS.
WARNING: A SMALL POSSIBILITY EXISTS THAT THE USE OF MULTIPLE STROBES WITHIN A PERSON'S FIELD OF
VIEW, UNDER CERTAIN CIRCUMSTANCES, MIGHT INDUCE A PHOTO-SENSITIVE RESPONSE IN PERSONS WITH
EPILEPSY. STROBE REFLECTIONS IN A GLASS OR MIRRORED SURFACE MIGHT ALSO INDUCE SUCH A RESPONSE.
TO MINIMIZE THIS POSSIBLE HAZARD, COOPER WHEELOCK STRONGLY RECOMMENDS THAT THE STROBES
INSTALLED SHOULD NOT PRESENT A COMPOSITE FLASH RATE IN THE FIELD OF VIEW WHICH EXCEEDS FIVE (5)
Hz AT THE OPERATING VOLTAGE OF THE STROBES. COOPER WHEELOCK ALSO STRONGLY RECOMMENDS THAT
THE INTENSITY AND COMPOSITE FLASH RATE OF INSTALLED STROBES COMPLY WITH LEVELS ESTABLISHED BY
APPLICABLE LAWS, STANDARDS, REGULATIONS, CODES AND GUIDELINES.
NOTE:
NFPA 72/ANSI 117.1 conform to ADAAG Equivalent Facilitation Guidelines in using fewer, higher intensity strobes within the same
protected area.
If this appliance is required to produce a distinctive three-pulse Temporal Pattern Fire Alarm Evacuation Signal (for total evacuation) in
accordance with NFPA 72, the appliance must be used with a fire alarm control unit that can generate the temporal pattern signal. Refer to
manufacturer’s installation manual for details.
CAUTION:
Check the installation instructions of the manufacturers of other equipment used in the system for any guidelines or
restrictions on wiring and/or locating Notification Appliance Circuits (NAC) and notification appliances. Some system communication
circuits and/or audio circuits, for example, may require special precautions to assure immunity from electrical noise (e.g. audio crosstalk).
P84646 D
Sheet 4 of 5
