Edwards Signaling 889D-AW User Manual

Installation Instructions for Explosion-Proof

AdaptahornÆ Catalog Numbers 888D-N5 and 889D-AW

DESCRIPTION

Edwards explosion-proof Adaptahorn signals, catalog numbers
888D-N5 and 889D-AW, are heavy-duty vibrating horns in­tended for use where distinctive audible signals are required in
a hazardous location having high ambient noise levels.

These horns include a series diode and are suitable for use in
fire alarm systems and other applications requiring electrical
supervision of signal circuit installation wiring.

The 888D-N5 is ac-powered and the 889D-AW is dc-powered.
They are UL listed for use in Class I, Groups B, C, and D; Class
II, Groups E, F, and G; and Class III locations, for both Divi­sions 1 and 2.

ELECTRICAL SPECIFICATIONS

Catalog Rated Alarm dBA Rating
Number Voltage Current at 10 ft.

88D-N5 120V ac 0.165 A 100*
889D-AW 20-24V dc 0.16 A 100*

*Sound level rating as measured in an anechoic chamber on an
"A" weighted scale.

securing the horn to mounting surface.

The horn may be mounted to any solid surface. Install the unit
as follows:

1. See Figure 1. Remove the cover from the conduit outlet
box. Feed the two power supply wires from control panel
or previous signal and the two wires to next signal or end­of-line device through conduit into the outlet box. Also,
feed the horn's three power connection wires through the
nipple, which connects the horn to the outlet box, into the
box. Secure the horn and conduit to the outlet box.

2. With the horn placed against mounting surface, mark
mounting hole positions for fasteners as per Figure 1. Install
fasteners with washers through mounting brackets and
secure unit to surface.

3. Make required power supply wiring connection and make
wiring connection to next signal or end-of-line device in
outlet box. For 888D-N5, see Figure 2. For 889D-AW, see
Figure 3.

CAUTION

Do not apply power to the horn until installation has
been completed and cover has been secured on outlet
box.

INSTALLATION

The following items (not supplied) are required for installation
of the horn:

• 3/4" conduit to contain power supply wires.

• One explosion proof conduit outlet box suitable for use in

the hazardous location.

• One 3/4-14 National Pipe Taper (NPT) nipple.

• T w o fasteners up to 3/8" diameter and washers suitable for

4. Apply power to the fire alarm control panel. Initiate an alarm
to activate the horn and verify that it sounds. Then reset the
panel and verify that the horn silences.

MAINTENANCE AND TEST

Examine the horn annually for accumulation of dirt and clean if
necessary.

T est the horn annually or at the intervals required by applicable
fire regulations.

FARMINGTON, CT 203-678-0410 FAX. [phone]

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P-047550-0395 ISSUE 3

© 1994

Figure 1. Signal Mounting Details

Figure 2. 888D-N5 - Fire alarm system use or other
applications requiring a supervised signaling circuit.

P-047550-0395 ISSUE 3

Figure 3. 889D-AW - Fire alarm system use or other
applications requiring a supervised signaling circuit.