Edwards Signaling 5523MD-AW User Manual

5522MD-AW and 5523MD-AW Duotronic
Signals for Use in Hazardous Locations
Installation Sheet

The wiring must be of adequate size to prevent excessive
voltage drop that would affect signal performance. To
determine the minimum wire size required:

a. Calculate the value Rmax. as follows:

R

max.

=7/Number of Signals

b. Determine the total length of the signaling circuit

wiring

Description and operation

Edwards Duotronic signals, catalog numbers 5522MD-AW and
5523MD-AW, are high decibel, diode-polarized signaling
appliances intended for indoor use in both fire alarm systems
and systems requiring electrical supervision of signaling circuit
field wiring. The 5522MD-AW are horns and the 5523MD-AW
are sirens. In fire alarm service applications they meet the
75 dBA minimum at 10 feet.

The 5522MD-AW and 5523MD-AW are UL listed for use in
Class I, Groups B, C and D locations, for both Divisions 1 and

2. The flange bolts of all series of the signals are sealed in
accordance with UL requirements to prevent disassembly and
tampering.

Installation

1. Choose Mounting Locations. The horn or siren can be
mounted. to any solid surface. Ensure that mounting
location provides adequate clearance to enable
adjustment of the signal to the desired position after
mounting. The signal position can be adjusted within an
approximate 180-degree range vertically or horizontally
depending on mounting of bracket.

2. Install Unit. Mount unit in selected location using its
mounting bracket and three bolts (not supplied). See
Figure 1 for size and location of mounting holes.

3. Signal Direction Adjustment. To adjust signal direction,
loosen the two bolts shown in Figure 1. Rotate the signal
to the desired position and then tighten the bolts.

WARNING: Do not apply power to the unit until

installation is completed and housing cover and outlet
box cover are secured.

c. Select a wire size having a res istance va lue that is

less than the value Rmax for the length of signaling
circuit wiring required. Approximate resistance values
for 1,000 feet of several commonly used wire sizes
are as follows (AWG/ohms) 12/2.0, 14/3.2, 16/5.0,
18/8.0.

5. Install Wires. See Figure 2. Remove cover from the
conduit outlet box (not supplied). Note that the outlet box
must be suitable for use in the hazardous location. Feed
the two power supply wires through the 1/2" NPT conduit
(not supplied) into the outlet box. Also, feed the signal's
two power connection wires either directly into the outlet
box or, if desired, through a 1/2" flexible type coupling (not
supplied) and then into box. Secure outlet box to signal's
1/2" sealed nipple either directly or by flexible coupling,
and secure conduit to outlet box.

6. Connect Wires. See Figure 2. Make power supply wiring
connections and make wiring connections to next signal or
end-of-line device in outlet box. Observe polarity of signal
wires.

Note: When making wiring connections to next signal or
end-of-line device, ensure that circuit wiring is cut to form
separate incoming and outgoing wires at junctions with
signal leads for proper supervision of connections.

Secure cover on outlet box.

7. Check Signal Operation. Apply power to the system
control panel. Initiate an alarm to activate the signal and
verify that it sounds. Then reset the panel and verify that
the signal silences.

4. Determine Signaling Circuit Wire Size. The signaling
circuit

© 2013 UTC Fire & Security. All rights reserved. 1 / 2 P/N 3100797 • REV 02 • REB 21FEB13

Maintenance and test

Examine the unit semi-annually for external accumulation of
dirt. Clean if necessary. Test the signal monthly or at the
intervals required by applicable regulations and codes.

Figure 1: Signal dimensions and mounting deta ils

Figure 2: Wiring installation and connections

Specifications

Mechanical specifications

Electrical specifications

Input power
Catalog no. Voltage Current (A)

5522MD-AW 24V DC 0.950
5523MD-AW 24V DC 0.950

Weight ..................................................... 17.5 Pounds (7.9 kg)

Contact information

For contact information, see www.edwardssignaling.com

2 / 2 P/N 3100797 • REV 02 • REB 21FEB13