2
579-1190 Installation instructions
Wiring instructions:
1. At the electrical box, connect the building wiring to the CKT + and CKT - terminals on the backplate.
2. To ensure proper continuity, use a torque wrench to tighten the terminal block screws to 12-15 inch-pounds.
3. Ensure that the correct polarity is maintained for each strobe unit.
4. Signal Line Circuit (SLC) wiring must be twisted pair (TWP). CKT Terminals accept 2 Wires: 12-18 American wire gauge (AWG)
TWP.
Wiring notes:
WARNING: Make sure that all power is disconnected before starting the installation.
IMPORTANT:
Do not bring the conduit through the rear of the electrical box. Strip the lead insulation to 7/16 inch
maximum.
Figure 2. Wiring instructions
1. Assign a maximum of 127 active appliances to a circuit. Assign a
maximum of 63 active strobe appliances to a powered circuit. The
maximum wire resistance between appliances is 26 ohms. Refer to
the Field Wiring Diagrams of the driving compatible fire alarm
control panel for further instructions.
2. Notification appliances are rated using an individual module label.
3. Maintain the correct polarity on the terminal connections.
4. Terminals 1 through 6 each accommodate two wires, one wire going
in and one wire going out to the next appliance.
5. These appliances are rated to the operating voltage limits of 23-30 VDC. The
appliance can fail to operate as intended, and can cause permanent damage to
this equipment if it operates outside of these limits.
6. Only operate the TrueAlert IDNAC S/V and SO using a compatible power supply
and amplifier.
7. T-tapping is not permitted for Class A wiring.
8. TrueAlert SLC wiring connections are supervised and power-limited.
SO Appliance back side.
Terminal 3: ‘NAC -’
Terminal 4: ‘NAC +’
Terminal 1: ‘Audio +’
Terminal 2: ‘Audio -’
Class A wiring, see notes.
From amplifier
Audio +/-.
From compatible SLC
controller, see notes.
12
CKT CKT
S/V
56
Audio -
Audio +
To the next
appliance
or compatible SLC
controller,
see notes.
S/V Appliance back side
Terminal 5: ‘NAC -’
Terminal 6: ‘NAC +’
Terminal 1: ‘Audio +’
Terminal 2: ‘Audio -’
Audio Audio
12
CKT CKT
SO
34
12
CKT
CKT
SO
-
+
Audio
-
Audio
-
Audio
+
Audio
+
34
SLC +
SLC +
SLC -SLC -
SLC +
SLC -
SLC -
SLC +
12
CKT CKT
S/V
56
Audio
Audio
12
CKT CKT
SO
34
-
+
Audio
-
Audio
+
SLC +
SLC -
SLC +
SLC -
12
CKT CKT
S/V
56
Audio
Audio
12
CKT CKT
SO
34
-
+
Audio
-
Audio
+
SLC +SLC -
SLC +SLC -
Class B wiring, see notes.
From amplifier
Audio +/-.
From compatible SLC
controller, see notes.
(T-tapping example)
Note: NAC and SLC are equivalent terms in this figure.
Audio -
Audio +
SLC -
SLC +
Audio -
Audio +
SLC -
SLC +
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