Simplex TrueAlert 4903 Installation Instructions Manual page 2

TrueAlert Ceiling-Mount A/V Wiring
Warning:
Make sure that all electrical power is disconnected before starting the installation.
Caution: Connect wiring to terminals as shown. Do not loop wires under terminals. Break wire runs to provide
supervision of connections. Do not bring conduit through the rear of the electrical box. Strip lead insulation to
a maximum of 3/8-inch.
1. At the electrical box, connect the wires to the CKT + and CKT - terminals at the rear of the A/V unit. Torque terminal
block screws 12-15 in/lbs. to ensure proper continuity. See Figure 2.
2. Ensure that correct polarity is maintained for each A/V unit.
3. SLC wiring must be twisted pair (TWP).
FROM TrueAlert-COMPATIBLE
SLC CONTROLLER
(SEE NOTES)
FROM TrueAlert-COMPATIBLE
SLC -
SLC CONTROLLER
SLC +
(SEE NOTES)
Notes:
1. Maximum 43 appliances per circuit. Maximum 30 ohms wire resistance between appliances. Refer to Field Wiring Diagrams of the driving
TrueAlert compatible Fire Alarm Control Panel for further instructions.
2. Notification appliances are rated per individual nameplate label.
3. Maintain correct polarity on terminal connections. Do not loop wires under terminals.
4. All TrueAlert SLC wiring connections are supervised and power-limited.
5. These appliances were only tested to the operating voltage limits of 17V to 31V. Do not operate these appliances outside these limits: doing so
may cause appliance to fail to operate as intended, and/or cause permanent damage to this equipment.
6. The TrueAlert A/V can only be operated through a 4009 TrueAlert Addressable Controller or TrueAlert-compatible FACP.
7. T-tapping is not allowed for Class A wiring.
4903
A/V
- +
CKT
SLC +
SLC - SLC -
SLC -
SLC+
Class A Wiring (See Notes)
4903
A/V
1 2 1
- CKT1 + -
SLC -
SLC +
Class B Wiring (See Notes)
Figure 2. TrueAlert Ceiling-Mount A/V Wiring
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CKT + INPUT
ADDRESS SWITCH
4903 4903
A/V A/V
- + -
CKT CKT
SLC +
SLC -
4903 4903
A/V A/V
2 1 2
CKT1 + - CKT1 +
SLC -
SLC +
2
CKT TERMINALS ACCEPT
2 WIRES: #12 – 18 AWG TWP
(SEE NOTE 3)
CKT - INPUT
(SW1)
+
SLC+
TO NEXT APPLIANCE OR
SLC -
TrueAlert-COMPATIBLE SLC
SLC +
CONTROLLER
(SEE NOTES)
4903
A/V
1 2
- CKT1 +
SLC -
SLC +