Service manual

DCB, DCFCB and DCFCTB Models

Installation

Siren Connections

The complete system wiring diagrams are shown in Figure 10 DCFCTB Wiring

Diagram, Figure 11 DCB Wiring Diagram, Figure 12 DCFCB Wiring Diagram. All

interconnections between the Siren and Control Unit are accomplished using three

wires. Two 2 AWG wires provide operating power to the siren motor. A single 12

AWG wire provides operating power to the rotator motor. There are two terminal

blocks located in the rotator housing of the siren that accept stripped wire, and a

terminal block and relays in the control box that accept 1/4 inch and 5/16 inch ring

terminals. These points provide convenient locations for making connections. Refer

to the Options section on page 74 for wiring of options.

Siren and Control Unit Interconnecting Wiring

1. Install a 1" user-supplied electrical conduit fitting in the bottom of the Control

Unit cabinet and in the bottom of the siren rotator housing.

2. Install 1" user-supplied electrical conduit between the conduit fitting in the

bottom of the siren rotator housing and the conduit fitting at the bottom of the

Control Unit cabinet.

3. Route the interconnecting wiring (user-supplied) from the siren rotator housing to

the Control Unit cabinet through the conduit.

4. Connect a red 12 AWG wire from terminal 1 of the three position terminal block

(TB1) in the rotator housing to the bottom open terminal of the rotator control

relay, K1, using a 1/4” ring terminal (user-supplied) at K1.

5. Connect a red 2 AWG wire from terminal 2 of the three position terminal block

(TB1) in the rotator housing to the open left side of the 200 Amp fuse

(148A147A) using a 1/4” ring terminal (user-supplied). Refer to Figure 10

DCFCTB Wiring Diagram, Figure 11 DCB Wiring Diagram, or Figure 12

DCFCB Wiring Diagram.

6. Connect a black 2 AWG wire to terminal 3 of the three position terminal block

(TB1) in the rotator housing. Run the black 2 AWG wire to a 5/16” backplane

ground stud in the control cabinet (labeled GND) using a 5/16” ring terminal

(user-supplied).

7. Ground the Siren and Control Unit to earth ground using separate continuous runs

of wire (do not “T” from another ground wire).

8. Tighten all connections securely to provide good electrical connections.