Service manual

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76
DCB, DCFCB and DCFCTB Models
lock ring. Put a 1” plastic bushing over the exposed thread end on the 1”
connector.
7. Cut a section of 1” Seal-Tight, 7” in length. This provides raceway for the
48 VDC secondary and for control cabinet 120 VAC input.
8. Cut a section of 1/2” Seal-Tight 18” in length. This provides A/C input voltage
from the AC disconnect to the transformer. If the AC disconnect does not have
120VAC available, the X4 and X5 taps in the 2001TRB may be used to provide
AC voltage to the control cabinet. In this case, run the Seal-Tight between the
2001TRB and the siren controller.
Transformer Wiring
Transformer Primary
(2 ea.) 10 AWG, CU, stranded, black 40‖ in length.
Rectifier Output
(1 ea.) 2 AWG, CU, Black, 30‖ in length–48 VDC Negative.
(1 ea.) 2 AWG, CU, Red, 40‖ in length–48V DC Positive.
Control Cabinet
(1 ea.) 14 AWG, CU, stranded, black 60‖ in length–120 VAC Line
(1 ea.) 14 AWG, CU, stranded, white 60‖ in length–Neutral
1. The (2 ea.) 40” black 10 AWG lines provide 208/220/240 VAC for transformer
primary input.
2. The 60” black, and the 60” white provide the AC input to the control cabinet.
These wires will pass through the transformer as a raceway then be routed into
the control cabinet unless the X4 and X5 taps are used in the 2001TRB (refer to
Figure 9 Typical DCFCB or DCFCTB with 2001TRB Installation Drawing,
Figure 10 DCFCTB Wiring Diagram, Figure 11 DCB Wiring Diagram, or Figure
12 DCFCB Wiring Diagram for wiring details).
3. The 30” black 2-AWG line provides the 48 VDC negative to the DCB control
cabinet. It connects the terminal block in the 2001TRB labeled “-“ and the 5/16”
ground stud on the backplane of the siren controller.
4. The 40” red 2 AWG line provides 48 VDC positive voltage to the DCB control
cabinet. It connects to the terminal block in the 2001TRB labeled “+” and to the
labeled terminal (#3) at K3.
AC Line Wire Terminations
240 VAC operation
Service disconnect
Transformer
Transformer Primary: 2 ea. #10
black wires
L1
H1
L2
H4