Andover Controls DCX 250, Installation Manual

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Hardware Installation
DCX 250 Installation Guide 9
Connecting the AC Power Cable
to the Power Supply
If you ordered the DCX 250 in its own cabinet (to be placed on the In-
finet outside the Infinity CX 9000), the DCX 250 has its own power
supply. So you need to connect the AC power cable.
Warning
Be sure the AC power cable is not connected to an electrical power
source while you are wiring the controller, or you could receive an
electrical shock that is life-threatening.
Note
If the installation requires the secondary of the 24 V transformer to be
grounded, always connect the "neutral" to ground and only ground it at
the transformer.
To connect the AC power cable, proceed as follows:
1. Lift off the front display panel on the DCX 250.
Figure 4 shows the inside of the DCX 250 controller.
Notice the board now directly in front of you is the power supply.
Look to the upper left corner for the AC power connection. You
must wire the AC power to the three screws on the upper left side of
the power supply.
2. Thread the AC power cable through the cutout in the top of the
DCX 250 cabinet.
Caution
Be sure to connect all three wires, HOT, NEUTRAL, and GROUND.
Otherwise, the controller could malfunction.
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