Electrical Connections
20
1. Route the electrical service conduit through the hole provided in the top or front of the XDO. The
electrical connections are on the front of the inside compartment of the XDO on the internal
mounting brackets, which, in addition to serving as electrical terminal blocks, also are used to
secure internal piping.
Looking at the XDO from the front, the knockout for the high-voltage wiring and the high-voltage
terminal block will be on the left (see
); the low-voltage locations will be on the right.
(The low-voltage connection is present only if the XDO is equipped with the optional condensation
detection system.)
2. Open the hinged, removable fan tray (see
5.1 - Opening Hinged, Removable Fan Tray
3. Remove two screws to remove the protective cover from the high-voltage terminal block (see
4. Connect the high-voltage power supply wires and the earth ground wire to the XDO as shown in
.The black wire in the power supply line connects to L1 on the terminal block and the
white wire connects to L2 on the terminal block. The earth (ground) wire connects to the earth
(ground) location above the L1 and L2 connectors.
5. Reinstall the cover over the high-voltage terminal block.
Figure 20 High-voltage terminal block location and connection locations
High-Voltage Cover
High-Voltage
Terminal Block
Earth-Ground
Location
High-voltage and low-voltage
terminal blocks viewed from
the interior of the XDO
Inside detail view with high-voltage cover removed.
For clarity, top is not shown.
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