6.2.4 Wire the EC Fans
WARNING! Risk of cut insulation and damaged wires. Can cause short circuits, overheated
wiring, smoke, fire, activation of fire suppression systems and EMS personnel, equipment
damage, loss of power to fans, injury or death. Verify that all wiring connections are tight and
that all wiring is contained within the junction box prior to closing and securing the cover.
Black-sleeved harness contains fan-control wires. Grey-sleeved harness contains motor high-volt connection.
1. Refer to Figure 7.14 below, Figure 7.15 onthe facing page, and Figure 7.16 onpage60, to route the wire
harnesses and insert them into the indicated openings onthe junctionboxes.
• You may need to remove existing wire ties that hold the harness to the fancage.
NOTE: Do not route the wiring over the handles on the EC-fan assembly.
2. Connect the wires inside the junction box:
• Between fan1 and 2 on2- and 3-fanunits, refer toFigure 7.15 onthe facing page.
• Onsingle-fanor fan 3 of 3-fanunits, refer toFigure 7.16 on page60.
3. Use provided wire ties tosecure the wire harnesses tothe fancage to prevent harness movement whenfans are
running.
Figure 7.14 EC-fan junction boxes
Item Description
1 Junctionbox betweenfans1 and2 on2-and3-fanunit
2 Junctionbox for 1-or3-fanunit
Vertiv | Liebert® CW™Installer/User Guide
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