Emerson Liebert DS Precision Cooling System 28-105kW User Manual

The damper wiring is coiled and attached to the interior of the Liebert Air Economizer. The locking 

connectors must be snapped into similar connectors in the primary cooling unit for the dampers to 

operate. The wiring must also be secured to the Liebert Air Economizer’s frame to protect it.

Turn Off all power to the indoor cooling unit before connecting cables or wires. Failure to do so 

may damage this equipment.

To connect the damper wiring:
1. Locate the damper wiring inside the Liebert Air Economizer—see Figure 5.

The wires are coiled and attached to the Liebert Air Economizer frame.

2. The wires have snap connectors that mate to wires secured to the cooling unit’s frame.

DETAIL A

DPN001449
Pg. 01, REV2

Return Air
Damper Motor
Connection
(Top Motor)

Outdoor Air
Damper Motor
Connection
(Bottom Motor)

Provide strain relief using
cable tie anchors as shown.
Confirm that the ties are
tightened to secure the
cable.

Cable Ties / Anchors

Route cable through
the loose cable tie on
the bottom plate of the
Liebert Air Economizer.
Tighten to provide strain relief.