Emerson Liebert ICOM-DO User Manual download pdf (Page 6)

DISCONTINUED

PROD UC T

Installation

2.0 INSTALLATION

As a retrofit kit, the Liebert iCOM-DO is secured to a metal

mounting plate. The mounting plate is then attached to a flat

metal surface in the extra low voltage (ELV) section of the Lie-

bert unit.

If the Liebert iCOM-DO was ordered as a factory-installed

option, proceed to 3.0 - Configuration.

2.1 Retrofit Installation

Position the Liebert iCOM-DO in the low voltage/control cav-

ity of the Liebert Precision Cooling unit. Use three #8 x 3/8"

sheet metal screws to attach the mounting plate to the Liebert

Precision Cooling unit.

2.1.1 System Wiring—All Liebert iCOM Controllers

Two wiring harnesses are included with the retrofit kit, one

for the power connection and one for CAN communication.

Refer to Figure 2 for details on routing the wiring.

Power Connection

The harness supplied with the Liebert iCOM-DO interface

card (P/N 159084G1) is equipped with three connectors, one at

either end of the harness and one in the middle. The harness

taps power from the 24VAC input to the control board of the

Liebert Precision Cooling unit.

To connect this power to the Liebert iCOM-DO:

1. Locate the connector containing the two red wires plugged

into P43 on the control board and unplug it. Reconnect it

to the connector in the middle of the supplied harness.

2. Plug one end of this harness into P43 on the control board

and the other end into TB100 of the Liebert iCOM-DO.

NOTICE

Risk of improper wiring. Can cause equipment damage.

Do not tap power from the auxiliary 24VAC Terminals

T5/G5 on the Liebert iCOM. Powering from this source

might damage the controller and interface card.

Communication Connection

The second wiring harness provided (P/N 197975G1) has a

connector fitted at either end and is the communications con-

nection between the unit microprocessor and the Liebert

iCOM-DO.

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Emerson Liebert ICOM-DO User Manual Page 6