Liebert Wiring to a Liebert Environmental Unit, LT300 to Liebert environmental units

Wiring to a Liebert Environmental Unit

The LT300 has two wires for connection to a Liebert environmental unit.

Note: This sensor should be connected only to a Liebert envi- ronmental unit.

Figure 1 LT300 to Liebert environmental units

LT300	Liebert Deluxe System/3, Challenger,
	Himod or Mini-Mate2 (8 ton)

Orange wire Brown wire

Environmental

unit

24 (24V)

51, 55 or 56

LT300 Liebert Mini-Mate2 (1 to 5 ton)

Orange wire Brown wire

Environmental

unit

TB1-1 (24V)

TB1-2 or TB1-3

You can wire up to six Liqui-tect 300 sensors to a single alarm point on a Liebert environmental unit. Sensors should be wired in parallel, as shown in Figure 2.

Figure 2 Multiple LT300s to Liebert environmental units

LT300 Liebert environmental unit

Orange wire Brown wire

Orange wire Brown wire

TB1-1 (24V) TB1-2 or TB1-3

Note: When multiple sensors are wired in this manner, you must dis- connect the sensors one at a time when an alarm occurs to determine which sensor is in alarm. The alarm will stop when the sensor causing the alarm is disconnected.

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