Emerson AC4 user manual 3.1Wiring Specifications, 3.0WIRING AND CONNECTIONS, Wiring specifications

Wiring and Connections

3.0WIRING AND CONNECTIONS

! WARNING

Risk of electric shock. Can cause property damage, injury and death.

Switch Off electric power to the Liebert AC4 before installing any wiring to the unit or changing input or output connections. The Power On/Off switch is in the top left corner of the unit.

3.1Wiring Specifications

Input and output connections to the Liebert AC4 may be made in any order—it is not necessary, for example, to make all input connections before making any output connections. Use copper conductors only for all wiring.

Table 4	Wiring specifications
Connection		Supported Wire Type	Maximum Wire Length			Rating
Digital		18-22 AWG Stranded & Unshielded
		18 AWG* (recommended)		750 ft. (225m)		Dry Contact
Input		Non Plenum - Belden 9740				(24VDC, 10 mA)
		Plenum - Belden 89740
		18-22 AWG Stranded & Unshielded	18 AWG*	20 AWG	22 AWG
Digital			(recommended)
		18 AWG* (recommended)				24VAC @3A
			@3A 50 ft. (15m)	@3A 40 ft. (12m)	@3A 25 ft. (7m)
Output		Non Plenum - Belden 9740
		Plenum - Belden 89740	@2A 100 ft. (30m)	@2A 60 ft. (18m)	@2A 35 ft. (10m)
			@1A 200 ft. (60m)	@1A 100 ft. (30m)	@1A 75 ft. (23m)
		18-22 AWG Stranded & Unshielded	18 AWG*	20 AWG	22 AWG
Common			(recommended)
Alarm		18 AWG* (recommended)				24VAC @3A
			@3A 50 ft. (15m)	@3A 40 ft. (12m)	@3A 25 ft. (7m)
		Non Plenum - Belden 9740
Output
		Plenum - Belden 89740	@2A 100 ft. (30m)	@2A 60 ft. (18m)	@2A 35 ft. (10m)
			@1A 200 ft. (60m)	@1A 100 ft. (30m)	@1A 75 ft. (23m)
Communication		Null Modem Cable		50 ft. (15m)		N/A
RS232
24VAC Power		18-22 AWG Stranded & Shielded
		18 AWG* (recommended)
Connection				150 ft. (45m)		24VAC @1.3A
		Non Plenum - Belden 8770
(TB7)
		Plenum - Belden 88770
* Recommended

Liebert® AC4™ 12