Refer to Figure i on Page iv in the beginning of this manual for a typical system configuration. Refer to the following drawings (including notes) for details of wire terminations and switch settings for inputs and outputs used at your installation.
Call Liebert Environmental Support at 1-800-543-2778if you require any assistance for the installation or operation of your RAC2-8 Autochangeover controller.
Select a location for the RAC2-8 that is convenient for both operation and cable routing. If the application at your installation is critical, the location should also provide limited access to the controller.
The RAC2-8 enclosure is surface mounted using four 1/4 in. bolts. The power cord is factory wired. Note that the use of a 220 VAC 50/60 Hz power source must be selected when the unit is ordered. This is not a field selectable option. Two EIA-232 ports are available at the bottom of the enclosure. All other customer cables enter through knockouts at the bottom of the enclosure.
The RAC2-8 includes a lithium backup battery for control memory. The battery is disconnected from the system for storage and shipment. Set DIP switch 2-8 to ON to connect the battery.
The RAC2-8 may show an alarm from a Liebert DataMate, mini- MATE, and/or mini-MATE Plus unit when an alarm condition does not, in fact, exist. If you are using or plan to use the RAC2-8 with the Liebert DataMate, mini-MATE, and/or mini-MATE Plus, remove the
C5 capacitor at the K5 common alarm relay to avoid false alarms:
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