Vertiv Liebert AC8 - Transformer Module; Available Alarms; Outside Enclosure Overview

1.3 Transformer Module
A Transformer Module converts 115VAC or 230VAC to 24VAC.
1.4 Available Alarms
The alarms available with the Liebert AC8 are:
• Discrete input alarm
(for each digital input)
• High setpoint
• Low setpoint
• Loss of power
• Low battery
• Check battery
• Battery unplugged
• Internal modem fault
• No standby available
• Standby device
failed
• No restart available
• Emergency power
alarm
1.5 Outside Enclosure Overview
The Liebert AC8 controller board comes in an enclosure that is 2-3/4" deep and has a built-in liquid
crystal display (LCD) and a key lock, as shown in Figure 1.1 below. The enclosure is made of metal to
accommodate secure conduit fittings and protect components against environmental debris.
Figure 1.1 Liebert AC8 enclosure—external features
The enclosure houses the controller board and Transformer Module, as shown in Figure 1.2 on the facing
page.
The enclosure must be secured to a wall, either flush-mounted or recessed in the wall, as described in
Installation on page11. Knockouts and access slots on the top and bottom allow easy connection of wires
and cables (see 3.0- Wiring and Connections) with either mounting type.
Vertiv | Liebert® AC8 User Manual | 2