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1.4 Outside Enclosure Overview
The Liebert AC4 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 AC4 enclosure—external features
The enclosure must be secured to a wall, either flush-mounted or recessed in the wall, as described in
Installation
on page 15. Knockouts and access slots on the top and bottom allow easy connection of wires
and cables (see
Wiring and Connections
on page 21) with either mounting type.
Figure 1.2 Liebert AC4 enclosure—internal features
Vertiv | Liebert® AC4 User Manual |
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