Installation
11 Liebert
®
eXM
™
2.5.2 Clearances
Provide at least the minimum clearance required by NEC on all sides of Liebert eXM, including 36"
(914mm) in front, to permit routine tightening of power terminations within the UPS and free
passage of personnel with the door fully opened. Depending on the floor anchoring system used, up to
5" (127mm) may be required in the rear of the UPS.
There are no ventilation grilles on the sides or back of the UPS.
Leave a minimum of 24 in. (610mm) between the top of the UPS frame and the ceiling to permit
adequate air circulation above the unit. Emerson recommends against using air conditioning or other
systems that blow air onto the top of the unit.
2.5.3 Floor Installation
If the Liebert eXM is to be placed on a raised floor, the UPS should be mounted on a pedestal that will
support the equipment point loading. Refer to the bottom view in Figure 1 to design this pedestal.
2.5.4 Cable Entry
Cables can enter the Liebert eXM from the top or bottom through removable metal plates.
Some plates have factory-punched holes and others are designed to allow the personnel to punch
holes for fitting and securing the conduit. Once the conduit holes are punched, these plates should be
reattached to the UPS. The conduit size and wiring method must be in accordance with all local,
regional and national codes and regulations, including NEC ANSI/NFPA 70.
The UPS must be accessible from the front to allow personnel to complete the cable connections and
make necessary adjustments.
Figure 2 Cable entry locations
NOTE
When installing the UPS, the customer must provide a disconnect with overcurrent protection
at the output of the UPS.
20.6"
(523mm)
1.5"
(38mm)
TOP
20.4"
(518mm)
28.3"
(519mm)
Casters
15.6"
(396mm)
1.6"
(41mm)
1.6"
(41mm)
4"
(102mm)
34.3"
(872mm)
BOTTOM
Top Power
Cable Entry
Bottom Power
Cable Entry
Top Control
Cable Entry
Bottom Control
Cable Entry
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