Emerson AC4 Manuale Utente

After determining where to place the unit, check to ensure that you have all the hardware required to 

install the panel on the surface of a wall. Obtain the needed tools and material.

• Electric drill (if surface is too hard to drive screws without pilot holes)
• Screwdriver
• Marker to denote layout of holes
• Four screws, each #10

1. Mark the wall for mounting holes, using the back of the unit as a template (see Figure 5).
2. Drill holes, if required, to install the four #10 screws that will secure the Liebert AC4 to the wall. 

Clean up the debris.

3. If the wall material is not strong enough to hold the screws securely, use wall anchors.
4. Install the top two screws—the screw heads must be small enough to slip through the larger, 

bottom portion of the pear-shaped mounting slot in the Liebert AC4 (see inset in Figure 5). The 

screws must also be large enough to extend over the edges of the top of the mounting slot.

5. Hang the Liebert AC4 on the screws, letting the panel slip down until the screws are in the 

smaller, upper portion of the slot.

6. Tighten the screws until they are snug.
7. Insert the remaining two screws in the bottom holes on the back of the panel and tighten.

NOTE
Removing the conduit knockouts before mounting the Liebert AC4 on the wall will ease 

Risk of electric shock. Can cause property damage, injury and death.
Check building plans and other relevant documents to determine whether mounting the 

Liebert AC4 at the selected location might cause cutting or otherwise damaging electrical or 

communication wiring or pipes.