Installation guide

Unit Installation NetVanta 6240/6250 Series HIG
30 Copyright © 2013 ADTRAN, Inc. 61700202G1-34B
Wall Mounting the BBU
Figure 7 shows the BBU (P/N 1175044L1) mounting dimensions for the NetVanta 6240/6250 Series.
Figure 7. Wall Mounting the BBU
Install the BBU as follows:
Instructions for Wall Mounting the BBU
Step Action
1 Decide on a location for the BBU, keeping in mind that the cable plugs must be able to reach
their designated sockets in the NetVanta unit.
2 Prepare the mounting surface by attaching a board (typically plywood, 3/4-inch to 1-inch thick)
to a wall stud using #6 to #10 (2.5-inch or greater in length) wood screws.
Important! Mounting to a stud ensures stability. Using sheetrock anchors may not provide
sufficient long-term stability.
3 Ensuring a plumb measurement, mark where the pilot holes are to be drilled according to the
dimensions given in Figure 7 on page 30.
4 Drill all four pilot holes using a size 1/16-inch drill bit.
5 Screw two #10 x 3/4-inch pan-head screws into the top two previously drilled holes. Let the
head of each screw protrude 1/16 inch from the plywood to engage the keyhole slot.
Do not let the weight of the BBU rest on the two keyhole screws. Maintain support
until the lower two screws are fully inserted.
6 With an assistant, lift the BBU and position to engage the screw heads into the top two
keyholes. Allow the unit to slide down until the slot end rests against the screws.
7 Insert the two lower screws through the tabs and tighten securely.
8 Use cable ties as appropriate. The battery connection from the BBU should be directly
connected to the BATT port on the rear of the chassis.