These mounting instructions describe the steps for mounting the Cisco USC 5030 chassis in several configurations, including on a suspended ceiling, on a hard ceiling or wall, on an electrical or network box, and above a suspended ceiling. The instructions are also applicable to the Cisco USC 6732, which can be installed on a suspended ceiling or hard ceiling. The Cisco USC 6732 cannot be installed vertically on a wall.
Mounting hardware for the small cell chassis consists of brackets, which connect to the bottom of the chassis, and ceiling grid clips, which connect the bracket to a suspended ceiling. The bracket that you need depends on the mounting location for the chassis. The ceiling grid clip that you need depends on the type of suspended ceiling where you need to install the chassis. You don’t need ceiling grid clips if you are mounting the chassis to a hard-surface ceiling or a wall.
The universal bracket (AIR-AP-BRACKET-2) is versatile (it works with electrical boxes, can be used for wall mounting, and adapts to ceiling installations), but leaves a larger gap between the mounting surface and the chassis than the low-profile bracket. The larger gap is necessary in some locations because it allows space for cable routing. Figure 1 shows the universal bracket installed on a chassis.
Figure 1 Universal Bracket Installed on a Chassis
Ceiling Grid Clips
You use a ceiling grid clip to mount a chassis on a suspended ceiling. The ceiling grid clip that you need depends on the ceiling tiles on your ceiling. There are two types of ceiling grid clips:
Ceiling Grid Clip, Recessed (AIR-AP-T-RAIL-R)—If your ceiling tiles hang below the ceiling grid, this clip provides the best fit between the AP and the ceiling.
Ceiling Grid Clip, Flush (AIR-AP-T-RAIL-F)—If your ceiling tiles are flush with the ceiling grid, this clip provides a snug fit between the AP and the ceiling.
Additional Adapters for Channel and Beam Ceiling Rails
The most common type of ceiling rail (the supports for the ceiling tiles) is the T-rail. You can attach a ceiling grid clip directly to a T-rail ceiling rail. However, other types of ceiling rails, such as channel rails and beam rails, require an additional adapter clip (AIR-CHNL-ADAPTER). You need two adapter clips for each chassis. Setscrews on the clips hold them securely on the ceiling rail.
Figure 3 shows the three types of ceiling rails: T-rail, channel, and beam. Figure 4 shows a chassis installed with mounting bracket, ceiling grid clip, and adapter clips.
Figure 3 T-Rail, Channel, and Beam Ceiling Rail Types
Figure 4 Adapter Clips Installed with Ceiling Grid Clips
Mounting a Chassis Below a Suspended Ceiling
Follow these steps to mount the chassis below a standard or recessed suspended ceiling. Figure 5 shows a chassis mounted on a T-rail ceiling rail using a ceiling grid clip.
Figure 5 Suspended Ceiling Mounting Details
Chassis mounting keyhole
Chassis cable access cover
Ceiling grid clip
Follow these steps to mount the chassis below a suspended ceiling.
Step 1 Decide where you want to mount the chassis on your suspended ceiling.
Step 2 Open the ceiling grid clip completely.
Step 3 Place the ceiling grid clip over the T-rail and close it to the appropriate detent (A, B, or C).
Step 4 Use a screwdriver to tighten the two ceiling grid clip locking screws to prevent the clip from sliding along the T-rail.
Step 5 Observe the ceiling grid clip width detent letter (A, B, or C) that corresponds to the T-rail width.
Step 6 Align the corresponding holes (A, B, or C) on the mounting bracket over the mounting holes on the ceiling grid clip.
Step 7 Hold the mounting bracket and insert a 6-32 x 1/4 in. screw into each of the four corresponding holes (A, B, or C) and tighten.
Step 8 If necessary, drill or cut a cable access hole in the ceiling tile large enough for the Ethernet and power cables. Pull the cables through the access hole until you have about 1 foot of cable protruding from the hole.
Step 9 (Optional) Use the ground screw to ground the chassis to a suitable building ground. See the “Grounding a Chassis” section for general grounding instructions.
Step 10 Connect the Ethernet and power cables to the chassis.
Step 11 Align the chassis feet over the keyhole mounting slots on the mounting bracket. If you created a hole for the cables, make sure the chassis is positioned so that the cables reach their respective ports.
Step 12 Gently slide the chassis onto the mounting bracket until it clicks into place.
Mounting a Chassis on a Hard Ceiling or a Wall
This procedure describes the steps required to mount the chassis on a ceiling constructed of 3/4-in (19.05-mm) or thicker plywood using #8 fasteners using the universal mounting bracket (AIR-AP-BRACKET-2).
Follow these steps to mount the chassis on a solid ceiling or wall.
Step 1 Use the mounting bracket as a template to mark the locations of the mounting holes on the bracket. Figure 6 shows details of the mounting bracket.
Be sure to mark all four locations. To ensure a safe and secure installation, make sure you are using adequate fasteners and mount the chassis using no less than four fasteners.
Mise en garde: Assurez-vous de marquer les quatre emplacements. Pour garantir une installation sûre, utilisez des attaches adéquates et installez le châssis sans omettre une seule des quatre attaches.
Do not use plastic wall anchors or the keyhole slots on the mounting bracket for ceiling installations. When mounting the chassis on a hard ceiling, use four fasteners capable of maintaining a minimum pullout force of 20 lbs (9 kg).
Mise en garde: Dans le cas d'une 'installation au plafond, n'utilisez pas de dispositifs d'ancrage au mur en plastique ni les encoches en trou de serrure du support de montage. Pour installer le châssis sur un plafond dur, vous devez utiliser quatre attaches capables de soutenir une force d'arrachement minimale de 9 kg (20 livres).
Figure 6 Universal Mounting Bracket Details
Bracket locking post (used when attaching the bracket to a previously mounted bracket)
Cable access cover
Chassis mounting keyholes
Step 2 Use a #29 drill (0.1360-in. [3.4772 mm]) bit to drill a pilot hole at the mounting hole locations you marked.
Note The pilot hole size varies according to the material and thickness you are fastening. Cisco recommends that you test the material to determine the ideal hole size for your mounting application.
Step 3(Optional) Drill or cut a cable access hole near and below the location of the mounting bracket cable access cover large enough for the Ethernet cable, building ground wire, and power cables.
Step 4 Pull approximately 9 inches of cable through the hole. Route the Ethernet and power cables through the bracket before you attach the bracket to the ceiling or wall. Route the cables through the main cable access hole and then through the smaller access hole as shown in Figure 7.
Figure 7 Routing the Ethernet and Power Cables
Step 5 (Optional) Use the ground screw to attach the building ground wire to the mounting bracket. See the “Grounding a Chassis” section for general grounding instructions.
Step 6 Position the mounting bracket mounting holes (with indents down) over the pilot holes.
Step 7 Insert a fastener into each mounting hole and tighten.
Step 8 Connect the Ethernet and power cables to the chassis.
Step 9 Align the chassis feet with the large part of the keyhole mounting slots on the mounting plate. When positioned correctly, the cable access cover will fit inside the chassis connector bay.
Step 10 Gently slide the chassis onto the mounting bracket keyhole slots until it clicks into place.
Mounting a Chassis to a Network or Electrical Box
Follow these steps to mount a chassis to a network box or an electrical box.
Step 1 Position the universal mounting bracket (AIR-AP-BRACKET-2) over the existing network or electrical box and align the bracket mounting holes with the box holes.
Step 2 Hold the mounting bracket in place and insert a 6 x 32 x 1/4-in pan head screw into each of the mounting holes and tighten.
Step 3 Pull approximately 9 inches of Ethernet and power cable through the hole. Route the cables through the bracket before you attach the bracket to the ceiling. Route the cables through the main cable access hole and then through the smaller access hole as shown in Figure 7.
Step 4 (Optional) Use the ground screw to attach the building ground wire to the mounting bracket. See the “Grounding a Chassis” section for general grounding instructions.
Step 5 Connect the Ethernet and power cables to the chassis.
Step 6 Align the chassis feet over the keyhole mounting slots on the optional mounting bracket.
Step 7 Slide the chassis onto the optional mounting bracket until it clicks into place.
Mounting a Chassis Above a Suspended Ceiling
Using third-party accessories (not offered by Cisco) you can mount a chassis above a suspended ceiling. The universal mounting bracket (AIR-AP-BRACKET-2) supports a T-bar box hanger such as the Erico Caddy 512A or the Cooper B-Line BA50a. The box hanger should be oriented just above the top surface of a ceiling tile. If your ceiling uses particularly thick tiles, you might need to modify the tile to allow room for the chassis or use a box hanger that allows you to adjust the height of the chassis, such as the Cooper B-Line BA50A.
Note Install a chassis above ceiling tiles only when mounting below the ceiling is not an option. Mounting a chassis above the ceiling can interfere with advanced wireless LAN features that depend on uniform coverage, such as voice and location.
Follow these steps to mount the chassis above a suspended ceiling. Figure 8 shows the completed installation.
Figure 8 T-Bar Grid Mounting Bracket Parts
Suspended ceiling T-rail
Box hanger clip
Step 1 Remove a ceiling tile adjacent to the mounting location.
Step 2 Fasten the chassis mounting bracket to the box hanger using the clip or screws provided with the box hanger kit.
Step 3 Pull approximately 9 inches of Ethernet and power cable through the mounting bracket. Route the cables through the main cable access hole and then through the smaller access hole as shown in Figure 7.
Step 4 Connect the Ethernet and power cables to the chassis.
Step 5 Align the chassis feet over the keyhole mounting slots on the mounting bracket.
Step 6 Slide the chassis onto the mounting bracket until it clicks into place.
Step 7 Attach the T-rail clips on each end of the T-bar box hanger to the ceiling rails. Make sure the clips are securely attached to the T-rails.
Step 8 Replace the ceiling tile.
Grounding a Chassis
Grounding is not always required for indoor installations because the USC 5030 chassis is classified as low-voltage devices and do not contain internal power supplies. However, Cisco recommends that you check your local and national electrical codes to see if grounding is a requirement. If grounding is required in your area or you wish to ground your chassis, follow these steps.
Note Do not ground the USC 6732 chassis. If required, use a shielded cable.
Step 1 Find a suitable building grounding point as close to the chassis as possible.
Step 2 Connect a user-supplied ground wire to the building grounding point. The wire should be a minimum of #14AWG assuming a circuit length of 25 ft (30.5 cm). Consult your local electrical codes for additional information.
Step 3 Route the ground wire to the chassis.
Step 4 Attach the wire to a suitable grounding O-ring lug.
Step 5 Crimp or solder the wire to the lug.
Step 6 Insert the grounding post screw into the O-ring lug and install it on the mounting bracket as shown in Figure 9.
Figure 9 Installing the O-Ring Lug to the Grounding Post
Step 7 Use a Phillips screwdriver to tighten the ground screw.
Securing a Chassis
There are two ways to secure your chassis:
Attach it to an immovable object with a security cable.
Lock it to the mounting plate with a padlock.
Using a Security Cable
You can secure the chassis by installing a standard security cable (such as the Kensington Notebook MicroSaver, model number 64068) into the chassis security cable slot as shown in Figure 10.
The security cable can be used with any of the mounting methods described in this guide.
Follow these steps to install the security cable.
Step 1 Loop the security cable around a nearby immovable object.
Step 2 Insert the key into the security cable lock.
Step 3Insert the security cable latch into the security cable slot on the chassis.
Step 4Rotate the key right or left to secure the security cable lock to the chassis.
Step 5 Remove the key.
Figure 10 Security Cable Details
Securing the Chassis to the Mounting Plate
Use the security hasp on the adapter cable access cover and a padlock (that you provide) to secure your chassis to the mounting plate. Compatible padlocks are Master Lock models 120T or 121T. The cable access cover on the mounting bracket covers the cable bay area (including the power port, Ethernet port, console port, and the mode button) to prevent the installation or removal of the cables or the activation of the mode button.
Follow these instructions to install the padlock:
Step 1 With the chassis installed on the mounting bracket, insert a padlock into the security hasp.
Note If your chassis is mounted to a hard ceiling, the clearance between the mounting bracket and the ceiling is small. Work slowly using both hands to position and secure the lock into the mounting bracket hasp.
Step 2 Rotate the lock clockwise and align the bail with the lock body.
Step 3 Grasp the lock and push it into the bail to lock the lock. See Figure 11.
Figure 11 Inserting the Padlock into the Security Hasp
Step 4 Rotate the padlock into the padlock area. See Figure 12.
Figure 12 Rotating the Padlock into the Padlock Area
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
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