4.7.4
Mount AP433e above a Suspended Ceiling (Plenum)
Use the optional T-bar box hanger mounting kit to mount the AP433e above
suspended ceiling T-rails (Figure 12, AP433e Mounted above a Suspended
Ceiling Face Down). The installation attaches the T-bar box hanger to the ceiling
rails and then the AP433e attaches to the T-bar box hanger. Note that an AP433e
mounted above the ceiling has about 2-3 dBm less RF coverage than an AP433e
mounted under the ceiling.
The AP433e with the metal enclosure exposed meets the requirements for fire
resistance and low smoke-generating characteristics required by Section 300-
22(C) of the National Electrical Code (NEC) for installation in a building’s
environmental air space.
You may need to modify thicker tiles to support this installation.
Warning!
Any Fast Ethernet (FE) cables installed in air-handling spaces should be suitable
under NEC Article 800.50 and marked accordingly for use in plenums and air
handling spaces with regard to smoke propagation, such as CL2-P, CL3-P, MPP
(Multi Purpose Plenum), or CMP (Communications Plenum). Use Ethernet cable
that meets the requirements for operating in plenums and environmental air space
in accordance with Section 300-22(C) of the NEC.
To mount an AP433e above the ceiling with the optional T-bar kit, follow these
steps:
•
Determine the location on the ceiling rails where the AP will be mounted
and remove the ceiling tile.
•
Unpack the T-bar hanger kit.
•
Unlock the AP by sliding the locking key into the small hole with an
unlocked image above it. See Figure 11, Unlock
•
Attach the square bracket to the underside of the main support bar using
the screws provided, as shown in Figure 12, AP433e Mounted above a
Suspended Ceiling Face Down
Figure 12, AP433e Mounted above a Suspended Ceiling Face Down
•
Brace your hand against the back of the main support bar and press the
AP433e against the square bracket in a similar manner to that indicated
in Figure 10, Mounting AP433e to a Suspended Ceiling Rail
•
Twist until the AP433e clicks into place. If desired, you can now lock the
AP using the locking key.
•
Attach the two legs of the mounting bracket to the T-bars on which the
AP is to be mounted by sliding the clips onto the bars.
•
For each antenna, loosen the knurled ring at the base of the antenna,
point the antenna down, then retighten the ring (or attach the antennas, if
not already done).