Huawei RRU3971 Installation Manual page 22

Figure 3-5 inappropriately installed RRU
Correct installation methods:
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Figure 3-6 Requirements for the vertical deviation angle of an RRU
(1) RRU
Issue ()
The installation supports' specifications described in this document are only based on the
exterior and dimensions of the mounting kits. Before installing equipment, assess the
strength and reliability of the installation support to determine whether it can bear the weight
of the equipment.
To ensure the heat dissipation of the RRU and waterproofing of the ports at the bottom of
the RRU, the vertical deviation angle of an RRU must be less than or equal to 10 degrees,
as shown Figure 3-6.
On a tower, an RRU can be installed on a pole, angle steel, or U-steel. The side-mounted
installation mode (one side instead of the rear of an RRU is mounted on the support) is
recommended for RRUs on the main pole secured on a tower. This installation mode allows
multiple RRUs to be installed next to each other at the same level on a pole. When the
horizontal distance between the main and auxiliary poles on a tower is equal to or greater
than 810 mm (23.62 in.), the side-mounted mode is recommended for installing RRUs on
the auxiliary pole to meet the minimum clearance requirements. Otherwise, the standard
mode is recommended for installing RRUs on the auxiliary pole.
(2) Installation support (pole, U-steel, angle steel, or wall)
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