RRU is a professional communications equipment and cannot be installed in areas which are
accessible to people. The installation scenarios involve the related security features. For details
about specific requirements and precautions, see Safety Information.
Application scenarios:
To ensure proper heat dissipation of the RRU, the following requirements must be met:
• The RRU cannot be installed in an enclosed cabinet without a cooling system.
• The RRU cannot be installed in an enclosed camouflage box.
• The RRU cannot be installed in an enclosed equipment room without a cooling system.
• When multiple RRUs are installed in centralized mode, the minimum clearance requirements
must be met. For details about the minimum clearance requirements, see Clearance for Three or More
RRUs and Installation Spacing Between RRUs.
NOTICE:
If the RRU is inappropriately installed, heat dissipation of the RRU deteriorates and the RRU may
not work properly, as shown in Figure 1.
Figure 1 Inappropriately installed RRU
Installation restrictions:
• The specifications of installation supports described in this document are based only 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
in Figure 2.
• 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 the
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