Huawei DBS3900 Installation Manual page 20

RRU3260
Installation Guide
Requirements for the Installation Scenarios
Application scenarios:
To ensure proper heat dissipation of the RU, the following requirements must be met:
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If the RU is improperly installed, heat dissipation of the RU deteriorates and the RU may not
work properly, as shown in
Figure 3-5 Improperly installed RUs
Method of installation:
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Issue 05 (2014-06-30)
The RU cannot be installed in an enclosed cabinet without a cooling system.
The RU cannot be installed in an enclosed camouflage box.
The RU cannot be installed in an enclosed equipment room without a cooling system.
When multiple RUs are installed in centralized mode, the minimum clearance
requirements must be met. For details about the minimum clearance requirements, see
3.5.2 Clearances for Three or More RUs
RU mounting kits in assembled installation mode are not allowed in indoor scenarios.
Figure
To ensure the heat dissipation of the RU and waterproofing of the ports at the bottom of
the RU, the vertical deviation angle of an RU must be less than or equal to 10 degrees, as
shown in Figure 3-6.
On a tower, an RU can be installed on a pole, angle steel, or U-steel. The side-mounted
installation mode (one side instead of the rear of an RU is mounted on the support) is
recommended for RUs on the main pole secured on a tower. This installation mode
allows multiple RUs 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
RUs on the auxiliary pole to meet the minimum clearance requirements. Otherwise, the
standard mode is recommended for installing RUs on the auxiliary pole.
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and 3.5.3 Installation Spacing Between
3-5.
3 Information About the Installation
RUs.
12