Huawei OptiX OSN 9800 U32 Enhanced Subrack V100 Quick Installation Manual page 12

Overhead Air Through Ducts
Schematic diagram of cold and hot air flows
Features of the equipment room and ventilation modes of devices
Sub-Type Name
Overhead air through
ducts
Equipment room
Equipment Room Feature
1. The air supply duct is installed at the top
of the equipment room.
2. Through the air supply duct at the top of
the precise air conditioner, cold air is
sent from the air exhaust vent to the top
of the device aisle.
Ventilation Mode of U32
Enhanced
A: air inlet from front - air
outlet from front/top
B: air inlet from front - air
outlet from top
The air supply duct on the top of the
equipment room
The air exhaust vent on the air
supply duct
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Cold air
Hot air
Multi-Purpose Fiber
Management
Cabinets Installed
A: No
B: Yes