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Underfloor Air Supply
Schematic diagram of cold and hot air flows
Features of the equipment room:
ESD floors are required in the equipment room and are raised to a certain height. From the air conditioning system, the cold air
is sent to the cold air pool under the floor and is dispersed from the perforated ESD floor.
Features of the equipment room and ventilation modes of devices
Sub-Type Name
1. ESD floors are required in the
equipment room and are raised to a
Underfloor air
certain height.
supply (open aisle
2. Ventilation ESD floors are required in
with front and rear
front of or in rear of a device. The
cold ducts)
front aisle is not equipped with a
blocking panel at the top or an aisle
door.
1. ESD floors are required in the
Underfloor air
equipment room and are raised to a
supply (The aisle is
certain height.
open with cold duct
2. ESD floors are required only in front
in the front and hot
of a device. The front aisle is not
duct in the rear)
equipped with a blocking panel at the
top or an aisle door.
1. Ventilation ESD floors are required in
the equipment room and are raised
Underfloor air
to a certain height.
supply (confined
2. Ventilation ESD floors are required
cold duct)
only in front of a device. The front
aisle is equipped with a blocking
panel at the top or an aisle door.
1. Ventilation ESD floors are required in
Underfloor air
the equipment room and are raised
supply (precise air
to a certain height.
supply)
2. Ventilation ESD floors are required
only below a device.
Equipment Room Feature
Ventilation Mode of U32 Enhanced
B: air inlet from front - air outlet
from top
D: air inlet from bottom - air outlet
from rear
D: air inlet from bottom - air outlet
from rear
C: air inlet from bottom - air outlet
from front/top
13
Cold air
Hot air
Multi-Purpose Fiber
Management Cabinets
Installed
B: Yes
D: No
D: No
C: Yes
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