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