Huawei NetCol8000-C070 User Manual page 33

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
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Issue 07 (2021-12-30)
The chilled water valve is a proportional integral regulating valve that uses
incremental proportional-integral-derivative (PID) control to ensure precise
adjustment and accurate control.
EC fan
– The fan comes from a high-end brand and provides high reliability and
long service life.
– The highly efficient EC fan saves more than 30% energy than a common
fan.
– The direct drive that the fan adopts has higher transmission efficiency
than the belt drive, which reduces belt replacement and routine checks.
– Compared with the fan speed control by the belt drive, the fan speed
control by direct drive has a wider application range which is not subject
to the transmission ratio.
– The fan is controlled over RS485 communications. You can view the fan
power and speed in real time on the display module and obtain fault
information including fan blockage, overvoltage, and undervoltage. These
features allow you to view the status and locate a fault.
Air filter
The G4 air filter is used, and the F5 air filter is optional. The air filter meets
cleanliness requirements for customers' data centers. The air filter of
downflow smart cooling products is paved on the heat exchanger, ensuring
easy maintenance and reducing air resistance.
(Optional) Motorized damper/Gravity damper
When a smart cooling product is powered off, the damper is closed
intelligently to prevent loss of air volume and cooling capacity.
(Optional) Direct free-cooling plenum
It fully uses the outdoor free cooling source, intelligently adjusts the fresh air
and return air ratios and fan speed, and saves energy by over 30% a year
compared with the traditional chillers.
(Optional) Differential pressure sensor
– It adjusts air volume based on the differential pressure to ensure precise
air supply. No excessive adjustment helps save energy and reduce power
consumption.
– The air supply volume is also sufficient, which helps eliminate hotspots
and improves reliability.
Differential pressure switch
When the air filter is dirty or blocked, the differential pressure switch triggers
an alarm, prompting for air filter replacement.
(Optional) Cap
It is used to control the air exhausting from the front and rear of the product.
(Optional) Wet film humidifier
– The wet film humidifier uses wet film for humidification and therefore
has low water quality requirements and high environment adaptability. In
most cases, household water can be used without being processed
specially.
– It has a simple structure and is easy to remove, clean, and maintain.
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