Optional Components; Low-Temperature Component - Huawei FusionModule2000 Product Description

FusionModule2000 Smart Modular Data Center
Product Description (380 V)

3.3.8 Optional Components

The low-temperature component and sunshade are optional for the outdoor unit.

3.3.8.1 Low-Temperature Component

Working Principle
When the outdoor temperature is below the operating temperature lower limit specified for the
product, the condensing pressure of the system for the outdoor unit condenser with natural
cooling may still below the safe operating pressure of the compressor. A low-temperature
component is required to address this issue.
The low-temperature component intelligently controls the condensing pressure to ensure that
the equipment can work safely and reliably at an outdoor ambient temperature as low as
–40º C. When detecting that the outdoor condensing pressure is low, the pressure stabilizing
valve automatically opens to bypass hot gas to the liquid storage tank, thereby ensuring that
the condensing pressure stays in the range for safe and reliable operation. When detecting that
the condensing pressure exceeds the threshold, the pressure stabilizing valve automatically
closes the bypass.
Figure 3-57 Low-temperature component
(1) Safety valve
(4) Condensing pressure
control valve
The low-temperature component is required in an environment where the outdoor temperature
can be as low as –20º C. Table 3-47 describes the technical specifications of the
low-temperature component.
Issue 04 (2017-06-30)
(2) Liquid line port 1
(5) Gas pipe port 1
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3 System Architecture
(3) Liquid line port 2
(6) Gas pipe port 2
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