Chapter 2: Installation

2.10.3Refrigerant Characteristics 2.10.3.1 Pressure/Temperature Settings

The following table is provided to assist with the normal settings of the system for R410A refrigerant. Where applicable, minimum and maximum settings are given along with normal operating pressures.

Table 2-11. R410A refrigerant pressure/temperature settings.

 

Normal

Min.

Max.

 

 

 

 

Sub-cooling °F

10

5

20

 

 

 

 

Superheat °F

15

10

20

 

 

 

 

Design Condensing Temp. @ 95°F

125

105

140

Ambient

 

 

 

 

 

 

 

Suction Pressure (psig)

130

105

140

 

 

 

 

Fan Cycling Control—Fan On (psig)

440

330

480

 

 

 

 

Fan Speed Control (psig)

440

 

 

 

 

2.10.3.2 Saturated Refrigerant Pressure

The following refrigerant temperature/pressure table is provided for reference for R410A refrigerant.

Table 2-12. R410A refrigerant pressures.

Temperature (°F)

Pressure (psig)

Temperature (°F)

Pressure (psig)

 

 

 

 

20

78.4

75

218

 

 

 

 

22

81.9

80

236

 

 

 

 

24

85.5

85

255

 

 

 

 

26

89.2

90

274

 

 

 

 

28

93.1

95

295

 

 

 

 

30

97.0

100

318

 

 

 

 

32

101

105

341

 

 

 

 

34

105

110

365

 

 

 

 

36

109

115

391

 

 

 

 

38

114

120

418

 

 

 

 

40

118

125

446

 

 

 

 

42

123

130

477

 

 

 

 

44

128

135

508

 

 

 

 

46

133

140

541

 

 

 

 

48

137

 

 

 

 

50

143

 

 

 

 

55

155

 

 

 

 

60

170

 

 

 

 

65

185

 

 

 

 

70

201

 

 

 

 

724-746-5500 blackbox.com

Page 41

Page 41
Image 41
Black Box Black Box Cold Row DX, CRDX-W-FS-12KW, CRDX-A-FS-24KW, CRDX-G-FS-24KW user manual Saturated Refrigerant Pressure

CRDX-W-FS-12KW, Black Box Cold Row DX, CRDX-W-FS-24KW, CRDX-A-FS-24KW, CRDX-A-FS-12KW specifications

The Black Box CRDX series consists of high-performance cooling solutions designed to maintain optimal temperature conditions in data centers and server rooms. Key models in this series include the CRDX-W-FS-12KW, CRDX-W-FS-24KW, CRDX-G-FS-12KW, and CRDX-A-FS-24KW. These units are engineered to provide efficient cooling while addressing the rising demands of modern IT infrastructure.

One of the standout features of the CRDX series is its cold row design. This configuration enables targeted cooling delivery directly to the equipment, enhancing efficiency and reducing energy consumption. The airflow management in these models ensures that cooled air is directed where it is needed most, minimizing hotspots and maximizing cooling performance.

Both the CRDX-W-FS-12KW and CRDX-W-FS-24KW models utilize advanced refrigerant-based cooling technology. These units are equipped with electronically commutated (EC) fans, which are highly efficient and quieter than traditional fan technologies. This innovation not only lowers operational costs but also creates a more comfortable environment within the data center.

The CRDX-G-FS-12KW model stands out for its hybrid capabilities, offering both chilled water and direct expansion cooling options. This versatility allows facility managers to choose the best cooling approach based on their specific requirements and current infrastructure. The hybrid system can optimize energy consumption and enhance cooling efficiency, contributing to lower operating costs.

Another noteworthy feature across these models is their intelligent controls and monitoring capabilities. Equipped with sophisticated sensors and control systems, operators can gain real-time insights into temperature fluctuations, humidity levels, and unit performance. This data aids in proactive maintenance and ensures that cooling systems are operating at peak efficiency.

The CRDX-A-FS-24KW, on the other hand, is designed with a focus on adaptability and scalability. This model can be integrated easily into existing network setups, making it an excellent choice for facilities that anticipate future growth or need to adapt to changing cooling demands.

Overall, the Black Box CRDX series exemplifies the latest advancements in cooling technology, offering innovative features designed to support high-density computing environments. With their efficient cooling capabilities, intelligent controls, and flexible design options, these models provide reliable solutions for data centers looking to enhance their cooling systems while reducing operating costs.