Chapter 2: Installation

Figure 2-14. Interconnecting field wiring remote condenser.

2.10 System Charging Procedures

2.10.1 Water–Water/Glycol Cooled Systems

No field refrigerant charging is required for fluid-cooled units. The following precautions must be observed when installing and filling the water–water/glycol loop:

•The piping system must be cleaned prior to allowing water or water/glycol to flow through the system.

•Glycol must be mixed with water before it is added to the system. Use only water/glycol solution with inhibitors for corrosion protection.

•When filling the water–water/glycol loop, all air must be bled from the piping system.

1.Open a vent valve at highest point of the system.

2.Fill the system until the solution is discharging from the vent with minimal signs of foaming caused by air in the system.

2.10.2 Remote Air-Cooled Systems

Remote air-cooled systems are provided with a dry nitrogen holding charge that must be removed before piping and charging the unit. Before charging, check the unit nameplate to confirm the type of refrigerant to use.

NOTE: Refrigerant charging must be performed by a qualified air-conditioning technician.

Cold Row systems use R410A refrigerant. R410A is a blended refrigerant recognized for being safe for the environment. Refrigerants that are multicomponent blends have component parts with different volatilities that result in a change in composition and saturation temperature as evaporation and condensation occur. The composition of liquid R410A refrigerant, however, remains relatively constant.

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Black Box CRDX-A-FS-24KW, CRDX-W-FS-12KW Remote Air-Cooled Systems, Interconnecting field wiring remote condenser
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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.
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