Piping

3.4.2Piping Mains

All refrigeration piping mains connected to the Liebert XD cooling module, both supply and return, should be installed with a downward pitch toward the Liebert XDP of 1-2" for every 20 feet (25.4-51mm per 6m) of pipe run.

Install a 20-40 mesh strainer on the chilled water supply to the Liebert XDP. The strainer is required to prevent particles in the chilled water from entering the Liebert XDP’s heat exchanger. The maximum distance from the strainer to the Liebert XDP is 10 feet (3m).

NOTICE

Risk of particles in chilled water. Can cause equipment damage and reduced cooling.

Failure to install a strainer in the supply line to the Liebert XDP can result in damage to the unit’s heat exchanger.

3.4.3Bypass Flow Controller

Three bypass flow controllers are required to ensure that the Liebert XDP pumps operate within the optimum range. These devices are added to the field piping and simulate the flow of additional cooling modules.

Each bypass flow controller must be installed with one shutoff valve to allow the controller to be disabled when cooling modules are added to a Liebert XD system.

Bypass flow controllers should be connected between the main supply and the main return lines of the field piping. The connection points to the main supply and return lines should be in a convenient and accessible location between the Liebert XDP/Liebert XDC and the first Liebert XD module in the circuit. See Figures 20 and 21 for piping details of the bypass flow controller.

Refer to Table 5 to determine the number of bypass flow controllers that must be open to provide proper refrigerant flow based on the total nominal cooling capacity of the cooling modules in each Liebert XD system.

Table 5 Bypass flow controllers for a Liebert XDP-based system

 

Required Number of Open

System Load kW Cumulative

Bypass Flow Controllers

 

Liebert XDP

Module Model Size

 

 

48 to 63

3

 

 

64 to 95

2

 

 

96 to 127

1

 

 

128 to 160

0

 

 

Figure 20 Bypass flow controller details, dimensions

4" (102mm)

7/8"

(22mm) ID

20

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Liebert XDP160RA, XDP160RM Piping Mains, Bypass Flow Controller, Bypass flow controllers for a Liebert XDP-based system
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XDP160RA, XDP160RC, XDP160RM specifications

The Liebert XDP series is an innovative line of uninterruptible power supplies (UPS) designed to safeguard critical IT equipment and ensure reliability in demanding environments. The XDP160RM, XDP160RC, and XDP160RA models are distinguished by their robust features and advanced technologies, making them ideal for data centers, server rooms, and telecommunications.

One of the standout features of the Liebert XDP series is its high power density. The XDP160RM, XDP160RC, and XDP160RA models provide 160 kVA of power in a compact design, occupying minimal floor space. This efficient design maximizes data center performance without compromising on reliability.

All three models utilize advanced digital signal processing (DSP) technology that enhances system performance and efficiency. The DSP technology ensures high efficiency rates, often exceeding 95% in online mode. This not only reduces energy costs but also minimizes heat output, contributing to a more sustainable operational environment.

The Liebert XDP series is equipped with multiple output configurations, allowing for versatile installation options. The modular architecture of the UPS systems allows for easy scalability to meet future power demands without the need for complete system replacement. This flexibility is crucial for businesses expecting growth or changes in IT infrastructure.

Another important aspect of the XDP160RM, XDP160RC, and XDP160RA is their advanced battery management systems, which optimize battery performance and longevity. The integrated smart battery charging technology prevents overcharging and extends battery life, ensuring that the UPS is always ready during power interruptions.

Additionally, the systems are designed with user-friendly interfaces that facilitate ease of monitoring and management. With real-time data on power usage, battery status, and overall system health, IT administrators can quickly address any issues that arise. The monitoring capabilities extend to remote access, enabling users to manage the UPS systems from virtually anywhere.

The Liebert XDP series also incorporates enhanced safety features, including fault detection and automated alerts, which further bolster reliability. With a strong commitment to maintaining uptime and safeguarding critical operations, the XDP models are a wise investment for any organization reliant on continuous power availability.

In conclusion, the Liebert XDP160RM, XDP160RC, and XDP160RA UPS systems are engineered to deliver exceptional power protection through high efficiency, advanced technologies, and user-friendly management features. These models are positioned to meet the rigorous demands of modern IT environments, ensuring that businesses can maintain operations without interruption.
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