Piping Installation Methods, Liebert XDP

Piping

3.3Liebert XDP Interconnection with Liebert XD Cooling Modules

All piping must be ASTM (American Society for Testing and Materials) Type ACR copper pipe.

The Liebert XDP may be connected to Liebert XD cooling modules with either Liebert’s XD prefabricated piping assembly or with rigid, off-the-shelf piping. In either setup, piping for the Liebert XD system is arranged in a manner similar to piping for a chilled water system. Liebert XD cooling modules are connected in parallel between main return and supply pipes going to and from the Liebert XDP/Liebert XDC. Figure 19 represents a typical configuration. For piping details, refer to Liebert’s XD System Design Manual, SL-16655, available at Liebert’s Web site: www.liebert.com. The guidelines provided for pipe size must be strictly followed. Failure to size the main lines and connection lines adequately may result in reduced cooling capacity. The critical aspects of pipe sizing are related to refrigerant volume and pressure drop. Each must be minimized.

Figure 19 Liebert XD system diagram

Liebert XDP

Liebert XD

Cooling

Module

SLOPE—The main supply and return lines to and

All supply and return

mains must be level

from the Liebert XDP must be sloped downward

with or above the

toward the Liebert XDP at a rate of 1-2" per 20 feet

top of all Liebert XD

(25.4-51mm per 6m) of pipe run.

modules

3.4Piping Installation Methods

The assembly and connection means used for piping in the Liebert XD system are similar to those used for conventional refrigeration systems. All piping should be installed with high-temperature brazed joints. Soft soldering is not recommended.

During brazing, the lines must be filled with flowing dry nitrogen to prevent excessive oxidation and scale formation inside the piping. Prevailing good refrigeration practices must be employed for piping supports, leak testing, dehydration and charging. Failure to use good system practices may result in damage to the system. Refer to the ASHRAE refrigeration handbook for general good-practice refrigeration piping.

Insulate all piping lines to prevent condensation in applications where the dew point approaches the R-134a refrigerant temperature.

Emerson recommends venting the pressure relief valve for the R-134a outside the conditioned space where it is open to the atmosphere. The R-134a side relief valve is inside the Liebert XDP unit at the top of the receiver.

3.4.1Piping Installation—R-134a Pumped Circuit

Emerson recommends venting the relief pressure valve of the Liebert XDP (located at the top of the receiver) outside of the conditioned space where it is open to the atmosphere.

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.

Liebert XDP160RC, XDP160RM, XDP160RA Liebert XDP Interconnection with Liebert XD Cooling Modules

Models: XDP160RA XDP160RC XDP160RM