Piping

Figure 23 General piping details

Emerson recommends field-installation of shutoff valves at these points to permit isolating the Liebert XDP for maintenance.

Liebert

XDP A

Floor

Supply

Return

Return

Supply

Liebert

XDP B

Isolation valves

Building Chilled Water Supply

Isolation valves

Building Chilled Water Return

3.5.1Evacuation and Leak Check—R-134a Pumped Circuit

1.Open all service valves, including those outside the Liebert XDP.

2.Attach a jumper hose from one of the Schrader valve fittings on a pump outlet before the check valve to a Schrader valve fittings after the check valve.

3.Place 150psig (1034kPa; 10.34 bars) of dry nitrogen with a tracer of R-134a in the system.

NOTICE

Risk of overpressurization. Can cause equipment damage.

Do not exceed 150 psig (1034 kPa; 10.34 bars) in the R-134a circuit.

4.Check the system for leaks with a suitable leak finder on the pumps’ suctions lines.

5.After completion of the leak testing, release the test pressure (per local code) and connect to vacuum pump(s) at the Schrader valves.

6.After pulling a deep vacuum for four hours, check the vacuum level and, if it has not changed, break the vacuum with dry nitrogen.

7.Pull a second vacuum to 250 microns or less. Recheck the vacuum level after 2 hours.

3.5.2Insulation

NOTE

Do not insulate piping before checking it for leaks. Insulating pipes before checking them for leaks would prevent easy detection of leaks.

Insulate all piping between the Liebert XDP and its connected cooling modules to prevent condensation where the piping passes through non-conditioned areas.

22

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Liebert XDP160RC, XDP160RM Evacuation and Leak Check-R-134a Pumped Circuit, Insulation, Floor Supply Return Liebert
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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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