YSTEM ESCRIPTION European Union Fluorinated Greenhouse Gas Requirements ......2 Direct and Indirect System Configurations ........2 Liebert XDO—Overhead Cooling Module .
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3.20 Display Panel and Remote Temperature/Humidity Sensor Locations ....29 XD C IEBERT OOLING XDCF ..........30 IEBERT Liebert XDO Standard Features .
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Table 1 Liebert XD field-installed port kits header connection size ......10 Table 2 Maximum and minimum modules supported by a Liebert XDP or Liebert XDC .
YSTEM ESCRIPTION The Liebert XD™ family of cooling units delivers efficient, sensible cooling to high-heat environ- ments. Liebert XD systems are designed to cool computer racks and hot zones in a data center or com- puter room without taking up expensive floor space for cooling components. The Liebert XD family includes: •...
European Union Fluorinated Greenhouse Gas Requirements Stationary air conditioning, refrigeration, heat pump equipments and stationary fire protection sys- tems in the European Community market and operating with fluorinated greenhouse gases (f-gas), such as R407C, R134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas). The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmo- sphere.
Liebert XDO—Overhead Cooling Module The Liebert XDO ceiling-mounted cooling module draws in hot air rising from densely populated cab- inets, passes it over the Liebert XDO’s coils and exhausts cooled air downward into the cold aisle. The unit is available with optional, flexible metal pipes with quick-connect couplings at each end for easy connection to the refrigerant distribution pipes.
Liebert XDV—Vertical, Above-Cabinet Cooling Module The Liebert XDV is installed on top of or above a rack enclosure. It is available with optional flexible metal pipes with automatic shutoff with quick-connect couplings at the ends for easy connection to the refrigerant distribution pipes. The Liebert XDV may be set up in either of two ways: •...
Liebert XDH—Horizontal Cooling Module The Liebert XDH cooling module is designed to be placed within a row of server enclosures in a hot aisle-cold aisle arrangement. The Liebert XDH has dual refrigeration circuits and is available in a half-rack-width unit. The Liebert XDH is intended for use with a Liebert XD pumped refrigerant cool- ing system, supplied by either a Liebert XDP or Liebert XDC.
Liebert XDCF The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and equipment without exhausting heat into the room. Two modules (top and bottom) may be mounted on the rear of a BladeFrame cabinet. CF modules consist of a sheet-metal frame, coil and filter dryer. It has no moving parts and needs no electricity.
Liebert XDA—Air Flow Enhancer The Liebert XDA is a fan unit that boosts the airflow through densely populated enclosures, removing hot spots from within the racks. One or two units can be mounted on the rear of most rack enclosures. Figure 9 Liebert XDA—air flow enhancer—on Liebert Foundation enclosure System Description...
Liebert XDP—Pumping Unit The Liebert XDP isolates the building’s chilled water circuit from the pumped refrigerant circuit. The Liebert XDP circulates refrigerant to Liebert XDCF, Liebert XDH, Liebert XDO or Liebert XDV mod- ules while preventing condensation by maintaining the refrigerant’s temperature above the dew point.
Liebert XDC—Refrigerant Chiller The Liebert XDC is an indoor chiller that connects directly to the Liebert XD cooling modules and pro- vides refrigerant circulation and control. The Liebert XDC keeps the refrigerant temperature above the dew point and eliminates the need for a separate pumping unit in the direct system configuration. The Liebert XDC employs two sets (for redundancy) of remote sensors to determine the temperature and humidity in the air and instantly adjusts refrigerant supply temperature to compensate for changing conditions.
Connection to the prefabricated piping assembly is a threaded coupler. For information on acquiring the correct kit for your installation refer to DPN000780_Rev1, available by calling 1-800-LIEBERT and from your local Emerson Network Power representative. Prefabricated Headers Field piping kits are available in several versions •...
TARTING A Determining Cooling Equipment Needs Is adequate space available for a Liebert XD installation? Is the hot aisle/cold aisle approach being utilized for this room design or can it be utilized in this room design? Is redundant cooling equipment required? Are there access considerations for all components (possible rigging problems) What heat load growth is anticipated over the next few years? How are the cabinets going to be populated (density of heat generation)?
Implementing a Hot-Aisle/Cold Aisle Design A best practice is to use rows of equipment racks in an alternating arrangement of cold aisles and hot aisles. This is best accomplished when the layout of the file-server farm area is first being planned, and it is exceedingly more difficult to accomplish when the computer room is already populated with operating hardware.
ESIGNING A IEBERT Liebert XD systems are intended for use with precision air conditioning equipment, such as the Lie- bert Deluxe System/3 and Liebert DS. The precision air conditioning equipment is required to control the room’s humidity and to filter the air. The Liebert XD systems provide efficient, highly effective heat removal (sensible cooling only), and provide no dehumidification.
Selecting Liebert XD Cooling Modules The next step is to select the Liebert XD cooling modules to be configured into the solution. Liebert XD modules that use pumped refrigerant can be connected to the same Liebert XDP/Liebert XDC pip- ing circuit. This includes the Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV. Generally, the Liebert XDO is selected for use in new installations or renovations where the unit can be installed on the ceiling or in the overhead space.
(1.8m), overall performance of the system may be negatively affected and gaps in cooling may occur. Emerson recommends installing one Liebert XDO at the end of each aisle being cooled and to space the remainder between these end units in pairs as shown in Figure 15. This layout will block the incursion of hot air around the side of the end cabinets.
3.6.2 Determining Vertical Placement of Liebert XDOs Above the Cold Aisle In the maximum density configuration, Emerson recommends placing the Liebert XDOs between 18 and 24 inches (457-609mm) above the equipment cabinets. In some cases where the required density is less, the front-to-rear spacing of Liebert XDOs in a row will be increased. To ensure coverage of the wider spaces between the Liebert XDO units, the vertical distance between the cabinets and the Lie- bert XDOs should be increased.
Liebert XDV Unit Placement Liebert XDV units should be placed on top of the cabinets that generate the greatest amount of heat. If heat loads are dispersed evenly throughout the room, the Liebert XDV modules may be spread out accordingly. The Liebert XDV must be placed toward the front of the equipment cabinet, so that its front bottom edge is flush with the front top edge of the cabinet.
Liebert XDCF Placement The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and equipment. Liebert XDCF modules attach to the rear of the Egenera BladeFrame EX cabinet, beside the power modules (see Figure 17). No cutting or drilling is required to attach the modules; all mounting holes, slots and pins required are fabricated at the factory.
Liebert XDH Placement The free-standing Liebert XDH cooling unit is best placed among the equipment cabinets in a hot aisle-cold aisle arrangement (see Figure 18). The Liebert XDH draws in air from the hot aisle, cools it and discharges the cooled air into the cold aisle where it is drawn into the equipment cabinets. Reg- ular spacing aids in optimizing cooling.
3.11 Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules Figure 19 Liebert XDV units mounted on racks emitting 3kW of heat, top view Downflow Cooling Unit XDVs Mounted on Equipment Racks Figure 20 Liebert XDV units mounted on racks emitting 5kW of heat, top view Downflow Cooling Unit...
Figure 21 Liebert XDV units mounted on racks emitting 8kW of heat top view Downflow Cooling Unit XDVs Mounted on Equipment Racks Interlaced piping arrangement for enhanced protection Figure 22 Liebert XDV units mounted on racks emitting 16kW of heat top view Downflow Cooling Unit...
3.12 Liebert XD Refrigerant The refrigerant used in the Liebert XD system is HFC-134a (1,1,1,2-tetrafluoroethane), made by a number of manufacturers. The amount of refrigerant used by the Liebert XD system may be signifi- cantly higher than in typical DX cooling systems. CAUTION Risk of improper oil use.
Figure 23 Piping for Liebert XDP/Liebert XDC used with Liebert XD cooling units 20ft. 9ft. (6.7m) (2.7m) max. max. Liebert XDP/ Liebert XDC SLOPE—The main supply and return lines to and from the Liebert XDP/Liebert XDC must be sloped downward toward the Liebert XDP/Liebert XDC at a rate of 1-2" per 20 feet (25.4-51mm per 6m) of pipe run.
Figure 24 Hydraulic diagram Liebert Liebert XDP Liebert Liebert XDP 3.14 Liebert XD Piping Slope The main supply and return lines to and from the XDP/XDC must be sloped downward toward the XDP/XDC at a rate of 1-2" per 20 feet (25-51mm per 6m) of pipe run. Horizontal connector lines should also be sloped downward from the cooling modules toward the main supply and return lines.
3.16 Determining Refrigerant Volume After the preliminary system design is completed, Tables 7, through 15 may be used to determine the amount of refrigerant required. Perform the calculation below for each Liebert XD system being configured. NOTE All lengths in Tables 7, 8, 9 and 10, are actual pipe lengths, not equivalent pipe lengths. 3.16.1 Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume NOTE System refrigerant volume calculations in Tables 7, 8, 9 and 10, are based on a fully loaded...
3.16.2 Calculating Refrigerant Charge—Example Using Tables 7, 8, 9 and 10, calculate the refrigerant charge of the individual sections of your Liebert XD system. Add the calculated charge amounts to determine the amount of R-134a refrigerant required for one system combining a Liebert XDP with Liebert XD cooling modules (Liebert XDCF, Liebert XDH, Liebert XDO and Liebert XDV).
90 degrees. Connection to the prefabricated piping assembly is with a threaded coupler. For information on acquiring the correct kit for your instal- lation, refer to DPN000780, available by calling 1-800-LIEBERT and from your local Emerson Network Power representative.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 28 Dimensional data—Liebert XDO hard-piped units LEFT SIDE OF XDO 24-1/8" (613mm) FRONT OF XDO Do Not Lift Here Figure 29 Dimensional data—Liebert XDO with pre-charged option Left Side 24-1/8"...
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 31 Liebert XDO top and front electrical access points Mounting Hole Knockouts for High-Voltage Wiring FRONT OF XDO The low-voltage connection is present only if the Liebert XDO is equipped with the optional condensation detection system.
For information on acquiring the correct kit for your instal- lation, refer to DPN000781_Rev1, available from Liebert by calling 1-800-LIEBERT and from your local Emerson Network Power representative. • Condensate Detection—The Liebert XDV unit is available with factory-installed condensate detection.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 34 Liebert XDV electrical connections for CE approved units 60Hz MODELS ONLY. FIELD WIRING CONNECTIONS AT TERMINAL STRIP TO BE N.E.C. CLASS 2 USE SWITCH CONTACTS WITH 75 V.A. MINIMUM 50Hz MODELS ONLY.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 35 Liebert XDV electrical connections for CSA-approved units 60Hz MODELS ONLY. FIELD WIRING CONNECTIONS AT TERMINAL STRIP TO BE N.E.C. CLASS 2 USE SWITCH CONTACTS WITH 75 V.A. MINIMUM 50Hz MODELS ONLY.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 36 Suspending single Liebert XDV from Unistruts Figure 37 Suspending single Liebert XDV from the roof structure Hanging XDV unit To prevent bypass air from recirculating through the XDV without it passing through the cabinet, this space between the hanging...
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 38 Alternative mounting methods—mounting multiple Liebert XDV units Attach hanger brackets to each corner of each XDV. This arrangement permits mounting from either Unistruts or from overhead structure. Unistrut field-supplied upper XDV: 1 Bolt 3/8"- 16,...
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Liebert XDCF Standard Features The Liebert XDCF is a self-contained module designed to cool Egenera’s BladeFrame EX cabinets and equipment without exhausting heat into the room. Upper and lower modules may be mounted on the rear of an Egenera BladeFrame. Liebert XDCF modules use R-134a refrigerant.
(37mm) Upper unit shown; both upper and lower units have same dimensions RIGHT Piping is not load-bearing and should never be used to lift or move the Liebert XDCF 31-3/8" (797mm) 3-9/16" (90mm) Return Pipe EMERSON NETWORK POWER Liebert SIDE...
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Liebert XDCF Installation Considerations No cutting or drilling is required to attach the modules to the rear of the Egenera BladeFrame cabi- net. All mounting holes, slots and pins required are fabricated at the factory. Liebert XDCF modules attach beside the power modules on the rear of the Egenera BladeFrame (see Figure 41).
90 degrees. Connection to the prefabricated piping assembly is with a threaded coupler. For information on acquiring the correct kit for your instal- lation, refer to DPN000780, available by calling 1-800-LIEBERT and from your local Emerson Network Power representative.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF 4.7.2 Piping Connections to Liebert XDP or Liebert XDC Piping Installation for Hard Piped System The assembly and connection means for piping in the Liebert XD system are similar to those used for conventional refrigeration systems.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Liebert XD Flex Pipe Kit Flex Pipe kits are available in lengths of 4, 6, 8 and 10 feet (1.2, 1.8,2.4 and 3 meters). Connection style to the unit end may be straight or 90 degrees. Connection to the prefab piping assembly is a threaded coupler.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Liebert XD Piping Dimensions and Features 4.9.1 Piping Installation Method prefabricated headers The assembly and connection means used for piping in the Liebert XD system are similar to those used for conventional refrigeration systems.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF 4.11 Liebert XDC Standard Features • Compressors—Scroll with a suction gas cooled motor, vibration isolators, thermal overloads, man- ual reset high-pressure switch and pump down low-pressure switch. • Refrigeration System—Dual refrigeration circuits each including liquid line filter dryers, refriger- ant sight glass with moisture indicator, electronic control valve, adjustable externally equalized expansion valves and liquid line solenoid valves.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 57 Liebert XDC piping locations 6" (152mm) 23" (584.2mm) Dimensions are approximate and subject to change without notice. * Allow 8" (204mm) of clearance for filter replacement ** To ensure all refrigerant flow is filtered, install the filter dryer assembly between the discharge line of the XDC and the first bypass flow controller or the first cooling module.
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 58 Positioning a water/glycol Liebert XDC for placement on a floor stand 47" (1194mm) 6" (153mm) 23" (584mm) C - Hot Gas Refrigerant Lines D - Liquid Refrigerant Lines E - Threaded Female...
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 59 Piping locations—floor stand and valve assembly 24" Nominal (609mm) TOP VIEW OF FLOOR STAND Hot Gas 1 Hot Gas 2 Outlet Circuit 1 Inlet FLOOR STAND CONNECTIONS 72"...
Liebert XD Cooling Modules—Liebert XDO, Liebert XDV, Liebert XDH and Liebert XDCF Figure 68 Liebert XDC Extra Low Voltage field connections points Control Display Panel Four thermostatic wires to be connected toTB3 Control wiring must be Class 2 and installed in accordance with the National Electrical Code (NEC) Requires shielded cable Temperature/Humidity Sensor...
PECIFICATIONS Table 27 Liebert XDC160 specifications Models Cooling Capacity, tons (kW) Minimum Load Electrical Requirements Minimum supply wire sizing ampacity Maximum fuse or circuit breaker size Dimensions, inches (mm) Height - Main unit only Height - Main unit only, as shipped Height - Water / Glycol cooled condenser stand Width - Water / Glycol cooled condenser stand Depth - Water / Glycol cooled condenser stand...
Table 31 Liebert XDP160 specifications Models Cooling Capacity, Nominal Minimum Load Electrical Requirements Input Full Load Amps Dimensions, inches (mm) Height – Unit only Height – As shipped Width Depth Weight, lb (kg) Unit only Shipping weight Installed, with refrigerant and chilled water Pipe Connections Refrigerant supply to Liebert XD...
Table 38 Liebert XDV8 dimensions—domestic and export Shipping Dimensions Length x Width x Height inches (mm) Model Domestic 48 x 40 x 24-1/4 All Models (1219 x 1016 x 616) Table 39 Liebert XDV10 dimensions—domestic and export Shipping Dimensions Length x Width x Height inches (mm) Model Domestic...