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Liebert® Xtreme Density™

1. To Chiller E XDC e Supply Condenser or i or Drycooler Liebert XDP Pumped m Refrigerant Return 34a gg ieber XD Lines Cooling Module To Chiller 4 XDC MNT xb Condenser Cooling Module or Drycooler Pumped Refrigerant R134a Liebert XDP Lieber XD Liebert XDCF Liebert Cooling Module Liebert XDO or Liebert XDV 37 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO Liebert XDV Liebert XDCF Mechanical Considerations 4 2 94 1005 igure F Figure 35 shows the attachment pos t on the rear of the Egenera BladeFrame enclosure 1 d the locat d to f is engineere bert XDCF 1e The L it f pipes lon imensions an illustrates the unit s d of each module IONS Figure 34 Overall dimens 3 9 16 90mm 7 5 16 186mm Return 1 7 16 37mm TIGHTEN FLEX PIPE TO UNIT WITH THE SCHRADER VALVE IN THIS POS MION o JONCE FLEX PIPE CONNECTIONS ARE MADE TO THE UNIT DO NOT RETURN DISASSEMBLE FROMTHE UNIT REMOVE CONNECTIONS FROM CEILING HEADERS BY TURNING THE SUPPLY VALVE TO THE JOFF POSITION AND THEN TURNING THE RETURN VALVE TO THE OFF POSITION THE HEADER CONNECTIONS MAY BE REMOVED 1 7 16 TIGHTEN FLEX PIPE TOUNITWITH THE SCHRADER VALVE EMERSON NETWORK POWER
2. Liebert XD Flex Pipe assemblies supply and System refrigerant charge for the supply and return R 134a refrigerant charge for hard piped connector lines to and from any model Liebert XDH Liebert XDO Liebert eeeeeeeeee RR Rc R 134a refrigerant charge for Flex Pipe connector lines to and from any model Liebert XDO Liebert XDH Liebert XDV Liebert System R 134a charge for a Liebert XDP Liebert XDC with any model Liebert XDH Liebert XDO Liebert XDV Liebert XDCF lese ee Calculating refrigerant Worksheet to calculate refrigerant charge Compressor Ollie hos PR ardeo lcd qutd re x dr ME Indoor unit refrigerant charge R 407c Air cooled systems liquid line charge R 407c refrigerant per 100 ft 30 m of Type COD Der Cen ot sue ias E T EE AM MD ME LULA EU Indoor water glycol cooled condenser module 407 Outdoor condenser charge R 4076 ccce eee s Dimensional data Liebert XD Chiller dimensions 1 Liebert XD Chiller piping connection 1
3. Positioning Liebert XDV on top of cabinet 212435440024 cha DEA Ia NE REA AeA RS ER ES Liebert units mounted on racks emitting 3kW of heat top view Liebert XDV units mounted on racks emitting 5kW of heat top view Liebert XDV units mounted on racks emitting 8kW of heat top view Liebert units mounted on racks emitting 16kW of heat top 1 Piping for Liebert XDP Liebert XDC used with Liebert XD cooling units Generic piping layout Bypass flow controller details dimensions Bypass flow controller arrangement Bypass flow controller piping Hard pipe connection diagram for Liebert cooling modules Two port prefabricated piping for Liebert XD cooling modules Four port prefabricated piping for Liebert XD cooling modules Five port prefabricated piping for Liebert XD cooling modules Ten port prefabricated piping for Liebert XD cooling modules Additional oil requirements for refrigerant Liebert XDCF generic piping layout cc RR RR ee eas Overall dimensions Liebert XDCF unit mounting locations Liebert XDCF supply and return piping access points Liebert XDH dimensions Supply and return piping connections Dimensional data Liebert XDO hard piped units Dimensional data Liebert XDO with pre charged option
4. Liebert Water Glycol Piping Connection Sizes 0 ee eens Liebert XDP dimensions 24 52 EDAM oper a ee A RU ed dece CS Unit piping outlet connection sizes inches OD Cu Liebert specications 6 eu P wai des dei d C a ei Liebert XDEIZO SDeCITICAEIOUS4 20d wed dre de dee d bed qe S Red Liebert XDH 32 specications e sea dor sat ee oe vate Sob etur Mee LL NE Eee dE ada d Liebert NDOTO SpeciiCatiOns sa ha hue ra pps a P arce ec eee udo hod apa do eed ati aa Sewn ak NDO20 specications s nU DN bar A I Ce OR Eae Kara d RE SA DL Options for Liebert XDO20 and Liebert XDO16 lle IIR Liebert dimensions domestic and Liebert X DV S SDecrHeat IODSa 2053 dc ei eh cara p AC uote Ee AUG Sa dO Re ce ne aov bun Liebert XDV 10 1 E VADE SI Liebert dimensions domestic and Liebert XDC160 specifications ii Floor stand specifications water cooled Liebert Floor stand specifications Liebert XDC with 40 propylene glycol Floor stand specifications Liebert XDC with 40 ethylene glycol Inebert 0 260 spec ALI OMS n a ah T9 Bate ote Dom CRT 1 0 1 1 System Description SYSTEM DESCR
5. Hii SS mb IN l r i IN l n po tl f i i o i Captive nuts for right side mounting K fasteners o o o gt Captive nuts m p for right side Jp Ld mounting fasteners e m Lower Module Mounting Area Detail Area A Upper Module Mounting Area BladeFrame Lower Module Power Modules Mounting Area Locator stud for upper unit mounting angle 4 4 Liebert XDCF Piping Connection Methods and Points The assembly and connection means used for piping in the Liebert XD system are the same as those used in conventional refrigeration systems Observe all standard practices during installation and startup to prevent damage and contamination Supply piping connection 1s 1 2 OD copper pipe and return piping connection 1s 5 8 OD copper Both supply and return fittings are one shot connections These fittings contain pressurized R 134a refrig erant inside the Liebert XDCF A WARNING Risk of explosive discharge Can cause death injury and equipment damage Do not disconnect one shot connections after they have been connected Disconnection will release pressurized R 134a refrigerant from the Liebert XDCF The Liebert XDCF has supply and return piping access on the top of each module 39 4 4 1 Liebert XD Cooling Modules Liebert XDCF Liebert XDH Liebert XDO
6. 11 Determining Cooling Equipment 11 Implementing a Hot Aisle Cold Aisle 1 12 DESIGNING A LIEBERT XD 5 01 13 Determine Cooling Requirements and Select Liebert XD System 13 Calculate the Heat Load to be Handled by Liebert XD System 13 Selecting Liebert XD Cooling 14 Airflow Requirements for Liebert XD 14 Configuring a Liebert XD 14 3 5 1 Number of Modules Supported by a Liebert XDP or Liebert XDC 14 Placement lt 4 dou ex Saad S red EC e Erbe GR OE o eas eee ae 15 Liebert ADA Placement oa OA aX ESAS a DO AC EC 16 Liebert NX DO Placements gd dF i E ce ade Se ate hee dE ca 17 3 81 Determining Spacing of Liebert XDOs in an 1 17 3 8 2 Determining Vertical Placement of Liebert XDOs Above the Cold Aisle 18 hagebert XDV Unit Placements s 2o ua a ace oa DAES RAY PAGS BRE EA c 19 Liebert XDP Liebert Placement 0 0000 0c ccc eee 20 Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules 20 Liebert XD Piping System
7. ay m UN 7 r r Enclosure cover not shown for clarity 62 Liebert and Liebert Figure 66 Liebert XDP electrical enclosure knockout locations for field wiring User Interface Wall Box Wiring Liebert XD Module Condensate Connections optional depends on features supplied with Liebert XD Module Temperature Humidity Sensor Wiring XDP Input Power Knockout 0 ANE aS 29 5 5 NM OAY 1 Lin Ad PEN Pe MO m Vee a u a a A Alternate Knockout for Temperature Humidity Sensor Wiring Enclosure cover not shown for clarity Transformer 2 i Customer Power e Connection gt il a supplied on 460V ol e units only Power Block Disconnect Switch 0 10 Transformer 6 Pump Fuse 161 6 Blocks Fuse Blocks ei 5 Pump Contactors Hima HEEL s SHH i BR C Q 63 Liebert and Liebert Figure 68 Liebert XDP high voltage connections 50Hz Customer Power Connection Transformer 2 Ground Lug Disconnect Switch Power Block Pump Circuit Transformer 6 Breakers Busbar Fuse Blocks Pump Contactors Aransmormer 1 64 Specifications and Model Number Nomenclature 6 0 SPECIFICATIONS AND MODEL NUMBER NOMENCLATURE Table 29 Lieber
8. 45 7 60 9 30 30 Critical Equipment Critical Equipment Critical Equipment Critical Equipment Cooled air enters the Cooled air enters the idis 3t Hot air goes ts Ne into the hot eem into hot COLD AISLE aisle HOT AISLE COLD AISLE Cold Aisle Nominal Distance Spacing Table 3 can be used to determine the correct number and spacing of Liebert XDOs Table 3 Calculating quantity and spacing of Liebert XDO modules example below is Liebert XDO20 input information Total heat oad in the room KW AT Reserve capacity needed 1096 to 2596 of A is recommended Required cooling capacity KW 7 A B Existing planned Liebert Deluxe DS unit sensible DM kW Required Liebert XD system cooling capacity kW C D Number of Liebert XDO20s required E 20 rounded up 60Hz E 16 rounded up 50Hz Number of Liebert XDP Liebert modules required F 8 rounded up 60Hz and 50Hz Room area square feet Spacing of cold aisles center to center typically 12 16 ft 3 7 to 4 9m Area served by each Liebert XDO20 Spacing between each Liebert XDO 1 J 2 Required Liebert XD system cooling density E x 1000 H L OK if under 640 otherwise additional cooling is required from Liebert Deluxe or Liebert DS units 18 3 9 Designing a Liebert XD Solution Liebert XDV Unit Placement Liebert XDV units should be plac
9. Liebert XDO internal mounting Top and front electrical access points and terminal block standard Liebert XDO modules Top and front electrical access points Liebert XDO smart modules Liebert XDV dimensions Liebert XDV dimensions with one shot connection Suspending single Liebert XDV from Unistruts Suspending single Liebert XDV from the roof structure Alternative mounting methods mounting multiple Liebert XDV units iii Figure 49 Figure 50 Figure 51 Figure 52 Figure 53 Figure 54 Figure 55 Figure 56 Figure 57 Figure 58 Figure 59 Figure 60 Figure 61 Figure 62 Figure 63 Figure 64 Figure 65 Figure 66 Figure 67 Figure 68 Figure 69 Figure 70 Figure 71 Figure 72 Figure 73 Figure 74 Liebert DC dimensional EE eR EE EET e ER Ao ee cunt 51 Liebert ADC piping locations ed CREARE AO EO ERU RO AL 52 Positioning water glycol Liebert for placement on a floor stand 53 Piping locations floor stand and valve assembly 54 Front view of Liebert and electrical 1 55 Liebert electrical enclosure knockout locations for field wiring 55 Liebert high voltage connections primary disconnect switch 60Hz models 56 Liebert high voltage connections primary disconnect swit
10. To first cooling module or bypass flow controller Install replaceable filter dryer I in liquid supply line G gt Orientation determined by installer F Return From Cooling Units 47 1193 8mm 44 ag 6 152mm 23 584 2mm Dimensions are approximate and subject to change without notice A HotGas B Liaui DPNO00768 Refrigerant Lines E due Refrigerant Lines 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 Use double discharge risers in DX hot gas lines that are 15 feet 4 6m in height This will allow proper oil return to the compressors when the system is running at low loads Refer to the Liebert user manual SL 16671 for further information Table 25 Liebert XD Chiller piping connection sizes Air Cooled Models Outlet Connection Sizes OD Cu inches 52 Liebert and Liebert Figure 51 Positioning a water glycol Liebert XDC for placement on a floor stand A Return from Cooling Units B Supply to Cooling Units C Hot Gas Refrigerant Lines D Liquid Refrigerant Lines Customer E Threaded Water Female pee Supply Connections Customer e Water E uu Return SE Zz F Cup Fitting lt CP i
11. NOTES AN Control wiring must be Class 2 and installed in accordance with the National Electrical Code NEC AA Reguires shielded cable 59 Liebert XDC and Liebert XDP UT REMOTE ALARM DEVICE FOR INDICATION OF ALARM WIRE N O CONTACTS FROM REMOTE ALARM DEVICE AS SHOWN T CONTACT BY OTHERS INPUT CONDENSATION DETECTION ALARM WIIEN CLOSED CONTACTS REQUIRED COMMON ALARM OUTPUT FOR CONTACTS INDICATING AN ALARM CONDITION K3COM K3NC I TO REMOTE ALARM CIRCUIT BY OTHERS INPUT REMOTE SHUTDOWN FOR SHUTDOWN OF CONTROL CIRCUIT REMOVE JUMPER BETWEEN TERMINALS 37 amp 38 AND REPLACE WITH N C CONTACT L Om N C CONTACTS BY OTHERS LIEBERT SITE MONITOR FOR DIGITAL COMMUNICATIONS WITH LIEBERT SITE MONITORS ONLY CONNECT 2 WIRE TWISTED PAIR TO 77 amp 78 ALSO SEE SITE MONITOR INSTALLATION MANUAL Di 1 R or W I Liebert and Liebert 5 2 Liebert XDP Standard Features Heat Exchanger Brazed plate design with interwoven circuiting constructed of stainless steel plates copper brazed e Pumps Centrifugal type end suction internally cooled canned rotor design Cabinet and Frame Custom powder painted steel panels A hinged control access panel opens to a second front panel which is a protected enclosure for all high voltage components Frame is constructed of 14 gauge heliarc welded tubular steel and painte
12. modules with Liebert Flex Pipe in hot aisle cold aisle arrangement 1 8 1 8 1 System Description Liebert XDC Refrigerant Chiller The Liebert 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 room dew point at the sensors The Liebert XDC contains a refrigerant to refrigerant heat exchanger along with two tandem scroll compressor circuits This allows heat rejection to the outdoor ambient air by using either the air cooled condensers or water glycol shell and tube condensers much like a standard computer room air conditioning unit The Liebert XDC employs two remote sensors for redundancy to determine the temperature and humidity in the air and instantly adjusts refriger ant supply temperature to compensate for changing conditions Liebert XDC Minimum Load The Liebert XDC s minimum recommended operating load 1s 4096 of system nominal capacity For example a Liebert XDC160 60Hz system s minimum load would be 64 kW Loading below this value can unfavorably affect system operation Figure 9 Liebert XD Chiller unit System Description 1 9 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 XD cooling modules while preventing condensation by mainta
13. 1 22 Hiebert XD Pipins SIOpE refe acie PIOS Otero de dr ite ied e tog d 24 Bypass Flow GonbrollePs a eens ah chee Pd 24 Piping Installation Method Prefabricated Headers 21 Lebert XD Prex Pipe Uu exo deat adaa a I ach IE AREE ance e e he RES 31 Liebert XD Refrigerant a cansa die eb d RT RETA 32 Determining Refrigerant 32 3 18 1 Liebert XDP Liebert Pumped R 134a Circuit Volume 32 3 18 2 Calculating Refrigerant R134a 1 34 3 18 3 Liebert DX R 407e Circuit 34 3 19 3 20 3 21 4 0 4 1 4 2 4 9 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 0 5 1 5 2 6 0 Chilled Water Pine acd uan edm 36 NA Ae dni UE eoe D Sec edic pura cw c pou prae ec KN 36 Temperature Humidity Sensor 36 LIEBERT XD COOLING MODULES LIEBERT LIEBERT LIEBERT XDO AND LIE BERT XDV37 Liebert Standard Features aie px PC A RL ae GU RH EUR RE 37 Liebert XDCF Mechanical 1 38 Liebert XDCF Installat
14. 22mm FRONT diameter mounting holes DPNO000771 44 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO Liebert XDV Figure 42 Top and front electrical access points and terminal block standard Liebert XDO modules Knockouts for high voltage connections Grounding Lug A M X 1 tz D CE 7 m 2 9 2 77 2 AN 2 WA N High Voltage 2 Cover ANN SN NN 4 7 Nine 4 O_o LG Access to electrical terminal blocks is through hinged fan tray DPN000771 Figure 43 Top and front electrical access points Liebert XDO smart modules Knockouts for High Voltage Connections Standard Liebert Knockouts for XDO Modules Low Voltage Connections Liebert SS XDO Smart Modules 45 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Liebert XDV 4 9 Liebert XDV Standard Features Micro Channel Heat Exchanger The Liebert XDV unit includes one all aluminum micro channel heat exchanger Dual IEC Power Cords and Power Inlets The Liebert 115V 60Hz Liebert XDV unit 1s sup plied with two detachable 10 ft 3m power cords that attach to two IEC power inlets 1n the rear of the unit Each power cord has a NEMA 5 15P IEC 320 C14 plug at the opposite end The Lie bert 230V 60 50 Hz Liebert XDV unit 1s supplied with two non detachable 10 ft 3m power cords This feature allows the unit to be powered by two separate power sourc
15. __ Input 79A 84A 100A Dimensions inches mm 78 1981 83 2108 74 1879 34 58 879 gt gt e 2 Main unit only 1800 817 Main unit only as shipped Domestic 1945 882 Export 2093 949 Water Glycol Cooled Condenser Stand N A 1075 488 Water Glycol Cooled Condenser Stand as shipped N A 1150 521 Pipe Connections inches O D Cu Liebert XD Coolant supply to Liebert XD cooling modules 1 1 8 Liebert XD Coolant return from Liebert XD cooling modules Liquid line DX circuit 7 8 1 3 8 2 1 8 Hot gas line DX circuit Heat Rejection Equipment 95 F ambient air cooled condenser N A Number of XD Cooling Units Connected Maximum Minimum Liebert XDCF 10 Liebert XDH20 Liebert XDH32 Liebert XDO16 Liebert XDO20 Liebert XDV8 20 Liebert XDV10 16 7 Black matte finish heat fused powder coat ojo 5 UNA KOP IO Cabinet Exterior Finish Maximum Ambient Operating Temperature F 86 30 gt 2 lt Approvals CSA CSA Im 75 Specifications and Model Number Nomenclature Table 40 Floor stand specifications water cooled Liebert XDC160 Water Floor Stand 60Hz 189192G5 189192G3 Entering Fluid Temp F C 65 18 70 21 75 24 85 29 95 35 Performance Data Cooling capacity tons KW 46 1 162 3 46 1 162 3 46 1 162 3 46 1 162 3 44 5 156 5 Pressure Drop psi Ft Water 2 1
16. Base unit z Hard piped Revision row cooler S Smart modules P Pre charged level One Shot Coupling Removable Coupling 68 Specifications and Model Number Nomenclature Table 32 Liebert XDO16 specifications XDO16BK 1 XDO16BS 1 XDO16BS 1 XDO16SK 1 XDO16SS 1 XDO16SS 1 60Hz 60Hz 50Hz Cooling Capacity Nominal 85 F 29 4 C Nominal 85 F 29 4 C EAT 16kW 4 5 Tons EAT 14kW 4 0Tons Maximum 90 F 32 C EAT 17 3 kW 4 9 Tons Maximum 93 F 34 C EAT 17 3 kW 4 9 Tons Capacity rating is 55 F 13 C Entering Fluid Temperature and 50 F or lower dew point Power consumption 335 350 350 nominal watts Dimensions inches mm 22 1 2 572 not including electrical and piping access Unit only 150 68 Shipping weight 238 108 296 134 Installed with refrigerant 155 70 without options Airflow Nominal ft min m3 hr 2700 4587 2250 3822 Audible Noise 85 dBa sound power 83 dBa sound power Pipe Connections Refrigerant Supply from Liebert XDP Liebert XDC 1A OD oer Refrigerant Return to Liebert XDP Liebert XDC MOOD ODP Serviceable Parts Fan and electrical components Exterior Finish Bottom i Sides Front and Rear Black matte finish heat fused powder coat Exterior Finish Top Hot dipped galvanized steel Approvals CSA 60 Hz CSA 60Hz CE 50Hz 1 Refer to Figure 71 for full part number 69 Specifications and Model Number Nomenclature Table 33 Liebert XD
17. Block Secondary Ground Lug Disconnect Switch Transformer 2 Pump Circuit Breakers Power Block A F E Busbar Fuse Blocks slsisisisler Deum pem m Transformer 1 Liebert and Liebert Figure 59 Liebert heat rejection electrical connection points HEAT REJECTION ELECTRICAL CONNECTION POINTS Field supplied 24V Class 1 wiring to interlock heat rejection from pigtails 70 and 71A Compressor 1 circuit 70B and 71B Compressor 2 circuit 70C and 71C Dual Source relay optional Electrical handy box factory installed with cover Figure 60 Liebert XDC electrical enclosure knockout locations for Extra Low Voltage connections User Interface Liebert XD Module Condensate Wall Box Wiring Connections optional depends on features supplied with Liebert XD Module Temperature Humidity Sensor Wiring Alternate Knockout for Temperature Humidity Sensor Wiring Enclosure Cover Not Shown for Clarity 58 Figure 61 Liebert Extra Low Voltage field connection points Temperature Humidity Sensor Cable Provided with Temperature Humidity Sensor Board Control Display Panel Four thermostatic wires to be connected toTB3 Factory Wired P 9 5 Sensor s H TS 6 20 24 RAD1 50 XDOC 51 K3COM K3NO K3NCL mi NS HA HI HIH I BEXxM NEG
18. Capillary Lines are 48 1220mm 4 Limit Valve Distance from Condensers Customer Provided Piping DPN001419 Table 26 Liebert Water Glycol Piping Connection Sizes Piping Outlet Connection Sizes OD Cu inches Threaded Female Connection 2 1 8 for 1 WRV 2 5 8 for 1 1 4 WRV 53 Liebert and Liebert Figure 52 Piping locations floor stand and valve assembly 72 1828mm 24 Nominal 609mm TOP VIEW OF FLOOR STAND Shaded areas indicate a recommended clearance of 36 915mm for component Hot Gas 1 Liquid 1 access and water glycol piping Hot Gas 2 Outlet mE BUE se SA EA Pe A EN 20 1 4 AAN aa OGAN 2 Ao Te LA An eam pog 1 Circuit 1 Circuit 2 12 5 16 2 1 4 5 1 4 313mm 57 133 mm Inlet 26 15 16 684mm AN LEFT SIDE OF CABINET DPN001419 54 Liebert and Liebert Figure 53 Front view of Liebert XDC and electrical enclosures Primar Di Secondary Disconnect Switch y isconnect Switch 4 Status Lamps User Interface Enclosure Cover Latch Enclosure Cover Lat ge Hazardous Volta ge r Hazardous Volta Enclosure Cove Enclosure Cover SECONDARY PRIMARY ELECTRICAL ENCLOSURE PUMP SECTION ELECTRICAL ENCLOSURE COMPRESSOR SECTION
19. Main supply actual length per 1 1 8 OD copper tubing Main return actual length per 2 1 8 OD copper tubing Table 14 R 134a refrigerant charge for hard piped connector lines to and from any model Liebert XDH Liebert XDO Liebert XDV Refrigerant Charge Ib foot kg m Hard Piped Connector Length and Diameter 0 08 0 12 1 2 OD Liebert XDO Liebert XDH Liebert XDV supply connector actual length 0 26 0 39 5 8 OD copper tubing Liebert XDV return connector actual length 7 8 OD copper tubing Liebert XDV return connector actual length 0 04 0 06 7 8 OD copper tubing Liebert XDH Liebert XDO return connector actual length 0 07 0 1 1 1 8 OD copper tubing Liebert XDH Liebert XDO return connector actual length Table 15 R 134a refrigerant charge for Flex Pipe connector lines to and from any model Liebert XDO Liebert XDH Liebert XDV Liebert XDCF Return Line Diameter 5 8 Return Line Diameter 1 33 Designing a Liebert XD Solution 3 18 2 Calculating Refrigerant R134a Charge Example Using Tables 12 13 14 and 15 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 refriger ant required for one system combining a Liebert XDP with Liebert XD cooling modules Liebert XDCF Liebert XDH Liebert XDO and Liebert XDV The example below combines one Liebert XDP with 20 Liebert XDV8 cooling modules Table 16 Calculating refr
20. cooling modules with a cumulative model size of 160 Similarly the minimum number of modules connected to a Liebert or Liebert XDC may be calcu lated using the model size number for the Liebert XDP or Liebert and the modules See Table 2 Table 2 Maximum and minimum modules supported by a Liebert XDP or Liebert XDC Cooling Liebert Liebert Liebert Liebert 46 16 6 16 5 Teserxors2 s 2 5 2 enoo e a w Liebert XDV8 7 6 5 Different types of Liebert XD cooling modules may be connected to the same Liebert XDP or Liebert XDC as long as the sum of their cooling capacity does not exceed the supporting Liebert XDP s or Lie bert XDC s model size number NOTE Q Connecting only Liebert XDCF modules to a Liebert XD unit is not recommended because the Liebert XDCF heat loading is dependent on server airflow and server load Consult factory to determine if sufficient heat load is available from the server for the Liebert XD system to operate effectively 14 3 6 Designing a Liebert XD Solution Liebert XDCF Placement The Liebert XDCF 1 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 13 No cutting or drilling is required to attach the modules all mounting holes slots a
21. model 1ph 60 Hz 230V model 1ph 60 230V model 1ph 50 Hz Input power connections 2 power connections each model Full Load Amps 120V model 2 0A 230V model 1 0A Power consumption 180 190 190 190 nominal watts Height unit only 14 355 not including pipe connections Height including pipe 18 5 8 473 connections Weight Ib kg refrigerant 1000 1699 with rear inlet 833 1415 with rear inlet ft3 min m hr Bottom inlet airflow may be less Bottom inlet airflow may be less depending on restrictions inside cabinet depending on restrictions inside cabinet Audible noise 78 dBa sound power 73 dBa sound power Pipe Connections without Liebert Flex Pipe Refrigerant Supply from Liebert 1 2 OD Cu optional 1 2 threaded coupler flex piping XDP Liebert XDC 1 Airflow Nominal Refrigerant Return to Liebert XDP Liebert 5 8 OD Cu optional 3 4 threaded coupler flex piping XDC Serviceable Parts Fans and electrical components p Exterior Black matte finish heat fused powder coat Smart Module control board factory installed Dry contact 24VAC 1 maximum Rus R 134a refrigerant one shot connections Refrigerant Agency Approvals CSA 60Hz CSA 50Hz CE 50Hz 1 Refer to Figure 72 for complete part number 72 Specifications and Model Number Nomenclature Table 37 Liebert XDV10 specifications XDV10BK 1 XDV10BT 1 XDV10BS 1 XDV10SK XDV10ST 1 XDV10Ss 1 Cocina Nomina
22. of each module Supply piping connection 1s 1 2 OD copper pipe and return piping connection is 7 8 OD copper Corner Stabilizers A stabilizer in each corner permits rolling the Liebert with greater ease and less chance of tipping Air Diffusers Two diffusers one on the upper half of the unit and one on the lower half enhance flow of cooling air Uni directional and bi directional diffusers are available ui db Features Liebert XDH Smart Module Smart modules will allow remote shutdown fan failure alarms and automati cally switching the second fan bank On and Off The controls save energy by permitting the unit to turn one fan in each fan bank Off based on the supply and return temperature For electrical connection details refer to the Liebert XDH user manual SL 17210 available on the Liebert Web site ww w liebert com Refrigerant Precharge The Liebert XDH can be precharged with refrigerant The unit will have one shot fittings and will be pressurized The one shot Liebert XD Flex Piping will also be precharged with refrigerant Field Installed Flexible Piping for use with prefabricated piping assemblies Field installed flexible piping kits are available in lengths of 4 6 8 and 10 feet 1 2 1 8 2 4 and 3 meters Con nection style to the unit end may be straight or 90 degrees with one shot style couplings or remov able couplings Flex pipes with one shot connections will have pressurized R
23. to the Liebert XDP are near the bottom of the unit Refer to the Liebert XDP user manual SL 16644 for further information Piping is routed downward from the unit to chilled water piping under the raised floor Connections are made using standard practices for copper chilled water piping Field supplied Victaulic connections may be used to simplify installation in existing facilities Refer to Table 43 for additional information Electrical Make all wiring and electrical connections in accordance with local and national codes Refer to the applicable table in 6 0 Specifications and Model Number Nomenclature regarding wire size and circuit protection requirements Refer to electrical schematic when making connections Temperature Humidity Sensor Locations The display panel sensor amp Liebert iCOM sensor shipped loose must always be installed in the con ditioned space The display panel sensor amp Liebert iCOM sensor may be mounted on the Liebert XDC XDP s front door if the unit 1s located 1n the area that 1t conditions The remote temperature humidity sensor for the Liebert XDP and the Liebert XDC should be located in the higher temperature portion of the cold aisle where the XD modules are located Alternatively it can be placed on the return air side of the primary air mover e g Liebert DS DE in the room if it rep resents the conditions where all the XD cooling modules are located It should not be installed where ambient air m
24. 134a Flex pipes with removable connections will have a low pressure nitrogen charge Connection to the prefabricated piping assembly 1s with a threaded coupler For information on acquiring the correct kit for your installation refer to DPN000780 available by calling 1 800 LIEBERT and from your local Emer son representative 40 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Liebert XDV Tie Down Bracket An optional tie down bracket may be installed on the Liebert XDH to secure it in the row The bracket keeps space between the Liebert XDH and adjacent equipment constant preventing vibration Figure 37 Liebert XDH dimensions 12 305mm lt gt 80 2032mm 78 1981mm FRONT 1067mm FRONT Figure 38 Supply and return piping connections Top of Liebert Detail 6 152mm 3 5 8 92mm P v 1 2 Supply Upper buds Refrigeration Circuit X a 7 EIS tm 7 8 Return Upper Refrigeration Circuit Rear x of Liebert Rear of XDA 7 8 Return Lower Refrigeration Circuit E SAPP INE LR Refrigeration Circuit p Detail A DPN001180 41 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Liebert XDV 4 7 Liebert XDO Standard Features Micro Channel Heat Exchanger The Liebert unit includes two all alumi
25. 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 FIGURES Liebert XDP generic piping layout llle RR RR RA es Liebert generic piping layout llle res Liebert XDA air flow enhancer on equipment 1 Liebert XDCF units on Egenera s BladeFrame EX cabinets Liebert XDH horizontal cooling module in hot aisle cold aisle arrangement Suspended Liebert XDO modules in hot aisle cold aisle arrangement Top mounted Liebert XDV modules with hard piping in hot aisle cold aisle arrangement Top mounted Liebert XDV modules with Liebert Flex Pipe in hot aisle cold aisle fhe gd tre RO Dee Sows 9 SU Cas eS Re Aa LATA CDBG BES PE ES TL reo rtv SLRS SAS HG Mi Be achat Eri Ge tie Be ans ok Rake es aca eee Een CRT E e EORR See Gay ees Liebert XD connection port kit RR eee eens Hot aisle cold aisle arrangement with under floor Liebert XDCF unit mounting locations 0 0 0 ee ee rh Liebert placement top Liebert XDO spacing horizontal side view Liebert placement over cold 1
26. 37mm 13 7 16 Sao 2 gt esc 0 0 c 555 os 2 341mm imensions same d Do cot 5 2 9 9 225 0 gt gt co 205 e pe lk Con 2 E OK v nr bd BACK 38 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Liebert XDV 4 3 Liebert XDCF Installation Considerations No cutting or drilling 1s 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 35 Figure 35 Liebert XDCF unit mounting locations Egenera BladeFrame Detail Area B i ji T e o 1 l F7 B995 E 1 BZ OOq04 E 8 Locator stud for lower r unit mounting angle I rr og gd Eg Eg po iN n rp
27. 4 5 8 117mm Return DPNO000773 Table 9 Five port prefabricated piping legend Branch Piping Standard Run Outside Diameter ODS 1 1 8 1 3 8 inch mm Height H 8 3 4 222 8 1 2 216 Length L 6 3 4 171 7 178 Outside Diameter ODR 2 1 8 2 5 8 inch mm Height H 10 1 2 267 10 1 2 267 Length L 8 3 4 222 9 1 8 232 Pipe runs greater than 60 equivalent feet 29 Designing a Liebert XD Solution Figure 31 Ten port prefabricated piping for Liebert XD cooling modules APIS de 5 7 L AIR 0 297 AD INI gt 5 hi RC g y NINS 4 i gt SA 3 se we eK ge Ww 55 cd S v o 5 B 3048mm 7 7 16 189mm nd UD UD o3 IE md UB na aa o qm que px punc oo ew ol Ko AN AN AN 0 IA KI a 7 S7 Sum Ye 4 16 9 16 7 7 16 Ref Typ Supply 610mm 424mm 189mm Ref Typ per Typ gis KAI a 9 1 16 230mm Ref Typ Return DPNO000773 Table 10 Ten port prefabricated piping legend Branch Piping Standard Run Outside Diameter ODS 1 1 8 1 3 8 inch mm Height H 8 3 4 222 8 3 4 222 Length L 6 3 4 171 6 7 8 175 Outside Diameter ODR 2 1 8 2 5 8 Return inch mm Height H 10 1 2 267 10 1 2 267 Length L 8 3 4 222 9 1 8 232 Pipe runs greater than 60 equivalent feet 30 Designing a Liebert XD Solution 3 16 Liebert X
28. 6 2 4 9 11 3 5 4 12 5 20 7 47 8 27 3 63 1 Heat Rejection Equipment Piping Connections Water glycol supply and return lines 2 1 8 2 1 8 2 1 8 2 1 8 2 1 8 Table 41 Floor stand specifications Liebert with 40 propylene glycol XDC160 Glycol Floor Stand 60Hz 40 PG 189192G3 Performance Data Heat Rejection Equipment Piping Connections Water glycol supply and return lines 2 5 8 When multiple drycoolers are used ensure flow is balanced 76 Specifications and Model Number Nomenclature Table 42 Floor stand specifications Liebert with 40 ethylene glycol XDC160 Glycol Floor Stand 60Hz 40 EG 189192G3 Performance Data Heat Rejection Equipment Piping Connections Water glycol supply and return lines 2 5 8 When multiple drycoolers are used ensure flow is balanced Figure 73 Liebert XDC model number nomenclature Example XDC160AA XD C 160 A A Chiller Place holder Place holder Revision unit level Liebert Model size Voltage phase frequency Place holder Xtreme heat A 7 460V 3ph 60Hz Density system M 380 415 3ph 50Hz 77 Specifications and Model Number Nomenclature Table 43 Liebert XDP160 specifications 160kW 46 Tons 60Hz 140kW 40 Tons 50Hz Each capacity is based on 45 F 7 C entering water temperature and Cooling Capacity Nominal Sn 140gpm 530lpm water flow rate Capacity is reduced when glycol mixtures are used
29. D Flex Pipe Kit Liebert XD 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 with one shot or removable connec tions Connection to the prefabricated piping assembly is a threaded coupler For data on acquiring the correct kit for your installation see Table 11 Table 11 Liebert XD Flex Pipe assemblies supply and return Liebert XDV Liebert XDCF Liebert XDO Liebert XDH One Shot Removable One Shot One Shot One Shot Removable Description Couplings Couplings Couplings Couplings Couplings Couplings Lions 12m 90 1seserca 18786664 1656504 2x 186865G4 2 18786464 8tiong 8m 90 18656761 18786661 1 2x 1868651 2xIS7EBIGI Citing iom s 18656762 18788862 86865G2 2x 18050502 2x 18786462 Min Bend Radius Supply 1 Min Bend Radius Return 1 The minimum bend radius is for the flexible portion of the Liebert XD Flex Pipe Because a section of hard pipe is at each end of the Liebert XD Flex Pipe the minimum bend radius can be larger 2 Top Module 3 Bottom Module 7 178mm 7 178mm 8 203mm 9 220mm 31 3 17 3 18 3 18 1 Designing a Liebert XD Solution 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
30. E Precision Cooling For Business Critical Continuity Liebert Xtreme Density System Design Manual 4 4 EMERSON Network Power 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 3 0 3 1 3 2 9 9 9 4 3 0 3 6 3 7 3 8 3 9 3 10 3 11 3 12 3 13 3 14 3 15 3 16 3 17 3 18 TABLE OF CONTENTS SYSTEM DESCRIPTION 4 1 32 23 3 0 1d dee dee Dog dus ec ceo 1 European Union Fluorinated Greenhouse Gas Requirements 1 Genere Pipis Layout acea 3 201 Got Sb fed ana beb du AO ted s ve d pd dieu dod d 2 Liebert XDA Air Flow Enhancer eee RR RRR RR 3 Liebert XDCF Liebert XD CoolFrame eeeeeee ee ee 4 Liebert XDH Horizontal Cooling 5 Liebert XDO Overhead Cooling Module RII 6 Liebert XD V Vertical Above Cabinet Cooling 4 T Liebert XDC Refrigerant Chiller ii 8 hor Lebert Mamin um Load x MA Seth b dd diee 8 Inebert XDP Puimpin EIU s ues duce aute ule kebab week hy ORS von ACER SEG BR 9 LO Liebert XDP Minimum Lodd bem xe CR RR na RR Oeo Rp d es 9 Hieper XAD cuu d ned bee esr CE ORA 3 eser dicenda eae Sed hee 10 ebert 5a os d EE eae Ea E ERE EAR i Ra nb ERES 10 STARTING A NEW EQUIPMENT COOLING PROJECT
31. Figure 54 Liebert XDC electrical enclosure knockout locations for field wiring Knockout for Input Power Enclosure Cover Not Shown for Clarity 55 Liebert and Liebert Figure 55 Liebert XDC high voltage connections primary disconnect switch 60Hz models Transformer Fuse Block Customer Power Connection Compressor Fuse Blocks Primary Power Block Ground Lug Primary Disconnect Switch Electronic Hot Gas Compressor Contactors Transformer 3 Bypass Controllers Relay Figure 56 Liebert XDC high voltage connections primary disconnect switch 50Hz models Compressor Customer Circuit Breakers Power Busbar Primary Power Block Connection Lo peepee foo coo efo esas O Wire o o e eje ojo e ojo e Ground Lug LEEI 5 EEIT Primary EES Disconnect el If fe Switch Compressor Transformer 3 Relay Electronic Hot Gas Contactors Bypass Controllers 56 Liebert and Liebert Figure 57 Liebert XDC high voltage connections secondary disconnect switch 60Hz models Power Connection From Primary Power Block Ground Lug oecondary Disconnect Switch Transformer 2 Pump Circuit Breakers oecondary Power Block Transformer Fuse Block Pump Contactors Transformer 1 Figure 58 Liebert XDC high voltage connections secondary disconnect switch 50Hz models Power Connection From Primary Power
32. IPTION 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 Liebert XDC Liebert XD Chiller cools and pumps refrigerant to cooling modules Liebert XDP Liebert XD Pumping unit pumps refrigerant to cooling modules Liebert XDA mounts on the rear of the equipment cabinet Liebert XDCF Liebert XD CoolFrame mounts on the rear of an Egenera BladeFrame EX cabi net Liebert XDH Liebert XD Horizontal row cooler integrated into hot aisle cool aisle room layout Liebert XDO Liebert XD Overhead unit suspended from the ceiling structure Liebert XDV Liebert XD Vertical unit mounted on top of the equipment cabinet or suspended from the ceiling structure Systems combining Liebert XDO and Liebert units can remove more than 20 kW 5 7 tons of heat per cabinet set of Liebert XDCF modules also can remove 20kW 5 7 tons of heat from an Egenera BladeFrame EX cabinet A system with Liebert units can remove more than 30kW 8 5tons of heat per rack For minimum Liebert XDP and Liebert XDC load recommendations see 1 9 1 Liebert XDP Mini mum Load 1 8 1 Liebert XDC Minimum Load and Tables 39 and 43 The Liebert XD system also performs at high efficiency rat
33. O20 specifications XDO20BK 1 XDO20BS 1 XDO20SK XDO20SS Nominal 92 F 33 EAT Nominal 92 F 33 EAT 20kW 5 7 Tons 17 7kW 5 Tons Maximum 100 38 EAT 23 1kW 6 6 Tons Maximum 103 39 EAT 23 1kW 6 6 Tons EAT e rating is 55 F 13 C Entering Fluid Temperature and 50 F 10 C or lower dew Electrical Requirements nominal watts 22 1 2 572 not including electrical and piping access Weight Ib kg Cooling Capacity Unit only 150 68 Shipping weight 238 108 296 134 Installed with refrigerant 155 70 without options Airflow Nominal ft min m3 hr 2100 4590 2250 3820 Audible Noise 85 dBa sound power 83 dBa sound power Pipe Connections without flex pipe Refrigerant Supply from Liebert XDP Liebert Refrigerant Return to Liebert XDP Liebert Serviceable Parts 1 2 OD Copper 7 8 OD Copper Fan and electrical components Exterior Finish Bottom Sides Front and Rear Black matte finish heat fused powder coat Exterior Finish Top Hot dipped galvanized steel Agency Approvals CSA 60 Hz CE 50Hz 1 Refer to Figure 71 for full part number 70 Specifications and Model Number Nomenclature Figure 71 Liebert XDO model number nomenclature Example XDO20BK XD O 20 B K li Liebert ome 16 Model size K 120V 1ph 60Hz Domestic Packaging heat density 20 Model size S 220 240
34. V 1ph 60Hz E Export Packaging system 220 240V 1ph 50Hz Overhead B Base unit Hard Piped Revision cooling S z Smart modules P z Pre charged level module One Shot Coupling Removable Coupling Table 34 Options for Liebert XDO20 and Liebert XDO16 Option Liebert XDO 60Hz Models Liebert XDO 50Hz Models 2 Liebert XDOs per lighting unit 120V or 277V 4 standard fluorescent tubes not included 0 9A per 120V light fixture Smart Module control board factory installed Pre Charged Refrigerant R 134a Refrigerant one shot connections Table 35 Liebert XDO dimensions domestic and export Shipping Dimensions inches mm Unit Dimension Lighting Fixtures ship loose Dry contact 24VAC 1 maximum Domestic Length Width Height Length Width Height Length width Height All Models 84 2134 30 762 30 762 83 2108 30 762 30 762 Tn Includes piping connections 71 Specifications and Model Number Nomenclature Table 36 Liebert XDV8 specifications XDV8BK 1 XDV8BT 1 XDV8BS XDV8SK XDV8ST 1 XDV8SS an CUR Nominal 92 F 33 EAT 8kW 2 3 Tons Nominal 92 F 33 C EAT 7kW 2 0 Tons g apac ty Maximum 95 F 35 C EAT 8 7kW 2 5 Tons Maximum 103 F 39 C EAT 8 7kW 2 5Tons Capacity rating is 55 F 13 C Entering Fluid Temperature and Conditions 50 F 10 C or lower dew point rear air inlet Electrical Requirements 120V
35. VAC 1A maximum Pre Charged Refrigerant R 134a refrigerant one shot connections Airflow Nominal ft min m hr Agency Approvals CSA 60Hz CSA 50Hz CE 50Hz 1 Refer to Figure 72 for complete part number 73 Specifications and Model Number Nomenclature Table 38 Liebert XDV dimensions domestic and export Shipping Dimensions Unit Dimensions Unpacked Length x Width x Height Length x Width x Height inches mm inches mm All Models 48 x 40 x 24 1 4 45 4 5 x 30 3 4 x 33 39 1 2 x 22 7 8 x 14 1219 x 1016 x 616 1163 x 781 x 839mm 1003 x 581 x 356 Figure 72 Liebert XDV model number nomenclature Example XDV10BK XD V 10 B K Liebert Xtreme 8 Model size 120V 1ph 60Hz Domestic heat density 10 Model Size S 230V 1ph 50Hz Packaging system T 208 240V 1ph 60Hz E Export 220 240 1ph 50Hz Packaging Vertical top B Base unit Hard piped Revision cooler S Smart modules P Pre charged level One Shot Coupling R Removable coupling 74 Specifications and Model Number Nomenclature Table 39 Liebert XDC160 specifications XDC160 Air XDC160 Water Glycol 189192G3 90 100 F XDC160AA XDC160AM 189192G5 65 85 F See Tables 40 41 and 42 for Cooling Capacity tons kW 46 160 37 130 Water Glycol performance data 40 of system nominal capacity 64 kW for 60Hz unit Electrical Requirements Input 460V 3ph 60Hz 380 415V 3ph 50Hz 460V 3ph 60Hz
36. and Liebert XDV Header System The Liebert XDCF module system requires use of the Liebert XD prefabricated piping assembly or port kit The prefabricated piping 1s compatible with the flex pipe required to attach to the Liebert XDCF modules Figure 36 Liebert XDCF supply and return piping access points 4 5 4 6 Return Pipe 5 8 diameter 7 5 16 186mm 3 9 16 90mm Pipe locations and dimensions are the same for upper and lower units 1 7 16 Supply Pipe 37mm 1 2 diameter Liebert XDH Standard Features Dual Refrigeration Circuits Each Liebert has two refrigeration circuits in the upper half of the unit and one in the lower half Dual refrigeration circuits permit cooling levels in response to server room conditions The dual refrigeration circuits permits interlaced connection of two refrigerant sources to enhance system reliability Dual Power Cords and Power Inlets The Liebert XDH 1s supplied with two 2 detachable power cords 10 ft 3m long that attach to two IEC power inlets on the rear of the unit Each power cord has a NEMA 5 15P IEC 320 C14 plug at the opposite end The dual power cords allow the unit to be powered by two separate power sources If the secondary power cord 1s con nected to a UPS the Liebert unit fans will continue to operate if utility power fails Top Piping Access The Liebert XDH has supply and return piping access on the top
37. ant required do NOT oversize the piping Figure 23 Generic piping layout Condenser or ters XD Supply Module Lines Gedling Liebert XDCF Liebert mes MN Liebert XDO or Liebert XDV or Drycooler Liebert XDP Pumped Refrigerant R134a dd Lines To Chiller Condenser pc sn ea Liebert XDP Pumped Refrigerant R134 23 3 13 3 14 Designing a Liebert XD Solution 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 Bypass Flow Controllers To ensure the XDP XDC pumps operate within the optimum range some installations require one or more bypass flow controller s These devices are added to the field piping and simulate the flow of additional cooling modules Each bypass flow controller should be installed with one shutoff valve to allow the controller to be dis abled when cooling modules are added to a Liebert XD system If bypass flow controllers are required they should be connected between the main supply and the main return lines of the field piping The connection points to the main supply an
38. as a ball valve for manual shutoff Each kit contains one supply and one return port Two kit sizes are available Supply pipe 1 1 8 return pipe 2 1 8 Supply pipe 1 3 8 return pipe 2 5 8 Figure 11 Liebert XD connection port kit Return valve shown Supply valve appearance is similar but is smaller Table 1 Liebert XD field installed port kits header connection size Supply Header Return Header Assembly P Diameter Diameter 183169G3 1 1 8 183169G4 1 3 8 10 Starting a New Equipment Cooling Project 2 0 STARTING A NEW EQUIPMENT COOLING PROJECT 2 1 Determining Cooling Equipment Needs pe oe ce uc ED 11 12 19 14 15 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 What monitoring requirements are desired or needed Who will be involved in this project stakeholders Is there existing computer room environmental cooling systems for humidity control and filtration Is the vapor barrier sufficient Is a chilled water system available What 1s the system s capacity What 1s the system s
39. at Liebert s Web site www liebert com 34 Designing a Liebert XD Solution Figure 32 Additional oil requirements for refrigerant charge Each circuit contains ZRT250KCE Tandem D 140 130 120 5 410 O 5 100 90 n 80 8 70 5 60 D 40 Y 50 O 30 20 O 10 o 0 lt 0 100 200 300 400 XDC160 System Refrigerant Field Charge Per Circuit Pounds To calculate the oil required use the following formula Additional Oil Required per Circuit Refrigerant Charge 0 4 22 Enter the refrigerant charge 1n pounds to determine the oil required in ounces NOTICE Risk of improper compressor lubrication Can cause compressor and refrigerant system damage Failure to use oil types viscosities and quantities recommended by the compressor manufacturer may reduce compressor life and void the compressor warranty See oil types specified in Table 18 Do not mix polyol ester POE and mineral based oils Do not mix oils of different viscosities Consult Emerson or the compressor manufacturer if questions arise Table 18 Compressor oil types Refrigerant Type Compressor Type R o RAMe Copeland Scroll and Digital Scroll OIL ISO 32 Viscosity Use Copeland POE Oil ULTRA 22 CC Mobil EAL Arctic 22 CC Copeland brand Ultra 22 CC Copeland brand Ultra 32 CC Copeland brand Ultra 32 3MAF Mobil EAL A
40. bert XDV Figure 45 Liebert XDV dimensions with one shot connection pM CENT S E Top of Liebert XDV A N a N 4 gt 4 oSCHRADER VALVE nd SUPPLY IN s O RETURN OUT 7 Supply E Tal 7 Connection 1 2 Detail Area I QA t 2 V iy O Return Ey Connection N 5 8 M T e T m e etail A Figure 46 Suspending single Liebert XDV from Unistruts Bolt 3 8 16 nut and washer provided in kit Unistrut field supplied Hanger brackets available from factory purchased separately and shipped loose Bolt a bracket to each corner of the XDV Liebert XD Cooling Modules Liebert Liebert Liebert XDO and Liebert XDV Figure 47 Suspending single Liebert XDV from the roof structure 3 8 16 all thread bolts a field supplied typical Hanging XDV unit To prevent bypass air from recirculating through the XDV without it passing through the cabinet this space between the hanging XDV and the cabinet must be blocked 49 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Liebert XDV Figure 48 Alternative mounting methods mounting multiple Liebert XDV units Attach hanger brackets to each corner of each XDV This arrangement permi
41. cations BEEN Emerson Network Power the global leader in enabling business critical Technical Support Service continuity ensures network resiliency and adaptability through _ Web Site a family of technologies including Liebert power and cooling www liebert com Monitoring technologies that protect and support business critical systems Liebert solutions employ an adaptive architecture that responds 800 222 5877 Liebert monitoring emerson com to changes in criticality density and capacity Enterprises benefit Outside the US 614 841 6755 from greater IT system availability operational flexibility and Single Phase UPS reduced capital equipment and operating costs 800 222 5877 upstech emersonnetworkpower com Outside the US 614 841 6755 Three Phase UPS 800 543 2378 powertech emersonnetworkpower com Environmental Systems 800 543 2778 Outside the United States 614 888 0246 Locations United States 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 Europe Via Leonardo Da Vinci 8 Zona Industriale Tognana 35028 Piove Di Sacco PD Italy 39 049 9719111 While every precaution has been taken to ensure the accuracy Fax 39 049 5841 257 and completeness of this literature Liebert Corporation assumes no Asia responsibility and disclaims all liability for damages resulting from use of 7 F Dah Sing Financial Centre this information or for any errors or omissions O 2008 Liebert Corporation 108 Glouc
42. ch 50Hz models 56 Liebert high voltage connections secondary disconnect switch 60Hz models 57 Liebert high voltage connections secondary disconnect switch 50Hz models 57 Liebert heat rejection electrical connection 58 Liebert XDC electrical enclosure knockout locations for Extra Low Voltage connections 58 Liebert Extra Low Voltage field connection points 59 Bieber S DPoimetntisioflSas uds LAS PES SE SAN PERI SO DUNMERIE S ede 60 Liebert XDP piping access points and external features 61 Front view of Liebert XDP and electrical enclosure llle 62 Liebert XDP electrical enclosure knockout location for hazardous voltage wiring 62 Liebert XDP electrical enclosure knockout locations for field wiring 63 Liebert XDP high voltage connections 60HZ 63 Liebert XDP high voltage connections 50HZ 64 Liebert XDCF model number nomenclature 0 0 ce ee nee eens 65 Liebert model number nomenclature 0 0 eee eee eens 68 Liebert XDO model number 1 71 Liebert model number 1 74 Liebert model
43. chilled water supply temperature c Does the chilled water supply temperature vary during the year or is the temperature constant How much power 1s available for cooling equipment What is the maximum distance between the Liebert XDP Liebert unit and the farthest Liebert XD cooling module in the proposed layout If an air cooled Liebert XDC is used is an area available for the remote condenser Does the Liebert XD system refrigerant volume exceed 13 1b 1000ft If so a refrigerant detection and removal equipment may be required Refer to 3 17 Liebert XD Refrigerant 11 Starting a New Equipment Cooling Project 2 2 Implementing a Hot Aisle Cold Aisle Design A best practice is to place equipment racks in alternating rows of cold aisles and hot aisles This is best accomplished when the layout of the file server farm area is first being planned It is exceedingly more difficult to accomplish when the computer room is already populated with operating hardware In the cold aisle the equipment racks are arranged face to face so the cooling air from the computer room cooling unit discharged up through the perforated floor tiles is drawn into the face of the com puter hardware and exhausted out the back of the equipment rack into the adjacent hot aisles Hot aisles are literally hot because the objective of the alternating cold and hot aisle design 1s to sepa rate the source of cooling air from hot air discharge which retur
44. d return lines should be 1n a convenient and accessible location between the Liebert XDP Liebert XDC and the first Liebert XD module in the circuit See Figures 25 and 24 for piping details of the bypass flow controller Refer to Table 6 to determine the number of bypass flow controllers needed based on the total nomi nal cooling capacity of the cooling modules in each Liebert XD system Table 6 Bypass flow controllers for Liebert XDC or Liebert XDP based systems Cooling Modules Required Number of Bypass Flow Controllers Cumulative Model Size Liebert XDP Liebert XDC 64 to 95 96 to 127 Figure 24 Bypass flow controller details dimensions 7 8 2 2mm Aa MT Figure 25 Bypass flow controller arrangement 7 8 Refrigerant Grade Return Full Port Ball Valve Main Field Supplied and Field Installed Flow Direction Bypass Flow Controller ly Supply Field Installed Main 24 Designing a Liebert XD Solution Figure 26 Bypass flow controller piping 9 hf d Bypass Flow Controllers 4 Coolant Supply Filter Dryer Coolant Assembly Return 25 Designing a Liebert XD Solution Figure 27 Hard pipe connection diagram for Liebert cooling modules Refer to Table 5 for details Return Main seen from end 2 1 8 O D Or 2 5 8 O D Rec
45. d using an auto deposition coating system Liebert iCOM The Liebert offers the highest capabilities in unit control communication and monitoring of Liebert Precision Cooling units The Liebert iCOM is a factory installed assem bly Operating conditions and status are indicated on the unit display which 1s mounted either on the unit or on the wall depending on application details see user manual SL 16644 The control system also monitors unit operation and activates an alarm when any of the specified factory pre set conditions are exceeded The unit includes two temperature humidity sensors to aid in effective cooling Figure 62 Liebert XDP dimensions A B ovesi Overall Side Panel E 1981 1 25mm 2 3 8 SN 60mm 11 279mm Floor Cutout Dimensions Unit Base The shaded area indicates a recommended clearance Unit Base of 36 914mm for component access Unit Dimensional Data DPNO001598 Table27 Liebert dimensions Dimensional Data inches mm Shipping Weight Ib kg A B gt C D E Domestic Export SAM 38 965 34 864 33 1 8 841 33 838 36 914 990 449 1067 484 The dimension does not include the bezel of the disconnect switch 60 Liebert and Liebert Figure 63 Liebert XDP piping access points and external features To first cooling module or bypass flow controller Close this o Install re
46. ect number of Liebert XDV modules Table 4 Determine aem number of Liebert XDV modules eee ee below is Liebert XDV10 Input Information Total heat load in the room kW Reserve capacity needed 1096 to 2596 of A is recommended GE Required cooling capacity KW A Existing planned Liebert Deluxe DS sensible capacity kW Required Liebert XD system cooling capacity kW C D Number of Liebert XDV10 modules required E 10 rounded up 60Hz E 8 rounded up 50Hz Number of Liebert XDP Liebert modules required F 16 rounded E n ma and 50Hz Room area square feet LL I LL Area served by each Liebert XDV10 Required Liebert XD system cooling density E x 1000 H OK if under 580 for 12 foot cold aisle spacing OK if under 435 for 16 foot cold aisle spacing Otherwise additional Liebert Deluxe or Liebert DS unit capacity is needed 19 Designing a Liebert XD Solution 3 10 Liebert XDP Liebert Placement The Liebert XDP Liebert XDC may be placed in the critical space or in an adjacent equipment room The allowable distance between the Liebert XDP Liebert and its connected cooling modules is determined by the piping design and by the amount of refrigerant required Refer to 3 17 Liebert XD Refrigerant and 3 12 Liebert XD Piping System Design The maximum height of any of the main or connecting piping should be no more than 20 feet 6m abo
47. ed 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 1ts front bottom edge 1s flush with the front top edge of the cabinet Placing the unit farther back on the top of the unit will restrict airflow 1nto the cold aisle Placing the unit farther to the front will decrease the amount of hot air drawn into the unit Figure 17 Positioning Liebert dri on top of cabinet Liebert XDV is suspended from ceiling structure the separation between the rack and the Liebert XDV should be held to less than 1 25mm If this is not possible an air blocker should be added to prevent unwanted airflow between the hot aisle and the cold aisle CORRECT INCORRECT INCORRECT Liebert XDV is flush with Liebert XDV is Liebert XDV front edge of rack too far from front hangs over front edge of rack edge of rack Both of the Liebert XDV s power cords should be connected to power sources If only one power source is available then only the power cord labeled SECONDARY should be connected to the power source Piping for the Liebert XDV is routed upward to the main return and supply pipes to and from the Lie bert XDP Liebert XDC Table 4 below may be used to determine the corr
48. eight Ib kg Airflow Nominal ft min m3 hr 2500 4248 2428 4125 Audible Noise Sound Power 81 dBa 81 dBa Cooling Capacity Pipe Connections Refrigerant Supply 1 2 OD Cu optional 1 2 threaded one shot coupling on the unit Refrigerant Return 7 8 OD Cu optional 7 8 threaded one shot coupling on the unit Serviceable Parts Fans and electrical components Cabinet Exterior Finish Black matte finish heat fused powder coat Smart Module control board factory installed Dry contact 24VAC 1 maximum Pre Charged Refrigerant Air Diffusers R 134a refrigerant one shot connections Uni directional or bi directional Agency CSA 60Hz CE 50Hz CSA 50 60Hz Approvals 1 Refer to Figure 70 for complete part number 66 Specifications and Model Number Nomenclature Table 31 Liebert XDH32 specifications XDH32BK 1 XDH32BS 1 XDH32SK XDH32SS 1 60Hz 50 60Hz XDH32 60Hz Nominal 98 F 37 C EAT 30kW 8 5 Tons XDH32 60Hz Maximum 105 F 41 C EAT 34kW 9 7 Tons XDH32 50Hz Nominal 98 F 37 C EAT 30kW 8 5 Tons XDH32 50Hz Maximum 103 F 39 EAT 34kW 9 7 Tons Cooling Capacity Capacity rating is 55 F 13 C Entering Fluid Temperature Conditions and 50 F 10 C or lower dew point Electrical Requirements 220 240V 1ph 50Hz CE Input 208 240V 1ph 60Hz CSA Input Power Connections Two IEC320 C14 power inlets and two IEC Two IEC320 C14 power inlets and two IEC
49. em does not exceed 650lb 294 8kg The maximum amount of refriger ant is 650lb 294 8kg Liebert XD loop NOTE Local codes might permit exceeding the maximum refrigerant limit above if a refrigerant detector and an exhaust system are installed Installing oxygen sensors may meet some local codes Determining Refrigerant Volume After the preliminary system design is completed Tables 12 through 21 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 12 13 14 and 15 are actual pipe lengths not eguivalent pipe lengths Liebert XDP Liebert XDC Pumped R 134a Circuit Volume This is the refrigerant circuit from the Liebert XDP Liebert to the Liebert XD cooling module NOTE System refrigerant volume calculations in Tables 12 13 14 and 15 are based on a fully loaded system Additional charge may be required for lightly loaded systems 32 Designing a Liebert XD Solution Table 12 System R 134a charge for a Liebert XDP Liebert with any model Liebert XDH Liebert XDO Liebert XDV Liebert XDCF Per Liebert XD Unit Refrigerant Charge Excludes Connector Lines Ib kg to and from Liebert XD Cooling Module 157 Ib 71 2kg Liebert XDP Liebert XDC Table 13 System refrigerant charge for the supply and return mains Refrigerant Charge Ib foot kg m Supply Return Main Length and Diameter
50. ert XDV Vertical Above Cabinet Cooling Module The Liebert XDV cooling system 1s designed to be attached to the top of a computer cabinet or rack containing heat dissipating equipment Two fans draw hot air exhausted from the equipment or from the hot aisle pass 1t through a cooling coil and discharge cool air back down to the cold aisle where the equipment s air intake 1s located The Liebert XDV comes from the factory ready to draw heated air through a perforated grille on the back of the unit The Liebert is easily modified to draw hot air through the bottom of the unit should that cooling method be better suited to your application Liebert XDV smart modules allow remote shutdown fan failure alarms and automatically switching the second fan On and Off This saves energy by permitting the unit to run with one fan and switch ing on a second fan when the temperature requires both fans for cooling The Liebert XDV is available for hard piped configurations or with Liebert XD Flex Pipes with guick connect couplings one shot or removable for easy connection to the header system The Liebert XDV and flexible pipes are also available for shipment with a pre charge of R134a This option requires the use of the one shot flexible pipes Figure7 Top mounted Liebert XDV modules with hard piping in hot aisle cold aisle arrangement m m H TUR E E Aisle Aisle Hot Aisle Cold Aisle Figure 8 Top mounted Liebert
51. es Dual Air Inlets The Liebert unit can be configured to allow air to enter from the rear grille or the bottom of the unit Dual Fans Airflow is provided by two fans on the front of the unit Dual switches Controls on the front of the unit permit the use of one fan or both fans Foundation Mounting There are two 1 4 20 cage nuts located on the underside of unit which allow direct attachment to any Liebert Foundation cabinet bolts provided with Liebert XDV unit e Mounting Clips for Non Liebert Cabinets The Liebert unit is supplied with mounting clips that allow attachment to a non Liebert cabinet Some drilling may be required 4 10 Features Liebert XDV Refrigerant Pre Charge The Liebert XDV can be precharged with refrigerant The unit will have the one shot fittings and will be pressurized The one shot Liebert XD Flex Piping will also be precharged with refrigerant External Mounting Brackets The Liebert can be suspended from the overhead building structure The external mounting brackets are ship loose items Field Installed Flexible Piping for use with prefabricated piping assemblies Field installed flexible piping kits are available in lengths of 4 6 8 and 10 feet 1 2 1 8 2 4 and 3 meters Con nection style to the unit end may be straight or 90 degrees with one shot or removable connec tions Flex pipes with one shot connections will have pressurized R134a Flex pipes w
52. es Properly spaced cooling modules and the Liebert XD system s fluid phase change technology combine to reduce a Liebert XD system s energy consumption to at least 27 percent less than a traditional cooling system The Liebert XD family maintains this energy efficiency by employing the heat absorption properties of a liquid pumped refrigerant through a phase change Refrigerant 1s pumped as a liquid becomes a gas within the heat exchangers of the cooling modules either the Liebert XDCF Liebert XDH Lie bert XDO or Liebert and then is returned to either the Liebert XDP or Liebert where it condenses to a liquid This eliminates the compression cycle required by traditional systems And if a leak were to occur the environmentally friendly refrigerant in the data center would escape as a gas causing no harm to critical equipment Because no compressor is used in the pumped refrigerant cir cuit no oil is needed Liebert XD cooling modules further increase efficiency with optional control board that reduces fan use when maximum cooling levels are not required The control board 1s available on Liebert XDH Liebert XDO and Liebert XDV units European Union Fluorinated Greenhouse Gas Requirements Stationary air conditioning refrigeration heat pump equipment 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 wit
53. ester Road All rights reserved throughout the world Specifications subject to change Wanchai without notice Hong Kong Liebert is a registered trademark of Liebert Corporation All names referred to are trademarks 852 2572 2201 or registered trademarks of their respective owners Fax 852 2519 9210 SI 16655 REVO9 7 09 Emerson Network Power The global leader in enabling Business Critical Continuity EmersonNetworkPower com AC Power Embedded Computing Outside Plant Racks amp Integrated Cabinets Connectivity Embedded Power Power Switching amp Controls Services DC Power Monitoring Precision Cooling Surge Protection Business Critical Continuity Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co 2008 Emerson Electric Co
54. frame coil and fil ter dryer It has no moving parts and needs no electricity The unit 1s available with optional Liebert XD Flex Pipes flexible metal pipes with quick connect couplings at each end for easy connection to the refrigerant distribution pipes Figure 4 Liebert XDCF units on Egenera s BladeFrame EX cabinets 1 5 System Description Liebert XDH Horizontal Cooling Module The Liebert is designed for placement within a row of computer cabinets in the data center in a hot aisle cold aisle arrangement to maximize the Liebert XDH s cooling The Liebert XDH available in a half rack width unit 12 305mm is intended for use with a Liebert XD pumped refrigerant cooling system supplied by either a Liebert XDP or Liebert XDC The unit takes in hot air through the rear from the hot aisle cools the air by air to fluid heat exchangers and discharges the air through the front of the unit into the cold aisle in a diffuse pattern The cooling air is then drawn into the enclosures to cool the equipment Replaceable front panels on the Liebert XDH may be customized to match the appearance of various computer manufacturer s equipment allowing the Liebert XDH to blend in with adjacent server equipment and enclosures Unidirectional and bidirectional diffusers are available to direct cooling air for more efficient cooling depending on the Liebert XDH s positioning in a row or at the end of a row Chilled R 134a refrigerant is p
55. g modules 96 Nominal 2438mm 48 1219mm Ref Typ _ 24 ipi 610mm YP 8 5 16 Ref Typ 211mm P L M Return eo DPNO00773 Table 7 Two port prefabricated piping legend Branch Piping Standard Run Outside Diameter ODS 1 1 8 1 3 8 894922 834022 inch mm Height H 8 3 4 222 8 3 4 222 Length L 6 3 4 171 6 7 8 175 Outside Diameter ODR 2 1 8 2 5 8 inch mm Height H 10 1 2 267 10 1 2 267 Length L 8 3 4 222 9 1 8 232 Pipe runs greater than 60 equivalent feet 27 Designing a Liebert XD Solution Figure 29 Four port prefabricated piping for Liebert XD cooling modules ISS PASS STR E AS lt lt gt DNS 2 AL Am 96 Nominal 2438mm 48 Ref 1219mm 19 7 16 28 9 16 Ref DPN000773 Table 8 Four port prefabricated piping legend Branch Piping Standard Run Outside Diameter ODS 1 1 8 1 3 8 inch mm Height H 8 3 4 222 8 3 4 222 Length L 6 3 4 171 6 7 8 175 Outside Diameter ODR 2 1 8 2 5 8 Return _ inch mm Height H 10 1 2 267 10 1 2 267 Length L 8 3 4 222 9 1 8 232 Pipe runs greater than 60 equivalent feet 28 Designing a Liebert XD Solution Figure 30 Five port prefabricated piping for Liebert XD cooling modules 120 Nominal 3048mm
56. h the F Gas Regulation EC No 842 2006 F gas The regulation prohibits among other actions venting fluorinated greenhouse gases to the atmo sphere The F Gas Regulation requires operators to use all measures that are technically feasible and do not entail disproportionate cost to prevent leakage of these gases to test for leakage regularly and to recover f gas before disposing of equipment as well as during service and maintenance Refer to the full regulation for additional details System Description 1 2 Generic Piping Layouts Liebert XD systems are available in two configurations differentiated essentially by the method of heat rejection see Figures 1 and 2 The Liebert is a pumping unit connected to a building chilled water system to control and circulate the refrigerant Liebert XDPs pump refrigerant to Lie bert XDCF Liebert XDH Liebert XDO or Liebert modules isolate refrigerant circuit from build ing chilled water supply with an internal heat exchanger and maintains refrigerant temperature above the actual dew point The Liebert XDC incorporates the pumping functions with the chiller which must be connected to a separate heat rejection system Pumping and refrigerant control are performed by Liebert XDC Figure1 Liebert XDP generic piping layout Liebert XDP System Configuration Building zr XD Supply Pipi Chi
57. he control system also monitors unit operation and activates an alarm when any of the specified factory preset conditions are exceeded Cabinet and Frame Custom powder painted steel panels A hinged control access panel opens to a second front panel which is a protected enclosure for all high voltage components Frame is constructed of 14 gauge heliarc welded tubular steel and painted using an auto deposition coating system 5 1 1 Liebert Optional Features Water Glycol Condensers A water glycol floor stand condenser option is available for heat rejection requirements The water glycol floor stand can be located beneath the XDC unit or installed nearby Figure 49 Liebert dimensional data P a Recommended Overall Minimum Hot Gas supply amp Liquid Return Piping Opening 5 127mm 482mm 2 Floor Cutout Dimensions 51mm shaded areas indicate a Unit Unit Base recommended clearance Base of 34 864mm for Unit Dimensional Data component access DPNOO00768 Table 24 Liebert XD Chiller dimensions weight Dimensional Data inches mm Shipping Weight Ib kg Air Cooled Model A e gt B E Domestic Export Liebert XDC160 74 1880 34 864 33 1 8 841 33 838 72 1829 1945 882 2093 949 Dimension does not include the bezel of the disconnect switch 51 Liebert and Liebert Figure 50 Liebert piping locations
58. igerant charge example Number of Units Components or Piping Length feet Pounds Per Component Total Ib XD Flex Pipes Liebert XDV 5 8 return Liebert XD Flex Pipes Total 293 Table 17 Worksheet to calculate refrigerant charge Number of Units Components or Piping Length Pounds Per Component Total Total Verify that the refrigerant volume of the Liebert XD system with the longest piping length is within the allowable limit If the allowable limit 1s exceeded the Liebert XDP Liebert XDC should be moved closer to the cooling modules refer to 3 17 Liebert XD Refrigerant for limits and related details Another way to shorten the total pipe length 1s to reroute the pipe runs 3 18 3 Liebert XDC DX R 407c Circuit Volume NOTICE Risk of 1mproper lubrication May cause equipment damage Liebert XDCs refrigerant R 407c circuits with refrigerant charges over 55 lb 24 9 kg require additional oil See Figure 32 for the amount required for various charge levels Once the system has been fully charged with refrigerant use a hand pump to add the additional oil at the suction side of the system while the system 1s running The amount of oil added by field service must be recorded on a tag attached at the tandem the amount added along with the date 1t was added This will be documented on a tag located at the tandem compressor and marked Oil Added Field Service Record Refer to the Liebert XDC user manual SL 16671 available
59. ight cause false readings for example near unsealed doors windows and similar areas 36 4 0 4 1 Liebert XD Cooling Modules Liebert XDCF Liebert XDH Liebert XDO and Liebert XDV LiEBERT XD COOLING MODULES LIEBERT XDCF LIEBERT XDH LIEBERT XDO AND LIEBERT XDV 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 When attached to a fully loaded BladeFrame EX rack each Liebert XDCF module has a nominal cooling capacity of 10kW 2 8 tons 34 000 BTUh Performance is based on Entering fluid temperature 55 F 12 8 C and Dew point 50 F 10 or lower Liebert XDCF modules consist of a sheet metal frame coil and filter dryer It has no moving parts and needs no electricity The Liebert XDCF system see Figure 33 below consists of Liebert Modules upper and lower models are available Flex Pipe connects Liebert XDCF units to supply and return piping Liebert XD Piping delivers pumped R 134a refrigerant through flexible piping Liebert or Liebert XDC supplies R 134a refrigerant to Liebert XDCF modules see Liebert XDP or Liebert user manual for required chiller or drycooler Figure 33 Liebert XDCF generic piping layout
60. in place of 100 water 30 of nominal system capacity or 48kW 163 800BTU H Electrical Requirements 208V 3ph 60Hz 460V 3 ph60Hz 380 415 V 3ph 50Hz Dimensions inches mm Height Unit only 78 1981 Height As shipped 83 2108 Width 38 965 Depth 34 864 en en N N Weight Ib kg Unit only 821 372 Shipping weight Domestic 990 449 Export 1067 484 Installed with refrigerant and chilled water 1038 471 Pipe Connections Refrigerant supply to Liebert XD cooling 1 1 8 OD Cu module Refrigerant return from Liebert XD cooling module 2 1 8 OD Cu Chilled water supply and return 2 5 8 OD Cu Control valve 2 way 2 nominal 35 PSIG close off pressure rating 150 PSIG maximum allowable pressure Pressure Drop Chilled Water Side 20 psig 137kPa A water flow rate Temperature Rise Chilled Water Side at rated flow F C SO OS Number of Liebert XD cooling units connected maximum minimum 20 3 Temperature Maximum 78 Specifications and Model Number Nomenclature Figure 74 Liebert XDP model number nomenclature Example XDP160RA XD P 160 R A Pumping Pump Place holder Revision unit Redundancy level Liebert Model size Voltage phase frequency Place holder Xtreme heat A 460V 3ph 60Hz Density system C 208V 3ph 60Hz M 380 415 3ph 50Hz 79 Ensuring The High Availability Of Mission Critical Data And Appli
61. ing Flexible Piping 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 module end may be straight or 90 degrees with one shot style couplings or removable cou plings The one shot flexible pipes are charged at the factory with R134a Connection to the prefabri cated piping assembly 1s a threaded coupler For information on acquiring the correct kit for your installation refer to DPN000780 available by calling 1 800 LIEBERT and from your local Emerson Network Power representative Contact the factory when ordering additional flex piping kits for Lie bert XD systems installed before 2007 Prefabricated Headers Field piping kits are available in several versions 10 ft 3 05m with 5 or 10 ports 8ft 2 44m with 2 or 4 ports Each version is available in two pipe sizes Supply pipe 1 1 8 return pipe 2 1 8 Supply pipe 1 3 8 return pipe 2 5 8 Each kit contains one 1 supply pipe and one 1 return pipe Each port has a threaded coupling at the end with automatic shutoff when disconnected Each port also has a ball valve for manual shutoff For more information refer to section 3 12 Liebert XD Piping System Design Liebert XD Connection Port Kit The connection ports in the Liebert XD Field Piping Kits are available as Liebert XD Connection Port Kit Each port has a threaded coupling with automatic shutoff when disconnected at the end Each port also h
62. ining the refrigerant s temperature above the room dew point at the sensors The Liebert XDP 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 The Liebert XDP s uses the Liebert iCOM This advanced control enables the user to monitor essen tially all aspects of the Liebert XD Precision Cooling system from operating status to maintenance The Liebert 1 also permits networking cooling units for precise efficient operation 1 9 4 Liebert XDP Minimum Load The Liebert XDP s minimum recommended operating load 1s 3096 of system nominal capacity For example a Liebert XDP160 60Hz system s minimum load would be 48 kW Loading below this value can unfavorably affect system operation Figure 10 Liebert XDP pumping unit 1 10 1 10 1 System Description Liebert XD Piping Liebert XD Piping is prefabricated distribution piping that is installed in anticipation of a growing sys tem Liebert XD cooling modules are added as required and are quickly made operational with flexible connection piping with threaded couplings This unique system allows the room cooling capacity to increase to more than 30kW per rack with no additional disruptive piping installation The flexible connection piping also allows the cooling modules to be re positioned without interruption 1n operation Liebert XD Field Pip
63. ion 1 39 Liebert XDCF Piping Connection Methods and 39 AA duode et aoe Raed UP MN ee ewe aed 40 Liebert XDH Standard 40 Optional Features Liebert lee RR RR ah 40 Liebert Standard 42 Optional Features Liebert XDO eee RR e 42 Liebert Standard 46 Optional Features Liebert 46 LIEBERT AND LIEBERT n e nn 51 Liebert Standard Features llle 51 Ds Liebert XD C Optional Beat res 4222233 bre hme Y Uh Rob ex d EE eua 51 Liebert XDP Standard 60 SPECIFICATIONS AND MODEL NUMBER NOMENCLATURE 65 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure
64. irectional air diffusers should be used on Liebert XDH modules installed between racks If a Liebert XDH is installed at the end of a row uni directional air diffusers should be used on that Liebert XDH The uni directional diffusers can be used for left or right air discharge by removing them from the Liebert XDH turning them 180 degrees then reattaching them to the Liebert XDH Figure 14 Liebert XDH placement top view WY 16 Designing a Liebert XD Solution 3 8 Liebert XDO Placement 3 8 1 Determining Spacing of Liebert XDOs in an Aisle Liebert XDO units should be placed in rows directly above the cold aisles of a room for optimum cool ing Each Liebert XDO serves an area equal in width to the cold aisle spacing typically 12 to 16 feet 3 7 to 4 9m The length of the area served includes any space between Liebert XDO modules ina row Depending on the cooling capacity to be achieved spacing between Liebert XDO modules ina row may vary from zero to as much as 6 feet 1 8m When the spacing increases to more than 6 feet 1 8m overall performance of the system may be negatively affected and gaps in cooling may occur Install one Liebert XDO at the end of each aisle being cooled and to space the remainder between these end units as shown in Figure 15 This layout wil
65. ith removable connections will have a low pressure nitrogen charge Connection to the prefabricated piping assembly 1s with a threaded coupler For information on acquiring the correct kit for your installation refer to DPNOOO781 available from Liebert by calling 1 800 LIEBERT and from your local Emerson Network Power representative Smart Module Liebert XDV smart modules allow remote shutdown fan failure alarms and auto matically switching the second fan On and Off This saves energy by permitting the unit to run with one fan and switching on a second fan when the temperature requires both fans for cooling For electrical connection details refer to the Liebert XDV user manual SL 16626 available on the Liebert Web site www liebert com 46 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Liebert XDV Figure 44 Liebert XDV dimensions N tea o DPNOOO7 70 4 LI Liebert XDV With 1 Pre charged Option or a Removable Connection all dimensions except piping height are the same as for the hard piped setup see Table 23 numum ia Table 23 Dimensional data oimenson _ 08 DephBotom 295 8752 _ Piping Height 18 5 8 473 hard piped Piping Height one shot option 19 5 8 498 or removable connection Depth Front 9 7 8 250 47 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO and Lie
66. itting 16kW of heat top view Downflow Cooling Unit Downflow Cooling Unit S Interlaced piping arrangement for enhanced protection XDVs Mounted on Equipment Racks Circuit 1 Circuit 2 Circuit 3 7 AOS MONIER Circuit 4 Circuit 5 Circuit 6 on Equipment Racks 3 12 Liebert XD Piping System Design piping must be ASTM American Society for Testing and Materials Type copper pipe The typical maximum operating pressure in the system 1s 90 psi 620kPa Piping for the Liebert XD system 1s arranged 1n a manner similar to piping for a chilled water system Liebert XD cooling modules are connected in parallel between the main return and supply pipes going to and from the Liebert XDP Liebert XDC Figure 22 represents a typical configuration The guide lines 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 22 Piping for Liebert XDP Liebert XDC used with Liebert XD cooling units Au A All supply and return mains must 20ft Oft be level with or 6 7m 2 7m above the top of all max max Liebert XDP or Liebert XDC units Liebert XD Cooling M
67. ity The Liebert XD system is optimized for hot aisle cold aisle equipment configurations the industry s highest recommended method for dealing with extremely high heat loads Refer to the technical data manual of either the Deluxe System 3 SL 18100 or the Liebert DS SL 18810 for additional installation and application guidelines that apply to all critical space cooling applications Determine Cooling Requirements and Select Liebert XD System Calculate the total cooling required Determine placement of the Liebert XD units Determine required pipe sizes Calculate the refrigerant volume of the Liebert XD systems pope Complete design details including electrical mounting piping etc Calculate the Heat Load to be Handled by Liebert XD System When designing a cooling solution using the Liebert XD system the initial steps are similar to those required to cool a conventional critical space The total heat load must be calculated including sensi ble and latent cooling requirements These should be increased by the reserve capacity needed for pull down situations where the room temperature must be reduced and to provide for unexpected increases in heat load NOTE Reserve capacity is distinct from redundant capacity in that redundant capacity may or may not be available concurrently with normal operating capacity Reserve capacity is available concurrently with normal operating capacity The next step is to determine how
68. l 98 F 37 C EAT 10kW 2 8 Tons Nominal 98 37 EAT 8 3kW 2 4 Tons SAP Maximum 106 F 41 C EAT 11 7kW 3 3 Tons Maximum 116 F 47 C EAT 11 7kW 3 3 Tons Conditions Capacity Rating is 55 F 13 C Entering Fluid Temperature and 50 F 10 C or lower dew point rear air inlet Electrical Requirements 120V model 1ph 60 Hz 230V model 1ph 60 Hz 230V model 1ph 50 Hz Input power connections 2 power connections each model Full Load Amps 120V model 2 0A 230V model 1 0A Power consumption 180 190 190 190 nominal watts Dimensions in mm Height unit only 14 355 not including pipe connections Height including hard 18 5 8 473 pipe connections Height including one 19 5 8 498 shot connections 1000 1699 with rear inlet 833 1415 with rear inlet Bottom inlet airflow may be less Bottom inlet airflow may be less depending on restrictions inside cabinet depending on restrictions inside cabinet Audible noise 78 dBa sound power 73 dBa sound power Pipe Connections without Liebert Flex Pipe Refrigerant supply from Liebert XDP XDC 1 2 OD Cu optional 1 2 threaded coupler flex piping Refrigerant return P to Liebert XDP 5 8 OD Cu optional 3 4 threaded coupler flex piping Serviceable Parts Fans and electrical components Cabinet Exterior Finish Black matte finish heat fused powder coat Smart Module control board factory installed Dry contact 24
69. l block the incursion of hot air around the side of the end cabinets Allowing space between the Liebert XDO groups facilatates maintenance by allowing access to the overhead space Figure 15 Liebert XDO spacing horizontal side view Front to rear spacing of pairs Pairs of Liebert XDO modules f Liebert XDO modul of Liebe modules above critical equipment XDO height above equipment to be cooled Heat Generating Critical Equipment 17 Designing a Liebert XD Solution 3 8 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 However the recommended maximum height of the Liebert XDO above the cabinets 1s 30 inches 762mm See Figure 16 Figure 16 Liebert XDO placement over cold aisle Hard Piped Hot air is Connection drawn into the XDO for cooling One Shot Connection 18 24 e 18 24 45 7 60 9
70. lled XDP Cooling Module upply Fiping Water Pumped Refrigerant R134a Tx Return Piping Cooling Module ebert 3 Liebert XDCF XDP Cooling Module Liebert XDH Liebert PUMPER XDO or Liebert XDV Refrigerant R134a Figure 2 Liebert generic piping layout Liebert XDC System Configuration Liebert Heat Rejection sus XDC Air Cooled or R407C Pumped Cooling Module XDC Supply Piping Return Piping Water Glycol Refrigerant 157 7 AD Cooling Module Cooled R134a XD Cooling Module Pumped Refrigerant R134a R407C Liebert XDCF Liebert XDH Liebert XD Cooling Module XDO or Liebert XDV System Description 1 3 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 Figure3 Liebert XDA air flow enhancer on equipment enclosure seal Liebert gt System Description 1 4 Liebert XDCF Liebert XD CoolFrame The Liebert XDCF 1 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 Liebert XDCF modules consist of a sheet metal
71. ls of the unit The external mounting brack ets are optional ship loose items Smart Modules The Liebert XDO is available with an optional factory installed control board A Liebert XDO smart module will allow remote monitoring shutdown fan failure alarms conden sate detection and automatically cycling the fan On and Off as the heat load requires Lighting Fixture Field installable lighting fixtures are available in two voltages 120V and 277V The lighting fixture maybe attached to the bottom of the light panel to the left and right of the fan Each fixture consists of housing reflector ballast and diffuser Fixtures are compatible with standard 48 fluorescent bulbs Bulbs are not included 42 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert and Liebert XDV Figure 39 Dimensional data Liebert XDO hard piped units LEFT SIDE d 24 1 8 613mm REAR 72 1 4 1835mm LEFT SIDE 24 1 4 616mm 9 3 4 9 3 4 FRONT 248mm 248mm DPNO000771 Figure 40 Dimensional data Liebert XDO with pre charged option LEFT AM 24 1 8 613mm REAR 72 1 4 1835mm 43 Liebert XD Cooling Modules Liebert XDCF Liebert Liebert XDO Liebert XDV Figure 41 Liebert XDO internal mounting location 26 3 4 18 1 2 718 22mm 79 470 diameter mounting holes TOP VIEW Q 1 EE 26 3 4 25mm 679mm 7 8
72. may be signifi cantly higher than in typical DX cooling systems NOTICE Risk of 1mproper oil use Can cause equipment damage The Liebert XD pumped R 134a refrigerant circuits do not use refrigerant oil Do NOT put oil in the R 134a system All the major components of a Liebert XD system must be installed in a space with a volume of at least 1 000 ft 28 3m for each 13 pounds of refrigerant in that system from ANSI ASHRAE Stan dard 34 2007 Designation and Safety Classification of Refrigerant If the Liebert XDP Liebert XDC is placed in a separate area such as a machine room then this area must also meet the volume require ment Inside the critical space this includes the space under the raised floor and the space between the top of the raised floor and the bottom of a suspended ceiling If the suspended ceiling 1s all open grates then this additional space up to the overhead deck would also be included Example A space 1s 5 000 square feet with an 18 raised floor and an 8 6 suspended ceiling Liebert XDOs and a Liebert XDP are to be placed in this raised floor area The volume of the space is 1 5 8 5 x 5 000 or 50 000 cubic feet The maximum amount of R 134a refrigerant that can be used in a single Liebert XDP Liebert XDC Liebert XD module system within this space is 13 50000 1000 18 50 650 lb Multiple Liebert XD systems can be installed 1n this space as long as the amount of R 134a refrigerant in any one syst
73. much of the required cooling capacity is to be provided by Liebert Deluxe or Liebert DS units If the facility is new typically up to 150 watts per square foot 1500W m of cooling can be obtained from Liebert precision air conditioning units supplying air through a raised floor In existing facilities such factors as raised floor height under floor obstructions or other limita tions may reduce this to less than 50 watts per square foot 500 watts Once the total required sensible cooling capacity 1s known subtract the sensible cooling portion to be provided by Liebert Deluxe or Liebert DS units This yields the cooling capacity to be provided by the Liebert XD system Confirm the minimum heat load for the Liebert XDP Liebert XDC 1s still present in the data center 48kW amp 64kW respectively 13 3 3 3 4 3 5 3 5 1 Designing a Liebert XD Solution Selecting Liebert XD Cooling Modules The next step 1s 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 1s selected for use in new installations or renovations where the unit can be installed on the ceiling or in the overhead space The Liebert XDV 1s designed to permit mounting directly on top of an equipment cabinet for ease of in
74. nd pins required are fabricated at the factory The Liebert XDCF does not require electrical connections The number of Liebert modules required is determined by the heat load of the cabinet cabi nets cannot share cooling from a Liebert XDCF module The Egenera BladeFrame EX cabinet has provisions for mounting two Liebert XDCF modules should the heat load require two modules If only one Liebert XDCF will be needed Liebert recommends using the lower Liebert XDCF module The complete system consists of Liebert XDCF modules piping Liebert XDP or Liebert XDC refriger ant distribution units and those units chillers or drycoolers Figure 13 Liebert XDCF unit mounting locations Liebert XDCF Modules attached to Egenera BladeFrame EX Cabinet d Up per Module Lower Module 15 3 7 Designing a Liebert XD Solution Liebert XDH Placement The free standing Liebert XDH cooling unit 1s best placed among the equipment cabinets 1n a hot aisle cold aisle arrangement see Figure 14 The Liebert 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 Even spacing aids in optimizing cooling Liebert XDH units should be placed among the cabinets that generate the greatest amount of heat If heat loads are dispersed evenly throughout the room the Liebert XDH modules may be spread out accordingly Bi d
75. ns to the computer room cooling unit Therefore no perforated tiles should be placed in the hot aisles This would mix hot and cold air thereby lowering the temperature of the air returning to the cooling units This will reduce their usable capacity Figure 12 Hot aisle cold aisle arrangement with under floor source Precision Air Conditioning Unit Y Precision Air ac Heated air expelled from Conditioning Unit racks is drawn into cooling unit and returned to floor supply Cold air supplied through perforated floor tiles is drawn into racks HOT AISLE COLD AISLE HOT AISLE Perforated Tiles 12 3 0 3 1 3 2 Designing a Liebert XD Solution DESIGNING A LIEBERT XD SOLUTION 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 for the humidification and filtration of the room air The Liebert XD systems provide efficient highly effective heat removal sensible cooling only with out providing humidity control The Liebert XD control system maintains the refrigerant temperature just above the dew point of the space to prevent condensation Since the capacity of the system 1s lim ited by the dew point in the space sufficient dehumidification and an adequate vapor barrier must be provided to maintain the dew point at or below the level necessary to achieve the required capac
76. num micro channel heat exchangers Fan Air is drawn in the sides of the unit through the heat exchangers and is discharged by the fan to the area below The Liebert XDO fan tray hinges down to allow access to replace or service all electrical components Internal Mounting The Liebert unit is typically suspended from the overhead building structure by inserting field supplied threaded rods into the internal mounting brackets 4 8 dosis Features Liebert XDO Refrigerant Pre Charge Liebert XDO can be precharged with refrigerant The unit will have the one shot fittings and be pressurized The one shot Liebert XD Flex Piping will also be precharged with refrigerant Field Installed Flexible Piping for use with prefabricated piping assemblies or port kits Field installed flexible piping 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 with one shot connections Flex pipes with one shot connections will have pressurized R134a Connection to the prefabri cated piping assembly 1s with a threaded coupler For information on acquiring the correct kit for your installation refer to DPN000780 available by calling 1 800 LIEBERT and from your local Emerson Network Power representative External Mounting Brackets The Liebert XDO unit can be suspended by external mounting brackets that are attached to the front and rear pane
77. number 1 ra Liebert model number nomenclature 19 Iv Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Table 37 Table 38 Table 39 Table 40 Table 41 Table 42 Table 43 TABLES Liebert XD field installed port kits header connection 1 Maximum and minimum modules supported by a Liebert XDP or Liebert XDC Calculating quantity and spacing of Liebert XDO modules example below 1s Liebert a DO ss fuer Determine required number of Liebert modules example below is Liebert XDV10 Supply return pipe sizes for refrigerant Bypass flow controllers for Liebert XDC or Liebert XDP based systems Two port prefabricated piping Four port prefabricated piping Five port prefabricated piping Ten port prefabricated piping legend
78. odules 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 Horizontal connector lines should also be sloped downward from the cooling modules toward the main supply and return lines 22 Designing a Liebert XD Solution The assembly and connection means used for piping in the Liebert XD system are similar to that of conventional refrigeration systems All piping should be installed with high temperature brazed joints Soft solder is not recommended The lines being brazed MUST be filled with flowing dry nitro gen during brazing 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 Follow all guidelines in 3 12 Liebert XD Piping System Design and 3 13 Liebert XD Piping Slope during installation Insulate all piping lines to prevent condensation in applications where the dew point approaches the R 134a refrigerant temperature This might occur where Liebert XD module piping 1s above a dropped ceiling or in other areas not measured by sensors connected to the Liebert XDP or Liebert XDC See Table 5 f
79. ommended Arc Acceptable Arc Supply seen from 1 1 8 O D or 1 3 8 O D Refrigerant Grade Full Port Ball Valve Field Supplied and Field Installed to Match Pipe Size Refrigerant Grade Full Port Ball Valve Field Supplied and Field Installed to Match Pipe Size Copper Tubing Total length of each line from XD cooling module XDH XDO XDV to Main Supply Return from Cooling to Cooling Module Module Top of XD Cooling Module Rear of XD Cooling Module 26 Designing a Liebert XD Solution 3 15 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 All piping should be installed with high temperature brazed joints Soft solder 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 Follow all guidelines in 3 12 Liebert XD Piping System Design and 3 13 Liebert XD Piping Slope during installation Figure 28 Two port prefabricated piping for Liebert XD coolin
80. or recommended pipe sizes and Figure 23 for piping segment locations Table 5 Supply return pipe sizes for refrigerant loop Key to Piping Pipe Function in Figure 23 Size Equivalent Pipe Length Liebert XDP supply line from Liebert XDP supply 1 1 8 ODforlengthsupto60feet to farthest Liebert XD cooling module 1 3 8 OD for lengths over 60 but less than 175 feet Liebert XDP return line from farthest Liebert XD 2 1 8 OD for lengths up to 60 feet cooling module to Liebert XDP return 2 5 8 OD for lengths over 60 but less than 175 feet From any model Liebert XDO Liebert XDH supply 1 2 OD for lengths up to 10 feet to supply line of Liebert XDP 7 8 OD for lengths over 10 but less than 25 feet From any model Liebert XDO Liebert XDH return 7 8 OD for lengths up to 10 feet to return line of Liebert XDP 1 1 8 OD for lengths over 10 but less than 25 feet From any model Liebert XDV Liebert XDCF 1 2 OD for lengths up to 10 feet supply to supply line of Liebert XDP 5 8 OD for lengths over 10 but less than 35 feet From any model Liebert XDV Liebert XDCF return 5 8 OD for lengths up to 10 feet to return line of Liebert XDP 7 8 OD for lengths over 10 but less than 35 feet For additional information about piping connections see the unit s user manual Liebert XDP 16644 Liebert XDC SL 16671 Liebert XDO SL 16666 Liebert SL 16626 Liebert XDCF SL 16678 and Liebert XDH SL 17210 NOTE To minimize the amount of refriger
81. placeable filter dryer assembly valve during in liquid supply line B normal z operation determined A Return From Cooling Modules 4 by installer 17 1 4 B Supply to Cooling Modules 438mm Emerson recommends field installation 410mm of shutoff valves at these points to permit isolating the Liebert XDP for maintenance 10 254mm gt 19 483mm Dimensions are approximate and subject to change without notice Allow 8 204mm clearance for filter replacement To ensure all refrigerant flow is filtered install the filter dryer assembly between the discharge line of the Liebert XD P and the first bypass flow controller or the first cooling module D Chilled Water Return J L C Chilled Water Supply To Chilled Water Source From Chilled Water Source DPN001598 Table 28 Unit piping outlet connection sizes inches OD Cu Pipe Connection Point Liebert XDP160 2 1 8 1 1 8 2 5 8 2 5 8 61 Liebert and Liebert Figure 64 Front view of Liebert XDP and electrical enclosure O c Eom o 8 Ys C o Interface Enclosure Cover Hazardous Voltage Enclosure Cover DPNO01598 Figure 65 Liebert electrical enclosure knockout location for hazardous voltage wiring VEKKK XDP Input Power Knockout P AI TA TAN Ma YAN SHAN S777 NADA dio uu ARM
82. power cords with NEMA 5 15P plugs power cords with IEC320 C14 plugs Power Consumption Nominal Watts 1200 1150 Dimensions inches mm Height Unit Only 78 1981 Height Including Pipe Connections 80 2032 Width 12 305 Depth 42 1067 Weight Ib kg Unit Only 246 112 246 112 Shipping Weight 330 150 330 150 Number of Fans Airflow Nominal ft Imin m hr 4000 6796 3850 6541 gt c 2 za 2 o 86 dBa 86 dBa Sound Power Pipe Connections Refrigerant Supply 1 2 OD Cu optional 1 2 threaded one shot coupling on the unit Refrigerant Return 7 8 OD Cu optional 7 8 threaded one shot coupling on the unit Serviceable Parts Fans and electrical components Cabinet Exterior Finish Black matte finish heat fused powder coat Smart Module control board factory installed Dry contact 24VAC 1A maximum Pre Charged Refrigerant Air Diffusers R 134a refrigerant one shot connections Uni directional or bi directional gt 2 lt Approvals CSA 60Hz CE 50Hz CSA 50 60Hz 1 Refer to Figure 70 for complete part number 67 Specifications and Model Number Nomenclature Figure 70 Liebert XDH model number nomenclature Example XDH32BK XD H 32 B K Liebert 20 Model size 120V 1ph 60Hz Domestic packaging Xtreme heat 32 Model size S 208 240 1ph 60Hz E Export packaging density system 220 240 1ph 50Hz Horizontal B
83. rangement 1 6 System Description Liebert XDO Overhead Cooling Module The Liebert XDO 1s an overhead cooling system designed for installation above heat dissipating equipment fan draws hot air exhausted from the equipment through two cooling coils and dis charges cool air back down to the equipment see Figure 6 A Liebert XDO smart module will allow remote monitoring shutdown fan failure alarms condensate detection and automatically cycling the fan On and Off as the heat load requires The Liebert XDP Liebert XDC monitors room conditions and prevents coil condensation by maintaining the tem perature of the refrigerant pumped to the Liebert XDOs above the room dew point The Liebert XDO 1s available for hard piped configurations or with Liebert XD Flex Pipes with quick connect couplings one shot for easy connection to the header system When the pre charged option 1s selected the Liebert XDO and the one shot flexible pipes contain R134a NOTE Q The Liebert XDO is the most sensitive module to system load The Liebert XDO s air intake and the discharge are not separated by a rack This can lead to the Liebert pulling in cold air rather than hot air The Liebert XDP and Liebert XDC minimum loads must be met to prevent this from occurring Figure 6 Suspended Liebert XDO modules in hot aisle cold aisle arrangement Cold Aisle Hot Aisle Cold Aisle Hot Aisle Cold Aisle System Description 1 7 Lieb
84. rctic 22 CC or Uniqema RL32 3MAF or other Copeland approved oil Weigh in the calculated charge based on Tables 19 20 and 21 for Liebert XDC s with air cooled con densers Weigh in the calculated charge based on Tables 19 amp 22 for Liebert XDCs with water glycol cooled condensers For Liebert XDCs with the water glycol cooled condenser remotely located use Tables 19 21 amp 22 Table 19 Indoor unit refrigerant charge R 407c Model 60 50 Hz Charge Circuit Ib kg Liebert XDC160 17 5 8 0 35 3 19 3 20 3 21 Designing a Liebert XD Solution Table 20 Outdoor condenser charge R 407c Charge Circuit Ib kg CDL830 200 90 8 CSL616 254 115 2 CSL415 200 90 8 Table21 Air cooled systems liquid line charge R 407c refrigerant per 100 ft 30 m of Type copper tube EB E Ib kg Ib kg m mes wwe 1 3 8 1 5 8 16 7 7 Table 22 Indoor water glycol cooled condenser module charge R 407c Model 60 Hz Charge Circuit Ib kg Liebert XDC160 30 0 13 2 per circuit Chilled Water Piping The Liebert XDP 1s offered only with a two way chilled water control valve Some applications may require the use of a pressure activated bypass valve to prevent dead heading of the chilled water pump This bypass valve must be specified by the engineer responsible for design of the chilled water field piping system Chilled water connections
85. rovided to the Liebert by a Liebert XD Pumping unit Lie bert XDP or by a Liebert XD Chiller Liebert The Liebert has dual refrigeration circuits one in the upper half of the unit and the other in the lower half This permits increasing and decreas ing cooling levels 1n response to server room conditions The dual refrigeration circuits permits inter laced connection of two Liebert XD refrigerant sources to enhance system reliability The Liebert XDH may be installed in a Liebert XD piping system that includes other Liebert XD cooling modules Controls on the front of the Liebert XDH permit independent operation of the two banks of fans Dual power connections ensure continued fan operation if one of two electrical sources fails Optional smart modules allow remote shutdown fan failure alarms condensate detection and switching fan per bank On and Off This saves energy by permitting the unit to run with two fans per bank and switching on the middle when the temperature requires all fans for cooling The Liebert XDH 1s available for hard piped configurations and with flexible metal pipes with quick connect couplings one shot or removable at each end for easy connection to the header system The Liebert XDH and Liebert XD Flex Pipes are also available for shipment with a pre charge of R134a This option requires the use of the one shot flexible pipes Figure 5 Liebert XDH horizontal cooling module in hot aisle cold aisle ar
86. stallation 1n existing facilities The Liebert XDV may also be suspended from overhead using suit able mounting methods 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 may be mounted on the rear of a BladeFrame cabinet The Liebert XDH 1s installed among equipment cabinets and is particularly suited for new installa tions Airflow Requirements for Liebert XD Solutions Computer manufacturers typically specify a temperature change from intake to exhaust delta T of 18 27 F 10 15 for the air passing through a rack enclosure The heat generated by electronic equipment combined with the tight quarters of equipment cabinets mean high volumes of air must move through an enclosure to meet this cooling specification A Laebert XD system can supply the cold air to satisfy this cooling demand but airflow through the enclosure must be adequate to extract the heat from the cabinet Liebert s XDA units can boost the airflow to levels necessary to protect critical equipment The Liebert XDA 1s particularly suited to the hot aisle cold aisle arrangement Configuring a Liebert XD System Number of Modules Supported by a Liebert XDP or Liebert XDC The numerals designating the model size of a Liebert XD unit may be used to configure a cooling sys tem For example a Liebert XDO20 has a model size of 20 and a Liebert XDP160 will accommodate
87. t XDCF specifications XD CF 10 BP XD CF 10 TP XD CF 10 BPE XD CF TPE M ro rera Height including pipe connections wat Depth 7 5 16 186mm Refrigerant Supply from Liebert XDP Liebert XDC 1 2 threaded one shot coupling on the unit Refrigerant Return ii to Liebert XDP Liebert 5 8 threaded one shot coupling on the unit Safety CSA CE Figure 69 Liebert XDCF model number nomenclature Example XD CF 10 BP XD CF 10 B P P Liebert Model Size P z Coupling Revision Xtreme level heat Module for T Top Domestic Packaging density BladeFrame EX B Bottom E Export Packaging system 65 Specifications and Model Number Nomenclature Table 30 Liebert XDH20 specifications XDH20BK 1 XDH20BS 1 XDH20SK XDH20Ss 1 60Hz 50 60Hz XDH20 60Hz Nominal 98 F 37 C EAT 22kW 6 3 Tons XDH20 60Hz Maximum 105 F 41 C EAT 25 3kW 7 2 Tons XDH20 50Hz Nominal 98 F 37 C EAT 21 6kW 6 1 Tons XDH20 50Hz Maximum 105 F 41 C EAT 25 3kW 7 2 Tons Capacity rating is 55 F 13 Entering Fluid Temperature and 50 F 10 or lower dew point Electrical Requirements 220 240V 1ph 50Hz CE Input 208 240V 1ph 60Hz CSA Two IEC320 C14 power inlets and two IEC Two IEC320 C14 power inlets and two IEC power cords with NEMA 5 15P plugs power cords with IEC320 C14 plugs Power Consumption 575 Nominal Watts Dimensions inches mm W
88. ts mounting from either Unistruts or from overhead structure 10 32 x 5 8 length available from factory fact lied actory supplie purchased separately and shipped loose 1 4 20 x 5 8 length typical 2 factory supplied 10 32 x 5 8 length typical 3 factory supplied Unistrut field supplied upper XDV 1 lower XDV 2 Bolt 3 8 16 nut and washer factory supplied 50 Liebert and Liebert 5 0 LIEBERT AND LIEBERT XDP 5 1 Liebert XDC Standard Features Compressors Scroll with a suction gas cooled motor vibration isolators thermal overloads manual reset high pressure switch and pump down low pressure switch Refrigeration System Dual refrigeration circuits each including liquid line filter dryers refrigerant sight glass with moisture indicator electronic control valve adjustable externally equalized expansion valves and liquid line solenoid valves Heat Exchanger Brazed plate design with interwoven circuiting constructed of stainless steel plates copper brazed e Pumps Centrifugal type end suction canned rotor design e Microprocessor Control The control system is microprocessor based with an external LCD numerical display to allow observation of specified adjustable functions Normal operating condi tions are indicated on the LCD panel which is mounted either on the unit or on the wall depend ing on application details see user manual SL 16671 T
89. ve the top of the Liebert XDP Liebert XDC unit Liebert XDV Liebert XDO modules should be placed as close to the same level as possible The differences in elevation between the highest and low est Liebert XDV or Liebert XDO module in a system should be no more than 6 feet 2m 3 11 Examples of Expansion and Interlaced Connection of Liebert XD Cooling Modules Figure 18 Liebert XDV units mounted on racks emitting 3kW of heat top view Downflow Downflow Cooling Cooling Unit Unit Perforated Raised Floor Tiles XDVs Mounted on Equipment Racks M Equipment Racks without 20 Designing a Liebert XD Solution Figure 19 Liebert XDV units mounted on racks emitting 5kW of heat top view Downflow Downflow Cooling Cooling Unit Unit XDVs Mounted on Equipment Racks Circuit 1 Circuit 2 Eaui Rack Perforated Interlaced piping arrangement quipment Racks Raised without XDVs for enhanced protection Floor Tiles Figure 20 Liebert XDV units mounted on racks emitting 8kW of heat top view IE ID ID IEIEB Downflow Downflow Cooling Cooling Unit Unit ADS Mounted Circuit 1 Circuit 2 Circuit 3 on Equipment Racks Perforated Raised Floor Tiles Interlaced piping arrangement for enhanced protection 21 Designing a Liebert XD Solution Figure 21 Liebert XDV units mounted on racks em

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