Vertiv Liebert DSE System Design And User Manual
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Vertiv Liebert DSE System Design And User Manual

Vertiv Liebert DSE System Design And User Manual

Thermal management system, downflow, 250 kw 71 ton capacity, 50 and 60 hz
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Liebert®
DSE™ Thermal Management System
System Design and User Manual
Downflow, 250 kW (71 ton) Capacity, 50 and 60 Hz

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Summary of Contents for Vertiv Liebert DSE

  • Page 1 Liebert® DSE™ Thermal Management System System Design and User Manual Downflow, 250 kW (71 ton) Capacity, 50 and 60 Hz...
  • Page 2 The products covered by this instruction manual are manufactured and/or sold by Vertiv This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.

  • Page 3: Table Of Contents

    9.4 Liebert MCV Connection Locations 10 Checklist for Completed Installation 10.1 Moving and Placing Equipment 10.2 Electrical Installation Checks 10.3 Piping Installation Checks 10.4 Other Installation Checks 11 Initial Start-up Checks and Commissioning Procedure for Warranty Inspection Vertiv | Liebert® DSE™ System Design and User Guide |...
  • Page 4 12.5.6 Replacing the Compressor 12.6 Evaporator Coil 12.7 Air-Cooled Condenser Maintenance 13 Preventive Maintenance Checklist Appendices Appendix A: Technical Support and Contacts Appendix B: Submittal Drawings Appendix C: Guide Specifications Vertiv | Liebert® DSE™ System Design and User Guide |...

  • Page 5: Important Safety Instructions

    1 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert® DSE. Read this manual thoroughly before attempting to install or operate this unit. Only qualified personnel should move, install or service this equipment. Adhere to all warnings, cautions, notices and installation, operating and safety instructions on the unit and in this manual.
  • Page 6 Follow relevant OSHA lifting recommendations and consider using a two-person lift for safe and comfortable removal and installation of cabinet panels. Only properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to remove or install cabinet panels. Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 7 CAUTION: Risk of improper moving, lifting and handling. Can cause equipment damage or injury. Only properly trained and qualified personnel should work on this equipment. an modules . Use proper lifting techniques and wear appropriate, OSHA-approved PPE to avoid injury and dropping the fan module during removal. Equipment used in handling/lifting, and/or installing the fan assembly must meet OSHA requirements.
  • Page 8 NOTE: The Liebert® indoor cooling unit has a factory-installed, high-pressure safety switch in the high- side refrigerant circuit. Each refrigerant receiver contains a fusible plug for fire-safety purposes. Consult your local building code to determine whether the refrigerant piping will require additional, field-provided pressure-relief devices. Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 9 NOTICE TO EUROPEAN UNION CUSTOMERS: DISPOSAL OF OLD APPLIANCES—This product uses components that are dangerous for the environment, such as electronic cards and other electronic components. Any component that is removed must be take to specialized collection and disposal centers. If this unit must be dismantled, this must be done by a specialized center for collection and disposal of electric and electrical appliances or other dangerous substances.
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  • Page 11: Nomenclature And Components

    2 NOMENCLATURE AND COMPONENTS This section describes the model-number configuration for Liebert® DSE units and components. 2.1 Liebert DSE Model-number Nomenclature 2.1 above describes each digit of the model number. Table 2.1 DSE Model Number Model Number Digits 11 to...
  • Page 12 Digit 25 = Configuration Code A = 1 S = Special-feature authorization (SFA). A non-standard configuration or feature of the product that requires the local factory representative to work directly with the factory. Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 13: Component Location

    2.2 Component Location The unit component locations are described in the submittal documents included in the Submittal Drawings on page 67. The following table lists the relevant documents by number and title. Table 2.3 Component-location Drawings Document Number Title DPN004368 Component Location, Typical, Downflow, Horizontal-discharge Models, DA250 DPN004258 Component Location, Typical, MCV440 (8-fan) DPN004260...

  • Page 14: Blower Configurations

    2.3 Blower Configurations Figure 2.1 Downflow, horizontal-discharge blower configurations with EC fans Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 15 Figure 2.2 Downflow, bottom-discharge blower configurations with EC fans 2 Nomenclature and Components...
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  • Page 17: System Data

    3 SYSTEM DATA 3.1 Capacity and Performance Data Table 3.1  Capacity data for 60-Hz, Downflow, horizontal-discharge models Air-side Supply-air Return-air Outdoor Net Sensible Input Air flow SCOP ∆ T Temperature Temperature Temperature Capacity Power °F °F °C °F °C °F °C kBtu/hr –...

  • Page 18: Physical Data

    54374 5.86 7.01 33,000 56074 6.03 7.22 34,000 57773 6.20 7.42 35,000 59472 6.38 7.63 36,000 61171 6.55 7.83 37,000 62870 6.72 8.04 38,000 64570 6.89 8.24 39,000 66269 7.06 8.45 Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 19 Table 3.4 Air-flow Calibration Voltage (continued) Air flow* at 0.1 in. (25 Pa) ESP Air-flow calibration voltage 60 Hz 50 Hz 40,000 67968 7.23 8.65 41,000 69667 7.41 8.86 42,000 71366 7.58 9.07 43,000 73066 7.75 9.27 44,000 74765 7.92 9.48 *Maximum air-flow calibration voltage must be adjusted based on the required air flow. 3 System Data...
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  • Page 21: Planning Guidelines

    4 PLANNING GUIDELINES 4.1 Shipping Dimensions and Unit Weights Table 4.1 Downflow unit domestic and export shipping dimensions and weights Domestic Packaging Export Packaging Dry Weight, lb  Model # (kg) Ship Weight, lb Shipping Dimensions, in. Ship Weight, lb Shipping Dimensions, in. (kg) (mm) (kg)
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  • Page 23: Pre-Installation Preparation And Guidelines

    • Allow at least the minimum recommended clearances for maintenance and service. See the appropriate submittal drawings for dimensions. We recommend installing an under-floor water detection system. Contact your Vertiv representative for information. 5.1 Planning Dimensions The indoor and heat-rejection unit dimensions are described in the submittal documents included in the Submittal Drawings on page 67.
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  • Page 25: Equipment Inspection And Handling

    • Carefully inspect all items for visible or concealed damage. • Report damage immediately to the carrier and file a damage claim with a copy sent to Vertiv or to your sales representative. Equipment Recommended for Handling the Unit: •...

  • Page 26: Handling The Unit While Packaged

    20 ft (5 m) or farther from the unit. • Always refer to the location of the center-of-gravity indicators when lifting the unit, see Figure 6.1 below. Figure 6.1 Center-of-gravity indicator Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 27: Unpacking The Unit

    6.3 Unpacking the Unit NOTE: The bag may remain in place to protect from dust and to protect the unit panels, or it may be removed for immediate installation. Remove the bag from the unit when ready to remove the skid and install the unit. Figure 6.2 Unpacking the Unit Item Description...

  • Page 28: Removing The Unit From The Skid

    Referring to Figure 6.3 below, use a 9/16-in. socket driver to remove the lag screws (24 total) from the 4 corner brackets to detach the unit from the skid. Figure 6.3 Remove corner bracket Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 29 2. Open the door indicated in Figure 6.4 below, and locate the rigging-fastener kit that is secured to the bottom base inside the door. 3. Using the instructions included in the kit, install the rigging hardware for lifting the unit from the skid.
  • Page 30 4. Attach the recommended rigging equipment to the eye-nuts installed in Step 3. 5. Using the rigging equipment, lift the unit from the skid, and remove the skid from under the unit, see Figure 6.5 below. Figure 6.5 Lifting unit and removing skid Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 31: Unpacking And Handling The Fan Section

    6. Use the rigging equipment to move the unit to the final installation location, see Figure 6.6 below. Figure 6.6 Moving the unit with rigging 6.5 Unpacking and Handling the Fan Section See the "Instructions Package/Handling Fan Section DA250" document included with the fan section to un-crate and handle the fan section.
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  • Page 33: Electrical Requirements

    7 ELECTRICAL REQUIREMENTS 7.1 Indoor-unit Electrical Power Requirements Table 7.1 Electrical Data—DA250 Unit Voltage Rating 170.6 460 V, 60 Hz 177.3 145.8 575 V, 60 Hz 151.7 415 V, 50 Hz 175.3 FLA = full-load amps, WSA = wire-size amps, OPD = maximum overcurrent- protection device. Full-load amperage values do no reflect operating amperage values.
  • Page 34 Use correctly sized copper wire only and verify that all electrical connections are tight before turning power On. Check all electrical connections periodically and tighten as necessary. Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 35 WARNING! Risk of wiring damage, short circuits and electric shock. Can cause overheated wiring, smoke, fire, activation of fire suppression systems and EMS personnel and equipment, building and equipment damage, injury or death. Insert CSA certified or UL listed bushings into holes and or knockouts used to route wiring through metal panels to protect the wire insulation from contact with sheet metal edges.
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  • Page 37: Piping And Refrigerant Requirements

    8 PIPING AND REFRIGERANT REQUIREMENTS All fluid and refrigeration connections to the unit are sweat copper. Factory-installed piping brackets must not be removed. Field-installed piping must be installed in accordance with local codes and must be properly assembled, supported, isolated and insulated. Avoid piping runs through noise-sensitive areas, such as office walls and conference rooms.

  • Page 38: Field-Installed, Gravity-Fed Drain Line Requirements

    We recommend installing monitored, under-floor leak-detection equipment. Factory-installed Condensate Pump If your unit includes an optional condensate pump, the pump is factory-installed inside the unit and a 3/4-in. copper sweat connection is provided on the unit. Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 39: Refrigerant Piping And Charging

    • On 460-V, 60-Hz units, the condensate pump is rated for approximately 390 gph at 30 ft (1476 l/hr at 762 kPa) total head. • On 415-V, 50-Hz units, the condensate pump is rated for approximately 390 gph at 15 ft (1476 l/hr at 381 kPa) total head. 8.2 Refrigerant Piping and Charging WARNING! Risk of over-pressurization of the refrigeration system.

  • Page 40: Refrigerant Piping Guidelines For Air-Cooled Systems

    The following table lists the relevant documents by number and title. Table 8.3 Refrigeration Piping-layout and Condenser-positioning Drawings Document Number Title DPN003965 Mounting the MCV Condenser/EconoPhase Above or at Same Level as DSE Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 41: Refrigerant Line Sizes And Equivalent Lengths

    25 (11.3) *System Charge = indoor unit + MCV440 heat-rejection skid + refrigerant lines. For system charges over 200 lb. (90.7 kg), consult your Vertiv representative. See Table 12.2 on page 57 for the recommended oil for the system. Source: DPN003950 Rev. 3 Table 8.6 MCV440 Heat-rejection Skid Refrigerant Charge for R-410A Per Circuit Including PRE...

  • Page 42: Additional Oil Requirements For Scroll And Digital-Scroll Compressors

    Record,” attached to each compressor. The date of oil addition must be included as well. Figure 8.1 Standard-formed Tube Trap Versus Straight-tubes-and-fittings Trap Item Description Standard-formed tube trap Straight tubes and fittings trap Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 43 138 (4080) *System Charge = indoor unit + MCV440 heat-rejection skid + refrigerant lines and is calculated per circuit. For system charges over 200 lb. (90.7 kg), consult your Vertiv representative. See 12.5 on page 57 for the recommended oil for the system.

  • Page 44: Evacuation, Leak-Testing, And Charging Air-Cooled Systems

    A minimum of 20 psig (138 kPa) must be established and maintained for the compressor to operate. The charging function can be reset as many times as required to complete Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 45 To charge the system: Check the nameplate on the indoor unit for refrigerant type to be used. Unit control configurations differ depending on refrigerant type. 2. The unit must be operating during charging, refer to Checklist for Completed Installation page 49 3.
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  • Page 47: Heat-Rejection Skid

    9 HEAT-REJECTION SKID 9.1 Planning Dimensions The unit dimensions are described in the submittal documents included in the Submittal Drawings page 67. The following table lists the relevant documents by number and title. Table 9.1 Dimension Planning Drawings Document Number Title DPN004259 Cabinet Dimensional Data, MCV440, Single skid DPN004261...

  • Page 48: Liebert Mcv Connection Locations

    The following table lists the relevant documents by number and title. Table 9.4 Connection Drawings Document Number Title DPN004208 Connection Locations, DA250 DPN004257 Condenser connection data, MCV440, Single skid DPN004262 Condenser connection data, MCV440, Dual skid Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 49: Checklist For Completed Installation

    10 CHECKLIST FOR COMPLETED INSTALLATION 10.1 Moving and Placing Equipment Unpack and check received material. 2. Proper clearance for service access has been maintained around the equipment. 3. Equipment is level and mounting fasteners are tight. 10.2 Electrical Installation Checks Supply voltage and phase matches equipment nameplate.
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  • Page 51: Initial Start-Up Checks And Commissioning Procedure For Warranty Inspection

    11 INITIAL START-UP CHECKS AND COMMISSIONING PROCEDURE FOR WARRANTY INSPECTION WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA-approved personal protective equipment (PPE) per NFPA 70E before working within the electric control enclosure.
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  • Page 53: Maintenance

    NOTICE Risk of improper filter installation. Can cause filter collapse and airflow reduction. To maximize the performance and reliability of the equipment, use only Vertiv filters. Contact your Vertiv representative to order replacement filters. Verify that filters are installed and positioned so the air-flow direction marked on the filter is the same direction as unit air flow.

  • Page 54: Replacing The Filters

    Slide filters 4 through 1 over, then up to the slot and remove. 3. Install the new filters in each row in the reverse order as removed, installing the filter in position 15/slot last. Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 55: Fan Maintenance

    Any safety hazards stemming from the device must be re-evaluated once it is installed in the end device. Do not make any modifications, additions or conversions to the fan assembly without the approval of Vertiv. WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remote electric power-supply disconnect switches and verify with a voltmeter that power is off before opening the fan motor electric-connection enclosure.

  • Page 56: Fan Impellers

    Contact the motor manufacturer to determine the type of grease to use for lubrication. 12.2.4 Removing Fan Assembly Do not attempt to remove the fan assemblies without first contacting Vertiv Technical Support at 1-800- 543-2778. 12.3 Condensate-drain and Condensate-pump System Maintenance 12.3.1 Condensate Drain...

  • Page 57: Condensate Pump

    Do not mix polyolester (POE) and mineral-based oils. • Do not mix oils of different viscosities. • Consult Vertiv technical support or the compressor manufacturer if questions arise. Table 12.2 Compressor oil types for R-410A Refrigerant Compressor Type Oil Type Copeland Scroll and Digital Scroll POE Oil - ISO 32 Centistoke Viscosity 1.

  • Page 58: Rotalock Valve

    System side of valve 12.5.3 Replacement Compressors Replacement compressors are available through your Vertiv sales office. If the unit is under warranty, the replacement compressor must be obtained from and the original compressor returned to your local Vertiv sales office. Compressors are shipped in reusable packaging, and the original compressor should be returned in the same packaging.

  • Page 59: Replacing The Compressor

    12.5.6 Replacing the Compressor WARNING! Risk of electric shock. Can cause serious injury or death. The Liebert® iCOM microprocessor does not isolate power from the unit, even in the "Unit Off" mode. Some internal components require and receive power even during the "unit off" mode of the Liebert® iCOM control.

  • Page 60: Air-Cooled Condenser Maintenance

    Periodically consider commercial cleaning of coil surface • Inspect fans, motors and controls for proper operation. • Check all piping and capillaries for proper support. • Inspect for leaks. • Check contactors for pitting. Replace if pitted. Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 61: Preventive Maintenance Checklist

    13 PREVENTIVE MAINTENANCE CHECKLIST Source: DPN002952, Rev. 4 Inspection Date Job Name Indoor Unit Model # Indoor Unit Serial Number # Condenser/Drycooler Model # Condenser/Drycooler Serial # Room Temperature/Humidity °                     % Ambient Temperature ° Not all units will have all components. To determine your unit’s configuration, compare the Indoor Unit Model # above above and the information in the Components and Nomenclature section.
  • Page 62 14. High pressure cut out Circuit #1 _______ Circuit #2 _______ Circuit #3 _______ 15. Amp draw Circuit #1A Circuit #1B (if tandem) L1 Circuit #2A Circuit #2B (if tandem) L1 Vertiv | Liebert® DSE™ System Design and User Guide...
  • Page 63 Liebert® MCV Condenser Coil clean of debris (Clean coil if required) 2. Fans free of debris 3. Fans securely mounted 4. Motor bearings in good condition 5. Check all refrigerant lines for vibration isolation. Support as necessary 6. Check for refrigerant leaks 7.
  • Page 64 MAINTENANCE NOTES Name Signature Company Make photocopies for your records. Compare readings/information to previous maintenance worksheet. To locate your local Vertiv representative for Vertiv-engineered parts, check https://www.vertivco.com/en-us/support/ or Call 1-800-543-2778. Vertiv | Liebert® DSE™ System Design and User Guide...

  • Page 65: Appendices

    APPENDICES Appendix A: Technical Support and Contacts A.1 Technical Support/Service in the United States Vertiv™ Corporation 24x7 dispatch of technicians for all products. 1-800-543-2378 Liebert® Thermal Management Products 1-800-543-2778 Liebert® Channel Products 1-800-222-5877 Liebert® AC and DC Power Products 1-800-543-2378 A.2 Locations...
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  • Page 67: Appendix B: Submittal Drawings

    Appendix B: Submittal Drawings The submittal drawings are in the order of document part number (DPN). Table B.1 below, groups the drawings by topic/application. Table B.1 Submittal-drawings Contents Document Number Title Component Location DPN004368 Component Location, Typical, Downflow Models, DA250 DPN004258 Component Location, Typical, MCV440 (8-fan) DPN004260...
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  • Page 69: Appendix C: Guide Specifications

    DETAIL 3 JUNCTION BOX CANBUS JUMPER AND DIPSWTICH NOTE: TERMINATION LOCATION JUMPER ONE Liebert DSE system shown for simplicity. FACTORY WIRED FIELD INSTALLED DETAIL 4 LOW VOLTAGE JUNCTION BOX DETAIL 2 HEAT REJECTION INTERLOCK (B) SEE SHEET 2 FOR COMPONENT NOTES, CABLE NOTES, &...
  • Page 70 LIEBERT HEAT REJECTION SKID CANbus & INTERLOCK CONNECTIONS MCV + ECONOPHASE + BASE ASSEMBLY COMPONENT NOTES: 1. COMPONENT APPEARANCE, ORIENTATION, AND POSITION MAY VARY BETWEEN PRODUCT LINES. TERMINAL NAMES REMAIN CONSTANT. 2. ALL CIRCUITS TO THESE CONNECTION POINTS REMAIN CONSTANT. CAN &...
  • Page 71 LIEBERT DSE AIR COOLED PIPING SCHEMATIC LIEBERT MCV MOUNTED ABOVE LIEBERT DA150-250 CIRCUIT 1 CIRCUIT 2 Notes: The outlet of the receiver must be higher than the elevation of the EEV inside the indoor unit. The vertical height must not be greater than 60 ft (18.3 m).
  • Page 72 LIEBERT DSE AIR COOLED PIPING SCHEMATIC LIEBERT MCV AND LIEBERT DA150-250 AT SIMILAR LEVEL CIRCUIT 1 CIRCUIT 2 Liebert MCV Condenser Unit Liebert DSE EconoPhase Unit 44 1/2inch 1130mm Notes: DA250 with horizontal discharge should be piped out the top of unit.
  • Page 73 LIEBERT DSE PRIMARY CONNECTION LOCATIONS DA250 HG C2 LIQ C2 HG C1 LIQ C1 HR HV HR LV View A-A (Top View) Service Side of Unit LIQ C1 HR LV LIQ C2 HR HV HG C1 HG C2 Service Side View...
  • Page 74 LIEBERT HEAT REJECTION SKID PRIMARY CONNECTION LOCATIONS MCV440 + ECONOPHASE + BASE ASSEMBLY Low Voltage Customer High Voltage Customer Connection Connection Circuit 1 Circuit 2 DETAIL B (Field Electrical Connections) 111" 2819mm 34" 864mm Bottom of Box 52" 19 13/16" 27 13/16"...
  • Page 75 LIEBERT HEAT REJECTION SKID COMPONENT LOCATION DIAGRAM MCV440 + ECONOPHASE + BASE ASSEMBLY 1. Coils 2. EC Fans 3. Econophase Pump 4. High voltage customer connection 5. Low voltage customer connection 6. Piping connections Front Note: 1. Piping connections for entire assembly are in one location (item 6).
  • Page 76 LIEBERT HEAT REJECTION SKID CABINET & ANCHOR DIMENSIONAL DATA MCV440 + ECONOPHASE + BASE ASSEMBLY Main Electrical 101 1/4" 2572mm 175" 4436mm 111" 2819mm NOTES: 1) Minimum clearance on the Main Unit Disconnect Enclosure shall be 48" (1219mm) or per local code. 2) Recommended minimum 48"...
  • Page 77 LIEBERT HEAT REJECTION SKID CABINET & ANCHOR DIMENSIONAL DATA MCV440 + ECONOPHASE + BASE ASSEMBLY 20" 508mm 7/8" 13" 22mm 330mm (4) Mounting Holes (Contact Points) 1 5/8" 42mm 3/4" 19mm (4) Weep Holes (REF) DETAIL A Typ. (4) Places 148 15/16"...
  • Page 78 LIEBERT HEAT REJECTION SKID COMPONENT LOCATION DIAGRAM MCV440 (2) + ECONOPHASE (2) + BASE ASSEMBLY 1. MCV440 Electric Panel System 1 System 2 2. MCV440 Electric Panel System 2 3. Coils 4. EC Fans 5. ECONOPHASE- System 1 6. ECONOPHASE- System 2 7.
  • Page 79 LIEBERT HEAT REJECTION SKID CABINET & ANCHOR DIMENSIONAL DATA MCV440 (2) + ECONOPHASE (2) + BASE ASSEMBLY System 1 System 2 101 1/4" 2572mm Main Electrical 111" 2819mm 350" 8892mm Notes: 1. Minimum clearance of the Main Unit Disconnect Enclosure shall be 48" (1219mm) or per local electrical code. 2.
  • Page 80 LIEBERT HEAT REJECTION SKID CABINET & ANCHOR DIMENSIONAL DATA MCV440 (2) + ECONOPHASE (2) + BASE ASSEMBLY 350" 8892mm 148 7/8" 26 1/4" 148 7/8" 3782mm 667mm 3782mm 7/8" TYP. 22mm (8)Mounting Holes Contact Points) 101 1/4" 97 15/16" 2572mm 2488mm Typ.
  • Page 81 LIEBERT HEAT REJECTION SKID PRIMARY CONNECTION LOCATIONS MCV440 (2) + ECONOPHASE (2) + BASE ASSEMBLY LOW VOLTAGE CUSTOMER CONNECTION SYSTEM 1 SYSTEM 1 SYSTEM 2 CIRCUIT 1 CIRCUIT 2 LOW VOLTAGE CUSTOMER CONNECTION SYSTEM 1 HIGH VOLTAGE CUSTOMER CONNECTION SYSTEM 1 111"...
  • Page 82 LIEBERT DS, DSE, CW, PDX & PCW UNIT TO UNIT NETWORK CONNECTIONS RS485 SITE AND BMS COMMUNICATION CONNECTIONS ETHERNET DETAIL A ETHERNET CABLE (FIELD SUPPLIED) UNIT-TO-UNIT NETWORKING SWITCH (FIELD SUPPLIED) iCOM MICROPROCESSOR AND I/O BOARD TO / FROM OTHER NETWORKED UNITS P100 P95 DVI-D CABLE CONNECTION TO 7-INCH ICOM DISPLAY...
  • Page 83 LIEBERT DS, DSE, CW, PDX & PCW UNIT TO UNIT NETWORK CONNECTIONS ETHERNET CABLE (FIELD SUPPLIED) iCOM iCOM MICROPROCESSOR MICROPROCESSOR AND I/O BOARD AND I/O BOARD P100 P100 P95 DVI-D CABLE CONNECTION TO 7-INCH ICOM DISPLAY P100 POWER SUPPLY TO P95 DVI-D CABLE CONNECTION 7-INCH ICOM DISPLAY TO 7-INCH ICOM DISPLAY...
  • Page 84 LIEBERT DSE CABINET DIMENSIONAL DATA DA250 W/ HORIZONTAL DISCHARGE 83 1/2" 2122mm 61" 1550mm Section 120 1/8" 3050mm Top View For Unit Disassembly Data Refer to DPN004369 44 3/8" 1127mm 134 1/8" 3406mm 65 1/8" 1654mm Louvers 59" Rear View...
  • Page 85 LIEBERT DSE AIRFLOW SCHEMATIC DA250 DOWNFLOW UNIT W/ HORIZONTAL DISCHARGE Return Air from Data Center 53 1/8" 60" 1348mm 1524mm Outside of Duct Flange Section 3 1/2" 2 3/8" 115 3/8" 90mm 60mm 2929mm Outside of Duct Flange 1 3/4"...
  • Page 86 LIEBERT DSE COMPONENT LOCATION DIAGRAM DA250 1. Blower/Motor (Typical 3) 2. Line Reactor Transformers (Typical 3) 3. Evaporator Coil 4. Air Filters 5. Condensate Pump (optional) 6. Compressor Compartment 7. Electric Panel 8. 575v Step Down Transformer 9. VFD Assemblies (Typical 3)
  • Page 87 3. Schematic representation shown. Do not use for specific connection locations. 4. The outlet of the receiver must be higher than the elevation of the EEV inside the indoor unit. This vertical height must not exceed 60ft. (18.3m). Liebert DSE Receiver required for systems with or without EconoPhase unit.
  • Page 88 LIEBERT DSE FLOORSTAND DIMENSIONAL DATA DA250 36 3/8" 46" 33 7/8" 924mm 1168mm 860mm 39 1/4" 997mm Typ. (2) Plcs. 78 1/2" 1994mm Typ. 1 3/4" 44mm 33 7/8" 46" 36 3/8" 1 3/4" Typ. 860mm 1168mm 924mm 44mm Typ.
  • Page 89 LIEBERT DSE INSTALLATION & SERVICE CLEARANCE DATA DA250 INSTALLATION, REPLACEMENT FROM DATA CENTER SIDE, MAINTENANCE FROM GALLERY Fan service zone Piping & Cables must not be Data Hall routed in this zone. Gallery Side 88" (2235mm) Installation and replacement clearance for full unit 42"...
  • Page 90 LIEBERT DSE INSTALLATION & SERVICE CLEARANCE DATA DA250 INSTALLATION, SERVICE, AND MAINTENANCE FROM GALLERY Fan service zone Piping & Cables must not be routed in this zone. Data Hall Gallery Side 88" (2235mm) Full Unit and Electrical Panel Access Fan service zone Piping &...
  • Page 91 LIEBERT DSE INSTALLATION & SERVICE CLEARANCE DATA DA250 PERIMETER INSTALLATION AND SERVICE CLEARANCE Fan service zone Piping & Cables must not be routed in this zone. Data Hall Full Unit and 88" Electrical Panel (2235mm) access Fan service zone Piping & Cables must not be routed in this zone.
  • Page 92 LIEBERT DSE CABINET DIMENSIONAL DATA DA250 W/ BOTTOM DISCHARGE 83 1/2" 2122mm 61" 1550mm Section 120 1/8" 3051mm Top View For Unit Disassembly Data Refer to DPN004369 44 3/8" 1127mm 134 1/8" 3406mm Front View Rear View (Data Hall Side)
  • Page 93 LIEBERT DSE AIRFLOW SCHEMATIC DA250 W/ BOTTOM DISCHARGE Return Air From Data Center 60" 1524mm 53 1/8" 1348mm Section Outside of Duct Flange Top View 3 1/2" 90mm 2 3/8" 115 3/8" 60mm 2929mm Outside of Duct Flange 1 3/4"...
  • Page 94 LIEBERT DSE FLOOR PLANNING DIMENSIONAL DATA FOR ADJACENT DA250 UNITS Gasketing shown is for pictorial purposes only to show edges of unit that require gap sealing. Gasketing and method to be provided and applied by others in the field. Data Hall Side Data Hall Side 3/4"...
  • Page 95 LIEBERT DSE ELECTRICAL FIELD CONNECTIONS DA250 DOWNFLOW MODELS STANDARD ELECTRICAL CONNECTIONS 1) High voltage entrance - Located in bottom and top of box (quantity 3) 2) Low voltage entrance – Located in bottom and top of box (quantity 4) 3) Three phase electrical service - Terminals are on top of disconnect switch. Three phase service not provided by Liebert.
  • Page 96 LIEBERT DSE ELECTRICAL FIELD CONNECTIONS DA250 DOWNFLOW MODELS OPTIONAL ELECTRICAL CONNECTIONS 12) Condensate alarm (with condensate pump option) - On pump high water indication, normally open dry contact is closed across terminals 88 & 89 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
  • Page 97 LIEBERT DSE ELECTRICAL FIELD CONNECTIONS DA250 DOWNFLOW MODELS 23 22 DETAIL A DPN004797 REV : 0 Page :3 /3 REV DATE : 5/18...
  • Page 98 Appendix C: Guide Specifications The following are the guide specifications for the Liebert® DSE.
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  • Page 100 Liebert DSE™ Model DA250 Guide Specifications GENERAL SUMMARY These specifications describe requirements for a Thermal Management system. The system shall be designed to control temperature in rooms containing electronic equipment, with good insulation and vapor barrier. The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation requirements of the room.
  • Page 101 Liebert DSE™ Model DA250 PRODUCT FRAME DA250 The unit frame section and fan plenum frame shall be welded, formed sheet metal. They shall be protected against corrosion using the autophoretic coating process. The unit section and the fan plenum shall be shipped as two separate sections. The fan plenum shall be field mounted on top of the unit frame section.
  • Page 102 Liebert DSE™ Model DA250 SHORT-CIRCUIT CURRENT RATING (SCCR) The electrical panel shall provide at least 65,000A SCCR. Short-circuit current rating (SCCR) is the maximum short-circuit current a component or assembly can safely withstand when protected by a specific overcurrent protective device(s) or for a specified time.
  • Page 103 Liebert DSE™ Model DA250 2.10 R-410A REFRIGERANT The system shall be designed for use with R-410A refrigerant, which meets the U.S. Clean Air Act for phase-out of HCFC refrigerants. Refrigerant shall be field supplied and field charged by the installing contractor.
  • Page 104 Liebert DSE™ Model DA250 CONTROLS LIEBERT ICOM™ MICROPROCESSOR CONTROL WITH 7-IN. COLOR TOUCHSCREEN The Liebert iCOM shall be microprocessor-based with a 7-inch, high definition, capacitive, color touchscreen display and shall be mounted in an ergonomic, aesthetically pleasing housing. The display and housing shall be viewable while the front panel is open or closed. The controls shall be menu-driven.
  • Page 105 Liebert DSE™ Model DA250 • Service Contact Information—The Liebert iCOM shall have the ability to store the local service or sales contact information. • Upgradeable—Liebert iCOM firmware upgrades shall be performed through a USB connection. • Timers/Sleep Mode—The menu shall allow various customer settings for turning on/off unit.
  • Page 106 Liebert DSE™ Model DA250 ALARMS All unit alarms shall be annunciated through both audio and visual cues, clearly displayed on the screen, automatically recorded in the event log and communicated to the customer's Building Management System/Building Automation System. The Liebert iCOM shall activate an audible and visual alarm in the event of any of the following conditions: •...
  • Page 107 Liebert DSE™ Model DA250 LIEBERT ICOM™ CONTROL METHODS AND OPTIONS The Liebert iCOM shall be factory-set to allow precise monitoring and control of the condition of the air entering and leaving the unit. This control shall include predictive methods to control air flow and cooling capacity based control sensors installed.
  • Page 108 Liebert DSE™ Model DA250 MULTI-UNIT COORDINATION Liebert iCOM teamwork shall save energy by preventing multiple units in an area from operating in opposing modes. Teamwork allows the control to optimize a group of connected equipped with Liebert iCOM using the U2U (Unit-to-Unit) network. There shall be three modes of teamwork operation: •...
  • Page 109 Liebert DSE™ Model DA250 VIRTUAL MASTER As part of the robust architecture of the Liebert iCOM control, it shall allow for a virtual master that coordinates operation. The Virtual Master function shall provide smooth control operation if the group's communication is compromised. When the lead unit, which is in charge of component staging in teamwork, unit staging and standby rotation, becomes disconnected from the network, the Liebert iCOM automatically assigns a virtual master.
  • Page 110 Liebert DSE™ Model DA250 3.15 WINTER START TIME DELAY An adjustable software timer shall be provided to assist with compressor starting during cold weather. When the compressor starts, the low-pressure input shall be ignored for the period set in the user-adjustable timer. Once the delay after the compressor start has elapsed, the low-pressure input should remain in the normal state.
  • Page 111 Liebert DSE™ Model DA250 3.21 DIGITAL SCROLL SENSOR FAILURE The control shall monitor the status of the digital scroll sensor(s). If the control senses the thermistor becomes disconnected, shorted or the reading goes out of range, the user will be notified through an event on the local display and remote monitoring.
  • Page 112 Liebert DSE™ Model DA250 3.24 COMPRESSOR RUN TIME MONITORING • The control shall log these compressor statistics: • Number of compressor starts • Run hours • Average run time • Starts per day • Starts per day worst • Number of high-pressure alarms •...
  • Page 113 Liebert DSE™ Model DA250 MISCELLANEOUS OPTIONS HIGH-TEMPERATURE SENSOR—OPTIONAL The high-temperature sensor shall be factory-installed in the unit and shall be factory-set to 125ºF (52ºC). It shall immediately shut down the environmental control system when activated. The sensor shall be mounted with the sensing element in the return air.
  • Page 114 Liebert DSE™ Model DA250 QUICK RESTART FUNCTION—OPTIONAL Unit restart time for full cooling shall be 40 seconds or less after power to the unit has been restored, with fans starting within 15 seconds. The unit shall be equipped with a optional capacitive buffer to provide the Liebert iCOM with a minimum of 3 minutes of ride-through power.
  • Page 115 Liebert DSE™ Model DA250 HEAT REJECTION LIEBERT MCV CONDENSER SUMMARY These specifications describe requirements for a Liebert air-cooled condenser for a Liebert Thermal Management system. The condenser shall be designed to reject waste heat to outdoor air and to control refrigerant head pressure as indoor equipment loading and outdoor ambient conditions change.
  • Page 116 (from minimum to maximum) is 125°F (70°C) or less. The mode of the Liebert MC shall be controlled by the Liebert DSE iCOM control and shall be in either DX, EconoPhase or Idle Mode by each refrigerant circuit. Dual circuit condensers shall operate fans to meet airflow needs and mode of each circuit independent of the other.
  • Page 117 Cool temperatures, such as mild weather and at night, partial economization and power savings is provided with one pump activated and one compressor idled. Colder temperatures, such as winter weather, allow both Liebert DSE compressors to be idled and EconoPhase pumps to be controlled independently to provide full economization 5.12 CONDENSER HOUSING...
  • Page 118 Liebert DSE™ Model DA250 EXECUTION INSTALLATION OF THERMAL MANAGEMENT UNITS The customer or the customer's representative shall be responsible for the following: 6.1.1 General Install Thermal Management units in accordance with the manufacturer's installation instructions. Install units plumb and level, firmly anchored in locations indicated and maintain the manufacturer's recommended clearances.
  • Page 119 Vertiv | Liebert® DSE™ System Design and User Guide...
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