Liebert DCD User Manual
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Liebert DCD User Manual

Liebert DCD User Manual

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Liebert® DCD™
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  • Page 1 Liebert® DCD™ User Manual...
  • Page 2 Technical Support Site If you encounter any installation or operational issues with your product, check the pertinent section of this manual to see if the issue can be resolved by following outlined procedures. Visit https://www.VertivCo.com/en-us/support/ for additional assistance.

  • Page 3: Table Of Contents

    3.5 Water Quality 3.6 Water Temperature 4 Installation 4.1 Liebert DCD Frame Preparations 4.2 Installing the Liebert DCD Frame on a DCM Rack 4.2.1 Required Tools 4.3 Installing the Liebert DCD Door 4.4 Installing the Liebert DCD Swivel Joint Covers 4.5 Reversing Door Handle...
  • Page 4 5.7.3 Balancing Valves 5.8 Flexible Pipes 5.9 Connecting Liebert DCD Flex Pipe Hoses 5.10 Leak Checking 5.11 Filling the Unit 5.11.1 Bleeding Air from Liebert DCD 6 Installation Checklist and System Fill for Startup 7 Maintenance 7.1 General Maintenance 8 Specifications 8.1 Water Quality...

  • Page 5: Important Safety Guidelines

    Two properly trained and qualified people are required to move and install the module. The Liebert DCD weighs 210 lb. (95kg). Do not leave a Liebert DCD standing unattended on its side or its end without adequate support to prevent it from falling over. The Liebert DCD must be supported at all times or laid flat on protective material until it is installed.
  • Page 6 This can be caused, among other ways, by closing the ball valves on both the supply and the return pipes. Always allow for thermal expansion either by leaving at least one of the valves open or by opening the Liebert DCD’s bleed valve (see Figure 5.11 on page 41).

  • Page 7: Liebert Dcd Component Locations

    LIEBERT DCD COMPONENT LOCATIONS Figure I.1 Liebert DCD Component locations Vertiv | Liebert® DCD™ User Manual |...

  • Page 8: Model Number Nomenclature

    • S = Seaworthy (Air Freight) - Long Distance (Wooden Crate) 22 — SFA (Special Features) • X = SFAs Included • A = No SFAs 23 - 25 — Revision Identifier • Vertiv | Liebert® DCD™ User Manual |...

  • Page 9: Introduction

    Grounding Wire 000798169 1.3 Installation Considerations The Liebert DCD is designed for attachment to the rear of a computer cabinet with side panels. See Mechanical Considerations on page 13 for details. NOTE: The cooling with Liebert DCD works only if a strict air separation exists between server cold air intake and server warm air outlet.

  • Page 10: Storage And Transportation

    Two properly trained and qualified people are required to move and install the module. The Liebert DCD weighs 210lb. (95kg). It must be securely and properly fastened to the forklift or pallet jack, if being used to move the unit.

  • Page 11: General Product Information

    2 GENERAL PRODUCT INFORMATION 2.1 Product/System Description The Liebert DCD is an air-water heat exchanger that is integrated into the rear door of a server rack. The Liebert DCD meets the requirements of the EN 60950 standard. The design allows installation on the back of a server cabinet while maintaining access to the back of the servers while the chilled water connections remain stationary.

  • Page 12: Checking And Unpacking

    Check to be sure all required assemblies and parts have been received. The Liebert DCD is shipped in protective packaging and secured to a pallet (see Figure 2.4 on page 11). Do not remove these protective items from the Liebert DCD before it is at the installation location.
  • Page 13 Two properly trained and qualified people are required to move and install the module. The Liebert DCD weighs 210 lb. (95kg). Do not leave a Liebert DCD standing unattended on its side or its end without adequate support to prevent it from falling over. The Liebert DCD must be supported at all times or laid flat on protective material until it is installed.

  • Page 14: Module Handling

    Exercise care to prevent damage when unpacking and handling the module. Use a forklift or pallet jack to move the Liebert DCD. If multiple Liebert DCD modules are delivered, they will be shipped on a pallet with up to four modules. A pallet jack will be required to move these modules to the installation location.
  • Page 15 Do not unpack the Liebert DCD before moving it to the installation location. Once at the installation point: Multiple Unit Shipments—Cut the bands and place all packaged modules on the floor for unpacking. 2. Slide the upper row of spring clips upward and remove them (Figure 2.4 below).
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  • Page 17: Mechanical Considerations

    The server fans force air heated by the rack equipment through the unit’s air-water heat exchanger where it is cooled. The air side pressure drop-flow rate dependency curve is shown in Figure 8.7 on page 57. Vertiv | Liebert® DCD™ User Manual |...

  • Page 18: Determining Placement In The Conditioned Space

    The server fans draw air into the rack where the equipment heats it. The server fans force the heated air across the Liebert DCD coil. The Liebert DCD has a low air-side pressure drop, similar to a rack with perforated doors.

  • Page 19: Water Quality

    DCD is mounted on. 3.5 Water Quality For reliable function of the Liebert DCD, chilled water must be available in an appropriate amount, at the appropriate temperature and pressure. The water quality must be in accordance with VGB-R 455 P. (see Water Quality on page 50)
  • Page 20 Use of Glycol On Request (Not Recommended) Chilled Water Connection Rack - Rear Side (Top or Bottom Connection); 1" NPT Condensate Tray Drain Connection Rack - Rear Side; 5/8" Maximum Operating Pressure 145psi (10bar) Vertiv | Liebert® DCD™ User Manual |...

  • Page 21: Installation

    4 INSTALLATION These instructions apply only to installing the Liebert DCD on a DCM™ rack by Knurr®. For racks built by other makers, refer to the instruction sheet shipped with the adapter kit to install the adapter and Liebert DCD frame.

  • Page 22: Installing The Liebert Dcd Frame On A Dcm Rack

    NOTE: If installing the Liebert DCD on any type of rack other than the DCM, an adapter kit is necessary. Follow the installation instructions included with the rack adapter kit for the specific rack. Once the adapter kit and frame are installed, continue the installation, following the steps in...
  • Page 23 Figure 4.1 Position of frame holes, spring nuts and diamond nuts on the DCM Vertiv | Liebert® DCD™ User Manual |...
  • Page 24 4. Lay the Liebert DCD frame on the protective material. 5. Insert the spring nuts into the groove of the vertical aluminium profile (see Figure 4.2 below). 6. Move spring nuts to the marked positions using a scratch awl or similar tool.
  • Page 25 Figure 4.4 Condensate drain assembly 11. Connect the Condensate Hose Adapter to the Condensate Tray. 12. Lift the Liebert DCD frame and align it with the server rack again. Figure 4.5 Align the Liebert DCD frame with the rack Vertiv | Liebert® DCD™ User Manual |...

  • Page 26: Installing The Liebert Dcd Door

    13. Insert and partly tighten bolts to hold it in place. NOTE: Performing this step may be easier if a board or similar object is placed under the DCD frame to hold it in place. 14. Insert and lightly tighten the bolts, working all around the perimeter to prevent the frame from twisting and to ensure the parts fit properly (see Figure 4.6 below).
  • Page 27 Two properly trained and qualified people are required to move and install the module. The Liebert DCD weighs 210 lb. (95kg). Do not leave a Liebert DCD standing unattended on its side or its end without adequate support to prevent it from falling over. The Liebert DCD must be supported at all times or laid flat on protective material until it is installed.
  • Page 28 8. Set the door in the frame—Angle the bottom of the door toward the frame and insert the door (see Figure 4.10 on the facing page). NOTE: Performing this step may be easier if a board or similar object is placed under the DCD frame to hold it in place.
  • Page 29 9. Fasten the door hinges to the frame, starting with the top hinge and finishing with the bottom hinge (see Figure 4.11 on the next page). NOTE: Tilting the door may ease installing the hinge bolts. Vertiv | Liebert® DCD™ User Manual |...
  • Page 30 Figure 4.11 Liebert DCD door hinge location 10. Check that the door moves freely. If there are any irregularities or roughness in the movement of the door: • Check for obstructions or loosen screws of the hinges and adjust alignment.
  • Page 31 4.14 on the next page). • Open-end wrench 1-5/8" (41mm) or an adjustable wrench with maximum size of 2" (51mm) • Open-end wrench 1-7/16" (36mm) or an adjustable wrench with maximum size of 2" (51mm) Vertiv | Liebert® DCD™ User Manual |...

  • Page 32: Installing The Liebert Dcd Swivel Joint Covers

    Figure 4.14 Tightening piping 17. Check to ensure the door swings freely. 4.4 Installing the Liebert DCD Swivel Joint Covers Too Required • Socket hexagonal screw driver - 5/16" Allen (8mm) for M5 screws The Swivel Joint Covers can be identified by the number of identification holes on each cover.
  • Page 33 Figure 4.15 Swivel joint cover identification and location Open the Liebert DCD door; the door must be open for the Swivel Joint Covers to be installed. 2. Install the outer Swivel Joint Covers on the door (see Figure 4.16 below) 3.
  • Page 34 Figure 4.17 Inside swivel joint cover locations 4. Fasten screws using the hexagonal screwdriver or socket wrench. 5. Connect the earth (ground) wire of the door to the frame of the Liebert DCD (see Figure 4.18 below). Figure 4.18 Securing ground wire 6.

  • Page 35: Reversing Door Handle

    4.5 Reversing Door Handle If installing the Liebert DCD for top chilled water connection, the handle would be upside down. The handle will function but can be reversed for convenience. To reverse the handle: Open the door and remove all the bolts holding the door handle and lock assembly, including the four brackets.
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  • Page 37: Piping

    This can be caused, among other ways, by closing the ball valves on both the supply and the return pipes. Always allow for thermal expansion either by leaving at least one of the valves open or by opening the Liebert DCD’s bleed valve (see Figure 5.11 on page 41).
  • Page 38 When using a chilled water distribution unit such as the Liebert DCP, a ring design (see Figure 5.2 below) or Tichelmann ring (see Figure 5.3 below) design may be employed. In these designs, the pressure drop for each of the units is approximately the same, which results in even cooling performance.

  • Page 39: Connection Methods And Points

    Figure 5.5 below andFigure 5.6 on the next page. The assembly and connection means used for piping the Liebert DCD system are the same as those used in conventional chilled water systems. Observe all standard practices during installation and startup to prevent damage and contamination.

  • Page 40: Insulation

    The Liebert DCP™ circulates the chilled water to Liebert DCD while preventing condensation by maintaining the water temperature above the room dew point. • Ensures that the proper flow rate to the Liebert DCD is occurring. This is a critical factor in achieving and maintaining the needed capacity. •...

  • Page 41: Chilled Water Connections

    Liebert DCD Flex Pipe kits are available in 10ft. (3m) in nominal length with quick connections (see Figure 5.8 on the next page). The kit consists of the hose, a threaded adapter for to attach to the Liebert DCD and an adapter to connect to the field header.
  • Page 42 Figure 5.8 Liebert DCD Flex Pipe connection kit and header adapter Vertiv | Liebert® DCD™ User Manual |...

  • Page 43: Connecting Liebert Dcd Flex Pipe Hoses

    Connect the supply hose header adapter to the supply header. 2. Connect the return hose header adapter to the return header. 3. Connect the supply hose door adapter to the Liebert DCD supply connection. 4. Connect the return hose door adapter to the Liebert DCD return connection.

  • Page 44: Leak Checking

    5.11.1 Bleeding Air from Liebert DCD The Liebert DCD has two Schrader valves, one at the top and one at the bottom. The two valves permit rotating the Liebert DCD so that the unit may have bottom or top chilled water connections. Air trapped in the unit or piping must be bled from the valve at the top.
  • Page 45 2. Depress the pin to open the valve. 3. Keep the Schrader valve open until the water coming out has no bubbles. Figure 5.11 Schrader valve location Vertiv | Liebert® DCD™ User Manual |...
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  • Page 47: Installation Checklist And System Fill For Startup

    Top and bottom of server cabinet are blocked and any cable entries are sealed to minimize air leakage. Location Date Installer Signature Customer Site Name Customer Site Address Site Contact Phone Number Installer Name Installer Address Ambient Room °F (°C) Temperature Room Humidity at Site % Relative Humidity of Commissioning Vertiv | Liebert® DCD™ User Manual |...
  • Page 48 External Flow Regulator External Isolation Valves Mechanical Functions Damage to Heat Exchanger/ None Existing Connections/ Fins/Tubes/Surface Remarks Thermodynamic Checks Pipe Duct Inlets/Cable Sealed Remarks Condensed Drain Connected Remarks: Thermodynamic Checks Condensate on Coil Surface Vertiv | Liebert® DCD™ User Manual |...
  • Page 49 Cabinet Temperature Behind of Heat Exchanger °F °C Chilled Water System Bled Chilled Water System Pressure Tested Proper Chilled Water Flow Rate Set to Liebert DCD External Volume Flow External Correctness of values above is hereby affirmed Startup Performed By...
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  • Page 51: Maintenance

    Clean the heat exchanger fins with a a vacuum cleaner, soft brush or compressed air. 7.1 General Maintenance Check the heat exchanger for dirt and debris. 2. Check functionality of the isolation valves. 3. Check the chilled water system for leaks. Vertiv | Liebert® DCD™ User Manual |...
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  • Page 53: Specifications

    Replacement Parts Top Swivel Cover (Attaches to Frame) 309617P5 Bottom Swivel Cover (Attaches to Frame) 309617P6 Top Swivel Cover (Attaches to Door) 309617P7 Bottom Swivel Cover (Attaches to Door) 309617P8 Self-Adhesive Foam 309894P3 Vertiv | Liebert® DCD™ User Manual |...

  • Page 54: Water Quality

    Carbonate hardness (3 - 8) °dH Free carbon dioxide (8 - 15) mg/dm3 8 - 15mg/dm Combined carbon dioxide 0mg/dm Aggressive carbon dioxide < 10mg/dm Sulfides < 50mg/dm Oxygen < 250mg/dm Chloride ions Vertiv | Liebert® DCD™ User Manual |...
  • Page 55 < 0.2mg/dm Manganese Conductivity < 30S/cm < 500mg/dm Solid residue from evaporation < 25mg/dm Potassium manganese consumption < 3mg/dm Suspended matter 3 -15 mg/dm Partial Flow Cleaning Recommended > 15mg/dm Full Flow Cleaning Vertiv | Liebert® DCD™ User Manual |...

  • Page 56: Capacity Performance

    8.2 Capacity Performance Figure 8.1 Performance @ 5.2m Vertiv | Liebert® DCD™ User Manual |...
  • Page 57 Figure 8.2 Performance @ 22.9 US GPM Figure 8.3 Performance @ 3.5 m Vertiv | Liebert® DCD™ User Manual |...
  • Page 58 Figure 8.4 Performance @ 15.4 US GPM Vertiv | Liebert® DCD™ User Manual |...
  • Page 59 Figure 8.5 Performance @ 1.8 m Vertiv | Liebert® DCD™ User Manual |...
  • Page 60 Figure 8.6 Performance @ 7.9 US GPM Vertiv | Liebert® DCD™ User Manual |...
  • Page 61 Figure 8.7 Air-side pressure drop Figure 8.8 Water-side pressure drop Vertiv | Liebert® DCD™ User Manual |...
  • Page 62 Vertiv | Liebert® DCD™ User Manual |...
  • Page 64 VertivCo.com | Vertiv Headquarters, 1050 Dearborn Drive, Columbus, OH, 43085, USA © 2017 Vertiv Co. All rights reserved. Vertiv and the Vertiv logo are trademarks or registered trademarks of Vertiv Co. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness herein, Vertiv Co.

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