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Vertiv Liebert CRV300DX User Manual
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Vertiv Liebert CRV300DX User Manual

Vertiv Liebert CRV300DX User Manual

50 hz, 11-20 kw a version
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Liebert® CRV300DX
50 Hz, 11-20 kW
A Version
User Manual
English, Cod. 265081, rev. 10.01.2018

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Summary of Contents for Vertiv Liebert CRV300DX

  • Page 1 Liebert® CRV300DX 50 Hz, 11-20 kW A Version User Manual English, Cod. 265081, rev. 10.01.2018...

  • Page 3: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS CAUTION • The manual must be retained for the entire service life of the machine; • The user must read the manual carefully before carrying out any operations on the machine; • The control must be used exclusively for the purpose for which it is intended; incorrect use of the control shall release the manufacturer any liability.
  • Page 4 WARNING Risk of refrigerant system rupture or explosion from overpressurization. Can cause equipment damage, injury or death. If a pressure relief device is not provided with the condenser unit, the system installer must provide and install a discharge pressure relief valve rated for a maximum of 45 bar in the high side refrigerant circuit. Do not install a shut-off valve between the condenser and the relief valve.
  • Page 5 model and serial number Attention: data relevant to the supplied unit are indicat- ed on the inboard label (see below empty fac-simile). Data in the manual refer to standard conditions and can be modified without any advance notice. Data plate fac-simile for 50 Hz units, CE marked POS.
  • Page 6 Digit Nomenclature The unit is fully defined by twenty-five digits. 0 1 0 Digit 3, 4 and 5 Digit 1 and 2 Size: Cooling Capacity “kW” (approx.) Family CR Nominal Cooling Capacity Digit 6 - Air Discharge Digit 15 - Coil R = Horizontal airflow 1 = Air cooled DX version Digit 7 - System Type...

  • Page 7: Table Of Contents

    INDEX IMPORTANT SAFETY INSTRUCTIONS ............1 SAVE THESE INSTRUCTIONS .
  • Page 8 Appendix Humidair Humidifier ............A Technical data Table .

  • Page 9: Preliminary Operations

    1.0 PRELIMINARY OPERATIONS WARNING! Risk of top-heavy unit falling over. Can cause death, injury and equipment damage. Read all of the following instructions before attempting to move, lift or remove packaging from the unit. CAUTION! Risk of sharp edges, exposed and chipped fasteners. Can cause personal injury. Only personnel wearing appropriate safety headgear, gloves, shoes and glasses should attempt to move, liftor remove packaging from the unit or prepare the unit for installation.

  • Page 10: Operating Limits

    1.0 PRELIMINARY OPERATIONS 1.3 Operating limits The units are designed to operate within the working ranges (see Tab. a). These limits refer to new machines or to those that have been correctly installed and serviced. The warranty clauses are no longer valid in the case of any damage or malfunction that may occur during or due to operation outside the application values.

  • Page 11: Product Description

    1.0 PRELIMINARY OPERATIONS 1.5 Product Description The Liebert CRV is an air-cooled direct expansion Thermal Management unit to be installed in a row of high den- ® sity computing racks in a “hot-aisle-cold-aisle” configuration. Air heated by the room equipment enters the unit from the hot aisle;...
  • Page 12 1.0 PRELIMINARY OPERATIONS Fig. b - Component location FRONT FRONT Top electrical supply entrance iCOM Control Display Knockouts for bottom entrance of electrical and piping connections Casters and leveling feet Filters Electrical Box Main disconnect switch Top supply and return refrigerant connections EC fans Baffles Liebert CRV- UM - 265081 - 10.01.2018...
  • Page 13 1.0 PRELIMINARY OPERATIONS Fig. c - Component location CR021RA CR011RA Liebert CRV- UM - 265081 - 10.01.2018 1 - 5...

  • Page 14: Positioning - Unit Placement

    Use walls or opposing racks to minimize the width of the hot and cold aisles; the optimal width is between 0.6 and 1.8 m. For specific recommendations on how to optimize your space for row based cooling, contact your local Vertiv representative.

  • Page 15: Liebert ® Crv Applied In Smartaisle™ Cold Aisle Containment

    2 - POSITIONING - UNIT PLACEMENT Cooling unit location within a row becomes less critical when deployed in SmartAisle™ containment, but it is recommended that the Liebert CRV be evenly spaced in each row. Using room barriers, such as the walls shown in Fig. f and Fig. g, can be very effective in ®...

  • Page 16: Unpacking And Installation

    3 - UNPACKING AND INSTALLATION 3.1 Reference guide for receiving, unpacking, and preparing for installation. DO NOT THROW AWAY! WARNING RISK OF TOP HEAVY UNIT FALLING OVER! IMPROPER HANDLING CAN CAUSE EQUIPMENT DAMAGE, INJURY, OR DEATH! READ ALL OF THE FOLLOWING INSTRUCTIONS BEFORE ATTEMPTING TO MOVE, LIFT OR REMOVE PACKAG- ING FROM UNIT.
  • Page 17 3 - UNPACKING AND INSTALLATION 3.4 Unpacking and Removing the Liebert CRVfrom the pallet ® Wooden crate 1. Open all the latches on the shipping crate. 2. Remove top and side wooden panels of shipping crate. DET. A Cardboard box Plastic angle Polyester strap typ 4 places...

  • Page 18: Installation

    3 - UNPACKING AND INSTALLATION 3.5 Installation Opening the front panel, there are: serial number of the unit for service (a) 1. To prepare installation open the electrical panel: Remove filter Remove the grille and brackets Pull out the electrical panel 2.
  • Page 19 Before Startup adjust the frontal panel baffle to provide the right air flow direction. This operation is very important in order to obtain maximum efficiency from the Liebert CRV unit and to prevent rack’s overheating. For ® further information contact Vertiv technical service personnel. • Open the door •...
  • Page 20 3 - UNPACKING AND INSTALLATION Liebert CRV- UM - 265081 - 10.01.2018 3 - 12...

  • Page 21: Refrigeration Connections

    4 - REFRIGERATION CONNECTIONS Use only condenser units designed for operation with R410A refrigerant. The unit is designed for connection choosing from top and bottom. 4.1 Refrigeration pipeline connections Air - cooled (A) units Top refrigeration pipeline connections DET. B Bottom refrigeration pipeline connections The air condensing units are delivered heliumpressurized at 1 bar.
  • Page 22 4 - REFRIGERATION CONNECTIONS DET. A DET. B DET. C Liebert CRV- UM - 265081 - 10.01.2018 4 - 14...
  • Page 23 The diameter required is stated in Tab. c. If the installer intends to use pipes of a larger diameter (e.g. for long winding runs) then consult Vertiv Technical Support first. Use as short refrigeration pipelines as possible to minimize the total charge of re- frigerant and the pressure drops.
  • Page 24 4 - REFRIGERATION CONNECTIONS 4.1.4 Installing pipelines THE FOLLOWING OPERATIONS MUST BE CARRIED OUT BY AN EXPERIENCED REFRIGERATION TECHNICIAN. The operation of opening the valves of the room unit pressurized with helium (at 1 bar) and the cutting of the pipes at the bottom of the unit must be carried out as final operations, together with the emptying of the whole system.

  • Page 25: Vacuum Creation And Refrigerant Charge

    4 - REFRIGERATION CONNECTIONS 4.2 Vacuum creation and refrigerant charge Check the refrigerant type to be used on the data plate of the air conditioner and on the refrigerating compressor. Fig. j - Pump and refrigerant charging cylinder connection for system vacuum creation and refrigerant charge R.L.

  • Page 26: Refrigeration Circuits

    4 - REFRIGERATION CONNECTIONS 4.2.2 Refrigerant charge Air - cooled (A) units Start the unit as described in para. 7.1. Manually start the compressor at 100% modulation (ensure the unit is not in the dehumidification phase). Guarantee a constant condensation temperature (preferably 45°C); if necessary, partially obstruct the condenser coil surface or limit its ventilating power to obtain these conditions.

  • Page 27: Water Connections

    5 - WATER CONNECTIONS DET. B DET. A OPTION TOP connections DOWN connections Condensate pump + humidifier Available choice Available choice Condensate pump Available choice Available choice Humidifier single choice Nothing (drain only) single choice 5.1 Water connections – humidifier supply and condensate drain (all units) Units with condensate pump and humidifier are pre-set to be connected from the top.
  • Page 28 5 - WATER CONNECTIONS Fig. k - Condensate drain min. 20 cm min. 10 cm BRACKET to be connected by user Humidifier (optional): See Enclosure A. • Liebert CRV- UM - 265081 - 10.01.2018 5 - 20...

  • Page 29: Electrical Connections

    6 - ELECTRICAL CONNECTIONS 6.1 Electrical connections BOTTOM CABLE ENTRY Use rear knockouts on the back of the main switch for main supply entry. High voltage connections Low voltage connections SOME COMPONENTS NOT SHOWN FOR CLARITY Generlal cable routing path shown. Wiring must be run in conduit and must be inside TOP ELECTRICAL CONNECTIONS Liebert...

  • Page 30: Pull Out The Electrical Panel

    Delta with corner ground • Delta with grounded center tap. If the unit must be installed in the IT System, contact the Vertiv Technical department prior to installation. 6.3 Pull out the electrical panel 1) open back door 2) remove filters and shut -off main switch Liebert CRV- UM - 265081 - 10.01.2018...
  • Page 31 6 - ELECTRICAL CONNECTIONS 3) remove screws from brackets and take them out 4) pull out electrical panel Liebert CRV- UM - 265081 - 10.01.2018 6 - 23...

  • Page 32: Protective Features Of Electrical Heaters

    6 - ELECTRICAL CONNECTIONS 6.4 Protective features of Electrical Heaters In the event of over temperature of electrical heater, the temperature intervenes and the thermal protection interrupts the current. If the temperature rises over 110°C, the thermofuse intervenes and generate an alarm. 6.5 Temperature probes placed on racks Each unit is provided with at a minimum of 3 temperature probes (standard feature) and a maximum of 10.
  • Page 33 6 - ELECTRICAL CONNECTIONS Do not secure in front of a blanking panel. For this operation use the support provided for each probe . The optimum position of the rack temperature sensors will vary from installation to installation. A standard position is at a height of 1.5 m. Due to air flow behaviour (see Chap.
  • Page 34 6 - ELECTRICAL CONNECTIONS Fig. m - Temperature remote sensor - 2T type SENSOR POSITION IN FRONT OF THE RACK BOTTOM INLET (possible with raised floor) TEMPERATURE SENSOR 1 (Install temperature sensors on DOOR the perforated portion of the rack RACK door using the supplier zip-ties) POST OF...

  • Page 35: Start-Up

    7- START-UP 7.1 First start-up (or after long standstill) TO PREVENT COMPRESSOR DAMAGE THE CRANKCASE(S) MUST BE PREHEATED FOR AT LEAST 4 HOURS BEFORE CONDI- TIONER START-UP (FAILURE DUE TO INCORRECT PROCEDURE INVALIDATES THE COMPRESSOR GUARANTEE). Start the air conditioner as follows: Open all valves in the refrigeration circuit according to the instruction label attached to the valve.

  • Page 36: Operation

    8 - OPERATION Unit operation is completely automatic. The below sequence explains how the unit operates : • The air, sucked in by the fans, which operate continuously, enters the unit. • The air is immediately filtered. • The TEMPERATURE sensor or HUMITEMP (temperature + rel. humidity) sensor (check type installed), verifies the state of the inlet air, and relays this information to the control system.

  • Page 37: Calibrations & Regulation (At Start-Up)

    9 - CALIBRATIONS & REGULATION (AT START-UP) The air conditioner has already been factory tested and calibrated, but it is very important to check, at startup, the superheating of ther- mostatic valve. • The air conditioner has already been factory calibrated. •...

  • Page 38: Maintenance / Spare Parts

    10.2 Spare parts Only original spare parts made by Vertiv may be used. Using third-party material can invalidate the warranty. When making inquiries al- ways refer to the “Component List” supplied with the equipment and specify the model number, serial number and, if available, the number of the part to be replaced as well.

  • Page 39: Aircooled Condenser

    10 - MAINTENANCE / SPARE PARTS 10.5.2 Inspecting and replacing condensate pump Pump replacement: • Disconnect power to unit using disconnect switch. • Open the door • If the unit has the humidifier, remove it. • Remove the panel positioned in the humidifier compartment. The panel is fixed with two screws REMOVE SCREW AND •...
  • Page 40 10 - MAINTENANCE / SPARE PARTS REMOVE SCREW FROM REMOVE 3 CENTRAL FANS 3 CENTRAL FANS SUPPORTS DET. 1:5 REMOVE SCREW FROM HEATERS REMOVE HEATERS DET. 1:5 Liebert CRV- UM - 265081 - 10.01.2018 10 - 32...
  • Page 41 10 - MAINTENANCE / SPARE PARTS 10.8 Replacing a Fan WARNING! Risk of electric shock and contact with high speed rotating fans. Can cause injury or death. Switch off all local and remote electrical supplies, verify that power is off with a voltmeter and verify that all fans have stopped rotating before working inside the unit cabinet or disconnecting the fan power wires.

  • Page 42: Refrigeration Circuit

    10 - MAINTENANCE / SPARE PARTS Maintenance schedule MAINTENANCE PERIOD EVERY COMPONENT monthly 3 Months 6 Months 1 Year by user Check unit/remote display for clogged-filter warning Check for irregular noise from unit fans GENERAL Check for irregular noise from compressor Check for irregular noise from remote condenser fan/s (if applicable) Check state of filters...

  • Page 43: Dismantling The Unit

    10 - MAINTENANCE / SPARE PARTS Normally 1 or 2-litre cans are available for this purpose; once they are opened, they must not be used after a long period, as the oil ab- sorbs humidity. The taps of the compressor must therefore only be opened after the whole system has been subjected to vacuum and partial filling. 10.9.2 Oil topping-up of an installed circuit If oil leakages occur, the topping-up operation is necessary.

  • Page 44: Unit Diagnostic

    PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Dirty filters Replace filters False filter clogs Call Vertiv Service Incorrect positioning of remote temperature Verify remote temperature sensors correct positioning sensor/s Remote temperature sensor/s issue Call Vertiv Services (A units) verify remote condenser fan/s are running...
  • Page 45 Enclosure A - HUMIDAIR HUMIDIFIER App. A.1 Electrode humidifier The operation of immersed electrode humidifiers is based on a very simple physical principle. As common drinking water contains a certain quantity of dissolved mineral salts, and is consequently slightly conductive, applying a volt- age to metal electrodes immersed in the water creates an electric current that heats the water until it produces steam (Joule effect).
  • Page 46 Enclosure A - HUMIDAIR HUMIDIFIER There is no relationship between hardness and conductivity of the water. Important: • Do not treat the water with softeners, this may cause the entrainment of foam, compromising the operation of the unit; • Do not add disinfectants or anticorrosive compounds to the water, as these are potential irritants; •...
  • Page 47 Note 1 In the case of low water conductivity consult Vertiv Service. Note 2 When starting with an empty cylinder, the water conductivity is normally insufficient for the HUMIDIFIER STEAM OUTPUT to be reached immediately.
  • Page 48 Enclosure A - HUMIDAIR HUMIDIFIER Unscrew and remove the drain valve armature (D). Clean all parts of the drain valve using a commercially available descaling agent (to remove any incrustations). Detach the hose from the supply valve. 10. Remove the supply valve connection (N). 11.
  • Page 49 Enclosure B - Technical data table Tab. 1 - Electrical data RESIDUAL-CUR- RENT CIRCUIT Configuration Model Unit Power supply FLA [A] LRA [A] (**) BREAKERS I∆n = 0.3A (400V) (*) CR011 230V/1ph/50Hz 16.1 23.1 (9.1) 25 A Curve C Cooling Fan + compressor CR021 400V/3ph/50Hz...
  • Page 50 Enclosure B - Technical data table Tab. 3 - Calibrations of electrical components Refrigeration Circuit Item COMPONENT SETTING NOTES Contact (see iCOM manual) Range 0 -50 barg High Pressure Transducer 4-20 mA (see iCOM manual) Range 0-18 barg Low Pressure Transducer 4-20 mA STOP 42.0±1 barg...
  • Page 51 Enclosure B - Technical data table Tab. 4b -Air cooled condenser refrigerant charge BASE REFRIGERANT CHARGE MODEL [kg] HCR 17 1.30 HCR 24 1.90 HCR 33 2.00 HCR 43 3.10 HCR 51 4.30 HCR 59 4.60 HCR 76 6.30 HCR 88 9.40 BASE REFRIGERANT CHARGE MODEL...
  • Page 52 Enclosure C - Installation Drawing Fig. 1. OVERALL DIMENSIONS / SERVICE AREA REAR VIEW HOT AIR FRONT VIEW Rear access REAR VIEW diagram COLD TOP VIEW Front access FRONT VIEW diagram with display Liebert CRV- UM - 265081 - 10.01.2018 C - 44...
  • Page 53 Enclosure C - Installation Drawing Access required to install the unit be- tween existing racks within the row, Front or Rear clearance required Tab. 1 - Overall dimensions Height Depth Installation depth Weight Models CR11RA 2000 1100 1250 CR21RA 2000 1100 1250 Liebert CRV- UM - 265081 - 10.01.2018...
  • Page 54 Enclosure C - Installation Drawing Fig. 2. HOLE ON THE RAISED FLOOR FOR PIPING AND ELECTRICAL CONNECTIONS FRONT VIEW UNIT AREA UNIT AREA FRONT VIEW Liebert CRV- UM - 265081 - 10.01.2018 C - 46...
  • Page 55 Enclosure C - Installation Drawing Fig. 3. ELECTRICAL CONNECTIONS - ENTRY TOP INLET FRONT VIEW BOTTOM INLET Liebert CRV- UM - 265081 - 10.01.2018 C - 47...
  • Page 56 Enclosure D - Refrigerant, Hydraulic and Electrical Connections Fig. 1. CR011RA - CR021RA connections DET. B DET. A TOP CONNECTIONS BOTTOM CONNECTIONS 56.9 DET. C 58.5 EC-HVT1 EC-HVT2 EC-LVT1 EC-HVB EC-LVB1 EC-LVT2 EC-LVB2 CR011RA- CR011RA- Unit Top Connection Unit Bottom Connection CR21RA CR21RA OD 12 (Rp ½)
  • Page 57 Enclosure D - Refrigerant, Hydraulic and Electrical Connections Fig. 2. Electrical panel layout X1/1 X1/1 -X1/2 -X1/2 Wire bridge Liebert CRV- UM - 265081 - 10.01.2018 D - 49...

  • Page 58: Optional Electrical Connections

    Enclosure D - Refrigerant, Hydraulic and Electrical Connections ELECTRICAL FIELD CONNECTIONS DESCRIPTIONS 50 Hz STANDARD ELECTRICAL CONNECTIONS Primary high voltage entrance - Quantity (2) 28mm diameter concentric knockouts located in bottom of panel Secondary high voltage entrance - Quantity (2) 35mm diameter concentric knockouts located in top of panel Primary low voltage entrance - Quantity (1) 18mm diameter concentric knockouts located in bottom of unit Secondary low voltage entrance - Quantity (2) 22mm diameter concentric knockouts located in top of panel Earth ground - Terminal for field supplied earth grounding wire.
  • Page 59 Enclosure E - Refrigeration & Hydraulic Circuits Fig. 1 - LIEBERT CRV: CR011RA - CR021RA (to disconnect for bottom connections) POS. DESCRIPTION POS. DESCRIPTION COMPRESSOR SHUT-OFF VALVE EVAPORATING COIL CRANKCASE HEATER LOW PRESSURE TRANSDUCER HIGH PRESSURE SWITCH AIR COOLED CONDENSER LIQUID SEPARATOR LIQUID RECEIVER SHUT-OFF SOLENOID VALVE...
  • Page 60 Fabrikant - - Producent Κατασκεναστηζ Vertiv S.r.l. - Zona Industriale Tognana Via Leonardo da Vinci, 16/18 - 35028 Piove di Sacco - Padova (Italy) Il Fabbricante dichiara che questo prodotto è conforme alle direttive Europee: The Manufacturer hereby declares that this product conforms to the European Union directives: Der Hersteller erklärt hiermit, dass dieses Produkt den Anforderungen der Europäischen Richtlinien gerecht wird:...
  • Page 61 Leonardo Da Vinci 16/18, Zona Industriale Tognana, 35028 Piove di Sacco (PD) Italy, Tel: +39 049 9719 111, Fax: +39 049 5841 257 © 2016 Vertiv Co. All rights reserved. Vertiv, the Vertiv logo and Vertiv Liebert CRV300DX 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.

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