Vertiv Liebert PDX BF121 User Manual
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Vertiv Liebert PDX BF121 User Manual

Vertiv Liebert PDX BF121 User Manual

40-165 kw indoor room cooling units with modulating capacity a/w/f/d/h version 50 hz
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Liebert® PDX
40-165 kW Indoor Room Cooling Units
with Modulating Capacity
A/W/F/D/H Version 50 Hz
User Manual
English, Cod. 265046, rev. 01.03.2018

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Summary of Contents for Vertiv Liebert PDX BF121

  • Page 1 Liebert® PDX 40-165 kW Indoor Room Cooling Units with Modulating Capacity A/W/F/D/H Version 50 Hz User Manual English, Cod. 265046, rev. 01.03.2018...

  • Page 3: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This document, written in English, is the original version. Conventions DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a hazardous situation that, if not avoided, could result in death or serious injury. CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury.
  • Page 4 WARNING The supply cable of the main switch contains live high-voltage. • The manufacturer highly recommends that the final customer installs on site an external main switch, easy to reach and to facilitate a quick and easy shutdown enabling the power of the unit to be cut off. Refer to the unit electrical schematics for the installation.
  • Page 5 Notice: data relevant to the supplied unit are indicated on the inboard label (see below empty copy). Data in the manual are referred to standard conditions and can be modified without any advance notice. POS. DESCRIPTION Compressor Full Load Ampere [A] Compressor Locked Rotor Ampere [A] Compressor quantity Evaporator fan Full Load Ampere [A]...
  • Page 6 Model Nomenclature /(DX unit) The unit is fully defined by twenty two digits. Digit 7 System Type Air Cooled Digit 6 Water Cooled Digit 1 and 2 Air Discharge Freecooling (mixed mode) Liebert ® Upflow Dualfluid chilled water + air cooled Downflow Frontal Dualfluid chilled water + water cooled Downflow Up...
  • Page 7 P = (1) IntelliSlot Unity Card for Modbus, BACnet, SNMP and WEB S = Seaworthy C = (1) IntelliSlot Sitescan Card (IS-485EXI) Digit 22 - Special Requirements A = Standard Vertiv Digit 20 - Sensors X = Special Vertiv 0 = None...

  • Page 8: Table Of Contents

    Index 1 - General description ..............1 1.1 - Direct expansion, air cooled unit - A versions .
  • Page 9 Enclosures Electrode Humidifier ............... . . A - 1 Technical data tables .

  • Page 10: General Description

    1 - General description The Liebert PDX is a full- featured precision air conditioner intend- ® restricting the heat rejection and allowing the system running with- ed for data centers, network closets, technological rooms (labora- out interruptions. If, after a defined time, the condensing pressure tories, metrological rooms, museums), new and existing construc- comes back within the limit, the capacity will be modulated in the tions, raised and non- raised floors, moderate to high density heat...

  • Page 11: Direct Expansion, Air Cooled Unit - A Versions

    1.1 - Direct expansion, air cooled unit - A versions The condenser is fitted with a modulating valve (8) for the automat- ic control of condensing pressure. The unit is provided with compressor(s) (1) that pumps the hot For safety reason, a relief valve (9) is installed on the liquid receiv- gaseous refrigerant into an outdoor air-cooled condenser (2).

  • Page 12: Dual Fluid, Air Cooled Unit - D Versions

    Approved Remote Air Condenser To ensure correct operation, best performance, and longest life the units must be connected to remote condensers approved by Vertiv. The warranty clauses are no longer valid if the unit is connected to an unapproved remote condenser.

  • Page 13: Preliminary Operations

    2 - Preliminary operations Relative position room unit vs. remote condenser up to 60 m up to 100 m up to 60 m From unit to condens- equivalent equivalent equivalent er, max distance length length length 2.1 - Safety Information From unit to condens- from 20 m to from 30 m to...

  • Page 14: Handling The Unit While Packaged

    2.5 - Handling the Unit While Packaged 2.7 - Moving to the Installation Location with Piano Jacks • Transport unit using a fork lift or pallet jack; otherwise use a crane with slings, in this case use spreader bars to avoid risk Make sure the floor can support the unit when being moved of crushing.

  • Page 15: Assembly

    2) Remove the front and back panels Pack- from the fan top plenum. Models aging [kg] [kg] [kg] [kg] [kg] Insert 4 shackles (M8, not supplied) in [kg] the upper frame. Standard Height Unit PX044 3) Remove 4 bolts from the fan top PX054 plenum pallet, two on each side, if not PX062...

  • Page 16: Extended Height Unit: Downflow Up, Downflow Down

    11) Use piano jacks to move the 7) Fix the two modules with the 4 hex unit, as described in chapter 2.7. head screws supplied Place protective material between the unit and the piano jacks and 8) Run the EC Fan power cable po- straps.

  • Page 17: Positioning: Downflow Down

    5 - Refrigeration connections 1) To move the unit use the piano jacks. Make sure the floor can support the unit when being moved with piano 5.1 - Refrigeration pipeline connections jacks. (A and D) 2) Place protective material between the unit and the piano jacks and straps.
  • Page 18 Tab. c - Piping insulation and condenser installation Piping type Piping location Insulation requirements Indoor Strictly Required Insulation Outdoor Just for Safety or Aesthetic Reasons Indoor No Insulation Liquid Outdoor Strictly Required Condenser Condenser and Condenser below Conditioner Condenser above Conditioner position Conditioner at same level (NOT RECOMMENDED)
  • Page 19 Wash out the pipelines as follows: • Plug up the free ends of the pipes. • Connect a helium or nitrogen cylinder, fitted with a reducer (max. pressure 10 bar), to the ¼” SAE Schrader valve of the con- denser. •...

  • Page 20: Vacuum Creation And Refrigerant Charge

    5.2 - Vacuum creation and refrigerant charge Open the cock of the refrigerant cylinder (11a) until the system reaches a pressure value of about 1 bar. NOTICE: Check the refrigerant type to be used on the NOTICE: The refrigerant must be introduced and data plate of the air conditioner and on the refrigerat- charged on evaporator inlet (5/16 Shrader valve) tak- ing compressor.

  • Page 21: Water Connections

    6 - Water connections 6.2.2 - Condensate drain for the Extended Height Downflow Up and Downflow Down units Place the condensate pipe inside the fan module before making 6.1 - General warnings the drain trap. ENSURE THAT THE TUBING DOES NOT OBSTRUCT THE AIR 6.2.3 - Condensate Pump.
  • Page 22 Installation Instructions: 6.4 - Cooling water connections (W, F and H only) The unit must receive cooling water as follows: Check tubing ends - the out- From an external cooling water source, in open circuit side surface of the tubing (par.

  • Page 23: Electrical Connections

    (at lowest point) See Hydraulic drawings in Enclosure D. If the unit must be installed in the IT System, contact Vertiv Techni- 7 - Electrical connections cal department prior to installation. 7.3 - Fan Module Electrical connections (Extended Height unit only) 7.1 - Electrical connections...

  • Page 24: Power Supply Cable Connection

    Upflow: must be arranged and connected to the additional electrical panel placed near the main electrical panel. Make sure that all electrical cables are correctly run between the • Use the cable size defined according to maximum current ab- two modules: sorbed, the supply voltage, the installation type and the local •...

  • Page 25: Air Condenser Setup

    230C 72C Vertiv MC Condenser, common circuit 2 control signal Note: Connect 70C terminal with Vertiv MC Condenser terminal 700, connect 71C terminal with Vertiv MC Condenser terminal 710, connect 230C terminal with Vertiv MC Condenser terminal 230. (*) LWD INPUT 135-136 is not available in Dual Circuit Digital Scroll Cooling System units PX044-054-062-074-092-068...

  • Page 26: Starting And Stopping

    The yellow LED on the iCOM case will light after turning the unit on, condenser/ Dry cooler (if fitted) is calibrated correctly, and showing the presence of the electric power. that it controls the fan operation. • Check oil level inside compressors, where compressor’s If the LED does not light up: oil level sight glass is available, after 30 min of compres- •...

  • Page 27: Operation

    Fig. i - Refrigerant line components thermostats set at 120°C are installed. • hot water heating (optional): if hot water is available, this flows through the hot water coil, thus heating the air pass- ing over it. The hot water flow is controlled by an on-off (3-way) valve.

  • Page 28: Thermostatic Expansion Valve (Txv) Setting

    10 -Calibrations & Regulation The condensing temperature is preset at 40°C inside the iCOM control. This value can be modified only by the Vertiv Customer (at start-up) Service. The valve running time is set to the value specified in the Control The air conditioner has already been factory tested and calibrated, Manual.

  • Page 29: Maintenance And Spare Parts

    11.2 - Spare parts Only original spare parts made by Vertiv may be used. Using third-party material can invalidate the warranty. When making inquiries always refer to the ”Component List” supplied with the equipment and specify the model number, serial number and, if available, also the part number.

  • Page 30: Ec Fan Replacement

    11.5 - EC fan replacement WARNING! There is a risk of the fans and panel falling down and causing an injury during the replacement operation. Due to the weight of the fans (approx. 35 kg) and the panel (up to 25 kg), two technicians are required to carry out the fan replacement.
  • Page 31 Upflow versions Disconnect the fan electrical cable from the connec- tor. Remove the 2 front screws “a” from the fan support (one screw on each side of the sliding bars) Remove the 2 rear screws “b” of the fan support (one screw on each side of the sliding bars) and slowly put down the fan on the Fan nozzle.

  • Page 32: Maintenance

    Maintenance schedule MAINTENANCE PERIOD EVERY COMPONENT 3 Months 6 Months 1 Year Check for soiling, damage corrosion, and proper fixing. FANS WARNING: do not reach Check bearings noise. into the fan Measure the current and power consumption. while the fan wheel is running.

  • Page 33: Refrigeration Circuit

    MAINTENANCE PERIOD EVERY COMPONENT 3 Months 6 Months 1 Year ELECTRONIC EXPANSION VALVE and SUPERHEATING See appropriate manual. CONTROLLER (if installed) EXTERNAL CONDENSER/ See appropriate manual. Dry cooler (if installed) Make sure there is no loss of water. Deaerate the cooling water circuit using the vent valve near unit hydraulic con- nections.

  • Page 34: Dismantling The Unit

    It is therefore obvious that the taps of the compressor must only be turned after the whole plant has been subjected to a vacuum and partial filling. 11.6.3 - Oil topping-up of an installed circuit If oil leakages occur, the topping-up operation is necessary. (Contact the local Service before intervention).

  • Page 35: Electrode Humidifier

    Enclosure A - Electrode Humidifier A.1 - Electrode humidifier The operation of immersed electrode humidifiers is based on a very simple physical principle. As common drinking water contains a cer- tain quantity of dissolved mineral salts, and is consequently slightly conductive, applying a voltage to metal electrodes immersed in the water creates an electric current that heats the water until producing steam (Joule effect).
  • Page 36 Enclosure A - Electrode Humidifier • Dispose the drain hose into an ordinary drainage network. (the drainage network should have a siphon (see Fig. 1) and must be able to withstand temperatures up to 100°C and able to drain water flow up to 10l/min. •...
  • Page 37 Enclosure A - Electrode Humidifier A.3 - Start-up and operation A.3.1 - Start-up Before using the humidifier, check the following: • Supply and drain connections. • That the cut-off tap is open. • All wiring. • Earthing. • Steam hose connection between steam cylinder and distributor. To start the humidifier simply switch on the air conditioner, which will in turn automatically start and stop the humidifier as required.
  • Page 38 Enclosure A - Electrode Humidifier Warning: always disconnect the appliance before touching the cylinder in the event of leaks, as current may be running through the water. A.4.4 - Replacement and maintenance of other components Fill solenoid valve: after having disconnected the cables and the tubing, remove the solenoid valve and check the condition of the inlet filter;...
  • Page 39 Enclosure B - Technical data table Tab. 1a - Electrical data with basic fan module SCROLL Cooling System DIGITAL SCROLL Cooling System Configura- Power Residual- Current Residual- Current min./max. Cu Model tion supply FLA [A] LRA [A] Circuit Breakers FLA [A] LRA [A] Circuit Breakers Inn cable size Inn = 0.3A (400V)*...
  • Page 40 Enclosure B - Technical data table Tab. 1b - Electrical data with premium fan module SCROLL Cooling System DIGITAL SCROLL Cooling System min./max. Configura- Power Residual- Current Residual- Current Model Cu cable tion supply FLA [A] LRA [A] Circuit Breakers FLA [A] LRA [A] Circuit Breakers size...
  • Page 41 Enclosure B - Technical data table Tab. 2 - EC fan connections EC Fan signal [Vdc]* Downflow Up Downflow Down Downflow Frontal Upflow Model Dehumidi- Dehumidi- Dehumidi- Dehumidi- fication fication fication fication PX041 A/W PX045 A/W PX059 A/W PX047 A/W PX051 A/W PX057 A/W PX044 A/W...
  • Page 42 Enclosure B - Technical data table Tab. 3 - Electrical data (standard components) Component EC Fan (400V / 3Ph / 50Hz) Downflow Up Downflow Down Downflow Frontal Upflow Model PX041 A/W 3.18 2.07 2.03 1.29 2.34 2.55 1.65 PX045 A/W 3.61 2.36 3.06...
  • Page 43 Enclosure B - Technical data table Component COMPRESSOR (400V / 3Ph / 50Hz) Nominal power** Winding resistance OA** [A] FLA [A] LRA [A] [kW] (Ohm) Model Digital Digital Digital Digital Digital Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll PX041 A/W 15.13...
  • Page 44 Enclosure B - Technical data table Component COMPRESSOR (400V / 3Ph / 50Hz) Nominal power** Winding resistance OA** [A] FLA [A] LRA [A] [kW] (Ohm) Model Digital Digital Digital Digital Digital Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll PX041 A/W 15.13...

  • Page 45: Electrical Heating

    Enclosure B - Technical data table Tab. 4 - Electrical data (optional components) ELECTRODE ELECTRICAL HEATING CONDENSATE PUMP HUMIDIFIER COMPONENT Std. Capacity Opt. High Capacity Nominal Nominal Model Nominal Nominal FLA [A] power FLA [A] power FLA [A] power FLA [A] power [kW] [kW]...
  • Page 46 Enclosure B - Technical data table Tab. 5 - Calibrations of electrical components COMPONENT SETTING NOTES CONTACT Range 0-45 barg High Pressure transducer (HP) (see iCOM manual) Output 0-5 V Range 0-17.3 barg Low Pressure transducer (LP) (see iCOM manual) Output 0-5 V STOP 42.0 ±1 barg...
  • Page 47 Enclosure B - Technical data table Tab. 6 - Adjustments and calibrations of valves (see Enclosed D - Refrigeration circuits) Calibration & Component Application Model Drawing Operating PX041 - 045 - 059 F/D/H Siemens SSC 819 PX041-045-059 F/D/H Siemens SSC 619 all PDX water cooled (W/F/H) 0-10V Servomotor for...
  • Page 48 Enclosure B - Technical data table Tab. 7 - R410A refrigerant and oil charge for air cooled models (A-D type) BASE OIL CHARGE (1) Max System Oil to be add- BASE REFRIGERANT BASE REFRIGERANT oil within compressor Refriger- ed over the CHARGE (2) CHARGE (2) (Data in brackets refer to...
  • Page 49 Enclosure B - Technical data table Tab. 8 - Refrigerant and oil charge for water cooled models (W-F-H type) R410A REFRIGERANT CHARGE OIL CHARGE (1) [l] [kg - each circuit] (Data in brackets refer to MODEL Digital Scroll Compressor Cooling System, when the without hot gas reheating with hot gas reheating data differs)

  • Page 50: Installation Drawings

    Enclosure C - Installation drawings Fig. 1 Overall dimensions and Service Area UPFLOW DOWNFLOW UP UPFLOW DOWNFLOW FRONTAL Floor Level Floor Level Tab. 1 - Overall dimensions - Service area (referring to Fig. 1) Unit Options Upflow AVAILABLE PLENUM HEIGHTS: D [mm] Down- Downflow Plenum...
  • Page 51 Enclosure C - Installation drawings Fig. 2 Hole in the floor for Downflow versions Downflow Up Tab. 2 - Hole in the floor for Downflow units, dimensions in mm PX047 PX051 PX041 PX068 PX057 PX044 PX150 Configuration Unit PX045 PX082 PX094 PX054 PX062 PX165 PX059...
  • Page 52 Enclosure D - Refrigerant, water and electrical connections Tab. 1 - Electrical data with basic fan module PX041 PX045 PX059 Model Unit Connection Refrigerant liquid line O.D. O.D. O.D. O.D. inlet 1* Ø18 mm Ø18 mm Ø18 mm Ø18 mm Refrigerant liquid line inlet 2* Refrigerant gas line...
  • Page 53 Enclosure D - Refrigerant, water and electrical connections PX047 PX051 PX057 Model Unit Connection O.D. O.D. O.D. O.D. O.D. Refrigerant liquid Ø18 Ø18 Ø18 Ø18 Ø18 line inlet 1* Refrigerant liquid line inlet 2* O.D. O.D. O.D. O.D. O.D. Refrigerant gas Ø22 Ø22 Ø22...
  • Page 54 Enclosure D - Refrigerant, water and electrical connections PX044 PX054 PX062 Model Unit Connection O.D. O.D. O.D. O.D. O.D. O.D. Refrigerant liquid Ø18 Ø18 Ø18 Ø18 Ø18 Ø18 line inlet 1* O.D. O.D. O.D. O.D. O.D. O.D. Refrigerant liquid Ø18 Ø18 Ø18 Ø18...
  • Page 55 Enclosure D - Refrigerant, water and electrical connections PX074 PX092 PX068 PX082 Model Unit Connection O.D. O.D. O.D. O.D. O.D. O.D. Refrigerant liquid Ø18 Ø18 Ø18 Ø18 Ø18 Ø18 line inlet 1* O.D. O.D. O.D. O.D. O.D. O.D. Refrigerant liquid Ø18 Ø18 Ø18...
  • Page 56 Enclosure D - Refrigerant, water and electrical connections PX094 PX104 PX120 PX150 PX165 Model Unit Connection O.D. O.D. O.D. O.D. O.D. O.D. O.D. Refrigerant liquid Ø18 Ø18 Ø18 Ø18 Ø18 Ø18 Ø18 line inlet 1* O.D. O.D. O.D. O.D. O.D. O.D.
  • Page 57 Enclosure D - Refrigerant, water and electrical connections Fig. 1 - Refrigerant, water and electrical connections PX041-045-059 A-W, top view 1200 IL1 / OWC1 HD1/HF1 OG1 / IWC1 EC aux HD2/HF2 Fig. 2 - Refrigerant, water and electrical connections PX041 F-H-D, top view 1200 108,5 IL1 / OWC1...
  • Page 58 Enclosure D - Refrigerant, water and electrical connections Fig. 3 - Refrigerant, water and electrical connections PX047-051-057-044-054-062-074-092 A-D, top view 1750 HD/HF 108,5 EC aux Fig. 4 - Refrigerant, water and electrical connections PX047-051-057-044-054-062-074-092 W-F-H, top view 1750 HD/HF 108,5 OWC1 EC aux OWC2...
  • Page 59 Enclosure D - Refrigerant, water and electrical connections Fig. 5 - Refrigerant, water and electrical connections PX068-082-094-104-120 A-D, top view 2550 HD/HF EC aux Fig. 6.1 - Refrigerant, water and electrical connections PX068-082-094-104-120 W-F-H, top view 2550 HD/HF OWC1 EC aux OWC2 IWC1 IWC2...
  • Page 60 Enclosure D - Refrigerant, water and electrical connections Fig. 7 - Refrigerant and water connections PX041-120 Downflow, side view FRONT FLOOR Fig. 8 - Refrigerant and water connections PX041-120 Upflow, side view FRONT FLOOR Liebert PDX - UM - 265046 - 01.03.2018 D - 51...
  • Page 61 Enclosure D - Refrigerant, water and electrical connections Fig. 9 - Refrigerant circuit A version -Single circuit -Single SCROLL compressor- Mechanical TXV ONLY WITH REHEATING COIL OPTION SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT POS. DESCRIPTION POS. DESCRIPTION Compressor Thermostatic expansion valve Crankcase heater Shut-off solenoid valve High pressure switch (HP)
  • Page 62 Enclosure D - Refrigerant, water and electrical connections Fig. 10 - Refrigerant circuit A version - Single circuit - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT POS. DESCRIPTION POS. DESCRIPTION Compressor Temperature sensor for EEV Crankcase heater Check valve...
  • Page 63 Enclosure D - Refrigerant, water and electrical connections Fig. 11 - Refrigerant circuit A version - Single circuit - Single DIGITAL SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION DIGITAL SCROLL COMPR. SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT POS. DESCRIPTION POS.
  • Page 64 Enclosure D - Refrigerant, water and electrical connections Fig. 12 - Refrigerant circuit A version - Single circuit - Single DIGITAL SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION DIGITAL SCROLL COMPR. SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT POS. DESCRIPTION POS.
  • Page 65 Enclosure D - Refrigerant, water and electrical connections Fig. 13 - Refrigerant circuit A version - Single circuit - Tandem SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION TANDEM SCROLL COMPR. SCROLL COMPR. SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT POS.
  • Page 66 Enclosure D - Refrigerant, water and electrical connections Fig. 14 - Refrigerant circuit A version - Single circuit - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION TANDEM COMP . 2 COMP . 1 (FOR PX057- 059) (FOR PX047- 051) SUPPLY LIMIT SUPPLY LIMIT...
  • Page 67 Enclosure D - Refrigerant, water and electrical connections Fig. 15 - Refrigerant circuit A version - Dual circuits - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 CIRC. 2 CIRC. 1 SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT CONDENSING UNIT POS.
  • Page 68 Enclosure D - Refrigerant, water and electrical connections Fig. 16 - Refrigerant circuit A version - Dual circuits - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 NOT FOR PX092 NOT FOR PX092 SUPPLY LIMIT SUPPLY LIMIT...
  • Page 69 Enclosure D - Refrigerant, water and electrical connections Fig. 17 - Refrigerant circuit A version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - TXV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 DIGITAL SCROLL SCROLL...
  • Page 70 Enclosure D - Refrigerant, water and electrical connections Fig. 18 - Refrigerant circuit A version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 DIGITAL SCROLL SCROLL...
  • Page 71 Enclosure D - Refrigerant, water and electrical connections Fig. 19 - Refrigerant circuit A version - Dual circuits - Tandem SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 TANDEM TANDEM SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT CONDENSING UNIT POS.
  • Page 72 Enclosure D - Refrigerant, water and electrical connections Fig. 20 - Refrigerant circuit A version - Dual circuits - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 TANDEM TANDEM (FOR PX120) (FOR PX082 (FOR PX120) (FOR PX082 -094-104)
  • Page 73 Enclosure D - Refrigerant, water and electrical connections Fig. 21 - Refrigerant circuit W version - Single circuit - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION OPTION 2- WAY VALVE OPTION 3- WAY VALVE WATER OUTLET WATER INLET POS.
  • Page 74 Enclosure D - Refrigerant, water and electrical connections Fig. 22 - Refrigerant circuit W version - Single circuit - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION OPTION 2- WAY VALVE OPTION 3- WAY VALVE WATER OUTLET WATER INLET POS.
  • Page 75 Enclosure D - Refrigerant, water and electrical connections Fig. 23 - Refrigerant circuit W version - Single circuit - Single DIGITAL SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION DIGITAL SCROLL COMPR. OPTION 2- WAY VALVE OPTION 3- WAY VALVE WATER OUTLET WATER INLET POS.
  • Page 76 Enclosure D - Refrigerant, water and electrical connections Fig. 24 - Refrigerant circuit W version - Single circuit - Single DIGITAL SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION DIGITAL SCROLL COMPR. OPTION 2- WAY VALVE OPTION 3- WAY VALVE WATER OUTLET WATER INLET POS.
  • Page 77 Enclosure D - Refrigerant, water and electrical connections Fig. 25 - Refrigerant circuit W version - Single circuit - Tandem SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION TANDEM SCROLL COMPR. SCROLL COMPR. OPTION 2- WAY VALVE OPTION 3- WAY VALVE WATER OUTLET WATER INLET POS.
  • Page 78 Enclosure D - Refrigerant, water and electrical connections Fig. 26 - Refrigerant circuit W version - Single circuit - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION TANDEM COMP . 1 COMP . 2 (FOR PX057- 059) (FOR PX047- 051) OPTION...
  • Page 79 Enclosure D - Refrigerant, water and electrical connections Fig. 27 - Refrigerant circuit W version - Dual circuits - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 OPTION 2- WAY VALVE OPTION 2- WAY VALVE...
  • Page 80 Enclosure D - Refrigerant, water and electrical connections Fig. 28 - Refrigerant circuit W version - Dual circuits - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 NOT FOR PX092 NOT FOR PX092 OPTION 2- WAY VALVE...
  • Page 81 Enclosure D - Refrigerant, water and electrical connections Fig. 29 - Refrigerant circuit W version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - TXV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 DIGITAL SCROLL SCROLL...
  • Page 82 Enclosure D - Refrigerant, water and electrical connections Fig. 30 - Refrigerant circuit W version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION NOT FOR PX092 NOT FOR PX092 CIRC. 2 CIRC. 1 DIGITAL SCROLL SCROLL...
  • Page 83 Enclosure D - Refrigerant, water and electrical connections Fig. 31 - Refrigerant circuit W version - Dual circuits - Tandem SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 TANDEM TANDEM OPTION OPTION 2- WAY VALVE 2- WAY VALVE OPTION OPTION...
  • Page 84 Enclosure D - Refrigerant, water and electrical connections Fig. 32 - Refrigerant circuit W version - Dual circuits - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 TANDEM TANDEM (FOR PX120) (FOR PX082 (FOR PX082 (FOR PX120) -094-104)
  • Page 85 Enclosure D - Refrigerant, water and electrical connections Fig. 33 - Refrigerant circuit F version - Single circuit - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION COOLING WATER INLET COOLING WATER OUTLET POS. DESCRIPTION POS. DESCRIPTION Compressor Reheating coil (optional) Crankcase heater Evaporator...
  • Page 86 Enclosure D - Refrigerant, water and electrical connections Fig. 34 - Refrigerant circuit F version - Single circuit - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION COOLING WATER INLET COOLING WATER OUTLET POS. DESCRIPTION POS. DESCRIPTION Compressor Reheating coil (optional) Crankcase heater Evaporator...
  • Page 87 Enclosure D - Refrigerant, water and electrical connections Fig. 35 - Refrigerant circuit F version - Single circuit - Single DIGITAL SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION DIGITAL SCROLL COMPR. COOLING WATER INLET COOLING WATER OUTLET POS. DESCRIPTION POS.
  • Page 88 Enclosure D - Refrigerant, water and electrical connections Fig. 36 - Refrigerant circuit F version - Single circuit - Single DIGITAL SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION DIGITAL SCROLL COMPR. COOLING WATER INLET COOLING WATER OUTLET POS. DESCRIPTION POS.
  • Page 89 Enclosure D - Refrigerant, water and electrical connections Fig. 37 - Refrigerant circuit F version - Single circuit - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION TANDEM DIGITAL SCROLL SCROLL COMPR. COMPR. COOLING WATER INLET COOLING WATER OUTLET POS.
  • Page 90 Enclosure D - Refrigerant, water and electrical connections Fig. 38 - Refrigerant circuit F version - Dual circuits - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION CIRC. 1 CIRC. 2 COOLING WATER INLET COOLING WATER OUTLET POS. DESCRIPTION POS.
  • Page 91 Enclosure D - Refrigerant, water and electrical connections Fig. 39 - Refrigerant circuit F version - Dual circuits - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 COOLING WATER INLET COOLING WATER OUTLET POS. DESCRIPTION POS.
  • Page 92 Enclosure D - Refrigerant, water and electrical connections Fig. 40 - Refrigerant circuit F version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - TXV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 DIGITAL SCROLL SCROLL COMPR. COMPR. COOLING WATER INLET COOLING WATER OUTLET POS.
  • Page 93 Enclosure D - Refrigerant, water and electrical connections Fig. 41 - Refrigerant circuit F version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 DIGITAL SCROLL SCROLL COMPR. COMPR. COOLING WATER INLET COOLING WATER OUTLET POS.
  • Page 94 Enclosure D - Refrigerant, water and electrical connections Fig. 42 - Refrigerant circuit F version - Dual circuits - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 TANDEM TANDEM COOLING WATER INLET COOLING WATER OUTLET POS.
  • Page 95 Enclosure D - Refrigerant, water and electrical connections Fig. 43 - Refrigerant circuit D version - Single circuit - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE NOT AYASILABLE FOR MODELS PDX015/021/025/031 SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT...
  • Page 96 Enclosure D - Refrigerant, water and electrical connections Fig. 44 - Refrigerant circuit D version - Single circuit - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE NOT AYASILABLE FOR MODELS PDX015/021/025/031 SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT...
  • Page 97 Enclosure D - Refrigerant, water and electrical connections Fig. 45 - Refrigerant circuit D version - Single circuit - Single DIGITAL SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE NOT AYASILABLE FOR MODELS PDX015/021/025/031 DIGITAL SCROLL...
  • Page 98 Enclosure D - Refrigerant, water and electrical connections Fig. 46 - Refrigerant circuit D version - Single circuit - Single DIGITAL SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE NOT AYASILABLE FOR MODELS PDX015/021/025/031 DIGITAL SCROLL...
  • Page 99 Enclosure D - Refrigerant, water and electrical connections Fig. 47 - Refrigerant circuit D version - Single circuit - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE TANDEM SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT POS.
  • Page 100 Enclosure D - Refrigerant, water and electrical connections Fig. 48 - Refrigerant circuit D version - Dual circuits - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE CIRC. 2 CIRC. 1 SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT CONDENSING UNIT...
  • Page 101 Enclosure D - Refrigerant, water and electrical connections Fig. 49 - Refrigerant circuit D version - Dual circuits - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE CIRC. 1 CIRC. 2 SUPPLY LIMIT SUPPLY LIMIT CONDENSING UNIT CONDENSING UNIT...
  • Page 102 Enclosure D - Refrigerant, water and electrical connections Fig. 50 - Refrigerant circuit D version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - TXV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE CIRC. 1 CIRC. 2 DIGITAL SCROLL SCROLL...
  • Page 103 Enclosure D - Refrigerant, water and electrical connections Fig. 51 - Refrigerant circuit D version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE CIRC. 2 CIRC. 1 SCROLL DIGITAL COMPR.
  • Page 104 Enclosure D - Refrigerant, water and electrical connections Fig. 52 - Refrigerant circuit D version - Dual circuits - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE CIRC. 1 CIRC. 2 TANDEM TANDEM SUPPLY LIMIT...
  • Page 105 Enclosure D - Refrigerant, water and electrical connections Fig. 53 - Refrigerant circuit H version - Single circuit - Single SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE NOT AYASILABLE FOR MODELS PDX015/021/025/031 OPTION 2- WAY VALVE WATER OUTLET...
  • Page 106 Enclosure D - Refrigerant, water and electrical connections Fig. 54 - Refrigerant circuit H version - Single circuit - Single SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE 22 T NOT AYASILABLE FOR MODELS PDX015/021/025/031 OPTION 2- WAY VALVE...
  • Page 107 Enclosure D - Refrigerant, water and electrical connections Fig. 55 - Refrigerant circuit H version - Single circuit - Single DIGITAL SCROLL compressor - TXV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE NOT AYASILABLE FOR MODELS PDX015/021/025/031 DIGITAL SCROLL...
  • Page 108 Enclosure D - Refrigerant, water and electrical connections Fig. 56 - Refrigerant circuit H version - Single circuit - Single DIGITAL SCROLL compressor - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE 22 T NOT AYASILABLE FOR MODELS PDX015/021/025/031 DIGITAL...
  • Page 109 Enclosure D - Refrigerant, water and electrical connections Fig. 57 - Refrigerant circuit H version - Single circuit - Tandem DIGITAL SCROLL compressors - EEV ONLY WITH REHEATING COIL OPTION OPTION KIT 2- WAY CW VALVE TANDEM OPTION 2- WAY VALVE WATER OUTLET WATER INLET OPTION...
  • Page 110 Enclosure D - Refrigerant, water and electrical connections Fig. 58 - Refrigerant circuit H version - Dual circuits - Single SCROLL compressor - TXV OPTION KIT 2- WAY CW VALVE ONLY WITH REHEATING COIL OPTION 22 T CIRC. 2 CIRC. 1 OPTION OPTION 2- WAY VALVE...
  • Page 111 Enclosure D - Refrigerant, water and electrical connections Fig. 59 - Refrigerant circuit H version - Dual circuits - Single SCROLL compressor - EEV OPTION KIT ONLY WITH REHEATING 2- WAY CW VALVE COIL OPTION 22 T CIRC. 2 CIRC. 1 OPTION OPTION 2- WAY VALVE...
  • Page 112 Enclosure D - Refrigerant, water and electrical connections Fig. 60 - Refrigerant circuit H version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - TXV OPTION KIT 2- WAY CW VALVE ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 OPTION 2- WAY VALVE OPTION...
  • Page 113 Enclosure D - Refrigerant, water and electrical connections Fig. 61 - Refrigerant circuit H version - Dual circuits - Single SCROLL+DIGITAL SCROLL compressors - EEV OPTION KIT 2- WAY CW VALVE ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 OPTION 2- WAY VALVE OPTION...
  • Page 114 Enclosure D - Refrigerant, water and electrical connections Fig. 62 - Refrigerant circuit H version - Dual circuits - Tandem DIGITAL SCROLL compressors - EEV OPTION KIT 2- WAY CW VALVE ONLY WITH REHEATING COIL OPTION CIRC. 2 CIRC. 1 TANDEM TANDEM OPTION...
  • Page 115 Enclosure D - Refrigerant, water and electrical connections Fig. 63 - Hydraulic circuit hot water 3 way (position for down flow unit) (position for up flow unit) HOT WATER OUTLET HOT WATER INLET POS. Components Reheating coil On/off 3 - way valve Manual bleed valve Liebert PDX - UM - 265046 - 01.03.2018 D - 106...
  • Page 116 Enclosure D - Refrigerant, water and electrical connections Fig. 64 - Refrigerant circuit for head pressure control valve installation PX041… PX104 (no PX057) (FOR EACH REFRIGERANT CIRCUIT) GAS LINE (From compressor) LIQUID LINE (To liquid receiver) PX057 / PX120 (FOR EACH REFRIGERANT CIRCUIT) GAS LINE (From compressor) LIQUID LINE...

  • Page 117: Accessories

    Enclosure E - Accessories E.1 Kit Legs E.2 Base frame Legs kit can be supplied on request tosupport Liebert PDX when The frame could be regulated with a height from 120mm to 800mm ® installed with a raised floor. The legs are fixed with the unit frame and the unit is fixed on it.
  • Page 118 Enclosure E - Accessories E.5 Fresh air module Fresh air module positions Upflow Downflow PX041…074, PX092 PX041…074, PX092 Upflow Downflow PX068…120 PX068…120 The fresh air kit, optional, has aG3 class filter installed As the fresh air intake is positioned close to the fan suc- on the intake side of the fan and is connected to the PDX tion, it will easily mix with the recirculation air.
  • Page 119 Enclosure E - Accessories E.6 Vertical flow extension hood E.7 Hood with high efficiency air filter An extension hood can be supplied on request and can Optional high efficiency filters, filtration class F6, F7 and be installed on top of the unit. It is available with different F9 in accordance with the CEN EN 779 standard, are height: 500mm;...
  • Page 120 Enclosure E - Accessories E.10 Air Economizer The Air Economizer comprises an extension hood 860 To use the Air Economizer the building has to be equipped mm height with a dampers system installable on top of with suitable air ducts and the dampers system modulat- the Downflow units.
  • Page 121 Enclosure E - Accessories E.12 Fans maintenance kit Fans maintenance kit can be supplied on request to sup- ing a service volume in the raised floor. port tiles on Liebert PDX Downflow Down when installed With a correct installation, the maximum admitted vertical ®...

  • Page 122: Infrared Humidifier

    Enclosure F - Infrared Humidifier F. 1 - Infrared Humidifier The infrared humidifier design consists of quartz lamps mounted above a stainless steel water reservoir. The lamps never come in contact with the water. When humidification of room air is required, infrared rays generate water vapor—without impurities or odor, within seconds. In order to obtain optimum performance from the humidifier it is advisable to read this manual carefully.
  • Page 123 Enclosure F - Infrared Humidifier F. 3 - Start-up and operation F. 3.1 - Start-up Before using the humidifier, check the following: • Supply and drain connections. • That the cut-off tap is open. • All wiring. • Earthing. To start the humidifier simply switch on the air conditioner, which will, in turn, automatically start and stop the humidifier as required. The (adjustable) parameters which determine humidifier operation have already been factory-preset (see iCOM manual).
  • Page 124 Enclosure F - Infrared Humidifier F. 4.2 - Changing Humidifier Lamps CAUTION: Touching quartz lamps with bare hands will severely shorten bulb life. Skin oils create hot spots on lamp surface. Wear clean cotton gloves when handling lamps. Remove the humidifier pan (see F.4.1 - Cleaning Humidifier Pan and Float Switch, Steps 1 to 11). Disconnect power from the unit.

  • Page 125: Ultrasonic Humidifier

    Enclosure G - Ultrasonic Humidifier G. 1 - Ultrasonic Humidifier Ultrasonic Humidifier operates on the principle of ultrasonic nebulization. A 48 VAC voltage is rectified on an oscillator circuit and trans- formed into a high frequency signal of 1.65 MHz. This signal is transmitted to a transducer installed in the water which then transforms the signal into high frequency automatic vibrations.
  • Page 126 Enclosure G - Ultrasonic Humidifier Fig. 2 - Ultrasonic humidifier module in the raised floor, frontal and lateral views Supply Water. • Supply fully demineralized water with conductivity < 5 μS/cm. If demineralized water is not available, provide demineralizer (not supplied);...
  • Page 127 Enclosure G - Ultrasonic Humidifier G. 3 - Start-up and operation G. 3.1 - Start-up Before using the humidifier, check the following: • Supply and drain connections. • That the cut-off tap is open. • All wiring. • Earthing. To start the humidifier simply switch on the air conditioner, which will, in turn, automatically start and stop the humidifier as required. The (adjustable) parameters which determine humidifier operation have already been factorypreset (see iCOM manual).
  • Page 129 Fabrikant - Κατασκεναστηζ - Producent 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 130 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 PDX 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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