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Vertiv Liebert PEX+ Series User Manual

Vertiv Liebert PEX+ Series User Manual

Chilled water precision air conditioning
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Liebert® PEX+Chilled Water Series
Precision Air Conditioning
User Manual

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Summary of Contents for Vertiv Liebert PEX+ Series

  • Page 1 Liebert® PEX+Chilled Water Series Precision Air Conditioning User Manual...
  • Page 2 Homepage: www.vertiv.com E-mail: support@Vertiv.com Customer service hotline: 4008876510 Asia Pacific Homepage: www.vertiv.com. E-mail: overseas.support@Vertiv.com Australia Customer service hotline: 1300367686 New-Zealand Customer service hotline: 0800100877 For Technical Support, users may contact the nearest Vertiv Co. local sales office or service centre.
  • Page 3 Purpose of the Document This document applies to the series of precision air conditioners and cooling solutions which maintain optimal environmental control of technological ecosystems at minimal operating costs. This document gives an overview of the specifications, installation, commissioning, and maintenance procedures with troubleshooting from the user perspective.
  • Page 4 Safety Precautions and Measures The important safety precautions and measures that should be followed during the installation and maintenance are described in the following sections. Read the manual prior to installation and operation of the unit. Only qualified personnel should move, install, or service this equipment.
  • Page 5 Therefore, care should be taken to ensure that the unit is not located directly above any equipment that could sustain damage due to water and excessive moisture. Use of a leak detection system for the unit and system supply lines are recommended by Vertiv Co.

  • Page 6: Table Of Contents

    2.1. Pre-installation ..........................................13 2.1.1. Transportation & Movement ................................13 2.1.2. Unpacking ......................................... 14 2.1.3. Inspection ........................................... 16 2.2. Installation Preparation (Site Preparation) .............................16 2.2.1. Equipment Room Requirements ..............................16 2.2.2. Installation Space Requirements ..............................17 Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 7 3.2. Cabling of Indoor Unit ......................................41 3.3. Electrical Installation Checklist ................................. 47 Chapter 4: iCOM Controller Operation .................................48 4.1. LCD Screen ............................................49 4.2. Button and Indicator Panel ...................................49 4.3. Start-Up Interface ........................................52 Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 8 5.2.1. Installing communication card ..............................72 5.2.2. Connection ........................................72 5.2.3. Assigning the Card’s IP Address ..............................73 5.2.4. Connect an Ethernet Cable ................................75 5.2.5. Connect a RS-485 Serial Cable ..............................75 5.3. Configure the Card ........................................ 76 Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 9 7.9. Electric Heater Maintenance Guide ..............................93 7.10. Water Flow Control Valve ....................................94 Chapter 8: Diagnosis and Troubleshooting .............................95 8.1. Fault Diagnosis and Treatment of Fans..............................95 8.2. Fault Diagnosis and Treatment of Infrared Humidifier .......................96 Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 10 8.2.1. Infrared Humidifier Troubleshooting ............................96 8.3. Refrigeration System - Fault Diagnosis and Treatment ....................96 8.4. Heating System - Fault Diagnosis and Treatment ......................... 97 Appendix I: Content of Harmful Substances in Products ......................98 Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 11: Chapter 1: Product Overview

    The PEX+CW PAC unit comes with the features such as high reliability, high sensible heat ratio, and large airflow. It is an excellent system that adheres to the standards of Precision Air Cooling in terms of energy-efficiency, space requirements, and reliability. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 12: Model Description

    Liebert® PEX+. The appearance of ‘Liebert PEX+ Chilled Water Series Precision Air Conditioner’ (“PEX+ CW” for short hereafter) is shown in Figure 1-1. Figure 1-1 Liebert PEX+ Series Model Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 13: Model Nomenclature

    Standard Static Large Display Digit 13 Re-heating High ESP 100 Pa None High ESP 200 Pa Electrical Heating Std. 1 Stage Other High ESP Electrical heating Opt. 2 Stage SFA Included Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 14: Components Of Pex+Cw Model

    Liebert PEX+CW components include indoor unit, outdoor unit, and remote monitoring software. Figure 1-2 shows main components of PEX+ model. Description Description Filter Cooling Coil Control Board Heater Infrared Humidifier Figure 1-2 Main Components of PEX+CW Model Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 15: Cabinet

    The infrared humidifier in the Liebert PEX+CW series provides quicker and more responsive operation which is quite important for mission-critical applications. The humidifiers reduce the dependency of water quality and simultaneously achieve full capacity in quick time using almost any water quality. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 16: Electrical Heater

    These electrical heaters features lower running temperatures, less susceptible to overheating and long lasting due to less wear thereby ensuring operational safety and lower maintenance and smooth operation Figure 1-5 Electrical Heater Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 17: Water Flow Regulating Valve

    The unit uses a standard filter that complies with US ASHRAE52-76 and Eurovent 4/5 standards, and the dust resistance value is 90% (EU4 standard). It is easy to replace. To ensure efficient operation, the dust filter must be checked once a month, and be replaced as required. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 18: Water Leak Detecting System

    Liebert PEX+CW PAC adopts Small display with 128 × 64 dot matrix, blue backlight LCD screen as a standard to display the present temperature, humidity, temperature, and humidity setting values, unit output percentage graph (fan, valve, heating, dehumidification, and humidification) and alarm information. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 19: Optional Components

    All plenums have grills at the outlet to streamline the airflow movement across the room. The plenum grills can be manually regulated by changing the direction of airflow as per the site requirement. In the case of customized design requirement of the Plenum, contact Vertiv local representative. • Belt Leak Detector Belt leak detector can provide a signal to the controller to trigger an alarm of air conditioner unit.
  • Page 20 • IS - Unity Card IS-UNITY Card can provide two kinds communication protocol: SNMP, Modbus and BACnet that supports standards and norms of the industrial communication protocol. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 21: Storage & Operating Environment Requirements

    Operation voltage range 380 V (-10%) to 415 V (+6%), 3 Ph + N~50/60 Hz Please contact Vertiv local representative when operating in the following conditions. The voltage of the air conditioning unit is beyond the range of the operating voltage.

  • Page 22: Noise Level Limits

    Under the airflow free return circumstance, the sound pressure level is less than 70 dB for all models. Figure 1-9 Figure 1-10 provide the noise level measuring points of the unit Figure 1-9 Noise Level Measurement (Top View) Figure 1-10 Noise Level Measurement (Side View) Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 23: Chapter 2: Installation

    Figure 2-1 Moving an Equipment Using a Forklift Truck While moving the indoor unit, keep the obliquity within the range of 75° to 105°, as shown in Figure 2-2. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 24: Unpacking

    Honey Comb Paper Board. For better understanding see Figure 2-3. No. Description Description Top Cover Honey Comb Paper Board Remove Top Cover Remove sealing plastic film and Honey Comb Paper Board Figure 2-3 Removal of Honey Comb Paper Board Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 25 The unit is fixed onto the base pallet with M8×70 screw, as shown in Figure 2-6. Use a 17 mm open-end spanner, ratchet spanner or sleeve to remove the fixing bolts. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 26: Inspection

    2.1.3. Inspection Check that the fittings are complete and the components are intact against the packing list. If any part is missing or damage, please report immediately to the local offices of the carrier and Vertiv. 2.2. Installation Preparation (Site Preparation) Liebert®...

  • Page 27: Installation Space Requirements

    • Vertiv recommends that the site preparation is defined as per the requirements. However, if these requirements are not met, Vertiv suggests that rectifications to be made on the site in order to comply with the specified requirements and conditions.

  • Page 28: Maintenance Space Requirement

    When installing the unit, a minimum maintenance space of 900 mm must be reserved in-front of the air conditioning unit. The requirement for maintenance space is shown in Figure 2-7. Figure 2-7 Maintenance Space of Unit Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 29: Installation Tools

    Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 30: System Arrangement During Installation

    Ensure that the tools used in the installation, operation, and maintenance processes are well insulated. 2.2.5. System Arrangement during Installation Figure 2-8 shows the piping connection of indoor and outdoor units of the chilled water series PAC. Figure 2-8 System Arrangement Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 31: Mechanical Installation

    • : Field piping (by technical personnel) • Components (marked with *) are not supplied by Vertiv Co. but are recommended for proper circuit operation and maintenance. • After the installation, exhaust the PAC unit before filling water to ensure the efficiency of the coil.
  • Page 32 2730 × 995 × 1975 107.5”×39.2”×77.7” P3170 2730 × 995 × 1975 107.5”×39.2”×77.7” P3180 2730 × 995 × 1975 107.5”×39.2”×77.7” P3190 2730 × 995 × 1975 107.5”×39.2”×77.7” P3200 2730 × 995 × 1975 107.5”×39.2”×77.7” Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 33: Position And Dimension Of Air Outlet On Top Cover

    Figure 2-11 The Position of Cut-out Upflow Unit Table 2-3 Dimensions of Air Outlet on Top Cover of Upflow Unit(inch/mm) Types of Model P1030-P1060 P2070-P2100 1600 P2110-P2140 1750 P3150 2425 P3160-P3200 2650 Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 34: Base Pallet Cut-Out Location Dimension

    Sym. Description Sym. Description Power cable entry Drain pipe hole Water inlet for humidifier CI/CO Chilled water inlet and outlet Figure 2-12 The Position of Air Outlet on Top Cover Upflow Unit Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 35: Side Panel Knock-Out Location

    Ensure only one service is used per opening. Description Description 2-Ø25 Knock-out hole 4-Ø110 Knock-out hole 2-Ø35 Knock-out hole 4-Ø44 Knock-out hole Figure 2-13 Knock-out Holes on Side Panel of the Upflow Unit (unit: mm) Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 36 Figure 2-14 Knock-out Holes on Side Panel of the Downflow Unit (unit: mm) The unit has knock-outs on the panels, ensure to mount sleeve to the cable holes to avoid cutting of the cables. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 37: Plenum Dimension (For Upflow)

    Table 2-6 respectively. Figure 2-15 Plenum Dimensions of P1030 and P1060 Upflow Unit Figure 2-16 Plenum Dimensions of P2070 toP2140 Upflow Unit Figure 2-17 Plenum Dimensions of P3160 to P3200 Upflow Unit Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 38: Indoor Installation

    400 (600, optional) P3160 - P3200 2730 400 (600, optional) If the plenum height requirement is more than 600 mm then consult Vertiv local representative for more details on non-standard production. 2.4.4. Indoor Installation • Mounting Floor Stand The mounting floor stand is to be prepared by the installation team according to the dimensions, weight, and...
  • Page 39 Bottom rubber cushion, 6PCS Figure 2-19 Mounting Floor Stand of Two Bay Series Description Description 8-Ø14 hole Bottom rubber cushion Bottom rubber cushion, 4PCS Figure 2-20 Mounting Floor Stand of Three Bay Series Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 40 3. Ensure that the top surface of floor stand is at uniform level. While designing and installing the downflow unit which requires lowering of EC fan, installation team must consider the proper gap distance and the base strength of the floor stand. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 41: Installation Of Indoor Unit

    When connecting the drain pipe, ensure that the U-bend is installed vertically and the ‘U’ shape is not distorted, so that the condensate can be drained immediately and effectively. Because the Infrared humidifier contains hot flowing water, the water pipe must be resistant to heat higher than 90 °C. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 42: Water Inlet Pipe Humidifier Connection

    • Where the pressure of the main pipe is lower than 100 kPa, there should be a water collecting tank and a water pump system. • Some unit installation may required components from local end. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 43 Figure 2-23 for better understanding. Description Description Water inlet pipe (OD:6.35 mm) Water outlet joint Figure 2-23 Water Inlet Pipe of Infrared Humidifier for Downflow Units Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 44: Chilled Water Inlet And Outlet Piping Connection

    Liebert® PEX+ CW units. Description Description Water supply pipe Water return pipe Figure 2-24 Connection of Chilled Water Supply and Return Pipes (upflow units) Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 45 Table 2-8 Male Screw of Chilled Water In and Out Pipes Model Male Screw of Chilled Water In & Out Pipes (inch) P1030~P1050 R1 1/4” P1060~P2080 R1 1/2” P2090~P2140 P3150~P3200 R2 1/2” Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 46: Lowering The Fan

    2-28, total four PCS) for fan lowering. 4. Hold the winch handle firmly, and then turn the handle counterclockwise to lower the fan. The status after the fan has been lowered is shown in Figure 2-29. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 47 Description Bolt Figure 2-28 Position of Fixing Bolt 5. Install the fixing bolts, as shown in Figure 2-28 and hold the arrangement tight during operation with total four PCS of bolts. Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 48 In case of two bays and three bays units, electrical control boxes blocking the fan and infrared humidifier must be removed from the left side before lowering the fan. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 49: Removing Fastener And Vibration Absorber

    Do not touch the lamps with the bare hands. Description No. Description Plug terminal to water level switch HWA plug terminal Figure 2-30 High Water Level Detection Float Switch Lever and Terminal HWA Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 50: Installation Inspection

    The airflow distribution system has been installed in each room (e.g. raised floor/grill, duct, etc.) The upflow unit must have plenum or air duct connection, and after installation the fan and heater shall not be accessible After confirming the above checklist, follow the electrical installation. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 51: Chapter 3: Electrical Installation

    • Before the wiring, use a voltmeter to measure the power supply voltage and ensure that the power supply is switched off. • The applicable grid for this air conditioner: TN, TT star connection power system; consult Vertiv local representative for other connections details.
  • Page 52 Electrical Installation Description Cable clamp Figure 3-1 Location of Electrical Control Box (Upflow unit) Description Cable clamp Figure 3-2 Location of Electrical Control Box (Downflow unit) Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 53 Figure 3-3. For cable specification and the rated Full Load Ampere (FLA) in the Table 3-1. Figure 3-4 Enlarge View of Power Connector Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 54 • The FLA of the standard unit is the same as the unit fitted with 1-stage heater (no humidifier). • MCB and cable sizes are selected as per the local electrical standards. Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 55 3-5, 37# and 38# terminals can connect to remote shutdown switch, which has been shorted in the factory and the shorting cable should be removed if the terminals are to be connected to the remote shutdown switch. Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 56 Building Management System (BMS) or dials the paging system automatically. The power supply of the external general alarm system is user-prepared. For the detailed definition of other terminals, refer to Appendix 1 Circuit Diagram. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 57: Electrical Installation Checklist

    All the cables connections are fastened, with no loose screws Control transformer setting matches the incoming power. Do not power On the unit until the Installation team has checked and confirmed all the electrical installation parameters of the unit. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 58: Chapter 4: Icom Controller Operation

    The microprocessor is capable of generating following audible and visual alarms. 1. High temperature alarm 2. Low temperature alarm 3. High humidity alarm 4. Low humidity alarm 5. Loss of airflow alarm 6. Some self-defined alarms Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 59: Lcd Screen

    Help button. Description Description Alarm silence button Down button Alarm indicator Right button ON/OFF button Enter button Operation indicator Up button ESC button Left button Help button Figure 4-1 Button and Indicator Panel Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 60 • If the buzzer frequency is not 0%, press the down button to decrease the buzzing frequency when the system is in the test state. Meanwhile the buzzer will sound at the set frequency. This function is used to test whether the buzzer is normal. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 61 You do not need to start it manually. • When the system is in the test state, the setpoints will not be written into the iCOM controller. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 62: Start-Up Interface

    If there is no button operation for 255sec on other menu display screen, the LCD screen returns to the main interface. Description Description Setpoint Present value Figure 4-3 Graphical Mode of Main Interface Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 63: User Menus

    Menus are displayed in six pages, each displaying one or two submenus. Press the Enter button to highlight the submenu, the Up or Down button to browse the submenus, and the Enter button to enter the selected one. Figure 4-5 User Menus Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 64: Password

    5 °C to 40 °C BMS Backup Fan Setpoint U117 BACK SPD 100% 0% to 100% BMS Backup Fan Speed U119 RCOMP SP 23 °C 5 °C to 40 °C Return Compensation Setpoint Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 65: Event Log

    In the graphs, the current temperature or humidity (or dew point) is the origin, the time is the horizontal axis, and the temperature or humidity (or dew point) is the vertical axis, as shown in the Figure 4-7. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 66: Set Alarms

    User can select the ‘SET ALARMS’ submenu to browse and set the parameters through the USER MENUS. The parameters are described in Table 4-6. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 67 1.0 - 99.0 °C Low Remote Temperature 07 U231 HIREM 08 32.3 °C 1.0 - 99.0 °C High Remote Temperature 08 U231 LOREM 08 12.8 °C 1.0 - 99.0 °C Low Remote Temperature 08 Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 68: Sensor Data

    4.5.7. Display Setup The DISPLAY SETUP menu is used to set the LCD display attributes. Password is not required for changing the setpoints. The parameters are described in the Table 4-7. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 69 0 = mm/dd/yyyy 0 (mm/dd/ U412 DATE 1 = dd.mm.yyyy Date display format yyyy) 2 = yyyy-mm-dd U415 SHOW SUP 1 (Yes) 0 = No, 1 = Yes Show Supply Temp at Unit Off Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 70: Total Run Hrs

    DEHUM U512 32000 0 - 32001 Run Hours Threshold Dehum LIMIT U517 0 - 999999 h Total Run Hours Unit UNIT ON Timers resetting is not needed unless the components are replaced. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 71: Sleep Mode

    U611 DEADBAND 2.3 K 2 to 15 K Deadband for Timer Mode 4.6. Service Info The SERVICE INFO menu provides the contact information of customer service personnel. This information is read only. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 72: Active Alarms

    SLEEP MODE Sleep mode STANDBY MODE Standby mode POWER ON Power on POWER OFF Power off Unit n disconnected (n = 1 ~ 32) Unit n disconnected (n = 1 ~ 32) Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 73 Current Static Pressure is above the threshold. CW FLUSH STARTED Chilled Water Coil Flush has started. CW FLUSH FINISHED Chilled Water Coil Flush has finished. STATPRES OUT OF RANGE Static Pressure Sensor reading is out of defined range. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 74 The Unit was shut down by BMS. Manual Mode has stopped, the unit operates in auto- MANUAL MODE OFF mode(which can be Unit On or Unit Off, depending on the state before Manual Mode was started). Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 75: Multi-Units And Teamwork Modes

    Figure 4-9. Control Board Connection with Small Display Screen Control Board Connection with Large Display Screen Figure 4-8 Networking of the Two Units Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 76: Teamwork Modes

    All cooling units work independently, responding to their own sensors. Standby function and unit rotation are possible, but cascading is not possible (refer Section 4.10.3 Standby and Cascade). Auto set will not adjust the proportional band in this mode. Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 77 10% system call for cooling (60% - 50% = 10%) is handled by Unit 2. Unit 2 responds by operating at 20% cooling capacity (10% ÷ 50% = 20%). Figure 4-10 System Proportional Band Vertiv | Liebert PEX+Chilled Water | User Manual...
  • Page 78 Teamwork Mode 3. The units below are assuming that the fan power consumed at each unit is 8.1 kW when operating at 100%. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 79: Standby - Rotation

    1-2 to 2-3 in a 4 units configuration; with two standby units, if rotation parameter is set to ‘2’ then rotation is from 1-2 to 3-4 in the same configuration. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 80: Standby And Cascade

    The master unit defines its proportional band according to the number of available units. When a standby unit receives a request for full heating or cooling from the master unit, it will respond to the request after its control delay. Vertiv | Liebert PEX+Chilled Water | User Manual...

  • Page 81: Chapter 5: Application Of Intelli Slot

    RJ-45-Ethernet:- HTTP; Modbus TCP; BACnet IP; Micro- USB AB (Future release) SNMPv1,v2e,v3; Vertiv protocol Liebert sensor network (Future release) BACnet; MSTP; Modbus RTU YDN23 Reset button (Reboot or reset to factory defaults) Figure 5-1 IS-UNITY-DP Card Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 82: Installing Host Communication Card

    The electrical schematic figure of the host communication configuration is shown in Figure 4-3. P61, P65 and P66 cables are connected in the factory. Therefore, only the communication card is to be connected the monitoring center. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 83: Assigning The Card's Ip Address

    Before commissioning user must access the SERVICE Menus’ of the iCOM control board to set S824 MON ADD as ‘3’ S835 MON PORT as Vertiv and S843 BL CTRL as S+R in the “Network Setup.” 5.2.3. Assigning the Card’s IP Address DHCP •...
  • Page 84 IP address for the same device. Figure 5-4 IS-UNITY-DP Card Connection Port Description Description Unity Tab Last DHCP Support > Active networking Figure 5-5 Example of IS-UNITY-DP Card Web Page Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 85: Connect An Ethernet Cable

    Liebert IntelliSlot Unity card’s connector. If the pinout is same as that of Liebert IntelliSlot Unity card connector’s pinout, then proceed to Step Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 86: Configure The Card

    3. Click on Save to confirm the changes or click on Cancel to discard them. The changes will take effect after the card is restarted, refer Figure 5-7 for better understanding. Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 87 • Only one version of Modbus can be selected, either Modbus TCP or Modbus RTU. • Only one of the protocols can use the 485 port; choosing two 485 protocols will cause conflicts. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 88: Enable Protocols

    4. Click Save to confirm the changes or click on Cancel to discard them. 5. Configure the protocols selected. 6. Restart the card. • Select Unity Tab > Support. • Enable the commands. • Click on Restart. Figure 5-8 Enabling Protocol, Enable Commands Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 89: Enable Modbus Protocol

    1. Select the Unity Tab > Protocols > Modbus RTU. 2. Click on Edit and enter a user name and password if required. 3. Set the Node ID and the Baud Rate. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 90: Enable Bacnet Protocol

    9. Click Save to confirm the changes or click on Cancel to discard them. 10. Configure the BACnet interface chosen; refer to Configure BACnet IP Protocol or Configure BACnet MSTP Protocol. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 91: Configure Bacnet Ip Protocol

    • Choose whether to enable Register as Foreign Device. • Enter the IP address of the BBMD (BACnet Broadcast Management Device). • Enter a time in seconds for Foreign Device Time-to-Live. Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 92 5. Click Save to confirm the changes or click on Cancel to discard them. 6. Restart the card to activate the changes. • Select the Unity Tab > Support. • Enable the commands. • Click on Restart Figure 5-10 BACnet IP settings Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 93: Configure Bacnet Mstp Setting

    7. Click Save to confirm the changes or click on Cancel to discard them. 8. Restart the card to activate the changes. • Select Unity Tab > Support. • Enable the commands. • Click on Restart Figure 5-11 BACnet MSTP Settings Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 94: Enable Snmp

    7. Click Save to confirm the changes or click on Cancel to discard them. 8. Restart the card to activate the changes. • Select the Unity Tab > Support • Enable the commands • Click on Restart Figure 5-12 SNMP Settings Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 95: Chapter 6: System Start-Up Commissioning

    3. The cleaning and emptying of the chilled water system have been done (air vent valve is located at the top of the heat exchanger coil). 4. The chilled water system has been confirmed ready for operation by the Vertiv professionals. 5. The water supply/drainage piping of the humidification system has been reliably connected according to the material requirements and has been checked for any sign of leakage.

  • Page 96: Inspection After Commissioning

    1. Check that all output functions are working well. 2. Check that all temperature and humidity settings have been set correctly according to customer requirement. 3. Ensure that all the other setting functions are correct. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 97: Chapter 7: System Operation And Maintenance

    Electrical heating system Check the erosion situation of the components Check clogging of the drain pipes Infrared humidifier Check the lamps of the infrared humidifier Check the mineral sediments on the water pan Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 98: Routine Maintenance Inspection Items (Semi-Annual)

    3. Clean the electric and control elements of dust with brush or dry compressed air. 4. Check the closing of contactors for arcs or signs of burning. Replace the contactor if necessary. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 99: Appearance Inspection And Maintenance Of Controller Components

    10. Check the water detection sensor. Connect the water detection sensor probes and confirm the alarm through the controller. The sensor should be placed in low-lying areas near the unit. Set the humidity control mode to ‘relative humidity control during calibration process. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 100: Filter Maintenance Guide

    The filter clogging switch and pressure difference switch are located as shown in Figure 7-1 Figure 7-2. Description Description Airflow loss switch Filter clogging switch Figure 7-1 Filter Clogging Switch and Alrflow Loss Switch (Upflow Unit) Vertiv | Liebert PEX+ Chilled Water | User Manual...
  • Page 101 2. Keep the fan running and rotate the rotary switch of the filter clogging switch counter-clockwise until the filter alarm is triggered. 3. Rotate the rotary switch clockwise for two and half rounds or rotate it to the point where the filter should be replaced. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 102: Fan

    • If you are unsure about the setting point, consult with Vertiv before using a filter of a different model to replace the old one.

  • Page 103: Electric Heater Maintenance Guide

    Next, check the automatic reset switches or the electric heater pipe for damage or faulty condition. Description Description Manual reset temp switch Auto reset temp switch Auto reset temp switch Figure 7-3 PTC Electrical Heating Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 104: Water Flow Control Valve

    Figure 7-4 Description Description Actuator Connector Regulator body Regulator body Actuator Figure 7-4 Water Flow Control Valve Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 105: Chapter 8: Diagnosis And Troubleshooting

    For the diagnosis and treatment of complex fault please contact Vertiv local representative. Prior to operation and maintenance, the lethal voltage may be present in the equipment which can be fatal. All notes, warnings, and cautions marked on the equipment as well as the ones mentioned in the manual must be considered, otherwise, it may lead to injury and fatality.

  • Page 106: Fault Diagnosis And Treatment Of Infrared Humidifier

    When the heating contactor is closed, check if the L1, L2 and L3 electrical heater Contactor closed, voltages of contactor are normal no heating effect Turn-off the power supply and check the condition of the electrical Electrical heater burnout heater Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 107: Heating System - Fault Diagnosis And Treatment

    Heating auxiliary relay fault contactor does not is correct pull Heating system safety device is Check if manual reset switch is turned off and check the disconnected automatic reset for damage. Vertiv | Liebert PEX+ Chilled Water | User Manual...

  • Page 108: Appendix I: Content Of Harmful Substances In Products

    ×: Means the content of the hazardous substances in at least one of the average quality materials of the part is outside the limits specified in SJ/T11363-2006 Vertiv has been committed to the design and manufacture of environmentally friendly products, we will reduce and eliminate toxic and hazardous substances in products through ongoing research. The following application...
  • Page 109 © 2020 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered trademarks of Vertiv Group Corp. 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 here, Vertiv Group Corp.

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