Emerson Liebert PEX Series User Manual
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Emerson Liebert PEX Series User Manual

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Summary of Contents for Emerson Liebert PEX Series

  • Page 1 User Manual...

  • Page 2: Table Of Contents

    Contents Chapter 1 Overview ................................1 1.1 Model Description ..............................1 1.2 Product Introduction.............................. 2 1.3 Product Appearance ............................. 2 1.4 Main Components..............................3 1.4.1 Indoor Unit ..............................3 1.4.2 Outdoor Unit .............................. 4 1.4.3 iCOM Controller............................4 1.4.4 Remote Monitoring Software ........................4 1.5 Environmental Requirements..........................
  • Page 3 3.2.4 Connecting Solenoid Valve Of Pipe Extension Kit (Options, For Site Installation)........38 3.3 Wiring Of Outdoor Unit (For Air-Cooled Series) ....................38 3.3.1 Connecting Control Signal Cables Of Outdoor Unit................. 38 3.3.2 Connecting Power Cables Of Outdoor Unit ..................... 39 3.4 Installation Inspection ............................
  • Page 4 5.8.1 PASSWORD LEVEL ..........................65 5.8.2 FACTORY SETUP ..........................65 5.9 MBV Settings ..............................69 5.10 EVENT NAME AND DEFINITION........................70 Chapter 6 Application Of INTELLISLOT..........................74 6.1 Introduction Of Host Communication Cards......................74 6.2 Installation Of Host Communication Cards ......................74 6.3 Commission Of Host Communication Component....................

  • Page 6: Chapter 1 Overview

    Chapter 1 Overview Chapter 1 Overview The Liebert.PEX series air conditioner is professional equipment, which should be placed away from the public. This chapter introduces the model description, product introduction, features, main components, requirements on transportation and storage environment of Liebert.PEX series air conditioner. 1.1 Model Description The model description of the Liebert.PEX series air conditioner is shown in Figure 1-1.

  • Page 7: Product Introduction

    -84.2°F. Please consult Emerson Network Power Co., Ltd. (Emerson for short) if the lower temperature is required.

  • Page 8: Main Components

    Chapter 1 Overview 1.4 Main Components The main components of Liebert.PEX air conditioner include indoor unit, outdoor unit and iCOM controller. 1.4.1 Indoor Unit The indoor unit of the Liebert.PEX air conditioner includes compressor, evaporator, thermal expansion valve, infrared humidifier, fan, electric heater, sight glass and filter drier. Besides these components, the water-cooled series indoor unit also includes BPHE and electric valve.

  • Page 9: Outdoor Unit

    Chapter 1 Overview 1.4.2 Outdoor Unit The outdoor unit is applicable to the Liebert.PEX air-cooled series air conditioner. For details, refer to Liebert.PEX Condenser User Manual. 1.4.3 iCOM Controller The iCOM controller of the Liebert.PEX series air conditioner uses the LCD screen with blue backlight and 128 × 64 pixels, or selects the large screen with 320 ×...

  • Page 10: Chapter 2 Mechanical Installation

    Chapter 2 Mechanical Installation Chapter 2 Mechanical Installation This chapter introduces the mechanical installation of the Liebert.PEX series air conditioner, including the transportation, movement, unpacking, inspection, installation notes, system installation arrangement, installing indoor unit, installing outdoor unit, piping for unit, lowering fan, removing fixtures and installation inspection. 2.1 Movement, Unpacking And Inspection 2.1.1 Transportation And Movement Railroad transportation and shipping are the recommended means of transportation.
  • Page 11 Chapter 2 Mechanical Installation 1. Remove the side panels and top cover Liebert.PEX series air conditioner uses the international packaging. You can use a hammer or straight screwdriver to straighten the connection hook that connects the side panels to the top cover, as shown in Figure 2-3. Figure 2-3 Straightening the hook At first, straighten all the hooks that fix side panel I, and remove side panel I.

  • Page 12: Inspection

    Chapter 2 Mechanical Installation 2.1.3 Inspection After receiving the product, you should unpack it, and then check against the packing list that the fittings are complete and that the components are intact. If any parts are found missing, or damaged, please report to the carrier immediately.
  • Page 13 Chapter 2 Mechanical Installation Balancing valve or isolation valve* Filter* Isolation valve* Isolation valve* Drain valve* Hose port* Hose port* Welding port of chilled water in/out port Welding port of chilled water in/out port 3-way Cooling water or glycol liquid ball valve iCOM control Chilled...
  • Page 14 Chapter 2 Mechanical Installation Balancing valve or isolation valve* Filter* Isolation valve* Isolation valve* Drain valve* Hose port* Hose port* Welding port of chilled water in/out port Welding port of chilled water in/out port 3-way ball valve iCOM control Chilled Chilled water coil water coil...

  • Page 15: System Installation Illustration

    Chapter 2 Mechanical Installation Note 1. The contents in the dotted line boxes are the water-cooled unit and air-cooled unit condenser schematic diagram that divided by the cooling mode of the refrigerant system. Select the corresponding pipe connection according to the actual type in use, the dashed lines are for pipe connection at site, * components can be selected according to the actual requirements.

  • Page 16: Mechanical Parameters

    Chapter 2 Mechanical Installation Indoor unit Sealed Slope discharge Raised floor Humidifier water in supply Condensate drain Condenser water out Condensed water out Slope liquid Heat insulation floor Floor Outdoor unit Figure 2-9 Compressor installed higher than condenser Figure 2-10 shows the arrangement of the cooling water system, which requires the water hotter than 4°C. Use heaters if the water source in site cannot meet this requirement.
  • Page 17 Chapter 2 Mechanical Installation One-bay upflow One-bay downflow Two-bay upflow Two-bay downflow Three-bay upflow Three-bay downflow Three-bay downflow Before installing the filter Figure 2-11 Mechanical parameters of the indoor FC fan unit (unit: mm) Liebert.PEX2 Series Air Conditioner User Manual...
  • Page 18 Chapter 2 Mechanical Installation Two-bay upflow Two-bay upflow Three-bay upflow Figure 2-12 Mechanical parameters of the indoor EC fan upflow unit (unit: mm) Note The indoor unit mechanical parameters of EC fan downflow unit are the same as those of FC fan unit (except for P3100 and P2070 downflow dual cooling units, see Figure 2-13 for its mechanical parameters).
  • Page 19 Chapter 2 Mechanical Installation Three-bay downflow Before installing the filter After installing the filter Before installing the filter Figure 2-13 Mechanical parameters of P3100 downflow dual cooling indoor unit (unit: mm) Note For P3100 and P2070 downflow dual cooling series units, the filter is delivered along with the unit accessory, therefore, the unit integral height can be increased to 100mm after installation.
  • Page 20 400 (600, optional) Note If the height of the plenum selected for air conditioner unit exceeds 600mm, consult Emerson for non-standard production. Outdoor unit mechanical parameters See Liebert.PEX Condenser User Manual for the dimensions and mechanical parameters of the outdoor unit.
  • Page 21 Chapter 2 Mechanical Installation Base pallet cutout locations & dimensions Figure 2-17 and Figure 2-18 show the bases with the side panel removed. 128.8 One-bay series 78.8 78.8 108.5 134.5 1133 100 130 103.5 Two-bay series 128.8 108.5 134.5 1133 100 130 78.8 1700...
  • Page 22 Chapter 2 Mechanical Installation Fan aperture Fan aperture FC fan EC fan One-bay series Fan aperture Fan aperture 1513 FC fan Fan aperture Fan aperture 1513 EC fan Two-bay series Fan aperture Fan aperture Fan aperture FC fan Fan aperture Fan aperture Fan aperture 850.2...
  • Page 23 Chapter 2 Mechanical Installation EC fan FC fan One-bay upflow series 1650 740.5 740.5 1650 FC fan EC fan Two-bay upflow series 2498 FC fan 740.5 740.5 2498 EC fan Three-bay upflow series Figure 2-19 Top cover fan aperture locations of upflow series (unit: mm) Liebert.PEX2 Series Air Conditioner User Manual...

  • Page 24: Installing Indoor Unit

    Chapter 2 Mechanical Installation Side panel cutout locations & dimensions If piping and wiring from the base are difficult, connection from the side panel can be selected. The locations and dimensions of the knock-out holes are shown in Figure 2-20. You can select the in and out holes according to the actual needs, but must confirm that any two of the pipe, power cable and signal cable cannot use the same hole.

  • Page 25: Requirement Of Maintenance Space

    2 *. They are the maintenance space when the water-cooled unit connects water pipes on side or when the air-cooled unit connects the refrigerant pipes on side. If the water pipes or refrigerant pipes are laid on the bottom of the unit, no maintenance space is required Note For special applications, please consult Emerson. Liebert.PEX2 Series Air Conditioner User Manual...

  • Page 26: Installation Procedures

    1. Make a mounting base according to the dimensions in Figure 2-22, Figure 2-23 and Figure 2-24, and the requirements in Table 2-4. Emerson can supply a range of mounting bases to suit the required height. 2. Lay a layer of rubber cushion on the top, lateral of the mounting base and on the bottom of the steel plate respectively.
  • Page 27 Chapter 2 Mechanical Installation Installation hole of 4-M8×60 sems screw Front side of cabinet Rubber cushion (lateral) Steel plate Rubber cushion (top) Rubber cushion (bottom) Rear side of cabinet Angle steel Base Installation hole of 4-M8 anchor bolt Upflow Installation hole of 4-M8×60 sems screw Front side of cabinet Rubber cushion (lateral) Steel plate...
  • Page 28 Chapter 2 Mechanical Installation Installation hole of 6-M8×60 sems screw Front side of cabinet Rubber cushion (lateral) Steel plate Rubber cushion (top) Rubber cushion Rear side of cabinet (bottom) Angle steel Base Installation hole of 4-M8 anchor bolt Upflow Installation hole of 6-M8×60 sems screw Front side of cabinet Rubber cushion (lateral)

  • Page 29: Installing Outdoor Unit

    1. If the one-way equivalent length exceeds 30m, or if the vertical distance between indoor unit and outdoor unit exceeds the values in Table 2-5, consult Emerson before installation to confirm whether a pipe extension kit is needed. Table 2-5 Vertical distance between indoor unit and outdoor unit...
  • Page 30 Chapter 2 Mechanical Installation Note A trap should be installed for every 7.5m of vertical distance. Please consult Emerson for details. Connecting pipes The pipes to be connected include: 1. Condensate drain pipe of indoor unit 2. Water inlet pipe for infrared humidifier 3.
  • Page 31 Chapter 2 Mechanical Installation Note Some product may include components required by local codes. Ceramic terminal socket Over-temperature protection relay Over-temperature Water supply pipe protection switch Water pan (removable) Water outlet Water supply solenoid valve A direction Water high level sensor Water level sensor Stainless steel stud Water pan fixing screw (left and right)
  • Page 32 1. A pipe extension kit is required for ‘Eq.Lgth’ marked with *. 2. D: discharge line, L: liquid line. 3. Consult Emerson if the pipe length exceeds 60m Connecting water inlet and outlet pipe of the chilled water (dual cooling unit) The water inlet and outlet pipe of the chilled water is connected to the chilled water unit through welding.

  • Page 33: Piping For Water-Cooled Unit

    Chapter 2 Mechanical Installation pipe extension kit onto the outside project pipe of the ball valve on the liquid pipe. The outer side or the bottom of the unit is allowable. So, during installing the solenoid valve, you do not need to cut the indoor unit pipes. After the whole system is installed, you can open the ball valve to keep pressure and carry out the vacuum operation, avoiding the moisture absorption of the compressor refrigeration oil and ensuring the operation safety and life of the compressor.

  • Page 34: Lowering Fan And Removing Fixtures (Downflow Ec Fan System)

    Chapter 2 Mechanical Installation 4. Water inlet and outlet pipe of chilled water (dual cooling unit) Connecting condensate drain pipe of indoor unit Refer to the corresponding content in 2.6.1 Piping For Air-Cooled Unit. Connecting water inlet pipe of infrared humidifier Refer to the corresponding content in 2.6.1 Piping For Air-Cooled Unit.
  • Page 35 Chapter 2 Mechanical Installation Winch bracket Winch Sling Handle Hook Figure 2-30 Fan elevator assembly (winch mode) Lower the fan with the fan elevator assembly installed according to the following procedures: 1. Open the unit maintenance cover, check the fixing bolts and washers II (see Figure 2-31, totally 2 pcs) of the L shaped lifting component to make sure that it is fixed properly, and then install the fixing bolts and washers IV (totally 4 pcs) of the winch bracket, as shown in Figure 2-31.

  • Page 36: Removing Transport Fastener And Vibration Absorber

    Chapter 2 Mechanical Installation 4. Hold the handle of the winch firmly, and then turn the handle counter-clockwise to lower the fan. After the fan is sunk, the status is shown in Figure 2-33. Fan installation top cover Unit base pallet Washers III Gaskets III Figure 2-33 Lowering the fan...
  • Page 37 Chapter 2 Mechanical Installation L shaped fixing plates (3 pcs) Fixing plates (3 pcs) 固定钣金（共3个） Figure 2-34 Positions of fixing plates After the installation and before the commissioning, remove the three L shaped fixing plates, and then restore the bolts and washers.
  • Page 38 Chapter 2 Mechanical Installation 2. FC downflow unit During the transportation, some cushion foam is inserted into the triangle formed by the motor base and the fan. Remove the foam before the power-on operation. Note Never put hands into the triangle gap between the motor base and fan. Removing transportation fastener of infrared humidifier Note 1.

  • Page 39: Installation Inspection

    Chapter 2 Mechanical Installation Removing rubber string Rubber string Figure 2-38 Floating pole of high water-level switch Removing pipe fasteners To prevent the long copper pipes from scratching the metal plate and being damaged, the pipes are cushioned with foam or bound up before delivery. Remove those materials before power-on commissioning. 2.8 Installation Inspection After the mechanical installation is completed, you should check and confirm it according to Table 2-8.

  • Page 40: Chapter 3 Electrical Installation

    Chapter 3 Electrical Installation Chapter 3 Electrical Installation This chapter introduces the electrical installation of the Liebert.PEX series air conditioner, including work introduction and installation notes, wiring of indoor unit, wiring of outdoor unit and installation inspection. 3.1 Work Introduction And Installation Notes Wires to connect at site 1.

  • Page 41: Connecting Power Cable Of Indoor Unit

    Chapter 3 Electrical Installation Power supply connection Field connection terminal block Figure 3-2 Electrical control box interfaces of two-bay unit Note The two-bay series with single compressor has only one compressor MCB and a contactor. Power supply connection Field connection terminal block Figure 3-3 Electrical control box interfaces of three-bay unit 3.2.2 Connecting Power Cable Of Indoor Unit The power interfaces are located as shown in Figure 3-1, Figure 3-2 and Figure 3-3.

  • Page 42: Connecting Control Cables

    Chapter 3 Electrical Installation Table 3-1 Rated full load ampere (FLA) (unit: A) Standard model with No humidifying, No humidifying, Humidifying No humidifying or Model Standard model level 2 electric level 1 electrical level 2 electric without heating heating heating heating heating P1020...

  • Page 43: Connecting Solenoid Valve Of Pipe Extension Kit (Options, For Site Installation)

    Chapter 3 Electrical Installation The number of the sensors in parallel connection is not limited, but each unit has only one water-under-floor alarm. Remote shutdown Three remote shutdown interfaces are provided in the unit and they are shorted in the factory. Remove the shorting line between 37# and 38# and connect them to the first remote shutdown switch.

  • Page 44: Connecting Power Cables Of Outdoor Unit

    Chapter 3 Electrical Installation When two condensers with single system are used to match an indoor unit with double system, the digital signals of dry contacts J6 on the board corresponding to compressor systems 1# and 2# are respectively connected with the control terminals 70#/71# and 70A#/71A# of the indoor unit.

  • Page 45: Chapter 4 System Power-On Commissioning

    Chapter 4 System Power-On Commissioning Chapter 4 System Power-On Commissioning This chapter introduces the system power-on commissioning, including location of MCBs, and power-on commissioning of air-cooled series unit and water-cooled series unit. 4.1 Location Of MCBs The MCBs are located as shown in Figure 4-1, Figure 4-2 and Figure 4-3. The numbers in Figure 4-1 ~ Figure 4-3 have the following definitions: 1: Compressor MCB 3: Electric heater MCB...

  • Page 46: Power-On Commissioning Of Air-Cooled Series

    Chapter 4 System Power-On Commissioning Figure 4-3 MCBs location of three-bay unit 4.2 Power-On Commissioning Of Air-Cooled Series 4.2.1 Preparation Before Commissioning Mechanical part 1. The protection materials for transportation have been removed. Check that the motor pulley and the fan pulley of the FC fan model are fixed, the motor bearing and fan bearing are parallel, the belt is perpendicular to the two bearings and the tension of the belt is correct.

  • Page 47: Commissioning Procedures

    Chapter 4 System Power-On Commissioning 2) For the EC fan model, the fan itself does not require phase sequence; therefore, the phase sequence needs to be checked through compressor. After step five static charging refrigerant of 4.2.2 Commissioning Procedures is completed, you should first close the connection pipe in the pressure gauge with the refrigerant filling tank, and then use the straight screwdriver to press, so as to make one compressor contactor in the electric control box contact in short time and start the compressor.

  • Page 48: Inspection After Commissioning

    Chapter 4 System Power-On Commissioning Enter ‘USER MENUS’ -> ‘SETPOINTS’ -> ‘TEMP SET’ to adjust the temperature setting value to ‘T ’ (T setting temp setting temp - 5, ‘T ’ is the present ambient temperature on the LCD). Wait for 1min, and the compressor return air temp return air temp contactor will be closed and the LCD will display 100% cooling requirement.

  • Page 49: Power-On Commissioning Of Water-Cooled Series

    Chapter 4 System Power-On Commissioning 4.3 Power-On Commissioning Of Water-Cooled Series 4.3.1 Preparation Before Commissioning Mechanical and system part 1. The protection materials for transportation have been removed. Check that the motor pulley and the fan pulley of the FC fan model are fixed, the motor bearing and fan bearing are parallel, the belt is perpendicular to the two bearings and the tension of the belt is correct.
  • Page 50 Chapter 4 System Power-On Commissioning 4. Switch on the electric heater MCB and change the temperature setpoint to start the electric heater, or start it manually. Measure all the operation phase currents of the electric heater. To trigger the electric heater, you should: Enter the ‘USER MENUS’...

  • Page 51: Inspection After Commissioning

    Chapter 4 System Power-On Commissioning 8. Commission the FC function: Make sure that the chilled water source is supplied normally. The temperature of the chilled water ranges from 45.6°F to 48.2°F. Set the temperature point to trigger FC demand, and the chilled water valve is opened.

  • Page 52: Chapter 5 Icom Controller

    Chapter 5 iCOM Controller Chapter 5 iCOM Controller The iCOM controller uses menu operation. It can monitor, display and operate the precision cooling air conditioner and control the environment within a set range. This chapter expounds the LCD, button and indicator panel, structure chart of control menu, startup interface, main interface, USER MENUS, SERVICE MENUS, ADVANCED MENUS and EVENT NAME AND DIFINITION of the iCOM controller.
  • Page 53 Chapter 5 iCOM Controller The functions of the buttons are described in Table 5-2. Table 5-2 Function description of buttons Button Function description 1. Switch on/off the system. Press the ON/OFF button to shut down an operating system, or to start an idle system. ON/OFF 2.

  • Page 54: Structure Chart Of Control Menu

    Chapter 5 iCOM Controller 5.3 Structure Chart Of Control Menu Please refer to Appendix 3 Menu Structure Of iCOM Controller. 5.4 Startup Interface After the system is powered on, it is in the waiting state. The LCD will display the interface shown in Figure 5-2. Figure 5-2 Startup interface 5.5 Main Interface After power-on, the LCD will enter the main interface after 20s.

  • Page 55: User Menus

    Chapter 5 iCOM Controller 5.6 USER MENUS Press the enter or down button on the main interface to enter the USER MENUS, as shown in Figure 5-5. The USER 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.

  • Page 56: Graphics

    Chapter 5 iCOM Controller The EVENT LOG menu saves the last 400 system records. The event types include message, warning and alarm. When the event type is message, the LCD will display the event name only. When the event type is warning, the LCD will display the event name and the alarm indicator will turn on in red. When the event type is alarm, the LCD will display the event name, the alarm indicator will turn on in red, and an audible alarm will be raised.

  • Page 57: Sensor Data

    Chapter 5 iCOM Controller Table 5-6 Descriptions of SET ALARMS parameters Parameters Default Setting range Description U202 RTN SNSR Yes, No Return air alarm enable U203 HI TEMP 27°C 1°C ~ 99°C High return air temperature alarm setpoint U204 LO TEMP 18°C 1°C ~ 99°C Low return air temperature alarm setpoint...

  • Page 58: Total Run Hrs

    Chapter 5 iCOM Controller Table 5-8 Descriptions of DISPLAY SETUP parameters Parameters Default Setting range Description RUS, CZE, CHI, U401 LANGUAG ESP, FRE, ITA, Language options DEU, EN, POR U402 YEAR 2005 Current year U402 MONTH 01 ~ 12 Current month U402 01 ~ 31 Current day...

  • Page 59: Sleep Mode

    Chapter 5 iCOM Controller 5.6.9 SLEEP MODE In the sleep mode, the air conditioner unit can realize auto-on/off. Through the SLEEP MODE menu, you can set two time zones of the sleep mode, and select the sleep timing mode. The parameters on this menu are described in Table 5-10.

  • Page 60: Password Level

    NETWORK SETUP Figure 5-8 SERVICE MENUS 5.7.1 PASSWORD LEVEL It is operated by Emerson service personnel. 5.7.2 SETPOINTS Different from the SETPOINTS in the USER MENUS, the SETPOINTS in SERVICE MENUS has many more parameters. See Table 5-11 for the parameter descriptions.

  • Page 61: Standby

    Chapter 5 iCOM Controller Parameters Default Setting range Description S142 TRANS CH 0.1 ~ 100% Transition Change Auto, Man, ECO, SUP, S146 FANSPEED Auto VSD Fanspeed DELT S147 VSD SET 100% 0 ~ 100% Standard speed of the unit S148 VSD MIN 0 ~ 100% Minimum speed of the unit...
  • Page 62 Chapter 5 iCOM Controller WELLNESS BASIC1 Table 5-13 Descriptions of WELLNESS BASIC1 parameters Parameters Default Setting range Description S002 FREQ/YR 0pY ~ 12pY Maintenance frequency every year S003 BONUS 0MM ~ 12MM Bonus setting S004 PENALTY 0MM ~ 12MM Penalty setting S005 LAST PM Last maintenance.
  • Page 63 Chapter 5 iCOM Controller Parameters Default Description S042 OL AL Number of overload alarms occurred to compressor 2 since the last maintenance Number of digital scroll high temperature alarms occurred to compressor 2 since the last S043 DS HT AL maintenance Bonus amount.

  • Page 64: Diagnostics

    Chapter 5 iCOM Controller 5.7.5 DIAGNOSTICS The DIAGNOSTICS menu is classified into two groups. After entering the menu, pressing the up button and down button can switch between two groups and pressing the enter button can enter the parameters of the corresponding group.
  • Page 65 Chapter 5 iCOM Controller Parameters Default Setting range Description S331 H DRAIN On, Off Humidfier drain S332 HUM.C. 0.00A Electric current of humidifier S335 ALM REL On, Off Diagnostic switch of alarm relay. S336 K11 REL On, Off Diagnostic switch of free cooling relay. S337 3P1 OPEN On, Off...

  • Page 66: Set Alarms

    Chapter 5 iCOM Controller 5.7.6 SET ALARMS The SET ALARMS menu is displayed in nine pages. The first page provides the settings of alarm upper/lower limits and customized alarms. The other eight pages provide the settings of alarm delay. Alarm upper/lower limits setting The alarm upper/lower limits in the SERVICE MENUS are set the same as those in the USER MENUS.

  • Page 67: Calibration

    Chapter 5 iCOM Controller The delay enabling determines whether the alarm will be displayed and the alarm menu is entered, Options include ‘Yes’ and ‘No’. The alarm type can be set to ‘ALM’ (alarm), ‘WRN’ (warning) and ‘MSG’ (message). They determine the alarm degree of the corresponding event.

  • Page 68: Network Setup

    Chapter 5 iCOM Controller Parameters Default Description Sum of the calibrated value and return air humidity measured by digital scroll 2NTC S609 CAL DS2 29°C sensor. This value is engaged in the calculation S610 OUT SNS °C Outdoor Sensor S611 CAL OUT +0.0K Calibrated Outdoor Sensor...

  • Page 69: Options Setup

    Chapter 5 iCOM Controller Parameters Default Setting range Description S838 GW #1 S838 GW #2 Set gateway address S838 GW #3 S838 GW #4 S840 U2U PROT S841 U2U ADD Group address No. of this unit S842 U2U GRP Boot program variant load. Saving the change of S835 ~ S841 needs S843 BL CTRL S + R, No...

  • Page 70: Service Info

    FACTORV SETUP Figure 5-10 ADVANCED MENUS 5.8.1 PASSWORD LEVEL It is operated by Emerson service personnel. 5.8.2 FACTORY SETUP The FACTORY SETUP menu is displayed in nine pages. The parameters are described in Table 5-29 ~ Table 5-38. Unit code related settings...
  • Page 71 Chapter 5 iCOM Controller Parameters (1/9) Default Setting range Description Unit code status. Range: Not available: parameters set through UC01 ~ UC18 are Not available, unavailable. Invalid, OK, A009 UC STAT Invalid: parameters set through UC01 ~ UC18 are invalid. Changed, OK: parameters set through UC01 ~ UC18 are effective.
  • Page 72 Chapter 5 iCOM Controller LP sensor related settings Table 5-32 Descriptions of LP sensor related settings Parameters (4/9) Default Setting range Description A124 LP1 LOW 0 ~ 100% LP1 sensor lower threshold (percentage) A124 LP1 LOW 0bbar 10 ~ 50bar LP1 sensor lower threshold A125 LP1 HIGH...
  • Page 73 Chapter 5 iCOM Controller Analog output related settings Table 5-35 Descriptions of analog output related settings Factory 7/9 Default Setting range Description A157 ANOUT1LO 0 ~ 100% A157 ANOUT1HI 100% 0 ~ 100% A158 ANOUT2LO 0 ~ 100% A158 ANOUT2HI 100% 0 ~ 100% A159...

  • Page 74: Mbv Settings

    Chapter 5 iCOM Controller LL related settings Table 5-38 Descriptions of LL related settings Parameters (9/9) Default Setting range Description A179 LL1 LOW 0 ~ 100% HPT1 low limit percentage setting A179 LL1 LOW 10.0 ~ 50.0bar HPT1 low limit setpoint A180 LL1 HIGH 0 ~ 100%...

  • Page 75: Event Name And Definition

    Chapter 5 iCOM Controller Parameters Default Range Description A432 REPOSITION COUNTER RESET Reposition counter reset A436 U4 proportional band A437 U3A proportional band A438 U2A proportional band A439 U1 proportional band A440 L1 proportional band A441 L2A proportional band A442 L3 default proportional band A443 ACTIVE OFFSET...
  • Page 76 Chapter 5 iCOM Controller Event Definition SENSOR A FAILURE Sensor A failure LP Transducer 2 Fail Low pressure transducer 2 fails NETWORK FAILURE Network failure Low Start Pressure 1 Alarm of low start pressure 1 UNIT ON Unit on UNIT OFF Unit off SLEEP MODE Sleep mode...
  • Page 77 Chapter 5 iCOM Controller Event Definition WATER UNDER FLOOR Water leakage under floor COND PUMP-HIGH WATER Condensing pump high water level LOSS OF FLOW Loss of water flow STBY GLYCOL PUMP ON Standby glycol pump on STANDBY UNIT ON Standby unit on HW/HG HRS EXCEEDED Hot water/hot gas has exceeded operating time limit EL HEAT1 HRS EXCEEDED...
  • Page 78 Chapter 5 iCOM Controller Event Definition COMP 4 SHORT CYCLE Compressor 4 short cycle HIGH DEWPOINT High dewpoint PUMP SHORT CYCLE Pump short cycle Top Fan Failure Top fan failure CONTROL VALVE FAILURE Control valve failure PUMP 1 HRS EXCEEDED Pump 1 has exceeded operating time limit PUMP 2 HRS EXCEEDED Pump 2 has exceeded operating time limit...

  • Page 79: Chapter 6 Application Of Intellislot

    Chapter 6 Application Of INTELLISLOT Chapter 6 Application Of INTELLISLOT This chapter introduces the application of the host communication component INTELLISLOT, including introduction and installation of the host communication cards, commissioning of the host communication component and host communication networking diagram. 6.1 Introduction Of Host Communication Cards The host communication configuration of the Liebert.PEX series air conditioner supports the following two communication cards:...

  • Page 80: Commission Of Host Communication Component

    Chapter 6 Application Of INTELLISLOT Bolts Communication card Installation box 1 Installation box 2 Figure 6-3 Installing communication card Connecting cables The electrical schematic diagram of the host communication configuration is shown in Figure 6-4. Cables P61, P65 and P67 have been connected in factory. So you should only connect the host communication card to the monitoring center.
  • Page 81 Chapter 6 Application Of INTELLISLOT 1. Click Start -> Programs -> Accessories -> Communications -> HyperTerminal to start the HyperTerminal, as shown in Figure 6-5. Figure 6-5 Typing the name 2. Type the name ‘tt’ in the Name field, and click OK , as shown in Figure 6-6. Figure 6-6 Choosing serial port 3.

  • Page 82: Setting 485 Communication Card

    Chapter 6 Application Of INTELLISLOT 6.3.2 Setting 485 Communication Card Set the parameters of the 485 communication card according to the following procedures: 1. After the HyperTerminal is set, you can click OK to display the following HyperTerminal interface. 2. Type ‘1’ and the following figure will appear. 3.

  • Page 83: Setting Tcp/Ip Communication Card

    Chapter 6 Application Of INTELLISLOT 6. Type the server ID following the command prompt, and the following figure will appear. 7. Type ‘4’ and the following figure will appear. 8. Type ‘1’, ‘2’ or ‘3’ to select the baud rate used to communicate with the host, and the following figure will appear. 9.
  • Page 84 Chapter 6 Application Of INTELLISLOT 2. Type ‘2’ and the following figure will appear. 3. Type ‘1’ and the following figure will appear. Normally, Boot mode should be set to Static . If the user network can automatically distribute the address, select DHCP, and the IP Address, Netmask and Default Gateway do not need to be set.

  • Page 85: Setting Snmp Parameters Of Tcp/Ip Communication Card

    Chapter 6 Application Of INTELLISLOT 5. On the main interface, typing ‘5’ can view whether the communication status between the communication card and the Liebert.PEX series air conditioner is normal, as shown in the following figure. 6.3.4 Setting SNMP Parameters Of TCP/IP Communication Card After the HyperTerminal of the TCP/IP communication card is set, you can set the parameters of this communication card.
  • Page 86 Chapter 6 Application Of INTELLISLOT After the communication becomes normal, the interface shown in Figure 6-9 will appear. Figure 6-9 Initial interface (2) 2. Click the configure tab to enter the configuration interface, as shown in Figure 6-10. Figure 6-10 Configuration interface Liebert.PEX2 Series Air Conditioner User Manual...
  • Page 87 Chapter 6 Application Of INTELLISLOT 3. Click Access under SNMP at the left side of the interface, as shown in Figure 6-11. Type the user name ‘Liebert’ and the password ‘Liebert’, and click OK to enter the configuration interface. Note The user name and password are case-sensitive.

  • Page 88: Host Communication Networking Diagram

    Chapter 6 Application Of INTELLISLOT 5. Expand the SNMP node at the left side of the interface shown in Figure 6-13 and click Traps to set IP Address , Port and Community of the NMS used for receiving Traps. After modifying, you must click Save to save the setting. Figure 6-13 NMS configuration interface of SNMP host monitoring center (2) 6.4 Host Communication Networking Diagram The networking diagram of the TCP/IP communication card (SNMP protocol) is shown in Figure 6-14.

  • Page 89: Chapter 7 System Operation And Maintenance

    Chapter 7 System Operation And Maintenance Chapter 7 System Operation And Maintenance This chapter introduces the operation and maintenance of the Liebert.PEX series air conditioner. 7.1 System Diagnosing Test 7.1.1 Self-diagnosis Function Regular system maintenance is vital to ensure product reliability and availabilities. The iCOM controller features a diagnostic function that enables you to turn on/off the components in site manually so as to check their functionality.
  • Page 90 Chapter 7 System Operation And Maintenance 9. Use temperature and humidity measuring meters with higher precision to measure and calibrate the temperature and humidity sensors. Note Set the humidity control mode to ‘relative humidity control’ during calibration process. 10. Adjust the setpoints. Check the action of the functional parts and the auto-flush control logic of water pan of the infrared humidifier according to control logic.

  • Page 91: Filter

    2. If you are unsure about the setpoint, consult Emerson before using a filter of a different model to replace the old one.
  • Page 92 Chapter 7 System Operation And Maintenance Remove the water level standpipe to drain the water pan. Disconnect the drainage pipe, remove the safety switch of the water pan, remove the fixing screws at the two ends of the pan, and pull out the water pan. Cleanse the water pan with water and hard brush, and restore the water pan by reversing the preceding procedures.

  • Page 93: Electric Heater

    Chapter 7 System Operation And Maintenance Autoflush system of the infrared humidifier Note The normal operation of the autoflush system, the humidifier demands a water source with minimum water flow of 1gpm (0.063 l/s) and minimum pressure of 20PSIG (138kPa). The autoflush control program is an integral part of the infrared humidifier system.

  • Page 94: Cooling System

    Chapter 7 System Operation And Maintenance Manual reset switch Manual reset switch Automatic reset switch Automatic reset switch Upflow electric reheat Downflow electric reheat Figure 7-4 Upflow electric reheat and downflow electric reheat 7.6 Cooling System Check the cooling system components once a month to make sure the system function is normal and that there are no signs of wearing.

  • Page 95: Thermal Expansion Valve

    Chapter 7 System Operation And Maintenance 4. Add the sum of the preceding two pressures to find out the saturation temperature corresponding to the saturation pressure. The difference between the suction temperature at the sensing bulb and the saturation temperature is the suction superheat degree.

  • Page 96: Air-Cooled Condenser

    (like 5% phosphoric acid) into a jar and use a pump to inject the fluid into the BPHE to clean it. If the BPHE is often cleaned, use 5% oxalic acid. The cleaning of the BPHE is not covered by Emerson maintenance service. If necessary, you can consult Emerson service personnel.
  • Page 97 When the compressor is entirely burned, you need to replace the filter drier together with the compressor. In addition, check the expansion valve. If the valve is faulty, replace it too. Before the replacement, you must clean the system. If you are unsure about the cleaning method, please consult Emerson service personnel. Compressor replacing procedures 1.

  • Page 98: Chapter 8 Troubleshooting

    Chapter 8 Troubleshooting Chapter 8 Troubleshooting This chapter introduces the troubleshooting. You can read this chapter by referring to the part related to the alarms. Warning Certain circuits carry lethal voltages. Only professional technicians are allowed to maintain the unit. Extra care should be taken when troubleshooting online.
  • Page 99 Chapter 8 Troubleshooting Symptom Potential causes Items to be examined or handled 1) Check whether the fans L1, L2 and L3 are power-off, phase failure or undervoltage; 2) Check whether the analog signals output from P51 meet 0 ~ 10Vac requirements;...
  • Page 100 Chapter 8 Troubleshooting Symptom Potential causes Items to be examined or handled Water flow too big or temperature of input Check the water system water too low (water-cooled) Refrigerant leaked Locate the leakage point, repair it and add refrigerant Low discharge Fan speed controller of outdoor unit is pressure faulty, while the output voltage remains...
  • Page 101 Chapter 8 Troubleshooting Symptom Potential causes Items to be examined or handled Set the preset temperature after the first startup, the unit The difference between room air return will power off, restart the system can run the FC system; temperature and setting temperature is when the unit is in normal state, but the FC fan stops for too high (more than A138 setting one hour, it means that the present refrigeration...
  • Page 102 Chapter 8 Troubleshooting Table 8-4 Troubleshooting of heating system Symptom Potential causes Items to be examined or handled Check the state of the iCOM controller, and verify No heating demand whether there is a humidifying demand Heating auxiliary relay failure Check the heating auxiliary relay and its cable In the case of two-stage heating, check terminals P34-1 and P34-2.
  • Page 103 Chapter 8 Troubleshooting Affiliated table 2: maintenance table (six-month) Inspection date: ___________________ Prepared by: ___________________ Unit model: ___________________ Unit SN: ___________________ Filters ___ 2. Check the electric valve ___ 1. Check for clogging or damage ___ 3. Check for leakage ___ 2.

  • Page 104: Appendix 1 Composition Of Electrical Control Box

    Appendix 1 Composition Of Electrical Control Box Appendix 1 Composition Of Electrical Control Box A amplified A处放大 1318 19 20 21 Figure 1 Internal composition of electric control box of one-bay series 16 17 20 21 A amplified A处放大 Figure 2 Internal composition of electric control box of two-bay series 1: Compressor MCB 8: Control board MCB...
  • Page 105 Appendix 1 Composition Of Electrical Control Box 16 17 20 21 A amplified A处放大 Figure 3 Internal composition of electric control box of three-bay series 1: Compressor MCB 8: Control board MCB 15: Control board contactor 22: Main N terminal 2: Busbar 9: Fuse board 16: Condenser contactor...

  • Page 106: Appendix 2 Circuit Diagram

    Appendix 2 Circuit Diagram Appendix 2 Circuit Diagram NOTES: PRIMARY P65 CONNECTION 1. ALL FIELD WIRING TO BE PER LOCAL CODES. USE COPPER CONDUCTORS ONLY. LINE SEE UNIT NAMEPLATE VOLTAGE 2. SEE INSTALLATION AND USER MANUAL(S). 65-1 12-1 13-1 TH/HU ANALOG 3.

  • Page 107: Appendix 3 Menu Structure Of Icom Controller

    Appendix 3 Menu Structure Of iCOM Controller Appendix 3 Menu Structure Of iCOM Controller User Menus SETPOINTS EVENT LOG GRAPHICS SET ALARMS SENSOR DATA DISPLAY SETUP TOTAL RUN HRS SLEEP MODE SERVICE INFO ACTIVE ALARMS U401 LANGUAGE U 502 MOTOR(S) U 602 U102 TEMP SET U202 RTN SNSR...
  • Page 108 Appendix 3 Menu Structure Of iCOM Controller SERVICE MENUS STANDBY SETTINGS DIAGNOSTICS NETWORK SETUP SETPOINTS WELLNESS BASIC SET ALARMS CALIBRATION OPTIONS SETUP SERVICE INFO S202 RTN SNSR S402 COMP SEQ S042 OL AL ANALOG2 S602 RTN TEMP S802 # UNITS S302 HP1 CODE S342...
  • Page 109 EMERSON NETWORK POWER ASIA Marketing.AP@Emerson.com Emerson Network Power. EmersonNetworkPower-Partner.com AP10ENT-PEXDXV1-UM...

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