Document Outline

• 1.0 Introduction
  • 1.1 Features
    • Large and Small Displays
      • Figure 1 Liebert iCOM components
• 2.0 Liebert iCOM Display Components and Functions
  • Figure 2 Liebert iCOM display components
  • Table 1 Keyboard icons and functions
  • Figure 3 Status menu, large display, graphical view
  • Figure 4 Liebert iCOM default screen symbols
  • 2.1 Navigating Through the Liebert iCOM Menus
    • 2.1.1 Control Interface
    • 2.1.2 Accessing Submenus
      • Accessing Submenus on Small Displays
      • Accessing Submenus on Large Displays
    • 2.1.3 Entering a Password
      • Figure 5 Menu tree—Small display, stand-alone or networked
      • Figure 6 Menu tree—Large display, stand-alone
    • 2.1.4 Viewing Multiple Units with a Networked Large Display
      • Figure 7 Menu tree—Large display, networked
      • Figure 8 User menu icons
      • Table 2 User menu icons
      • Figure 9 Service menu icons
      • Table 3 Service menu icons
• 3.0 Operation
  • 3.1 Single Unit Functions
    • 3.1.1 Unit/Fan Control
      • Start - Stop
        • Figure 10 Start-stop priority switches
      • Autorestart
      • Loss of Power Alarm
      • Fan Alarm / Fan Protection Settings
    • 3.1.2 Chilled Water Units with Variable Speed Motor
      • VSD Fan Speed (Auto or Manual VSD Fan Speed Control)
      • VSD Setpoint (VSD Fan Speed Setting)
    • 3.1.3 General Compressor Requirements
      • Low-Pressure Time Delay
      • High Pressure Alarm
      • Digital Scroll High Temperature
    • 3.1.4 Compressor Timing—Units With Two Compressors
    • 3.1.5 Compressor Sequencing
  • 3.2 Motorized Ball Valve in Digital Scroll Units
    • 3.2.1 MBV Operation After Compressor is Turned Off
    • 3.2.2 Service Offset—Changing System Pressure Settings
  • 3.3 Temperature Control—Single Source Cooling (No Extra Cooling Coil)
    • 3.3.1 Temperature Proportional Band
      • Figure 11 Temperature proportional band
    • 3.3.2 Compressor Control
      • Compressor Proportional Bands
        • Figure 12 One single-step compressor without unloaders
        • Figure 13 Two single-step compressors without unloaders or one compressor with an unloader (two-step)
        • Figure 14 Two compressors with unloaders (four-step)
        • Figure 15 Digital scroll capacity modulation, 10-100% variable
        • Figure 16 Single and dual digital scroll compressor activation points
    • 3.3.3 Chilled Water Control
      • Figure 17 Three-point actuator control (example: cooling)
  • 3.4 Temperature Control—Second Cooling Source
    • 3.4.1 Differential Temperatures / Controls (Comparator Circuit)
      • Figure 18 Second cooling source and compressorized cooling
      • GLYCOOL™ Cooling—Free-Cooling
      • Dual Cooling Source
  • 3.5 Temperature Control—Reheat
    • 3.5.1 Three-Stage Electric, Hot Gas and Hot Water Reheat
      • Table 4 Reheat configuration types
      • Figure 19 Three-stage heating
    • 3.5.2 SCR Reheat
      • Figure 20 Two single-step compressors with SCR reheat set to Tight mode
      • Figure 21 Two single-step compressors with SCR reheat set to Standard mode
  • 3.6 Humidity Control
    • Figure 22 Humidity proportional band
    • 3.6.1 Humidification
      • Infrared Humidifier
        • Table 5 Parameters for infrared humidifier control
    • 3.6.2 Dehumidification
      • Dehumidification Low Limit
      • Dehumidification Compressor Quantity
        • Table 6 Dehumidification With Comp settings
      • Reheat During Dehumidification
  • 3.7 Control Types
    • 3.7.1 Temperature and Humidity Control Types
    • 3.7.2 Humidity Sensor Reading Control Types
    • 3.7.3 Supply Limit—Optional
    • 3.7.4 High and Low, Temperature and Humidity Events
    • 3.7.5 User Inputs / Customer Inputs
      • Table 7 Customer inputs
    • 3.7.6 Event Types and Properties
      • Table 8 Possible event settings—some events not available in all units
  • 3.8 Possible Event Notifications
    • Table 9 Event notifications—large or small display
  • 3.9 Next Maintenance Calculation
    • 3.9.1 Calculation of Next Maintenance and Diagnostics
      • Calculating Unit Wellness
      • Parameters for Next Maintenance Calculation
• 4.0 Teamwork
  • 4.1 Teamwork Modes
    • 4.1.1 Application of Teamwork Modes
    • 4.1.2 No Teamwork
    • 4.1.3 Teamwork Mode 1
      • Figure 23 Teamwork Mode 1 with two cooling units
    • 4.1.4 Teamwork Mode 2
    • 4.1.5 Standby – Rotation
      • Typical Standby (Lead/Lag) Function
      • Standby and Cascade
• 5.0 Installing a Liebert iCOM Unit-to-Unit Network
  • 5.1 Placement of Cooling Units
  • 5.2 U2U Hardware: Cables and Network Switch
    • Minimum Network Switch Requirements
  • 5.3 Wiring for Unit-to-Unit Communications—U2U
    • Liebert iCOM U2U Ethernet Network
      • Table 10 Sample Liebert iCOM network configurations
    • 5.3.1 Wiring a Liebert iCOM U2U Network
      • Small Displays
        • Figure 24 Connecting two cooling units, each with a small display using a crossover Ethernet cable
      • Large Displays
      • Wall-Mount Large Display
      • Combining Large and Small Displays on a U2U Network
        • Figure 25 Wiring a small display for stand-alone operation
        • Figure 26 Wiring a small display for U2U network operation
        • Figure 27 Wiring a large display for stand-alone operation
        • Figure 28 Wiring a large display for U2U network operation
        • Figure 29 Liebert iCOM input-output control board
      • Liebert vNSA
        • Table 11 Ports available for connecting Liebert iCOM control devices
        • Figure 30 Liebert vNSA with optional remote large display
  • 5.4 External Communications—Building Management Systems, Liebert SiteScan®
• 6.0 Mounting a Large Display on a Wall
  • 6.0.1 Location Considerations
    • Necessary Mounting Items
    • Mounting Instructions
      • Figure 31 Liebert iCOM display dimensions
• 7.0 User Menu Parameters
  • Table 12 Setpoints parameters
  • Spare Part List—Large Display Only
    • Table 13 Spare part list parameters—large display only
    • Table 14 Event log parameters
    • Table 15 View network parameters—large display only*
    • Table 16 Set alarms parameters
    • Table 17 Sensor data
  • Active Alarms
    • Table 18 Active alarms parameters
    • Table 19 Display setup parameters
    • Table 20 Total run hours parameters
    • Table 21 Timer parameters—Sleep Mode
    • Table 22 Service contacts parameters
• 8.0 Service Menu Parameters
  • Table 23 Setpoints parameters
  • Unit Diary—Large Display Only
    • Table 24 Unit diary parameters
    • Table 25 Standby settings / lead-lag parameters
    • Table 26 Maintenance / wellness settings parameters
    • Table 27 Diagnostics / service mode parameters
    • Table 28 Set alarms parameters
    • Table 29 Sensor calibration / setup parameters
    • Table 30 System / network setup parameters—large display only
    • Table 31 Network setup parameters
    • Table 32 Options setup parameters
    • Table 33 Service contact info parameters