Vertiv Liebert iCOM Installation and maintenance instructions

Liebert®
Liebert® iCOM™
Installer/User Guide
Intelligent Communication and Monitoring forLiebertCRV

Vertiv | Liebert® iCOMInstaller/User Guide
Technical Support Site
If you encounter any installation or operational issues with your product, check the pertinent section of this
manual to see if the issue can be resolved by following outlined procedures.
Visit https://www.Vertiv.com/en-us/support/ for additional assistance.
The information contained in this document is subject to change without notice
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TABLE OF CONTENTS
1 Getting Started with iCOM™ 1
1.1 Touchscreen Display and User Interface 1
1.2 Touchscreen Status Dial 3
1.2.1 Dial Background Color Status Indication 5
1.3 Control Header 6
1.3.1 Powering On the iCOM and Logging In/Unlocking Controls 6
1.3.2 Powering On the Thermal Management Unit 7
1.3.3 Powering Off the Thermal Management Unit 8
1.3.4 Logging Out 8
1.3.5 Calibrating the Touchscreen 8
1.3.6 Setting the Date and Time 9
1.3.7 Searching 9
1.4 Using Context Sensitive Help 9
1.5 About iCOM Version 10
1.6 Accessing the User, Service, and Advanced Menus 10
1.7 User Menu 10
1.8 Service Menu 11
1.8.1 Service Menu Options 11
2 User Operation 13
2.1 Viewing and Editing Setpoints for the Cooling Unit 13
2.1.1 Editing Humidity Setpoints 13
2.1.2 Editing Temperature Setpoints 14
2.2 Viewing Unit Alarms 15
2.2.1 To View Alarms 15
2.2.2 Alarm Detail Fields 15
2.2.3 Silencing an Audible Alarm 16
2.2.4 Acknowledging Alarms 16
2.3 Viewing the Event Log 17
2.4 Viewing Sensor Data 17
2.5 Managing Run Hours for a Component 18
2.5.1 Setting Run Hours to Zero 18
2.6 Viewing Teamwork, Standby, andCascade Status 18
2.6.1 To View the Teamwork Details 18
3 Service Operation 19
3.1 Editing Setpoints for the Cooling Unit 19
3.1.1 Setpoints Options 19
3.1.2 Configuring Temperature Setpoints 19
3.1.3 Temperature Control—TemperatureSetpointsandCooling Operation 21
3.1.4 Compressor Control by Cooling Requirement 24
3.1.5 Configuring High/Low Limit Setpoints 29
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3.1.6 Configuring Humidity Setpoints 30
3.1.7 Humidity Control 31
3.1.8 Configuring Fan Setpoints 33
3.1.9 Manual Fan Speed Control 34
3.1.10 Automatic Fan Speed Control 35
3.2 Scheduling Condenser and Cooling Unit Tasks 36
3.2.1 Scheduling Condenser Low Noise Operation 36
3.2.2 Scheduling Condenser Fan Reversal 37
3.2.3 Scheduling Sleep Times for Thermal Management Units 37
3.3 Setting General Thermal Management Unit Options 38
3.3.1 Setting Miscellaneous Options 38
3.3.2 Automatic Restart after Power Failure 40
3.3.3 Setting Fan Options 40
3.3.4 Setting Compressor Options 42
3.3.5 Setting Reheat Options 43
3.3.6 Reheat Control 44
3.3.7 Setting Humidifier Options 46
3.3.8 Setting Dehumidification Options 46
3.3.9 Setting Water Leak Detector Options 47
4 Managing Events: Alarms,Warnings,andMessages 49
4.1 Event Properties 49
4.1.1 To Open the Panel 49
4.2 Enabling Events and EditingEventSettings 50
4.3 Selecting Event Type and SettingAlarm/WarningNotification 51
4.3.1 Notification Properties 51
4.4 Enabling the Audible Alarm Notification 54
4.5 Remote Alarm Device and Customer Input Events 54
4.5.1 Setting Up Customer Input Events 55
5 Unit to Unit (U2U) Networking 57
5.1 Preparing for U2U Group Set Up 57
5.2 Configuring U2U Network Settings 58
5.2.1 To Configure U2U Networking 58
5.2.2 Troubleshooting Network Settings Issues 60
5.2.3 Modifying U2U Network Settings 61
6 Teamwork, Standby, and RotationforCoolingUnits 63
6.1 Teamwork Modes 63
6.1.1 To Set Up Team Work 63
6.1.2 No Teamwork—Multiple Zones in One Room 65
6.1.3 Teamwork Mode 1—Parallel Operation 65
6.1.4 Teamwork Mode 2—Independent Operation 65
6.1.5 Teamwork Mode3—Optimized Aisle Operation 66
6.2 Assigning Cooling Units to Standby (Lead/Lag) 66
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6.2.1 To Set Up Lead/Lag Operation 66
6.3 Setting a Rotation Schedule 67
6.3.1 Unit Rotation Options 67
6.3.2 Manually Rotating the Operating and Standby Units 68
7 External Monitoring andBuilding ManagementSystems 69
7.1 BMS and IntelliSlot Settings 69
7.1.1 Configuring BMS Communication with IntelliSlot Card 69
7.1.2 Setup Communication with a Card 70
7.1.3 Setting BMS Control Settings 70
8 Configuring Auxiliary Devices 73
8.1 Fluid Temperature Monitoring 73
8.1.1 Fluid Sensor Options 73
8.2 Wired Remote Sensors 73
8.2.1 Wired Remote Sensor Set Up Options 74
8.2.2 Wired Remote Sensor—Sensor Property Options 75
8.3 Supply Sensors 76
9 Administering Firmware, Settings, and Security 77
9.1 iCOM Firmware Upgrades 77
9.1.1 Compatibility with Earlier Versions of iCOM 77
9.1.2 Updating iCOM Display Firmware 77
9.1.3 Updating iCOM Control Board Firmware 77
9.1.4 Control Board Firmware Upgrade Options 78
9.2 Backing Up, Importing/Exporting and Restoring Display Settings 79
9.2.1 To Back Up or Restore Display Settings 79
9.2.2 Resetting Display Settings to Defaults 79
9.3 Backing Up and Restoring Control Board Settings 80
9.3.1 Control Board Back Up and Restore Options 80
9.4 Managing Access Permission and Passwords 81
9.5 Configuring with the Start Up Wizard 82
9.5.1 To Update System Information Using the Wizard 82
9.5.2 Start Up Wizard Options 82
10 Performing Diagnostics 83
10.1 Cooling Unit Status LED 83
10.2 Enabling Manual Mode for Diagnostics 83
10.2.1 Disabling Diagnostics Manual Mode 84
10.3 Diagnosing Evaporator Fan Issues 84
10.3.1 Diagnostics—Evaporator Fan Options 84
10.4 Diagnosing Compressor Circuit Issues 85
10.4.1 Diagnostics—Compressor Circuit Options 85
10.4.2 Resetting High Pressure Alarm Code 87
10.4.3 Resetting Low Pressure Alarm Code 87
10.4.4 Resetting High Temperature Alarm Counter 87
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10.5 Diagnosing Humidifier Issues 87
10.5.1 Diagnostics—Humidifier Options 87
10.6 Diagnosing Digital Output Issues 88
10.6.1 Diagnostics—Digital Output Options 88
10.7 Diagnosing Analog Output Issues 88
10.7.1 Diagnostics—Analog Output Options 88
10.8 Diagnosing Customer Input Issues 89
10.8.1 Diagnostics—Customer Input Options 89
10.9 Diagnosing Dehumidifier Issues 89
10.9.1 Diagnostics—Dehumidifier Options 89
10.10 Managing Brown Out Protection 90
10.10.1 Diagnostics—Brown Out Protection Options 90
11 Customizing the iCOM Display 91
11.1 Setting General Display Properties 91
11.1.1 Unit Display Options 91
11.2 Customizing Main Display Views 92
11.2.1 Moving Content 92
11.2.2 Resizing Content 92
11.2.3 Adding and Adjusting Content 93
11.2.4 Removing Content 94
11.3 Customizing Parameter and Field Labels 94
11.3.1 Exporting, Importing and Customizing Labels Using a Text Editor 96
12 Liebert iCOM Hardware Installation 99
12.1 Return Air Temperature/Humidity Sensor 99
12.1.1 P67: Return Air Temperature—Humidity Board 99
12.1.2 Jumper P3 CANbus Termination 102
12.2 Installing Wired Remote Sensors 102
12.2.1 Setting DIP Switches and Labeling 2T Sensors 102
12.2.2 Terminating the Last Sensor on the CANbus Link 105
12.2.3 Routing CANbus Cable and Preparing for Sensor Installation 107
12.2.4 Installing 2T Sensors in the Racks to Monitor 112
12.2.5 Connect the CANbus Cable and Ground 115
12.3 Installing the U2U Network 117
12.3.1 Required Network Equipment 117
12.3.2 Planning Wiring Runs 117
12.3.3 U2U Wiring Connections 117
12.3.4 Wiring Cooling Units without Wall Mount Displays 118
12.3.5 Wiring Cooling Units with Wall Mount Displays 123
Appendices 125
Appendix A: Technical Support and Contacts 125
Appendix B: Setpoints and Alarm Settings by Line ID 127
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1 GETTING STARTED WITH iCOM™
The Liebert® Liebert® iCOM™ offers the highest capability for unit control, communication, and monitoring of Liebert
thermal management units. It is available factory installed on new units and assemblies or may be retrofitted in existing
units.
1.1 Touchscreen Display and User Interface
The Liebert® iCOM touchscreen and user interface speeds set up and installation and simplifies control of Liebert® thermal
management units, literally putting cooling system monitoring and management at your fingertips.
•The resistive touchscreen is used with a firm touch, or consider using a stylus when interacting with the
touchscreen.
•User and service menus are password protected to prevent unauthorized changes to cooling unit operation.
•The touchscreen is back lit and auto-dims after a period on non-use, then turns off. Touch the screen to
illuminate the main screen.
•iCOM ships with default settings for efficient and effective operation of most cooling units and is easily
configured to meet any need.
•iCOM menus and displays are based on the options installed on the cooling units that it monitors and manages.
1 Getting Started with iCOM™ 1

Figure 1.1 iCOM Main Display
Item Description
1 Alarms present. Displays the number of active alarms.
2 Menu icon. When unlocked, displays a menu for user or service options depending on which icon is selected.
3
User icon. When selected, the user options are available on the main display and menu.
NOTE: You must unlock the display with the User PIN to access the menu and options.
See Powering On the iCOM and Logging In/Unlocking Controls on page6.
4
Service icon. When selected, the service options are available on the main display and menu.
NOTE: You must unlock the display with the Service PIN to access the menu and options.
See Powering On the iCOM and Logging In/Unlocking Controls on page6.
5
Advanced icon. When selected, the advanced options are available on the main display and menu.
NOTE: You must unlock the display with the Service PIN to access the menu and read-only options.
See Powering On the iCOM and Logging In/Unlocking Controls on page6.
6 Cooling unit parameters. Status display of selected system parameter settings. See Adding and Adjusting Content on page93
7 Unit Identification. You may customize the unit name up to 6 characters/numbers.
8 Search icon. Open the keyboard to search for controls and setting locations. See Searching on page9.
9 Date/Time.
Table 1.1 Main Display Controls and Options
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Item Description
10
Lock/Unlock icon. Indicates whether or not the user and service options are accessible.
•Locked icon: display is read-only
•Unlocked icon: user or service is logged-in and options are accessible.
See Powering On the iCOM and Logging In/Unlocking Controls on page6.
11 Secondary content panel. When accessing settings/configuration via the menus, the settings display in the right, secondary panel.
12 Summary of current unit function. You can customize to show fan speed, cooling, percentages from any installed device, and any physical
(sensor) values.
13 Status Dial. Circular display of setpoints and environmental conditions of the unit. See Touchscreen Status Dial below.
14 Teamwork mode icon. In a panel with “Status” content, the Teamwork Mode icon indicates the mode selected. For details and descriptions of the
teamwork controls, see Teamwork Modes on page63.
15 Control header. Controls to access the user and service menus. See Control Header on page6.
16 Status Header. Displays the alarm status, unit identification, and the current date and time.
Table 1.1 Main Display Controls and Options (continued)
1.2 Touchscreen Status Dial
The dial in the primary control panel displays read-only control sensors, setpoints, and environmental conditions for unit
status at a glance. See Figure 1.2 on the next page.
The center of the dial displays sensor readings and changes color according to alarm thresholds as the readings rise and
fall, see Dial Background Color Status Indication on page5.
Touching the center of the dial cycles through a set of sensor settings, and you can select the readings displayed, see
Adding and Adjusting Content on page93.
1 Getting Started with iCOM™ 3

Figure 1.2 Dial Sections
Item Description
1
Control sensor and its setpoint. The sensors and setpoints displayed depend on the configuration of your unit.
You may see only temperature control, or if the unit includes humidity control, that displays on the dial as well.
If the sensor selected for fan control is the same as that selected for temperature control, the dial displays the fan-control sensor and setpoint, as
shown in Figure 1.2 above.
2 Single or multiple sensor readings. Cycle through readings by touching the displayed reading.
Table 1.2 Dial Sections
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1.2.1 Dial Background Color Status Indication
The background color of the dial indicates whether or not the unit is powered on, and it also responds to threshold settings
of the control sensor reading. See Figure 1.3 below. Table 1.3 below describes the background color displayed if the
selected sensor reading has threshold limits set.
Figure 1.3 Dial Background Colors
Item Description
1 Sensor reading is within threshold limits.
2 Unit is powered off.
3 Sensor reading is above threshold limit or the unit is in an alarm condition.
4 Sensor reading is below threshold limit.
Sensor/Value Selected Threshold Limit Background Color
Return Temp
None Green
High return temperature Red
Return Humidity
Low return humidity Blue
High return humidity Red
Dew Point
Low dew point Blue
High dew point Red
Supply Temp
Low supply temperature Blue
High supply temperature Red
Average Rack Temp
Low remote temperature Blue
High remote temperature Red
Max Rack Temp
Low remote temperature Blue
High remote temperature Red
Table 1.3 Background Color Displayed by Selected
Value and Threshold Limit
1 Getting Started with iCOM™ 5

Sensor/Value Selected Threshold Limit Background Color
Min Rack Temp
Low remote temperature Blue
High remote temperature Red
Static Pressure
Low static pressure Blue
High static pressure Red
Outdoor Temp None Green
Outdoor Humidity None Green
Table 1.3 Background Color Displayed by Selected
Value and Threshold Limit (continued)
1.3 Control Header
The control header contains the controls to access the user and service settings. The display is locked when started initially
and when restarted after a period of inactivity.
1.3.1 Powering On the iCOM and Logging In/Unlocking Controls
iCOM is powered on when power is switched on at the cooling unit’s disconnect switch and you activate the display by
touching it.
iCOM is locked when started and also locks after a period of inactivity to prevent unauthorized changes. A four digit
password is required to access the user and service menus and options, and the advance menu displays as read-only when
logged in at the service level.
NOTE: The factory default inactivity period is one minute. To change the inactivity period, see Setting General Display
Properties on page91.
NOTE: The factory default password for user and service log in are provided. We recommend you change passwords
as necessary to prevent unauthorized changes. See Managing Access Permission and Passwords on page81.
•Default user password: 1490
•Default service password: 5010
To unlock the controls:
1. On the header, touch .The keypad opens.
2. Touch the numbers/characters for your password, then touch . Depending on the password entered and
your level of access, the User and/or Service options, and view-only access to the Advanced menu are
accessible. See Accessing the User, Service, and Advanced Menus on page10.
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1.3.2 Powering On the Thermal Management Unit
NOTE: Depending on the operating state, there are start and stop priority switches that may prevent the cooling unit
from operating even though power to the unit is switched on and you have turned it on via iCOM.
The cooling unit operates only when all switches are closed. For example, even though you have turned on the unit
through iCOM, if the BMS remote monitoring system is sending a command to turn off the unit, the cooling unit
remains off.
NOTE: You must be logged in to access the menu options. See Powering On the iCOM and Logging In/Unlocking
Controls on the previous page.
To power-on the unit:
1. Touch , then >Turn Unit On. The TURN UNIT ON dialog opens.
2. Touch Turn Unit On. The cooling unit starts and the operating status is displayed as shown in Figure 1.4 below.
Figure 1.4 Unit Status on iCOM Display
Item Description
1 Current status of the unit. See Table 1.4 on the next page.
2 Teamwork icon. See Viewing Teamwork, Standby, andCascade Status on page18.
1 Getting Started with iCOM™ 7

Unit Status
Text Description
ALARM OFF An alarm forced the unit to turn off. See Viewing Unit Alarms on page15.
MANUAL Controlled by a service technician. See Enabling Manual Mode for Diagnostics on page83.
DISPLAY OFF Unit is turned off at the iCOM display. See Powering On the Thermal Management Unit on the previous page.
ALARM
STANDBY In standby because of an active alarm on the unit. See Viewing Unit Alarms on page15.
STANDBY In standby because of service-menu setting. See Assigning Cooling Units to Standby (Lead/Lag) on page66.
UNIT ON Operating normally without alarms or warnings.
WARNING ON Active warning, but still operating. See Viewing Unit Alarms on page15.
ALARM ON Active alarm, but still operating. See Viewing Unit Alarms on page15.
REMOTE OFF
Turned off by remote shutdown terminal.
Occurs when a normally-closed set of 24 V contacts opens. The Remote On/Off and Display On/Off switches are in series, and the cooling
unit will only turn-on if both switches are on/closed,. If one is off/open the unit turns off.
MONITORING
OFF
Turned off by remote monitoring system.
Check the remote monitoring device or call Vertiv technical support for assistance.
RESTART
DELAY Not yet operational after a power cycle because the restart delay timer is active.
Table 1.4 Cooling Unit Statuses Displayed
1.3.3 Powering Off the Thermal Management Unit
NOTE: You must be logged in to access the menu options. See Powering On the iCOM and Logging In/Unlocking
Controls on page6.
1. Touch , then >Turn Unit Off. The TURN UNIT OFF panel opens.
2. Touch Turn Unit Off. The unit begins a power off countdown then powers off.
1.3.4 Logging Out
Log out occurs automatically when the display back light turns off for inactivity.
NOTE: The factory default inactivity period is one minute. To change the inactivity period, see Setting General Display
Properties on page91
•To log out manually, touch the lock icon. The icon indicates LOCKED.
1.3.5 Calibrating the Touchscreen
Use a firm touch or a stylus for the best response. To improve interaction with quicker and more-accurate touch response,
calibrate the touchscreen.
1. On the User menu, touch Display Options >Display Properties.
2. On the UNIT DISPLAY panel, touch Calibrate Screen and follow the prompts to calibrate.
•If you cannot access the calibration because of screen response, continue with step 3.
3. At the cooling unit disconnect switch, power off the unit and then power back on.
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4. Touch your finger to the screen and hold it there while the display boots.
5. When the LED begins flashing, remove your finger.
Cross hairs appear in each corner and in the center of the display.
6. Touch the center of each cross hair ONCE ONLY. (Touching more than once interrupts the calibration and you
must start over at step 3.)
Cross hairs disappear and the display reboots when calibration is complete.
1.3.6 Setting the Date and Time
The correct date and time is critical for warnings, alarms, and scheduling.
1. Touch , then > Display Options >Display Properties >Date &  Time.
2. Touch the date field, use the arrows to select the date, and touch OK.
– or –
Touch the time field, use the arrows to set the time, and touch OK.
3. Select the date and time format if necessary.
4. Touch Save.
1.3.7 Searching
When logged in, you can use the display search to find the location of settings options based on a term, service code, or
parameter. You can also search by the line ID used in the iCOM before the touchscreen model. For a listing of the line IDs,
see Setpoints and Alarm Settings by Line ID on page127.
NOTE: You must be logged in to access the display search. See Powering On the iCOM and Logging In/Unlocking
Controls on page6.
1. In the control header, touch the search field. The keyboard opens.
2. Type the term and touch . A list of locations that contain the searched term opens.
3. To go to a listed location, touch an item, then touch Go. The panel for the selected location opens.
– or –
To view the service codes and parameter entries related to the searched term, touch View Parameter Directory
Entries (the number of related entries is included in the option).
The Parameter Directory opens. You may further refine the search in the directory.
1.4 Using Context Sensitive Help
Touching the Help icon, , on the right-hand side of the display opens the Help drawer with information about the
panel or dialog currently on the display.
You can use search and the topic index to find further information.
To close the Help drawer, touch the close arrow, .
1 Getting Started with iCOM™ 9

1.5 About iCOM Version
The version, build, and other firmware information for the iCOM display board may be helpful when servicing or
troubleshooting. To locate the firmware version of the iCOM control board, see Updating iCOM Control Board Firmware on
page77.
•Touch , then > About. The ABOUT panel opens.
1.6 Accessing the User, Service, and Advanced Menus
iCOM operating functions that monitor and control a cooling unit are accessed via the User and Service menus.
NOTE: You must be logged in to access the menu options. See Powering On the iCOM and Logging In/Unlocking
Controls on page6.
1. To access a menu, touch the icon for the menu you want, , or , in the control header, see
Control Header on page6. The orange bar appears below the menu name when selected indicating that this is
the menu content that will be displayed.
2. Touch the menu icon, . The menu opens.
1.7 User Menu
The user menu lets you view system and unit statuses and edit some setpoints.
User Menu Options
Setpoints
Opens the SETPOINTS panel. See Viewing and Editing Setpoints for the Cooling Unit on page13.
Active Alarms
Opens the ALARMS panel. See Viewing Unit Alarms on page15.
Event Log
Opens the EVENT LOG panel. See Viewing the Event Log on page17.
Sensor Data
Opens the SENSOR DATA panel. See Viewing Sensor Data on page17.
Display Options
Opens the Display Options menu:
•Customize Layout—see Customizing Main Display Views on page92.
•Custom Labels—see Customizing Parameter and Field Labels on page94.
•Date & Time—see Setting the Date and Time on the previous page.
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Total Run Hours
Opens the RUN HOURS panel. See Managing Run Hours for a Component on page18.
About
Opens the ABOUT panel. See About iCOM Version on the previous page.
Turn Unit On/Off
Depending on unit’s status, open the TURN UNIT ON or TURN UNIT OFF dialog. See Powering On the Thermal
Management Unit on page7, or Powering Off the Thermal Management Unit on page8.
1.8 Service Menu
The service menu lets you view and edit setpoints and perform many other functions.
1.8.1 Service Menu Options
Setpoints
Opens the SETPOINTS panel. See Editing Setpoints for the Cooling Unit on page19.
Diagnostic/Service
Opens the Diagnostic/Service menu:
•Diagnostics: See Performing Diagnostics on page83.
•Technical Support: Contact information for the cooling unit and iCOM display.
Alarm/Event Setup
Opens the ALARMS & EVENTS panel. See Managing Events: Alarms,Warnings,andMessages on page49,.
BMS & Teamwork
Opens the BMS & Teamwork menu:
•U2U Setup: See Configuring U2U Network Settings on page58.
•Teamwork/Standby: See Teamwork, Standby, and RotationforCoolingUnits on page63
•BMS Setup: See BMS and IntelliSlot Settings on page69.
Scheduler
Opens the SCHEDULER panel. See Scheduling Condenser and Cooling Unit Tasks on page36.
Options Setup
Opens the OPTIONS SETUP panel. See Setting General Thermal Management Unit Options on page38.
1 Getting Started with iCOM™ 11

Auxiliary Device Setup
Opens the Auxiliary Device Setup menu:
•Sensors: See Wired Remote Sensors on page73.
Backup & Security
Opens the Backup & Security menu:
•Display Backup and Restore: See Backing Up, Importing/Exporting and Restoring Display Settings on
page79.
•Control Backup and Restore: See Backing Up and Restoring Control Board Settings on page80.
•Display Upgrade: See Updating iCOM Display Firmware on page77.
•Control Upgrade: See Updating iCOM Control Board Firmware on page77.
•Manage Permissions: See Managing Access Permission and Passwords on page81.
Turn Unit On/Off
Depending on unit’s status, open the TURN UNIT ON or TURN UNIT OFF dialog. See Powering On the Thermal
Management Unit on page7, or Powering Off the Thermal Management Unit on page8.
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2 USER OPERATION
2.1 Viewing and Editing Setpoints for the Cooling Unit
NOTE: User level access allows viewing and editing only a limited number of setpoints. To view or adjust all setpoints,
you must have service level access. See Editing Setpoints for the Cooling Unit on page19.
NOTE: Depending on the type of thermal managment unit, included components, and control settings of your system,
all of the options listed may not be available on your iCOM display.
2.1.1 Editing Humidity Setpoints
1. Touch , then >Setpoints. > Humidity Control. The HUMIDITY CONTROL secondary panel opens.
2. Refer to the User Humidity Setpoint Options below and Humidity Control on page31 to adjust
thesetpointoptions, then touch Save. The setpoint is updated.
•Touch Cancel to discard the changes.
NOTE: Depending on the type of thermal management unit, included components, and control settings of your
system, all of the options listed may not be available on your iCOM display.
User Humidity Setpoint Options
Dew Point Setpoint
Desired dew point, based on actual return air temperature and humidity, by adding moisture to or removing moisture
from the air.
Humidity Control Sensor
Selects sensor used when calculating relative humidity.
Humidity Control Type
Control when staging humidification operations. Valid values are:
•Relative: Percent of humidification/dehumidification is determined by the difference between the humidity
sensor reading and the humidity setpoint.
•Compensated: Percent of humidification/dehumidification is determined by considering the actual deviation
from the temperature setpoint and adjusts the humidity setpoint accordingly. The recalculated humidity
setpoint displays on the screen.
•Predictive: Percent of humidification/dehumidification is determined by considering the actual deviation from
the temperature setpoint and adjusts the humidity sensor reading accordingly. The adjusted humidity sensor
reading displays on the screen.
•Dew Point: Percent of humidification/dehumidification is determined by the difference between the dew point
calculated from the humidity sensor reading and the dew point setpoint.
2 User Operation 13

Humidity Setpoint
Desired humidity level by adding moisture to or removing moisture from the air.
Humidity Setpoint 2
Alternate setpoint activated by customer input (remote alarm device). When customer input connection is 2nd
Setpoint, this value becomes the active humidity setpoint.
2.1.2 Editing Temperature Setpoints
1. Touch , then > Setpoints >Temperature Control. The TEMPERATURE CONTROL secondary panel
opens.
2. Refer to User Temperature Setpoint Options below, Temperature Control—TemperatureSetpointsandCooling
Operation on page21, and Compressor Control by Cooling Requirement on page24 to adjust the setpoint
options, then touch Save. The setpoint is updated.
•Touch Cancel to discard the changes.
NOTE: Depending on the type of thermal management unit, included components, and control settings of your
system, all of the options listed may not be available on your iCOM display.
User Temperature Setpoint Options
2nd Temperature Setpoint
Alternate setpoint activated by customer input (remote alarm device). When customer input connection is 2nd
Setpoint, this value becomes the active temperature setpoint.
Optimized Aisle Enabled
Read-only. Indicates that iCOM is configured for optimized aisle operation. See Teamwork Mode3—Optimized Aisle
Operation on page66.
Temperature Control Sensor
Selects sensor that controls cooling. Values are:
•Supply Sensor: Temperature control is based on maintaining the temperature of the discharge air from the
cooling unit. See Supply Sensors on page76.
•Remote Sensor: Temperature control is based on the temperature reading(s) from wired remote sensor(s). See
Wired Remote Sensors on page73.
•Return Sensor: Temperature control is based on maintaining the temperature of the air returning to the cooling
unit.
Vertiv | Liebert® iCOMInstaller/User Guide
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