Liebert iCOM-S™
GUIDE SPECIFICATIONS
1.0 GENERAL
1.1 SUMMARY
The iCOM-S is designed to efficiently provide Data Center thermal monitoring and
control from the "Site To Sensor" level by fully integrating wired and wireless sensors.
The system offers easily deployed visibility to the customer and opportunity for increased
energy efficiency to the Liebert iCOM control platform.
The iCOM-S can be installed on traditional Liebert Unit applications using wired sensors
providing increased visibility and data metrics not previously available. Wireless
temperature sensors can be seamlessly added to offer even more insight into the data
center while offering reduced installation cost and increased flexibility not previously
seen. No other system integrates wired and wireless sensors so seamlessly into thermal
HVAC system control.
1.2 HIGHLY INTEGRATED
The iCOM-S shall be a highly efficient approach to controlling Liebert Thermal
Management Units directly from collected wireless and wired sensor data. All
components of the iCOM-S solution shall be provided by Emerson for a fully integrated
system. Wired or wireless temperature sensor data can be used interchangeably when
providing visual information to the user or internal information for the controls system.
Any temperature sensor being read can be used for control of any unit or unit iCOM
group.
1.3 VALUABLE VISUALIZATION
The iCOM-S shall provide simple and easy to understand floor plan views of the
monitored environment with representative dynamic icons that provide the end user
valuable understanding of the thermal environment being monitored.
1.4 SECURITY
The iCOM-S wireless components shall implement industry tested and validated security
methods through the use of 128 bit AES encryption, self-healing mesh/node networks,
channel hopping, multiple level one-to-one security codes, WiFi coexistence, and full
interference testing to ensure clear and concise communication without the fear of
wireless penetration.
1.5 POWER
The wireless radios used in the iCOM-S solution shall use an integrated wireless sensor
battery providing at least 4 years of battery life. Customers have an option for locally
powering the wireless radios via non-communicating micro-USB to USB cable to
maintain the wireless communication benefit of reduced installation and deployment
costs. The iCOM-S provides an integrated 24VDC power source for locally powering the
wireless gateways to reduce the need for running electrical connections in the field. The
iCOM-S is powered via a standard 110/120 VAC (60 Hz) wall outlet connection for easy
and cost effective deployment
SL-18846_Rev0_8-15
1
Guide Specifications
1.6 DESIGN REQUIREMENTS
ICOM-S
The iCOM-S control system shall be factory-assembled. Standard 60Hz units are ETL
Tested and conforms to ANSI/UL standard 916 and certified to CAN/CSA standard
C22.2 No. 205-12.
The iCOM-S enclosure shall be designed to operate in the following environments:
Operation/Control Ambient Dry Bulb Temperature Range: 0°C to 40°C (32°F to 104°F)
Relative Humidity Range: 20% to 80% (non-condensing)
Wireless Sensors
The wireless radio enclosure shall be rated for NEMA 1 (U.S.) and IP-20 (international)
and shall be ROHS compliant. The wireless radio with integrated sensor string shall be
designed to operate, precisely control, and be stored in the following environments:
Operation/Control Ambient Dry Bulb Temperature Range: 0°C to 65°C (32°F to 149°F)
Relative Humidity Range: 10% to 90% (non-condensing)
Operation/Control Altitude: Up to 2,000 meters (~6,500 ft.)
Wireless Gateway
EMC performance shall comply with EN61326-1:2006
The wireless gateway shall be designed to operate in the following environments:
Ambient Dry Bulb Temperature Range: -40°C to 75°C (-40°F to 167°F)
Relative Humidity Range: 0% to 100% (non-condensing)
1.7 SUBMITTALS
Submittals shall be provided with the proposal and shall include Dimensional Data;
Electrical and Networking Connection Drawings.
2.0 PRODUCT
2.1 ICOM-S
2.1.1 System Description
The iCOM-S shall provide an integrated interface between the thermal management
units in an Optimized Aisle form of control, wired sensors, wireless architecture, and
software allowing a seamless single interface to visualize current and historical data see
how changes made in the data center effect the desired goals of the data center. The
Liebert Thermal Management Unit iCOM control software is compatible specifically for
iCOM-S applications.
2.1.2 Controls
The Liebert Thermal Management Units shall be controlled locally by the Liebert unit
iCOM controller to utilize enhanced protection and operation algorithms on the unit level
while incorporating control signals from the iCOM-S to enhance optimization and energy
efficiency on a supervisory system level. The iCOM-S shall connect directly into the local
unit level iCOM control board without the need for additional monitoring/communication
cards.
The Liebert Thermal Management Units shall have variable fan speed (centrifugal fan
SL-18846_Rev0_8-15
2
Guide Specifications
with VFD or EC fan(s)) to realize optimum efficiency and control benefits.
The Liebert Thermal Management Units shall be configured to operate in an Optimized
Aisle (Teamwork mode 3) form of control in which a supply air sensor will control the
cooling capacity (valve and/or compressor) and the remote wired/wireless sensors will
control the unit fan speed. This approach shall best match the locally specific IT
equipment’s delta T (CFM/kW) requirement based on the dynamic IT operation and
infrastructure. If employed, static pressure sensors shall be utilized in the discharge
plenum to maintain a minimum static pressure/fan speed.
The iCOM-S shall utilize wired sensors connected to Liebert Thermal Management Units
or wireless temperature sensors communicating through wireless gateways for purposes
of control.
In the event of an iCOM-S outage, the connected iCOM controlled thermal management
units shall fall back to their standard operation utilizing their locally wired remote
temperature sensors. If the remote temperature sensors fail in this scenario, the thermal
management units shall fall back to internal temperature sensor operation.
2.1.3 Cabinet Construction
2.1.3.1 Panels The iCOM-S enclosure shall be powder-coated anodized aluminum.
2.1.3.2 Display
The iCOM-S shall provide a 21.5” High Definition (1920 x 1080, 16:9) multi-touch
capacitive screen for user interaction
2.1.3.3 Ports
The iCOM-S shall provide
 47 available Ethernet (RJ45) ports accessible from bottom of the enclosure
 1 x HDMI output port accessible from bottom of panel for connection to remote
HD display or monitor for screen replication for the purpose of displaying
information for viewing at a distance.
 2 x USB ports accessible from bottom of panel for the purpose of:
o Connecting external mouse
o Connecting external keyboard
o Connecting wireless sensor configuration cable (for manual sensor joining)
o Connecting customer supplied USB memory sticks or hard drives for export
of system configuration file, full system backup with data, trending data, or graphics
The iCOM-S enclosure shall be designed for indoor use only using the factory provided
mounting bracket in either a wall mount or desk mount configuration.
2.1.4 Electrical Connections
2.1.4.1 iCOM-S
The iCOM-S shall be powered via locking Power Cable (5-15P) wall outlet plug for
110/120VAC /60 Hz source.
2.1.4.2 Wireless Gateways
The iCOM-S enclosure shall provide 24VDC screw terminal phoenix connector for
remote powering of up to 16 Emerson approved/supplied wireless gateways
SL-18846_Rev0_8-15
3
Guide Specifications
2.1.5 Software
2.1.5.1 iCOM-S Software
The iCOM-S Software shall provide the following:
User Profiles
 Add new users with 1 of 3 main levels of system access.
Built-In Wizards
 Input a unit to the iCOM-S software using drop down selections to pre-populate
performance, dimensional, and communication data required.
Floor Plan View
 Shall be able to quickly identify where urgent issues exist.
 Shall be able to drill down from the site to the room to the device to the point
level.
 Equipment shall be clickable on floor plan to drill down to more information.
Data/Trends
 Shall track key data and calculated metrics from “Site To Sensor”.
 View important properties of HVAC units.
 Altitude specific capacity shall be calculated bringing more accuracy to trends.
 iCOM-S shall monitor, display, and trend important properties and metrics about
the site, room, and equipment. These shall include:
 Site Level – [metrics]
o Site Net Sensible kW Capacity
o Site Average Cold Aisle Temperature
o % of Maximum CFM Used on Site
o % of Maximum Capacity Used
o Total Site CFM, Site HVAC CFM/kW
o Site CFM Available
o Average Hot Aisle Temperature
o Site Net Sensible Mechanical Efficiency and Site HVAC Unit Power for
units are equipped with power metering connected through the unit’s iCOM controller.

Room Level – [metrics]
o Room Net Sensible kW Capacity
o Room Average Cold Aisle Temperature
o % of Maximum CFM Used
o % of Maximum Capacity Used
o Total Room CFM
o Room HVAC CFM/kW
o Room CFM Available
o Room Avg. Unit Supply Temperature
o Room Avg. Unit Return Temperature
o Room Avg. Unit dT
o Room Average Hot Aisle Temperature.
o Room Net Sensible Mechanical Efficiency and Room HVAC Unit Power for
units are equipped with power metering connected through the unit’s iCOM controller.

Unit Level – [metrics]
SL-18846_Rev0_8-15
4
Guide Specifications
o Unit Net Sensible kW Capacity
o % of Maximum Capacity Used
o Unit CFM
o % of Maximum CFM Used
o Unit CFM/kW
o Unit Net Sensible Mechanical Efficiency for units are equipped with power
metering connected through the unit’s iCOM controller.
o Component Status
o Fan Speed
o Cooling
o Free Cooling/Economization Status
Gateway/Radio/Sensor Level
 Radio Batteries and every wireless temperature value
Alarm Management
 Shall set the temperature and battery thresholds on any sensor value across
entire system with minimal screen touches.
 Shall notify of critical, warning, and message alerts directly to user allowing them
to navigate to the alert screen for direct viewing of object of interest through pop
up notifications.
Control
 Shall have user-defined method of fan speed control with regards to Hot Spot
protection preference.
 Shall change Remote and Supply Air set points of all the units on a common
iCOM group at once or one at a time.
 The logic shall be incorporated visually to show current set points vs. requested
to see if external system has modified set points.
 Software shall support connection up to 100 units and 16 gateways (fully
populated with 100 radios per gateway with 3 temperature sensors per radio)
with up to 31 units/iCOM group.
 Shall provide support for iCOM features such as lead/lag, cascade, supply
compensation, etc.
 Redundant sensor failover modes protect the equipment during downtime.
Search
 Shall have the ability to search the system database through user-defined
queries.
 Shall be able to filter and text search capable.
Data Backup/Export
 Shall have the ability to export the entire system configuration or complete an
entire system backup including settings, users, system layouts, and all trended
data in database.
 Shall be capable of import modified configuration files to visually update room
layouts and sensor settings.
 Shall be capable of a complete system backup.
SL-18846_Rev0_8-15
5
Guide Specifications

Shall be capable of saving either the configuration or backup file to a usersupplied external hard drive (via USB port on iCOM-S enclosure).
Reporting
 Shall be capable of exporting any data read and/or trended to *.csv file.
 Shall have Print Screen button for capturing any screen in a high resolution
vector based graphic.
Connectivity
 The database shall be accessible through public Read Only API via SOAP/Rest
calls.
Communication to Units
 The iCOM-S shall use Liebert proprietary protocols affording data, features, and
visibility into the unit iCOM control boards.
2.1.5.2 iCOM-S Room Editor Software
The iCOM-S Room Editor software shall be capable of the following:
Floor Plan Import
 Imported background images used shall be in high resolution *.png, *.jpeg, or
*.bmp formats.
 Multiple room editing.
Drag and Drop Mentality
 Equipment not located on floor plan but bound to trending data shall be
presented to the user for dragging onto floor plan.
 Dimensions and locations shall be visually modified without having to type in any
values.
Multiple Object Manipulation
 Allow user to “lasso” multiple pieces of equipment such as to modify properties,
placement/location, associations, or alignment including but not limited to any
edge, middle/center, or distribution of said objects to reduce time in system setup
and visual operation.
Visual
 Allow rotation, edge softening, and multiple color states to properly reflect
different objects and hierarchical relationships to speed up installation and
configuration time of deployment.
2.1.6 Mounting
The iCOM-S enclosure shall be designed for indoor use only using the mounting bracket
in either a wall mount or desk mount configuration. The iCOM-S shall be installed into
mounting bracket and locked into place via tray placement and two thumbscrews.
2.1.6.1 Mounting Bracket
The iCOM-S mounting bracket shall be attached to the wall via 4 screws/bolts. Mounting
SL-18846_Rev0_8-15
6
Guide Specifications
posts shall be standard stud centered at 16” for mounting to wall. The mounting bracket
shall have 2” conduit knockouts on the sides. The mounting bracket shall provide a slide
out din rail bar via two thumb screws to support up to 10 wireless gateways.The bracket
and front cover plate shall be powder-coated black.
2.2 WIRELESS ARCHITECTURE
2.2.1 System Description
The wireless system shall utilize a self healing wireless mesh network between the
wireless gateway and the wireless radios to provide a comprehensive view of the
temperature of an area.
2.2.2 Wireless Sensor Radios
The wireless radios used shall be designed specifically for data center applications with
regards to hardware design, firmware programming, and data communication properties.
The thermal response and polling rates of data communication shall be sufficient in
preventing room oscillations while maintaining the radio battery life. The wireless radios
shall be black in color.
Each wireless radio shall have a unique ID.
Wireless sensor deployment shall not require RF survey; shall be easily deployable
using network credentials.
Each wireless radio shall report sensor data and battery status at minimum
2.2.2.1 Wireless Mounting
The standard wireless radio utilized with the iCOM-S shall include an integrated sensor
string to simplify installation.
The sensor string design shall not prohibit installation according to ASHRAE guidelines.
Mounting hardware shall be provided with every wireless radio to provide quick and
secure mounting of the node and sensor cable.
Mounting hardware shall allow node enclosure to be mounted on a rack door with
minimal impedance to rack air flow.
Hardware shall include at minimum tie wraps and/or hook and loop fasteners.
2.2.2.2 Wireless Radio Power
The wireless radio battery life shall be a minimum of 4 years with a 32 second burst rate,
two descendents and a path stability of 80%. The wireless radios shall also have the
capability of being powered locally via micro-USB power source while still being able to
communicate wirelessly to the gateway.
2.2.2.3 Wireless Radio Communication
The wireless radio communications shall be a self-forming and self healing mesh. All
wireless radios shall be available to act as a wireless repeater.
2.2.3 Wireless Gateways
The wireless gateway shall process wireless radio sensor information for the purpose of
SL-18846_Rev0_8-15
7
Guide Specifications
communication and security to provide enhanced unit control and information that will be
used in thermal visualization. The wireless gateway shall be constructed of 0.70 lb
Polycarbonate housing may be mounted on Top hat rail EN 50022. The gateway
antenna shall be a 2 dBi rubber dipole with SMA male connector and shall support
external antenna options. The wireless gateway shall be able to support at maximum
100 wireless radios (300 temperature sensors and 100 battery values)
2.2.3.1 Wireless Gateway Power
The input voltage shall be 10.5-30 VDC.
The power consumption shall be 3 Watts and be supported via 24VDC transformer
power connection on bottom of iCOM-S enclosure.
The radio frequency power output from Antenna is a maximum of 10 mW (10 dBm)
EIRP.
2.2.3.2 Wireless Gateway Communication
The wireless gateway shall provide two Ethernet ports for dual communication paths.
The iCOM-S shall use one of these ports. The other port can be utilized by monitoring
solutions including Liebert SiteLink/SiteScan, Liebert Trellis, or 3rd party BMS system.
Communication with the iCOM-S
The communication protocol to be used between the wireless gateway and iCOM-S shall
be WirelessHART (IEC 62591). WirelessHART networking technology encompasses the
following features
 AES-128 bit encryption (NIST approved encryption – FIPS140 compliance)
 Third party security verification including Achilles and FIPS197
 Conforms to IEEE 802.15.4 Standard which includes Coexistence with 802.11
(Wi-Fi)
 Direct sequence spread spectrum (DSSS) technology delivers high data
reliability
 2.4 GHz ISM band sliced into 15 radio-channels
 Automatically rotating Encryption Keys
 4 types of key validation for information transmission
 Provides a wireless mesh network where each radio can function as a router for
other devices
 Wireless radios only have to communicate to nearest radio saving battery
 Self healing network with redundant data paths that can adapt to changing RF
environments
 Automatic real time optimizing network settings to maintain desired network
performance levels
 Channel hopping, multi-path routing, and anti-jamming technologies to prevent
network noise
 Hop-By-Hop and End-To-End Validation and Authentication
 Prevents network wide access even if individual network device is somehow
compromised
 Malware transmission will be prevented since it is not a Routing Protocol
SL-18846_Rev0_8-15
8
Guide Specifications
Communication Protocols with 3rd Party BMS systems
Isolated RS-485
 2-wire communication link for Modbus RTU multi-drop connections
 Baud rate: 57600, 38400, 19200, or 9600
 Protocol: Modbus RTU
 Wiring: Single twisted shielded pair, 18 AWG, wiring distance is ~4,000 ft. (1,524
m)
Ethernet
 10/100base-TX Ethernet communication port
 Protocols: Modbus TCP, OPC, Ethernet/IP, HART-IP, https (for web interface)
 Wiring: Cat5E shielded cable, wiring distance 328 ft. (100 m)
Modbus
 Supports Modbus RTU and Modbus TCP with 32-bit floating point values,
integers and scaled integers
 Modbus Registers are user-specified
OPC

OPC server supports OPC DA v2, v3
EtherNet/IP
 Supports EtherNet/IP protocol with 32 bit Floating Point values and integers.
EtherNet/IP Assembly Input-Output instances are user configurable. EtherNet/IP
specifications are managed and distributed by ODVA.
2.2.3.3 Remote Gateway Mounting Kit
The Remote Gateway Mounting Kit shall provide a means to remotely mount one (1)
gateway to a wall by means of a din rail. The Remote Gateway Mounting Kit shall be
powered via locking Power Cable (5-15P) wall outlet plug for 110/120VAC /60 Hz
source.
2.3 WIRED ARCHITECTURE
2.3.1 System Description
The wired system shall utilize 2-T rack temperature sensors to provide a comprehensive
view of the temperature of an area.
2.3.1.1 2-T Rack Temperature Sensors
The 2-T rack temperature sensors shall consist of a vented case with two temperature
probes. The sensors shall provide real-time, direct feedback to the thermal management
unit to optimize the amount of cooling and airflow provided.
2.3.1.2 2-T Rack Sensor Mounting
Mounting hardware shall be provided with every 2-T rack temperature sensor to provide
quick and secure mounting of the node and sensor cable. Mounting hardware shall allow
node enclosure to be mounted on a rack door with minimal impedance to rack air flow.
Hardware shall include at minimum tie wraps fasteners.
2.3.1.3 2-T Rack Sensor Communication
SL-18846_Rev0_8-15
9
Guide Specifications
The sensor network shall consists of one CAN wire leaving the cooling unit and
connecting to a 2T rack temperature sensor. Each remaining 2T rack temperature
sensors are connected to the previous sensor.
3.0 EXECUTION
3.1 GENERAL
3.1.1 Install iCOM-S in accordance with manufacturer’s installation instructions. Install
units plumb and level, firmly anchored in locations indicated and maintain manufacturer’s
recommended clearances.
3.2 ELECTRICAL WIRING
3.2.1 Install and connect electrical devices furnished by manufacturer but not specified
to be factory-mounted. Furnish copy of manufacturer’s electrical connection diagram
submittal to electrical contractor.
3.3 FIELD QUALITY CONTROL
3.3.1 Start up environmental control units in accordance with manufacturer's startup
instructions. Test controls and demonstrate compliance with requirements.
3.4 QUALITY ASSURANCE
3.4.1 The specified system shall be factory-tested before shipment. The system shall be
designed and manufactured according to world-class quality standards. The
manufacturer shall be ISO 9001 certified.
SL-18846_Rev0_8-15
10
Guide Specifications