LG MultiSITE MS8250 User manual

USER MANUAL
MultiSITE™ MS8250 VAV Room Controller
MS8250
Model No. VUCQMS8250
Variable Air Volume (VAV) Controller

The instructions included in this manual must be followed to prevent prod-
uct malfunction, property damage, injury, or death to the user or other
people. Incorrect operation due to ignoring any instructions will cause
harm or damage. A summary of safety precautions begins on page 4.
Do not throw away, destroy, or lose this manual.
Please read carefully and store in a safe place for future reference.
Content familiarity required for proper installation.
For more technical materials such as submittals, engineering
databooks, and catalogs, visit www.lghvac.com.
For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice.
©LG Electronics U.S.A., Inc.
This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc.
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and
other materials are the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc., only in confidence.

3
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
User Manual
TABLE OF CONTENTS
Safety Precautions ............................................................................. 4-5
Standards and Certications................................................................ 6
Before Beginning................................................................................... 7
Introduction............................................................................................ 8
Disclaimer .............................................................................................. 9
HMI Display and Set Up ................................................................. 10-12
Customized Screens ...................................................................... 13-17
User HMI for Hospitality..................................................................... 13
User HMI for Commercial.................................................................. 14
User HMI Show / Hide Options and System Mode............................ 15
Setpoint Adjustment / Other Functions.............................................. 16
Customizable Color Options.............................................................. 17
User and Integrator Screens .............................................................. 18
Network Screens ............................................................................ 19-31
Network Settings ............................................................................... 19
ZigBee Network 1 / 2.................................................................... 20-21
ZigBee Network 2 / 2......................................................................... 22
BACnet Network Settings.................................................................. 23
BACnet Instance Number.................................................................. 24
Modbus Network Settings.................................................................. 25
Wi-Fi Network 1 / 5............................................................................ 26
Wi-Fi Network 2 / 5............................................................................ 27
Wi-Fi Network 3 / 5............................................................................ 28
Wi-Fi Network 4 / 5............................................................................ 29
Wi-Fi Network 5 / 5............................................................................ 30
Wi-Fi BACnet Network Settings......................................................... 31
Conguration Screens...................................................................32-42
Conguration 1 / 9 ............................................................................. 32
Conguration 2 / 9 ............................................................................. 33
Conguration 3 / 9 ............................................................................. 34
Conguration 4 / 9 ............................................................................. 35
Conguration 5 / 9 ........................................................................ 36-37
Conguration 6 / 9 ............................................................................. 38
Conguration 7 / 9 ............................................................................. 39
Conguration 8 / 9 ........................................................................ 40-41
Conguration 9 / 9 ............................................................................. 42
Balancing ........................................................................................ 43-48
Pressure Independent .................................................................. 43-46
Pressure Dependent..................................................................... 47-48
Setpoints Screens .......................................................................... 49-50
Setpoints 1 / 2.................................................................................... 49
Setpoints 2 / 2.................................................................................... 50
Display Screens.............................................................................. 51-53
Display Screen 1 / 3 .......................................................................... 51
Display Screen 2 / 3 .......................................................................... 52
Display Screen 3 / 3 .......................................................................... 53
Service View Screens..................................................................... 54-62
Service View Screen 1 / 9 ................................................................. 54
Service View Screen 2 / 9 ................................................................. 55
Service View Screen 3 / 9 ................................................................. 56
Service View Screen 4 / 9 ................................................................. 57
Service View Screen 5 / 9 ................................................................. 58
Service View Screen 6 / 9 ................................................................. 59
Service View Screen 7 / 9 ................................................................. 60
Service View Screen 8 / 9 ................................................................. 61
Service View Screen 9 / 9 ................................................................. 62
Test Outputs Screens..................................................................... 63-64
Language Selection Screens.............................................................. 65
Language Selection Screens 1 / 4 to 4 / 4......................................... 65
Schedule Screens........................................................................... 66-69
Clock - Schedule Menu ..................................................................... 66
Clock.................................................................................................. 67
Schedule............................................................................................ 68
Options .............................................................................................. 69
ADR Screen.......................................................................................... 70
Wireless Screens............................................................................ 71-77
Wireless Menu Options ..................................................................... 71
Ecosystem Settings........................................................................... 72
Device X ....................................................................................... 73-74
Device Groups................................................................................... 75
Temperature Alarms Conguration .................................................... 76
Alarms ............................................................................................... 77
LUA Screens ................................................................................... 78-79
LUA Settings...................................................................................... 78
LUA Generic Parameters................................................................... 79

4
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
4
SAFETY PRECAUTIONS
TABLE OF SYMBOLS
DANGER
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
This symbol indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action that should not be performed.
The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incor-
rect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described
below.
DANGER
Do not use or store ammable gas or combustibles near
the unit.
There is risk of re, explosion, and physical injury or death.
Disconnect power before installing or servicing the unit.
There is risk of physical injury or death due to electric shock.
Do not touch any exposed unit wiring, terminals, or other
electrical components with tools or exposed skin. Only quali-
ed technicians should install, use, or remove this unit.
Improper installation or use may result in re, explosion, electric shock,
physical injury and/or death.
WARNING
The information contained in this manual is intended for use
by an industry-qualied, experienced, trained electrician
familiar with local, national, and regional codes and who is
equipped with the proper tools and test instruments.
Failure to carefully read and follow all instructions will result in personal
injury or death.
All electric work must be performed by a licensed electrician
and conform to local building codes or, in the absence of lo-
cal codes, with the National Electrical Code, and the instruc-
tions given in this manual.
If the power source capacity is inadequate or the electric work is not
performed properly, it will result in re, electric shock, physical injury or
death.
Do not change the settings of the protection devices.
If the protection device is shorted and forced to operate improperly, or
parts other than those specied by LG are used, there is risk of re,
electric shock, explosion, and physical injury or death.
Discharge yourself correctly before handling and installing
the controller.
There is risk of electric shock and physical injury or death.
Do not touch the unit with wet hands.
There is risk of re, electric shock, physical injury, and/or death.
This manual provides details on configuring the LG MultiSITE MS8000 Series Room Controllers to monitor and control LG HVAC equipment
(Model Number: VUCQMS8250).
Refer to the Installation Manual for installation and mounting instructions of the controllers.

5
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
User Manual
5
SAFETY PRECAUTIONS
WARNING
Use a soft, pre-moistened lint-free cloth for cleaning.
Avoid getting moisture in openings.
If moisture accesses the electrical components of the controller, there is
risk of re, electric shock, and physical injury or death.
Do not use caustic / corrosive products, ammonia, sol-
vents or any cleaning product containing alcohol or grit.
There is risk of re, electric shock, and physical injury or death.
Do not drop or crush the controller, or allow it to come
into contact with liquids.
There is risk of re, electric shock, and physical injury or death.
Do not spray anything directly on the controller or use
compressed air.
There is risk of re, electric shock, and physical injury or death.
Never use paint on the controller.
If moisture accesses the electrical components of the controller, there is
risk of re, electric shock, and physical injury or death.
Do not use a damaged device (such as one with a cracked
screen).
There is risk of re, electric shock, and physical injury or death.
Wear protective gloves when handling equipment.
Sharp edges cause personal injury.
CAUTION
Disconnect power before installing or servicing the unit.
There is risk of equipment damage and degraded performance.
Do not allow water, dirt, or animals to enter the controller.
There is risk of unit failure or degraded performance.
Do not spill water or other liquid on the inside of the con-
troller. Do not drop the controller into water. If the unit is
immersed in water or other liquid, contact your local autho-
rized LG distributor for support.
There is risk of unit failure or degraded performance.
This device is only intended for use as a monitoring and
control device. It is not a safety device. Do not use it for
any other purpose.
Tampering with the devices or unintended application of the devices will
result in a void of warranty. There also is risk of data loss or equipment
damage.
The controller is not compatible with a Power-Over-Ethernet
(POE) network. Do not connect the controller on a network
segment that carries power.
The unit may fail.
Use a soft, pre-moistened lint-free cloth for cleaning.
Avoid getting moisture in openings.
There is risk of equipment damage, and will void the manufacturer's
warranty.
Do not spray anything directly on the controller or use
compressed air.
There is risk of equipment damage, and it will void the manufacturer's
warranty.
Do not use caustic / corrosive products, ammonia, sol-
vents or any cleaning product containing alcohol or grit.
There is risk of equipment damage, and it will void the manufacturer's
warranty.
Never use tools directly on the touchscreen.
There is risk of damage to the controller screen, and it will void the
manufacturer's warranty.
Never use paint on the controller.
There is risk of equipment damage, and it will void the manufacturer's
warranty.
Do not drop or crush the controller, or allow it to come
into contact with liquids.
There is risk of equipment damage, and it will void the manufacturer's
warranty.
Do not use a damaged device (such as one with a cracked
screen).
Performance can be affected if the glass on the screen is broken, and it
will void the manufacturer's warranty.

6
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
STANDARDS AND CERTIFICATIONS
Safety Standards
• LV Directive 2014 / 35 / EU
• UL 60730-2-9
• UL 60730-2-13
• CAN / CSA-E60730-2-9
• IEC / EN 60730-1
• IEC / EN 60730-2-9
• IEC / EN 60730-2-13
EMC Standards
• EMC Directive 2014 / 30 / EU
• FCC 15 Subpart B
• ICES-003
• IEC / EN 60730-1
• IEC / EN 60730-2-9
• IEC / EN 60730-2-13
Radio Standards (Wireless Models)
• RE Directive 2014 / 53 / EU
• ETSI EN 300 328 V2.1.1
• ETSI EN 301 489-1 V1.9.2
• ETSI EN 301 489-17 V2.2.1
• FCC Part 15 Subpart C
• RSS 247
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1)
THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RE-
SPONSIBLE FOR COMPLIANCE. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses
and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions:
1. This device may not cause interference; and
2. This device must accept any interference, including interference that may cause undesired operation of the device.
In order to comply with FCC/ISED RF Exposure requirements, this device must be installed to provide at least 7-7/8 inches (20cm) separation
from the human body at all times.
Check with your local government
for instruction on disposal of these
products.
Standards and Certifications

7
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
BEFORE BEGINNING
Before Beginning
Loss of Control
• The designer of any control scheme must consider the potential failure modes of control paths and, for certain critical control functions,
provide a means to achieve a safe state during and after a path failure. Examples of critical control functions are emergency stop and over
travel stop. Failure to follow instructions will result in operation malfunction.
• Separate or redundant control paths must be provided for critical control functions. Failure to follow instructions will result in operation
malfunction.
• System control paths may include communication links. Consideration must be given to the implications of anticipated transmission delays
or failures of the link.1Failure to follow instructions will result in operation malfunction.
• Each implementation of equipment utilizing communication links must be individually and thoroughly tested for proper operation before be-
ing placed into service. Failure to follow instructions will result in operation malfunction.
1For additional information about anticipated transmission delays or failures of the link, refer to NEMA ICS 1.1 (latest edition), Safety Guidelines for
the Application, Installation, and Maintenance of Solid State Control or its equivalent.
California Proposition 65
This product can expose you to chemicals including Lead and Bisphenol A (BPA), which are known to the State of California to cause cancer and
birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov. Failure to follow these instructions can result in birth
defects or other reproductive harm.
Electrostatic Discharge / Static-Sensitive Components
Circuit boards and option cards can be damaged by static electricity. Observe the following precautions when handling static-sensitive components
such as controller circuit boards or testing components. Failure to follow these instructions can result in equipment damage.
• Keep static-producing material such as plastic, upholstery, and carpeting out of the immediate work area.
• Store static-sensitive components in protective packaging when these are not installed in the drive.
• When handling a static-sensitive component, wear a conductive wrist strap connected to the component or drive through a minimum of 1
megohm resistance.
• Avoid touching exposed conductors and components leads with skin or clothing.

8
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
INTRODUCTION
Introduction
This manual shows the installation instructions for the LG MultiSITE MS8250 Variable Air Volume (VAV) Room Controller (Firmware v2.4).
MS8250 Variable Air Volume (VAV) Room Controllers
For Commercial and high end hospitality markets. The MS8250 is a low voltage variable air volume and zone Room Controller.
Features
• Configurable to support damper control for Pressure Independent (PI) and Pressure Dependent (PD) VAV systems.
• Embedded local configuration utility using the touch screen allowing for simplified configuration, sequence selection, re-initialization, setting
of setpoints and control of display settings.
• Customizable color digital touch screen interface with multi-language support.
• BACnet®(Available BACnet options listed under Connectivity) or Modbus®.*
• On-Board ZigBee®Communication Module.
• Automatic Demand Response (ADR) used to reduce energy load when electric grid contingencies threaten supply-demand balance.
• Custom LUA script can be uploaded to the VAV Room Controller.
• Passwords can be set to prevent unauthorized user access to main screen adjustments and / or configuration menu parameters.
• Senses both Room Temperature and Relative Humidity.
• Configurable temporary or permanent local override setpoints.
• Local or remote override during unoccupied mode.
• Adjustable local unoccupied heating and cooling setpoint limits, maximum heating and minimum cooling limits, as well as adjustable dead
and proportional bands.
• Remote night set back.
• Advanced PIR Occupancy Functions generate automatic energy savings during occupied and unoccupied periods without sacrificing
comfort.
BACnet®is a registered trademark of ASHRAE.
Modbus®is a registered trademark of Schneider Electric USA, Inc.
ZigBee®is a registered trademark of the ZigBee Alliance, Inc.

9
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Disclaimer
Standby Screen
The Room Controllers incorporate TFT-type LCD technology, and therefore, necessary precautions are required to prevent the phenomenon
of image retention (residual image) from occurring.
Image retention may occur when a static image is displayed on the screen for a prolonged period. This can cause a faint outline of the image
to remain visible on the screen when the screen is changed via the user menu, or a different image is uploaded and selected to be displayed.
To minimize and prevent image retention, it is recommended to select the “Screen Save” setting on the “Standby” screen selection from the
setup menu “Display 1 / 2”. This setting switches the display during periods of inactivity from the “Home Screen”.
It is recommended to use a black or medium gray image, or one with light color contrasts as the screen saver to prevent this phenomenon
from occurring. If the display still exhibits this phenomenon, loading an all-black or all-medium gray image as the screen saver and displaying
it for upwards of five (5) hours continuously minimizes this effect.
WARNING
Avoid placing the controller in poorly ventilated areas, or in areas that may create excess heat around the display. Poorly ventilated areas or
areas that create excessive heat could generate short circuiting, which will lead to electrical shock, re, physical injury and / or death.
Avoid placing the controller in poorly ventilated areas, or in areas that may create excess heat around the display. Poorly ventilated areas or
areas that create excessive heat could generate short circuiting, which will lead to product damage.
DISCLAIMER

10
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Human Machine Interface (HMI) Display
The below shows a typical user interface for the hospitality industry. The User HMI is configurable and allows display functions such as Date,
Time, Humidity, Outdoor Temperature, and Setpoint to be enabled or disabled by setting various parameters.
HMI DISPLAY AND SET UP
Figure 1: Typical Hospitality Industry User Interface.
Time
Language (Select Preferred Language)
Unoccupied Mode Override
Date
Occupancy Status
Room Indoor
Temperature
Room Indoor
Humidity
Outdoor Temperature
Up Arrow
(Increase Temperature Setpoint)
Actual Setpoint
Down Arrow
(Decrease Temperature Setpoint)
Help (Enter Help Screen)
System Status

11
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Enter Set-up Screen
HMI DISPLAY AND SET UP
Figure 2: Enter Set-up Screen Display.
Figure 3: Set-up Screen Display 1 / 2.
Touch and hold this point for three
(3) seconds to enter set-up mode.
If a conguration / installer password is activated to prevent unauthorized access
to the conguration menu parameters, a password entry prompt appears before
proceeding.
1/2 Setup
Network
Configuration
Balancing
Setpoints
Display
Service View
BACnet MS/TP, Modbus, and ZigBee and Wi-Fi Network Settings
network settings (ZigBee network settings appear only if ZigBee
feature is available).
Enter Parameter Configuration Menu
Enter Balancing Settings
Enter Display Settings
Enter Setpoints Settings
Enter Status and Service View

12
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
2/2 Setup
Test Outputs
Language Selection
Clock - Schedule
ADR
Wireless
Lua
Set Clock, Schedule and Occupancy
LUA Scripting (Shows Only if LUA Script is Uploaded)
Wireless Ecosystem Settings (shows only if ZigBee feature is available)
Test Output Settings
HMI DISPLAY AND SET UP
Figure 4: Set-up Screen Display 2 / 2.
Select Language
Automatic Demand Response

13
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
2019.08.19 12:54 PM
F
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F
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F
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F
• Setpoint adjustment
• System mode setting
• Local unit scale adjustment
• Local user language
• User help menu
• Setpoint adjustment
• System mode setting
• User help menu
• Setpoint adjustment
• Local unit scale adjustment
• Local user language
• User help menu
• Setpoint adjustment
• User help menu
Parameters are model dependent and may not appear on certain models.
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• Fully locked interface with no
user settings
• Setpoint adjustment
• System mode setting
• User help menu
• Setpoint adjustment
• System mode setting
• Local unit scale adjustment
• User help menu
Hospitality 0 Hospitality 1 Hospitality 2 Hospitality 3
Hospitality 4 Hospitality 5 Hospitality 6
User HMI for Hospitality
CUSTOMIZED SCREENS

14
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
2019.08.19 12:54 PM
F
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F
• Setpoint adjustment
• Unoccupied mode override
• Local user language
• User help menu
• Setpoint adjustment
• Unoccupied mode override
• User help menu
• Unoccupied mode override
Commercial 8 Commercial 9 Commercial 10
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F
• Setpoint adjustment
• System mode setting
• Unoccupied mode override
• User help menu
Commercial 11
User HMI for Commercial
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Commercial 12
• Offset setpoints adjustment
• System mode setting
• Local user language
• Fan mode setting
• User help menu
CUSTOMIZED SCREENS
• Parameters are model dependent and may not appear on certain models.
• The day / night setback button appears only in unoccupied mode in the Commercial HMIs 7 to 11. If UI17 input is configured as “override”,
the day / night setback button does not show.
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• Setpoint adjustment
• System mode setting
• Unoccupied mode overdrive
• User help menu
Commercial 7
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F

15
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
2019.08.19 12:54 PM
Indoor °F
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Indoor °F
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Indoor °F
User HMI Show / Hide Options and System Mode
CUSTOMIZED SCREENS
User HMI Show / Hide Options
User HMI displays can be customized further by hiding the system status, fan status or help button. Each show / hide option is applicable to
all User HMI configurations where the option is shown. To hide the option, select disabled for each display setup screen parameter. Refer to
the Display Screens Section.
Options Enabled Options Disabled
Fan Status
System Status
Help Button
Table 1: System Mode Descriptions.
System Mode Signicance and Adjustments
System Mode Off Off: Heating, Cooling demands are ignored.
System Mode Auto Auto: Room Controller automatically toggles between Heating and Cooling modes to satisfy both Heating and
Cooling demands.
System Modes
The following apply in System Modes.
System Auto Mode System Mode Off
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Indoor °F

16
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Setpoint Adjustment / Other Functions
Local humidity shows when RH display is enabled on the setup display screen, from either the internal onboard sensor or a wireless sensor
end device selected by the RH sensor parameter on the setup configuration screen.
CO2shows when CO2display is enabled on the setup display screen, from either the optional CO2detection sensor module or a wireless sen-
sor end device selected by the CO2source parameter on the setup configuration screen.
Outdoor temperature shows when receiving a valid networked outdoor temperature value or a temperature sensor connected to UI23.
Setpoint Adjustment
During occupied setpoint adjustment, large digits are temporarily used to display the occupied setpoint. Use the up and down arrows to
select the setpoint. Normal temperature display resumes after the adjustment and the new value is displayed in the setpoint bar.
CUSTOMIZED SCREENS
Other Functions
Figure 5: Setpoint Function Displays.
Figure 6: Other Function Displays.
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Setpoint °F
Automatic Heating / Cooling Mode
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Indoor °F
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Indoor °F
CO2
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Setpoint °F

17
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Customizable Color Options
CUSTOMIZED SCREENS
Customizable Color Options
Figure 7: Display Color Options.
White Green Blue Dark Grey
PinkGrey Purple Red
Orange Black
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18
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
User and Integrator Screens
The MS8250 VAV Room Controller has dynamic screens that show adjustable parameters and read-only status information. Some screens
and parameters show only when a corresponding parameter is selected. Some screens show only on models with onboard ZigBee, op-
tional CO2Sensor Module (VCM8001V504), optional Wi-Fi Module (VCM8002V504), or paired with optional ZigBee Wireless Sensor (CO2,
Temperature, and Humidity) (SEDCO2G5045). The LUA selection on the Setup screen shows only if a LUA script is uploaded to the Room
Controller.
Figure 8: Legend Screen Details.
When any change is made to a parameter, the value is automatically saved in memory when the next parameter is selected or another screen is
opened. This event is true only if a parameter was changed locally on the Room Controller; making changes through BACnet will not have the same
outcome. If changes need to be done remotely through BACnet, use priority 1, 2, or 3, or write to relinquish default (priority 17).
6/7 Configuration
Language English
Units °C
Low backlight 60 %
Night backlight 5 %
RH display Disable
Parameter Screen
Parameter XXXX
XXXXParameter
XXXXParameter
Read Only Parameter
Adjustable Parameter
Some parameters show only when a corresponding
parameter is selected, or with ZigBee, Wi-Fi, sen-
sors, or LUA script.
Previous
Screen
Next
Screen
Read to Previous Menu
Change Value
USER AND INTEGRATOR SCREENS

19
User Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Network
BAC. IP
Optional prot.
None
Wired protocol
Onboard prot.
None
Network Settings
User can select wired BACnet / Modbus / ZigBee wireless protocol (when ZigBee feature is available).
Onboard ZigBee Detection (Read Only)
Type of Expansion Module: None, ZigBee,
IP or BAC. IP (Read Only)
Table 2: Network Settings Parameter Details.
Conguration Parameters Default Value Signicance and Adjustments
Onboard Protocol
Read Only
Onboard ZigBee detection
Display Readings: None, ZigBee
Optional Protocol
Read Only
Requires onboard ZigBee module or optional Wi-Fi module (VCM8002V504).
ZigBee: ZigBee detected
IP: Wi-Fi module detected
BAC. IP: Wi-Fi module detected and BACnet/IP enabled
Display Readings: ZigBee, IP or BAC. IP
Wired Protocol
Default Value: BACnet
None: No wired protocol configured
BAC MSTP: BACnet MS/TP network protocol
Modbus: Modbus network protocol
Choices: None, BACnet or Modbus
NETWORK SCREENS
Network Settings
Figure 9: Network Settings Display.
Upgrade of ZigBee 2.4 to 3.0
Upgrading ZigBee 2.4 to 3.0 will not support the SEDCO2G5045 sensor. It will therefore need to be recommissioned.
There is also a new “Security Levels” parameter for the ZigBee network (see page 21):
• Low (default value) is fully backwards compatible with ZigBee Home Automation 1.2 devices, and therefore compatible with all of the sen-
sors.
• Normal (needs to be selected by user) is only compatible with ZigBee 3.0.
Wired Protocol (BACnet MS/TP or Modbus)

20
MultiSITE MS8250 VAV Room Controllers
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG Life’s Good” is a registered trademark of LG Corp.
Table 3: ZigBee Network 1 / 2 Parameter Details.
Conguration Parameters
Default Value Signicance and Adjustments
Node Type
Default Value: Router
Sets device to act as Router or Coordinator in a network.
Coord.: Creates the network and manages the binding of wireless devices.
Router: Joins a network created by a coordinator (Coordinator permit join must be set to “ON’).
Choices: Coord. or Router
PAN ID (ZigBee Pan ID)
Default Value: 0
Personal Area Network Identification that links specific Room Controllers to specific ZigBee coordinators. For
every Room Controller reporting to a coordinator, set the SAME PAN ID value both on the coordinator and the
Room Controller.
The default value of 0 is NOT a valid PAN ID and causes ZigBee to be disabled.
Range: 1 to 65535
Channel (ZigBee
Channel)
Default Value: 10
The channel (wireless frequency) on which the ZigBee network transmits and receives data. The channel of the
Coordinator must match that of the routers to exchange data.
The default value of 10 is NOT a valid channel and causes ZigBee to be disabled. The valid range of available
channels is from 11 to 25.
Using channels 15, 20, and 25 is recommended. Channel 25 is considered as being the best one because it is
furthest from the Wi-Fi channels.
Range: 10 to 25
ZigBee Network 1 / 2
The ZigBee Network screen shows only in models with onboard ZigBee.
When creating a ZigBee network, there must be one and only one device with its Node Type
set to Coordinator. For a ZigBee network with a single Room Controller (RC), the RC is set
as Coordinator to pair with the Sensor End Devices (SED). Setting the RC back to Router will
remove the paired SEDs.
For a ZigBee network with a Multi-Purpose Manager (MPM) paired to multiple RCs, the MPM is
set as Coordinator and the RCs are set as Router. The Coordinator MPM controls the pairing of
the Router RCs to the SEDs.
Before pairing any ZigBee devices, the network must rst be created by the Coordinator.
NETWORK SCREENS
ZigBee Network 1 / 2
Figure 10: ZigBee Network 1 / 2 Display.
1/2 ZigBee Network
Node type Router
PAN ID
Channel 10
Security Low
Network Status No NWK
Permit join
0
Off