LG MultiSITE MS8250 Installation Manual Download Page 1

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MS8250

Model No. VUCQMS8250

Variable Air Volume (VAV) Controller

MultiSITE™ MS8250 VAV Room Controller

INSTALLATION MANUAL

Summary of Contents for MultiSITE MS8250

Page 1: ...MS8250 Model No VUCQMS8250 Variable Air Volume VAV Controller MultiSITE MS8250 VAV Room Controller INSTALLATION MANUAL ...

Page 2: ...or 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 I...

Page 3: ...tallation Manual TABLE OF CONTENTS Safety Precautions 4 6 Before Beginning 7 Introduction 8 Choosing a Location 9 10 Cleaning the Controller 11 Installation 12 Terminal Identification and Function 13 18 Home Screen Display 19 Set Up Screen 20 Power Outage Clock Reset 21 Balancing 21 25 Deployment Considerations 26 PIR Sensor Details 27 PIR Energy Savings 28 Main Specifications 29 Standards and Cer...

Page 4: ...jury or death Disconnect power before installing or servicing the unit There is risk of physical injury or death due to electric shock Properly size all circuit breakers or fuses There is risk of fire electric shock explosion physical injury or death Do not share the electrical circuit with other devices There is risk of fire electric shock physical injury or death due to heat generation Do not us...

Page 5: ...ysical injury or death Dispose of any packing materials safely Packing materials such as nails and other metal or wooden parts will cause puncture wounds or other injuries Tear apart and throw away plastic packaging bags so that children may not play with them and risk suffocation and death Do not install the controller if it will be exposed to rain or other precipitation Do not install the unit i...

Page 6: ...e 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 purpo...

Page 7: ...ructions will result in operation malfunction 1 For 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 ...

Page 8: ...ble to support damper control for Pressure Independent PI and Pressure Dependent PD VAV systems Pre programmed containing all required I O to accomplish VAV Application Embedded local configuration utility using the touch screen allowing for simplified configuration sequence selection re initialization setting of setpoints and control of display settings Accurate temperature control using a Propor...

Page 9: ...ndustry best practices the instructions in this manual and using the proper tools and test instruments Failure to carefully read and follow all instructions will result in equipment malfunction controller and property damage and will void the manufac turer s warranty 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 purpos...

Page 10: ...roller label wires before removing Ensure the wall surface is flat and clean Ensure the controller has sufficient natural air circulation Ensure the external thermal sensor wiring is away from electrical sources Install the controller four to five 4 to 5 feet 1 2 to 1 5m above the floor Do Not s Do not install the controller In drafts or dead spots behind doors and corners In areas subjected to ho...

Page 11: ...me 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 Use a soft pre moistened lint free cloth for cleaning Avoid getting moisture in openings If moisture accesses the electr...

Page 12: ...re correct side of base faces up 5 Pull cables six 6 inches 15cm out from wall 6 Align base and mark location of two mounting holes on wall Figure 2 7 Install anchors in wall 8 Insert cable in central hole of base 9 Insert screws in mounting holes on each side of base 10 Strip each wire 1 4 inches 0 6cm from end 11 Insert each wire and screw according to wiring chart see following pages 12 Gently ...

Page 13: ...able 6 18 or 21 C 24 Vac Common 24 Vac Common ECM 0 10 Vdc Terminal Name Connection 6 18 or 21 C 24 Vac Common 24 Vac Common 10 UO10 0 10 Vdc Output Floating duct reheat is not possible when fan type is ECM Air Flow Sensor PI Only Supported air flow sensor parameters Output voltage 0 10 Vdc Pressure range 0 5 or 5 inch water column Flow a one 1 inch water column Minimum 10 Maximum 10000 Table 2 Te...

Page 14: ...10 Vdc Analog Actuator Terminal Name Connection 5 RC 24 Vac Hot 24 Vac Hot 6 18 or 21 C 24 Vac Common 24 Vac Common 11 UO11 0 10 Vdc Output Floating Actuator Terminal Name Connection 6 18 or 21 C 24 Vac Common 24 Vac Common 9 UO9 Close Actuator 11 UO11 Open Actuator Floating actuation time limits Minimum 0 5 minutes Maximum 9 0 minutes Increment 0 5 minutes Table 4 Terminal Identification for Chan...

Page 15: ...24 Vac Common 24 Vac Common Duct Heater Configuration On Off or PWM or Valve NC or Valve NO 12 UO12 24 Vac Output Table 6 Terminal Identification for Baseboard Reheat Relay with Transformer Dry Contact Terminal Name Connection Required Settings 7 RH Room Controller Terminal 5 24 Vac Baseboard Reheat Relay 8 BO8 24 Vac to Baseboard 24 Vac Terminal Name Connection Required Settings 5 RC 24 Vac Hot R...

Page 16: ...UI20 RS C Common UI22 SS UI23 UI24 0 10 Vdc Input BO1 BO2 BO3 BO4 Fan On RC 24 Vac C Common RH BO8 Aux Heat UO9 Close Damp UO10 Open Valve UO11 0 10 Vdc Output UO12 0 10 Vdc Output 7 8 9 10 11 12 1 2 3 4 5 6 BASEBOARD 24 Vac 24 Vac Com 0 10 Vdc ANALOG HEATING COIL Com Input RC Input RC 0 10 Vdc ANALOG ACTUATOR DAMPER Com COMMON 24 Vac FAN HI FAN MED FAN LO Low voltage TERMINAL BLOCK Figure 5 Press...

Page 17: ...UO11 0 10 Vdc Output UO12 0 10 Vdc Output 7 8 9 10 11 12 CHANGEOVER SENSOR Com Sens SUPPLY AIR TEMP SENSOR OPTIONAL Com Sens FLOW SENSOR Com RC Output 13 14 15 16 17 18 19 20 21 22 23 24 BACnet BACnet BACnet REF UI16 UI17 Common UI19 CS UI20 RS C Common UI22 SS UI23 UI24 0 10 Vdc Input 0 10 Vdc ANALOG HEATING COIL BASEBOARD 24 Vac 24 Vac Com Com Input RC Input RC 0 10 Vdc ANALOG ACTUATOR DAMPER Co...

Page 18: ...21 22 23 24 BACnet BACnet BACnet REF UI16 UI17 Common UI19 CS UI20 RS C Common UI22 SS UI23 UI24 0 10 Vdc Input 1 2 3 4 5 6 BASEBOARD 24 Vac 24 Vac Com HEATING VALVE Com Open Close Open Close FLOATING ACTUATOR DAMPER Com Pressure Dependent No Fan Floating Control Configuration Parameter Name Configuration Settings VAV Box Type PD Actuator Type Floating Fan Type None Reheat Configuration Duct Baseb...

Page 19: ...Date Occupancy Status Room Indoor Temperature Room Indoor Humidity Outdoor Temperature Home Screen Display User HMI is configurable and allows display functions such as Date Time Humidity Outdoor Temperature Setpoint and others to be enabled or disabled by setting various parameters HOME SCREEN DISPLAY Figure 8 Home Screen Display with MS8250 Hospitality User Interface Shown Up Arrow Increase Temp...

Page 20: ...ration menu parameters a password entry prompt shows to prevent access to device configuration components For more information on using and configuring the functions of the HMI refer to the LG MultiSITE MS8250 Series Room Controller User Manual Enter BACnet and ZigBee Network Settings Enter Parameter Configuration Menu Enter Balancing Settings Enter Display Settings Enter Setpoints Settings Enter ...

Page 21: ... hours Clock no longer increments and must adjusted when power is restored 72 hours Clock functions are fully reset and must be re initialized as per a new installation POWER OUTAGE CLOCK RESET BALANCING Balancing During balancing a technician will install a calibrated flow sensor balometer over the outlet in each room and use this to calibrate the MS8250 VAV Room Controller Pressure Independent T...

Page 22: ...m and Maximum Cooling Airflow When damper is fully open the airflow must be at least 40 60 CFM higher than the planned Maximum Cooling airflow Failure to follow these instruc tions can result in erratic airflow control depending on the system design 4 Calibrate sensor at Minimum airflow On page 2 2 Balancing PI set the Damper Override to Minimum Flow The displayed Airflow Setpoint will use the val...

Page 23: ...rrent active airflow setpoint Airflow Setpoint is not displayed when Damper Over ride is Open or Closed Range 0 to 10000 CFM 0 to 4720 l s Min Flow Minimum Airflow Default value 340 CFM 160 l s AV250 R W Minimum airflow supplied to the zone Range 40 to 800 CFM 19 to 377 l s Max Cool Flow Maximum Cooling Airflow Default Value 340 CFM 160 l s AV252 R W Maximum airflow supplied to the zone when cooli...

Page 24: ... airflow setpoint 5 Open Force damper fully open Choices None Minimum Max cool Close Reheat and Open Balometer Measured Airflow From Balometer Default Value 0 CFM 0 l s N A Measured value will be used to update calibration Offset and ensure mea sured Airflow level matches Balometer reading Balometer is displayed when Damper Override is Minimum or Max cool Range 0 to 20000 CFM 0 to 9440 l s Minflow...

Page 25: ... on the Balancing PD page see next page Repeat until measured airflow at the damper position matches the desired airflow 3 On page Balancing PD revert the Damper Override to None to allow the system to return to normal operation Figure 14 Balancing PD Display Min position Balancing 100 30 Reheat pos 100 Max heat pos None Damp override 10 Max cool pos BALANCING Configuration Parameter BACnet Functi...

Page 26: ...ement almost always moves lateral to the PIR which ensures detection by the PIR as well as respecting the PIR detection range of 20 feet 6 meters at 140 and 16 feet 5 meters between 15 to 30 laterally DEPLOYMENT CONSIDERATIONS Figure 15 Recommended Deployment for the MS8250 Example of Incorrect Deployment The image below shows four MS8250 Room Control lers two for each room installed in non ideal ...

Page 27: ...oller in stand by mode and if there is a motion then it goes back in occupied mode It is also recommended to disable the unoccupied mode set the unoccupied time to 0 so there is only two 2 modes in the Room Controller stand by and occupied for a stand alone solution Refer to the two 2 diagrams below for the Room Controller internal occupancy states transition MS8250 with internal and or external m...

Page 28: ...IR ENERGY SAVINGS Energy Savings PIR could maximize energy savings from 10 30 by adjusting temperature set points in unoccupied zones during sched uled periods Typical Savings of 10 30 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 0 2 4 6 8 10 12 14 16 18 20 22 24 Time of Day EST Energy Usage KWh 0 10 20 30 40 50 Saving Percentage Typical Consumption Top Line PIR Thermostat Consumption Middl...

Page 29: ...ccuracy 0 9 F 70 F 0 5 C 21 C typical calibrated Humidity Sensor Precision Reading range from 10 90 R H non condensing 10 to 20 precision 10 20 to 70 precision 5 70 to 90 precision 10 Humidity Sensor Stability Less than 0 25 yearly typical drift Occ Unocc and Standby Cooling Setpoint Range 54 F to 100 F 12 0 C to 37 5 C Occ Unocc and Standby Heating Setpoint Range 40 F to 90 F 4 5 C to 32 C Room a...

Page 30: ...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 thi...

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Page 32: ...New Issue IM_MultiSITE_RoomController_VAV_MS8250_08_20 LG Electronics U S A Inc Air Conditioning Technologies 4300 North Point Parkway Alpharetta Georgia 30022 www lghvac com ...

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