LG Electronics LP121HEM-Y8 manual Indoor Filters, Rotary Compressor, Position Discharge Grille

Page 4

Indoor Filters

The unit uses two indoor filters which slide in and cut easily. The filters may be cleaned by washing and brushing without removing the front grille.

Rotary Compressor

The unit uses a rotary compressor for quiet, reliable operation and long life.

2 Position Discharge Grille

The discharge grille can provide air flows upward at an angle of 40 off vertical or 15 degree off vertical. The angle is changed by removing the front grille and 4 screws that fasten the discharge grille to the front grille and rotating the louvers to an alternate position.

Indoor Room Freeze Protection

When the unit senses the room temperature falls to less than 40° F the unit activates the fan motor and either the electric resistance heater or the hydronic heater to prevent pipes or fixtures from freezing. This also overrides front desk control of the unit mounted or wall mounted controls.

Door Switch/Occupancy Sensor

The unit is capable of accommodating a field installed door switch and occupancy sensor to operate the energy management feature. For additional information, refer to the unit operation section.

Compressor Overload Protection

This feature prevents the damage of the compressor by sensing the indoor tube temperature in heating. If the indoor temperature is over 130˚ F, the outdoor fan will be switched off and back on when the temperature drops below 120˚ F.

Outdoor Air Temperature Switchover

This will effectively change the unit from heat pump mode to total electric resistance heat.

Temperature limits

The unit is programmed to provide both heating and cooling temperature limits by dip switches on control panel from 50˚ F to 90˚ F. Temperature limits help to prevent overheating and overcooling and reduce energy costs.

Condensate Drain Valve

The unit has a condensate drain valve to prevent water from collecting or freezing in the basepan.

Quick Heater Recovery

The unit is designed to operate the electric heater to warm the room to the temperature set point as soon as heat pump cycle is on in heating. This feature has an advantage of reducing the time to reach the set point and improving the temperature increase for better comfort.

Reverse Cycle Defrosting - (PTHPs only)

The unit will activate the reverse cycle defrost when the outdoor coil temperature has remained at a cold temperature to form the ice on the coil.This ice will reduce airflow though the coil and will also reduce the efficiency of unit. The LG PTHP will employ an active reverse cycle defrost function to melt the ice off the outdoor coil for insuring room comfort conditions and savings from extended operation.

High Temperature Heat Pump Operation Protection

The compressor will be switched off to prevent damage when the heat pump is operated in high outdoor temperatures.

Remote Thermostat Control

Each unit is built to be operated from any standard 4 or 5 wire remote-mounted thermostat, if desired. The unit has a built-in low voltage power source which can accommodate a large variety of thermostat choices-manual, auto changeover, or programmable. A remote thermostat can also be added to any installed unit.

Zone Sensor

Occupants enjoy ultimate comfort with consistent climate control. Attach an optional, inexpensive remote Zone Sensor to exactly match the functions of the PTAC without disabling any features.

Copyright ©2008 LG Electronics. Inc. All right reserved.

- 4 -

Only for training and service purposes

LGE Internal Use Only

 

Image 4
Contents SVC Manual Specification LGE Internal Use OnlyFeatures and Benefits Sleeve and the Rear GrilleDoor Switch/Occupancy Sensor Outdoor Air Temperature SwitchoverTemperature limits Quick Heater RecoveryControl Locations Operation Electric Heating ModelVentilation Cooling only ModelTemperature Limiting Additional ControlsRemoving the Front Grille Additional ControlsMolex Housing Spec REMOTE/LOCAL ControlEnergy Saver Front Desk ControlMechanical Parts Disassembly InstructionsFront Grille Control BOX AIR Handling Parts Electric Heater Electric Heater Model onlyCross Flow FAN Axial FANElectrical Parts ShroudOutdoor Motor CompressorPower Cord 6 P.C.BRefrigeration Cycle CondenserEvaporator Capillary TubeLGE Internal Use Only Pulling Vacuum Installation HOW to Install the UnitDimension of air conditioner Dimension of sleeve assembly optionalWall Case Installation Data Wall Sleeve InstallationGeneral Installation of Wall Case in Wall Opening As shipped, the LG wall sleeve is ready for installationPreparation of the Front Grille Preparation of the Wall Case for All Types of ConstructionLGE Internal Use Only Sub-Base Connected Unit Installation Electrical Safety Electrical RequirementsElectrical Data for 230/208V Model 208, 230, and 208/230 Volt UnitsField Installed Accessories InstallationControl Panel Key Lock DescriptionPart No AYSB2101 Condensate Disposal Pump Kit InstallationHazardous Voltage Place the top cover assembly back into the unit Spraying Architecture Grille Aluminum Single Pack Architectural GrilleCondensate Drain kit Drain InstallationPart No AYDR101 Outdoor Drain Kit Installation Outdoor Drain Kit InstallationIndoor Drain Kit Installation ChecklistLeveling Legs Part No AYLL101Leveling Leg Assembly Leveling Leg Assembly Installation on Wall SleeveHard Wire Kit Junction Box Kit Installation and Wiring ProcedurePart No AYAGALA01 Use Copper Conductors Only208/230 Volt Units Volt UnitsRemote Escutcheon Kit Part No AYRE110Subbase Part No AYSB1101 230/208V 20A AYSB2101 230/208V 30AAfter wiring is complete, mount covers a and F to To each installation instruction for that accessorySkirting Hole Location Right Cover Assembly Subbase with provided screws. FigureTroubleshooting Guide Outside DimensionsPiping System 066mm 406mm 505mmTroubleshooting Guide Fails to Start Complaint Cause Remedy Room AIR Conditioner Voltage Limits 208/230V 187V 253VComplaint Cause Remedy Piping Diagrams Th2 Thermistor for Evaporator pipe temperatureTh3 Thermistor for outdoor Air temperature Th4 Thermistor for Condenser pipe Air temperatureSchematic Diagram CN-NNExploded View 435300BJanuary