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LG LC128HV4 - User Manual

LG LC128HV4
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SINGLE-ZONE FOUR-WAY
CEILING-CASSETTE SYSTEM
ENGINEERING MANUAL
Single-Zone Four-Way
Ceiling Cassette
Heat Pump Systems
3/4 to 3-1/2 Tons
LC187HV (18,000 Btu/h)
LC188HV4 (18,000 Btu/h)
LC247HV (24,000 Btu/h)
LC367HV (36,000 Btu/h)
LC427HV (42,000 Btu/h)
LC098HV4 (9,000 Btu/h)
LC128HV4 (12,000 Btu/h)
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LG LC128HV4 Specifications

General IconGeneral
TypeHeat Pump
ModelLC128HV4
EER (Cooling)3.21
RefrigerantR410A
Net Weight (Outdoor Unit)98 kg
Power Supply220-240V, 50Hz

Summary

Product Features and Benefits

Unit Nomenclature

Electrical Data

Outdoor Unit Dimensions

Indoor Unit Dimensions

Outdoor Unit Refrigerant Flow Diagram

Indoor Unit Refrigerant Flow Diagram

Outdoor Unit Wiring Diagram

Indoor Unit Wiring Diagram

Performance Data

Application Guidelines

Equipment Selection Procedure

Steps and factors for selecting appropriate HVAC equipment.

Placement Considerations

Recommendations for proper unit placement to ensure optimal performance.

Placement Considerations

Selecting the Best Location for the Indoor Unit

Criteria for choosing the optimal location for indoor units.

Selecting the Best Location for the Outdoor Unit

Criteria for selecting the optimal location for outdoor units.

Minimum Allowable Clearance and Service Access Requirements

Specifies clearances for safe operation and service access.

Outdoor Unit (36,000 and 42,000 Btu;h Capacity) Service Access and Allowable Clearances

Clearance requirements for larger outdoor unit capacities.

Installing the Drain System

Instructions and specifications for installing the condensate drain system.

Refrigerant Piping Design & Layout Best Practices

Refrigerant Piping Design

Installation & Layout Best Practices

Single Zone Cassette Outdoor Unit Connections

Procedures for connecting refrigerant piping to outdoor units.

Brazing Practices

Best practices for brazing refrigerant piping joints.

Refrigerant Piping System Insulation

Guidelines for insulating refrigerant piping to prevent heat loss/gain.

Flare Connection Practices

Procedures and precautions for making flare connections.

Charging

Procedures for adjusting refrigerant charge based on piping length.

Condensate Drain Piping

Condensate Drain Piping

Construction and installation guidelines for condensate drain piping.

Electrical Connections

Outdoor Unit Power Wiring; Communications Cable Connections

Steps for connecting power and communication cables to outdoor units.

Cassette Indoor Unit Power Wiring; Communications Cable Connections

Procedures for wiring indoor units with power and communication cables.

Detailed Power; Communications System Schematic

Schematic diagram of power and communication system connections.

Mechanical Specifications

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