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LG LUU127HV - User Manual

LG LUU127HV
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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)
LC247HV (24,000 Btu/h)
LC367HV (36,000 Btu/h)
LC427HV (42,000 Btu/h)
LC097HV4 (9,000 Btu/h)
LC127HV4 (12,000 Btu/h)

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Summary

ARCHITECTURAL APPEAL

Inverter Technology

Explanation of the inverter technology used in the systems for efficiency and control.

PRODUCT DATA

Product Features and Benefits

Detailed description of the features and benefits of the four-way ceiling cassette systems.

General Data

General data and pairing information for outdoor, indoor units, and controllers.

Electrical Data

Table providing electrical data for the four-way ceiling cassette units.

PRODUCT FEATURES AND BENEFITS

Inverter Driven

Details on how the inverter technology optimizes efficiency and reduces costs.

UNIT NOMENCLATURE

GENERAL DATA

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

LGMV DIAGNOSTIC SOFTWARE

PERFORMANCE DATA

Cooling Capacity Data

Detailed cooling capacity tables for various models and operating conditions.

Heating Capacity Data

Detailed heating capacity tables for various models and operating conditions.

APPLICATION GUIDELINES

Equipment Selection Procedure

Procedure for selecting the appropriate equipment based on system requirements.

Placement Considerations

Guidelines for optimal placement of indoor and outdoor units.

EQUIPMENT SELECTION PROCEDURE

System Sizing Check Formulas

Formulas for checking system capacity against design loads and conditions.

BUILDING VENTILATION DESIGN GUIDE

PLACEMENT CONSIDERATIONS

Selecting the Best Location for the Indoor Unit

Criteria for choosing optimal locations for indoor units, including clearance and accessibility.

Selecting the Best Location for the Outdoor Unit

Criteria for choosing optimal locations for outdoor units, considering environmental factors and accessibility.

Tie-Downs; Wind Restraints and Lightening Protection

Procedures for securing units against wind and protecting from lightning strikes.

General Mounting

Guidelines for securely attaching outdoor units to mounting platforms.

Installing the Drain System

Specifications and procedures for installing the condensate drain system.

REFRIGERANT PIPING DESIGN & LAYOUT BEST PRACTICES

REFRIGERANT PIPING DESIGN

INSTALLATION & LAYOUT BEST PRACTICES

No Pipe Size Substitutions

Prohibition of changing pipe sizes to avoid system malfunction.

Brazing Practices

Best practices for brazing refrigerant piping to ensure system integrity.

Flare Connection Practices

Proper techniques for making flare connections to prevent refrigerant leaks.

Charging

Procedures for charging the system with refrigerant based on pipe length.

CONDENSATE DRAIN PIPING

ELECTRICAL CONNECTIONS

Outdoor Unit Power Wiring; Communications Cable Connections

Procedures for connecting power and communication cables to outdoor units.

Cassette Indoor Unit Power Wiring; Communications Cable Connections

Procedures for connecting power and communication cables to cassette indoor units.

MECHANICAL SPECIFICATIONS

LG LUU127HV Specifications

General IconGeneral
RefrigerantR410A
Indoor Unit Weight24.3 lbs
Cooling Capacity12000 BTU/h
Energy Efficiency Ratio (Cooling)12.0 EER
Power Supply208-230V, 60Hz, 1-Phase
Operating Temperature (Cooling)64°F to 115°F
Operating Temperature (Heating)5°F to 75°F
Outdoor Unit Dimensions (WxHxD)31.5" x 21.7" x 11.4"

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