Engineering Manual
Table Of Contents
- Convergence of Technology, Innovation, Flexibility, & Style
- Unit Nomenclature
- Outdoor Unit Overview
- Indoor Unit Overview
- Controls and Options Overview
- Art Cool Mirror Indoor Units
- General Data / Specifications
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- Acoustic Data
- Air Velocity and Temperature Distribution
- Refrigerant Flow Diagram
- Wiring Diagram
- Factory Supplied Parts and Materials
- Installation and Best Layout Practices
- Art Cool Gallery Indoor Units
- General Data / Specifications
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- Acoustic Data
- Air Velocity and Temperature Distribution
- Refrigerant Flow Diagram
- Wiring Diagram
- Factory Supplied Parts and Materials
- Installation and Best Layout Practices
- Standard Wall-Mounted Indoor Units
- General Data / Specifications
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- Acoustic Data
- Air Velocity and Temperature Distribution
- Refrigerant Flow Diagram
- Wiring Diagram
- Factory Supplied Parts and Materials
- Installation and Best Layout Practices
- Duct (Low Static) Indoor Units
- General Data / Specifications
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- External Static Pressure
- Acoustic Data
- Refrigerant Flow Diagrams
- Wiring Diagram
- Factory Supplied Parts and Materials
- Installation and Best Layout Practices
- Duct (High Static) Indoor Units
- General Data / Specifications
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- External Static Pressure / Acoustic Data
- Refrigerant Flow Diagrams
- Wiring Diagrams
- Factory Supplied Parts and Materials / Installation
- Installation and Best Layout Practices
- Four-Way Ceiling Cassette Indoor Units
- General Data / Specifications
- Dimensions
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- Acoustic Data
- Air Velocity and Temperature Distribution
- Refrigerant Flow Diagram
- Wiring Diagram
- Factory Supplied Parts and Materials
- Installation and Best Layout Practices
- Vertical-Horizontal Indoor Units
- General Data / Specifications
- Dimensions
- Cooling Capacity Table
- Heating Capacity Table
- External Static Pressure
- Acoustic Data
- Refrigerant Flow Diagram
- Wiring Diagram
- Factory Supplied Parts and Materials
- Installation and Best Layout Practices
- Equipment Selection Procedure
- Building Ventilation Design Guide
- Placement Considerations
- Refrigerant Piping Design
- Design Guideline Summary
- Creating a Balanced System / Manual Layout Procedure
- LG Engineered Multi F MAX Y-Branch Kit
- Refrigerant Charge
- Installation & Layout Best Practices
- Refrigerant Piping System Layout
- Piping Insulation
- Condensate Drain Piping
- Y-Branch Kit
- Wiring Connections
- Power Wiring (208-230V) and Communications Cable Details
- Indoor Unit Group Control
- Acronyms
General Data / Specications
Model Name LMCN077HV LMCN097HV LMCN125HV LMCN185HV
Nominal Cooling Capacity (Btu/h)
1
7,000 9,000 12,000 18,000
Nominal Heating Capacity (Btu/h)
1
8,100 10,400 13,800 20,800
Operating Range
Cooling (°F WB)
57-77
Heating (°F DB)
59-81
Fan
Type
Turbo
Motor Output (W) x Qty.
43 x 1
Motor/Drive
Brushless Digitally Controlled / Direct
Airflow Rate CFM (H/M/L)
265 / 212 / 177 300 / 265 / 230 335 / 283 / 247 459 / 424 / 388
Unit Data
Refrigerant Type
2
R410A
Refrigerant Control
EEV
Power Supply V, Ø, Hz
3
208-230, 1, 60
Rated Amps (A)
0.25
Sound Pressure Level ±3 dB(A) (H/M/L)
4
31 / 27 / 24 36 / 33 / 30 38 / 35 / 32 38 / 37 / 34
Body Dimensions (W x H x D, in.)
22-7/16 x 8-7/16 x 22-7/16 22-7/16 x 10-3/32 x 22-7/16
Grille (PT-UQC, sold separately) Dimensions (WxHxD, in.)
27-9/16 x 7/8 x 27-9/16
Body Net Weight (lbs.)
31 34
Grille (PT-UQC, sold separately) Net Weight (lbs.)
7
Body Shipping Weight (lbs.)
34 36 40 42
Grille (PT-UQC, sold separately) Shipping Weight (lbs.)
11 11
Power Wiring / Communications Cable (No. x AWG)
5
4 x 18
Heat Exchanger (Row x Column x Fin / inch) x Number
(2 x 8 x 18) x 1 (2 x 10 x 18) x 1
Piping
Liquid (in.)
1/4 1/4
Vapor (in.)
3/8 1/2
Drain O.D. / I.D. (in.)
1-1/4, 1
1
Nominal capacity is rated 0 ft. above sea level with a 0 ft. level difference between outdoor and indoor
units. All capacities are net with a combination ratio between 95 – 105%.
Nominal cooling capacity rating obtained with air entering the indoor unit at 80ºF dry bulb (DB) and 67ºF
wet bulb (WB) and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Nominal heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF
wet bulb (WB) and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
2
This unit comes with a dry helium charge.
3
Acceptable operating voltage: 187V-253V.
4
Sound pressure levels are tested in an anechoic chamber under ISO Standard 3745 and are the
same in both cooling and heating mode. These values can increase due to ambient conditions during
operation.
5
All power wiring / communications cables to be minimum 18 AWG, 4-conductor, stranded, shielded,
and must comply with applicable local and national codes.
Table 71:Multi F Four-Way Ceiling-Cassette Indoor Unit General Data.
FOUR-WAY CEILING-CASSETTE INDOOR UNITS
CEILING-CASSETTE | 131
Four-Way Ceiling-Cassette
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
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