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
Ceiling
Anchor
Long nut or turnbuckle
Suspension bolt
Ceiling tile
Install the four screws
at the location marked on the
template
Installation Guide
(template)
Ceiling tile
7-3/32 inches
Ceiling tile
Ceiling
Leave 1-9/16 inches of the bolt
beneath the bracket
Open the ceiling tiles that are
along the outside edge of the
installation guide.
Indoor Unit
Leave a space of 1-3/16 inches ± 1/8 inches
between the bottom of the indoor unit and the
ceiling
Installing Multiple Indoor Units in One Area
Ensure there is enough space between indoor units, lighting fixtures,
and ventilation fans / systems.
FOUR-WAY CEILING-CASSETTE INDOOR UNITS
>59-1/16 inches
Indoor unit
Lighting
Ventilator
Indoor unit
>78-25/32 inches
>118-5/32 inches
Figure 199:Installing Multiple Indoor Units.
Preparing the Installation Area
1. Installation guide (template) depicts the exact dimensions
necessary for the ceiling opening.
2. Choose the location for the indoor unit, and then mark where the
bolts, refrigerant piping, and drain hose should be. Suspension
bolt angle should account for drain direction.
3. Drill holes for the bolts. Use either a W 3/8 inch or a M10 size
bolt.
23-1/16 inches ~ 26 inches (Ceiling Opening)
20-3/8 inches
18-5/32 inches
20-3/8 inches
23-1/16 inches ~ 26 inches (Ceiling Opening)
20-19/32 inches
22-15/32 inches
Unit Size
22-15/32 inches
Unit Size
12-9/16 inches
Figure 200:Ceiling Opening Dimensions and Bolt Locations.
Figure 201:Installing the Hanging Bolt in the Ceiling.
For easier installation, attach the accessories (except for the
decoration panel) before hanging the indoor unit.
Figure 202:Installation Diagram.
Installation and Best Layout Practices
Preparing the Installation Area and Hanging the Indoor Unit Frame
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.
146 | CEILING-CASSETTE
Multi F and Multi F MAX Indoor Unit Engineering Manual
MULTI
F
MAX
MULTI
F