LG MULTI F MAX, Engineering Manual, Page: 3 / 224

INTRODUCTION | 3
Introduction
MULTI
F
MAX
MULTI
F
TABLE OF CONTENTS
Convergence of Technology,
Innovation, Flexibility, & Style ....................................................4
Unit Nomenclature .......................................................................6
Outdoor Unit Overview ...............................................................7
Indoor Unit Overview ..................................................................8
Controls and Options Overview .................................................9
Art Cool Mirror Indoor Units .....................................................16
Mechanical Specifications and Features ...........................................16
General Data / Specifications ............................................................17
Dimensions ........................................................................................18
Cooling Capacity Table ......................................................................20
Heating Capacity Table ......................................................................22
Acoustic Data ....................................................................................23
Air Velocity and Temperature Distribution ..........................................25
Refrigerant Flow Diagram ..................................................................26
Wiring Diagram ..................................................................................27
Factory Supplied Parts and Materials ................................................29
Installation and Best Layout Practices ...............................................30
Art Cool Gallery Indoor Units ...................................................38
Mechanical Specifications and Features ...........................................38
General Data / Specifications ............................................................39
Dimensions ........................................................................................40
Cooling Capacity Table ......................................................................41
Heating Capacity Table ......................................................................42
Acoustic Data ....................................................................................43
Air Velocity and Temperature Distribution ..........................................44
Refrigerant Flow Diagram ..................................................................45
Wiring Diagram ..................................................................................46
Factory Supplied Parts and Materials ................................................47
Installation and Best Layout Practices ...............................................48
Standard Wall-Mounted Indoor Units ......................................58
Mechanical Specifications and Features ...........................................58
General Data / Specifications ............................................................59
Dimensions ........................................................................................60
Cooling Capacity Table ......................................................................64
Heating Capacity Table ......................................................................67
Acoustic Data ....................................................................................69
Air Velocity and Temperature Distribution ..........................................71
Refrigerant Flow Diagram ..................................................................74
Wiring Diagram ..................................................................................75
Factory Supplied Parts and Materials ................................................79
Installation and Best Layout Practices ...............................................80
Duct (Low Static) Indoor Units .................................................90
Mechanical Specifications and Features ...........................................90
General Data / Specifications ............................................................91
Dimensions ........................................................................................92
Cooling Capacity Table ......................................................................93
Heating Capacity Table ......................................................................95
External Static Pressure ....................................................................96
Acoustic Data ....................................................................................97
Refrigerant Flow Diagrams ................................................................98
Wiring Diagram ................................................................................100
Factory Supplied Parts and Materials ..............................................101
Installation and Best Layout Practices .............................................102
Duct (High Static) Indoor Units ..............................................112
Mechanical Specifications and Features ......................................... 112
General Data / Specifications .......................................................... 113
Dimensions ...................................................................................... 114
Cooling Capacity Table .................................................................... 115
Heating Capacity Table .................................................................... 116
External Static Pressure / Acoustic Data ......................................... 117
Refrigerant Flow Diagrams .............................................................. 118
Wiring Diagrams .............................................................................. 119
Factory Supplied Parts and Materials / Installation .........................120
Installation and Best Layout Practices .............................................121
Four-Way Ceiling Cassette Indoor Units ...............................130
Mechanical Specifications and Features .........................................130
General Data / Specifications ..........................................................131
Dimensions ......................................................................................132
Dimensions ......................................................................................133
Cooling Capacity Table ....................................................................134
Heating Capacity Table ....................................................................136
Acoustic Data ..................................................................................138
Air Velocity and Temperature Distribution ........................................140
Refrigerant Flow Diagram ................................................................142
Wiring Diagram ................................................................................143
Factory Supplied Parts and Materials ..............................................144
Installation and Best Layout Practices .............................................145
Vertical-Horizontal Indoor Units .............................................154
Mechanical Specifications and Features .........................................154
General Data / Specifications ..........................................................155
Dimensions ......................................................................................156
Cooling Capacity Table ....................................................................157
Heating Capacity Table ....................................................................158
External Static Pressure ..................................................................159
Acoustic Data ..................................................................................160
Refrigerant Flow Diagram ................................................................161
Wiring Diagram ................................................................................162
Factory Supplied Parts and Materials ..............................................164
Installation and Best Layout Practices .............................................165
Application Guidelines ............................................................174
Equipment Selection Procedure ......................................................174
Building Ventilation Design Guide ...................................................180
Placement Considerations ...............................................................185
Refrigerant Piping Design ......................................................192
Design Guideline Summary .............................................................192
Design Guideline Summary .............................................................193
Creating a Balanced System / Manual Layout Procedure 194
LG Engineered Multi F MAX Y-Branch Kit .......................................195
Refrigerant Charge ..........................................................................196
Installation & Layout Best Practices .....................................199
Selecting Field-Supplied Copper Tubing .........................................199
Refrigerant Piping System Layout ...................................................200
Piping Insulation ..............................................................................208
Condensate Drain Piping .................................................................209
Y-Branch Kit ..................................................................................... 211
Wiring Connections .................................................................214
General Information .........................................................................214
Power Wiring (208-230V) and
Communications Cable Details .......................................................217
Indoor Unit Group Control ...............................................................222
Acronyms .................................................................................223