
INTRODUCTION | 3
Introduction
MULTI
F
MAX
MULTI
F
TABLE OF CONTENTS
About LG Electronics, Inc. .................................................................... 4
Multi-Zone Systems ............................................................................... 4
Unit Nomenclature ................................................................................. 6
Outdoor Unit Overview ......................................................................... 7
Indoor Unit Overview ............................................................................ 8
Controls and Options Overview ......................................................9-13
Multi F Outdoor Unit Product Data .............................................15-286
Product Features and Benefits .......................................................... 16
Mechanical Specifications ................................................................. 17
General Data ................................................................................18-19
Dimensions ...................................................................................20-22
Rated Cooling Combination Tables ..............................................23-30
Rated Heating Combination Tables ..............................................31-38
Cooling Capacity Tables .............................................................39-182
Heating Capacity Tables ...........................................................183-278
Electrical Data ................................................................................. 279
Acoustic Data .................................................................................. 279
Refrigerant Flow Diagrams .......................................................280-282
Wiring Diagrams .......................................................................283-285
Operation Range ............................................................................. 286
Multi F MAX Outdoor Unit Product Data ..................................287-330
Product Features and Benefits ........................................................ 288
Mechanical Specifications ............................................................... 289
General Data ............................................................................290-291
Dimensions ...................................................................................... 292
Rated Cooling Combination Tables ..........................................293-295
Rated Heating Combination Tables ..........................................296-298
Cooling Capacity Tables ...........................................................299-315
Heating Capacity Tables ...........................................................316-326
Electrical Data ................................................................................. 327
Acoustic Data .................................................................................. 327
Refrigerant Flow Diagrams .............................................................. 328
Wiring Diagrams .............................................................................. 329
Operation Range ............................................................................. 330
Multi F MAX Branch Distribution Unit Product Data ...............331-340
Features and Benefits ..................................................................... 332
Mechanical Specifications ............................................................... 333
General Data ................................................................................... 334
Dimensions ...................................................................................... 335
Refrigerant Flow Diagram ................................................................ 336
Wiring Diagram ................................................................................ 337
Y-Branch Accessory ......................................................................... 338
Branch Distribution Unit Orientation ................................................ 339
Application Guidelines ...............................................................341-358
Equipment Selection Procedure ...............................................342-347
Building Ventilation Design Guide ............................................348-352
Placement Considerations ........................................................353-358
Refrigerant Piping Design & Layout Best Practices ...............359-380
Design Guideline Summary ......................................................360-361
Creating a Balanced / Quality Piping System .................................. 362
Manual Layout Procedure ............................................................... 362
LG Engineered Multi F MAX Y-Branch Kits ..................................... 363
Refrigerant Charge ...................................................................364-365
Selecting Field-Supplied Copper Tubing ..................................366-367
Refrigerant Piping System Layout ............................................368-375
Piping Insulation .............................................................................. 376
Condensate Drain Piping ..........................................................377-378
Cut Sheet ......................................................................................... 379
Wiring Connections ....................................................................381-390
General Information ..................................................................382-384
Power Wiring and Communications Cable Details ...................385-389
Indoor Unit Group Control ............................................................... 390
Acronyms ........................................................................................... 391
TABLE OF SYMBOLS
DANGER
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.
Note:
This symbol Indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action that should not be performed.