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MULTI F MAX
LG MULTI F MAX User Manual
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20001747
ISO 9001: 2008
LG ELECTRONICS INC.
LG Electronics, U.S.A., Inc.
Air Conditioning T
echnologies
4300 North Point Parkway
Alpharetta, Georgia 30022
www
.lghvac.com
IM_MultiF_ODU_04_20
Supersedes: IM_MultiF_ODU_03_17
IM_MultiF_ODU_1
1_16
IM_MultiF_ODU_4_16
IM_MultiF_ODU_1
1_15
103
105
Table of Contents
Section 1
3
Default Chapter
3
Table of Contents
3
Safety Instructions
4
Nomenclature
8
General Data
9
Placement Considerations
20
Mounting / Anchoring
31
LG Air Conditioner Technical Solution (LATS)
33
Selecting Copper Piping
37
Copper Expansion and Contraction
38
Piping Handling
41
Refrigerant System Engineering
42
Flaring and Brazing Procedures
46
Refrigerant Piping Insulation
47
Final Installation Procedures
76
Refrigerant Charge
82
Test Run
85
LG Monitoring View (LGMV) Diagnostic Software
93
LG Smart Inverter Monitoring System (SIMS)
95
Maintenance Recommendations
97
Section 2
111
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115
Electrical Data
115
R410A Refrigerant
116
General Installation Guidelines
117
Oceanside Installation Precautions
117
Rooftop Installations
118
Planning for Snow and Ice
118
Piping Preparation
128
Piping Materials and Handling
130
Refrigerant Piping Connections
139
Flushing the Refrigerant Piping
145
Leak Test and Vacuum Procedures
146
Refrigerant Charge
149
Refrigerant Piping Insulation
152
Power Wiring and Communications Cable Connections
159
Test Run
164
DIP Switch Settings
165
Self Diagnosis Functions
170
Installation Checklists
178
Section 3
187
Safety Instructions
188
Introduction
193
Unit Nomenclature
195
General Data
196
Specifications
197
Typical Multi F/Multi F Max Systems
199
Refrigerant Piping Requirements
201
General Installation Guidelines
202
Location Selection
202
Install Ceiling Cassette
205
Installing Drain System
206
Refrigerant Piping
208
Piping Materials and Handling
215
Piping Connections
216
Piping Preparation
216
IDU to ODU
217
Piping Insulation
221
Electrical Wiring
223
Power Wiring Specifications and Best Practices
223
Controller Options
224
Power Wiring / Communications Cable Installation Guidelines
224
Indoor Unit Electrical Connections Procedure
226
Decorative Grille Kit Installation
227
Self Diagnosis Functions
228
LG SIMS - Self Diagnosis Functions
230
Controller Options
232
Troubleshooting
235
Error Codes
235
Cautions for Refrigerant Leaks
237
Refrigerant Leaks
237
Installation Checklist
238
Multi F Refrigerant Charge Worksheet
242
Multi F MAX Refrigerant Charge Worksheet
243
Section 4
248
Safety Instructions
249
Introduction
254
Unit Nomenclature
256
General Data
257
Specifications
258
Typical Multi F/Multi F Max Systems
260
Refrigerant Piping Requirements
262
General Installation Guidelines
263
Location Selection
263
Install Ceiling Cassette
266
Installing Drain System
267
Refrigerant Piping
269
Piping Materials and Handling
276
Piping Connections
277
Piping Preparation
277
IDU to ODU
278
Piping Insulation
282
Electrical Wiring
283
General Guidelines
283
Power Wiring Specifications and Best Practices
284
Controller Options
285
Power Wiring / Communications Cable Installation Guidelines
285
Indoor Unit Electrical Connections Procedure
287
Decorative Grille Kit Installation
288
Self Diagnosis Functions
289
LG SIMS - Self Diagnosis Functions
291
Controller Options
293
Troubleshooting
296
Error Codes
296
Cautions for Refrigerant Leaks
298
Refrigerant Leaks
298
Installation Checklist
299
Multi F Refrigerant Charge Worksheet
303
Multi F MAX Refrigerant Charge Worksheet
304
Flex Multi Split Installation Instructions
309
Installation Parts Provided
310
Safety Precautions
311
Installation of Indoor, Outdoor Unit
314
Select the Best Location
314
Seaside Applications and Installation
316
Seasonal Wind and Cautions in Winter
317
Installation
320
Connecting the Piping
320
How to Fix
324
Wiring Connection
325
Conduit Connection
325
Ceiling Dimension and Hanging Bolt Location
326
How to Fix
327
Wiring Connection
327
Conduit Connection
327
Installation of Wired Remote Controller(Optional)
328
Installation of Decorative Panel
330
Drain Piping
332
Flaring Work and Connection of Piping
335
Flaring Work
335
Connection of Piping - Outdoor
336
Installation
339
Installation of the Main Unit
340
Connecting the Cable between Indoor Unit, Distributor Unit and Outdoor Unit
341
Connect the Cable to the Indoor Unit
341
Connect the Cable to the Distributor Unit
342
Connect the Cable to the Outdoor Unit
343
Connection Method of the Connecting Cable(Example)
345
Checking the Drainage, Insulating the Pipe and Special Piping Applications
346
Checking the Drainage
346
Insulating the Pipe and Special Piping Applications
346
Air Purging and Evacuation
347
Leak Checking
347
Evacuation
348
Charging
349
Installation PI485
351
Test Running
352
Function
353
Dip S/W Setting
353
Forced Cooling Operation
354
Wiring Error Check
355
Saving Power Consumption
355
Night Quiet Mode
356
Mode Lock
357
Pcb Display(18/24K Model Only)
358
Combination Indoor Units
359
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LG MULTI F MAX Specifications
General
Brand
LG
Model
MULTI F MAX
Category
Air Conditioner
Language
English
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