LG MULTI V ARNU073M1A4 User Manual

3
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
TABLE OF CONTENTS
Safety Instructions .........................................................................4
Unit Nomenclature ....................................................................... 11
R410A Refrigerant ....................................................................... 12
General Data ...............................................................................13
Specications − High-Static M1 Chassis ........................................... 13
Specications − High-Static M2 Chassis ........................................... 14
Specications − High-Static M3 Chassis ........................................... 16
Specications − High-Static B8 Chassis............................................ 17
Specications − Low-Static Ducted L1/L2/L3 Chassis ...................... 18
Specications − Vertical Air Handler NJ Chassis ............................... 19
Specications − Vertical Air Handler NK Chassis .............................. 20
Electrical − High-Static M1/M2/M3/B8 Chassis ................................. 21
Electrical − Low-Static Ducted L1/L2/L3 Chassis .............................. 22
Electrical − Vertical Air Handling Unit NJ/NK Chassis ....................... 23
Dimensions – High-Static Ducted M1 Chassis .................................. 24
Dimensions – High-Static Ducted M2 Chassis .................................. 25
Dimensions – High-Static Ducted M3 Chassis .................................. 26
Dimensions – High-Static Ducted B8 Chassis ................................... 27
Dimensions – Low-Static Ducted L1/L2/L3 Chassis .......................... 28
Dimensions – Vertical Air Handler NJ Chassis .................................. 29
Dimensions – Vertical Air Handler NK Chassis.................................. 30
Refrigerant Piping Diagrams ............................................................. 31
General Installation Guidelines ....................................................32
Installation ...................................................................................33
Install Ducted IDU Chassis ................................................................ 33
Indoor Unit Dimensions ..................................................................... 34
Duct Connection Dimensions ............................................................ 35
Maintenance Clearances ................................................................... 36
General Mounting - Vertical / Horizontal Air Handler Units 37
Piping Connections ............................................................................ 39
Refrigerant Piping ........................................................................ 40
Condensate Piping ......................................................................44
Wiring ..........................................................................................46
General Information / Separating Wiring and Cables ........................ 46
Power Wiring / Communication Cable Connections .......................... 47
Power Supply / Power Wiring Specications ..................................... 48
Communications Cable Specications .............................................. 49
Indoor Unit Communications Cable Connections .............................. 52
Connection Procedure ....................................................................... 54
LGRED°, HRU Compatibility, and Gen 4 DIP Switch Settings 56
Controller and Optional Wall-Mounted Sensor Installation 57
High-Static Ducted M1 Chassis ......................................................... 58
High-Static Ducted M2 Chassis ......................................................... 60
High-Static Ducted M3 Chassis ......................................................... 62
High-Static Ducted B8 Chassis ......................................................... 64
Low-Static Ducted L1 Chassis ........................................................... 66
Low-Static Ducted L2/L3 Chassis ...................................................... 68
Vertical Air Handler NJ Chassis ......................................................... 70
Vertical Air Handler NK Chassis ........................................................ 72
Controls Setup ............................................................................. 74
Installation Checklist .................................................................... 79

LG MULTI V ARNU073M1A4 Specifications

General

Brand	LG
Model	MULTI V ARNU073M1A4
Category	Air Conditioner
Language	English