LG Multi IV User Manual

TABLE OF CONTENTS
TABLE OF SYMBOLS
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
This symbol indicates situations that may result in equipment or property damage accidents only.
This symbol indicates an action should not be completed.
DANGER
CAUTION
Unit Nomenclature ................................................................................. 4
Outdoor Units and Heat Recovery Units ............................................. 4
Indoor Units ......................................................................................... 5
Acronyms ............................................................................................... 6
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Multi V IV Heat Pump and Heat Recovery Outdoor Units........8
Multi V IV Heat Recovery Units ... ........................................................9
General Data ........................................................................................10
Electrical Data ......................................................................................31
Outdoor Unit Dimensions ...................................................................35
Heat Recovery Unit Dimensions ........................................................ 41
Wiring Diagrams .................................................................................. 44
Refrigerant Flow Diagrams .................................................................60
Acoustic Data ....................................................................................... 89
Outdoor Unit Accessories .................................................................. 97
Equipment Selection Procedure ...................................................... 102
Building Ventilation Design Guide ................................................... 107
Placement Considerations ................................................................110
Heat Pump and Heat Recovery Outdoor Units .................................110
Heat Recovery Unit ..........................................................................115
Refrigerant Piping Design and Layout Best Practices ...................117
Design Guideline Summary ..............................................................116
Pipe Sizing for ARUN Series Heat Pump Systems ......................... 120
Pipe Sizing for ARUB Series Heat Recovery Systems .................... 124
LG Engineered Y-branch Kits .......................................................... 127
LG Engineered Header Kits ............................................................. 132
LATS Calculated Refrigerant Charge .............................................. 134
Selecting Field-Supplied Copper Tubing ......................................... 137
General Information / Guidelines ..................................................... 140
Electrical Connections ......................................................................147
ARUN Series Heat Pump Systems (208-230V & 460V) .................. 148
ARUB Series Heat Recovery
Systems (208-230V & 460V) ...........................................................149
DIP Switch Settings for Gen4 Equipment ........................................ 150

LG Multi IV Specifications

General

Brand	LG
Model	Multi IV
Category	Heat Pump
Language	English