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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
CONTENTS
Proprietary Data Notice ................................................................................................................................... 2
Safety Instructions ........................................................................................................................................... 4
Introduction ...................................................................................................................................................... 7
Ceiling Cassette Indoor Units ....................................................................................................................................... 7
Safety ........................................................................................................................................................................... 7
Required Tools (eld provided) ..................................................................................................................................... 7
Required Parts (eld provided) ..................................................................................................................................... 7
Unit Nomenclature ........................................................................................................................................... 9
R410A Refrigerant ......................................................................................................................................... 10
General Data ................................................................................................................................................. 11
Specications ............................................................................................................................................................. 12
Dimensions ................................................................................................................................................................ 15
Electrical Data ............................................................................................................................................................ 25
Refrigerant Piping Diagrams ...................................................................................................................................... 26
General Installation Guidelines ...................................................................................................................... 27
Location Selection ...................................................................................................................................................... 27
Required Clearances .................................................................................................................................................. 27
Inspection ................................................................................................................................................................... 28
Unpack and Inspect for Freight Damage .................................................................................................................... 28
Installation ..................................................................................................................................................... 29
Install Cassette Chassis ............................................................................................................................................. 29
Refrigerant Piping .......................................................................................................................................... 31
Refrigerant Safety ....................................................................................................................................................... 33
Refrigerant Pipe Connections ..................................................................................................................................... 34
Insulate Refrigerant Pipes .......................................................................................................................................... 34
Wiring ............................................................................................................................................................ 35
4-Way Cassette Chassis ............................................................................................................................................ 35
4-Way Cassette TR, TQ Chassis ................................................................................................................................ 36
4-Way Cassette TP, TN, TM Chassis .......................................................................................................................... 38
2-Way Cassette TL Chassis ....................................................................................................................................... 40
1-Way Cassette TT, TU Chassis ................................................................................................................................. 43
Optional Wall-Mounted Sensor and Controller ........................................................................................................... 46
Wall-Mounted Sensor Installation ............................................................................................................................... 46
Wall-Mounted Controller Installation ........................................................................................................................... 46
Install Decoration Panel ................................................................................................................................. 47
4-Way Cassette .......................................................................................................................................................... 47
2-Way Cassette .......................................................................................................................................................... 48
1-Way Cassette .......................................................................................................................................................... 49
Drain Pipe Installation .................................................................................................................................... 50
Install the Condensation Drain Pipe ........................................................................................................................... 50
Controls Setup ............................................................................................................................................... 51
Installation Checklist ...................................................................................................................................... 55
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