Table Of Contents - LG ARND DCR4 Series Installation Manual

Safety Precautions ...................................................................................................................................................................................................... 4-7
Unit Nomenclature .......................................................................................................................................................................................................... 8
Product Data .............................................................................................................................................................................................................. 9-11
Product Overview ......................................................................................................................................................................................................... 9
General Data .............................................................................................................................................................................................................. 10
Electrical Data .............................................................................................................................................................................................................11
Installation ................................................................................................................................................................................................................ 12-16
Receiving, Inspection, Unpacking, Storage, Assemblies ............................................................................................................................................ 12
Service Clearances, Lifting ......................................................................................................................................................................................... 13
Ductwork, Access Holes, Condensate Drain Connection ........................................................................................................................................... 14
Condensate Drain Connection / Drain Piping ............................................................................................................................................................. 15
Common Drainage System ........................................................................................................................................................................................ 16
General Refrigerant Piping System ....................................................................................................................................................................... 17-24
LG Air Conditioner Technical Solution (LATS) ....................................................................................................................................................... 17-18
Refrigerant Safety / Selecting Piping .......................................................................................................................................................................... 19
Piping Handling .......................................................................................................................................................................................................... 20
Brazing Procedure ...................................................................................................................................................................................................... 21
DOAS Layout Example / Selecting the Piping Size ............................................................................................................................................... 22-23
Insulation .................................................................................................................................................................................................................... 24
Electrical System ..................................................................................................................................................................................................... 25-36
General Information .................................................................................................................................................................................................... 25
Wiring / Connections .................................................................................................................................................................................................. 26
Internal Routing .......................................................................................................................................................................................................... 27
Outdoor Unit to DOAS Wiring / Cable System ..................................................................................................................................................... 28-29
Electrical Components ................................................................................................................................................................................................ 30
Terminal Connections for Electrical Components .................................................................................................................................................. 31-35
Field-Mounted Sensors .............................................................................................................................................................................................. 36
Pre-Commissioning ................................................................................................................................................................................................. 37-53
Triple Leak / Pressure Check ................................................................................................................................................................................ 37-38
Triple Evacuation ................................................................................................................................................................................................... 39-41
Refrigerant Charge Worksheet ................................................................................................................................................................................... 42
Start-Up / Checks ....................................................................................................................................................................................................... 43
DOAS Controller Setup ......................................................................................................................................................................................... 44-50
Central Controller Setting ........................................................................................................................................................................................... 51
AC Smart / ACP Controller Setup .......................................................................................................................................................................... 52-53
BACnet / Modbus Point List ................................................................................................................................................................................... 54-57
Due to our policy of continuous product innovation, some specifications may change without notification.
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