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ARWN038GA2
LG ARWN038GA2 User Manual
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Installation, Operation & Maintenance Manual
ARWN038GA2
ARWN048GA2
ARWN053GA2
Heat Pump 208-230V
, 60Hz, 1 Phase
V
ariable Refrigerant Flow W
ater Source Units
3.0, 4.0, and 4.4
T
ons
2
Table of Contents
Default Chapter
3
Table of Contents
3
Safety Precautions
4
Installation
4
Wiring
6
Operation
7
Nomenclature
8
Water Source Unit Specifications
9
General and Electrical Data
9
Dimensions
10
Refrigerant Circuits
11
Wiring Diagram
14
Accessories
15
Installation
17
Placement Considerations
17
Transporting / Lifting the Water Source Unit
18
Minimum Space Requirements
19
General Mounting / Anchoring the Water Source Unit
20
Refrigerant Piping Installation
21
Computer-Assisted Refrigerant Pipe Design
21
System Engineering
22
Pipe Sizing
31
Refrigerant Pipe Connections
35
Insulating the Refrigerant Piping System
38
Pressure Testing
40
Water Circuit Installation
41
Piping System Specifications
43
Flow Switches and Solenoid Valves
48
Variable Water Flow Control Kit
49
Electrical System Installation
57
General Information
57
Power Wiring
58
Wiring and Cable Terminations
59
Communications Cables
60
Pre-Commissioning and Maintenance
63
Preparing the Electrical System
63
Indoor Unit Auto Addressing Auto Addressing
63
Group Control
67
Central Control
68
Indoor Unit Temperature Sensing Strategy / Air Balance
70
Prepare the Refrigerant Piping System
71
Preparing / Balancing the Water Circuit
72
Prepare Pre-Commissioning Package Documents
73
Initiate a Request
73
Maintaining the Heat Exchanger
74
General Maintenance Schedule
75
Error Codes
77
LG Monitoring View (LGMV) Diagnostic Software
77
Error Code Tables
79
Checklists
83
LG Multi V Pre-Commissioning Device Configuration Worksheet
83
Installation Checklist
84
Pre-Commissioning Checklist
86
Refrigerant Charge Worksheet
90
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LG ARWN038GA2 Specifications
General
Cooling Capacity
3.8 kW
Heating Capacity
4.0 kW
Cooling Capacity (BTU/h)
13000 BTU/h
Heating Capacity (BTU/h)
13600 BTU/h
Voltage (V)
220-240 V
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