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MULTI V S ARUN038GSS4
LG MULTI V S ARUN038GSS4 User Manual
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Refer to Service Manuals posted on www
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LG Electronics, U.S.A., Inc.
Commercial
Air Conditioning Division
4300 North Point Parkway
Alpharetta, Georgia 30022
www
.lg-vrf.com
LG Electronics Products Support
1-888-865-3026 USA
Follow the prompts for HV
AC products.
,0B0XOWL9B6B2XWGRRU8QLWVBB
2ULJLQDO,VVXH,0B0XOWL9B6B2XWGRRU8QLWVB
20001747
ISO 9001: 2008
LG ELECTRONICS INC.
84
Table of Contents
Safety Instructions
3
Table of Contents
7
General Data
8
Refrigerant Information
9
R410A Refrigerant
9
Oceanside Installation Precautions
10
Selecting the Best Location for the Outdoor Unit
10
Dealing with Snow and Ice
11
Rooftop Installations
11
Tie-Downs and Lightning Protection
11
Service Access and Allowable Clearances for Outdoor Unit
12
Rigging Instructions for Outdoor Unit
14
Rigging Multi V S Outdoor Units
14
Mounting Bolt Location/Foundation for Installation
15
Mounting the Outdoor Unit
15
General Installation Guidelines
10
Creating a Flare Fitting
16
Piping Preparation
16
Brazing Practices
17
Loosening the Flare Nuts
17
Multi V S Outdoor Unit Piping Installation Options
17
Tightening the Flare Connections
17
Piping Materials and Handling
18
Selecting Field-Supplied Copper Tubing
18
LG Engineered Y-Branch Kits and Header Kits
19
Y-Branch Kits
19
Header Kits
20
Copper Expansion and Contraction
21
Liquid Line
21
Vapor Line
21
Linear Thermal Expansion of Copper Tubing in Inches
22
Coiled Expansion Loops and Offsets
23
Field-Provided Isolation Ball Valves
24
In-Line Refrigeration Components
24
No Pipe Size Substitutions
24
Using Elbows
24
Obstacles
25
Pipe Supports
25
Examples of Supports
26
Outdoor Unit Connections
27
Refrigerant Piping Connections
27
Closing the Shut off Valve
28
Insulating the Shut off Valve
28
Opening the Shut off Valve
28
Remove Leak Prevention Cap
28
System Using a Header
30
System Using Y-Branches
30
System Using Y-Branches and Header
31
Selecting the Refrigerant Piping
32
Adjusting LATS Multi V S Output for Altitude
34
Design Choices
34
LATS Report
34
Required LATS Multi V Piping Design Software File
34
Acceptable Piping Layouts
35
Branch Pipe Fittings
36
Y-Branches
36
Headers
37
Vacuum Mode
38
Vacuum Procedure
39
Leak Test
40
Refrigerant Charge
41
Additional Refrigerant Charge Formula
42
Refrigerant Piping Insulation
43
Pipe Sleeves at Penetrations
45
Underground Refrigerant Piping
45
Applying Insulation to Y-Branch and Header Fittings
46
Separating Power Wires and Communication Cables
47
Outdoor Unit Power Wiring and Cable Connections
48
Detail of the Power Wiring and Communications Cable Connections
49
Power Supply/Power Wiring Specifications
50
Power Wiring Connection Guidelines
50
Communications Cable Specifications
51
Run Self Diagnostics Check Using the DIP Switches
53
Using the Initial Display
53
Indoor Unit Auto Addressing
54
Troubleshooting a Failed Indoor Unit Auto Addressing Procedure
56
Group Addressing Procedure
57
Plan the Central Control Addresses Assignments
57
Terminating Group Controlled Indoor Units
57
Central Controller Communications Limitations
58
Group Number/Member Number
58
Hex Address Assignment Limitations
58
Indoor Unit Central Control Address Assignments
58
For Indoor Units that Are Being Gontrolled as a Group
59
For Indoor Units that Are Not Being Controlled as a Group
59
Upload Central Control Address to the Indoor Units
59
Setting the Cool/Heat Selection Function
60
Setting the Functions
60
Night Low Sound Function
61
Setting the Static Pressure Compensation Function
61
Setting the Outdoor Unit Address
62
Snow Removal and Rapid Defrost Functions
62
Adjusting Target Pressure Function
63
DIP Switch Settings for GEN4 Equipment
64
Generation 4 Equipment
64
Serial Numbers of Air / Water Source Units with Gen 4 Software
64
System Component Combinations and Operation Status
64
LG Monitoring View (LGMV) Diagnostic Software
65
Troubleshooting
65
Error Codes
66
LG Monitoring View (LGMV) Diagnostic Software and Cable
66
Recommended Minimum PC Configuration
66
Electrical Wiring
47
Error Code Tables
67
Refrigerant Concentration Limit (RCL) Calculations
71
Caution for Refrigerant Leaks
71
Installation Checklist
74
Major Component Rough-In
74
Piping and Insulation
74
Condensate Pump/Drain Installation
75
Power Wire and Communications Cables
75
Refrigerant Circuit Preparation
78
Charge Worksheet
84
System Refrigerant Charge Calculator (Lbs.)
84
4
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LG MULTI V S ARUN038GSS4 Specifications
General
Brand
LG
Model
MULTI V S ARUN038GSS4
Category
Air Conditioner
Language
English
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