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LMU300HHV
LG LMU300HHV User Manual
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MUL
TI
F
MA
X
MUL
TI
F
HEA
T
PUMP
OUTDOOR
UNIT
INST
ALLA
TION
MANUAL
Multi-Zone Heat Pump Systems
1.5 to 3.5 T
ons
WITH
Dual-, T
ri-, and Quad-Zone
Multi F
Up to Six Zones
Multi F MAX
2
Table of Contents
Default Chapter
3
Table of Contents
3
Safety Instructions
4
Table of Symbols
4
Installation
4
Wiring
6
Operation
7
Unit Nomenclature
8
Multi-Zone Systems — Indoor Units and Outdoor Units
8
Branch Distribution Units
8
General Data
9
Multi F with LGRED Electrical Data
10
Multi F with LGRED Outdoor Unit Dimensions
14
Branch Distribution Unit General Data
15
Branch Distribution Unit Dimensions
16
EEV Service
16
Piping Direction
16
Transporting / Lifting
17
Installation
17
Placement Considerations
18
Selecting the Best Location for the Outdoor Unit
18
Outdoor Unit Condensate Drain Piping
18
Planning for Snow and Ice
18
Rooftop Installations
19
Oceanside Installation Precautions
19
Tie-Downs and Lightning Protection
19
Lightning Protection
19
Minimum Allowable Clearance and Service Access Requirements
20
Side-By-Side Series Installation
22
Series Installation
22
Installing Outdoor Units Indoors
23
Benefits of Installing Outdoor Units Indoors
23
Design Considerations Include
23
General Guidelines
23
Louver Recommendations for Outdoor Unit Enclosure
24
Louver Recommendations
24
Using “S” Type Louvers
24
If the Louver Open Rate Is too Small
24
Open Rate by Louver Radian
25
Confirming Air Flow Rate / Total Opening Rate
25
Louver Dimensions
25
Formula
25
Selecting the Best Location for the Indoor Units
26
Selecting the Best Location for the Branch Distribution (BD) Units
26
Outdoor Unit Platform Concrete Specifications
28
Bolting the Outdoor Unit to the Platform Procedure
28
Mounting / Anchoring
28
Branch Distribution Unit Orientation
29
Ceiling Mount Installation - Hangers with Hanging Bolt
29
Ceiling Mount Installation - Hangers Only
29
Ceiling Mounting Options
29
Wall Mount Installation - Hangers Only
30
Wall Mounting Options
30
Right Side View, Port End Facing Right
30
Left Side View, Port End Facing Left
30
LG Air Conditioner Technical Solution (LATS) Software
31
Features
31
General Refrigerant Piping System Information
31
Example of a LATS Tree Diagram
32
LATS Generates a Complete Project Report
32
Proper Design to Install Procedure
32
Device Connection Limitations
33
Example of a Multi F with LGRED System
33
Refrigerant Safety Standards
33
Using Refrigerant Components
34
ACR Copper Tubing Dimensions and Physical Characteristics
35
ACR Rated Piping Wall Thicknesses
35
For Multi-Zone Split Systems
35
Selecting Field-Supplied Copper Piping
35
Copper Expansion and Contraction
36
General Example:
36
Liquid Line
36
Vapor Line
36
To Find the Anticipated Expansion Value
37
Coiled Expansion Loops and Offsets (Plan View)
38
Piping Handling
39
Field-Provided Isolation Ball Valves
40
No In-Line Refrigeration Components
40
No Pipe Size Substitutions
40
Refrigerant System Engineering
40
Obstacles
41
Pipe Support at Header Fitting
41
Pipe Support at Y-Branch Fitting
41
Pipe Supports
41
Examples of Supports
42
O-Ring Band Support with an Insulated Pipe
42
Two-Point Down-Stop Support
42
U-Bolt Support with an Insulated Pipe
42
Pipe Sleeve Options
43
Pipe Sleeves at Penetrations
43
Underground Refrigerant Piping
43
Utility Conduit Sizes
43
Flaring and Brazing Procedures
44
Flaring Procedure
44
Flaring the Pipe End
44
Remove the Burrs
44
Brazing Procedure
45
Loosening the Flare Nuts
45
Tightening the Flare Nuts
45
Refrigerant Piping Insulation
45
Multi F with LGRED Outdoor Unit to Indoor Unit Piping Connections
46
Avoid Pipe Damage
46
Indoor Unit Pipe Sizes
46
Connection Socket Dimensions
46
Refrigerant Piping System Installation
46
Installing Field Piping to the Outdoor Unit Piping Connections
47
Using the Connection Socket
47
Connection Socket Installation
47
Connection Socket Diagram, Internal View
47
Multi F MAX with LGRED Outdoor Unit System Piping Connections
48
Branch Distribution to Indoor Unit Piping Connections
49
Indoor Unit Piping Connections
49
Socket Connection
51
Multi F MAX with LGRED Y-Branch Kit PMBL5620
52
Horizontal Configuration End View
52
Y-Branch Installation Alignment Specification
52
Bundling
53
Special Applications
53
When the Outdoor Unit Is Installed above the Indoor Unit
53
Outdoor Unit above Indoor Units
53
Condensate Drain Piping
54
Drain Leak Test
54
Insulation
55
General Piping System Insulation
55
Insulating the Shut off / Isolation Ball Valve
55
Minimum Refrigerant Pipe EPDM Insulation Wall Thickness Requirements
56
Typical Conditioned Location
56
Special Conditioned Location
56
Typical Unconditioned Location
56
Installing the Insulation
57
Insulating Piping Joints
57
Y-Branch Kit Insulation
57
Piping with Insulation Material
57
Electrical System Installation
58
General Information
58
Power Wiring/Communication Cable Connections
59
To Install a Ring or Fork Terminal
59
To Connect the Wiring to the Terminals
59
Proper and Improper Power Wiring Connections
59
LG Terminal Connections
60
Power Supply / Power Wiring Specifications
60
Circuit Breaker / Fuse Size
60
Circuit Breaker
60
Multi F with LGRED Systems
61
Typical Multi F / Multi F MAX with
61
Installation
63
Distributor Unit (Multi F MAX with LGRED Systems Only)
69
General Instructions
69
Branch Distribution Unit Wiring Connection Procedure
69
Pi-485
70
Lmu360Hhv, Lmu420Hhv
70
From Indoor Units to Remote Controllers
71
One Example of Indoor Unit to Zone Controller Connection
71
Between Multiple Indoor Units Operating as Group (Group Control)
72
For Indoor Units with CN-REMO Connections
72
General Specifications
72
Triple Leak / Pressure Test
73
Final Installation Procedures
73
Triple Leak / Pressure Test Diagram
73
Deep Evacuation Procedure
74
Deep Evacuation Procedure Steps
74
Triple Evacuation Procedure
75
Triple Evacuation Procedure Steps
76
Outdoor Unit Factory Charge
77
Refrigerant Charge
77
Multi F MAX with LGRED Systems
78
Charging the Refrigerant
79
Refrigerant Charge
79
Cautions for Refrigerant Leaks
80
Example of R410A Refrigerant Leak Location
80
Refrigerant Concentration Limit (RCL) Calculations
80
Example of Acceptable Ventilation Methods
81
Examples of Zones
81
Before the Test Run
82
Installing the Remote Controller Batteries
82
Test Run
82
Test Run Procedure
82
DIP Switch Settings for Optional Modes
83
Outdoor Unit DIP Switch Settings
83
Forced Cooling Operation Function
84
Location of DIP Switches on Multi F and Multi F MAX Outdoor Units
84
Reducing Power Consumption
85
Reducing Power Consumption Chart
85
Reducing Power Consumption Current Levels
85
Wiring Error Check
85
Reducing Power Consumption with Mode Lock
86
Mode Lock
87
Night Quiet Mode
87
Location of TACT-SW1
88
Night Quiet Mode with Mode Lock
88
PCB Display
88
PCB Display Information
88
Decoding the Error Display
89
Error Code Nomenclature Definitions
89
Error Code Tables
89
Troubleshooting Using Error Codes
89
Outdoor Unit Error Codes
90
LG Monitoring View (LGMV) Diagnostic Software
91
LGMV Monitoring Screen
91
LGMV Display
91
LGMV Cycleview Screen
92
LGMV Graph Screen
92
LG SIMS App and WLAN Module
93
Example of a SIMS WLAN Module Used with a Typical DFS System
93
Sims App Main Info Screen
93
LG Smart Inverter Monitoring System (SIMS)
93
SIMS App Screens
94
Maintenance Recommendations
95
Major Component Rough-In
96
Piping Material, Components, and Insulation
96
Brazing Practices
96
Installation Checklists and Worksheets
96
Condensate Pump / Drain Installation
97
Power Wire and Communications Cables
97
Multi F with Lgred Refrigerant Charge Worksheet
100
Multi F with LGRED Refrigerant Charge Calculations
100
Multi F MAX with LGRED Outdoor Unit Piping Specifications
101
Multi F MAX with LGRED Refrigerant Charge Calculations
101
Other manuals for LG LMU300HHV
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Service Manual
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LG LMU300HHV Specifications
General
Refrigerant
R410A
Phase
1
Voltage
208-230V
Power Supply
208-230V/60Hz/1Phase
Operating Temperature (Heating)
75 °F
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