LG LMU420HHV Manuals

Manuals and User Guides for LG LMU420HHV. We have 3 LG LMU420HHV manuals available for free PDF download: Installation Manual, Service Manual

LG LMU420HHV Installation Manual (103 pages)

Multi-Zone Heat Pump Systems with LGRED 1.5 to 3.5 Tons

Brand: LG | Category: Heat Pump | Size: 14.82 MB

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
Installation

17
- Placement Considerations
  18
- Mounting / Anchoring
  28
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
- 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
Refrigerant Piping System Installation

46
Electrical System Installation

58
Final Installation Procedures

73
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
Installation Checklists and Worksheets

96

LG LMU420HHV Service Manual (93 pages)

Brand: LG | Category: Air Conditioner | Size: 15.46 MB

Table of Contents

2
- Part 1 General Information
  3
- Safety Precautions
  4
- Model Line up
  7
- Nomenclature
  10
Part 2 Functions & Controls

14
- List of Functions & Accessory
  15
- Air Flow
  17
- Auto Swing (Left & Right)
  17
- Auto Swing (up & Down)
  17
- Chaos Swing (Up/Down)
  17
- Air Flow Step
  18
- Chaos Wind (Auto Wind)
  18
- Jet Cool Mode Operation
  18
- Swirl Wind Swing
  18
- Air Purifying
  19
- PLASMA Air Purifying System
  19
- External Static Pressure) Setting
  20
- Installation Functions
  20
- Hot Start
  21
- Reliability
  21
- Self-Diagnosis Function
  21
- Soft Dry Operation
  21
- Convenience Functions & Controls
  22
- Cooling & Heating Operations
  22
- Auto Cleaning Operation
  23
- Auto Operation (Artificial Intelligence)
  23
- Auto Restart Opeartion
  24
- Child Lock Function
  25
- Forced Operation
  25
- Group Control
  26
- Sleep Timer Operation
  27
- Timer(On/Off)
  27
- Weekly Program
  27
- Two Thermistor Control
  28
- Auto Elevation Grille
  29
- Low Ambient Control
  29
- Space Control
  29
- Special Function & KIT
  29
- Defrost Control(Heating)
  31
Part 3. Basic Control

32
- Part 3 Basic Control
  32
- Compressor Control
  33
- EEV( Electronic Expansion Valve) Control
  33
- Normal Operation
  33
- Defrost Control
  34
- Oil Return Control
  34
- Discharge Temperature Control
  35
- High Pressure Protection Control
  35
- Input Current Control
  35
- Low Pressure Protection Control
  35
- Protection Control
  35
- Part 4 Test Run
  36
- Check before Test Run
  37
- Test Run Flow Chart
  38
- Test Runing
  39
Part 5. Trouble Shooting

41
- Part 5 Trouble Shooting Guide
  41
- Error Indicator (Indoor)
  42
- Self-Diagnosis Function
  42
- Error Indicator (Outdoor)
  43
- Pump down
  44
- Evacuation
  45
- Gas Charging
  46
- Cycle Part
  47
- Electronic Parts
  48
- The Product Doesn T Operate at All
  48
- The Compressor/Outdoor Fan Are Don't Operate
  49
- The Product Doesn't Operate with the Remote Controller
  49
- When Indoor Fan Does Not Operate
  51
- When the Louver Does Not Operate
  52
- Troubleshooting Indoor Error
  53
- Troubleshooting Outdoor Error
  59

LG LMU420HHV Service Manual (11 pages)

Brand: LG | Category: Air Conditioner | Size: 4.1 MB

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LG LMU420HHV Manuals

LG LMU420HHV Installation Manual (103 pages)

Table of Contents

Safety Instructions

General Data

Installation

General Refrigerant Piping System Information

Refrigerant Piping Insulation

Refrigerant Piping System Installation

Electrical System Installation

Final Installation Procedures

LG Monitoring View (LGMV) Diagnostic Software

LG Smart Inverter Monitoring System (SIMS)

Maintenance Recommendations

Installation Checklists and Worksheets

LG LMU420HHV Service Manual (93 pages)

Table of Contents

Table of Contents

Part 2 Functions & Controls

Part 3. Basic Control

Part 5. Trouble Shooting

LG LMU420HHV Service Manual (11 pages)

Table of Contents

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