Table of Contents
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INSTALLATION MANUAL
AIR CONDITIONER
• Please read this installation manual completely before installing the product.
• Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
• Please retain this installation manual for future reference after reading it
thoroughly.
TYPE :
Hydro Kit
P/NO : MFL67212810
(For High Temperature)
www.lg.com
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Table of Contents
Related Manuals for LG ARNH04GK3A2
Summarization of Contents
General Information
Model Information
Details specifications and model names for the Hydro Kit.
Installation
Transporting the Unit
Guidelines for safely lifting, moving, and handling the unit during installation.
Selection of the Best Location
Criteria for choosing an optimal and safe installation site for the unit.
Installation Space Requirements
Specifies minimum clearance and space needed around the unit for installation.
Foundation for Installation
Instructions on securing the unit properly to the installation surface.
Water Piping and Circuit Connection
Procedures and considerations for connecting the water pipes and circuit.
Water Cycle Configuration
Explains the closed-loop water pipe system and component arrangement.
Water Tank & Floor Heating Installation
Steps for installing the water tank or connecting to a floor heating system.
Strainer Installation
Guidance on installing the water strainer for optimal system performance.
Sanitary Water Tank & Kit Installation
Requirements and considerations for installing the sanitary water tank.
Water Tank Sensor Installation
Steps for installing the sensor within the water tank.
Installation Scenes
Illustrates various conceptual installation configurations for different applications.
Water Quality Requirements
Details on water quality standards and parameters that must be met.
Frost Protection Measures
Instructions on using antifreeze solutions to protect the system from freezing.
Refrigerant Piping Procedures
Steps for cutting, preparing, welding, and insulating refrigerant pipes.
Heat Recovery System Connection Precautions
Important considerations when connecting the unit to heat recovery systems.
Wiring Connection Guide
Detailed instructions for connecting power and communication cables.
Connecting Cables Specifications
Information on cable types, sizes, and installation distances.
Accessories Installation
Location of Accessories & External Parts
Identifies connection points for external accessories on the control board.
Wired Remote Controller Installation
Steps for mounting and connecting the wired remote controller.
Main Pump Connection
Guide for connecting the main circulation pump to the unit.
Water Tank Sensor PCB Connection
How to connect the sensor's housing to the control board connector.
Thermostat Installation Conditions
Recommended conditions and locations for thermostat installation.
Thermostat Wiring and Types
Details on compatible thermostats and how to wire them.
Thermostat Operation and Final Checks
Final checks and how the thermostat operates with the remote controller.
Remote Temperature Sensor Installation
How to install and connect the remote temperature sensor.
3Way Valve Installation and Wiring
Procedures for installing and wiring the 3-way flow control valve.
Dry Contact Installation
Steps for connecting the dry contact for external HVAC control.
System Set-Up
DIP Switch Setting Guide
Instructions for configuring system functions using DIP switches.
Group Control System Setup
How to configure the unit for master/slave group control operation.
Emergency Operation Modes and Levels
Explanation of emergency modes, troubles, and operational levels.
Installer Setting Mode
Guide to entering and using the installer setting mode for detailed configuration.
Function Code Settings and Summary
Overview of various function codes and their default/example values.
Common Setting Function Codes
Details on function codes for basic system configurations.
Temperature Range Setting Function Codes
Function codes for setting air and water temperature ranges.
Temperature Control Parameter Settings
Setting weather-dependent operation parameters based on outdoor air temp.
Disinfection Operation Setting
Configuration for sanitary tank disinfection cycles and parameters.
Sanitary Water Heating & Timer Settings
Parameters for controlling sanitary water heating and timers.
Thermal On/Off & Other Function Codes
Settings for thermal control, remote controller version, and water flow.
Test Run
Caution Before Operation Test
Pre-test checks to ensure proper operation and safety.
Operation Test of Water Pipe
Procedures for testing the water pipe system functionality.
Troubleshooting and Error Codes
Lists common errors, their causes, and resolution methods.
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