LG ARNH10GK2A4 Owner's Manual

OWNER’S MANUAL

AIR-TO-WATER HEAT PUMP

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Please read this manual carefully before operating your set and retain it for future reference.

Hydro Kit (For Medium Temperature)

Original instruction

[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seong- san-gu, Changwon-si, Gyeongsangnam-do, KOREA

001

MFL67086810

www.lg.com

Rev.01_051018

Copyright © 2018 LG Electronics Inc. All Rights Reserved.

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Hydro Kit Owner’s Manual

TABLE OF CONTENTS

Safety Precautions .............................	3
Product Introduction ..........................	8
Operation Setting..............................	10
Temperature Setting.........................	12
Low Noise mode ...............................	15
Wi-Fi pairing......................................	17
Defrost Mode.....................................	19
Lock Setting ......................................	21
Date setting .......................................	23
Timer Setting.....................................	24
Schedule Setting...............................	29
Using Thermostat .............................	31
Maintenance and Service.................	34

FOR YOUR RECORDS

Write the model and serial numbers here:

Model #

Serial #

You can find them on a label on the side of each unit.

Installer's Name

Purchased Date

νStaple your receipt to this page in the event you need it to prove date of purchase or for warranty issues.

READ THIS MANUAL

Inside you will find many helpful hints on how to use and maintain your Hydro Kit properly. Just a little preventive care on your part can save you a great deal of time and money over the life of your product.

You'll find many answers to common problems in the chart of troubleshooting tips. If you review our chart of

Troubleshooting Tips first, you may not need to call for service at all.

PRECAUTION

•Contact the authorized service technician for repair or maintenance of this unit.

•Contact the installer for installation of this unit.

•Hydro Kit is not intended for use by young children or invalids without supervision.

•When the power cable is to be replaced, replacement work must be performed by authorized personnel only using only genuine replacement parts.

•Installation work must be performed in accordance with the National Electric Code by qualified and authorized personnel only.

•This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

2 Hydro Kit

Safety Precaution

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

νIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

WARNING	This symbol indicates the possibility of death or serious injury.
CAUTION	This symbol indicates the possibility of injury or damage.
		WARNING

•Always ground the product.

-There is a risk of electric shock.

•Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

-There is risk of fire or electric shock.

•Do not use a multi outlet. Always use this appliance on a dedicated circuit and breaker.

-It can cause electric shock or fire.

•For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Do not disassemble or repair the product by yourself.

-There is risk of fire or electric shock.

•Always ground the product as per the wiring diagram. Do not connect the ground wire to gas or water pipes lightening rod or telephone ground wire.

-There is risk of fire or electric shock.

•Install the panel and the cover of control box securely.

-There is risk of fire or electric shock due to dust , water etc.

•Use the correctly rated breaker or fuse.

-There is risk of fire or electric shock.

•Do not modify or extend the power cable. If the power cable or cord has scratches or skin peeled off or deteriorated then it must be replaced.

-There is risk of fire or electric shock.

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Hydro Kit Owner’s Manual 3

Safety Precaution

•For installation, removal or reinstallation , always contact the dealer or an Authorized Service Center.

-There is risk of fire, electric shock, explosion, or injury.

•Do not install the product on a defective installation stand. Be sure that the installation area does not deteriorate with age.

-It may cause product to fall.

•Never install the outdoor unit on a moving base or a place from where it can fall down.

-The falling outdoor unit can cause damage or injury or even death of a person.

•When the product is soaked (flooded or submerged) in water, contact an Authorized Service Center for repair before using it again.

-There is risk of fire or electric shock.

•Be sure to check the refrigerant to be used. Please read the label on the product.

-Incorrect refrigerant can prevent the normal operation of the unit.

•Don't use a power cord, a plug or a loose socket which is damaged.

-Otherwise it may cause a fire or electrical shock.

•Do not touch , operate, or repair the product with wet hands.

-There is risk of electric shock or fire.

•Do not place a heater or other heating appliances near the power cable.

-There is risk of fire and electric shock.

•Do not allow water to run into electric parts. Install the unit away from water sources.

-There is risk of fire, failure of the product, or electric shock.

•Do not store or use or even allow flammable gas or combustibles near the product.

-There is risk of fire.

•Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals.

-Improper or loose connections can cause heat generation or fire.

•Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after installation or service and then tear away and throw away the plastic packaging bags.

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Safety Precaution
and then Turn on the power.
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- Children may play with them and cause injury.
• Make sure to check that the power device is not dirty, loose or broken
- Dirty, loose or broken power device can cause electric shock or fire.
• In outdoor unit the step-up capacitor supplies high voltage electricity to
the electrical components. Be sure to discharge the capacitor
completely before conducting the repair work.
- An charged capacitor can cause electrical shock.
• When installing the unit, use the installation kit provided with the
product.
- Otherwise the unit may fall and cause severe injury.
• Be sure to use only those parts which are listed in the service parts list.
Never attempt to modify the equipment.
- The use of inappropriate parts can cause an electrical shock,
excessive heat generation or fire.
• Do not use the product in a tightly closed space for a long time.
Perform ventilation regularly.
- Oxygen deficiency could occur and hence harm your health.
• Do not open the front cover or grille of the product during operation.
(Do not touch the electrostatic filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or product failure.
• If strange sounds, smell or smoke comes from product, immediately
turn the breaker off or disconnect the power supply cable.
- There is risk of electric shock or fire.
• Ventilate the product room from time to time when operating it together
with a stove, or heating element etc.
- Oxygen deficiency can occur and hence harm your health.
• Turn the main power off when cleaning or repairing the product.
- There is risk of electric shock.
• Take care to ensure that nobody especially kids could step on or fall
onto the outdoor unit.
- This could result in personal injury and product damage.
• Take care to ensure that power cable could not be pulled out or
damaged during operation.
- There is risk of fire or electric shock.
• Do not place ANYTHING on the power cable.

Hydro Kit Owner’s Manual 5

Safety Precaution

-There is risk of fire or electric shock.

•When flammable gas leaks, turn off the gas and open a window for ventilation before turning the product on.

-Do not use the telephone or turn switches on or off. There is risk of explosion or fire.

CAUTION

•Two or more people must lift and transport the product.

-Avoid personal injury.

•Do not install the product where it will be exposed to sea wind (salt spray) directly.

-It may cause corrosion on the product.

•Keep level even when installing the product.

-To avoid vibration or noise.

•Do not install the product where the noise or hot air from the outdoor unit could damage or disturb the neighborhoods.

-It may cause a problem for your neighbors and hence dispute.

•Always check for gas (refrigerant) leakage after installation or repair of product.

-Low refrigerant levels may cause failure of product.

•Do not use the product for special purposes, such as preserving foods, It is not a precision refrigeration system.

-There is risk of damage or loss of property.

•Do not block the inlet or outlet of air flow.

-It may cause product failure.

•Use a soft cloth to clean. Do not use harsh detergents, solvents or splashing water etc .

-There is risk of fire, electric shock, or damage to the plastic parts of the product.

•Do not step on or put anyting on the product. (outdoor units)

-There is risk of personal injury and failure of product.

•Do not insert hands or other objects through the air inlet or outlet while the product is operating.

-There are sharp and moving parts that could cause personal injury.

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Safety Precaution
• If the refrigerant gas leaks during the repair, do not touch the leakaing
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• Be cautious when unpacking and installing the product.
- Sharp edges could cause injury.
refrigerant gas.
- The refrigernat gas can cause frostbite (cold burn)
• Do not tilt the unit when removing or uninstalling it.
- The condensed water inside can spill.
• If the refrigerant gas leaks during the installation, ventilate the area
immediately.
- Otherwise it can be harmfull for your health.
• Dismantling the unit, treatment of the refrigerant oil and eventual parts
should be done in accordance with local and national standards.
• Do not expose your skin or kids or plants to the cool or hot air draft.
- This could harm to your health.
• Use a firm stool or ladder when cleaning, maintaining or repairing the
product at an height.
- Be careful and avoid personal injury.
• This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities or
lack of experience and knowledge if they have been given supervision
or instruction concerning use of the appliance in a safe way and
understand the hazards involved. Children shall not play with the
appliance. Cleaning and user maintenance shall not be made by
children without supervision.
• Children should be supervised to ensure that they do not play with the
appliance.

Hydro Kit Owner’s Manual 7

Product Introduction

Product Introduction

Typical Installation Scene

<Type 1>

Water Out

Gas side

Liquid side

Water In

Drain

<Type 2>

Water Out

Communication

Cable

Power Cable

Gas Side

Liquid Side

Water In

Communication

Cable

Power Cable

Gas Side

Liquid Side

Water Out

Water In

CAUTION

Use of power supply separate power for the indoor unit. (Do not connect and use from the power terminal of the outdoor unit.)

8 Hydro Kit

Remote Controller

Product Introduction

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50

Operation display window

Back button	OK	On/Off Button
Up/Down/Left/Right		OK Button
Button

	Operation display window	Operation and Settings status display
	Back button	When you move to the previous stage from the menu’s
		setting stage
	Up/down/left/right button	When you change the menu’s setting value
	OK button	When you save the menu’s setting value
	On/Off button	When you turn ON/OFF the air conditioner

Hydro Kit Owner’s Manual 9

Operation Setting

Operation Setting

Operation mode

You can easily control the desired operation mode.

In the main screen, press [<, > (left/right)] button to select the operation mode or home leave or hold category, and press [ , (up/down)] button to set the operation mode.

Some products may not support some operation modes.

	Mode	Description
	Cool	The product yields cool water to use in FCU cooling.
	Heat	The product yields hot water to use in under floor heating or FCU heating.
	AI / Auto	In this mode, heating setpoint is automatically determined by pre-defined
		temperature profile.

AI / Auto operation

This mode is only applied to heating.

In order to save energy and to give highest comfort, setting temperature will follow outside temperature. If outdoor temperature decreases, heating capacity for the house will increase automatically in order to keep same room temperature. All parameters will be set by installer during start-up procedure and will be adapted to the site characteristic.

1. Select AI / Auto mode.

10 Hydro Kit

2. Select the desired temperature category

3. Adjust the desired temperature level by press [ , (up/down)] button.

η Note

Decreasing temperature profile by 3°C (based on room air temperature) <Temperature adjust step (unit : °C)>

-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5Cold Hot

Operation Setting

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Hydro Kit Owner’s Manual 11

Temperature Setting

Temperature Setting

You can easily control to the desired temperature.

• In the main screen, press [<, > (left/right)] button to select the desired temperature category, and press [ , (up/down)] button to set the desired temperature.

- In the cooling, heating, and AI/auto mode, the desired temperature control is possible.

Mode	Description
Room	Room temperature setting is available when remote room air sensor (sold
temperature	separately) is installed
Leaving water	If the desired temperature is lower than the water temperature, the heating
temperature	is not performed.
	Set the desired temperature higher than the water temperature.
DHW tank	DHW tank temperature setting is available when DHW tank is installed.
temperature

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