LG LZ-H100GXH4 Air Conditioning Heat Recovery Ventilator With Humidifier Owner’s Manual

OWNER’S MANUAL
AIR
CONDITIONER

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

Safety precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect 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.
The meanings of symbols used in this manual are as shown below.

Installation

• Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
  – There is a risk of fire or electric shock.
• For electrical work, contact the dealer, seller, a qualified electrician, or an authorized service center.
  – Do not disassemble or repair the product. There is a risk of fire or electric shock.
• Always ground the product.
  – There is a risk of fire or electric shock.
• Install the panel and the cover of the control box securely.
  – There is a risk of fire or electric shock.
• Always install a dedicated circuit and breaker.
  – Improper wiring or installation may cause fire or electric shock
• Use the correctly rated breaker or fuse.
  – There is a risk of fire or electric shock.
• Do not modify or extend the power cable.
  – There is a risk of fire or electric shock.
• Do not install, remove, or re-install the unit by yourself (customer).
  – There is a risk of fire, electric shock, explosion, or injury.
• Be cautious when unpacking and installing the product.
  – Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
• For installation, 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.
  – It may cause injury, accident, or damage to the product.
• Do not let the ventilator run for a long time when the humidity is very high and a door or a window is left open.
  – Moisture may condense and wet or damage furniture.
• For re-installation of the installed product, always contact the dealer or an authorized service center.
  – There is a risk of fire, electric shock, explosion, or injury.
• Do not open the maintenance cover of the main body during operation.
  – Otherwise, it may cause electrical shock.
• Use the outdoor air suction hole with the net installed to ensure that birds could not come in.
  – Remove estrange things like the bird’s nest. Otherwise, it may cause a scarcity of indoor oxygen.
• Install the air intake where polluted air can not be directly sucked in.
  – It may cause various accidents, including suffocation, due to the suction of harmful gasses(CO, etc.)
• Install the product in a place that can support its weight.
  – Otherwise, it may cause an accident due to the falling of the product.
• Precautions must be taken to avoid the back-flow of gases into the room from the open flue of gas or other fuel-burning appliances

Operation

• Take care to ensure that the power cable could not be pulled out or damaged during operation.
  – There is a risk of fire or electric shock.
• Do not place anything on the power cable.
  – There is a risk of fire or electric shock.
• Do not touch(operate) the product with wet hands.
  – There is a risk of fire or electrical shock.
• Do not place a heater or other appliances near the power cable.
  – There is a risk of fire and electric shock.
• Do not allow water to run into electric parts.
  – It may cause There is a risk of fire, failure of the product, or electric shock.
• Do not store or use flammable gas or combustibles near the product.
  – There is a risk of fire or failure of product.
• 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
• If strange sounds, smell or smoke comes from the product. Turn the breaker off
  – There is a risk of electric shock or fire.
• Stop operation and close the window in a storm or hurricane. If possible, remove the product from the window before the hurricane arrives.
  – There is a risk of property damage, failure of the product, or electric shock.
• When the product is soaked (flooded or submerged), contact an authorized service center.
  – There is a risk of fire or electric shock.
  • Be cautious that water could not enter the product.
  – There is a risk of fire, electric shock, or product damage.
• Turn the breaker off when cleaning or maintaining the product.
  – There is a risk of electric shock.
• Don’t touch a dedicated circuit or breaker with wet hands.
  – There is a risk of electric shock.
• Use a firm stool or ladder when cleaning or maintaining the product.
  – Be careful and avoid personal injury.

CAUTION
Installation

• Use two or more people to 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. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
• If anyone other than a licensed Professional installs, repairs, or alters LG Electronics Air Conditioning Products, the warranty is voided.
  – All costs associated with repair are then the full responsibility of the owner.
• Do not install the unit in potentially explosive atmospheres.

Operation

• Do not expose the skin directly to cool air for long periods of time. (Don’t sit in the draft.)
  – This could harm to your health.
• Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer ventilator, not a precision refrigeration system.
  – There is a risk of damage or loss of property.
• Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
  – There is a risk of fire, electric shock, or damage to the plastic parts of the product.
• Do not step on or put anything on the product. (outdoor units)
  – There is a risk of personal injury and failure of product.
• Use a firm stool or ladder when cleaning or maintaining the product.
  – Be careful and avoid personal injury.
• 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 the use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.
• This appliance can be used by children aged 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 the 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.

Prior to operation

Preparing for operation

1. Contact an installation specialist for installation.
2. Plug in the power plug properly.
3. Use a dedicated circuit.
4. Do not use an extension cord.
5. Do not start/stop operation by plugging/unplugging the power cord.
6. If the cord/plug is damaged, replace it with only an authorized replacement part.

Usage

1. Being exposed to direct airflow for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended
   periods of time.
2. Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or other heating devices.
3. Do not use this ventilator for non-specified special purposes (e.g. preserving precision devices, food, pets, plants, and art objects). Such usage could damage the items.

Cleaning and maintenance

1. Do not touch the metal parts of the unit when removing the filter. Injuries can occur when handling sharp metal edges.
2. Do not use water to clean inside the ventilator. Exposure to water can destroy the insulation, leading to possible electric shock.
3. When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation. There is a possibility of injury if the unit’s power is accidentally triggered while cleaning the inner parts of the unit.
4. Ensure that the fan is switched off from the supply mains before removing the guard.

Service

For repair and maintenance, contact your authorized service dealer.

Introduction

Symbols used in this manual

This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the ventilator.
NOTICE This symbol indicates special notes.

Features

WARNING
This appliance should be installed in accordance with national wiring regulations. This guide acts as a guide to help to explain product features.
WARNING
Indoor unit ground wires are required for preventing electrical shock accidents during current leakage, communication disorder by noise effect, and motor current leakage  (without connection to pipe).

• 250 / 350 / 500 CMH

1. Maintenance cover
2. Air filter
   It prevents dust from clogging in total heat exchanger.
3. Total heat exchanger
   It changes temperature and humidity between supplying air and exhausted air.
4. Blower for exhaust air
   It is a fan for discharging the contaminated air to outdoor.
5. Control box
6. Blower for supply air
   It is a fan for inhaling exterior air into an indoor space.
7. Damper plate(Board)
   It converts exchanging mode between total heat ventilation and general ventilation.
8. Total heat exchanger holder
   It is used in guiding the installation of the total heat exchanger.

• The figure of the total heat exchanger can be different by the product model.
• The HEPA filter is an optional product exclusive for the ventilation system that is sold separately.

• 800 / 1 000 CMH

1. Maintenance cover
2. Air filter
   It prevents dust from clogging in the total heat exchanger.
3. Total heat exchanger
   It changes temperature and humidity between supplying air and exhausted air.
4. Blower for exhaust air
   It is a fan for discharging the contaminated air to outdoor.
5. Control box
6. Blower for supply air
   It is a fan for inhaling exterior air into an indoor space.
7. Damper plate(Board)
   It converts exchanging mode between total heat ventilation and general ventilation.
8. Total heat exchanger holder
   It is used in guiding the installation of the total heat exchanger.

• The form of the total heat exchanger varies according to models.
• The HEPA filter is an optional product exclusive to the ventilation system that is sold separately.

• 1 500 / 2 000 CMH

1. Maintenance cover
2. Air filter
   It prevents dust from clogging in the total heat exchanger.
3. Total heat exchanger
   It changes temperature and humidity between supplying air and exhausted air.
4. Blower for exhaust air
   It is a fan for discharging the contaminated air to outdoor.
5. Control box
6. Blower for supply air
   It is a fan for inhaling exterior air into an indoor space.
7. Damper plate(board)
   It converts exchanging mode between total heat ventilation and general ventilation.
8. Total heat exchanger holder
   It is used in guiding the installation of the total heat exchanger.

• The form of the total heat exchanger varies according to models.
• The HEPA filter is an optional product exclusive for the ventilation system that is sold separately.

Operating instructions (Accessory)

Name and function of remote controller

• Some functions may not be operated and displayed depending on the product type.
• It will display a strange value to the room temperature if the wired remote controller is not connected.

• Some functions may not be operated and displayed depending on the product type. Refer to remote controller in order to know detail functions.

Method to operate and select air volume – Interlinked operation with ventilation.

It is used when air conditioner is interlinked with ventilation product.
It is a function that cools and refreshes indoor air using the ventilation product at the same time operating the air conditioning function.

Ventilation interlinked operation

1. Press the button on the remote controller control panel. – It is only used when air conditioner and general ventilation is interlinked.
2. Pressing the ‘Start/Stop’ button in ventilation mode will start ventilation.
3. Pressing the button will change the ventilation operation mode.
   Pressing the operation selection button will change the mode in the order of ‘heat exchange → normal → automatic’
   ❈ It only displays on the remote controller display when it is in ventilation mode, and it displays the desired temperature when it returns to air condition mode.
4. Pressing the button in general ventilation mode will change airflow speed.
   Pressing the airflow speed button will change the mode in the order of ‘low → high → power’.
   If a CO2 sensor is installed, it can select from ‘low → high → power→ auto’.
5. Changing back to air conditioner mode
   1)Automatic Conversion : when no button is pressed for 15 seconds or longer, it automatically converts back to air conditioner mode.
   2) Manual conversion: pressing the button in ventilation mode will manually convert.

Method to operate and select air volume – Ventilation single operation

It is a function to cool and refresh the indoor air using general ventilation products.

Ventilation single operation

1. Press the button on the remote controller.
2. The pressing thebutton will change the ventilation mode.

In the case of heat exchange mode, the display is shown as below.

3 The pressing button will change the strength of the wind
– Pressing the button can select from ‘low → high → power’.
– If a CO2 sensor is installed, it can select from low → high → power → auto’.

Fast/energy-saving ventilation mode

It is a function to operate ventilation function more efficiently through the ventilation additional functions, fast / power saving settings.

Fast : ventilates fast

1. Press button in ventilation mode.
   – It converts in the order of ‘fast → power saving’ in ventilation mode.
2. ‘Fast’ is blinking on the display, and pressing the button will stabilize ‘fast’ icon, and the function is set.

3 Pressing button will exit the settings.

Power Saving : efficiently ventilates and performs power savings. 

1. Press the button in ventilation mode.
   – It converts in the order of ‘fast → power saving’ in ventilation mode.
2. ‘Power saving’ is blinking on the display, and pressing the button will stabilize ‘power saving’ icon, and the function is set.
   
3. Pressing the button will exit the settings.
   ❈ General ventilation and direct expansion ventilation have the same additional functions.
   ❈ Ventilation/heater/humidifier additional function settings are the same as air conditioner.

Characteristics

Ventilation via total heat exchanger
Exhausts indoor air via the total heat exchanger outdoor.

• The outdoor air heat exchanged is supplied to indoor. Operate the ventilator in the ventilation via total heat exchanger in summer/winter when cool/heat operation is done.

Normal ventilation

Exhausts the polluted indoor air directly via the total heat exchanger.

• Operate the ventilator in the normal ventilation in spring/autumn when the total heat exchanger is not required.

CAUTION
In case of high outdoor pollution degrees like yellow sand please pause the ventilator.

Maintenance and service

Handling and cleaning
To prevent the function of the ventilator from deteriorating, clean dust is adhered to the air filter and total heat exchanger regularly.
Cleaning cycle
– Air filter: More than once every 6 months.
– Total heat exchanger: More than once every 2 years (Cleaning cycle may increase according to pollution degree.)

Method to take each part-out

CAUTION
Take care to ensure that you could not damage it when taking the air filter out since there is a sharp part on it.
WARNING
Turn the breaker off when cleaning the product.
CAUTION
Gloves should be worn when doing maintenance work.
• 250 / 350 / 500 / 800 / 1 000 CMH

1. Remove the maintenance cover.
   Loosen a screw on the maintenance cover.
   Put the hands inside of the ceiling from the maintenance cover, and pull the maintenance cover-up.
   (Looser the hinge and detach the maintenance cover.)
   
2. Take the air filter out.
   Take the air filter with each contained to the left/right downside of the total heat exchanger. h If it adheres to the ceiling in reverse, it is equal to the left/right topside of the total heat exchanger.
   
3. Take the total heat exchanger out.
   Catch the handle and then take the total heat exchanger out from the main body. (2 units)

Maintenance and service

• 1 500 / 2 000 CMH

1. Remove the maintenance cover.
   Loosen a screw on the maintenance cover.
   Put the hands inside of the ceiling from the maintenance cover, and pull the maintenance cover up. (Looser the hinge and detach the maintenance cover.)
   
2. Take the air filter out.
   Take the air filter with each contained to the left/right downside of the total heat exchanger.  If it adheres to the ceiling in reverse, it is equal to the left/right topside of the total heat exchanger.
3. Take the total heat exchanger out.
   Catch the handle and then take the total heat exchanger out from the main body. (4 units)

Method to clean and replace each part

1. Cleaning of air filter
Clean once every 6 months.

• Clean dirt from the air filter using a vacuum cleaner or washing with water.
  (If dirt is conspicuous, wash with a neutral detergent in lukewarm water)
  
• After washing with water, dry well in the shade.
  (Do not expose the air filter to direct sunlight or heat from a fire when drying it)
• If the air filter is damaged, purchase it from the service center or professional agent.

2. Cleaning of total heat exchanger
Suck dust adhered to the surface of the total heat exchanger with a cleaner.

• Use the cleaner that is attached to the brush at its nozzle, and use a soft brush.
• Do not use a hard nozzle on the cleaner.
  (Otherwise, the surface of the total heat exchanger may be damaged.)
• Never wash the total heat exchanger with water.
• Replacement expenses are for consideration after 2 years from the purchasing date.
• Expenses are for consideration when you will contact the service center even within 2 years from the purchasing date.
• For service, always contact the dealer or an authorized service center.

Assembly and check after maintenance

WARNING
Turn the breaker off when cleaning the product.
CAUTION
Gloves should be worn when doing maintenance work.

1. Assembly of total heat exchanger
   Securely put the corner parts (4 parts) of the total heat exchanger into the holder for assembly and slide them into the inside of the main body.
   
2. Assembly of air filter
   Assemble the air filter into the holder structure of the total heat exchanger.
   • Take care to ensure that surface of the total heat exchanger could not be damaged.
   • Dust adhered to the total heat exchanger may cause deterioration of air volume.
   
3. Assembly of maintenance cover
   Fix the cover to the right hinge and fix it to the left side. (A nameplate adheres toward the reading direction).
   Tighten a screw on the maintenance cover.

Check item prior to notify a failure

LG Electronics Inc. Single Point of Contact (EU/UK) & EU Importer :
LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
Manufacturer :
LG Electronics Inc.
UK Importer :
LG Electronics U.K. Ltd,
Velocity 2, Brooklands Drive, Weybridge, KT13 0SL
Eco design requirement
• The information for Eco design is available on the following free access website.
https://www.lg.com/global/support/cedoc/cedoc  

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