LG LZ-H025GBA4 Eco ERV Heat Recovery Ventilation Unit

Product Information

Specifications:

• Model: Ventilator

• Power Supply: Dedicated circuit

• Safety Precautions: Follow all instructions to prevent injury or property damage

• Installation: Contact dealer or authorized service center for
  proper installation

• Operation: Ensure proper connections and ventilation to avoid accidents

Product Usage Instructions

Safety Precautions:

• Always ground the product.
• Use a dedicated circuit and breaker.
• Do not modify the power cable.
• Do not install or re-install the unit yourself.
• Ensure proper installation by contacting a dealer or service center.
• Avoid running the product for extended periods in high humidity with open doors/windows.
• Install air intake and outdoor air suction hole properly.
• Avoid installation in extreme temperature or humidity locations.

Operation:

• Avoid touching dedicated circuits or breakers with wet hands.
• Disconnect power supply plug or turn off breaker if not in use for a long time.
• In case of flammable gas leaks, turn off gas and ventilate before using the product.
• Avoid water entering the product and turn off breaker during cleaning or maintenance.
• Ensure proper installation of outside ducts with proper insulation and tilt.

Frequently Asked Questions (FAQ):

1. Q: Can I install the product by myself?
   A: It is recommended to contact a dealer or authorized service center for installation to ensure safety and proper functioning of the product.

2. Q: What should I do if the product gets soaked?
   A: In case of the product being soaked, flooded, or submerged, contact an authorized service center immediately for assistance.

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.
Meanings of symbols used in this manual are as shown below.

• Be sure not to do.
• Be sure to follow the instruction.

WARNING **

**

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

• There is 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 risk of fire or electric shock.

Always ground the product.

• 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.

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 risk of fire or electric shock.

Safety precautions

Do not modify or extend the power cable.

• There is risk of fire or electric shock.

Do not install, remove, or re-install the unit by yourself (customer).

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

Be cautious when unpacking and installing the product.

• Sharp edges could cause injury.

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 product 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 furni-ture.

For re-installation of the installed product, always contact the dealer or an author-ized service center.

• There is risk of fire, elec-tric shock, explosion or injury.

Do not open the main-tenance 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 scarcity of indoor oxygen.

Install the air intake where polluted air can not be directly sucked in.

• It may cause various accidents, including suffo-cation, due to the suction of harmful gasses(CO, etc.)

Do not install this product in a refrigerat-ed warehouse, heated swimming pool or other location where the temperature and humidity are signifi-cantly different.

• There is risk of electrical shock, malfunctioning.

Install this product in an environment where the temperature ranges from –10°C to +45°C and the relative humidity is less than 80%. It condensation is expected to form, heat up the fresh outside air using a duct heater etc. Install this product in and environments where the outside air intake meets the following conditions: temperature range is between –15°C and+40°C and the relative humidity is 80% or less. Use the designated electrical wires for the terminal board connections, and connect the wires securely so that they will not become disconnected.(Failure to ensure proper connections may cause fire.) When passing metal ducts through wooden buildings clad with metal laths, wire laths or metal, these ducts must be installed in such a way that they will not make electrical contact with the metal laths, wire laths or metal sheets. (Power leakage can cause ignition)

Operation

When the product is soaked (flooded or submerged), contact an authorized service center.

• There is risk of fire or eletric shock.

Don’t touch a dedicat-ed circuit or breaker with wet hands.

• There is risk of electric shock.

When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.

• There is risk of product damage or failure, or unintended operation.

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

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

Be cautious that water could not enter the product.

• There is risk of fire, elec-tric shock, or product damage.

Turn the breaker off when cleaning or maintaining the prod-uct.

• There is risk of electric shock.

The outside ducts must be tilted at a gradient (1/30 or more) down toward the outdoor area from the ventilator unit, and properly insulated. (The entry of rain water may cause power leaks, fire or damage to household property.)
Glove should be worn when doing the installation work. (There is risk of injury.)

CAUTION

Don’t connect the ground wire to the window frame or water cock.

• There is risk of electric shock.

Do not install the prod-uct at a smoky and oily place like kitchen or factory.

• Otherwise. oil may adhere to the filter or heating exchanger and cause trouble.

Install the product in an insulated space from outdoor air.

• In case of installing the product outside of the insulated layer, dewing occurs inside of the main body in winter. And it causes electrical shock or falling of condensed water.

Keep level even when installing the product.

• To avoid vibration or water leakage.

Use two or more peo-ple 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 con-denser and evaporator fins, could cause product malfunction or inefficient operation

Operation

Use a soft cloth to clean. Do not use harsh detergents, wax or thinner, etc.

• Otherwise, color or surface of the oroduct mav deteriorate.

Clean the filter and the heat exchanger regularly and use the gloves for cleaning.

• Adhering to a mass of dust may cause the deterioration of air volume.

Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer venti-lator, 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.

Do not step on or put anyting on the product.

• There is risk of personal injury and fail-ure of product.

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 product.

NOTICE: This symbol indicates special notes.

Feature dimension diagram

Model : LZ-H025GBA4 / LZ-H035GBA4

Unit : mm

Model| Figure| Pitch of suspension fixture| Nominal diameter| Duct connection flange| Duct pitch| Weight
---|---|---|---|---|---|---
A| B| C| D| E| F| G| H| J| K| L| kg
LZ-H025GBA4 LZ-H035GBA4| 1 014| 988| 273| 939| 1 025| 135| 200| 194| 252| 96| 590| 198| 44

• It necessary to secure sufficient space for maintenance more than the dimensions described in the product service.

Model : LZ-H050GBA4

Unit : mm

Model| Figure| Pitch of suspension fixture| Nominal diameter| Duct connection flange| Duct pitch| Weight
---|---|---|---|---|---|---
A| B| C| D| E| F| G| H| J| K| L| kg
LZ-H050GBA4| 1 014| 988| 273| 939| 1 025| 135| 200| 194| 252| 96| 590| 198| 44

• It necessary to secure sufficient space for maintenance more than the dimensions described in the product service.

Model : LZ-H080GBA4 / LZ-H100GBA4

Unit : mm

Model| Figure| Pitch of suspension fixture| Nominal diameter| Duct connection flange| Duct pitch| Weight
---|---|---|---|---|---|---
A| B| C| D| E| F| G| H| J| K| L| kg
LZ-H080GBA4 LZ-H100GBA4| 1 062| 1 140| 365| 987| 1 176| 180| 250| 242| 253| 98| 513| 481| 62

• It necessary to secure sufficient space for maintenance more than the dimensions described in the product service.

Model : LZ-H150GBA4 / LZ-H200GBA4

Unit : mm

Model| Figure| Pitch of suspension fixture| Duct connection flange| Duct pitch| Weight
---|---|---|---|---|---
A| B| C| D| E| F| G| H| J| K| L| M| N| O| P| Q| Kg
LZ-H150GBA4 LZ-H200GBA4| 1 313| 1 140| 738| 987| 1 176| 339| 242| 253| 98| 340| 350| 130| 410| 482| 233| 271| 140

• It necessary to secure sufficient space for maintenance more than the dimensions described in the product service.

Installation

Installation map (LZ-H025GBA4/LZ-H035GBA4/LZ-H050GBA4/LZ-H080GBA4/LZ- H100GBA4)
Plane figure

Front view

Three dimension view

Installation of maintenance cover

Installation map (LZ-H150GBA4/LZ-H200GBA4)
Plane figure

Front view

Three dimension view

Installation of maintenance cover

Installation of main body
Assembly of washer, nut
Tighten the common washer and nut (more than 21mm for the outside diameter of M10, to the commercial ceiling fixing bolt (M10) as shown in the right figure.

• For the ceiling fixing bolt, perform work less than 50mm under the ceiling fixing bracket.

Connection of duct

After securely connect the duct with the duct connection flange, wrap it with a commercial aluminium tape so that air cannot be leaked. Adjust the duct from the ceiling so that no force is applied to the main body of the ventilation system. Always use two ducts at the outdoor with the heat insulating material for prevention of dewing.

CAUTION:

• Check that there are no foreign materials (paper, vinyl, etc) or cutoff powders in the duct before connecting the duct.

• Take care so that shock may not be applied to the damper plate within the main body when performing the duct connection work.

• It is recommended to perform adiabatic treatment even to the duct pipe at the indoor side where ambient temperature is expected higher than room temperature when the main body of the ventilation system for cooling in summer.

• Take care so that work may not be per-formed as in the left figure. Otherwise, it may cause reduction of air volume or abnormal noise.

Too close bending to outlet

Rapid reduction of duct diameter

CAUTION:
In -10℃ below ambient temperature, when ventilation is installed the equivalent space in the outdoor and outdoor, It may cause condensation, you must install drainage facili-ties(drain pan) and MD(Motorized Damper) at SA/RA duct.

Method to connect power cord

• Release two screws and then open the cover of the control box.
• With reference to the below wiring diagram, accurately connect the main power cords into the terminal block.

After inserting the power cord into the bushing, fully insert it into the terminal block for connection.

• Fix the power cords with the clamp.
• Make sure that the power cords may not be removed by pulling them.

CAUTION
The power cord connected to the unit should be selected according to the following specifications .

WARNING
Indoor unit ground wires are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe).

Wiring specifications

Wiring specifications| Sheathed wire (should be complied with 60245 IEC 53 standard)
---|---
Size| 0.75 – 1.25 mm2
Length| MAX. 100 m
External contact specifications| Normally closed contact (Current tolerance 10 mA – 0.5 A)

Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.

How to connect remote controller(accessory)

• Please connect indoor unit and remote controller using connection cable.

Please use extension cable if the distance between wired remote controller and indoor unit is more than 10m.

CAUTION

• When installing the wired remote controller, do not bury it in the wall. (It can cause damage in the temperature sensor.)
• Do not install the cable to be 50m or above.
• (It can cause communication error.)
• When installing the extension cable, check the connecting direction of the connector of the remote controller side and the product side for correct installation.
• If you install the extension cable in the opposite direction, the connector will not be connected.
• Specification of extension cable: 2547 1007 22# 2 core 3 shield 5 or above.

Group control

When installing more than 2 units of air conditioner to one wired remote controller, please connect as the right figure.

• If it is not event communication indoor unit, set the unit as slave.
• Check for event communication through the product manual.

When controlling multiple indoor units with event communication function with one remote con-troller, you must change the master/slave setting from the indoor unit.

• Indoor units, the master/slave configuration of the product after completion of indoor unit power ‘Off’ and then ‘On’ the power after 1 minutes elapsed sign up.
• For ceiling type cassette and duct product group, change the switch setting of the indoor PCB.

1 switch Off: Master (Factory default setting)

1 switch On: Slave

• For wall-mount type and stand type product, change the master/slave setting with the wireless remote controller. (Refer to wireless remote controller manual for detail)
• When installing 2 remote controllers to one indoor unit with event communication function, set the master/slave of the remote controller. (Refer to remote controller master/slave selection) When controlling the group, some functions excluding basic operation setting, fan level min/mid/max, remote controller lock setting and time setting may be limited.
• When installing more than 2 wired remote controllers to one air conditioner, please connect as the right picture.

< When simultaneously connecting 2 sets of wired remote controller>

• When installing more than 2 units of wired remote controller to one air conditioner, set one wired remote controller as master and the others all as slaves, as shown in the right picture.
• You cannot control the group as shown in the right for some products.
• Refer to the product manual for more detail.
• When controlling in groups, set the master/slaver of the remote controller. Refer to Installer setting section on how to set master/slave for more detail.

Installer setting -How to enter installer setting mode
CAUTION
Installer setting mode is to set the detail function of the remote controller.
If the installer setting mode is not set correctly, it can cause problems to the product, user injury or property damage. This must be set by an certificated installer, and any installation or change that is carried out by a non-certificated person should be responsible for the results. In this case, free service cannot be provided.

Some categories of the menu may not be displayed according to the function of the product, or the menu name may be different.

Installer setting code table

General ventilation product

Unit-(40)](https://manuals.plus/wp-content/uploads/2024/02/LG-LZ-H025GBA4 -Eco-ERV-Heat-Recovery-Ventilation-Unit-40.png)
4| EA(Exhaust Air) ESP| 04
5| Product direction| 05| 01 : Normal
02 : Opposite
6| Quick refresh priority| 06| 01 : Supply air first
02 : Exhaust air first
7| Master setting| 07| 00 : Slave
01 : Master
8| Dry contact| 09| 00 : Auto-off
01 : Auto-on
9| Release of 3 minute delay| 10| 01 : Set
10| Zone state test run| 11| 01 : Variable
02 : Fixed

• Some contents may not be displayed depending on the product function

Test running

• 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 oper-ating the air conditioning function.

Method to operate and select air volume – Ventilation single operation

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

In case of finding a problem at a test running

mode for protecting total heat exchanger.
Is air filter, total heat exchanger clogged severely?| Follow cleaning and changing method.
Are the PCB and remote controller rightly connected?| Connect rightly PCB and remote controller.
The fan doesn’t run| “Is the outdoor temperature the limit temperature? (Less than -10°C (14°F), more than 45°C (113°F))”| Switch on Option No. 5. Repower the product and check whether it works or not. Switch off Option No. 5. and repower the product once again.
Even though you push the but- ton of remote controller, any function doesn’t work.| Is the icon ”  ” displaying on remote controller?| It’s child lock mode. Refer to remote controller.

Airborne noise emission
The A-weighted sound pressure emitted by this product is below 70 dB.

• The noise level can vary depending on the site.

The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a correlation between the emission and exposure levels, this cannot be used reliably to determine whether or not further precautions are required. Factor that influence the actual level of exposure of the workforce include the characteristics of the work room and the other sources of noise, i.e. the number of equipment and other adjacent processes and the length of time for which an operator exposed to the noise. Also, the permissible exposure level can vary from country to country. This information, however, will enable the user of the equipment to make a better evaluation of the hazard and risk.

Available accessories

• Remote controller (PQRCVSL0/PQRCVSL0QW)
• F7 filter (AHFT035H0/AHFT050H0/AHFT100H0)
• CO2 sensor (AHCS100H0)
• PI485 gateway

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