LZ-H100GBA5 ERV Heat Recovery Ventilation Unit

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Product Specifications

• Capacity: 150 CMH – 200 CMH
• Weight: 640 kg

Product Usage Instructions

Safety Precautions

Be sure to follow the safety precautions provided in the manual
to prevent any injury or damage.

Preparing for Operation

1. Contact an installation specialist for proper
   installation.

2. Plug in the power plug correctly.

3. Use a dedicated circuit for power supply.

4. Avoid using extension cords.

5. Do not start or stop the operation by directly plugging or
   unplugging the power cord.

6. If the supply cord is damaged, it must be replaced by the
   manufacturer or qualified personnel.

Service

1. For repair and maintenance, contact an authorized service
   dealer.

2. Always disconnect the appliance from the power source during
   service or part replacements.

Precautions for Installing a Wi-Fi Modem

Follow the instructions in the installation manual when
installing a Wi-Fi modem to ensure proper functioning.

FAQs

Q: What should I do if I notice dewing inside the main body in

winter?

A: In case of dewing inside the main body,
ensure that the product is installed within the insulated layer as
per the installation manual to prevent electrical shock or water
damage.

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Safety precautions
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
Installation · 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. · Do not modify or extend the power cable.
– There is risk of fire or electric shock.
Installation manual 3

Safety precautions
· 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.
· The fan is to be installed so that the blades are more than 2.3 m above the floor.
· 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 furniture.
· For re-installation of the installed product, always contact the dealer or an authorized service center. – There is 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 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.)
· Do not install this product in a refrigerated warehouse, heated swimming pool or other location where the temperature and humidity are significantly 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.
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Safety precautions
· 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)
· Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
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 dedicated 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, electric shock, or product damage. · Turn the breaker off when cleaning or maintaining the product.
– 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.)
Installation manual 5

Safety precautions
The following content is for models with the UVnano function. · Be sure to turn off the main power for installation, service, and repair of the
UV LED. – It may cause electric shock, injury, or death. · When installing, servicing, or repairing the UV LED, the modules provided by LG Electronics must be used. If necessary, please contact an LG Electronics Service Center. * UV LED Module Information : LTPLG35U275GSTWA · This product is equipped with a UVC lamp (UV LED). Do not stare at the UV LED. – Injury may occur. · If the UV LED is damaged or needs to be replaced, please contact an LG Electronics Service Center. – Injury may occur. · Do not operate the UV LED outside the product. – Injury may occur. · Do not remove the parts inside the product with UV risk symbols. UV C may be released from the UV LED. – Injury may occur. · Be careful as UC V may be released to the outside due to unintended use of the product or damage to the product. UV C can harm the eyes and skin even if the exposure is small. · Do not touch or clean the product while the UVnano function is operating. · The UV LED is a part that does not require cleaning. Do not separately clean parts with UV risk labels or the UV LED. – Injury may occur. · UVnano is a compound word of UV(ultraviolet)LED and nanometers, the unit of ultraviolet wavelength. · When the product is powered off or the access door is opened, the UVnano sterilization function stops. · If UV LED repair is required while using the UVnano function, a UV indicator occurs on the remote controller. · Depending on the model, some functions may not be displayed/operate or be different.
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Safety precautions
· This appliance contains a UV emitter. Do not stare at the light source. · Doors and access panels bearing the ultraviolet radiation hazard symbol
which may have UV-C spectral irradiance greater than 1,7 W/cm2 are provided with an interlock switch to interrupt the power to the UV-C lamps for your safety. Do not over-ride. · UV-C barriers bearing the ultraviolet radiation hazard symbol should not be removed. · For appliances with UV-C lamps, information on the replacement of UV-C lamps shall be given, including the model and/or part number. · If field installed, the factory specified UV-C germicidal lamp systems approved for use with the subject product shall be specified in the instructions by the specific model number. · This appliance is not intended to be accessible to the general public. · If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
! CAUTION
Installation · Don’t connect the ground wire to the window frame or water cock.
– There is risk of electric shock. · Do not install the product 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 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.
Installation manual 7

Safety precautions
· Do not install or use the product in places at risk of explosion. – It may cause fire or explosion.
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 ventilator, 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 anything on the product. – There is risk of personal injury and failure of product.
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Safety precautions
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 supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
Service
1. For repair and maintenance, contact your authorized service dealer. 2. The appliance shall be disconnected from its power source during service and when
replacing parts
Precautions for installing a Wi-Fi modem
· It should be installed by installation specialist. · The wireless router must be installed within 10m. · Install in a space without EMI interference. It may cause malfunction of the product. · If there is a wall or obstacle between the Wi-Fi modem and the wireless AP, the
communication may not be smooth. · If it is attached to a steel structure such as an H-beam, steel plate, indoor unit cabinet,
etc., the communication may not be smooth. · Use a 10m extension cable (sold separately) according to the installation situation, but
do not connect additionally exceeding 10m. · Install in a place 1cm or more away from a metal panel.
Installation manual 9

Introduction
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
· 150 / 200 CMH
Supply Air Fan

Exhaust Air Fan

Fine Filter Pre Filter

Exchanger

B

Control Box

Pre Filter

F

E

C

A

J

K G
D

H

Capacity
150 CMH 200 CMH

Unit : mm

Figure

Pitch of suspension fixture Nominal Duct connection flange

diameter

A

B

C

D

E

F

G

H

J

Duct pitch

K

L

Weight kg

640 640 320 580 673 287 125 122 193 61 400 120 23

C It necessary to secure sufficient space for maintenance more than the dimensions described in the product service.
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· 250 CMH
Blower for exhausting air
EA (Exhaust Air)

Introduction
Suspension fixture
RA (Return Air)

OA (Outdoor Air)

SA (Supply Air )

Blower for supplying air

F

Maintenance cover Control box

Total heat exchanger

Air filter

Capacity 250 CMH

Unit : mm

Figure

Pitch of suspension fixture Nominal Duct connection flange

diameter

A

B

C

D

E

F

G

H

J

Duct pitch

K

L

Weight kg

1 014 988 273 939 1 020 135 200 194 240 96 590 198 44

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

Installation manual 11

Introduction · 350 / 500 CMH
Blower for exhausting air
EA (Exhaust Air)

Suspension fixture
RA (Return Air)

OA (Outdoor Air)

SA (Supply Air )

Blower for supplying air

F

Maintenance cover Control box

Total heat exchanger

Air filter

Unit : mm

Capacity
350 CMH 500 CMH

Figure

Pitch of suspension fixture Nominal Duct connection flange

diameter

A

B

C

D

E

F

G

H

J

Duct pitch

K

L

Weight kg

1 014 988 273 939 1 020 135 200 194 240 96 590 198 44

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

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· 800 / 1 000 CMH

Introduction

Blower for exhausting air

Suspension fixture

EA (Exhaust Air)
OA (Outdoor Air)

RA (Return Air)

SA (Supply Air)
Blower for supplying air

F

Total heat exchanger

Maintenance cover

Control box

Air filter

Unit : mm

Capacity
800 CMH 1 000 CMH

Figure

Pitch of suspension fixture Nominal Duct connection flange

diameter

A

B

C

D

E

F

G

H

J

1 101 1 230 405 1 026 1 263 269 250 244 254 77

Duct pitch

K

L

Weight kg

567 519 62.8

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

Installation manual 13

Introduction · 1 500 / 2 000 CMH
EA OA
M

B

D
RA
SA

E

Maintenance cover Control box

A

J

F

H

G

C

K

L

Air filter

Total heat exchanger

Unit : mm

Capacity

Figure

Pitch of suspension fixture

Duct connection flange

Weight

A

B

C

D

E

F

G

H

J

K

L

M

Kg

1 500 CMH 2 000 CMH

1 351 1 230 822 1 031 1 288 363

244 254

77

340

350 130

156

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

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Installation
Installation map (150 / 200 CMH)

Installation

50 mm above

OA
More than 3 times the size
of the duct
EA

Insulator (Above PET
10 mm)

50 mm above 50 mm above RA
Inhalation Flexible duct
SA

1 m above

Maintenance space

1 m above

Duct slope: More than 1/30(wall side) obtaining of right distance (Preventing penetration of rain water)

30 mm above

640 mm above

Installation manual 15

Installation
Installation map (250 / 350 / 500 / 800 / 1 000 CMH)
Plane figure
RA grille

EA
Ventilator
OA

SA grille

Maintenance space

Inspection hatch

Front view

Duct slope: More than 1/30(wall side)

obtaining of right distance

(Preventing penetration of rain water)

Duct

Ceiling fixing bolt(Supplied by installer)

New type hood (Preventing penetration of rain water)

EA OA
Three dimension view

Ventilator

1m or more

1m or more

Inspection hatch

SA RA
SA grille RA grille

Maintenance cover Control box SA grille
Installation of maintenance cover
EA
Ventilator main body
OA

More than 600

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Maintenance space 600×600
Inspection hatch

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Installation map (1 500 / 2 000 CMH)

Plane figure

RA grille

Installation

EA
Ventilator
OA
Front view
Duct slope: More than 1/30(wall side) obtaining of right distance (Preventing penetration of rain water)
New type hood (Preventing penetration of rain water)
EA OA

Maintenance space
Inspection hatch

SA grille

Ceiling fixing bolt(Supplied by installer)

Three dimension view

Inspection hatch

RA RA SA

1m or more

1m or more RA grille

SA

SA grille

Maintenance cover Control box SA grille
Installation of maintenance cover
EA
Ventilator main body
OA
Maintenance space 600×600
Inspection hatch
Installation manual 17

More than 600

Installation
Installation of main body
Assembly of washer, nut Tighten the common washer and nut (more than 21 mm 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 50 mm under the ceiling fixing bracket.

Ceiling fixing bolt (M10) Nut
Spring washer Washer Nut

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.
Duct
Taping

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! 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 performed as in the left figure. Otherwise, it may cause reduction of air volume or abnormal noise.

Installation Heat insulating material
Aluminium
Main body Duct to OA
Duct connection flange

Rapid bending

Excessive bending

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 facilities(drain pan) and MD(Motorized Damper) at SA/RA duct.

Installation manual 19

Installation

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.

Cover of control box Screw

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.

150 / 200 CMH
M.D

Comm.

Not available Main Power

Cord clamp

(ACCESSORY) Outdoor GND Comm. (GN/YL)

GND

(BK)

GN/

BR BL YL Main Power

250 / 350 / 500 / 800 / 1 000 CMH

GND

Power M.D.

1 500 / 2 000 CMH

Power M.D.

GND

GND
GN/YL

1(L)

2(N)

M.D. 3(L) 4(N)

Not available
BR BL

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1(L)

2(N)

M.D. 3(L) 4(N)

Not available
BR BL

GND
GN/YL

Cord clamp

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Installation
! 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 Size Length External contact specifications

Sheathed wire (should be complied with 60245 IEC 53 standard) 150~800 CMH : 0.75 mm2 / 1 000~2 000 CMH : 1 or 1.5 mm2 MAX. 100 m 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.

Round pressure terminal

Power wire

Installation manual 21

Installation
How to connect remote controller(accessory)
Please connect indoor unit and remote controller using connection cable.

Please check if connector is normally connected. Connecting cable

Indoor Unit side

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

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Installation
How to use the filter check alarm function by filter clogging (800/1000/1500/2000 CMH)
· To enable the filter check alarm function, you must set “test run” in the installer settings on the remote control.
· After the test run is finished, the product will turn off. · During the test run, the remote control will not turn off the power. · Noise caused by operation mode change during test run may occur, but this is not a product error. · Check filter contamination before test run operation. · Except for rated voltage(220~240 V), it can be detected incorrectly. · It may be affected by the external environment, but this is not a product error.
! CAUTION
· If the test run function is not used, the filter check alarm function can not be used. · After T.A.B and filter and PCB replacement, test run must be performed.
· Some categories of the menu may not be displayed according to the function of the product, or the menu name may be different.
· For more details, refer to the remote controller manual.
Installation manual 23

Installation

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.

GND Signal wire
12 V

GND Signal wire

When controlling multiple indoor units with event communication function with one remote controller, 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 thenOn’ the power after 1 minutes elapsed sign up. – For ceiling type cassette and duct product group, change the switch setting of the indoor PCB.

12345678

1 switch Off: Master (Factory default setting)

12345678

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)
C 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.

GND

· When installing more than 2 units of wired Signal wire

remote controller to one air conditioner, set

12 V

one wired remote controller as master and

the others all as slaves, as shown in the

right picture.

B Y R

B Y R

GND Signal wire
12 V

· You cannot control the group as shown in the right for some products.
· Refer to the product manual for more detail.

Master

Slave

<When simultaneously connecting 2 sets of wired remote controller>

· 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.

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Installation
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.
1 If pressing button long for 3 seconds, it enters into remote controller setter setup mode. – If pressing once shortly, it enters into user setup mode. Please press more than 3 seconds for sure.
2 When you enter the setting mode initially, Function code is displayed on the bottom of the LCD screen.
Function code Value
· Some categories of the menu may not be displayed according to the function of the product, or the menu name may be different.
Installation manual 25

Installation
Accessory Model
· In the menu screen, press [<,>(left/right)] button to select the setting category, and press [(up)] button for 3 seconds to enter the password input screen for the installer setting.
· Input the password and press [OK] button to move to the installer setting list.

OK

OK

C Installer setting password Main screen menu setting service RMC version information SW Version Example) SW version : 1.00.1 a In the above case, the password is 1001.
· Some categories of the menu may not be displayed according to the function of the product, or the menu name may be different.
· For more details, refer to the remote controller manual.

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