LG LZ-H025GBA4 User manual

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.
VENTILATOR
Original instruction
INSTALLATION MANUAL
AIR
CONDITIONER
Copyright © 2016 - 2018 LG Electronics Inc. All Rights Reserved.
MFL67855535
Rev.00_080118
www.lg.com
001
РУССКИЙ ЯЗЫК
УКРАÏНСЬКА
ҚАЗАҚ ТІЛІ
БЕЛАРУСКАЯ МОВА
OʻZBEK TILI
ENGLISH

Table of contents
2Ventilator
3 SAFETY PRECAUTIONS
7 INTRODUCTION
7 Symbols used in this manual
7 Feature dimension diagram
11 INSTALLATION
11 Installation map
13 Installation of main body
13 Connection of duct
14 Standards for model
15 Method to connect power cord
16 How to connect remote controller(accessory)
17 Group control
18 Installer Setting -How to enter installer setting mode
20 TEST RUNNING
20 Method to operate and select air volume – Interlinked operation with ventilation.
21 Method to operate and select air volume – Ventilation single operation
22 In case of finding a problem at a test running
22 Airborne noise emission
TABLE OF CONTENTS

Safety precautions
Installation manual 3
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.
Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
Be sure not to do.
Be sure to follow the instruction.
ENGLISH
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.
WARNING
!
WARNING
CAUTION
!
!

Safety precautions
4Ventilator
• 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 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.
• 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.)

Safety precautions
Installation manual 5
ENGLISH
• 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 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.)

Safety precautions
6Ventilator
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.
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 anyting on the product.
- There is risk of personal injury and failure of product.
CAUTION
!

Introduction
Installation manual 7
ENGLISH
Feature dimension diagram
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
product.
This symbol indicates special notes.
NOTICE
Blower for exhausting air
Blower for supplying air
Control box
Maintenance cover
Suspension fixture
Total heat exchanger
Air filter
F
RA
(Return Air)
SA
(Supply Air )
OA
(Outdoor Air)
EA
(Exhaust Air)
Model : LZ-H025GBA4 / LZ-H035GBA4
Model
1 014 988 273 939 1 025 135 200 194 252 96 590 198 44
A B C D E F G H J K L kg
LZ-H025GBA4
LZ-H035GBA4
Figure Duct pitch WeightPitch of suspension fixture Duct connection flange
Nominal
diameter
h It necessary to secure sufficient space for maintenance more than the dimensions described in the
product service.
Symbols used in this manual
Introduction
Unit : mm

Introduction
8Ventilator
Blower for exhausting air
Blower for supplying air
Control box
Maintenance cover
Suspension fixture
Total heat exchanger
Air filter
F
RA
(Return Air)
SA
(Supply Air )
OA
(Outdoor Air)
EA
(Exhaust Air)
Model : LZ-H050GBA4
Model
1 014 988 273 939 1 025 135 200 194 252 96 590 198 44
A B C D E F G H J K L kg
LZ-H050GBA4
Figure Duct pitch WeightPitch of suspension fixture Duct connection flange
Nominal
diameter
Unit : mm
h It necessary to secure sufficient space for maintenance more than the dimensions described in the
product service.

Introduction
Installation manual 9
ENGLISH
Blower for exhausting air
Blower for
supplying air
Control box
Suspension fixture
Maintenance cover
Total heat exchanger
Air filter
F
RA
(Return Air)
SA
(Supply Air)
OA
(Outdoor Air)
EA
(Exhaust Air)
Model : LZ-H080GBA4 / LZ-H100GBA4
Model
1 062 1 140 365 987 1 176 180 250 242 253 98 513 481 62
A B C D E F G H J K L kg
LZ-H080GBA4
LZ-H100GBA4
Figure Duct pitch WeightPitch of suspension fixture Duct connection flange
Nominal
diameter
Unit : mm
h It necessary to secure sufficient space for maintenance more than the dimensions described in the
product service.

Introduction
10 Ventilator
Control box
Maintenance cover
EA
OA
RA
SA
B
C
D
E
NO
F
A
Air filter Total heat exchanger
K
L
JM
G
H
Model : LZ-H150GBA4 / LZ-H200GBA4
h It necessary to secure sufficient space for maintenance more than the dimensions described in the
product service.
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 Kg
LZ-H150GBA4
LZ-H200GBA4 1 313
1 140 738 987 1 176 339 242 253 98 340 350 130 410 482 140

Installation
Installation manual 11
ENGLISH
RA grille
SA grille
Maintenance space
Inspection hatch
Ventilator
EA
OA
Duct
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)
Ceiling fixing bolt(Supplied by installer)
RA grilleSA grille
Ventilator
Inspection hatch SA
EA
OA RA
1 m or more 1 m or more
Installation map (LZ-H025GBA4/LZ-H035GBA4/LZ-H050GBA4/LZ-H080GBA4/LZ-H100GBA4)
Plane figure
Front view
Maintenance cover
Control box
SA grille
Ventilator
main body
Maintenance space
More than 600
EA
OA
Inspection hatch
600x600
Three dimension view
Installation of maintenance cover
Installation

Installation map (LZ-H150GBA4/LZ-H200GBA4)
RA grille
SA grille
Inspection
hatch
Maintenance
space
Ventilator
EA
OA
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)
Ceiling fixing bolt(Supplied by installer)
RA grille
SA grille
Inspection
hatch
SA SA
EA
OA
RA RA
1 m or more 1 m or more
Plane figure
Front view
Maintenance cover
Control box
SA grille
Three dimension view
Installation of maintenance cover
Ventilator
main body
Maintenance space
More than 600
EA
OA
Inspection hatch
600x600
12 Ventilator
Installation

Installation manual 13
Installation
ENGLISH
Ceiling fixing bolt
(M10)
Nut
Washer
Spring washer
Nut
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.
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
Installation of main body
Duct to OA
Main body
Heat insulating material
Aluminium
Duct connection flange
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.
!

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.
!
14 Ventilator
Installation
Standards for model
L Z -H 0 5 0 G B A 4
Indicates that this is LG's
VENTILATION system
Heat Exchange Type
H: Total Heat Recovery
Capacity
Ex) 080 →800 CMH
100 →1 000 CMH
Electrical Standard (V, Hz, Ø)
220-240 V, 50 Hz, 1 ph /
220 V, 60 Hz, 1 ph
Model Type
B: Ceiling Concealed Type
Function
A: Basic
Development Sequence

Installation manual 15
Installation
ENGLISH
Cover of control box
Screw
Cord clamp
LZ-H025GBA4/LZ-H035GBA4/LZ-H050GBA4
LZ-H080GBA4/LZ-H100GBA4
LZ-H150GBA4/LZ-H200GBA4
1(L)
GND
2(N)
3(L) 4(N)
M.D.
GN/YL BR BL
Not
available
GND Power M.D. M.D.
1(L)
GND
2(N)
3(L) 4(N)
M.D.
GN/YLBR BL
Not
available
GNDPower
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.
Wiring specifications
Precautions when laying power wiring
Use round pressure terminals for connections to the
power terminal block.
Round pressure terminal Power wire
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 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)

16 Ventilator
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
CAUTION
When installing the wired remote controller, do not bury it in the wall.
(It can cause damage in the temperature sensor.)
The total cable length must not exceed 50 m. (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: AWG 24, 3 conductor or above
!
CAUTION
• Installation work must be performed in accordance with the national wiring standards by authorized
personnel only.
• Installations must comply with the applicable local/national or international standards.
• Apply totally enclosed noncombustible conduit (metal raceway) in case of local electric & building
code require plenum cable usage.
Please use extension cable if the distance between wired remote controller and indoor unit is more
than 10 m.
!
DC 12 V Red
Signal Yellow
GND Black

Installation
Installation manual 17
ENGLISH
GND
GND
12 V
Signal wire
Signal wire
GND
12 V
B Y R B Y R
Master Slave
Signal wire GND
12 V
Signal wire
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 installing more than 2 wired remote
controllers to one air conditioner, please
connect as the right picture.
• 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 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 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.
- 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)
hWhen 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 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.
12345678 12345678
#1 switch Off: Master
(Factory default setting)
#1 switch On: Slave

Installation
18 Ventilator
CAUTION
Installer setting is a mode to set the detailed functions of remote control.
If the installer setting mode is set improperly, it may cause a break down, injury, or property damage.
The installation requires an expertise and must be performed by one of our service centers or expert
installer providers.
The person who performed an installation takes responsibility for any troubles associated with the
installation, and in this case, service will be charged.
!
Installer setting -How to enter installer setting mode
Keep pressing(over 3 seconds) the B
button repeatedly to scroll to the
required function as described in the
Installer setting code table below.
Use the arrow buttons to select the
required value, and then press the K
button. You can leave the installer menu
by pressing L.
Alternatively, the installer mode will cease
automatically if no buttons have been
pressed for about 25 seconds.
1
Once entered the installer settings
mode, it displays the programmable data
values in the lower right of LCD screen.
2
Code value Set value
• Some items in the menu may not be displayed depending on the product functions, or
have different name in the menu.

Installation
Installation manual 19
ENGLISH
<Installer setting code table>
1) General ventilation product
hSome contents may not be displayed depending on the product function
No. Function Code Value
1 01 01 : Test run setup
2 02 00~FF : Address of central control
303
<ESP level> <ESP value> <Example>
01 : Low 0~255
02 : High
03 : Super high
404
5 05 01 : Normal
02 : Opposite
606
01 : Supply air first
02 : Exhaust air first
7 07 00 : Slave
01 : Master
809
00 : Auto-off
01 : Auto-on
9 10 01 : Set
10 11 01 : Variable
02 : Fixed
Function Code ESP valueESP step
Test run
Address setting
SA(Supply Air) ESP
EA(Exhaust Air) ESP
Product direction
Quick refresh priority
Master setting
Dry contact
Release of 3 minute delay
Zone state test run

Test running
20 Ventilator
Method to operate and select air volume – Interlinked operation with ventilation.
1
Press 2button in the Vent mode to run
the ventilator.
Press
P
button in the Vent mode to change
the ventilation operation mode.
- Each time you press the button the mode will
change in the order of Heat exchange →
normal →auto.
❈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.
Press Nbutton in the Vent mode to
change the fan speed.
- Each time you press the button the fan
speed is selected in the order of low
→
high
→ power.
- If a CO
2 sensor is installed, you can
select the fan speed in the order of low
→ high → power → auto.
How to convert to air conditioner mode
1) Auto conversion: If no button is selected for
more than 15 seconds in the vent mode, the
system will convert to air conditioner mode
automatically.
2) Manual conversion: Press the 1button in
the vent mode to convert manually.
2
3
4
Press 1button on the remote controller.
- It can be used only when the air conditioner
and the general ventilator are interlocked.
5
Interlinked Operation with
General Ventilation
It can be used only when the air conditioner and the ventilator are interlocked. This function is to cool
off the air in the room using a ventilator while air conditioner function is operating.
Test running