ENGLISH

ITALIANO
ESPAÑOL
INSTALLATION MANUAL

FRANÇAIS
BACKUP
HEATER

DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
Please read this installation manual completely before installing the product.
NEDERLANDS

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.
Original instruction
POLSKI

(Backup Heater, Electric Heater Accessory)

HA031M E1, HA061M E1
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, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA
LIMBA ROMÂNĂ

P/NO : MFL68681815 www.lg.com

Rev.00_041218 Copyright © 2018 LG Electronics Inc. All Rights Reserved.
 2 SAFETY PRECAUTIONS
ENGLISH

SAFETY PRECAUTIONS
To prevent injury to the user or other people and property damage, the
following instructions must be followed.
• Be sure to read before installing the unit.
• Be sure to observe the cautions specified here as they include
important items related to safety.
• 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 to properties
only.

! 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.
- There is risk of fire or electric shock.
• Always ground the unit.
- 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
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not install, remove, or reinstall the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury
 SAFETY PRECAUTIONS 3

ENGLISH
• For antifreeze, always contact the dealer or an authorized service
center.
- Almost the antifreeze is a toxic product.
• 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 unit on a defective installation stand.
- It may cause injury, accident, or damage to the unit.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the unit could fall with it, causing property
damage, unit failure, and personal injury.
• Do not install the water pipe system as Open loop type.
- It may cause failure of unit.
• Make sure the connected condition of connector in product after
maintenance.
- Otherwise, it may causeproduct damage
Operation
• 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.
- There is risk of fire or electric shock.
• Do not plug or unplug the power supply plug during operation.
- There is risk of fire or electric shock.
• Do not touch (operate) the unit with wet hands.
- There is risk of fire or electric shock.
• Do not place a heater or other appliances near the power cable.
- There is risk of fire or electric shock.
• Do not allow water to run into electric parts.
- There is risk of fire, failure of the unit, or electric shock.
• Do not store or use flammable gas or combustibles near the unit.
- There is risk of fire or failure of unit.
• Do not use the unit in a tightly closed space for a long time.
- It may cause damage to the unit. When flammable gas
• If strange sounds, or small or smoke comes from unit, turn the
breaker off or disconnect the power supply cable.
- There is risk of electric shock or fire.
 4 SAFETY PRECAUTIONS
ENGLISH

• Stop operation and close the window in storm or hurricane. If

possible, remove the unit from the window before the hurricane
arrives.
- There is risk of property damage, failure of unit, or electric shock.
• Do not open the front cover of the unit while operation. (Do not
touch the electrostatic filter, if the unit is so equipped.)
- There is risk of physical injury, electric shock, or unit failure.
• Do not touch any electric part with wet hands. you should be power
off before touching electric part.
- There is risk of electric shock or fire.
• If you touch the pipe or internal parts, you should be wear protection
or wait time to return to normal temperature.
- Otherwise , it may cause burns or frostbite, personal injury.
• Do not touch electric parts for 10 minutes after main power off.
- There is risk of physical injury, electric shock.
• When the unit is soaked (flooded or submerged), contact an
Authorized Service Center.
- There is risk of fire or electric shock.
• Be cautious that water could not be poured to the unit directly.
- There is risk of fire, electric shock, or unit damage.
• Turn the main power off when cleaning or maintaining the unit.
- There is risk of electric shock.
• Take care to ensure that nobody could step on or fall onto the unit.
- This could result in personal injury and unit damage.
• For installation, always contact the dealer or an Authorized Service
Center.
- There is risk of fire, electric shock, explosion, or injury.
! CAUTION
Installation
• Keep level even when installing the unit.
- To avoid vibration or water leakage.
• Use two or more people to lift and transport the unit.
- Avoid personal injury.

Operation
• Do not use the unit for special purposes, such as preserving foods,
works of art, etc.
- There is risk of damage or loss of property.
 SAFETY PRECAUTIONS 5

ENGLISH
• Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
- There is risk of fire, electric shock, or damage to the plastic parts of
the unit.
• Do not step on or put anything on the unit.
- There is risk of personal injury and failure of unit.
• Use a firm stool or ladder when cleaning or maintaining the unit.
- Be careful and avoid personal injury.
• Do not turn on the breaker or power under condition that front panel
cabinet, top cover, control box cover are removed or opened.
- Otherwise it may cause fire, electric shock, explosion or death.
• 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.
• The appliance shall be disconnected from its power source during
service and when replacing parts.
• Means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.
• This equipment shall be provided with a supply conductor complying
with the national regulation.
• 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.
Children should be supervised to ensure that they do not play with
the appliance.

ENGLISH Disposal of your old appliance

1. When this crossed-out wheeled bin symbol is attached to a product it means the product is
covered by the European Directive 2002/96/EC.
2. All electrical and electronic products should be disposed of separately from the municipal waste
stream via designated collection facilitiesappointed by the government or the local authorities.
3. The correct disposal of your old appliance will help prevent potential negative consequences for
the environment and human health.
4. For more detailed information about disposal of your old appliance, please contact your city office,
waste disposal service or the shop where you purchased the product.
 6 MODEL INFORMATION
ENGLISH

MODEL INFORMATION
Model number nomenclature

H A 06 1 M E1

Electric Heater 1 Generation

Leaving Water Combination

None : Low Temperature Leaving Water
H : High Temperature Leaving Water
M : Middle Temperature Leaving Water

Electrical ratings
1 : 1 phase 220-240 V 50 Hz
3 : 3 phase 380-415 V 50 Hz
Nominal Heating Capacity Indication Conversion to kW
Ex) “03” : 03 kW
“06” : 06 kW
“12” : 12 kW
Accessory

H : Air to Water Heat Pump

 INSTALLATION METHOD 7

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INSTALLATION METHOD
Installation Part
Before starting installation, please make it sure that all parts are found inside the product box.

Backup Heater Box

Item Item Quantity

Backup Heater 1

Installation
1
Manual

Installation
1
Sheet

Terminal Block KIT 1

Screw 2

Maintenance
To assure best performance of Backup Heater, it is required to perform periodical check and
maintenance. It is recommended to proceed following check list for once a year.

! CAUTION
• Turn off the power before proceeding maintenance

No Category Item Check Point

• In normal state, the pressure gage (in front of
the indoor unit) should indicate 2.0~2.5 bar.
1 Water Water pressure
• If the pressure is less than 0.3 bar, please
recharge the water.
• Look and inspect if there is loosen or defected
2 Electricity Terminal block wiring
connection on the terminal block.
 8 INSTALLATION METHOD
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! CAUTION
• Electric Heater has to be installed vertically like the below figure.

! WARNING
Followings should be kept before installation
• Main power must be turned off during installing 3rd party accessories.
• 3rd party accessories should be comply with supported specification.
• Proper tools should be chosen for installation.
• Never do installation with wet hands.

General Information
Electric Heater is supported by LG Electronics.

Capacity (kW) Power Source

3 50 Hz 220-240 V~
6 50 Hz 220-240 V~
Electric Heater is installed on the outside of the unit. It is recommended to install it in the indoor.

5
6

2
3

Description
No Name Remark
1 Leaving Water Pipe Male PT 1 inch
2 Entering Water Pipe Male PT 1 inch
3 Control Box Terminal blocks, Magnetic switch, Circuit breaker
4 Thermal switch Cut-off power input to electric heater at 90 °C (manual return at 55°C )
5 Air vent Air purging when Charging water
6 Electric Heater
 INSTALLATION METHOD 9

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! CAUTION
• If water inlet temperature is above 65 °C, the unit does not operated for the sake of
system protection.
• If water inlet temperature is below 5 °C, the unit does not operated for the sake of system
protection. Wait while unit warms up the water inlet temperature.
• Safety valve opens at water pressure 3 bar. After water charging, the pressure gage (in
front of the indoor unit) should indicate 2.0~2.5 bar. Do not exceed 3.0 bar.

General Considerations
Followings are should be considered before the installation of the Backup Heater.
- The installation place should be free from outdoor weather conditions such as rain, snow, wind,
frost, etc.
- Choose the place where is water-resistant or good drainage.
- Service space should be secured.
- No flammable materials around the indoor unit.
- Mice can not be appeared to prevent entering the indoor unit or attacking wires.
- Do not place anything in front of the indoor unit to ensure air circulation around the indoor unit.
- Do not locate anything under the indoor unit to be free from unexpected water out.
- In case of water pressure increasing to 3 bar, water drainage should be treated when water is
drained by safety valve.

Service Space
• Ensure that the spaces indicated by arrows
250

around bottom, side, and top side.

• Wider spaces are preferred for easy
maintenance and piping.
• If minimum service space is not secured, air
circulation can be troubled and internal parts
of the indoor unit can be damaged by
overheating.
• Maximum length of pipe between the
backup heater and unit is 10 m.
200 200
1300

Minimum service space

(unit : mm)
 10 INSTALLATION METHOD
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Terminal Block Information

Symbols used below pictures are as follows :
- L, L1, L2 : Live (230 V AC)
- N : Neutral (230 V AC)
- BR : Brown , WH : White , BL : Blue , BK : Black

Terminal Terminal Terminal Terminal

Block 1 Block 2 Block 1 Block 2

< 3 kW > < 6 kW >

How to Connect Sensor to Unit

Find Backup heater Terminal Block KIT. Install the Terminal Block KIT after checking the hole for
screw. Plug it to ‘E/Heater Out’ (White Connector) of CN_TH3 in the Main PCB (Unit).
Connect cable between the unit and the Backup heater.
Use the cord clamper to fix the cable through low voltage hole.

Sensor Cable Terminal Block 1 (In Backup Heater)

(T/Block KIT)
7 8

A B
E/HEATER OUT
SENSOR
(5V DC)

Backup
heater
Low 31 32
voltage
A B
E/HEATER OUT
SENSOR
(5V DC)

Connection Cable Terminal Block KIT (In UNIT)

E/Heater Out
(Unit)
Sensor Cable
(T/Block KIT)
 INSTALLATION METHOD 11

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How to Wire Electric Heater
Follow below procedures Step 1 ~ Step 4.
Step 1. Uncover the electric heater accessory.
Step 2. Find the terminal block and connect wires.
(Wires are field-supplied item.)

Step 3. Connect terminal block ports unit and electric heater accessory.

(3 kW)
Terminal Block 2 (In Backup Heater)
1(L) 2(N) 3 4 5 6

L N A(A1) A(A2)
Power Supply ELECTRIC HEATER A
50 Hz 220-240 V~ (SIGNAL)

23 24 25 26

Terminal Block 3 (In Unit)

(6 kW)
Terminal Block 2 (In Backup Heater)
1(L) 2(N) 3 4 5 6

L N A(A1) A(A2) B(A1) B(A2)

Power Supply ELECTRIC HEATER A ELECTRIC HEATER B
50 Hz 220-240 V~ (SIGNAL) (SIGNAL)

23 24 25 26

Terminal Block 3 (In Unit)

Step 4. Connect power supply cable to terminal block 2.

Terminal Block 2 (In Backup Heater)

1(L) 2(N)

Power Supply
50 Hz 220-240 V~
 12 INSTALLATION METHOD
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Typical Installation Example

Floor + Backup heater (Only Heating)

[Outdoor] Backup [Room]

heater

Collector

Unit Collector
Buffer
Filter Tank
Safety V/V
s 2 Way V/V
(Signal)
T Thermostatic V/V

2 Way V/V
(Manual)
Remote
Air vent
Control
Floor Heating

Radiator

Convector

Floor+Convector+Backup heater (Heating + Cooling)

[Outdoor] Backup [Room]

heater

Collector

Cooling: Close
s

Heating: Open
Heating ▲(B)
s
▲

(A) Cooling
3 Way V/V
Unit direction Buffer
Filter Tank

Collector

3 way valve
(Signal)
s 2 Way V/V
(Signal)
Remote
T
Control Thermostatic V/V

2Way V/V
(Manual)
NOTICE Air vent

1. When the backup heater is installed in a reversible Floor Heating

system, condensation may occur inside the backup
3 Way V/V direction
heater. Flow A (Bypass) : Cooling Radiator
2. To provide a bypass for the condensate, install 3way Flow B (Heater) : Heating
valve. Convector
 INSTALLATION METHOD 13

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3WAY VALVE (For Backup heater Bypass)
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit.
Step 2. Find terminal block and connect wire as below. (in the unit)

18 19 20 ! WARNING
L1 L2 N • When type of 2way valve is NO type, 3way valve should
select Flow A (bypass) when electric power is supplied to
2WAY VALVE
wire (NO) and wire (N).
(A) • When type of 2way valve is NC type, 3way valve should
(NO) (NC) (N) select Flow A (bypass) when electric power is supplied to
wire (NC) and wire (N).

3WAY VALVE ! CAUTION

• 3Way valve should be connected together with 2Way valve
in terminal block.
• Keep the distance between 3Way valve and backup heater
more than 0.5m.
• To prevent reverse flow, It is important to use one way
valve(check valve) to Backup heater water outlet.

(1) : Flow A means ‘water flow from the unit to Buffer tank . (Cooling)
(2) : Flow B means ‘water flow from the unit to Backup heater. (Heating)
 14 INSTALLATION METHOD
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Final check
• Flow direction
- Water should not flow into Heater loop (B) in cooling mode.
- To verify the flow direction, check temperature at the water inlet of the under floor loop.
- If correctly wired, this temperatures should not be approached to 6°C in cooling mode.
• Noise or water pipe vibration while 3way valve operation
- Due to surging effect or cavitation effect, noise or water pipe vibration can be occurred while
3way valve is operating.
- In that case, check followings :
• Is water circuit (both under floor water loop and sanitary water tank loop) fully charged? If not,
additional water charging is required.
• Fast valve operation yields noise and vibration. Appropriated valve operating time is 60~90
seconds.

Mounting on the Wall

Step 1. Uncover the electric heater accessory.
Step 2. Attach "Installation Sheet" to the wall and mark the
location of bolts. This sheet helps to find correct
location to the bolts.(Installation Sheet is included in
Backup Heater Front Panel.)

! CAUTION
• The sheet should be attached level. If not, the supporting plate and the indoor unit will not
be mounted correctly.

Step 3. Screw bolts at the hole marks.

When screwing bolts, use M8 anchor bolts to secure hanging the unit.
Step 4. Fasten the electric heater accessory on the wall.

! CAUTION
• Electric Heater must be located highest level of water pipe system.
(Because air-Vent is added in electric heater accessory.)

How to Pipe Electric Heater

Follow below procedures Step 1 ~ Step 4.
Step 1. Uncover the electric heater accessory.
Step 2. Check the diameter of pre-installed pipes of unit.
Step 3. If the diameter of pre-installed pipes is different from diameter of electric heater
accessory kit, it is necessary to reduce or extend pipe's diameter.
Step 4. Connect the pipes. The inlet pipe of electric heater accessory must be connected to
outlet of the unit.
 INSTALLATION METHOD 15

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! WARNING
Followings should be kept before installation
• The unit should be stop before the piping work.
• Never connect electric power while piping electric heater.
• Before the piping working, water in the part(or to heating loop) installated with electric
heater should be drained. After working, water should be charged.

! CAUTION
• Electric Heater should be installed with enough space for installation and service.
• Water pipes and connections should be cleaned using water.
• Methods to prevent leackage in plumbing connections must be applied.
• Heater must not be impacted.
• Do not let dirty particle be dropped inside tank to avoid possibility of degrade.
• After installation, make it sure that no leakage is appeared in the connection.

! CAUTION
• Power Cable Specification : The power cord connected to the outdoor unit should be
complied with IEC 60245 or HD 22.4 S4(Rubber insulated cord, type 60245 IEC 66 or
H07RN-F)
10±3 mm Capacity(kW) Purpose Phase(Ø) Area(mm2) x Cores
m m SIGNAL (Electric Heater) 0.75 x 4C
1 Phase(Ø) ±5
35 3 Sensor 0.75 x 2C
Power Supply 1.5 x 3C
GN 1
/Y
L SIGNAL (Electric Heater) 0.75 x 4C
20
6 Sensor 0.75 x 2C
mm
Power Supply 4 x 3C
• 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 hazrd.

• In order to avoid a hazard due to inadvertent resetting of the

thermal cut-out, this appliance must not be supplied through
an external switching device, such as a timer, or connected
to a circuit that is regularly switched on and off by the utility.

! WARNING
Followings should be kept before wiring
• Supply type of electric heater should be ensured.
• Never connect electric power while wiring electric heater.
• The wire that is connected to electric heater should be used to meet specification of each
country.
• Main power of electric heater should be applied with MCCB.
 16 INSTALLATION METHOD
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Circuit Breaker Specification

Perform the electrical wiring work according to the electrical wiring connection.
• All wiring must comply with local requirements.
• Select a power source that is capable of supplying the current required by the appliance.

Capacity (kW) Phase(Ø) ELCB

3 40 A
1
6 40 A

DIP Switch Setting (in unit)

Turn off electric power supply before setting DIP switch
• Whenever adjusting DIP switch, turn off electric power supply to avoid electric shock.

ON

1 2 3 4 5 6 7 8

OFF

OFF is selected

ON is selected

Description Setting Default

6 kW
6 7

Selecting electric 3 kW
heater capacity 6 7
6 7

Electric heater is not used

6 7