LG HM121M User manual

P/NO : MFL62567801 www.lg.com

INSTALLATION MANUAL

AIR CONDITIONER

• 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.

TYPE :

(Air-to-Water Heat Pump)

MODEL : CH Series

ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH ΕΛΛΗΝΙΚΆ

PORTUGUESE

2Air-to-Water Heat Pump

Air-to-Water Heat Pump Installation Manual

TABLE OF CONTENTS

1. SAFETY PRECAUTION...................................................................................................5

WARNING .....................................................................................................................................5

INSTALLATION .......................................................................................................................5

OPERATION............................................................................................................................6

CAUTION ......................................................................................................................................7

INSTALLATION .......................................................................................................................7

OPERATION............................................................................................................................7

2. INSTALLATION PARTS ...................................................................................................8

3. GENERAL INFORMATION ..............................................................................................9

MODEL INFORMATION................................................................................................................9

MODEL NAME AND RELATED INFORMATION.....................................................................9

ACCESSORIES ..........................................................................................................................10

ACCESSORIES SUPPORTED BY LG ELECTRONICS ......................................................10

ACCESSORIES SUPPORTED BY 3rd PARTY COMPANIES ..............................................10

TYPICAL INSTALLATION EXAMPLE .........................................................................................11

CASE 1 ..................................................................................................................................11

CASE 2..................................................................................................................................12

CYCLE DIAGRAM ......................................................................................................................13

REFRIGERANT CYCLE........................................................................................................13

WATER CYCLE ....................................................................................................................14

PARTS AND DIMENSIONS .......................................................................................................16

CONTROL PARTS .....................................................................................................................17

CONTROL BOX ....................................................................................................................17

REMOTE CONTROLLER .....................................................................................................18

WIRING DIAGRAM (INCL. FIELD WIRING) ........................................................................19

4. INSTALLATION OF UNIT ...........................................................................................................20

CONDITIONS WHERE UNIT IS INSTALLED ............................................................................20

GENERAL CONSIDERATIONS ...........................................................................................20

TRANSPORT ........................................................................................................................20

WATER VOLUME AND PUMP CAPACITY ..........................................................................21

WATER QUALITY .................................................................................................................22

FROST PROTECTION .........................................................................................................22

REMOTE CONTROLLER ....................................................................................................23

STRAINER ...........................................................................................................................25

SHUT-OFF VALVE ................................................................................................................25

INSTALLATION AT SEASIDE .....................................................................................................26

SEASONAL WIND AND CAUTIONS IN WINTER ......................................................................26

Installation Manual 3

ENGLISH

5. WIRING AND WATER PIPING FOR UNIT .................................................................................27

ELECTRICAL WIRING................................................................................................................27

WIRE SPECIFICATION.........................................................................................................27

GENERAL CONSIDERATION ..............................................................................................28

WIRING PROCEDURE FOR POWER CABLE AND CONNECTING CABLE.......................28

TERMINAL BLOCK INFORMATION .....................................................................................29

CIRCUIT BREAKER SPECIFICATION ................................................................................30

WATER PIPING AND WATER CIRCUIT CONNECTION............................................................31

GENERAL CONSIDERATIONS ...........................................................................................31

WATER PIPING AND WATER CIRCUIT CONNECTION .....................................................31

6. ACCESSORIES INSTALLATION ................................................................................................33

ELECTRIC HEATER ...................................................................................................................33

GENERAL INFORMATION ..................................................................................................33

MOUNTING ON THE WALL..................................................................................................33

HOW TO PIPE ELECTRIC HEATER ....................................................................................34

HOW TO WIRE ELECTRIC HEATER ..................................................................................35

THERMOSTAT ...........................................................................................................................36

INSTALLATION CONDITION ................................................................................................36

GENERAL INFORMATION ...................................................................................................37

HOW TO WIRE THERMOSTAT ............................................................................................38

FINAL CHECK ......................................................................................................................39

SANITARY WATER TANK AND SANITARY WATER TANK KIT/SOLAR THERMAL KIT............41

INSTALLATION CONDITION ................................................................................................41

HOW TO INSTALL SANITARY WATER TANK ......................................................................43

HOW TO INSTALL SANITARY WATER TANK KIT................................................................44

HOW TO WIRE SANITARY WATER TANK HEATER............................................................44

HOW TO INSTALL SOLAR THERMAL KIT...........................................................................44

3WAY VALVE ..............................................................................................................................45

GENERAL INFORMATION ...................................................................................................45

HOW TO WIRE 3WAY VALVE...............................................................................................45

FINAL CHECK.......................................................................................................................46

AIR-VENT ...................................................................................................................................46

WATER VOLUME AND EXPANSION VESSEL PRESSURE......................................................47

7. SYSTEM SET-UP ........................................................................................................................48

DIP SWITCH SETTING ..............................................................................................................48

GENERAL INFORMATION ...................................................................................................48

DIP SWITCH INFORMATION ...............................................................................................49

INSTALLER SETTING ................................................................................................................52

HOW TO ENTER INSTALLER SETTING MODE .................................................................52

SUMMARY ............................................................................................................................53

COMMON SETTING .............................................................................................................59

4Air-to-Water Heat Pump

TEMPERATURE RANGE SETTING .....................................................................................60

TEMPERATURE CONTROL PARAMETER SETTING AND ETC.........................................61

8. CHECK POINTS, MAINTENANCE AND TROUBLESHOOTING...............................................66

CHECK LIST BEFORE STARTING OPERATION.......................................................................66

MAINTENANCE ..........................................................................................................................67

LEAKAGE TEST AND EVACUATION .........................................................................................68

LEAKAGE TEST ...................................................................................................................68

EVACUATION........................................................................................................................69

FINISHING THE JOB ............................................................................................................69

TROUBLESHOOTING ................................................................................................................70

TROUBLESHOOTING FOR PROBLEM WHILE OPERATION ............................................70

TROUBLESHOOTING FOR ERROR CODE ........................................................................71

REMARK : ALL CONTENTS OF THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE.

TO GET THE LATEST INFORMATION, PLEASE VISIT LG ELECTRONICS WEB SITE.

www.lgservice.com

Installation Manual 5

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.

Be cautious when

unpacking and installing the

unit.

•

Sharp edges could cause injury.

Especially careful on the unit edges

and the fins on the heat exchanger.

Safety Precautions

1. 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.

■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 to properties only.

■Installation

Be sure not to do.

Be sure to follow the instruction.

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.

ENGLISH

For antifreeze, always contact the dealer or

an authorized service center.

•

Almost the antifreeze is a toxic product.

The refrigerant of this product is R407C.

•

The installation tool such as manifold gauge should be

complied with R407C.

6Air-to-Water Heat Pump

Safety Precautions

■Operation

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 let the unit run for a long

time when the humidity is very

high and a door or a window is

left open.

• Moisture may be condensed

and wet or damage furniture.

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.

Ventilate the unit from time to

time when operating it

together with a stove, etc.

• There is risk of fire or electric

shock.

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.

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.

• Oxygen deficiency could

occur.

When flammable gas leaks,

turn off the gas and open a

window for ventilation

before turn the unit on.

• There is risk of explosion or

fire.

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.

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.

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.

For installation, always

contact the dealer or an

Authorized Service Center.

•

There is risk of fire, electric shock,

explosion, or injury.

If the unit is not used for long

time, we strongly recommend

not to switch off the power

supply to the unit.

•

There is risk of water freezing.

Installation Manual 7

ENGLISH

■Installation

Always check for gas

(refrigerant) leakage after

installation or repair of unit.

• Low refrigerant levels may cause

failure of unit.

Do not install the unit where

it will be exposed to sea

wind (salt spray) directly.

•

It may cause corrosion on the

unit. Corrosion, particularly on

the condenser and evaporator

fins, could cause unit

malfunction or inefficient

operation.

Keep level even when

installing the unit.

• To avoid vibration or water

leakage.

Do not install the unit where the noise or hot

air from the unit could damage the

neighborhoods.

• It may cause a problem for your neighbors.

Use two or more people to lift and transport

the unit.

• Avoid personal injury.

Safety Precautions

■Operation

Do not lay on the cooled

floor for long time when the

unit is in cooling operation.

• This could harm to your health.

Do not use the unit for special

purposes, such as preserving

foods, works of art, etc. It is a

consumer unit, not a precision

refrigeration system.

• There is risk of damage or loss of

property.

Do not block the outlet of air

flow.

• It may cause unit failure.

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.

Do not insert hands or other

objects into the unit while it

is operating.

• There are sharp and moving

parts that could cause personal

injury.

Use a firm stool or ladder

when cleaning or

maintaining the unit.

• Be careful and avoid personal

injury.

8Air-to-Water Heat Pump

Installation Parts

2. Installation Parts

Thank you for choosing LG Electronics Air-to-Water Heat Pump .

Before starting installation, please make it sure that all parts are found inside the unit box.

Item Image Quantity

Installation Manual 1

Owner's Manual 1

Strainer 1

Shut-Off Valve 2

Remote Cotroller 1

Cable 1

OWNER’S MANUAL

AIR CONDITIONER

ENGLISHFRANÇAIS

Installation Manual 9

General Information

3. General Information

Model Information

With advanced inverter technology, is suitable for applications like under floor heating,

under floor cooling, and hot water generation. By Interfacing to various accessories user can

customize the range of the application.

In this chapter, general information of is presented to identify the installation

procedure. Before beginning installation, read this chapter carefully and find helpful information on

installation.

ENGLISH

Model name and related information

*1 : tested under Eurovent Heating condition (water temperature 30°C →35°C at outdoor ambient

temperature 7°C / 6°C)

*2 : tested under Eurovent Cooling condition (water temperature 23°C →18°C at outdoor ambient

temperature 35°C / 24°C)

CHBW146A1 14 14 1~ 220-240 V 50 Hz

CHBW126A1 12 12 1~ 220-240 V 50 Hz

CHBW096A1 10 10 1~ 220-240 V 50 Hz

Unit Capacity Power Source(unit)

Heating(kW*1) Cooling(kW*2)

10 Air-to-Water Heat Pump

General Information

Accessories

Accessories supported by LG Electronics

To extend the functionality of , there are various external auxiliary apparatus called as

"accessories."

They are classified by "accessories" and "3rd party accessories" according to the manufacturer.

Accessories are presented LG Electronics, and 3rd party accessories are presented by related

manufacturers.

Accessories supported by 3rd party Companies

Item Purpose Specification

Thermostat

3way valve and actuator

To control by air temperature

To control water flow for hot water

heating or floor heating

Heating-Only type (1~ 230 V or 1~ 24 V)

Cooling/Heating type (1~ 230 V or 1~ 24

V AC with Mode selection switch)

3 wire, SPDT (Single Pole Double

Throw) type, 1~ 230 V

Item Purpose Model

Sanitary Water Tank Install Kit

Remote Air Sensor

Dry Contact

Sanitary Water Tank

Electric Heater

(Air Vent)

AHEH0462A : 1~ 230 V 50 Hz 4 kW

AHEH0662A : 1~ 230 V 50 Hz 6 kW

To generate additional heat energy

To operate with sanitary water tank

To control by air temperature

To receive on & off external signal

To generate and store hot water

PHLTB

PQRSTA0

PQDSA (Installed)

PHS02060310 : 200 liter, Single Heating Coil,

1~ 230 V 50 Hz 3 kW Electric Heater

PHS02060320 : 200 liter, Double Heating Coil,

1~ 230 V 50 Hz 3 kW Electric Heater

PHS03060310 : 300 liter, Single Heating Coil,

1~ 230 V 50 Hz 3 kW Electric Heater

PHS03060320 : 300 liter, Double Heating Coil,

1~ 230 V 50 Hz 3 kW Electric Heater

Installation Manual 11

ENGLISH

General Information

If is installed with pre-existing boiler, the boiler and should not be operated together.

If entering water temperature of is above 65°C, the system will stop operation to

prevent mechanical damage of the unit. For detailed electric wiring and water piping, please

contact authorized installer.

Some installation scenes are presented for example. As these scenes are conceptual figures,

installer should optimize the installation scene according to the installation conditions.

CASE 1: Connecting Heat Emitters for Heating and Cooling

(Under floor loop, Fan Coil Unit, and Radiator)

R

A

E/T

T

Outdoor Indoor

Floor heating loopFan coil unit

Radiator

SE/H

High Temperature Room Thermostat(Field supply)

2way valve

(Field supply)

By-pass valve(Field supply)

Low Temperature

Expansion Tank Strainer(Mesh : 1mm*1mm)

Remote Controller

E/T

Electric Heater

E/H

S

R

Air Vent

A

Typical Installation Example

Note:

• Room thermostat

- Type of thermostat and specification should be complied with chapter 6 of

installation manual.

• 2way valve

- It is important to install 2way valve to prevent dew condensation on the floor and radiator while

cooling mode.

- Type of 2way valve and specification should be complied with chapter 6 of

installation manual.

- 2way valve should be installed at the supply side of the collector.

• By-pass valve

- To secure enough water flow rate, by-pass valve should be installed at the collector.

- By-pass valve should guarantee minimum water flow rate in any case. Minimum water flow rate is

described in water pump characteristics curve.

12 Air-to-Water Heat Pump

General Information

CASE 2:

Connecting Sanitary Water Tank

R

T

Outdoor Indoor

Floor heating loopFan coil unit

Sanitary

water

tank

Hot water

City water

Radiator

A

E/T

E/H

S

High Temperature Room Thermostat(Field supply)

2way valve

(Field supply)

3way valve

(Field supply)

By-pass valve(Field supply)

Low Temperature

Expansion Tank

Air Vent

Strainer(Mesh : 1mm*1mm)

Remote Controller

E/T

Electric Heater

E/H

A

S

R

Note:

• Electric Heater

- Type of electric heater and specification

should be complied with chapter 6 of installation manual.

• Sanitary water tank

- It should be equipped with internal electric heater to generate sufficient heat energy in very cold

season.

• 3way valve

- Type of 3way valve and specification should be complied with chapter 6 of

installation manual.

Installation Manual 13

General Information

Cycle Diagram

As is Air-to-Water Heat Pump, there are two different fluids cycling inside the system :

one is refrigerant, and the other is water. The refrigerant cycle and the water cycle are shown below.

Refrigerant Cycle

Description

UNIT

Plate Heat

Exchanger

EEV

Heat Exchanger

COMPRESSOR

Accumulator

RECEIVER

COOLING

HEATING

Reversing Valve

Solenoid valve

High Pressure

Low Pressure

Switch

Th3

Th2 Th6

Th7

Th5

Th4

- Optional accessory (being sold separately)

- Not shown in diagram

- Meaning is expressed based on Cooling

mode.

- Th4 and Th5 are connected at 4 pin type

connector CN_TH3.

- Description is expressed based on Cooling

mode.

- Th6 and Th7 are connected at 4 pin type

connector CN_TH2

CN_ROOM

CN_PIPE

CN_PIPE/O

CN_TH3

CN_TH2

CN_LEV1 -

Remote air temperature sensor

Inlet evaporator temperature sensor

Outlet evaporator temperature sensor

Compressor-suction pipe temperature

sensor

Compressor-discharge pipe temperature

Sensor

Condenser temperature sensor

Air temperature sensor

Electronic Expansion Valve

Th1

Th2

Th3

Th4

Th5

Th6

Th7

EEV

Symbol Meaning PCB

Connector Remarks

ENGLISH

14 Air-to-Water Heat Pump

General Information

Water cycle

Sanitary water

tank is installed.

(Sanitary water tank

kit is necessary)

< Basic Installation >

Fan

Coil

Unit

Underfloor

Heating

Radiator

< Accessory >

EXP/TANK

E/HT

S/O

Val ve Strainer

Installation Manual 15

ENGLISH

General Information

Description

- Meaning is expressed based on Cooling

mode.

- TH3 and TH4 are connected at 6 pin

type connector CN_TH3.

- Operating power(1~ 230V 50Hz) of internal

water pump is supplied by the connector.

- Optional accessory. (sold separately)

- Model : PQRSTA0.

- 3rd party accessory and Field installation.

(sold separately)

- Generating and storing sanitary hot water by

AWHP or built-in electric heater.

- 3rd party accessory and Field installation.

(usually built-in at W/TANK)

- Supplying additional water heating capacity.

- 3rd party accessory and Field installation.

(sold separately)

- SPDT type 3way valve is supported.

- Field installation.

CN_PIPE/OUT

CN_PIPE

CN_TH3

CN_FLOW1

CN_W/PUMP(A)

CN_ROOM

CN_REMO

(no connector)

CN_B/HEAT(A)

CN_3WAY(A)

(no connector)

CN_TH4

Refrigerant temperature sensor.

(Gas side)

Refrigerant temperature sensor.

(Liquid side)

Entering Water temperature sensor.

Leaving water temperature sensor.

Flow Switch.

Internal Water Pump.

Remote Air temperature sensor.

Remote Controller.

Sanitary Water Tank.

Electric Heater.

- Flow control for water which is leaving from

unit.

- Flow direction switching between under-

floor and water tank.

Water to be heated by unit and B/HT

of W/TANK.

Water supplied to end-user.

W/TANK water temperature sensor.

TH1

TH2

TH3

TH4

F/S

W_PUMP1

TH8

CTR/PNL

S/O Valve Shut-Off Valve. (no connector)

W/TANK

B/HT

3WAY V/V_1

CITY WATER

SHOWER

TH6

Category Symbol Meaning PCB Connector Remarks

Unit

Water

Heating

- TH6 is a part of sanitary water tank kit.

(Model:PHLTA)

To drain or to block water when pipe

connecting.

Filtering and stacking particles inside

circulating water.

Strainer Strainer. (no connector)

16 Air-to-Water Heat Pump

General Information

Parts and Dimensions

Model : CHBW146A1

CHBW126A1

CHBW096A1

5

6

8

10

9

7

4

2

1

3

4-holes for anchor bolts

Description

No Name Remarks

1 Entering Water Pipe Male PT 1 inch

2 Leaving Water Pipe Male PT 1 inch

3 Strainer Filtering and stacking particles inside circulating water

4 Top Cover -

5 Control Box PCB and terminal blocks

6 Plate Heat Exchanger Heat exchange between refrigerant and water

7 Water Pump -

8 Pressure Gage Indicates circulating water pressure

9 Safety Valve Open at water pressure 3 bar

10 Compressor -

Installation Manual 17

ENGLISH

General Information

Control Box

Model : CHBW146A1

CHBW126A1

CHBW096A1

2

1

3

4

5

Description

No Name Remarks

1 Inverter PCB Assembly Inverter PCB.

2 Main PCB Assembly 1 This PCB controls the functioning of the unit.

3 Main PCB Assembly 2 This PCB controls the cycle parts of the unit.

4 Terminal Block The terminal blocks allow easy connection of field wiring.

5 Cord Clamp -

Control Parts

18 Air-to-Water Heat Pump

General Information

Remote Controller

1

0

2

3

4

1

2

3

4

5

6

7

8

9

10

11

12

13

14

No Name

1 Display

2 Change Temperature Button

3 Silent Mode On / Off Button

4 Operation Mode Selection Button

5 Water Heating Enable / Disable Button

6 ESC Button

7 Direction Button (Up, Down, Left, Right)

8 Power Button

9 Function Setting Button

10 Temperature Setting Mode Button

11 Temperature View Mode Button

12 Programming Button

13 Set / Clear button

14 Pressure gage

※ Some functions may not be operated and displayed

depending on the model.

Installation Manual 19

ENGLISH

General Information

Wiring Diagram : Including Field Wiring

(Model : CHBW096A1, CHBW126A1, CHBW146A1)

20 Air-to-Water Heat Pump

Installation of Unit

4. Installation of Unit

is installed outside to exchange heat with ambient air. Therefore, it is important to

secure proper space around the unit and care for specific external conditions.

This chapter presents a guide to install the unit and what to do when installed around seaside.

General Considerations

• If a sunroof is built over the unit to prevent

direct sunlight or rain exposure, make sure that

heat radiation from the heat exchanger is not

restricted.

• Ensure that the spaces indicated by arrows

around front, back and side of the unit.

• Do not place animals and plants in the path of

the warm air.

• Take the weight of the unit into account and

select a place where noise and vibration are

minimum.

• Select a place so that the warm air and noise

from the unit do not disturb neighbors.

• The surface of the ground or the structure must

be strong enough to bear the weight of the unit.

Transport

The unit should be transported to the final

installation site on a wooden pallet. The unit

should be transported by means of a lift truck or

dray.

Conditions where Unit is Installed

More than

300mm

Fence or

obstacles

More than 700mm

More than 600mm

*Minimum

300mm

*Minimum

300mm

Sunroof

1. During transport, the unit must not be tilted more than 45°.

2. The unit must not be impacted.

3. The unit more than 30kg should be transported by two carriers or more.

(Carriers must wear safety protectors.)

4. When the unit is transported by lift truck or dray, be careful not to fall.

5. Be sure to dispose the scraps of vinyl bag, children can be in danger of suffocation.

* : Please secure the space to install the shut-off

valve and strainer.

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