LG THERMA V AHNW16606B0 Bedienungsanleitung

SERVICE MANUAL

P/NO : MFL69717001

AIR-TO-WATER

HEAT PUMP

www.lg.com

Before servicing the unit, read the safety precautions in general SVC manual.

Only for authorized service personnel.

GENERAL

CONFIDENTIAL

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1. General...........................................................................................................................................3

2. Specification ...................................................................................................................................8

3. Function Table ..............................................................................................................................13

4. Pump Hydraulic Performance.......................................................................................................14

5. Piping Diagrams ...........................................................................................................................15

6. Wiring Diagrams...........................................................................................................................16

7. Exploded View..............................................................................................................................21

8. Model Information.........................................................................................................................29

9. Replacement Procedure for Compressor.....................................................................................31

10. Caution for Assembling Outdoor Panels after Test Run.............................................................32

11. Trouble shooting Guide (Indoor Unit) .........................................................................................33

12. Trouble shooting Guide (Outdoor Unit) ......................................................................................40

Content

- 3 -

The manual describes the process of setting up and use of the device. Servicing and maintenance

of the device can only be performed by qualified personnel. Read the manual carefully before

working on the device, this way you will be informed about the intended use, functionality and

process of troubleshooting the device.

Definitions

• An informed person is a person who reads this manual.

• A qualified person has a certificate of expert qualifications.

• An authorised commission contractor is trained by the manufacturer and authorised to perform

commission.

• The authorised technician is trained and authorised by the manufacturer to perform maintenance

and servicing of the device.

• The user uses the device according to its use.

• The installer is a person professionally trained for performing hardware and/or electro-installation

work and mounting of the device.

Incorrect use of the device can lead to damage of the device, property or injury to the user or main-

tenance worker. To reduce risk the manual points out important information with the use of sym-

bols.

1.1 Symbol

1. General

To prevent injury to the user or other people and property damage, the following instructions must

be followed.

nIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

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

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

- 4 -

1.3 Safety warnings and instructions

WARNING

Installation

• Ask the dealer or an authorized technician to install the air conditioner.

- Improper installation by the user may result in water leakage, electric shock, or fire.

• Take care to ensure that nobody could step on or fall onto the outdoor unit.

- This could result in personal injury and product damage.

• Always ground the product.

- There is risk of fire or electric shock.

• Always intstall a dedicated circuit and breaker.

- Improper wiring or installation may cause fire or electric shock.

• For re-installation of the installed product, always contact a dealer or an Authorized

Service Center.

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

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

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

• Do not store or use flammable gas or combustibles near the air conditioner.

- There is risk of fire or failure of product.

• Use the correctly rated breaker or fuse.

- There is risk of fire or electric shock.

• Before beginning the service procedure, it is necessary to read the service manual.

• The installation of the device has to be performed in accordance with the manual; otherwise the

manufacturer does not acknowledge the warranty.

• Any remaking or replacement of original components of the device eliminates the manufacturer’s

guarantee for safe and functional operation. In the case of undesignated and incorrect use of the

device, the manufacturer is not responsible for the consequences and will not acknowledge claims for

damages in these cases. The user is solely responsible for injuries and damages on the device itself or

on other objects resulting from undesignated and incorrect use of the device.

• Failure to comply with the manual and good practise while connecting the device to the power supply

can lead to serious injury or death.

• Connecting the device to the power source can only be performed by a qualified installer.

NOTE

WARNING

1.2 General

- 5 -

• Prepare for strong wind or earthquake and install the unit at the specified place.

- Improper installation may cause the unit to topple and result in injury.

• Do not install the product on a defective installation stand.

- It may cause injury, accident, or damage to the product.

• When installing and moving the air conditioner to another site, do not charge it with a

different refrigerant from the refrigerant specified on the unit.

- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle

may malfunction and the unit may be damaged.

• Do not reconstruct to change the settings of the protection devices.

- If the pressure switch, thermal switch, or other protection device is shorted and operated

forcibly, or parts other than those specified by LGE are used, fire or explosion may result.

• Ventilate before operating air conditioner when gas leaked out.

- It may cause explosion, fire, and burn.

• Securely install the cover of control box and the panel.

- If the cover and panel are not installed securely, dust or water may enter the outdoor unit

and fire or electric shock may result.

Operation

• Do not damage or use an unspecified power cord.

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

• Use a dedicated outlet for this appliance.

- There is risk of fire or electrical shock.

• Be cautious that water could not enter the product.

- There is risk of fire, electric shock, or product damage.

• Do not touch the power switch with wet hands.

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

• When the product is soaked (flooded or submerged), contact an Authorized Service

Center.

- There is risk of fire or electric shock.

• Be cautious not to touch the sharp edges when installing.

- It may cause injury.

- 6 -

Installation

• Always check for gas (refrigerant) leakage after installation or repair of product.

- Low refrigerant levels may cause failure of product.

• Do not install the product where the noise or hot air from the outdoor unit could damage

the neighborhoods.

- It may cause a problem for your neighbors.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Do not install the unit where combustible gas may leak.

- If the gas leaks and accumulates around the unit, an explosion may result.

• Use power cables of sufficient current carrying capacity and rating.

- Cables that are too small may leak, generate heat, and cause a fire.

• Do not use the product for special purposes, such as preserving foods, works of art, etc. It

is a consumer air conditioner, not a precision refrigeration system.

- There is risk of damage or loss of property.

• Keep the unit away from children. The heat exchanger is very sharp.

- It can cause the injury, such as cutting the finger. Also the damaged fin may result in

degradation of capacity.

• When installting the unit in a hospital, communication station, or similar place, provide

sufficient protection against noise.

- The inverter equipment, private power generator, high-frequency medical equipment, or

radio communication equipment may cause the air conditioner to operate erroneously, or

fail to operate. On the other hand, the air conditioner may affect such equipment by

creating noise that disturbs medical treatment or image broadcasting.

• Do not install the product where it is 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

• Do not use the air conditioner in special environments.

- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air

conditioner or damage its parts.

• Do not block the inlet or outlet.

- It may cause failure of appliance or accident.

• Make the connections securely so that the outside force of the cable may not be applied to

the terminals.

- Inadequate connection and fastening may generate heat and cause a fire.

CAUTION

- 7 -

• Be sure the installation area does not deteriorate with age.

- If the base collapses, the air conditioner could fall with it, causing property damage,

product failure, or personal injury.

• Install and insulate the drain hose to ensure that water is drained away properly based on

the installation manual.

- A bad connection may cause water leakage.

• Be very careful about product transportation.

- Only one person should not carry the product if it weighs more than 20 kg.

- Some products use PP bands for packaging. Do not use any PP bands for a means of

transportation. It is dangerous.

- Do not touch the heat exchanger fins. Doing so may cut your fingers.

- When transporting the outdoor unit, suspending it at the specified positions on the unit

base. Also support the outdoor unit at four points so that it cannot slip sideways.

• Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause stabs or

other injuries.

- Tear apart and throw away plastic packaging bags so that children may not play with

them. If children play with a plastic bag which was not torn apart, they face the risk of

suffocation.

• Turn on the power at least 6 hours before starting operation.

- Starting operation immediately after turning on the main power switch can result in

severe damage to internal parts. Keep the power switch turned on during the operational

season.

- 8 -

2. Specification

Indoor

Indoor unit AHNW16606B0 /HN1616T NB0

Version

Controller TT3000 (MD1)

Device placement Indoor

Electrical data

1f connection of the internal unit 2)

Frequency Hz 50

Rated voltage V ~ 230

Max. operational current A 11.1

Max. electrical power kW 2.52

Fuses 6) A 1 x C16

Electrical power cable 1) mm23 x 4

Electric heater 1 x 2 kW ~ 230 V

3f connection of the internal unit 2)

Frequency Hz 50

Rated voltage V 3N ~ 400

Max. operational current A 11.1

Max. electrical power kW 6.52

Fuses 6) A 3 x C16

Electrical power cable 1) mm25 x 2.5

Electric heater 3 x 2 kW ~ 230 V

Max. external electric power 2) W500

Cooling system

Max. operational pressure MPa 5,0

Refrigerant Pipe c onnections

Pipe connection of the liquid pipe

3/8''

Pipe connection of the gas pipe 5/8''

Primary side (heat source) - air

Heating and cooling

Range of operation -

min. / max. air temperature °C Depending on the external air - water unit

Secondary side (heat sink) - water

Min. / Max. pressure in the system MPa 0,05 / 0,3 (0,5 / 3 bar)

Recommended dimensions of

pipes of the device 4) DN 25

Heating

Rated flow 3) m3 / h Min 1 m3/h

Pressure drop at rated flow kPa 10

Range of operation -

min. / max. water temperature °C 25 / 58

Cooling

Range of operation -

min. / max. water temperature °C 7 / 25

Pipe connections for the water connection

Return line system R1’’ (ext. u.)

Supply line system

R1’’ (ext. u.)

DHW – hot water connection R1’’ (ext. u.)

DHW – cold water connection R3/4’’ (ext. u.)

Volume

DHW Tank l 200

Buffer tank l 40

Dimensions and mass

Dimensions (W x H x D) mm 607 x 2045 x 725

Transport mass kg 238

Net mass kg 228

Noise

Level of sound power dB (A) 36

Level of sound pressure at a

distance of 1 m dB (A) 27

Communication

Connect ion between outdoor and

indoor unit 3 x 0.75 mm 2

Connection to CNS MODBUS protocol (UTP cable – connection RJ45) – RS 485

Connection to the internet 5) UTP cable - connection RJ45 - Ethernet

Miscellaneous

Protection class – indoor unit IPX1

19.9

4.52

1 x C20

3 x 4

2 x 2 kW ~ 230 V

- 9 -

Note :

1) With the cable we have taken into account laying B2 from the table A.52.4 – IEC 60364-5-52. The cable in the installation pipe is fixed to the wall.

The dimensions of the electrical cables must always be checked or determined by the designing engineer of electrical installations.

2) Joint maximal load (circulation pumps, electronic valves ...) which can be connected to or powered by the internal unit, must not exceed the specified

value. Higher consumers (i.e. pumps) should have their own supply.

3) The circulation pump must be dimensioned in such a way that it ensures rated flow through the device.

4) This is true for pipe connections of suitable dimensions and joint distance of up to 20m. Pipe dimensions and types of pumps must always be verified or

determined by the designing engineer of electrical installations. Circulation pumps must be dimensioned in such a way so as to ensure rated voltage (see

table) through the device.

5) Connection to the internet is not necessary for the operation of the device but it is necessary for remote control through the Home Cloud service.

It is also advisable for faster troubleshooting of the device’s operation.

6) The size of the fuse depends on the choice of the connection power of the electrical heater.

- 10 -

Outdoor

Outdoor Units

AHUW146A2

AHUW096A3

Combination Indoor Units

AHNW16606B0

Power Supply

Ø / V / Hz

1/220-240/50

1 / 220-240 / 50

Maximum Running

Cooling

Current

Heating

Wiring Connections

For Power Supply

(Included Earth)

Number of wires

* Capacity

Cooling(Under floor)

11.0

Heating(Under floor)

14.0

* Power Input

Cooling(Under floor)

3.04

Heating(Under floor)

3.16

*EER

Cooling(Under floor)

W/W

3.61

*COP

Heating(Under floor)

W/W

4.44

Operation Range (Min.~Max.)

Outdoor Temperature

Cooling

°C DB

5 ~ 48

Heating

°C DB

-20 ~ 30

Compressor

Type

Hermetic Motor

Model

GPT442MBA

Quantity

Displacement

cm3/Rev.

44.2

Capacity

13.92

Compressor Motor

Type

Brushless

Quantity

Rated Output

4,000

Refrigerant

Type

R410A

Charge

2,300

Control

Electronic Expansion Valve

Refrigerant Oil

Type

FVC68D

Charged Volume

1,300

Heat Exchanger

Quantity

Rows

Columns

FPI

Fins/inch

Fan

Type

Propeller

Quantity

Air Flow Rate

CMM(l/s)

Fan Motor

Model

BLDC

Quantity

Output

124

Sound Power Level

Heating

Liquid Piping Connection

Type

Flare

Outer Diameter

mm(inch)

Ø 9.52 (3/8)

Gas Piping Connection

Type

Flare

Outer Diameter

mm(inch)

Ø 15.88 (5/8)

Piping Length (Outdoor Unit ~

Indoor Unit)

Minimum

Standard

7.5

Maximum

Height Difference (Outdoor

Unit ~ Indoor Unit)

Maximum

30 30

Additional Refrigerant Charge

g/m

Dimensions

Unit(W x H x D)

950 x 1,380 x 330

Packed Unit(W x H x D)

1,140 x 1,462 x 461

Weight

Unit

Packed Unit

107

**Rated water flow rate

LPM

9.0

2.88

2.23

3.12

4.04

5 ~ 48

-20 ~ 30

Hermetic Motor

GJT240MAA

7.41

Brushless

2,137

R410A

1,800

EEV

FVC68D

900

Propeller

BLDC

124

Flare

Ø 9.52 (3/8)

Flare

Ø 15.88 (5/8)

7.5

950 × 834 × 330

1,065 × 918 × 461

Note :

1. Capacities and power inputs are based on the following conditions:

* : Cooling conditions - Indoor Water Temperature 23°C/18°C; Outdoor Air Temperature 35°CDB/24°CWB

Heating conditions - Indoor Water Temperature 30°C/35°C; Outdoor Air Temperature 7°CDB/6°CWB

Standard piping length 7.5m

2. Wiring cable size must comply with the applicable local and national code.

3. The specification may be subject to change without prior notice for purpose of improvement.

4. ** Indoor unit Rated water flow rate.

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