LG ARNH04GK3A4 INSTALLATION 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.

[

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

INSTALLATION MANUAL

AIR-TO-WATER HEAT PUMP

Hydro Kit

Original instruction (R410A/R32)

www.lg.com

MFL67086712

Rev.07_092220

РУССКИЙ ЯЗЫК

ENGLISH

ITALIANO ESPAÑOL FRANÇAIS

DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

Table of contents

TABLE OF CONTENTS

3 SAFETY INSTRUCTIONS 9 INSTALLATION PARTS 10 GENERAL INFORMATION

10 Model Information 12 General Information

13 INSTALLATION

13 Transporting the Unit 14 Selection of the best location 14 Installation Space 17 Foundation for Installation 18 Water Piping and Water Circuit Connection 21 Installation Scenes 28 Refrigerant Piping 31 How to connect wirings 32 Wiring Connection 34 Connecting Cables 37 Independent Power Module

39 ACCESSORIES INSTALLATION

39 Location of Accessories and External Parts Connection 41 Main Pump Connection 41 Water tank temperature sensor Connection 42 Thermostat 46 Remote Temperature Sensor 47 3Way Valve 49 2Way Valve 50 Dry Contact 52 External Controller 53 External pump 54 Wi-fi Modem 55 Smart Grid

56 SYSTEM SET-UP

56 DIP Switch Setting 59 Group Control Setting 63 Installer Setting

76 TEST RUN

76 Caution before Operation Test 76 Operation Test of Water Pipe 77 Troubleshooting 79 Airborne Noise Emission 79 Model Designation

Hydro Kit

Safety instructions

ENGLISH

Safety instructions

The following symbols are displayed on indoor and outdoor units.

Read the precautions in this manual carefully before operating the unit.

This symbol indicates that the Operation Manual should be read carefully.

The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below.

This symbol is displayed to indicate matters and operations

that can cause risk. Read the part with this symbol carefully and follow the instructions in order to avoid risk.

WARNING

This indicates that the failure to follow the instructions can cause serious injury or death.

This appliance is filled with flammable refrigerant. (for R32)

This symbol indicates that a service personnel should be handling this equipment with reference to the Installation Manual.

CAUTION

This indicates that the failure to follow the instructions can cause the minor injury or damage to the product.

WARNING

Installation

• Compliance with national gas regulations shall be observed.

• 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.

Hydro Kit

Installation Manual 3

Safety instructions

• 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.

• Be cautious when unpacking and installing the product.

- Sharp edges could cause injury. Be especially careful of the case

edges and the fins on the condenser and evaporator.

• 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.

• 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.

• 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.

• 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 unit outdoor.

- It may cause damage to the unit.

• Use a vacuum pump or inert (nitrogen) gas when doing leakage test or purging air. Do not compress air or oxygen and do not use flammable gases.

- There is the risk of death, injury, fire or explosion.

• The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation. (for R32)

• Ducts connected to an appliance shall not contain an ignition source. (for R32)

Hydro Kit

Safety instructions

• The appliance shall be stored in a room without continuously operating

ENGLISH

ignition sources (for example: open flames, an operating gas appliance or an operating electric heater.)

• 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.

• Have all electric work done by a licensed electrician according to "Electric Facility Engineering Standard" and "Interior Wire Regulations" and the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is

performed improperly, electric shock or fire may result.

• Always install a dedicated circuit and breaker.

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

• Keep any required ventilation openings clear of obstruction.

• Mechanical connections shall be accessible for maintenance purposes.

• To prevent the mixing of different types of refrigerants, be sure to check the type of refrigerant used in the outdoor unit.

• When mechanical connectors are reused indoors, sealing parts shall be renewed. (for R32)

• When flared joints are reused indoors, the flare part shall be refabricated. (for R32)

Operation

• Do not let the air conditioner 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.

• 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.

Hydro Kit

Installation Manual 5

Safety instructions

• 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 product 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 turning the unit on.

- There is risk of explosion or fire.

• If strange sounds, or smell 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 enter the product.

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

• 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.

• 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.

• Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water.

Hydro Kit

Safety instructions

• Do not use means to accelerate the defrosting process or to clean,

ENGLISH

other than those recommended by the manufacturer.

• Do not pierce or burn refrigerant cycle part.

• Be aware that refrigerants may not contain an odour.

CAUTION

Installation

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

- Low refrigerant levels may cause failure of unit.

• 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.

• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification. (for R32)

• The appliance shall be stored so as to prevent mechanical damage from occurring.

• If anyone other than a licensed Professional installs, repairs, or alters LG Electronics Air Conditioning Products, the warranty is voided.

- All costs associated with repair are then the full responsibility of the

owner.

• 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.

• Refrigerant tubing shall be protected or enclosed to avoid damage.

• Flexible refrigerant connectors (such as connecting lines between the indoor and outdoor unit) that may be displaced during normal operations shall be protected against mechanical damage.

• The installation of pipe-work shall be kept to a minimum.

• Pipe-work shall be protected from physical damage.

Hydro Kit

Installation Manual 7

Safety instructions

• A brazed, welded, or mechanical connection shall be made before opening the valves to permit refrigerant to flow between the refrigerating system parts.

• Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards.

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.

- There is risk of damage or loss of property.

• 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.

• Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants. (for R32)

• Do not unplug the power supply plug of Hydro Kit when stopping Hydro Kit operation. Always turn Hydro Kit off, using the wired remote controller.

- A plate heat exchanger burst may happen because of disconnection

of communication between Hydro Kit and the outdoor unit.

Hydro Kit

Installation Parts

ENGLISH

Thank you for choosing LG Electronics

Hydro Kit

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

Item Image Quantity

Remote Controller

/ Cable

Sensor Holder 1

Water Tank Temperature

Sensor

Strainer 1

Independent

Power Module

(For Medium Temperature)

Owner’s & Installation manual 1

CN_EXT Cable 1

Hydro Kit

Installation Manual 9

General Information

With advanced inverter technology, and hot water generation. By Interfacing to various accessories user can customize the range of the application.

Hydro Kit

is suitable for applications like under floor heating,

Model Information

Model name and related information

• For Medium Temperature

Type

Power Supply Ø, V, Hz

Cooling

Capacity

Heating

*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)

- Max Allowable pressure

High side : 4.2 MPa / Low Side : 2.4 MPa

- Max Allowable water temperature

High side : 50 °C / Low side : 10 °C

- Max Allowable water pressure 0.98 MPa (0.3~10 kgf/cm

kcal/h

Btu/h

kcal/h

Btu/h

10 4

28 12.3

24 100 10 580

95 900 42 000

31.5 13.8

27 100 11 870

107 500 47 000

Hydro Kit

1, 220-240, 50

)

Hydro Kit

• For High Temperature

General Information

ENGLISH

Type

Power Supply Ø, V, Hz

Capacity Heating

Refrigerant

Quantity kg(lbs)

Type

kcal/h

Btu/h

25.2 13.8

21 700 11 870

85 900 47 000

3(6.6) 2.3(5.04)

Hydro Kit

1, 220-240, 50

R134a

*1 : Tested under Eurovent Heating condition

(Water temperature 55 ℃ → 65 ℃ at outdoor ambient temperature 7 ℃ / 6 ℃)

- Max Allowable pressure

High side : 4.2 MPa / Low Side : 2.4 MPa

- Max Allowable water temperature

High side : 80 °C / Low side : 10 °C

- Max Allowable water pressure 0.98 MPa (0.3~10 kgf/cm

)

Hydro Kit

Installation Manual 11

General Information

To extend the functionality of "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.

Hydro Kit

, there are various external auxiliary apparatus called as

Accessories supported by LG Electronics

Item Purpose

Remote Air

Sensor

Dry Contact

Solar Thermal Kit

To control the unit by air

To receive on & off external

To operate with sanitary

temperature

signal

water tank

Model

(Medium Temperature)

PQRSTA0 PQRSTA0

PDRYCB000 / PDRYCB100 /

PDRYCB300

PHLLA

Model

(High Temperature)

PDRYCB000 / PDRYCB100 /

PDRYCB300

Accessories supported by 3rdparty Companies

Item Purpose Specification

Solar

Thermal System

Thermostat

3way valve

and actuator

To generate auxiliary

heating energy for water tank

To control the unit by air

temperature

To control water flow for hot

water heating or floor heating

Heating-Only type

(230 V AC or 24 V AC)

Cooling/Heating type

(230 V AC or 24 V AC

with Mode selection switch)

3 wire, SPDT (Single Pole Double

Throw) type, 230 V AC

2way valve

and actuator

Hydro Kit

To control water flow for

Fan Coil Unit

2 wire, NO(Normal Open) or NC (Normal Closed) type, 230 V AC

Installation

Transporting the Unit

• For High Temperature

• When carrying the suspended unit, pass the ropes between legs of base panel under the unit.

• Always lift the unit with ropes attached at 6 points so that impact is not applied to the unit.

• Attach the ropes to the unit at an angle Ⓐ of 40° or less.

• Use only accessories and parts which are of the designated specification when installing.

Sub line

ENGLISH

40º or less Line supporter

CAUTION

Be very careful while carrying the unit.

- Do not have only one person carry the unit if it is more than 20 kg (44.1 lbs).

- PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.

- Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise plastic packaging bag may suffocate children to death.

- When carrying the unit, be sure to support it at 6-points. Carrying and lifting the unit with 4point support may make it unstable, resulting in a fall.

Hydro Kit

Installation Manual 13

Installation

Selection of the best location

Select space for installing the unit, which will meet the following conditions: The place where the unit shall be installed inside. The place shall easily bear a load exceeding four times of the unit weight. The place where the unit shall be leveled. The place shall allow easy water drainage. The place where the unit shall be connected to the outdoor unit. The place where the unit is not affected by an electrical noise. The place where there should not be any heat source or steam near the unit.

Installation Space

• The following values are the least space for installation.

If any service area is needed for service according to field circumstance, obtain enough service space.

• The unit of values is mm(inch).

520(20-15/32) 400(15-3/4)

Product

Piping space

(front side)

space

330(13)

(Unit: mm(inch))

100(3-15/16)

Hydro Kit

Service space

(front side)

600(23-5/8)

(Unit: mm(inch))

space

H-Beam supporter

631(24-16/19)631(24-16/19)

100(3-15/16) 100(3-15/16)

100(3-15/16)

200(7-7/8)

300(11-13/16)

Service space

(left side)

Service space

(front side)

400(15-3/4)520(20-15/32)

Piping space

(front side)

350(13-25/32)

600(23-5/8)

space

Installation

ENGLISH

(Unit : mm(inch))

100(3-15/16)

1 074(42-9/32)1 074(42-9/32)

(Unit : mm(inch))

Anti Vibration material

space

H-Beam supporter

Concrete supporter

100(3-15/16) 100(3-15/16)

100(3-15/16)

200(7-7/8)

Hydro Kit

Installation Manual 15

Installation

Minimum floor area

(for R32)

- The appliance shall be installed, operated and stored in a room with a floor area larger than the minimum area.

- Use the graph of table to determine the minimum area.

Amin (m2)

- m : Total refrigerant amount in the system.

- Total refrigerant amount : factory refrigerant charge + additional refrigerant amount.

- Amin : minimum area for installation.

600

500

400

300

200

100

0 1.224 2 3 4 5 6 7 8

Floor standing

Wall mounted Ceiling mounted

m (kg)

Floor location

m (kg) Amin (m

< 1.224

1.224

1.4 16.82

1.6 21.97

1.8 27.80

2 34.32

2.2 41.53

2.4 49.42

2.6 58.00

2.8 67.27

3 77.22

3.2 87.86

3.4 99.19

3.6 111.20

3.8 123.90

4 137.29

4.2 151.36

4.4 166.12

Hydro Kit

12.9

Floor location

)

m (kg) Amin (m

4.6 181.56

4.8 197.70

5 214.51

5.2 232.02

5.4 250.21

5.6 269.09

5.8 288.65

6 308.90

6.2 329.84

6.4 351.46

6.6 373.77

6.8 396.76

7 420.45

7.2 444.81

7.4 469.87

7.6 495.61

7.8 522.04

)

Wall mounted

m (kg) Amin (m

< 1.224

1.224

1.4 1.87

1.6 2.44

1.8 3.09

2.2 4.61

2.4 5.49

2.6 6.44

2.8 7.47

3.2 9.76

3.4 11.02

3.6 12.36

3.8 13.77

4.2 16.82

4.4 18.46

1.43

2 3.81

3 8.58

4 15.25

Wall mounted

)

m (kg) Amin (m

4.6 20.17

4.8 21.97

5 23.83

5.2 25.78

5.4 27.80

5.6 29.90

5.8 32.07

6 34.32

6.2 36.65

6.4 39.05

6.6 41.53

6.8 44.08

7 46.72

7.2 49.42

7.4 52.21

7.6 55.07

7.8 58.00

)

Ceiling Mounted

m (kg) Amin (m

< 1.224

1.224

1.4 1.25

1.6 1.63

1.8 2.07

2.2 3.09

2.4 3.68

2.6 4.31

2.8 5.00

3.2 6.54

3.4 7.38

3.6 8.27

3.8 9.22

4.2 11.26

4.4 12.36

0.956

2 2.55

3 5.74

4 10.21

Ceiling Mounted

)

m (kg) Amin (m

4.6 13.50

4.8 14.70

5 15.96

5.2 17.26

5.4 18.61

5.6 20.01

5.8 21.47

6 22.98

6.2 24.53

6.4 26.14

6.6 27.80

6.8 29.51

7 31.27

7.2 33.09

7.4 34.95

7.6 36.86

7.8 38.83

)

Installation

Flat washer

Anchor bolt

Spring washer

Nut

Anti-vibration material

Concrete base

Support

75(2-15/16)

3 or more screw threads of the 2 bolts must be shown

(Unit: mm(inch))

392(15-7/16)

340(13-3/8)

360(14-3/16)

(Unit: mm(inch))

392(15-7/16)

ENGLISH

Foundation for Installation

• Fix the unit tightly with bolts as shown below so that the unit will not fall down due to earthquake.

• Noise and vibration may occur from the floor or wall since vibration is transferred through the

installation part depending on installation status. Thus, use anti-vibration materials (cushion pad) fully (The base pad shall be more than 200 mm (7-7/8 inch)).

CAUTION

• When mechanical connectors are reused indoors, sealing parts shall be renewed. (for R32)

• When flared joints are reused indoors, the flare part shall be re-fabricated. (for R32)

Drain pipe connection (For Medium Temperature)

Hydro Kit

- Do not install in upward direction.

- Install the drain pipe in downward direction (1/50-1/100).

Hydro Kit

does not use the drain pump.

drain connection pipe is PT 1.

Hydro kit Hydro kit

Hydro Kit

Installation Manual 17

Installation

Water Piping and Water Circuit Connection

General Considerations

Followings should be considered before beginning water circuit connection.

• Service space should be secured.

• Water pipes and connections should be cleaned using water.

• Space for installing external water pump should be provided.

• Never connect electric power while proceeding water charging.

Water Piping and Water Circuit Connection

While installing water pipes, followings should be considered :

While inserting or putting water pipes, close the end of the pipe with pipe cap to avoid dust entering.

•

• When cutting or welding the pipe, always be careful that inner section of the pipe should not be defective. For example, no weldments or no burrs are found inside the pipe.

• Pipe fittings (e.g. L-shape elbow, T-shape tee, diameter reducer, etc) should be tightened strongly to be free from water leakage.

• Connected sections should be leakage-proof treatment by applying tefron tape, rubber bushing, sealant solution, etc.

Appropriate tools and tooling methods should be applied to prevent mechanical breakage of the connections.

•

• Operation time of flow valve(e.g. 3way valve or 2way valve) should be less than 90 seconds.

• Pipe is insulated to prevent heat loss to external environment.

Strainer

- Use the 30 mesh strainer. (Exclude scale diameter of 0.8 mm or less and other net)

- Check the strainer direction and assemble on the inlet hole (Refer to picture)

- Wrap the Teflon tape on the screw thread of the water pipe for more than 15 times for assembly.

- Install the service port facing downward. (Within left/right 45 degrees)

- Check if there is any leakage on the connecting part.

- Clean the strainer periodically. (Once a year or more frequent)

Water In

Hydro Kit

Front

45°

Side

Strainer

Installation

Water cycle minimum requirements

1. For selecting the components of the hydraulic system, be sure they are above the design water

pressure.

2. For the water pipe, diffusely tight water pipes are recommended instead of steel pipes.

3. For the drain pipe size, use the same diameter as the product connected or larger. Always install a

natural drainage so that the drained water does not flows back

4. Install insulated material across the total hydraulic piping to prevent condensation and to prevent

low cooling or heating capacity during heat transfer losses. If the temperature is higher than 30 °C and the humidity is higher than 80 % the insulation material must be minimum 20 mm thick to prevent condensation.

5. Install the shut-off valve (1) to block the water by closing the valve when replacing the component

or cleaning.

6. Install an expansion tank (2) based on the water volume of the hydraulic system.

7. Install the drain valve (3) that can be used for draining the water inside when replacing the

component or providing service.

8. Install a magnetic dirt separator (4) at the inlet water pipe If the air separator is not installed there

can be formed air bubbles inside the hydraulic system. Flow error will be showed first on remote controller, however finally a plate heat exchanger may burst during combined circumstances.

9. Install a circulation pump (5) which meets the water flow specifications mentioned inside product

data book.

10. Install the strainer (6) at the inlet water pipe connection to protect the PHE. Do not charge water

into the water pipe directly during Hydro Kit operation. If the strainer is not installed, component malfunction of Hydro Kit may occur.

- For the strainer, use one with 30 mesh or above with measurement diameter of 0.8 mm or less.

- Always install the strainer on the horizontal pipe.

11. Install a balancing valve (with flow meter) (8)

12. Install an automatic air separator in the outlet water pipe (9)

13. Install pressure safety relief valve (10) in vertical upright position that meets the design water

pressure to prevent unit or water pipe damage during pressure increase inside the water pipe system.

14. Install a pressure meter (11) in the outlet water pipe.

15. Install in case of cascade hydraulic systems or bivalent systems a flow-check valve (12) at each

outlet water pipe.

16. Install a buffer tank (13) of at least 10L/kW heating capacity in order to have a correct defrost

cycle, if there is no knowledge about the type and dimensions of the heating system. If there is no buffer tank installed, the product can be damaged during normal operation or defrost operation.

17. After product operation for 2 weeks in case of new installation, clean the water filter. In the

beginning of operation small particular dirt from installing process can block the filter which can lead to damage of the product.

ENGLISH

Hydro Kit

Installation Manual 19

Installation

Field SupplyLG Supply

Drainage

1 Shut-Off valve 8 Balancing valve with flow meter 2 Expansion tank 9 Automatic air separator 3 Service port(Drain valve) 10 Pressure safety relief valve 4 Magnetic filter(Recommended) 11 Pressure meter 5 Water Pump 12 Check valve 6 Strainer 7 Flow switch (included in product)

Buffer tank /

DHW1)(Sanitary Water) Tank

NOTE

Install the closed loop type water pipe system. Balancing valve with flow meter is recommended to ensure 100 % of the nominal flow.

DHW : Domestic Hot Water.

Heating

Cooling

Hydro Kit

Installation

Installation Scenes

Installation scenes are presented for example.

Installer should optimize the installation scene according to the installation conditions and local/national regulation.

i.e. Shut-off valves position for spare water pump and water pump service, Flexible joint installation to prevent noise and vibration.

1) Space Heating/Cooling1)Installation

ENGLISH

Wi-fi Module

(PWFMDD200)

Field SupplyLG Supply

Drainage

Remote temperature

sensor(PQRSTA0)

Water Supply

FCU

(Cooling → Close)

Wired Remote

Controller

Hydro Kit

Installation Manual 21

Installation

1 Shut-Off valve 8 Balancing valve with flow meter 2 Expansion tank 9 Automatic air separator 3 Service port(Drain valve) 10 Pressure safety relief valve

Magnetic filter (Mandatory with

Corrosive material of pipe)

11 Pressure meter

5 Water Pump 12 Check valve 6 Strainer 13 Buffer Tank 7 Flow switch (included in product) 14 Water Tank temperature Sensor (12 m)

- For space heating / cooling, ‘DIP switch #2’ should be set correctly.

- For sensing air temperature at specific area, remote temperature sensor(PQRSTA0) or wired remote controller could be choose, depending on the ‘DIP switch #3’ setting. *please refer the “System Set-Up, DIP Switch Setting”

- Wi-Fi module(PWFMDD200/105 cm) connected to ‘CN-WF’ on Hydro kit PCB. To increase the length between Wi-Fi modem and Hydro Kit, please purchase USB Extension Cable(PWYREW000, 10 m)

- In case of floor cooling, please make sure to set cooling cut off temperature for preventing condensation on the floor

- For 2 way valve control, please refer the “Accessories Installation, 2 Way valve”

Mode Condition 2-way valve

Cooling

FCU – ‘Not use’ Open

FCU – ‘Use’ Close

Heating None No control

NOTE

- Balancing valve with flow meter is recommended to ensure 100 % of the nominal flow. If the water flow rate is too low or High, PHEX could be frozen and burst or capacity could be reduced.

Cooling operation is only available for Medium temperature Hydro Kit.

Hydro Kit

Installation

2) Water Tank(DHW) Installation

Wi-fi Module

(PWFMDD200)

Field SupplyLG Supply

Drainage

Wired Remote

Controller

Water Supply

1 Shut-Off valve 2 Expansion tank 3 Service port(Drain valve)

Magnetic filter (Mandatory with

Corrosive material of pipe) 5 Water Pump 6 Strainer 7 Flow switch (included in product) 8 Balancing valve with flow meter 9 Automatic air separator

10 Pressure safety relief valve

11 Pressure meter

12 Check valve

13 Buffer Tank 14 Water Tank temperature Sensor (12 m)

ENGLISH

- For water tank(DHW) operation, DIP switch #2 in Hydro Kit PCB should be set correctly, please refer the “System Set-Up, DIP Switch Setting”

- Wi-Fi module(PWFMDD200, 105 cm) is connected to ‘CN-WF” on Hydro Kit PCB. To increase the length between Wi-Fi modem and Hydro Kit, please purchase USB Extension Cable(PWYREW000, 10 m)

- DHW(Sanitary water) tank should be located at the flat place.

- Water quality should comply with EN 98/83 EC Directives.

- DHW(Sanitary water) tank (indirect heat exchange), do not use anti water-freezing treatment like ethylene glycol.

- It is highly recommend to wash out inside of the DHW(Sanitary water) tank after installation for clean hot water.

- Near the DHW(Sanitary water) tank , there should be water supply and water drain for easy access and maintenance.

Water tank temperature sensor(14) connection

If hot water mode is used, make sure to install sensor to

Process PT 1/2 inch

female bolt

water tank.

• Make PT 1/2inch female bolt hole in the water tank and install sensor in the water tank.

Water Tank

Temperature Sensor

PT 1/2 inch male

Sensor holder

Inside water tank

Water tank outer wall

• Push the sensor into the hole of the sensor holder cap.

• Lock the sensor holder cap.

• Maximum length of water tank temperature sensor is 12 m.

Hydro Kit

Installation Manual 23

Installation

3) Water Tank(DHW) + Floor Heating Installation(Default)

Remote temperature

sensor(PQRSTA0)

Wi-fi Module

(PWFMDD200)

LG Supply

Field Supply

Drainage

Shut-Off valve

Expansion tank

Service port(Drain valve)

Magnetic filter(Recommended)

Water Pump

Strainer

Flow switch (Included in product)

FCU

(Cooling → Close)

Water Supply

Balancing valve with flow meter

Automatic air separator

Pressure safety relief valve

Pressure meter

Check valve

DHW1)(Sanitary Water) Tank

Water Tank temperature Sensor (12 m)

Wired Remote Controller

- For DHW / Floor Heating operation , ‘DIP switch #2’ should be set correctly.

- Wi-Fi module(PWFMDD200/105 cm) connected to ‘CN-WF’ on Hydro kit PCB. To increase the length between Wi-Fi modem and Hydro Kit, please purchase USB Extension Cable(PWYREW000, 10 m)

- In case of floor cooling, please make sure to set cooling cut off temperature for preventing condensation on the floor

- For 3-way, 2-way valve control, please refer the “Accessories Installation”

Mode Condition 3-way valve direction 2-way valve

Cooling

Heating

FCU – ‘Not use’ Under Floor Open

FCU – ‘Use’ Under Floor Close

Priority – ‘DHW’ DHW / Sanitary Water Tank No control

Priority – ‘UFH’ Under Floor No control

NOTE

- The Heating operation mode of the hot water tank is not a mode selection by the remote controller, it changes the 3-way valve direction to Water Tank base on the water tank temperature.

- It is impossible to operate Hot water(DHW) during cooling mode.

Hydro Kit

4) Water Tank(DHW) + Floor Heating + Solar booster Installation

Field Supply

LG Supply

Drainage

Water Supply

FCU

(Cooling → Close)

Wired Remote Controller

Wi-fi Module

(PWFMDD200)

Water Supply

Remote temperature

sensor(PQRSTA0)

Shut-Off valve

Expansion tank

Service port(Drain valve)

Magnetic filter(Recommended)

Water Pump

Strainer

Flow switch (Included in product)

Balancing valve with flow meter

Automatic air separator

Pressure safety relief valve

Pressure meter

Check valve

DHW1)(Sanitary Water) Tank

Water Tank temperature Sensor (12 m)

Solar panel

Installation

ENGLISH

- For DHW / Floor Heating and Solar booster operation , ‘DIP switch #2’ should be set correctly.

- Wi-Fi module(PWFMDD200/105cm) connected to ‘CN-WF’ on Hydro kit PCB. To increase the length between Wi-Fi modem and Hydro Kit, please purchase USB Extension Cable(PWYREW000, 10 m)

- In case of floor cooling, please make sure to set cooling cut off temperature for preventing condensation on the floor

- DHW(Sanitary water) tank should be located at the flat place.

- Water quality should comply with EN 98/83 EC Directives.

- DHW(Sanitary water) tank (indirect heat exchange), do not use anti water-freezing treatment like ethylene glycol.

- It is highly recommend to wash out inside of the DHW(Sanitary water) tank after installation for clean hot water.

- Near the DHW(Sanitary water) tank , there should be water supply and water drain for easy access and maintenance.

- For 2-way or 3-way valve control, please refer the “Accessories Installation”.

Hydro Kit

Installation Manual 25

+ 56 hidden pages

LG ARNH04GK3A4 INSTALLATION MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual