LG ARNH18GK1A4 INSTALLATION MANUAL

INSTALLATION MANUAL

AIR CONDITIONER

ENGLISH

ITALIANO

ESPAÑOL FRANÇAIS DEUTSCH

ΕΛΛΗΝΙΚΆ

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.

Hydro Kit Wall mounted (medium temperature) Original instruction (R32)

MFL67086714

Rev.00_072120

www.lg.com

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

TABLE OF CONTENTS

ENGLISH

TABLE OF CONTENTS

4 SAFETY INSTRUCTIONS

12 INSTALLATION PART

13 GENERAL INFORMATION

13 Model Information 13 Accessories

16 INSTALLATION

16 Transporting the Unit 16 Selection of the best location

20 INSTALLATION OF INDOOR UNIT

20 Conditions where Indoor Unit is Installed

23 PIPING AND WIRING FOR INDOOR UNIT

23 Water Piping and Water Circuit Connection 26 Water pump Capacity 26 Pressure Drop 28 Typical Installation Example 31 Water cycle (For R32) 33 Water Quality 33 Frost protection 34 Preparation for Piping 35 Electrical Wiring 36 Wiring Connection 39 Connecting Cables

40 ACCESSORIES INSTALLATION

40 Before Installation 40 Thermostat 44 DHW Tank 47 DHW Tank Kit 49 Solar Thermal Kit 50 Dry Contact 52 External Controller - Setting up programmable digital input operation 53 Remote Temperature Sensor 55 Solar pump 56 Wi-ﬁ Modem 57 2Way Valve 58 3Way Valve(A) 59 3Way Valve(B) 60 Final check

61 SYSTEM SET-UP

61 DIP Switch Setting

66 SERVICE SETTING

66 How to enter service setting 66 Service setting 67 Service contact 68 Model information 69 RMC version lnformation 70 Open source license 71 Installer setting 73 3 Minutes Delay 74 Select Temperature Sensor 75 Dry Contact Mode 76 Pump test run 77 Air cooling set temp. 78 Water cooling set temp. 79 Air heating set temp. 80 Water heating set temp. 81 DHW set temp. 82 Water supply off temp. during cooling 84 Heater priority 85 DHW time setting 86 TH on/off Variable, heating air 87 TH on/off Variable, heating water 88 TH on/off Variable, cooling air 89 TH on/off Variable, cooling water 90 Heating temp. setting 91 Cooling temp. setting 92 Pump setting in heating 93 Pump setting. in cooling 94 Forced operation 95 CN_CC 96 Pump frequency setting (RPM) 97 Pump Capacity 98 CN_EXT 99 Anti-freezing Temperature 100 Pump Prerun/Overrun 101 Solar Thermal System 103 Current ﬂow rate 104 Data logging 105 Password Initialization 106 Troubleshooting

TABLE OF CONTENTS

ENGLISH

SAFETY INSTRUCTIONS

ENGLISH

SAFETY INSTRUCTIONS

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 (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.

SAFETY INSTRUCTIONS

• 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.

• 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.

ENGLISH

• 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.

SAFETY INSTRUCTIONS

ENGLISH

• 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)

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

SAFETY INSTRUCTIONS

• 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.

ENGLISH

• 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 product in a tightly closed space for a long time.

- Oxygen deficiency could occur.

SAFETY INSTRUCTIONS

ENGLISH

• 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.

SAFETY INSTRUCTIONS

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

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

ENGLISH

•

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.

SAFETY INSTRUCTIONS

ENGLISH

• 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.

• 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.

• Do not install the unit in potentially explosive atmospheres.

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.

SAFETY INSTRUCTIONS

• 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.

ENGLISH

INSTALLATION PART

ENGLISH

INSTALLATION PART

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 product box.

INDOOR UNIT BOX

Item Image

Indoor unit

Owner's / Installation manual

Shut-off valve

Installation Sheet

Hydro Kit

GENERAL INFORMATION

ENGLISH

With advanced inverter technology,

Hydro Kit

is suitable for applications like under floor heating, and hot water generation. By Interfacing to various accessories user can customize the range of the application.

Model Information

Model name and related information

Model Name

Refrigerant

R32 1Ø

Indoor Unit

Phase Capacity (kW)

5.6

7.1

9.0

Built-In Electric

Heater(kW)

6 (3+3)

Power Source

(Electric Heater)

220-240 V~

50 Hz

Power

Source (Unit)

220-240 V~

50 Hz

Accessories

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

GENERAL INFORMATION

ENGLISH

Accessories supported by LG Electronics

Item Purpose Model

DHW Tank Kit To operate with DHW tank

Remote Air Sensor

Dry Contact

Solar Thermal Kit To operate with solar heating system PHLLA(Limit temperature : 96 °C)

DHW Tank To generate and store hot water

Thermistor for DHW Tank

Drain Pan To prevent drain water drop PHDPB

Central Controller

Wi-Fi Modem

Extension wire

Cover Plate

To control by air temperature PQRSTA0

To receive on & off external signal PDRYCB500

Dry Contact For Thermostat PDRYCB300

To control hot water temperature of DHW tank

Multiple installed products into one central control

To enable remote system operation from smartphone

To connect remote controller with Indoor PCB for communication

To relocate remote controller from indoor unit

PHLTA : 1Ø PHLTC : 3Ø

PHS02060310 : 200 liter, Single Heating Coil, 1Ø 230 V 50 Hz 3 kW Electric Heater PHS02060320 : 200 liter, Double Heating Coil, 1Ø 230 V 50 Hz 3 kW Electric Heater PHS03060310 : 300 liter, Single Heating Coil, 1Ø 230 V 50 Hz 3 kW Electric Heater PHS03060320 : 300 liter, Double Heating Coil, 1Ø 230 V 50 Hz 3 kW Electric Heater

PHRSTA0

PWFMDD200

PZCWRC1

PDC-HK10

Accessories supported by 3rd party Companies

Item Purpose Specification

Solar Heating System

Thermostat To control by air temperature

3rdParty Controller

3way valve and actuator

2way valve and actuator To control water flow for Fan Coil Unit

To generate auxiliary heating energy for water tank

To connect external controller using modbus protocol

(A) : To control water flow for hot

water heating or floor heating / To control water flow when installing 3rd party boiler

(B) : To control close/open mode of

solar circuit

GENERAL INFORMATION

• Solar collector

• 3way valve(B)

Heating-Only type (230 V AC) Cooling/Heating type (230 V AC with Mode selection switch)

3 wire, SPDT (Single Pole Double Throw) type, 230 V AC

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

ENGLISH

INSTALLATION

ENGLISH

INSTALLATION

Transporting the Unit

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.

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

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.

600

Amin (m2)

ENGLISH

500

400

300

200

100

0 1.224 2 3 4 5 6 7 8

- m : Total refrigerant amount in the system

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

- Amin : minimum area for installation

Floor standing

m (kg) Amin (m

< 1.224

1.224 12.9

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

)

Floor standing

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 1.43

1.4 1.87

1.6 2.44

1.8 3.09 2 3.81

2.2 4.61

2.4 5.49

2.6 6.44

2.8 7.47 3 8.58

3.2 9.76

3.4 11.02

3.6 12.36

3.8 13.77 4 15.25

4.2 16.82

4.4 18.46

)

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 0.956

1.4 1.25

1.6 1.63

1.8 2.07 2 2.55

2.2 3.09

2.4 3.68

2.6 4.31

2.8 5.00 3 5.74

3.2 6.54

3.4 7.38

3.6 8.27

3.8 9.22 4 10.21

4.2 11.26

4.4 12.36

)

Floor standing

Wall mounted Ceiling mounted

m (kg)

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

ENGLISH

If this product is installed in the a room smaller than minimum floor area, there shall be continuously operated mechanical ventilation system or natural ventilation openings.

Natural ventilation

[Room A]

→ ≥ 50 % of Anv

[Room B]

min

≥ 1.5 m

Unit

→ ≥ 100 % of Anv

min

The floor area of “Room A + Room B” is considered as floor area instead of “Room A” for

min

complying with minimum floor area “A

” if :

- Openings are permanent openings which cannot be closed.

- Room A shall be larger than 0.64 m

Bottom opening:

- The area of any openings above 300 mm from the floor shall not be considered in determining compliance with Anv

- At least 50 % of the required opening area Anv

min

shall be below 200 mm from the floor.

- The bottom of the lowest openings shall not be higher than 100 mm from the floor.

- If the openings starts from the floor, the height must be higher than 20 mm.

Top opening:

- The total size of the top opening shall not be less than 50 % of minimum opening area for

min

Anv

and shall be at least 1.5 m above the floor.

min

- Anv

: the minimum opening for natural ventilation

m (kg) A

min

1.224 51.2

1.4 73.5

1.6 98.8

1.8 124.1

2.0 149.4

2.2 174.7

2.4 200.0

2.6 225.3

2.8 250.6

3.0 275.9

(cm2)

m (kg) A

3.2 301.2

3.4 326.5

3.6 351.8

3.8 377.1

4.0 402.4

4.2 427.7

4.4 453.0

4.6 478.3

4.8 503.6

5.0 528.9

min

(cm2)

INSTALLATION

Mechanical ventilation If there is a mechanical ventilation system that satisfies with minimum air flow, a product can be

installed in the room smaller than the minimum floor area.

• The room shall comply with machinery room’s requirements of ISO 5149.

m (kg) A

min

(m2)

< 1.224 -

1.224 1.43

1.3 1.61

1.4 1.87

1.5 2.15

1.6 2.44

1.7 2.76

1.8 3.09

1.9 3.44 2 3.81

2.1 4.20

2.2 4.61

2.3 5.04

2.4 5.49

2.5 5.96

2.6 6.44

2.7 6.95

ENGLISH

INSTALLATION OF INDOOR UNIT

ENGLISH

INSTALLATION OF INDOOR UNIT

The indoor unit of and refrigerant pipe from the outdoor unit are accessible at the same time.

In this chapter conditions for installation place is described. In addition, considerations when installing accessories or 3rd party accessories are described, too.

Conditions where Indoor Unit is Installed

Specific conditions are required for installation place such as service space, wall mounting, water pipe length and height, total volume of water, adjusting expansion vessel, and water quality.

General Considerations Followings are should be considered before the installation of the indoor unit.

- 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.

Hydro Kit

is installed inside where terminal of under floor water pipe cycle

Service Space

- Ensure that the spaces indicated by arrows 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.

NOTE

• The default setting of the product is for heating only. To use the cooling system together, DIP S / W 4 should be turned ON and additional drain pan accessory should be installed.

200

1 300

Minimum service space

(unit : mm)

250

200

INSTALLATION OF INDOOR UNIT

Bottom screws

Upper screw

Mounting to Wall Step 1. Disconnect the remote control case from the front panel and disconnect the remote

control cable.

CAUTION

After installation is completed, return the remote control to its original state.

NOTE

Use a flat-blade screwdriver or a coin to remove the remote control case.

Step 2. After releasing five screws, detach front cover from the indoor unit. While detaching the

front cover, grab the left and right sides of the front cover. Then pull into upward direction.

ENGLISH

Step 3. Attach "Installation Sheet" to the wall and mark the location of bolts.

This sheet helps to find correct location to the bolts.

CAUTION

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

INSTALLATION OF INDOOR UNIT

ENGLISH

Step 4. Detach the Installation sheet. Screw bolts at the hole marks on the wall.

When screwing bolts, use M8 ~ M11 anchor bolts to secure hanging the indoor unit.

NOTE

Self drilling screw can be used as alternatives of M8 ~ M11 anchor bolts. But M8 ~ M11 anchor bolts are more preferred.

Step 5. Hang the indoor unit at the supporting plate.

PIPING AND WIRING FOR INDOOR UNIT

Procedures about water piping and electric wiring at the indoor unit are described in this chapter. Water piping and water circuit connection, water charging, pipe insulations will be shown for water piping procedures. For wiring, terminal block connection, connecting with the outdoor unit, electric heater wiring will be introduced. Accessories connection, such as sanitary water tank, thermostat, 3way or 2way valves, etc will be dealt in separated chapter.

Water Piping and Water Circuit Connection

CAUTION

General Considerations Followings are 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 if internal water pump capacity is not enough for installation field.

- Never connect electric power while proceeding water charging.

Water Piping and Water Circuit Connection Definition of terms are as follow :

- Water piping : Installing pipes where water is flowing inside the pipe.

- Water circuit connecting : Making connection between the product and water pipes or between pipes and pipes. Connecting valves or elbows are, for example, in this category.

ENGLISH

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.

- Drain piping should be provided in case of water discharge by the operation of the safety valve. This situation can be happened when the internal pressure is over 3.0 bar and water inside the indoor unit will be discharged to drain hose.

While connecting water pipes, followings should be considered.

- 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 control valve(e.g. 3way valve or 2way valve) should be less than 90 seconds.

- Drain hose should be connected with drain piping.

ENGLISH

PIPING AND WIRING FOR INDOOR UNIT

WARNING

Installing shut-off valve

• While assembling two shut-off valves, that are found inside ‘AWHP Installation Kit (AET69364401)’, pop sound will be heard when valve is open or close by rotating handles. It is normal condition because the sound is due to leakage of charged nitrogen gas inside the valve. The nitrogen gas is applied to secure quality assurance.

• Before starting water charging, these two shut-off valves should be assembled with water inlet and outlet pipe of the indoor unit.

Water condensation on the floor While cooling operation, it is very important to keep leaving water temperature higher than

16 °C. Otherwise, dew condensation can be occurred on the floor. If floor is in humid environment, do not set leaving water temperature below 18 °C.

Water condensation on the radiator While cooling operation, cold water may not flow to the radiator. If cold water enters to the

radiator, dew generation on the surface of the radiator can be occurred.

Drainage treatment While cooling operation, condensed dew can drop down to the bottom of the indoor unit. In

this case, prepare drainage treatment (for example, vessel to contain condensed dew) to avoid water drop.

PIPING AND WIRING FOR INDOOR UNIT

Water Charging For water charging, please follow below procedures. Step 1. Open all valves of whole water circuit. Supplied water should be charged not only inside

the indoor unit, but also in the under floor water circuit, sanitary water tank circuit, FCU water circuit, and any other water circuits controlled by the product.

Step 2. Connect supply water into drain valve and fill valve located at the side of the shut-off

valve.

CAUTION

No water-leakage permitted at the drain and fill valve. Leakage-proof treatment which is described in previous section should be applied.

Water Out Water In

Step 3. Start to supply water. While supplying water, following should be kept.

- Pressure of supplying water should be 2.0 bar approximately.

- For supplying water pressure, time to be taken from 0 bar to 2.0 bar should be more than 1 minute. Sudden water supply can yield water drain through safety valve.

- Fully open the cap of air vent to assure air purging. If air is exist inside the water circuit, then performance degrade, noise at the water pipe, mechanical damage at the surface of electric heater coil.

Step 4. Stop water supplying when the pressure gauge located in front of the control panel

indicates 2.0 bar.

Step 5. Close drain valve and fill valve. Then wait for 20~30 seconds to observe water pressure

being stabilized.

Step 6. If following conditions are satisfactory, then go to step 7(pipe insulation). Otherwise, go

to step 3.

- Pressure gauge indicates 2.0 bar. Note that sometimes pressure in decreased after step 5 due to water charging inside expansion vessel.

- No air purging sound is heard or no water drop are popping out from air vent.

ENGLISH

Pipe Insulation Purpose of water pipe insulation is :

- To prevent heat loss to external environment

- To prevent dew generation on the surface of the pipe in cooling operation

PIPING AND WIRING FOR INDOOR UNIT

ENGLISH

Water pump Capacity

The water pump use variable type which is capable to change flow rate, so it may be required to change default water pump capacity in case of noise by water flow. In most case, however, it is strongly recommended to set capacity as

Rated flow-rate

NOTE

• To secure enough water flow rate, do not set water pump capacity as Minimum. It can lead unexpected flow rate error CH14.

Pressure Drop

NOTE

When installing the product, install additional pump in consideration of the pressure loss and pump performance. If flow-rate is low, overloading of product can occur.

Capacity

[kW]

5.6 25.9 6.1 0.4 5.7

7.1 20.1 7.3 0.3 7.0

9.0 15.8 7.5 0.2 7.3

Rated flow-rate

[LPM]

Pump Head [m]

(at rated flow-rate)

Product pressure

drop [m]

(Plate heat exchanger)

Serviceable

Head [m]

PIPING AND WIRING FOR INDOOR UNIT

MGQ62321902 : UPM3K GEO 20 - 75 CHBL (5 kW, 7 kW, 9 kW / for R32)

Performance test based on standard ISO 9906 with pre-pressure 2.0bar and liquid temperature 20 °C.

ENGLISH

WARNING

Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.

PIPING AND WIRING FOR INDOOR UNIT

Outdoor Indoor

Outdoor Unit

Indoor Unit

Floor heating loop

Fan coil unit

Radiator

M / F

High Temperature Room Thermostat(Field supply)

2way valve (Field supply) By-pass valve(Field supply)Low Temperature

Magnetic Filter (Recommended)

Shut-off valve

M / F

ENGLISH

Typical Installation Example

CAUTION

Hydro Kit

operated together. If entering water temperature of will stop operation to prevent mechanical damage of the product. 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

is installed with pre-existing boiler, the boiler and

Hydro Kit

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

Hydro Kit

is above 50 °C, the system

should not be

NOTE

• 2way valve

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

- 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.

CASE 2: Connecting DHW Tank

Outdoor Indoor

Outdoor Unit

Indoor Unit

Floor heating loopFan coil unit

Hot water

City water

Radiator

M / F

DHWDHW

tanktank

DHW

tank

High Temperature

Room Thermostat(Field supply)

2way valve (Field supply)

3way valve (Field supply)

By-pass valve(Field supply)

Low Temperature

Shut-off valve

Magnetic Filter (Recommended)

M / F

DHW

tank

NOTE

PIPING AND WIRING FOR INDOOR UNIT

ENGLISH

• DHW tank

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

- DHW : Domestic Hot Water

PIPING AND WIRING FOR INDOOR UNIT

Solar heat source

Outdoor Indoor

Outdoor Unit

Indoor Unit

Floor heating loopFan coil unit

Hot water

City water

Radiator

M / F

DHWDHW

tanktank

DHW

tank

High Temperature

Room Thermostat(Field supply)

2way valve (Field supply)

3way valve (Field supply)

By-pass valve(Field supply)

Low Temperature

Shut-off valve

Pump(Field supply)

Magnetic Filter (Recommended)

M / F

DHW

tank

ENGLISH

CASE 3: Connecting Solar thermal system

NOTE

• DHW tank

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

very cold season.

- DHW : Domestic Hot Water

• Pump

- Maximum power consumption of pump should be less than 0.25 kW.

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