LG ThermaV12 Air to Water Heat Pump Instruction Manual

Description

Category Symbol

Meaning

Refrigerant side

S1 S2 S3 S4 S5 S6 S7 EEV1 EEV2

PHEX liquid temperature sensor Outdoor-HEX middle temperature sensor Compressor-discharge pipe temperature sensor Compressor-suction pipe temperature sensor Outdoor-HEX temperature sensor Outdoor air temperature sensor Compressor-injection pipe temperature sensor Electronic Expansion Valve (Heating/Cooling) Electronic Expansion Valve (Injection)

S12 Outlet water temperature sensor

S11 Inlet water temperature sensor S13 Backup heater outlet sensor S17 Flow sensor Water Side S19 Water pressure sensor

A1 Main Water Pump

A8 Electric backup heater(1Ø, Optional accessory) A9 Electric backup heater(3Ø, Optional accessory)

PCB Connector
CN_PIPE_IN CN_MID
CN_DISCHARGE CN_SUCTION CN_C_PIPE CN_AIR CN_VI_IN CN_EEV1 CN_EEV_MAIN
CN_WATER_OUT CN_WATER_IN
CN_TH3 CN_F_SENSOR CN_H20_PRESS CN_PUMP_A1 CN_MOTOR1 CN_HEATER_PCB
HEATER1

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36 GENERAL INFORMATION
Water cycle
– For 3 Series

Remote Room Temp. Sensor
S14
3WAY V/V_1

Shower

B/HT
S15 City Water
DHW Tank

3WAY V/V_2

S16
Solar Thermal Componets

Solor Panel

W/PUMP_2

SOLAR THERMAL SYSTEM

Ref Out Ref In

S9 S10
Unit

F/S
2WAY V/V_1

S12

W/PUMP_1

EXP/TANK

S11 M/F

Fan Coil Unit
Underfloor Heating
Radiator

Indoor Unit (Hydro-Kit)

Magnetic Filter (Mandatory)

Basic installation

DHW Tank is Installed
(DHW tank is necessary)

Solar thermal system is connected
(Solar thermal kit is necessary)

– For 4 Series

Remote Room Temp. Sensor
S14
3WAY V/V_1

Shower

B/HT
S15 City Water
DHW Tank

3WAY V/V_2

S16
Solar Thermal Componets

Solor Panel

W/PUMP_2

SOLAR THERMAL SYSTEM

GENERAL INFORMATION 37

Ref Out Ref In
S10
Unit

F/S
2WAY V/V_1

S12

W/PUMP_1

EXP/TANK

S11 M/F

Fan Coil Unit
Underfloor Heating
Radiator

Indoor Unit (Hydro-Kit)

Magnetic Filter (Mandatory)

Basic installation

DHW Tank is Installed
(DHW tank is necessary)

Solar thermal system is connected
(Solar thermal kit is necessary)

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38 GENERAL INFORMATION

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Description

Category

Symbol S9 S10 S11 S12
F/S

Meaning Refrigerant temperature sensor (Gas side) Refrigerant temperature sensor (Liquid side) Water temperature sensor (Water In) Water temperature sensor (Water Out)
Flow Switch

E/HT Electric Heater
Unit W_PUMP1 Internal Water Pump EXP/TANK Expansion Tank S14 Remote Air temperature sensor CTR/PNL Remote Controller 2WAY V/V_1 To control water flow for Fan Coil Unit
M / F Magnetic Filter

W/TANK DHW Tank

B/HT Booster heater(in DHW tank)

Water Heating

– Flow control for water which is leaving from unit. 3WAY V/V_1 – Flow direction switching between underfloor and
water tank

CITY WATER

Water to be heated by Indoor unit and B/HT of W/TANK

SHOWER Water supplied to end-user

S15 W/TANK water temperature sensor

S16 Solar-heated water temperature sensor

3WAY V/V_2

– Flow control for water which is heated and circulated by SOLAR THERMAL SYSTEM. – Flow direction switching between SOLAR THERMAL SYSTEM and W/TANK

PCB Connector CN_PIPE_OUT CN_PIPE_IN
Water _IN Water _OUT CN_FLOW1
CN_E/HEAT(A) CN_E/HEAT(B)
CN_MOTOR1 (no connector)
CN_ROOM CN_REMO CN_2WAY(A)
(No connector)
(no connector)
CN_B/HEAT(A)
CN_3WAY(A)
(no connector) (no connector)
CN_TH4
CN_3WAY(B)

Remarks
– Meaning is expressed based on Cooling mode.
– Optional accessory (sold separately) – Model : HA**1A E1 – Heating capacity is divided into two level : partial capacity by E/HEAT(A) and full capacity by E/HEAT(A) + E/HEAT(B). – Operating power(220-240 V~ 50 Hz) of E/HEAT(A) and E/HEAT(B) are supplied by external power source via relay connector and ELB. – Water Pump is connected at CN_MOTOR1 – Absorb volume change of heated water, – Optional accessory (sold separately) – Model : PQRSTA0
– 3rd party accessory and Field installation (sold separately) – 2 wire NO or NC type 2way valve is supported. – 3rd party accessory and Field installation (sold separately) – It is Mandatory to install an additional filter on the heating water circuit. – 3rd party accessory and Field installation (sold separately) – Generating and storing DHW 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
– Field installation – S15 and S16 are connected at 4 pin type connector CN_TH4. – S15 is a part of DHW tank kit.(Model : PHLTB) – S16 is a part of solar thermal kit (Model:PHLLA)
– 3rd party accessory and Field installation (sold separately) – SPDT type 3way valve is supported.

Solar Heating

W_PUMP/2 External Water Pump

CN_W/PUMP(B)

– 3rd party accessory and Field installation (sold separately) – If water pump of SOLAR THERMAL SYSTEM is incapable of circulation,external water pump can be used.

SOLAR THERMAL SYSTEM

– This system can include following components :

Solar panel, Sensors, Thermostats, Interim heat

exchanger, Water pump, etc.

(no connector)

– To utilized hot water heated by SOLAR THERMAL

SYSTEM, end-user must by LG AWHP Solar-Kit.

– 3rd party accessory and Field installation (sold separately)

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INSTALLATION 39
INSTALLATION
Transporting the Unit
· When carrying the suspended unit, pass the ropes between legs of base panel under the unit. · Always lift the unit with ropes attached at four 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. · Forklift trucks are not available without a palette. · Be careful not to damage the product when moving the forklift.
Sub line

40º or less

Air outlet grille

Corner Handle

Intake hole

Always hold the unit by the corners, as holding it by the side intake holes on the casing may cause them to deform.

Forklift

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40 INSTALLATION
Installation places
– If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser 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 Unit weight into account and select a place where noise and vibration are minimum. – Select a place so that the warm air and noise from the air conditioner do not disturb neighbors. – Place that can sufficiently endure the weight and vibration of the outdoor unit and where even
installation is possible – Place that has no direct influence of snow or rain – Place with no danger of snowfall or icicle drop – Place without weak floor or base such as decrepit part of the building or with a lot of snow
accumulation

More than 300

Awning

• : Please secure the space to Maintain the shut-off valve and strainer.

oFbesntcaecloers

*Minimum 300

More than 600 More than 700

Unit : mm

! CAUTION
Be very careful while carrying the product.
· Do not have only one person carry product if it is more than 20 kg.
· PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.
· Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in your hands.
· 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 in Unit, be sure to support it at four points. Carrying in and lifting with 3-point support may make Outdoor Unit unstable, resulting in a fall.
· Use 2 belts of at least 8 m long.
· Place extra cloth or boards in the locations where the casing comes in contact with the sling to prevent damage.
· Hoist the unit making sure it is being lifted at its center of gravity.

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INSTALLATION 41
Installation at Seaside
! CAUTION
· Unit should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
· Do not install the unit where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the unit. Corrosion, particularly on the condenser and evaporator fins, could cause unit malfunc-tion or inefficient performance.
· If unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise it needs additional anticorrosion treatment on the heat exchanger.
Selecting the location
· If the unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided. Install the unit on the opposite side of the sea wind direction.

Sea wind

Sea wind

· In case, to install the unit on the seaside, set up a windbreak not to be exposed to the sea wind.

Windbreak Sea wind

– It should be strong enough like concrete to prevent the sea wind from the sea.
– The height and width should be more than 150 % of the unit.
– It should be keep more than 700 mm of space between unit and the windbreak for easy air flow.

· Select a well-drained place.
– If you can’t meet above guide line in the seaside installation, please contact your supplier for the additional anticorrosion treatment.
– Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
Seasonal Wind and Cautions in Winter
· Sufficient measures are required in a snow area or severe cold area in winter so that unit can be operated well.
· Get ready for seasonal wind or snow in winter even in other areas. · Install a suction and discharge duct not to let in snow or rain. · Install the unit not to come in contact with snow directly. If snow piles up and freezes on the air
suction hole, the system may malfunction. If it is installed at snowy area, attach the hood to the system. · Install the unit at the higher installation console by 500 mm than the average snowfall (annual average snowfall) if it is installed at the area with much snowfall. · Where snow accumulated on the upper part of the unit by more than 100 mm, always remove snow for operation. – The height of H frame must be more than 2 times the snowfall and its width shall not exceed
the width of the unit. (If width of the frame is wider than that of the unit, snow may accumulate.) – Don’t install the suction hole and discharge hole of the unit facing the seasonal wind.

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42 INSTALLATION

Foundation for Installation
· Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation.
· Fix the unit securely by means of the foundation bolts. (Prepare 6sets of M12 foundation bolts, nuts and washers each which are available on the market.)
· It is best to screw in the foundation bolts until their length are 20 mm from the foundation surface.
· When installing the unit on the ground, install a separate pedestal with enough height to install the drain nipple.

620

293

100 75
200 75
200 361

Spring washer

Frame

Nut

H-Beam

Anti-vibration materials
Concrete base

Six bolt are required 3 thread ridges

Foundation bolt executing method

[Unit:mm]

! WARNING
· Be sure to remove the Pallet(Wood Support) of the bottom side of the unit Base Pan before fixing the bolt. It may cause the unstable state of the unit settlement, and may cause freezing of the heat exchanger resulting in abnormal operations.
· Be sure to remove the Pallet(Wood Support) of the bottom side of the unit before welding. Not removing Pallet(Wood Support) causes hazard of fire during welding.

Pallet(Wood Support) – Remove before Installation

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INSTALLATION 43
Electrical Wiring
· Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.
! WARNING
· Be sure to have authorized electrical engineers do the electric work using special circuits in accordance with regulations and this installation manual. If power supply circuit has a lack of capacity or electric work deficiency, it may cause an electric shock or fire.
· Install the Unit transmission line away from the power source wiring so that it is not affected by electric noise from the power source. (Do not run it through the same conduit.)
· Be sure to provide designated grounding work to Unit.
! CAUTION
· Be sure to correct the unit to earth. Do not connect earth line to any gas pipe, liquid pipe, lightening rod or telephone earth line. If earth is incomplete, it may cause an electric shock.
· Give some allowance to wiring for electrical part box of Units, because the box is sometimes removed at the time of service work.
· Never connect the main power source to terminal block of transmission line. If connected, electrical parts will be burnt out.
· Only the transmission line specified should be connected to the terminal block for Unit transmission.
! CAUTION
· This product have reversed phase protection detector that only works when the power is turned on. If there exists black out or the power goes on and off which the product is operating, attach a reversed phase protection circuit locally. running the product in reversed phase may break the compressor and other parts.
· Use the 2-core shield cables for communication lines. Never use them together with power lines.
· The conductive shielding layer of cable should be grounded to the metal part of both units. · Never use multi-core cable · As this unit is equipped with an inverter, to install a phase leading capacitor not only will
deteriorate power factor improvement effect, but also may cause capacitor abnormal heating. Therefore, never install a phase leading capacitor. · Make sure that the power unbalance ratio is not greater than 2 %. If it is greater, the unit’s lifespan will be reduced. · Introducing with a missing N-phase or with a mistaken N-phase will break the equipment

44 INSTALLATION

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! CAUTION
The power cable connected to the unit should be complied with IEC 60245 or HD 22.4 S4 (This equipment shall be provided with a cable set complying with the national regulation. Pipes and wires should be purchased separately for installation of the product.)
Select a circuit breaker and power cable suitable for the current specification.

Factory Model Name ZHBW056A0 ZHBW076A0 ZHBW096A0 ZHBW096S0 ZHBW126A0 ZHBW146A0 ZHBW166A0 ZHBW128A0 ZHBW148A0 ZHBW168A0 ZHBW056A1 ZHBW076A1 ZHBW096A1 ZHBW126A1 ZHBW146A1 ZHBW166A1 ZHBW128A1 ZHBW148A1 ZHBW168A1

Buyer Model Name HM051M U43 HM071M U43 HM091M U43
HM091MRS U33 HM121M U33 HM141M U33 HM161M U33 HM123M U33 HM143M U33 HM163M U33 HM051MR U44 HM071MR U44 HM091MR U44 HM121MR U34 HM141MR U34 HM161MR U34 HM123MR U34 HM143MR U34 HM163MR U34

Phase[Ø] 1 1 3 1 1 3

Capacity [kW] 5 7 9 9 12 14 16 12 14 16 5 7 9 12 14 16 12 14 16

ELCB 16 A 20 A 25 A 16 A 40 A 40 A 40 A 16 A 16 A 16 A 16 A 20 A 25 A 40 A 40 A 40 A 16 A 16 A 16 A

Power cable (Type : H07RNF)

Current [A] Area [mm2] [A] 0.2 Tinsel cord a

0.2< [A] 3

0.5 a

3< [A] 6

0.75

6< [A] 10 1.0 (0.75)b

10< [A] 16 1.5 (1.0)b

16< [A] 25

2.5

25< [A] 32

4

32< [A] 40

6

40< [A] 63

10

a These cords may only be used if their length does not exceed 2 m between the point where the cord or cord guard enters the appliance and the entry to the plug.
b Cords having the cross-sectional areas indicated in the parentheses may be used for portable appliances if their length does not exceed 2 m.

10±3 mm 35±5 mm

10±3 mm 35±5 mm

GN/YL 20 mm
For the 1-Phase

GN/YL 20 mm
For the 3-Phase

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INSTALLATION 45

Precautions when laying power wiring
Use round pressure terminals for connections to the power terminal block.

Round pressure terminal

Power wire

When none are available, follow the instructions below. – Do not connect wiring of different thicknesses to the power terminal block. (Slack in the power
wiring may cause abnormal heat.) – When connecting wiring which is the same thickness, do as shown in the figure below.

Connect same thickness wiring to both sides.

It is forbidden to connect two to one side.

It is forbidden to connect wiring of different thicknesses.

– For wiring, use the designated power wire and connect firmly, then secure to prevent outside pressure being exerted on the terminal block.
– Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will strip the head and make proper tightening impossible.
– Over-tightening the terminal screws may break them.
! WARNING
· Make sure that the screws of the terminal are free from looseness.

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46 INSTALLATION
Point for attention regarding quality of the public electric power supply (For 3 Series)
– European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current 75 A.
– European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current 16 A of > 75 A per phase.
For 1 Phase (12, 14, 16 kW)
– This equipment complies with IEC (EN) 61000-3-12 in harmonic currents emission limits corresponding Rsce = 33.
– This equipment complies with reference impedance for IEC (EN) 61000-3-3.
For 3 Phase (12, 14, 16 kW)
– This equipment complies with IEC (EN) 61000-3-12 provided that the short- circuit power Ssc is greater than or equal to 2067 kVA at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to 2067 kVA.
– This equipment complies with IEC (EN) 61000-3-3.
For 1 Phase (5,7, 9 kW)
– This equipment complies with IEC (EN) 61000-3-12 in harmonic currents emission limits corresponding Rsce = 33.
– This equipment complies with IEC (EN) 61000-3-3.

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INSTALLATION 47
Point for attention regarding quality of the public electric power supply (For 4 Series)
– European/International Technical Standard setting the limits for voltage changes, voltage fluctuations and flicker in public low-voltage supply systems for equipment with rated current 75 A.
– European/International Technical Standard setting the limits for harmonic currents produced by equipment connected to public low-voltage systems with input current 16 A of > 75 A per phase.
For 1 Phase (12, 14, 16 kW)
– This equipment complies with IEC (EN) 61000-3-12 in harmonic currents emission limits corresponding Rsce = 33.
– This equipment complies with reference impedance for IEC (EN) 61000-3-11.
For 3 Phase (12, 14, 16 kW)
– This equipment complies with IEC (EN) 61000-3-12 provided that the short- circuit power Ssc is greater than or equal to 2672 kVA at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc greater than or equal to 2672 kVA.
– This equipment complies with IEC (EN) 61000-3-3.
For 1 Phase (5,7 kW)
– This equipment complies with IEC (EN) 61000-3-2. – This equipment complies with IEC (EN) 61000-3-3.
For 1 Phase (9 kW)
– This equipment complies with IEC (EN) 61000-3-12 in harmonic currents emission limits corresponding Rsce = 33.
– This equipment complies with IEC (EN) 61000-3-3.

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48 INSTALLATION
Circuit Breaker Specification
Perform the electrical wiring work according to the electrical wiring connection. · All wiring must comply with local requirements. · Select a power source that is capable of supplying the current required by the appliance. · Use a recognized ELCB(Electric Leakage Circuit Breaker) between the power source and the
unit. A disconnection device to adequately disconnect all supply lines must be fitted. · Model of circuit breaker recommended by authorized personnel Only. · Select a circuit breaker suitable for the current specification.

Unit

Backup

Live Signal for Backup Heater

Heater

(A+B)

CB

Live Signal for DHW Tank kit

CB ELCB

Switch Box

DHW Tank
CB DHW Tank kit
Power source Sensor Signal

CB : Circuit Breaker ELCB : Electric Leakage Circuit Breaker

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INSTALLATION 49
Wiring procedure for power cable
This cable is generally connected between external power source (such as main electric power distribution panel of user’s house) and the unit. Before starting wiring, check if wire specification is suitable and read following directions and cautions VERY carefully.
! CAUTION
After checking and confirming following conditions, start wiring work. · Secure dedicated power source for the Air-to-Water heat pump. The wiring diagram
(attached inside the control box of the unit) is presenting related information. · Provide a circuit breaker switch between power source and the outdoor unit. · Although it is very rare case, sometimes the screws used to fasten internal wires can be
loosen due to the vibration while product transportation. Check these screws and make it sure if they are all fastened tightly. If not tightened, burn-out of the wire can be occurred. · Check the specification of power source such as phase, voltage, frequency, etc. · Confirm that electrical capacity is sufficient. · Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate. · Confirm that the cable thickness is as specified in the power sources specification. (Particularly note the relation between cable length and thickness.) · Provide an ELB(electric leakage breaker) when the installation place is wet or moist. · The following troubles would be caused by abnormal voltage supply such as sudden voltage increasing or voltage drop-down. – Chattering of a magnetic switch (frequent on and off operation) – Physical damage of parts where magnetic switch is contacted – Break of fuse – Malfunction of overload protection parts or related control algorithms. – Failure of compressor start up – Ground wire to ground outdoor unit to prevent electrical shock.
Step 1. Disassemble side panel and front panel from the unit by loosing screws.
UN36A (5, 7, 9 kW)

UN60A(1Ø : 9, 12, 14, 16 kW)

UN60A (3Ø : 12, 14, 16 kW)

• The feature may be vary according to the type of model.

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50 INSTALLATION
Step 2. Connect power cable to main power terminal See below figure for detailed information. When connecting earth cable, the diameter of cable should be refer to the below table. The earth cable is connected to the Control box case where earth symbol is marked.
Step 3. Use cable clamps (or cord clamps) to prevent unintended move of power cable. Step 4. Reassemble the side panel to the unit by fastening screws.

CODE CLAMP

UNIT POWER
UN36A (5, 7, 9 kW)
CODE CLAMP

CODE CLAMP

UNIT POWER
UN60A(1Ø : 9, 12, 14, 16 kW)

UNIT POWER
UN60A (3Ø : 12, 14, 16 kW)

Failure to do these instruction can result in fire, electric shock or death. · Make sure the power cable do not touch to copper tube. · Make sure to fix [cord clamp] firmly to sustain the connection of terminal. · Make sure to connect unit power & heater power separately.

• The feature may be vary according to the type of model.

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INSTALLATION 51

Terminal Block Information
– For 3 Series Symbols used below pictures are as follows : – L, L1, L2 : Live (220-240 V~) – N : Neutral (220-240 V~) – BR : Brown, WH : White, BL : Blue, BK : Black

Case 1
Terminal Block 1
Energizing water pump for solar thermal system

1

2

3

L1 L2 N

MIXING VALVE

45 LN
MIX PUMP

67
LN
WATER PUMP
(B)

8 9 10 L L1 N
3WAY VALVE (B)

Power supply for 2nd heating kit

Water flow switching between using solar thermal heating and skipping solar thermal heating

Opening or closing water flow for FCU cooling

11 12 13
L L1 N
3WAY VALVE (B)

14 15 16 L L1 N
2WAY VALVE (A)

17 18 19 20 L N L1 L2
THERMOSTAT (Default : 230 V AC)

Water flow switching between under floor heating and DHW tank heating

Connection for thermostat (230 V AC)
Supporting type : Heating only or Heating/Cooling

Case 2
Terminal Block 1
Energizing water pump for solar thermal system

Water flow switching between under floor heating and DHW tank heating

1

2

3

L L1 N

3WAY VALVE (B)

45
LN
WATER PUMP
(B)

67
LN
WATER TANK HEATER

8 9 10 L L1 N
3WAY VALVE (A)

Water flow switching between using Turn on or off DHW

solar thermal heating and skipping

tank heater

solar thermal heating

Terminal Block 2
Power supply for 2nd heating kit

11 12 13 14

ABL N

3rd PARTY CONTROLLER

MIX PUMP

15 16 17 18 19 20 L1 L2 N L L1 N
MIXING VALVE 2WAY VALVE(A)

Connection for 3rd PARTY CONTROLLER

Opening or closing water flow for FCU cooling

Terminal Block 2 Terminal Block 3

21

22

L1

L2

WATER TANK HEATER

Turn on or off DHW tank heater

Turn on or off backup heater

23 24 LN
HEATER (B)

25 26 27 28 LNAB
HEATER 3rd PARTY (A) CONTROLLER

Connection for 3rd PARTY CONTROLLER

Terminal Block 4

Terminal Block 3

Connection for thermostat (230 V AC)
Supporting type : Heating only or Heating/Cooling

21 22 23 24 25 26 27 28 29 30

L N L N L N L1 L2

HEATER (A)

HEATER (B)

THERMOSTAT (Default : 230 V AC)

Turn on or off backup heater
Terminal Block 4

29

30

L1

L2

E/HEATER OUT SENSOR (5 V DC)

Connection for E/HEATER OUT SENSOR

31

32

L1

L2

E/HEATER OUT SENSOR (5 V DC)

Connection for E/HEATER OUT SENSOR

Terminal Terminal Block 1 Block 2

Terminal Terminal Block 3 Block 4
(Accessory)

Terminal Block 4

Terminal Terminal Terminal Block 1 Block 3 Block 2

(Accessory)

C Refer to Terminal Block Information according to the C/Box shape.

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52 INSTALLATION
– For 4 Series Symbols used below pictures are as follows : – L, L1, L2 : Live (220-240 V~) – N : Neutral (220-240 V~) – BR : Brown, WH : White, BL : Blue, BK : Black

Terminal Block 1

1

23

L L1 N

MIXING VALVE

45 6 L L1 N
2WAY VALVE (A)

7

89

L L1 N

3WAY VALVE (A)

Power supply for 2nd heating kit

Water flow switching between using solar thermal heating and skipping solar thermal heating

Energizing water pump for solar thermal system

10 11 12 13 14 L L1 N L N

3WAY VALVE WATER TANK

(B)

HEATER

15 16 LN
WATER PUMP(B)

17 18 LN
MIX PUMP

19 20 LN
WATER PUMP(C)

Water flow switching between under floor heating and DHW tank heating

Power supply for 2nd heating kit

Terminal Block 2 Terminal Block 3

21 22 23 24 25 26 27

L

N L1 L2 L3 A B

THERMOSTAT (Default : 230 V AC)

3rd PARTY CONTROLLER
(5V DC)

Connection for thermostat (230 V AC)
Supporting type : Heating only or Heating/Cooling

Connection for 3rd PARTY CONTROLLER

Terminal Block 1

Terminal Terminal Terminal Block 2 Block 3 Block 4
(Accessory)

Terminal Block 4

28

29

L1

L2

E/HEATER OUT SENSOR (5 V DC)

Connection for E/HEATER OUT SENSOR

C Refer to Terminal Block Information according to the C/Box shape.

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INSTALLATION 53
Wiring of main power supply and equipment capacity
1. Use a separate unit power and heater power. 2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when
proceeding with the wiring and connections. 3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1
rank thicker taking into account the line voltage drops. Make sure the power- supply voltage does not drop more than 10 %. 4. Specific wiring requirements should adhere to the wiring regulations of the region. 5. Power supply cords of parts of appliances for unit use should not be lighter than polychloroprene sheathed flexible cord. 6. Don’t install an individual switch or electrical outlet to disconnect each of unit separately from the power supply.
! WARNING
· Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company.
· Make sure to use specified wires for connections so that no external force is imparted to terminal connections. If connections are not fixed firmly, it may cause heating or fire.
· Make sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
! CAUTION
· Some installation site may require attachment of an earth leakage breaker. If no earth leakage breaker is installed, it may cause an electric shock.
· Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire.

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54 INSTALLATION
Water Piping and Water Circuit Connection
! CAUTION
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.
Definition of terms are as follow : · Water piping : Installing pipes where water is flowing inside the pipe. · Water circuit connecting : Making connection between the unit and water pipes or between
pipes and pipes. Connecting valves or elbows are, for example, in this category.
Configuration of water circuit is shown in “Installation Scenes”. All connections should be complied with presented diagram.
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 unit will be discharged to drain hose. · 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. · While supplying water, pressure of supplying water should be 2.0 bar approximately. · Pipe is insulated to prevent heat loss to external environment and to prevent dew generation on the surface of the pipe in cooling operation. · Maximum allowable Torque at the water piping connection is 50 N·m

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INSTALLATION 55
When the water pipes are connected. It must be tightened the nut with two wrench. Otherwise pipes can be deformed.
Water Out
Union Water In

• The feature may be vary according to the type of model.
  ! WARNING
  Installing shut-off valve · While assembling two shut-off valves, 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 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.
  Water 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. To prevent pipe breakage by freeze at winter season, Must be insulation at exterior water pipe between product and building.

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56 INSTALLATION
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 unit, but also in the under floor water circuit, DHW 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.
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. – Open both the air vent in the water pipe and the air vent in the pump.
Step 4. Stop water supplying when the pressure gage 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 Next process(Pipe Insulation). Otherwise, go to step 3. – Pressure gage 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.
! CAUTION
Keep the air vent of the water pipe open and keep the air vent of the pump closed. Otherwise, the pump may make noise.
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

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INSTALLATION 57
Water pump Capacity
The water pump us 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 Maximum.
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] 16 14 12 9 7 5

Rated flow-rate [LPM(m3/h)]

Pump Head [m] (At rated flow rate)

Product pressure

drop [m] Serviceable Head

(Plate heat

[m]

exchanger)

46.0 (2.8)

9.0

1.4

7.6

40.25 (2.4)

9.3

1.1

8.2

34.5 (2.1)

9.8

0.8

9.0

25.87 (1.5)

6.1

0.4

5.7

20.12 (1.2)

7.3

0.3

7.0

14.37 (0.9)

7.5

0.2

7.3

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58 INSTALLATION
Performance curve
MGQ62321901 : UPML GEO 20 – 105 CHBL UN60A (12, 14, 16 kW)
MGQ62321902 : UPM3K GEO 20 – 75 CHBL UN36A (5, 7, 9 kW), UN60A (9 kW)
Performance test based on standard ISO 9906 with pre-pressure 2.0 bar and liquid temperature 20 °C.
! WARNING
· Selecting a water flowrate outside the curves can cause damage to or malfunction of the unit.

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INSTALLATION 59
Water Quality
Water quality should be complied with EN 98/83 EC Directives. Detailed water quality condition can be found in EN 98/83 EC Directives.
! CAUTION
· If the product is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to remove sludge and scale.
· Installing sludge strainer in the water loop is very important to prevent performance degrade.
· Chemical treatment to prevent rust should be performed by installer. · It is strongly recommended to install an additional filter on the heating water circuit.
Especially to remove metallic particles from the heating piping, it is advised to use a magnetic or cyclone filter, which can remove small particles. Small particles may damage the unit and will NOT be removed by the standard filter of the heat pump system.

Frost protection by antifreeze
In areas of the country where entering water temperatures drop below 0 °C, the water pipe must be protected by using an approved antifreeze solution. Consult your AWHP unit supplier for locally approved solutions in your area. Calculate the approximate volume of water in the system. (Except the AWHP unit.) And add six liters to this total volume to allow for the water contained in AWHP unit.

Antifreeze type
Ethylene glycol Propylene glycol
Methanol

Antifreeze mixing ratio

0 °C

-5 °C

-10 °C -15 °C -20 °C -25 °C

0 %

12 %

20 %

30 %

–

–

0 %

17 %

25 %

33 %

–

–

0 %

6 %

12 %

16 %

24 %

30 %

If you use frost protection function, change DIP switch setting and input the temperature condition in Installation mode of remote controller. Refer to CONFIGURATION > DIP Switch Setting > DIP Switch Information > Option Switch 3 and INSTALLER SETTING > Antifreezing Temperature.

! CAUTION
· Use only one of the above antifreeze. · If a antifreeze is used, pressure drop and capability degradation of the system can be
occurred. · If one of antifreezes is used, corrosion can be occurred. So please add corrosion inhibitor. · Please check the concentration of the antifreeze periodically to keep same concentration. · When the antifreeze is used (for installation or operation), take care to ensure that
antifreeze must not be touched. · Ensure to respect all laws and norms of your country about Anti-freeze usage.

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60 INSTALLATION
Frost protection by antifreeze valve
About antifreeze valve This is a valve to prevent freeze in winter. When no antifreeze is added to the water, you can use antifreeze valves at all lowest points of the field piping to drain the water from the system before it can freeze
To install antifreeze valve To protect the field piping against freezing, install the following parts:
Outdoor Indoor
a C
b C

b

a Automatic air intake b Antifreeze valve (Optional ­ field supply) c Normally closed valves (recommended ­ field supply)

Part

Description

An automatic air intake (for air supply) should be installed at the highest point.

a

For example, an automatic air purge.

Protection for the field piping. The antifreeze valve must be installed:

· Vertically to allow water to flow out properly and free from obstructions.

b

· At all lowest points of the field piping.

· In the coldest part and away from heat sources.

Isolation of water inside the house when there is a power interruption.

Normally closed valves (located indoors near the piping entry/exit points) can

prevent that all water from indoor piping is drained when the antifreeze valve

open.

s

· When there is a power interruption: The normally closed valves close and

c

isolate the water inside the house. If the antifreeze valve open, only the

water outside the house is drained.

· In other circumstances (example: when there is a pump failure): The normally closed valves remain open. If the antifreeze valve open, the water from inside the house is also drained.

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INSTALLATION 61

NOTE
· Do not make any trap connections. If the shape of the connection pipe has the potential to create a trap effect, part of the pipe will not be able to drain and frost protection will no longer be guaranteed.
· Leave at least 15 cm clearance from the ground to prevent ice from blocking the water exit.
· Keep a distance of at least 10 cm between the antifreeze valves.
· The valve must be free of insulation for the system to work properly.
· When antifreeze valves are installed, do NOT select a minimum cooling setpoint lower than 7 °C. If lower, antifreeze valves can open during cooling operation.
· When installed outdoors, the antifreeze valve must be protected from rain, snow and direct sunlight.

Outdoor Indoor

10 cm

b b

15 cm

62 INSTALLATION

ENGLISH

Water Volume and Expansion Vessel Pressure
Inside expansion vessel is included which is 8 liter capacity with 1 bar pre- pressure. That means, according to the volume-pressure graph, total water volume of 230 liter is supported as default. If total water volume is changed because of installation condition, the pre-pressure should be adjusted to secure proper operation.
– Minimum total water volume is 20 liter. – Pre-pressure is adjusted by the total water volume. If the indoor is located at the highest
position of the water circuit, adjustment is not required. – To adjust pre- pressure, use nitrogen gas by certificated installer.
2.4

Pre-pressure in Expansion vessel (bar)

2.1

1.7

1.4

1.0

0.7

0.3

20

60

100 140

180 220 260 300 340

Maximum total water volume (liter)

Adjusting pre-pressure of expansion vessel is as following :
Step 1. Refer “Volume-Height” table. If installation scene is belong to Case A, go to Step 2. Otherwise, if it is Case B, do nothing. (pre-pressure adjustment is not required.) Otherwise, if it is Case C, go to Step 3.
Step 2. Adjust pre-pressure by following equation. Pre-pressure [bar] = (0.1 x H + 0.3) [bar] where H : difference between unit and the highest water pipe 0.3 : minimum water pressure to secure product operation
Step 3. Volume of expansion vessel is less than installation scene. Please install additional expansion vessel at the external water circuit.

Volume-Height Table

H < 7 m H7m

V < 230 liter V 230 liter

Case B

Case A

Case A

Case C

H : difference between unit and the highest water pipe V : total water volume of installation scene

ACCESSORIES INSTALLATION 63

ENGLISH

ACCESSORIES INSTALLATION

can interface to various accessories to extend its functionality and to improve user

convenience. In this chapter, specifications about supported 3rd party accessories and how to

connect to

is introduced.

It is noted that this chapter only deal with 3rd party accessories. For accessories supported by LG Electronics, please refer to installation manual of each accessories.

Accessories supported by LG Electronics

Item DHW Tank Install Kit Thermistor for DHW Tank Remote Temperature Sensor Dry Contact
Solar thermal Kit Meter Interface
Central Controller
Backup heater
Wi-Fi Modem Thermistor for 2nd Circuit Extension wire
PI485
ESS

Purpose
To operate with DHW tank
To control hot water temperature of DHW tank

PHLTB

Model

PHRSTA0

To control by air temperature

PQRSTA0

To receive on & off external signal Dry Contact For Thermostat

PDRYCB000 PDRYCB300

To operate with solar heating system

PHLLA(Limit temperature : 96 °C)

To measure production / consumption power

PENKTH000

Multiple installed products into one central control

AC EZ Touch (PACEZA000) AC Smart IV (PACS4B000) AC Smart 5 (PACS5A000) ACP 5 (PACP5A000) AC Manager 5 (PACM5A000)

To supplement insufficient capacity

HA031M E1 / HA061M E1 / HA063M E1

To enable remote system operation from smartphone

PWFMDD200

To interlock with 2nd circuit operation and control temperature of main zone.

PRSTAT5K10

To connect remote controller with Indoor PCB for communication

PZCWRC1

To communicate and control through For 3 Series: PMNFP14A1

the central controller

For 4 Series: PP485A00T

To control the operation mode according to the energy storage state

HOME 8 (PCS) : D008KE1N211 HOME10(PCS) : D010KE1N211 HB7H(Battery) : BLGRESU7H HB10H(Battery) : BLGRESU10H

64 ACCESSORIES INSTALLATION

ENGLISH

Item

Purpose

Model

DHW Tank

To generate and store hot water

OSHW-200F : 200 L, Single Heating Coil, 1Ø 230 V 50 Hz 2.4 kW Booster heater OSHW-300F : 300 L, Single Heating Coil, 1Ø 230 V 50 Hz 2.4 kW Booster heater OSHW-500F : 500 L, Single Heating Coil, 1Ø 230 V 50 Hz 2.4 kW Booster heater OSHW-300F : 300 L, Double Heating Coil, 1Ø 230 V 50 Hz 2.4 kW Booster heater

Cloud Gateway To use Becon cloud

PWFMDB200

Wi-Fi Modem

To enable remote system operation from smartphone

PWFMDD200

Extension cable for Wi-Fi Modem

To connect with Wi-Fi modem to the USB cable

PWYREW000

Thermistor for 2nd Circuit or E/Heater

To interlock with 2nd circuit

operation and control temperature

of main zone or To interlock with 3rd party E/Heater and control

PRSTAT5K10

temperature of water out 3rd

party E/Heater.

RS3 remote controller

To control unit with 2 remote controllers

PREMTW101

2-Remo Control Wire

The wire for 2 remo control

PZCWRC2

ACCESSORIES INSTALLATION 65

ENGLISH

Accessories supported by 3rd party Companies

Item Solar Heating System

Purpose
To generate auxiliary heating energy for water tank

Specification
· Solar collector · 3way valve(B)

Mix Kit 3rd Party Boiler 3rd Party Controller

To use 2nd Circuit
To use auxiliary boiler. To connect external controller using modbus protocol

· Mixing valve · Mix pump

Thermostat

To control by air temperature

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

3way valve and actuator

(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

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

To control water flow for Fan Coil 2way valve and actuator Unit / To serve as 3way valve when
installing backup heater

2 wire, SPST (Single Pole Sing Throw) type, 230 V AC

External Pump

To retain sufficient capacity using additional pump

Smart Grid

To control operation mode depending on input signal from provider

3rd Party ESS

To control the operation mode according to the energy storage state

(For 4 Series)

3rd party Backup heater To supplement in sufficient capacity (For 4 Series)

Antifreeze valve

To protect the pipes against freezing

DHW Recirculation Pump

To control the water flow of DHW recirculation pump

(For 4 Series)

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66 ACCESSORIES INSTALLATION
Before Installation
! WARNING
Followings should be kept before installation · Main power must be turned off during installing 3rd party accessories. · 3rd party accessories should be comply with supported specification. · Proper tools should be chosen for installation. · Never do installation with wet hands.
Thermostat
Thermostat is generally used to control the product by air temperature. When thermostat is connected to the product, the product operation is controlled by the thermostat.
Installation condition
! CAUTION
· USE 220-240 V~ Thermostat · Some electro-mechanical type thermostat has internal delay time to protect compressor. In
that case, mode change can takes time more than user’s expectation. Please read thermostat manual carefully if the unit does not response quickly. · Setting temperature range by thermostat can be different with that of the unit. The heating or cooling set temperature should be chosen within the setting temperature range of the unit. · It is highly recommended that the thermostat should be installed where space heating is mainly applied.
Following location should be avoid to secure proper operation : · Height from floor is approximately 1.5 m. · Thermostat can not be located where the area may be hidden when door is open. · Thermostat can not be located where external thermal influence may be applied. (such as
above heating radiator or open window)
Direct Sun ray contact area
yes
no
no
1.5 m
no

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ACCESSORIES INSTALLATION 67

General Information
The Heat Pump supports following thermostats.

Type Mechanical
(1)
Electrical (2)

Power 230 V~
230 V~

Operating Mode Heating Only (3) Heating / Cooling (4) Heating / Cooling / DHW Heating (5) Heating Only (3) Heating / Cooling (4) Heating / Cooling / DHW Heating (5)

Supported Yes Yes Yes Yes Yes Yes

(1) There is no electric circuit inside the thermostat and electric power supply to the thermostat is not required.
(2) Electric circuit such as display, LED, buzzer, etc is included in the thermostat and electric power supply is required.
(3) Thermostat generates “Heating ON or Heating OFF” signal according to user”s heating target temperature.
(4) Thermostat generates both “Heating ON or Heating OFF” and “Cooling ON or Cooling OFF” signal according to user”s heating and cooling target temperature.
(5) Thermostat generates “Heating ON or Heating OFF”, “Cooling ON or Cooling OFF”, “DHW Heating ON or DHW Heating OFF” signal according to user’s heating, cooling and DHW heating target temperature. (For Split Indoor unit 5 Series, For Hydrosplit)
! CAUTION
Choosing heating / cooling thermostat · Heating / cooling thermostat must have “Mode Selection” feature to distinguish operation
mode. · Heating / cooling thermostat must be able to assign heating target temperature and
cooling target temperature differently. · If above conditions are not kept, the unit can not operation properly. · Heating / cooling thermostat must send cooling or heating signal immediately when
temperature condition is satisfied. No delay time while sending cooling or heating signal is permitted.

68 ACCESSORIES INSTALLATION

ENGLISH

How to wire thermostat
Follow below procedures Step 1 ~ Step 5. Step 1. Uncover front cover of the unit and open the control box. Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3. Step 3. If it is Heating only thermostat, go to step 4. Otherwise, if it is Heating / cooling
thermostat, go to step 5. Step 4. Find terminal block and connect wire as below.

27 28 29 30

L

N L1 L2

THERMOSTAT (Default : 230 V AC)

(L)

(N)

(H)

Thermostat

! WARNING
Mechanical type thermostat Do not connect wire (N) as mechanical type thermostat does not require electric power supply.
! CAUTION
Do not connect external electric loads. Wire (L) and (N) should be used only for operation electric type thermostat. Never connect external electric loads such as valves, fan coil units, etc. If connected, Main PCB (Heater) can be seriously damaged.

(L) : Live signal from PCB to thermostat (N) : Neutral signal from PCB to thermostat (H) : Heating signal from thermostat to PCB
C The terminal block connection number may differ depending on the model. Refer to the “Wiring Diagram” in the SVC Manual.

Step 5. Find terminal block and connect wire as below.

27 28 29 30 L N L1 L2
THERMOSTAT (Default : 230 V AC)

! WARNING
Mechanical type thermostat Do not connect wire (N) as mechanical type thermostat does not require electric power supply.

(L) (N) (C) (H) Thermostat

! CAUTION
Do not connect external electric loads.
Wire (L) and (N) should be used only for operation Electric type thermostat.
Never connect external electric loads such as valves, fan coil units, etc. If connected, Main PCB (Heater) can be seriously damaged.

(L) : Live signal from PCB to thermostat (N) : Neutral signal from PCB to thermostat (C) : Cooling signal from thermostat to PCB (H) : Heating signal from thermostat to PCB

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ACCESSORIES INSTALLATION 69
How to wire Heating / Cooling / DHW Heating thermostat (For 4 Series)
Follow below procedures Step 1 ~ Step 3. Step 1. Uncover front cover of the unit and open the control box. Step 2. Identify the power specification of the thermostat. If it is 220-240 V~, go to Step 3. Step 3. Find terminal block and connect wire as below.
23 24 25 26 27 L N L1 L2 L3
THERMOSTAT (Default : 230 V AC) (L) (N) (C) (H) (D)
Thermostat
! WARNING
Mechanical type thermostat. Do not connect wire (N) as mechanical type thermostat does not require electric power supply.
! CAUTION
Do not connect external electric loads. Wire (L) and (N) should be used only for operation electric type thermostat. Never connect external electric loads such as valves, fan coil units, etc. If connected, Main PCB (Heater) can be seriously damaged.
(L) : Live signal from PCB to thermostat (N) : Neutral signal from PCB to thermostat (C) : Cooling signal from thermostat to PCB (H) : Heating signal from thermostat to PCB (D) : DHW Heating signal from thermostat to PCB

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70 ACCESSORIES INSTALLATION

Final check
· DIP switch setting : Set DIP switch No. 8 to ON’. Otherwise, the unit can not recognize the thermostat. · Remote Controller : –Thermostat’ text is displayed on the remote controller. – Button input is prohibited. – In case of Heating / Cooling / DHW Heating thermostat, select `Heat&Cool / DHW’ as the Thermostat Control Type in the remote controller installer settings.

2nd Circuit
The 2nd circuit is generally used to control the temperature of 2 rooms differently. To use the 2nd Circuit, you need to prepare a separate Mix Kit. The mix kit must be installed in the main zone. – Main Zone : zone where the water temperature is lowest when heating. – Add. Zone : The other zone

– For 3 Series [Install Guide 2nd Circuit Heating]

Main Zone Add. Zone
Floor (35 °C)
Convector (FCU, 45 °C)
Radiator (45 °C) Radiator (55 °C)

Floor (35 °C)

Convector (FCU, 45 °C)
X

Radiator (45 °C)
X

Radiator (55 °C)
X X

[Install Guide 2nd Circuit Cooling]

Main Zone Add. Zone
Floor (18 °C)

Floor (18 °C)

Radiator(18 °C)

Convector (FCU, 5 °C)

X

Radiator(18 °C) X

Convector (FCU, 5 °C)
X
X

C To use a floor combination during cooling operation, the flow through the floor of the flow must be blocked by the 2 way valve.

ACCESSORIES INSTALLATION 71

ENGLISH

– For 4 Series [Install Guide 2nd Circuit Heating]

Circuit 2 Circuit 1
Floor (35 °C)
Convector (FCU, 45 °C)
Radiator (45 °C) Radiator (55 °C)

Floor (35°C)

Convector (FCU, 45 °C)

Radiator (45 °C)

Radiator (55 °C)

[Install Guide 2nd Circuit Cooling]

Circuit 2 Circuit 1
Floor (18 °C) Convector (FCU, 5 °C)

Floor (18 °C)

Convector (FCU, 5 °C)

C To use a floor combination during cooling operation, the flow through the floor of the flow must be blocked by the 2 way valve.

NOTE
Circuit 1 = Direct circuit : Zone where the water temperature is lowest when heating Circuit 2 = Mixing circuit : The other zone

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72 ACCESSORIES INSTALLATION

How to Wire 2nd Circuit
– For 3 Series Follow below procedures Step 1 ~ Step 3. Step 1. Uncover front cover of the unit. Step 2. Find terminal block and connect wire as below

13 14 15 16 17 L N L1 L2 N

MIX PUMP

MIXING VALVE

(L) (N) (L1) (L2) (N1)

(L) : Live signal from PCB to mix pump
(N) : Neutral signal from PCB to mix pump
(L1) : Live signal (for Normal* Closed type) from PCB to mixing valve
(L2) : Live signal (for Normal Open type) from PCB to mixing valve
(N1) : Neutral signal from PCB to mixing valve

MIX PUMP

MIXING VALVE

*Closed = NOT Mixed

C The terminal block connection number may differ depending on the model. Refer to the “Wiring Diagram” in the SVC Manual.

Step 3. Insert the temperature sensor to ‘CN_MIX_OUT’ (Brown) of the main PCB as shown below. The sensor should be mounted correctly to outlet pipe of mix kit water pump as shown below.

CN_MIX_OUT

Indoor PCB

Buffer Tank

[Room A] Main zone (Low Temp.)

Mix

2nd circuit temp. sensor

Mix Kit

Floor heating loop Floor heating loop

[Room B] Additional zone (High Temp.)

Radiator

Radiator

ENGLISH

ACCESSORIES INSTALLATION 73

How to Wire Mix Pump, Mixing Valve and Thermistor for 2nd Circuit

– For 4 Series
Follow below procedures Step 1 ~ Step 3. Step 1. Uncover front cover of the unit. Step 2. Find terminal block and connect wire as below

7 8 9 10 11 L N L1 L2 N

MIX PUMP

MIXING VALVE

(L) (N) (L1) (L2) (N1)

MIX PUMP

MIXING VALVE

(L) : Live signal from PCB to mix pump (N) : Neutral signal from PCB to mix pump (L1) : Live signal (for Normal Closed type)
from PCB to mixing valve (L2) : Live signal (for Normal Open type)
from PCB to mixing valve (N1) : Neutral signal from PCB to mixing valve
Closed = NOT Mixed

Step3. Insert the temperature sensor to ‘CN_MIX_OUT’ (Brown) of the main PCB as shown below. The sensor should be mounted correctly to outlet pipe of mix kit water pump as shown below.

CN_MIX_OUT

Indoor PCB

[Circuit 2] Mixing Circuit

Mix

2nd circuit temp. sensor

Buffer Tank

Hydronic separator

Mix Kit

Floor

Floor

heating loop heating loop

[Circuit 1] Direct Circuit

Radiator

Radiator

NOTE
Temperature sensor specification: Type : Thermistor,NTC Resistance at 25 °C : 5 k Minimum operating temperature range : -30 °C~100 °C

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74 ACCESSORIES INSTALLATION [Thermistor for 2nd circuit]

Sensor

Sensor Holder

Sensor Connector

Follow below procedures step 1 ~ step 4.
Step 1. Install sensor connector to outlet pipe of mix kit water pump. (Welding must be performed to connect the sensor connector to the pipe. )
Step 2. Check if the power of the unit is turned off.
Step 3. Fasten the sensor connector to the sensor holder as shown in the figure below.
Step 4. Insert harness into PCB(CN_TH4) fully and fix the thermal sensor into tube connector as shown below.

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ACCESSORIES INSTALLATION 75
3rd Party Boiler
The product can be used by connecting an Auxiliary boiler. You can control the boiler automatically and manually by comparing the outside temperature and the set temperature.
How to install 3rd party boiler
Follow below procedures step 1 ~ step 3. Step 1. Check if the power of the unit is turned off. Step 2. Disassemble front panels and Distinguish terminal block in Indoor PCB. Step 3. Connect Power cable to terminal block (TB_BOILER) fully.

– For 3 Series

TB_BOILER

3rd party boiler (Voltage free)
– For 4 Series

Indoor PCB
EXT_BOILER

Indoor PCB

3rd party boiler (Voltage free)

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76 ACCESSORIES INSTALLATION

3rd Party Controller
The product can also be linked to 3rd party controller. You can connect external controllers using Modbus protocol except for LG controller. If 3rd party controller is used, LG controller is not applied to AWHP simultaneously.

How to install 3rd party controller
Follow below procedures step 1 ~ step 4.
Step 1. Check if the power of the unit is turned off. Step 2. Disassemble front panels and distinguish control box(Indoor) of
the unit. Step 3. Check if the harness(White) is inserted fully to the indoor unit
PCB (CN_COM). Step 4. Connect the 3rd party controller to terminal block 2(11/12)
completely. (including Meter interface module)

11

12

1(L) 2(N)

3rd PARTY CONTROLLER
(DC 5 V)

1(L) 2(N)

3rd PARTY CONTROOLER
or METER INTERFACE(LG)

– For 3 Series

CN_COM

– For 4 Series

Indoor PCB

CN_MODBUS

Indoor PCB

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ACCESSORIES INSTALLATION 77
Meter Interface
This product can be used by connecting the meter interface module supplied in the field. The meter interface module can communicate with the wired remote controller. The meter interface module lets you know the amount of power generated by the product.
How to install Meter Interface
[Parts of Meter interface]

Meter interface body
Follow below procedures step 1 ~ step 4. Step 1. Check if the power of the unit is turned off. Step 2. Disassemble front panels and Distinguish control box(Indoor) of the unit. Step 3. Check if the harness(White) is inserted fully to the indoor unit PCB (CN_COM). Step 4. Connect the external pump to terminal block 2(11/12).

– For 3 Series

CN_COM

11

12 11 : Black

A

B 12 : White

3rd PARTY CONTROLLER

Indoor PCB

– For 4 Series

CN_MODBUS

Meter interface

Indoor PCB

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78 ACCESSORIES INSTALLATION
Central Controller
The product can communicate and control through the central controller. The following functions can be controlled in the central control linked state (Operation/Stop, Desired temperature, Hot water operation / stop, Warm water temperature, Full lock, Etc)
How to Install Central Controller
To use central controller, you need to establish an environment for mutual communication between central controller and the THERMA V and register the corresponding devices through the functions of central controller. To use central controller, it shall be installed in the following order. Step 1. Installation environment inspection and device address setting
Before installing central controller, check the network for any interfacing devices and assign non overlapping addresses to the connected devices. Step 2. PI485 setting Install PI485 and set the DIP switch accordingly. Step 3. Connections Connect PI485 and central controller through RS-485 cable. Step 4. Access and Device Registration Log in to central controller and register device with address set. Consult a qualified engineer/ technician for the installation of central controller. If you have any installation queries, contact the LG service center or LG Electronics.
How to Installation PI485 Fix the PI485 PCB as shown in below images. For detailed installation method refer to PI485 Installation Manual
UN60A (9, 12, 14, 16 kW)

UN36A (5, 7, 9 kW)

– For detailed installation instructions, refer to the manual included in the accessories. – The shape may differ depending on the model.

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ACCESSORIES INSTALLATION 79
Remote Controller
Installation of Remote Controller
· After fixing the remote controller installation plate on the desired location, fix it firmly with the provided screws. – If the installation plate is not flat on the surface, it may result in the controller being twisted and cause a defect. – If there is a mounting box, install the remote controller installation plate using the fixings holes which suit, as in the below diagrams. – Do not leave a gap with the wall or product loose after the installation.

· The wired remote controller cable can be installed in 3 directions. Install to the suitable direction according to the installation environment.
– Installation direction: Rear entry, top side, right side
– When you install the remote controller cable at the top side and right side, remove the remote controller cable guide hole before the installation. Use a long nose pliers to remove the guide hole.
· After removing the hole, trim the cut surface neatly.

Top side guide groove
Right side guide groove

Top side guide groove

Rear cable entry

Right side guide groove

· After fixing the remote controller top side on the installation plate attached to the wall as in the following figure, press the bottom side to combine with the installation plate.
– Do not leave a gap in the top, bottom, left, and right side of the remote controller and the installation plate after combining them.
– Before combining with the installation plate, arrange the cables to avoid interference with the circuit parts.