LG THERMA V Split Guía del usuario

Comprehensive

application and

installation manual

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Installation check listConguration

System Design ApplicationsIntroduction

Comprehensive application

and installation manual

Contents

Split

Ⅰ. Introduction

1. Overview 008

2. Cycle Diag ram 009

3. Product Diagram 010

Ⅱ. System Design Application

1. System 1 014

2. System 2 015

3. System 3 017

4. System 4 019

5. System 5 024

6. System 6 027

7. System 7 030

8. System 8 033

9. System 9 035

10. System 10 037

11. System 11 039

12. System 12 044

Ⅲ. Con󽗉guration

1. Controller conguration 048

2. Dip S/W Setting 052

Ⅳ. Installation check list

1. Checklist 056

2. Test run 077

Please read this guide completely before installing

the product. Installation work must be performed in

accordance with the national wiring standards by

authorized personnel only.

Please retain this guide for future reference after

reading it thoroughly.

Installation check listConguration

System Design ApplicationsIntroduction

I. Introduction

1. Overview

2. Cycle Diagram

3. Product Diagram

Installation check listConguration

System Design ApplicationsIntroduction

Split

Installation check listConguration

System Design ApplicationsIntroduction

System capable of space cooling, heating and providing DHW AWHP stands for "Air to Water Heat

Pump" and generally refers to Therma V system.

• Split model

Ref. Pipes

[Outdoor unit]

Water Pipes

[Floor heating] [FCU] [Radiator] [Hotwater]

Water Pipes

[Indoor unit]

• Monobloc model

Ref. Pipes

[Outdoor unit]

Water Pipes

[Floor heating] [FCU] [Radiator] [Hotwater]

Water Pipes

[Indoor unit]

• Application

Ref. Pipes

[Outdoor unit]

Water Pipes

[Floor heating] [FCU] [Radiator] [Hotwater]

Water Pipes

[Indoor unit]

GAS SIDE

Service

Valve

(3 way)

EEV

Service

Valve

(3 way)

Indoor Unit

Plate Heat

Exchanger

Th2

Th3

Water. Out

Water. In

TH1

(Accessories)

TH6

TH4

Pressure

Sensor

Accumulator

Compressor

4 way

Valve

TH5

TH7

TH8

Outdoor Unit

Heat Exchanger

LIQUID SIDE

[Product : Split 3 ]

Table of sensors

Category

Symbol Meaning

PCB Connector

Remarks

Indoor

Unit

Th1 Remote air temperature

sensor

CN_ROOM

- Optional accessory (being sold

separately)

- Not shown in diagram

Th2 Inlet evaporator temperature

sensor

CN_PIPE_IN

- Meaning is expressed based on

Cooling mode.

Th3 Outlet evaporator temperature

sensor

CN_PIPE_OUT

Outdoor

Unit

Th4

Compressor-suction pipe

temperature sensor

CN_SUCTION

Th5 Compressor-discharge pipe

temperature sensor

CN_DISCHA

Th6 Condenser temperature

sensor

CN_C_PIPE

- Description is expressed based on

Cooling mode.

Th7 Outdoor air temperature

sensor

CN_AIR

Th8

Condenser middle temperature

sensor

CN_MID

EEV Electronic Expansion Valve

CN_LEV1

Main components:

Heat exchanger (Refrigerant-Water)

Water pump

Electric heater / Strainer

Safety valve / Flow switch

Expansion tank / Remote controller

Main components:

Heat exchanger (Refrigerant-Water)

Water pump

Electric heater(Option)

Strainer/ Safety valve

Flow switch/ Expansion tank

Remote controller

008 009

COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

LG Electronics

1. Overview 2. Cycle Diagram

Water components

484

13 9

14 15

484

12311684.5

63.4

36.9

46.4

76 41

847.8

289.6

No Name Remark

1 Leaving Water Pipe Male PT 1 inch

2 Entering Water Pipe Male PT 1 inch

3 Refrigerant Pipe Ø9.52mm

4 Refrigerant Pipe Ø15.88mm

5 Water Pump Max Head 9.5 / 7 / 6 m

6 Safety Valve Open at water pressure 3 bar

7 Control Box PCB and terminal blocks

8 Thermal switch Cut-off power input to electric heater at 90 °C (manual return at 55 °C)

9 Flow Switch Minimum operation range at 15 LPM.

10 Plate Heat Exchanger Heat exchange between refrigerant and water

11 Pressure Gage Indicates circulating water pressure

12 Expansion Tank Absorbing Volume change of heated water

13 Air Vent Air purging when Charging water

14 Electric Heater Please refer to the below Page ‘Model name and related information’

15 Strainer Filtering and stacking particles inside circulating water

16 Shut-off valve To drain or to block water when pipe connecting

II.

System Design

Applications

1. System 1

2. System 2

3. System 3

4. System 4

5. System 5

6. System 6

7. System 7

8. System 8

9. System 9

10. System 10

11. System 11

12. System 12

Installation check listConguration

System Design ApplicationsIntroduction

Split

010 _

COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

3. Product Diagram

Installation check listConguration

System Design ApplicationsIntroduction

System diagram

Space

heating /

cooling

DHW* Booster

heater** Remark

System 1

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X

System 2

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor

Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X

Remote

room

sensor

System 3

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

XOX

System 4

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

X O O Booster

heater

System 5

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O O X 3Way

valve

System 6

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X 2Way

valve

System diagram

Space

heating /

cooling

DHW* Booster

heater**

Remark

System 7

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X

Dry contact

System 8

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor

Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X

Thermostat

System 9

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X

Thermostatic

valve

System 10

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O X X

• Buffer tank

• External

pump

System 11

3way V/V

2Way valve

Smart ThinQ

DHW tank

DHW

Temp. sensor

IDU

Remote room sensor Thermostat

IDU

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

Controller (3rd party)

Dry contact

IDU

FCUUFH

DHW

Temp. sensor

DHW

Temp. sensor

Buffer tank

IDU

External pump

IDU

O O X

Wi-Fi module

To be

installed

separately

System 12

DHW tank

DHW

Temp. sensor

IDU

DHW tank

DHW

Temp. sensor

IDU

XOX

Solar

*DHW : Domestic hot water

**Booster Heater : Heater installed in tank

*DHW : Domestic hot water

**Booster Heater : Heater installed in tank

012 013

COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

LG Electronics

System Design Applications

Installation check listConguration

System Design ApplicationsIntroduction

• System diagram

IDU

Purpose: Ams to provide generic oor heating/cooling operations.

Capable of setting up coil-based radiant heating and cooling system thanks to its simplied

installation structure - also enables heating and cooling by installing radiator/fan coil.

• Necessary conguration and feature

Dip s/w N/A

Keep default See if 2 and 3 are off

Remote controller Use the default one attached to indoor

unit

No installation required

Additional provision not available

Leaving water temperature

Set up by the remote controller Single temperature

control Control of leaving water temperature

• Dip s/w Setting

OFF

1 23 45678

• System diagram

IDU

Remote room sensor

Purpose: Conguration for generic oor heating and cooling by utilizing indoor air temperature sensor.

Can be set up generally with radiator and oor heating coils, and product is operated based on

indoor air temperature setup.

• Necessary conguration and feature

Dip s/w N/A

Keep default Check if 2 and 3 are off

Remote controller Use the default one attached to indoor

unit No installation required

Leaving water temperature Set up by remote controller Single temperature

control Control of indoor air temperature

Air temperature sensor

Installation

Air temperature sensor is an option and needs

to be purchased and installed separately.

P/n : PQRSTA0

Installer setting

Remote controller needs to be set up separately.

• Dip s/w Setting

OFF

1 23 45678

014 015

COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

LG Electronics

1. System 1 2. System 2

Installation check listConguration

System Design ApplicationsIntroduction

• Installing remote temperature sensor

Remote temperature sensor can be installed any place a user wants to detect the temperature

Distance between the indoor unit and the remote air temperature sensor should be less than 15 m

due to length of the connection cable of remote air temperature sensor.

Connect the wire between CN_Room in PCB and remote room sensor

CN_ROOM

[Remote room sensor]

Press ‘up’ for 3 sec

• Installer setting

CN_ROOM

[Remote room sensor]

Press ‘up’ for 3 sec

Enter installer setup mode, then Set

Remote sensor active “Use” Set Temp.

sensor selection “Air” .

• System diagram

DHW tank

DHW

Temp. sensor

IDU

Purpose: Conguration for DHW exclusive operation. System is set up by connecting piping to heat

exchanger installed in DHW tank.

• Necessary conguration and feature

Dip s/w Separate setup is required Dip s/w No. 3: On

Remote controller

Use the default one attached to indoor unit

No installation required

Leaving water temperature DHW temperature is set by remote

controller Single temperature

control Control of DHW temperature sensor DHW temperature can be set after

initiating heating operation

DHW temperature sensor

Installation

Temperature sensor that came with DHW

tank needs to be installed.

Booster heater If not applied, and tank kit is not used

• Dip s/w Setting

OFF

1 23 45678

016 017

COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

LG Electronics

3. System 3

Installation check listConguration

System Design ApplicationsIntroduction

• Installing DHW temperature sensor

Length of DHW temperature sensor: 10 m (Provided as default)

Connect DHW temperature sensor to PCB CN-TH4 and insert sensor in the temperature sensor pocket

in tank.

Press ‘up’ for 3 sec

• Installer setting

For DHW operation

Select on installer setup whether to use booster heater alone or both backup heater and booster

heater.

Press ‘up’ for 3 sec

• System diagram

DHW tank

DHW

Temp. sensor

IDU

Purpose: Conguration for DHW exclusive operation. Control separately the heater installed the tank

where DHW operation load is great or uctuation of conditions is drastic.

Booster heater must be installed if DHW operation requires sterilization.

• Necessary conguration and feature

Dip s/w Separate setup is required Dip s/w No. 3: On

Remote controller Use the default one attached to indoor

unit No installation required

Leaving water temperature Set up by remote controller Single temperature

control Control of DHW temperature sensor DHW temperature can be set after

initiating heating operation

DHW temperature sensor

Installation

Temperature sensor that came with DHW

tank needs to be installed.

Booster heater If applied, and tank kit is not used

Separate option

• Dip s/w Setting

OFF

1 23 45678

Enter installer setup mode, then

Complete Heater priority conguration.

018 019

COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL

LG Electronics

4. System 4

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