Perfect solution for large Perfect solution for large and high rise buildingsand high rise buildings

was developed to focus large buildings and high rise buildings.

is technically advanced with maximized cooling load, high efficiency and very economical system.

Large capacity models(20HP~40HP)Longest pipe length is 120mTotal maximum pipe length is 220m

Development Plan – Outdoor unit (R22, 50/60Hz)

Capa.(HP)Combination Unit

5~16

C/O Sub

Main

8~12

No. of O/door unit

H/P

Capacity(HP)

5~16Main

Sub 8~12

○

1

8

○

1

○

○

2

16

○

○

2

3

30

○○○

3

○○○

2

20

○

○

2

○

○

2

24

○

○

2

○

○

1

10

○

1

○

1

14

○

1

○

No. of O/door unit

○○○

3

32

○○○

3

3

34

○○○

3

○○○

○

1

5

○

1

1

6

○

1

○

1

12

○

1

○

2

18

○

○

2

○

○

2

22

○

○

2

○

○

2

26

○

○

2

○

○

2

28

○

○

2

○

○

○○○

3

36

○○○

3

3

38

○○○

3

○○○

3

40

○○○

3

○○○

Development Plan – Indoor unit (R22, 50/60Hz) 7k 9k 12k 18k 21K 24k 28k 36k 38k 42k 48k

2.1 kW 2.6 kW 3.5 kW 5.3 kW 6.2kW 7.0 kW 8.2 kW 10.6 kW 11.1 kW 12.3 kW 14.1 kW

SR SR SR ST

SU SU SU

SP SP

SV SV

TC TC TC

TE TE TD TD TD TD TD TD TD

BH BH BH BG BG BG BG BE

BT BT BT

CD CD

1군 '04.04.152군 '04.07.313군 '04.09.30

HighStatic

Low Static

Exposed

Art Cool

Art CoolWide

1 Way

4 Way

Type Image

General

Mirror

Under-ceiling

Inverter scroll compressor is totally designed and developed by LG

*Multi power system : Consist of 1 inverter compressor and other constant speed compressors.

Widest line up(8HP~40Hp)

Single pipe system (1 pair of pipe from outdoor unit)

More powerful and dynamic multi power system*

High efficiency & Low noise inverter scroll compressor

Low efficiency(non-linear)

Variable capacity output by “Bypass system”

Indoor cooling/heating load(%)

Sys

tem

C

apa

city

(%)

Highly efficient Linear control

Sys

tem

C

apa

city

(%)

Indoor cooling/heating load(%)

Const. SpeedComp.1

Const. SpeedComp.2

Const. SpeedComp.3

Const. SpeedComp.1

Const. SpeedComp.1

Const. SpeedComp.2

High efficiency(Linear)

Low efficiency at low load conditions

Small steps load variation is difficult to control

For over load conditions (100%↑), additional compressor is required. So power consumption increases 4~6kW. In heating mode, additional heater required(4~6kW)

High efficiency at low load conditions

Small steps load variation by precise linear control of inverter compressor

All load conditions control by variable frequency(30Hz~120Hz). Thus minimizing number of compressors required.

Variable capacity “Bypass system”

Multi V plus

Compared to competitors our products have high COP and EER.

High Energy Saving Levels -15 ℃Model

By Pass Daikin

Cooling

HeatingCapacity

PowerConsup-tion

COP Cooling

Heating

Item Unit

Standard

-10 ℃Model

Standard

Cooling

Heating

Conventional

Sleeve size Sleeve size

4 Unit 2 Unit

Saving Installation Space

Compared to competitors our products have high COP and EER.

Total outdoor unit capacity: 40HP(LRP-N2900A 4 units)

Total outdoor unit capacity : 40HP(LRP-N5800B 2 units)

Conventional Through the wall sleeve pipe diameter area (50% area saving)

Sleeve size

In 40HP case floor area comparison between 10hp and 20 hp models (21% space saving)

Area 9.03m2Area 7.1m2

Sleeve size

Flexible pipe installation in 3 directions

Various installation case according to outdoor unit location

Moving and handling of “conventional” unit - Cost is high - Possibility of drop while using cranes

Moving and handling of “Multi-V plus” unit - Outdoor unit size is compact - Easy to handle through fork lift slot

Altitude

Longest pipe

Subcooling circuit technology adapting Double tube heat exchanger(LG patent)

After Reliability test, installation possible up to 120m long pipe, 50m altitude

Improved heating and cooling capacity due to advance subcooling circuit

Outdoorunit

2 phaserefrigerant

Expansionvalve

Double tubeHEX Indoor

unit

Liquid refrigerant

Spiral tube

Longest pipe, highest altitude technology

40HP

Subcooling control is unstable Pressure drop is large if use

long piping Refrigerant amount is unstable Indoor unit capacity drops

Subcooling control is stable Pressure drop is minimum even in

long piping : keeping total capacity Proper amount of liquid refrigerant

can be t to indoor unit Prevent indoor unit capacity drop. Reduce total refrigerant amount

(LG 100%, Daikin 112%, Mitsubishi 118%)

Conventional

improved heating and cooling capacitydue to advance subcooling circuit

Outdoorunit

Indoorunit

Outdoorunit

2 phaserefrigerant

Expansionvalve

Double tubeHEX Indoor

unit

Liquid refrigerant

Spiral tube

New Subcooling Circuit

Wide range of running conditions

Cooling range

competitors

Heating range

competitors

Alternate compressor cycling / Back-up function

1) Normal running conditions

Multi compressor system with longer life cycle of each compressor due to alternate working

Inverter

Const. speed

Const. speed

Const. speed

Alternate compressor cycling / back-up function

2) Compressor failure situation

Alternative compressor is still running

Inverter

Const. speed

Const. speed

Const. speed

High Safety Measures

Heat exchanger

Safety cover

Separated equipments space (compressor,control box) and heat exchanger space

Resistant to dust, rain, corrosion and other environment factors

Control and mechanical parts are perfectly sealed

Low noise outdoor unit

Rear Side Front

Outdoor fan motor has step controlNoise transfer from compressor to HEX

Outdoor fan motor has inverter controlLow noise due to separated parts

and prevented by safety cover

Rear Side Front

Less 4~5dB

Convenient maintenance | Swing Type Door

Smart aesthetics after installation

Convenient maintenance due to swing type door design

Fuzzy control

Tar

get

PID control

Time

In start up, fuzzy control senses ambient & room temperature

and achieve target in shortest time as per the load condition.

Stabilize indoor air temperature to optimum level.

High capability & Reliability of the unit is assured by preventing

overshooting and making use of all control system accurately. In heating mode, keeping the indoor unit capacity down to the

–10 of outdoor temperature.℃

Intelligent Fuzzy Control System

Installation (Dong Moon High school)

Outdoor Unit

1 WayCst

4 WayCst

4 WayCst

Outdoor unit : 20HP x 13set, 10HP x 13set Indoor unit : 4 way x 74EA, 1 way x 4EA

Thermister

Solenoid valve

Pressure sensor

Pressure switch

Check valve

LEV

Service valve

정속Comp

InvComp

O/SO/S

Drier

H/G

Liq. Inj

Gaspipe

Liquidpipe

Air temp.sensor

HEX thermostat of outdoor unit

Liquid Temp. sensor

Outlet tempSensor of Subcooling circuitsensor

CompressorDischargeTemp.sensor

Suction Temp sensor

High pressure sensor

LowPressuresensor

Main Outdoor LEV

SC LEV

Reversing Valve

Accum

inlet tempSensor of Subcooling circuitsensor

■ Schematics of 20HP Cycle

Enjoy Fresh & Cool Life… with LG!!

Thank You