LG Air conditioning Company
Multi V Water Ⅱ
Air Conditioning Academy
1.1 What is Multi V Water II?
High Performance
Prospect rights
Water pipe
Refrigerant
pipe
Indoor unit
Beautiful Exterior
Convenience and Comfort
1.1 What is Multi V Water II?
1. Introduction
LG Water Cooled system
Air Cooled System
Water Cooled System
Cooling Tower
Water pipe
Refrigerant pipe
Outdoor Unit
Indoor unit
Boiler
1.2 External Appearance
1. Introduction
3Ø, 380-415V, 50Hz & 3Ø, 380V, 60Hz
ARWN100LA2
ARWN200LA2
ARWN500LA2
ARWN600LA2
ARWN300LA2
ARWN400LA2
1.3 Product Background
1. Introduction
High Performance
1.3 Product Background
1. Introduction
High Performance
5
5
4.5
4.5
Water cooled outside
Water cooled outside
4
4
3.5
COP
COP
3.5
Air cooled outdoor
3
3
Air cooled outdoor
29%↓
2.5
2.5
49%↓
2
1.5
2
0
10
20
Floor
Indoor temperature(℃)
30
1.5
30
40
50
Outdoor temperature [oc]
Outdoor temperature(℃)
60
1.3 Product Background
1. Introduction
1.4 System Layout
1. Introduction
Beautiful Exterior
1.4 System Layout
1. Introduction
Cooling Tower
Water pipe
Refrigerant pipe
Refrigerant pipe
Outdoor Unit
Indoor unit
Boiler
Water pipe
1.4 System Layout
1. Introduction
■ High Rising Building
Discharge air circulation
expected site
Efficiency
down
Efficiency
down
Efficiency
down
• Solve the outside air
flow problems
• Aesthetic external
appearance
• Energy Saving
Water cooled system
is the optimal solution
1.4 System Layout
1. Introduction
■ Office Building
100m
Or more
Shops
• The solution of discharge air
circulation and indoor unit
height difference limits
• Energy saving
• Aesthetic Appearance
• Simultaneous operation during
interim season
• No external installation space
for ODU
• Height difference is 50m or more
Water cooled system
is the right solution
2.1 Product Line up
2. Line up
2.1.1 Outdoor Unit
Outdoor unit
Power
10HP
20HP
30HP
40HP
50HP
60HP
8HP
16HP
24HP
32HP
40HP
48HP
3Ø 380~415V
50Hz
3Ø 380V 60Hz
3Ø 460V 60Hz
Outdoor unit
Power
3Ø 220V, 60Hz
2.1 Product Line up
2. Line up
2.1.2 Indoor Unit
kW
1.6
2.2
2.8
3.6
4.2
5.6
7.1
8.2
10.6
12.3
14.1
23.9
30.2
Btu/h
5k
7k
9k
12k
15k
18k
24k
28k
36k
42k
48k
76k
96k
ART COOL
Series
Gallery
SRAC
Wall Mounted
Mirror
1Way
Ceiling
Cassette
2Way
4Way
Ceiling & Floor
Ceiling Suspended
Ceiling
Concealed
Duct
High Static
Low Static
Built-in
Floor
Standing
With Case
Without Case
Console
Fresh air Intake
3.1 USP
3. USP
3.1.1 Multiple Heat Source
Various heat source
Cooling Tower
Direct Expansion AHU
Local power plant
Boiler
Heat Source
Multi V IDU
Water-cooled Multi V ODU
3.1 USP
3. USP
3.1.2 Wider Operation Range
Cooling
Heating
3.1 USP
3. USP
3.1.3 Installation Space / Reduced Installation Area
Compact Size and excellent space efficiency
1,120mm
547mm
772mm
※ Water Source Multi V 20HP
- Weight : 238 kg
※ Stacking is possible which further
saves space.
3.1 USP
3. USP
3.1.5 DC Inverter Compressor
Oil injection Mechanism
Optimized Scroll Shape
For R410A
High reliability
in low rpm operation
High Efficiency
in partial-load operation
Oil Discharge Reduction
LG DC Inverter Motor
High reliability in high rpm operation
Enhanced Oil Circulation
Teflon Coated Bearing
High-performance Oil Pump
High Efficiency
Low Noise
3.1 USP
3. USP
Unit: mm
3.1.6 Plate Type Sub-cooler
Plate type Heat Exchanger
Double Pipe
Plate HEX
Remark
20.1 D42.7
169.4
H 187
47.6
200
Shape
225.4
130.6
370
521.1
W 72
H254 x W521 x D47.6
H197 x W107 x D40
Increased
Sub cooling
3.1 USP
3. USP
3.1.7 Synchronized Operation
Zone A
Optimal solution on simultaneous operation
Heating or cooling mode according to OSU.
Heat
exhausting
Cooling
Need not separate Heating/Cooling pipe.
(Central A/C : 4 pipe, W/C Multi V : 2 pipe)
Heat
exhausting
Cooling
If the cooling & heating capacity are same, it
operates only with the circulation of water.
High efficiency system
Heat
Absorption
Heating
Linear control with inverter system
Heat
Absorption
Heating
Zone B
40% higher COP compared with Air-cooled type
Max. 80% higher COP in the case of simultaneous
operation
3.1 USP
3. USP
3.1.8 Better Performance
5.0
DC Inverter Compressor
4.7
4.3
DC Inverter Unit Combination
Plate Type Heat Exchanger
S Co.
LG
M Co.
* Based on 10HP model
3.1 USP
3. USP
3.1.9 Long Piping
Longest Piping Length 150m, Total Piping Length 300m
Comparison with Competitor
▶
The longest piping length : 150m
▶
The total piping length : 300m
LG
A Co.
Actual Piping
Length
150 m
120 m
Equivalent
Piping Length
170 m
140 m
Total Piping
Length
300 m
300 m
Outdoor Unit
Elevation 50m
Longest pipe length after 1 branch : 40m
Water Pipe
Refrigerant Pipe
Between Indoor
Units 15m
Indoor unit
3.1 USP
3. USP
3.1.10 Black Box and Back-up Function
Black Box
- Recording operation data history before system failure (3 min.)
- Precise Analysis & Decision
- Fast trouble-shooting
Back up function
Compressor failure situation
1. Inverter Comp. failure
Failure
2. CH21(Error code) is displayed
Inverter Comp.
Constant Comp.
3. Back-up by field setting (Dip S/W)
3.1 USP
3. USP
3.1.11 BLDC Inverter Units
38dB(A)
AC Motor
28dB(A)
[ BLDC motor for 4way ]
[ BLDC motor for 1way ]
33dB(A)
BLDC Motor
70%
90%
100%
110%
[ Wide operation range ]
130%
AC motor
BLDC Inverter
[ Weight comparison ]
3.1 USP
3. USP
3.1.12 Network Solution
• User-setting Auto Changeover
• Mode Override (Master / Slave)
Master
Slave
Slave
• Free Access of Group control
• Indoor Control
- Each IDU Lock Function
- Each IDU Temp. Range Setting
3.2 USP
3. USP
3.2.1 High Energy Efficiency
5.0
[128%]
3.90
[100%]
ARUN100LT2
Multi V PLUS II
ARWN100LA2
Multi V Water II
Better Performance and Stable than the same
capacity air cooled system
3.2 USP
3. USP
3.2.2 High Efficiency
High Efficiency
Volume
86% down
Increase Sub Cooling : 100m height Installation
- Optimization for EEV flow control factor
Ensure Field Reliability
- Stable Flow Rate, Refrigerant Noise down
Existing control
Target temperature
Fuzzy control
3.2 USP
3. USP
3.2.3 Self Diagnosis Function
Boiler
☞ ‘Flow S/W Error’ caused by the water flow shortage [CH24]
- Check the cooling tower & pump
- Check the water pipe
- Check the strainer
Cooling
tower
☞ ‘High pressure Error’ [CH43]
- Water flow shortage
- Raise of water temperature (Check the cooling tower)
- Check the cooling cycle of product
Pump
Flow S/W
error
Strainer
Flow S/W
High/Low Presser
error
3.3 Product Comparison
3. USP
3.3.1 System Comparison
Compact Design
High Efficient System
Cost Comparison
1,120mm
125%
100%
81%
130%
100%
547mm
772mm
Front SVC panel
Weight (170kg)
Pile up
(60HP)
W/C Multi V
W/C MultiV + AHU
Central A/C + AHU
Central A/C
Initial Cost
Running Cost
※B1F~F Office Building Case in Kazakhstan
62% less
footprint
3.4 Benefits
3. USP
3.4.1 Low Running Cost
End-user
Low Running Cost
3.4 Benefits
3. USP
3.4.2 Multiple Applications
End-user
Water cooled system is suitable for High rising building difficult to apply air
cooled system, remodeling building installed central air conditioning system, severe cold area. etc.
Economical installation,
maintenance cost
simultaneous Cooling
heating load facility
Government & public office
Underground space
Premium/ high rise apartments
Partial / special load
Places requiring
Individual A/C.
Existing equipment remodeling
3.4 Benefits
3. USP
3.4.3 LG Air Conditioner Technical Solutions (LATS) - Multi V
Consultant
• Convenient model selection
• Highly user-friendly design (Autocad Version)
• Automatic piping design & check
Download & auto upgrade from Sales Supporting System
(http://www.lgeaircon.com)
<Multi V model selection>
Consultant
3.4 Benefits
3. USP
3.4.4 LG Monitoring Viewer (LGMV)
Installer
• Easy start-up, Easy trouble shooting
• Monitoring whole system such as compressor, fan, valves, etc
USB
- Operation State
- Indoor Controller
- Cycle View