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Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Multi F / FDxMulti F / FDxTraining Material
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Contents
1. System Introduction ………………….………….…………………….…...................
1.1 Define………………………………………………………………………………………………..
1.2 conceptual difference……………………………………………………………………………..
2. Nomenclature ………………….……………………..……………….….......................
2.1 ‘Indoor units (Global)….……….….………………………………………………………………
2.2 Outdoor unit (Global) …………………………………………..................................................
2.3 Indoor units (Europe)………………………………………………………………………………
2.4 Outdoor unit (Europe)………………………………………………………………………………
3. Line Up………………….…………………….……….…………….…………………………………..
3.1 Outdoor Unit ……………………………………….….…………………………………………..
3.2 Indoor Units…………………………………………................................................................
4. Features & Benefits ………………………………………………………………………
4.1 Energy Saving ………………………….….………………………………………………………
4.2 More Powerful……………………………………………………………………………………..
4.3 Powerful BLDC Compressor……………..….……………………………….…………………
4.4 Step-up Inverter by the PFC & the Sine Wave Control Technology………….................
1
2
3
4
4
4
4
4
5
5
6
7
7
7
8
8
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
4.5 Wide Range………………………….……………………………………………………………
4.6 Comfortable…………………………………………….…………………………………………
4.7 BLDC Fan …………………………………………………………………………………………
5. USP…………………………………………………………………………………………
5.1 Better Performance………………………………………………………………………………
5.2 Free Joint………………………………………………………………………………………..
5.3 Compatible Indoors…………………………………………………………………………….
5.4 Changeable Panel (SE, S8)…………………………………………………………………..
5.5 Low Heights Cassette Indoor…………………………………………………………………
5.6 Compact Outdoor………………………………………………………………………………
5.7 Longer Piping…………………………………………………………………………………...
5.8 Indoor Combination…………………………………………………………………………….
5.9 Small and light weight Outdoors ……………………………………………………………..
5.10 Easy Installation………………………………………………………………………………..
6. Network Controls………………………………………………………………………..
7. Application Guidline……………………………………………………………………
8. References - Petro Pars HQ BLDG……………………………………………………
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Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Non-Inverter Inverter Type
Multi MFree Joint
Multi M/M DX
Distributor Box
Free Joint
14~30K 48/50K~140K 14~40K 40~45K
Multi-split systemMulti-split system
MultiFixed Joint
Fixed
14~44K
Tropical Model
35~44K(3Ф)
Non Tropical Model Multi Pipe
1. System Introduction
1/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Single piping with BD boxSingle piping with BD box
Up to 9 indoor units
*BD unit : Branch Distributor unit
Multi pipingMulti piping
Up to 5 indoor units
1. System Introduction
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
1.1 DefineWhat is a Multi System ?
1. System Introduction
2/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
1.2 Conceptual difference Single and Multi Systems
1. System Introduction
3/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
• Various combination
Total 1,250 types of combination are available with using 14 outdoor units and 36 indoor units
• Wide range
LG multi provide various indoor units, and outdoor units up from 4.1kw to 16.4kW.
• Convenient control
Various kinds of controllers are available such as PC, Deluxe and Simple Central Controller.
• Long and high elevation piping
Multi F and Multi Fdx system supports a total piping length from 30m to 145m and high elevation from 15m to 30m for more flexibility depending on the installation site condition.
• Powerful operation
Multi F/FDX System
1. System Introduction
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Less Installation EffortLess Maintenance Effort
Less Product PriceLess Installation EffortLow Outdoor NoiseSpace Saving(Outdoor)
Same Cooling Power with Less Outdoor Units
Same Cooling Power with Less Outdoor Units
Using Pipe Not DuctUsing Pipe Not Duct
Individual ControlIndividual Control
Less Operation Cost
Multi isBest Solution
Comparedwith
Stronger Points
Single System Single System
Ducted System Ducted System
1. System Introduction
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
PricePrice
Installation LevelInstallation Level
Low High High
EasyNormalNormal
Constant speed
Multi pipingMulti piping Distributor Type Distributor Type
Inverter Compressor
Multi pipingMulti piping
Running CostRunning Cost
High Low Low
Capacity range(Btu/h)
Capacity range(Btu/h)
14 ~ 44k 14 ~ 40k 1 phase: 40 ~ 56k3 phase: 36 ~ 54k
1. System Introduction
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
2.1 Indoor units (Global)
2.2 Outdoor unit (Global)
4/36
2. Nomenclature
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
2.3 Indoor units (Europe)
2.4 Outdoor unit (Europe)
2. Nomenclature
5/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
PhaseMax Indoor
Units Feature
Mu
lti
1Φ,220V
2
3
4
PhaseMax Indoor
Units Feature
Mu
lti
F
1Φ,220V
2
3
4
PhaseMax Indoor
Units Feature
Mu
lti
F D
X
1Φ,220V
Capacity Range (kBtu/h)
14 18 21 30
Capacity Range (kBtu/h)
14 15 24 2718
Capacity Range (kBtu/h)
7
8
9
35 40/42 54/5648
3Φ,380~414V
5
7
8
9
UH
U3
UE
U3
(Fre
e jo
int)
(In
vert
er)
(In
vert
er
+ D
B)
21 30 40
4
3. Line- Up
UM
UE
UE1
UH
UE
UE
UE1
6/36
3.1 Outdoor units New developmentOld model
Chassis
Chassis
Chassis
Air Conditioning Academy2008-3 Ⓒ LG AC Academy 7/36
3. Line- Up
3.1 Indoor units
Indoor Units
Mu
lti
F/F
DX
SRAC
ARTCOOL
Mirror
4Way CST
1Way CST
L.Duct
H.Duct
BUILT IN
CEILING &FLOOR
7k 12k 24k18k9k
S4 S5
SF
SE S8
TR TP
TC1
B1 B2
BH
BP
VE VB
Ind
oo
r U
nit
TQ
TE1 TH
Old model
New developmentDevelopment plan
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Multi F type1.A3UW216FA3 between A3UW186FA0 & A4UW246FA3 will be launched newly in 2007. 3Room will be connected and Size of tool is same with FM19AH
New
New
W=870 mm D=320 mm
H=655mm
W=870 mm D=320 mm
H=808mm
3. Line- Up
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Multi F type1.A4UW276FA3 newly launched in 2008.2.5 room model added in Line up3.Capacity of multi piping model increase to 40kbtu.
New
New
New
4
↓
5
W=870 mmD=320 mm
H=808mm
W=870 mmD=320 mm
H=1,038mm
Volume : 76%
3. Line- Up
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
W=950 mmD=330 mm
H=1,380mm
W=870 mmD=320 mm
H=808mm
W=806mmD=690mm
H=1,507mm
New
New
Volume : 52%
Multi FDX type1.The volume of A9UW566FA3 decrease 52% in volume2.Rooms connected to multi Fdx add 1 more.(Max 9 room)
3. Line- Up
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
4. Features and Benefits
4.1 Energy Saving
4.2 More Powerful
An inverter's capacity will fluctuate in order to match the air-conditioning requirements, so an inverter can be more energy efficient than a constant speed compressor.
With a wider operation range for heating and cooling, the inverter is able to operate in even the most extreme outdoor temperatures. An inverter compressor can also operate faster than conventional air conditioners thus allowing the air conditioner to reach the set temperature faster and brings you comfort sooner.
8/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
4.3 Powerful BLDC CompressorThe LG inverter air conditioner comes with a BLDC compressor that uses a strong neodymium magnet. Its compressor thus has improved efficiency compared with AC inverter.
4.4 Step-up Inverter by the PFC & the Sine Wave Control Technology
(*PFC :Power Factor Correction)
The LG air conditioner is manufactured using the PFC and the sine wave technology. By the PFC control, raising the operating voltage from the existing DC 280V to DC 380V can be done.
The sine wave control enables soft operation in a low frequency area, thereby expanding the product's operating range. This also markedly improves the product's energy efficiency.
9/36
4. Features and Benefits
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
4.5 ComfortableOnce the desired temperature is achieved, unlike conventional air conditioners that turn the compressor on and off, LG inverter units adjust and constantly vary the compressor speed to maintain the desired temperature with minimal fluctuation to ensure that your comfort is not compromised
10/36
4. Features and Benefits
4.7 BLDC Fan
BLDC fan motor offers additional energy saving in operating mode. Compared with AC motors, BLDC fan motor can cut energy by 34%at full velocity. AC motor is operating at full velocity only but BLDC Motor can change velocity according to load. Energy efficiency levels at low velocities in particular have been improved by 54%.
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
3.223.22 3.543.54
4.404.40
OLD NEWNEW
3.703.70
3.213.21 3.543.54
3.43.44.504.50
Cooling Efficiency
9%
5.1 Better Performance
25% 14% 23%
Better Performance with higher EER and COP(High EER or COP compared to old models at cooling mode as well as heating mode)
Heating Efficiency Cooling Efficiency Heating Efficiency
24 kBtu/h24 kBtu/h 30 kBtu/h 30 kBtu/h
5. USP
11/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
24 kBtu/h24 kBtu/h
3.543.54
30 kBtu/h 30 kBtu/h
4.404.404.404.40
D CompanyD Company LGLG
3.903.90
3.303.304.174.17
3.43.4 4.504.50
5% 10% 10% 2%
Better Performance with higher EER and COP(High EER or COP against Daikin at cooling mode as well as heating mode)
Cooling Efficiency Heating Efficiency Cooling Efficiency Heating Efficiency
5.1 Better Performance
5. USP
12/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
5.2 Free Joint
5. USP
☞ Multi F/FDx model give you the flexibility to connect any model of indoor unit depending on your choice
13/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
5.3 Compatible Indoors
12 types of indoor units
Low static duct
5. USP
☞ Twelve different type of indoor unit are compatible with our Multi F/FDx
14/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Old • Display Wiring + Panel exchange New
++
Display Wiring
+
• Only Panel exchange
(Display on panel) (Display on body)
Silver (V)
Blue (B)
Mirror (R)
Multi Indoor - ART COOL Mirror5.4 Changeable Panel (SE, S8)
5. USP
☞ Compare to old model it is easy to change the panel without disconnecting the wire
15/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Before New
24 kBtu/h
W=670 D=670
H=269
TR/TQ Chassis
W=950 D=950
H=225
TF Chassis
5.5 Low Heights Cassette Indoor
5. USP
☞ The new 4 Way Cassette indoor unit are favorable for low ceiling height condition
TP Chassis
W=840 D=840
H=204
Length : mm
16/36
TE1 Chassis
9 / 12 /18 kBtu/h
W=570 D=570
H=214(TR)
H=256(TQ)
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
27 / 30 kBtu/h
21 kBtu/h
48 / 54 kBtu/h
New Line up
Smaller chassis
UY
U3
UE2UE1
UE
W=870D=320
H=1050
1417
740540
900 330
1380
Length : mm
5.6 Compact Outdoor
5. USP
W=870D=320
H=808
Smaller chassis
17/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
805x1,407x509 940x1,380x330
Volume Ratio Reduce
42%↓
805
50
9
33
0
940
Installation Area Ratio
47%↓
Conventional 48k /54K New 48k /54K
5. USP
5.6 Compact Outdoor
18/36
* Comparison of 48/54 kBtu/h Model
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Height
Distributor box
Main
Branch
LONGER PIPE LENGTHNew Multi-Inverter with longer pipe length and more connectivity of room
5.7 Longer Piping
5. USP
Capacity
Btu/h
Max No.
of IndoorPiping length (m)
Old New Old New
30 k 4 4 70 75
40 k 5 7 100 115
48 k 7 8 110 135
56 k 8 9 120 145
☞ The installation is more easy with flexibility of using longer connecting pipes.
19/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
① Big size Accumulator
② Cyclone type oil separator
②
Cycle DiagramCycle Diagram
5. USP
①
< cyclone type oil separator >
Refrigerant
Refrigerant+Oil
Oil
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
☞ Long & High Elevation Piping : Max Total Piping Length is up to 145m
h1
h2
Main Pipe
Indoor Pipe
B.D
B.D
h1
h2
A
B
Multi Piping typeMulti Piping type Distributor typeDistributor type
Piping Length (m)
Total(A+B)
Max (A)
In-Out(h1)
In-In(h2)
14/15k 18k 24k 30k 40k
Total (Main + Indoor)Main PipeBD – Indoor (Total) (Each)In-Out(h1)In-In(h2)
40kPiping Length (m)
30 40 50 75 85
20 25 25 25 25
15 15 15 15 15
7.5 7.5 7.5 7.5 7.5
(1Ф)(1Ф) (1Ф)(1Ф)
5.7 Longer Piping
5. USP
20/36
1005040143015
48k 54k
1355580143015
1455590143015
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
h1
h2
Indoor Pipe
B.D
B.D
Distributor typeDistributor type
Total(Main+Indoor)Main PipeBD – Indoor(Total) (Each)In-Out(h1)In-In(h2)
Piping Length (m)
(3Ф)(3Ф)
54k
5.7 Longer Piping
5. USP
☞ Long & High Elevation Piping : Max Total Piping Length is up to 145m
21/36
Main Pipe
42k
1254470203015
36k
1004050203015
48k
1355580203015
1455590203015
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
4 Room 5 Room
With Main Service Valve Type
5.8 Indoor Combination
5. USP
☞ An example of 30 kBtu/h unit. Number of room connectivity as well a combination ration is improved as compare to previous model
22/36
OLD NEW
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Max Combination Ratio
5. USP
5.8 Indoor Combination
☞ We can have a maximum combination ratio of 167%
23/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Compact Outdoor (30 kBtu/h model)
5.9 small and light weight Outdoors
5. USP
☞ Our new outdoor unit are compact as well as light weight
24/36
D company
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
5.10 Easy Installation
5. USP
25/36
☞ Flare type connection makes LG Distributor Box easy to install as compare to our competitors .
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
☞ Applicable in all Multi Inverter units
LG Air Conditioners
ACP
LON Works BACNet
HomNet
PDI
Simple Central Controller AC Smart
Deluxe Wired Remote
Controller
Dry Contact CNU
PCC
6. Network Controls
26/36
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
• BLDC Motor
Rotation Angle(deg)
0360
Loa
d T
orqu
e
Single Rotary
Twin Rotary
0
• Twin Rotary
▣ BLDC Motor
Magnet
AC BLDCItems
Structure
Efficiency
Noise
100
100
130~125
90~95
• Wide frequency range - better tower low side - heating capacity improve
• Better control at low & partial load conditions
• High efficiency
• Low vibration
• Longer life time of compressor
• Soft start operation
▣ Twin Rotary
Vibration 100 15~10
[ % ]
“ Reduce the vibration by Twin technology ! “
Suction (360 )O
DischargeValve
Vane
CylinderRoller
Shaft
Compression (90-180 )O
Discharge (270 )O
Twin
Single
1. Basic Information / Direction / DC twin compressor
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
PFC control increase the voltage operating the compressor form 280V to 380V
By using PFC control enlarge the operating range (Low ambient condition)
DC280V DC380V
1. Basic Information / Direction / PFC180 control
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
0 60 120 180 240 300 0 60
A相
B相
C相
eA
eB
eC
A+C -
B+A -
A+B -B -
C+
0 60 120 180 240 300 0 60
A相
B相
C相
eA
eB
eC
120
A+B+
A- A+B-B-
C+ C-C-C+
Pulse- wave (120 ) Sine- wave ( 180 )
EMF
IPM
Ra
EMFa
LcRc
EMFcEMFbRb
Lb
MOTORLa
Vdc
IPM
Ra
EMFa
LcRc
EMFcEMFbRb
Lb
MOTORLa
Vdc
3phase voltageComparison
3phase voltageComparison Current sensingCurrent sensingMICOM
(8/16 Bits)MICOM
(8/16 Bits)MICOM(32 Bits)MICOM(32 Bits)
o o
▣ Comparison ▣ Benefit
With adoption of sine- wave,
PWM * , which smoothes
the motor rotation,
1. The operating performance
is enhanced.
2. Noise and vibration
will be reduced
3. Heating capacity
will be raised because of
high frequency operating
at low ambient
* Pulse with Modulation
1. Basic Information / Direction / PFC180 control
Air Conditioning Academy2008-3 Ⓒ LG AC Academy
25℃
32℃
39℃
45℃
43℃
37℃
30℃
23℃
Step_Fan
Step_Fan + 1
Step_Fan + 2
Step_Fan - 1
Step_Fan - 2
<Cooling mode>
-3℃
4℃
11℃
18℃
16℃
9℃
2℃
-5℃
Step_Fan
Step_Fan - 1
Step_Fan - 2
Step_Fan + 1
Step_Fan + 2
<Heating mode>
Control
Power IPM
sensor
Filter
▣ Feature
▣ Algorithm
▣ Benefit
Along with efficient in the whole range
of low speed to high speed,
the more improvement is done especially
in the low speed operation,
compared with the conventional
Constant speed AC motor
Motor Input
Load
AC Fan MotorDC Fan Motor
EnergySaving
55-50%
90-95%
1. Basic Information / Direction / DC FAN MOTOR