LG PRHR040 User Manual
61799 LG Multi V Catalogue 4/5/07 2:15 pm Page 1
www.lge.com
2007
Air Conditioning System
If you need a highly efficient air conditioning system in your building,
LG is the right choice for you.
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Great Company Great People
Brief History
Establishment
1947 Establishment of the LG Group
1958 Establishment of LG Electronics Inc.
1962 Establishment of Digital Appliance Company
Growth
1968 Manufactured Korea’s first air conditioners
Test Tower
1985 Introduced Korea’s first Inverter air conditioners
1986 Exported Korea’s first window-type air conditioner
U.S.
1989 Won the approval of “UL’s MDP & CSA’s EEVP”
1993 Obtained ISO 9001 Certification from “BSI-QA”
1994 Export Records US$ 100 Million
Global
1995 Establishment of LGETA in China
Expansion
1997 Establishment of LGEIL in India
1999 Establishment of LGEAT in Turkey
1999 Establishment of LGEMH in Vietnam
2001 Establishment of LGEAZ in Brazil
2002 Establishment of LGETH in Thailand
2002 Establishment of LGEIN in Indonesia
2004 Turnover of US$1. 4 Billion dollars
2006 Achieved No.1 position for 7 years ( 2000~2006)
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LG Air Conditioner Global
LG Air Conditioning Division, Korea
LG Electronics Arcelik Turkey
LGE New Delhi Ltd., India LGE Haiphong Inc., Vietnam
LG Electronics ThailandLGE Tianjin Appliance Co., Ltd. China
LG Electronics Indonesia LGE da Amazonia Ltd., Brazil
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Indoor unit
52
55 66 68 70
Wall
MountedSeries
Ceiling Cassette
-1way
Ceiling Cassette
-2way
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Outdoor unit
10
16 4228
72 74 76 78
Ceiling & Floor Ceiling Cassette -
4way
Ceiling
Suspended
82 84 86
Ceiling
Concealed Duct
- Built in
Floor Standing
- With Case
Floor Standing
- Without Case
Ceiling
Concealed Duct
- High Static
80
Ceiling
Concealed Duct
- Low Static
90
Network solution & Accessory
90 92 93 94 95 98
Individual
Controller
Simple Central
Controller
Deluxe Central
Controller
Central
Controller
96
BNU-LW97BNU-BNPC Based
AccessoryPDI
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HP 5 8 10 12 14 16 18 20
Heat pump
Outdoor unit line up
Heat recovery
Heat pump
06 _ Air conditioning system
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22 24 26 28 30 32 34 36 38 40
Air conditioning system _07
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Indoor unit line up
Series
SRAC
Ceiling
Cassette
Btu / h
Panel
Wide
Mirror
Wall Mounted
1way
2way
4way (570*570)
7k 9k 12k
4way (840*840)
Ceiling & Floor
Ceiling Suspended
High Static
Ceiling
Concealed
Duct
Low Static
Built-in
With Case
Floor
Standing
Without Case
08 _ Air conditioning system
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18k 24k 28k 36k 42k 48k
Air conditioning system _09
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Outdoor unit
The MULTI V system is composed of serially arranged refrigerant piping,
and multiple indoor units connected to one outdoor unit. It is a highly
efficient system that offers outstanding energy reduction, simple and
easy design and installation, and the ability to connect to many types
of indoor unit for all types of application.
16
42
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28
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Pursuing the market needs of high energy efficiency and environmental friendliness.
A line up with a wide range of model/capacity selection
The various selection of outdoor units coupled with the wide range of indoor units,
means that the system has the ability to make any space comfortable
whether it be a small shop, residential application, or large office building.
4WAY Cassette 1WAY Cassette Ceiling Concealed Duct
Mirror Wall Mounted Floor Standing
Longer field piping runs for flexible installation
With a maximum pipe run of 150m from the outdoor unit
to the furthest indoor unit, there is greater choice of where
the outdoor and indoor units can be positioned. Therefore
the system is suitable for installation into most
types of building.
Outdoor unit
Max height
50m
Actual piping longest
length 150m
Elevation among
indoor units 15m
12 _ Air conditioning system
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incorporates inverter compressor and fan motors.
Outdoor unit
Outdoor
unit
Why inverter ?
- Higher efficiency
- Reduced operation noise
- Less vibration
- Enhanced capacity control
Automatic addressing between outdoor and indoor units
The addressing between outdoor unit and indoor units is carried out by the touch of a
button. When the addressing is complete, the system is ready to run.
Manual addressing Auto addressing
Indoor unit
Wired remote
control
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
Wired remote
control
Wired remote
control
Wired remote
control
Wired remote
control
Wired remote
control
Non-polarised communication wiring
The communication wiring can be installed polarised, non-polarised, or a combination of
the two, and the outdoor unit will sort out the mistakes during automatic addressing.
Polarity connection
Outdoor unit control box
indoor
outdoor
unit
EF C
central controller
D Vcc GND
indoor unit 2
unit
indoor unit 1
•••
Outdoor
unit
Indoor
unit 1
Indoor
unit 2
Non-polarity connection
Outdoor unit control box
indoor
outdoor
unit
EF C
central controller
D Vcc GND
unit
indoor unit 1 indoor unit 2
Outdoor
unit
°°°
Indoor
unit 1
Indoor
unit 2
Air conditioning system _13
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Pursuing the market needs of high energy efficiency and environmental friendliness.
Urethane coated PCB
- Protects PCB from oxidization
- Prevents errors that may be caused
by moisture and dust
- Strengthens electrical insulation
- Kepts components stable from
vibration.
Urethane coating
Indoor unit with interior concept
Indoor units with unique stylish designs blend in with
refined interior.
14 _ Air conditioning system
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Neo Plasma Air Purifying System (applied models only)
LG’s unique NEO Plasma Air Purifying System is equipped with 7 specialized filters in 5 separate
stages to enhance its cleaning power. It reduces fine dust and mold, unpleasant odors and
cigarette smoke as air passes through each filter.
Outdoor unit
Outdoor
unit
1 2 3 4 5
Polluted Air
1. Pre Filter
The antibacterial pre-filter primarily reduces large
dust, mold and quilt dust.
2. Nano Carbon Filter
Nano-size carbon filters removes fine odorous particles
from the household air resulting in a more pleasant
environment.
What is Nano Carbon Ball?
Microscopic sized (1/1000000000) filter to
ensure optimal filtration of odors.
200~500nm
3. Triple Filter
The triple filter consists of three specialized filters to
reduce the symptoms associated with various organic
compounds including formaldehyde. It also has the
ability to reduce unpleasant odors creating a more
comfortable environment.
Clean Air
5. Plasma Filter
The PLASMA Air Purifying System developed uniquely by
LG not only reduces microscopic contaminants and dust,
but also reduces house mites, pollen, and pet fur to
reduce allergy and asthma symptoms.
Test Result Certification
Nano
Particle
Bacteria,
Virus
Nano
Particle
Capture
Nano
Particle
Bacteriolysis Regeneration
Nano
Particle
(Active State)
Bio Active
Site
Active State Bacteria Selective
4. Nano Bio Fusion Filter
Nano bio fusion filters allow their nanosize bio enzymes
to directly penetrate through cell walls of some
bacteria and allergen to decompose its cell nuclei.
Distinctions from Conventional Filters
• Conventional
Simply inactivate
bacteria
Destroy bacteria but allow
part of them to survive
• Nano Bio Fusion Filter
The bio enzyme destroys cell walls
and nuclei of some bacteria and
allergens.
Air conditioning system _15
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Hotel School
FactoryOffice
Applications
- Hotel
- School
- Office
- Factory
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What is
is a two pipe heat pump system, which is available from 5Hp
(single module) up to 40Hp (combination multiple outdoor units together). Up
to 40 indoor units can be connected to one system, reducing installation
material cost, and installation time. Combined with the many control options on
offer, the system can offer a total building solution.
Outdoor unit
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Installation Space
User satisfaction is further increased with , by reducing the
installation area through efficient utilisation of space assisted by the design of the
outdoor unit.
High efficiency linear control
allows capacity control in the range of 10-130% according to the
indoor units load requirement. This is carried out by applying the optimised
control algorithm using the inverter and constant speed compressors as the load
increases/decreases. Combined with the outdoor unit inverter fan motors, this
highly efficient inverter system also offers low noise operation, outstanding load
response (quick and comfortable cooling and heating), and excellent energy
reduction.
Inverter
compressor
Constant speed compressor Highly efficiency linear control
Outstanding installation space utilisation
The two way air induction (front and rear), and top discharge structure, allows
outdoor units to be placed directly next to each other - offering
reduced installation space, and reduced system footprint.
Conventional
Top discharge with 3way inlet
Installation of multiple outdoor units in this way can reduce installation by up to
30% compared to equivalent systems on the market (some of which use the 3
way air induction and top discharge method).
Top discharge with 2way inlet
18 _ Air conditioning system
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Economy
ensures an economic life due to its high efficiency operation,
reduced installation material usage, and therefore reduced installation cost.
Long and reduced field piping for flexible installation
gives you the ability to connect multiple outdoor units together to form
one system (therefore one set of pipes entering the building). This coupled with the
long field piping runs makes the system not only very flexible in the type
of buildings where it can be installed, but can reduce installation costs and even
reduce installation space (especially within the risers).
Outdoor unit
Outdoor
unit
Conventional
Sets of existing 10HP outdoor units are separately installed.
refrigerant piping
(liquid pipe + gas pipe)
15% reduction of sleeve
pipe diameter as
compared to existing
ones.
Air conditioning system _19
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Efficiency
obtain efficient operation and reduce noise.
Components fully protected from the elements
1. Electrical and mechanical parts are totally sealed in their enclosures.
2. Separated equipment space between compressors/control boxes, and heat
exchangers.
3. Because the electrical and mechanical parts are sealed in their own enclosures, this
makes them much more resistant to environment factors which can cause
corrosion (such as dust and rain) - thus improving the lifetime of the outdoor unit.
uses the cutting edge artificial intelligence (known as ‘fuzzy control’) to
Alternate compressor cycling / back-up function
1. Duty-cycling function
alternates several compressors
conditionally to elongate product life span.
to meet diverse load in operation
1. inverter + constant speed 2 - inverter only
2. inverter + constant speed 3 - inverter only
3. inverter + constant speed 1 - inverter only
Heat exchanger
Safety cover
Normal running conditions
inverter const.
MULTI compressor system with longer life cycle
for each compressor due to alternate operation
speed 1
const.
speed 2
const.
speed 3
2. Back-up function
operation when one compressor fails to raise product
reliability.
to back up when constant speed compressor 2
is out of order
1. inverter + constant speed 2 (out of order)
2. inverter + constant speed 1 (back up operation)
20 _ Air conditioning system
can accommodate back up compressor
Compressor failure situation
inverter const.
Alternative compressor starts to run
speed 1
const.
speed 2
const.
speed 3
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Subcooling circuit technology
The double tube heat exchanger (LG patent) improves heating and cooling
capacity due to the advanced subcooling circuit.
Outdoor unit
Outdoor
unit
From outdoor
2 phase fluid
spiral tube
Double tube heat exchange
Linear expansion
valve
To indoor
Liquid phase
Fuzzy control system
The fuzzy control system enables optimum conditioning by quickly attaining and
maintaining the desired temperature for a much more pleasant and comfortable
environment.
Existing control
Target temp.
Fuzzy control
Time
Air conditioning system _21
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Longer piping, higher elevation
Reliability tests have proved that installations with
piping length of 150m and elevation up to 50m are
possible.
Wide operation range
Wide operation range
- Cooling mode : -5°C DB - 43°C DB
- Heating mode : -20°C WB - 24°C WB
Heating mode Cooling mode
0⍭C
-20⍭C
elevation
50m
total piping length : 300m
actual longest piping length : 150m
0⍭C
-5⍭C
24⍭C
22 _ Air conditioning system
43⍭C
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Convenience
From installation to maintenance and service, adds convenience to
cutting-edge technology.
Flexible pipe installation in 3 directions
Outdoor unit
Outdoor
unit
3 directions
Convenient swing doors/electrical
component enclosures
The swing door design (using the electrical
component enclosures) enables easy access to
compressors and piping for service and
maintenance purposes.
is easy to load,
un-load and move around
Sections cut into the base of the unit, for fork lift
or pallet truck access. Enables easy loading for
transportation, and easy moving when the unit is
being installed/positioned.
Inverter
board
Main
board
Air conditioning system _23
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Outdoor unit specifications
Heat pump
24 _ Air conditioning system
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Heat pump
Outdoor unit
Outdoor
unit
Air conditioning system _25
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Outdoor unit specifications
Heat pump
26 _ Air conditioning system
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Heat pump
Outdoor unit
Outdoor
unit
Air conditioning system _27
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Computer room Office
Fitness room Locker room
Applications
- Machine room / computer room, office
- Fitness room, locker room
- Kitchen, restaurant
- According to customer’s need,heating & cooling may be
required simultaneously. (hotel, office, etc.)
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What is
is a three pipe heat recovery system, which means simultaneous
cooling and heating is possible from one system. This is achieved using the three
pipes from the outdoor unit in conjunction with heat recovery boxes. The heat
recovery boxes (or HR boxes) are installed between the outdoor unit and indoor
units, and the refrigerant is distributed to the indoor units in its required state
(depending on whether or not cooling or heating is required). Heat that is
removed from one room can be used elsewhere within the system where it is
required, thus making the even more efficient. The
is available from 8Hp (single module) up to 40Hp (combining multiple outdoor
units together). Up to 40 indoor units can be connected to one system, reducing
installation material cost, and installation time. Combined with the many control
options on offer, the system can offer a total building solution.
Outdoor unit
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Technology
Simultaneous heating and cooling with one outdoor unit Your environment is ensured of optimum conditions regardless of season or space.
Technology
Existing mode switching type
- Outdoor temperature: 7°C DB / 6°C WB
- Indoor temperature : 20°C DB / 15°C WB
Cooling
Cooling
Heating
Cooling
Heating based operation
: Many indoor units run in heating mode,
a few run in cooling mode
Cooling based operation
: Many indoor units run in cooling mode,
a few run in heating mode
Wide operation range
30 _ Air conditioning system
Wide operation range
- Cooling mode: - 5°C WB to 43°C WB
- Heating mode: - 20°C DB to 24°C DB
- Synchronous mode: -10°C DB to 30°C DB
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