ENGINEERING MANUAL
Art Cool Mirror Inverter Wall Mounted
3/4 Ton,1 Ton, 1 1/2 Ton and 2 Ton
ART COOL MIRROR INVERTER WALL MOUNTED
DFS-EM-AA-001-US_014B06
For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice.
©LG Electronics U.S.A., Inc.
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and
other materials is the property of LG Electronics U.S.A., Inc., and are
disclosed by LG Electronics U.S.A., Inc., only in confidence.
This document is for design purposes only.
Due to our policy of continuous product innovation, some specications may change without notication.
3
Introduction
About LG Electronics, Inc.
LG Electronics, Inc. is a global leader and technology innovator
in consumer electronics, mobile communications, and home
appliances, employing more than 213,000 people in more than 60
countries worldwide. With $136 billion (USD) revenue in 2011,
LG Electronics, Inc. is ranked among Fortune 500’s list of largest
companies. LG Electronics, Inc. comprises five business units—
Home Entertainment, Mobile Communications, Air Conditioning,
Business Solutions, and Home Appliance. LG is one of the world’s
leading producers of flat panel televisions, audio and video products,
mobile handsets, air conditioners, and washing machines. LG’s
commercial air conditioning business unit was established in 1968
and has built its lineup of residential and commercial products to
include VRF, Flex-Multi, duct-free split systems, packaged terminal
air conditioners (PTACs), and room air conditioners. In 2011, the air
conditioning and energy solutions business unit grew to include LED
lighting and solar products. For more information, visit www.lg.com.
Duct-Free Split (DFS) Systems
LG HVAC systems offer a range of solutions that are cost efficient,
quiet and attractive. Duct-Free Split (DFS) systems are “split” into
indoor and outdoor units, and provide a smart alternative to both
central HVAC and window-mounted air conditioners. These inverter
heat pump systems are available in a variety of configurations to suit
different cooling and heating situations. Installation by a qualified
HVAC contractor is safe and easy – little to no duct work or sheet
metal is required.
Inverter Systems
LG Single Zone Inverter Wall Mount air-source systems offer the
opportunity to minimize ductwork in the same configuration. The
system offers zoning without the need for zone damper systems.
The LG Single Zone Inverter Wall Mount system’s advanced controls
provide exceptional building dehumidification and temperature
control, and can rapidly adapt system operating parameters to the
ever changing building load. The LG Single Zone Inverter Wall Mount
system is easy to design, install, and maintain. The modular design
allows occupants to control their environmental condition, providing
individualized control of the set-point temperature and allowing oc-
cupants to condition only the occupied zones.
Quality Commitment
LG is committed to the success of DFS projects. We provide industry
leading technical support during installation and commissioning. LG
offers a variety of classes designed for installers and servicers to
ensure that every DFS system installation is completed successfully.
Classes are conducted at LG’s training centers and in field locations
at various times throughout the year and upon special request.
Due to our policy of continuous product innovation, some specications may change without notication.
4
Art Cool Mirror Wall Mounted Engineering Manual
TABLE OF CONTENTS
INTRODUCTION ..................................................................................... 5
Architectural Appeal.............................................................................. 6
PRODUCT FEATURES AND BENEFITS ...............................................8
UNIT NOMENCLATURE ......................................................................... 9
General Data ................................................................................... 10-13
General Data and Electrical Data ....................................................... 14
Outdoor Unit Dimensions ................................................................... 15
LAU090HSV2, LAU120HSV2 ............................................................ 15
LAU180HSV2, LAU240HSV2 ............................................................ 16
Indoor Unit Dimensions ...................................................................... 17
LAN090HSV2, LAN120HSV2 ............................................................ 17
LAN180HSV2, LAN240HSV2 ............................................................ 18
ACOUSTIC DATA .................................................................................19
Refrigerant Flow Diagrams ................................................................. 20
LAN090HSV2, LAU090HSV2
LAN120HSV2, LAU120HSV2 ............................................................20
LAN180HSV2, LAU180HSV2 ............................................................ 21
LAN240HSV2 LAU240HSV2 ............................................................. 21
Wiring Diagram .................................................................................... 22
LAN090HSV2, LAN120HSV2 ............................................................ 22
LAN180HSV2, LAN240HSV2 ............................................................ 23
LAU090HSV2, LAU120HSV2 ............................................................ 24
LAU180HSV2, LAU240HSV2 ............................................................ 25
Accessories ......................................................................................... 26
PERFORMANCE DATA ........................................................................ 33
Cooling Capacity ............................................................................... 33
Heating Capacity ............................................................................... 35
Equipment Selection Procedure ........................................................ 39
LAN090HSV2, LAU090HSV2
LAN120HSV2, LAU120HSV2 ............................................................39
LAN180HSV2, LAU180HSV2
LAN240HSV2, LAU240HSV2 ............................................................ 40
Building Ventilation Design Guide ..................................................... 41
Placement Considerations ............................................................ 43-45
REFRIGERANT PIPING DESIGN & LAYOUT
BEST PRACTICES ...............................................................................46
Refrigerant Piping Design .................................................................. 47
Design Guideline Summary ............................................................... 47
Selecting Field-Supplied Copper Tubing ........................................... 48
Installation & Layout Best Practices ................................................. 49
Refrigerant Piping System Layout ..................................................... 49
Piping Connection ............................................................................. 52
ELECTRICAL CONNECTIONS ............................................................54
Mechanical Specications .................................................................. 55
Acronyms ............................................................................................. 56
TABLE OF SYMBOLS
This symbol indicates a potentially hazardous situation which, if not avoided, may result in death or serious
injury.
This symbol indicates additional helpful information such as an explanation, a comment, or a clarication
about the subject.
This symbol indicates a recommendation or tip. Recommendations instruct the user to apply the suggested
practice to ensure the best operating results in order to achieve the maximum benet of the product. Tips
contain practical information that may help the user solve a problem or describe actions that may save time.
INTRODUCTION
“Architectural Appeal” on page 6
6 | INTRODUCTION
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Benefits of Single Zone
Art Cool Mirror Wall Mount Split
•Inverter technology
•Available in 9,000, 12,000, 18,000 and 24,000
Btu/h capacities
•All-season use - heat pump models for both
cooling and heating capabilities
•Operating ranges for Outdoor units of 14°F
(DB) to 118°F for cooling; 5°F to 75°F (WB)
for heating
•Operating ranges for Indoor Units of 64°F to
90°F for cooling; 60°F to 86°F for heating
•Quiet operation inside and outside
•Duct Free Split system
Convergence of Technological Innovation with Flexibility and Style
Single Zone Inverter
Wall Mount
The Single Zone Art Cool Mirror Wall
Mount Duct Free Split (DFS) System is
among the industry’s best air-condition-
ing units. Choosing an LG Single Zone
Wall Mount product provides a system
designer an edge to engineer a system
with individual control, and design flex-
ibility with advanced controls. The Art
Cool Mirror Outdoor and Indoor units are
available in a nominal capacity range
of 3/4 ,1, 1 1/2 and 2 tons. These are
best suited for applications with zones
that require heating or cooling, such as
residential, and small business office
buildings.
Single Zone Wall Mount Outdoor
and Indoor units are available in
208–230V/60Hz/1Ph.
Adaptable and
Flexible
The Single Zone Wall Mount DFS
System allows cooling or heating for the
entire residence or just a single room
without the need for evasive ductwork.
There is no tearing down of walls or
altering the homes appearance.
Long refrigerant piping lengths allow
for extra design flexibility in indoor unit
installation.
These units may be used for a number of
residential or commercial environments
such as:
•Older homes
•New home construction
•Office buildings
•Restaurants
•Hospitals / Medical facilities
•Schools
•Nursing homes
•Retail establishments
•House of worship
Inverter Technology
Inverter variable-speed DFS Systems
are measurably quieter and consume
less energy than conventional air
conditioners. The Inverter compressor
ramps up or down to match the required
room capacity and maintain the comfort
level. When the selected temperature
is reached, the inverter compressor
operates at low speed to maintain that
comfort level, thereby using less energy.
ARCHITECTURAL APPEAL
PRODUCT DATA
“Product Features and Benefits” on page 8
“Unit Nomenclature” on page 9
“General Data” on page 10
“Electrical Data” on page 7
“Outdoor Unit Dimensions” on page 15
“Indoor Unit Dimensions” on page 18
“Acoustic Data” on page 7
“Refrigerant Flow Diagram” on page 16
“Indoor Unit Wiring Diagram” on page 22
“Outdoor Unit Wiring Diagram” on page 23
“Accessories” on page 26
8 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
PRODUCT FEATURES AND BENEFITS
Single Zone Art Cool
Mirror Wall Mount
Single Zone Art Cool Mirror Wall Mount units
are equipped with inverter components that
offer superior load matching and long piping
installation. The product works for
optimizing power consumption in residential
and small office buildings. Utilizing multiple
indoor wall mount units each with custom
temperature controls allow for precise
temperature settings in each zone of the
building. Art Cool Mirror allows flexibility in
interior design and complements any decor.
Low Sound Levels
When outdoor units operate fully loaded,
they have one of the quietest sound levels
in the industry. Sound is almost undetect-
able during off-peak operation. To promote
a quiet, comfortable environment, the LG
Single Zone Art Cool Mirror indoor units op-
erate at sound levels as low as 24 dB(A) and
outdoor units as low as 45 dB(A) at full load.
LG customers often ask if the outdoor unit is
running after commissioning is complete.
All rotating components are soft-started
by the controller using digitally controlled
inverters, which reduce undesirable noise
caused by fans and compressors cycling on
and off.
Comfort Control at Its
Best
Tight temperature control through precise
load matching maximizes the time that the
indoor units remove moisture.
Unlike traditional air conditioning control
systems, which use thermostatic controls
to maintain room temperatures, LG Single
Zone Inverter controls continuously vary the
indoor unit fan speed and refrigerant flow, in-
directly providing lower and more consistent
humidity levels in the conditioned space.
The longer the indoor coil temperature is
below the dew-point of the room in
conjunction with air movement across the
coil, the space humidity level will vary little,
compared to technologies that cycle fans
and compressors on and off multiple times
per hour.
The outdoor unit responds by varying the
compressor speed and outdoor fan motors
as needed to maintain system operating
pressure. As a result, the Single Zone Art
Cool Mirror Wall Mount system delivers
precise space temperature control.
Inverter Driven
The rotary (9k/12k Btu/h systems) and twin-
rotary (18k/24k Btu/h systems) compressor
is optimized to maximize compressor ef-
ficiency, which reduces power consumption
and monthly utility bills. This latest inverter
technology allows the LG Single Zone Art
Cool Mirror Wall Mount outdoor unit to
vary the compressor motor shaft speed to
deliver an appropriate amount of cooling to
the indoor unit. Precise refrigerant volume
delivery translates into long periods with coil
surface temperatures below dew point and
minimizes compressor and fan component
run time. Occupants remain comfortable
while utility costs are reduced.
Simplified Installation
Cooling and heating systems that use the
LG Single Zone Art Cool Mirror Wall Mount
product simplify and reduce the mechani-
cal and control system design time. The
designer no longer has to be concerned
with interconnecting chilled and condenser
water piping, air-distribution duct systems,
matching and selecting chillers, towers,
pumps, coils, fans, air handlers, or Variable
Air Volume (VAV) boxes.
Operating Range
The Single Zone Art Cool Mirror Wall Mount
product has a nominal capacity range of 3/4,
1, 1 1/2 and 2 tons (depending on outdoor/
indoor units). Operating ranges include:
Art Cool Mirror Outdoor Units
Cooling: 14°F DB to 118°F DB
Heating: 5°F WB to 75°F WB
Compact Size
Single Zone Art Cool Mirror Wall Mount out-
door units have the following footprints.
LAU090HSV2, LAU120HSV2
(WxHxD (in.)): 30 5/16 x 21 1/2 x 11 5/16
LAU180HSV2, LAU240HSV2
(WxHxD (in.)): 34 1/4 x 31 1/2 x 12 19/32
Heat Transfer Efficiency
Fin Design with GoldFin™ Coating
All Single Zone Art Cool Mirror Wall Mount out-
door units are provided with large surface coils
made of copper tubes with louvered aluminum
nsdesignedtomaximizeunitoperatingef-
ciencyoverawiderangeofambientconditions.
Standard from the factory, every LG Single
Zone Art Cool Mirror Wall Mount outdoor
coil fin surface is coated with LG’s exclusive
GoldFin™ anti-corrosive coating designed
to prevent natural surface corrosion of the
aluminum fins. This maintains heat transfer
properties of the coil for an extended time.
A hydrophilic coating is applied to the
outdoor unit coil fin surface over the GoldFin
coating. This coating enhances the develop-
ment of heavier water droplets gathering on
the fin surface. As a result, the droplets roll
off the fin surfaces, delaying the point when
frost forms on the coil surface during heat-
ing operation. This coating also makes it
possible to easily clean the outdoor unit coil
using a mild soap.
Other Features
•Inverter Variable Speed Compressor
•Jet Cool/Jet Heat
•Dehumidifying Mode
•Plasma filter
•Chaos Wind
•Auto restart
•Auto operation
•Self-cleaning indoor coil
•Smaller Footprint
•Precision Load Matching
•Meets AHRI 210/240
PRODUCT DATA | 9
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
UNIT NOMENCLATURE
Single Zone Wall Mount Indoor and Outdoor Units
LA
N 090 HSV 2
Generation
2 = Second
3 = Third
Indoor/Outdoor Product
HEV = Mega
HYV = Art Cool Premier
HVP = Art Cool Gallery
HSV = High Efficiency
HSV2 = Art Cool Mirror
HV = Standard
Nominal Capacity
(Nominal cooling capacity in Btu/h)
090/091 = 9,000
120/121 = 12,000
180/181 = 18,000
240 = 24,000
307 = 30,000
360 = 36,000
Type
N = Indoor Wall Mount Unit
U = Outdoor Heat Pump Unit
Family
LA= Art Cool Premier/ Gallery / Mirror
LS= High Efficiency Wall Mount / Standard/ Mega
10 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
GENERAL DATA
Art Cool Mirror Pairing Table
The following table shows the available outdoor and indoor units, along with the factory provided controller.
Table 1: Single Zone Art Cool Mirror Pairing Table
Outdoor Unit Model/ Btu/h Indoor Unit Model/ Btu/h Controller
LAU090HSV2 / 9,000
LAU120HSV2 / 12,000
LAN090HSV2 / 9,000
LAN120HSV2 / 12,000
AKB73635606
LAU180HSV2 / 18,000
LAU240HSV2/ 24,000
LAN180HSV2 / 18,000
LAN240HSV2 / 24,000
AKB73635606
PRODUCT DATA | 11
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
GENERAL DATA
Art Cool Mirror Inverter Specications
Table 2: Unit General Data
Type Art Cool Mirror
System (Model) LA090HSV2 (LAN090HSV2/LAU090HSV2) LA120HSV2 (LAN120HSV2/LAU120HSV2)
Nominal Cooling Capacity (Btu/h) 9,000 11,200
Cooling Power Input
1
(kW) 0.68 0.90
Nominal Heating Capacity (Btu/h) 10,800 13,300
Heating Power Input
1
(kW) 0.70 1.00
Cooling COP 3.90 3.66
EER 13.3 12.5
SEER 20
HSPF 11
Power Supply (V / Hz / Ø) 208-230/60/1
ODU Operating Range
Cooling (°F DB) 14-118
Heating (°F WB) 5-75
IDU Operating Range
Cooling (°F WB) 64-90
Heating (°F DB) 60-86
Indoor Temperature Setting Range
Cooling (°F) 65-86
Heating (°F) 61-86
Unit Data
Refrigerant Type
2
R410A
Refrigerant Control EEV
IDU Sound Pressure
3
dB(A) (H/M/L) 38/33/24 39/33/24
ODU Sound Pressure dB(A) 45
Unit Weight (lbs)
Indoor Unit (Net/Shipping) 25/30
Outdoor Unit (Net/Shipping) 78/82
Power/Communication Cable
4
(No. x AWG) 4 x 18
Fan
Indoor Type (Qty) Cross Flow (1)
Outdoor Type (Qty) Propeller (1)
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
Indoor - H/M/L (CFM) 335/272/212
353/272/212
Outdoor - Max (CFM) 1,165
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
Power wiring is field supplied and must comply with the applicable local and national codes.
This unit comes with a dry helium charge.
This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level
difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet
bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet
bulb (WB); and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
1
Power Input is rated at high speed.
2
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy
R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608
of CAA.
3
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4
All power/communication cables to be minimum 18 AWG, 4-conductor, stranded, shielded and must
comply with applicable and national code.
12 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
LAU090HSV2, LAU120HSV2
GENERAL DATA
Type Art Cool Mirror
System (Model) LA090HSV2 (LAN090HSV2/LAU090HSV2) LA120HSV2 (LAN120HSV2/LAU120HSV2)
Piping
Liquid Line (in, OD) 1/4
Vapor Line (in, OD) 3/8
Condensation Line (OD | ID) 27/32 | 5/8
Additional Refrigerant Charge (oz/ft) 0.22
Max Pipe Length (ft)
5
65.6
Piping Length (no add’l refrigerant, ft)
5
41
Max Elevation Difference (ft) 32.8
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
Power wiring is field supplied and must comply with the applicable local and national codes.
This unit comes with a dry helium charge.
This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level
difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet
bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet
bulb (WB); and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
5
Piping lengths are equivalent.
Table 2: Unit General Data (Continued)
PRODUCT DATA | 13
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
GENERAL DATA
Art Cool Mirror Inverter Specications
Type Art Cool Mirror
System (Model) LA180HSV2 (LAN180HSV2/LAU180HSV2) LA240HSV2 (LAN240HSV2/LAU240HSV2)
Nominal Cooling Capacity (Btu/h) 18,200 22,000
Cooling Power Input
1
(kW) 1.45 2.04
Nominal Heating Capacity (Btu/h) 22,000 27,600
Heating Power Input
1
(kW) 1.76 2.67
Cooling COP 3.69 3.16
EER 12.6 10.8
SEER 20.5 20
HSPF 9.7 10
Power Supply (V / Hz / Ø) 208-230/60/1
ODU Operating Range
Cooling (°F DB) 14-118
Heating (°F WB) 5-75
IDU Operating Range
Cooling (°F WB) 64-90
Heating (°F DB) 60-86
Indoor Temperature Setting Range
Cooling (°F) 65-86
Heating (°F) 61-86
Unit Data
Refrigerant Type
2
R410A
Refrigerant Control EEV
IDU Sound Pressure
3
dB(A) (H/M/L) 45/40/35
ODU Sound Pressure dB(A) 53
Unit Weight (lbs)
Indoor Unit (Net/Shipping) 38/42
Outdoor Unit (Net/Shipping) 133/142
Power/Communication Cable
4
(No. x AWG) 4 x 18
Fan
Indoor Type (Qty) Cross Flow (1)
Outdoor Type (Qty) Propeller (1)
Motor/Drive Brushless Digitally Controlled/Direct
Airflow Rate
Indoor - H/M/L (CFM)
622/509/399 632/526/399
Outdoor - Max (CFM) 2,119
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
Power wiring is field supplied and must comply with the applicable local and national codes.
This unit comes with a dry helium charge.
This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level
difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet
bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet
bulb (WB); and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
1
Power Input is rated at high speed.
2
Take appropriate actions at the end of HVAC equipment life to recover, recycle, reclaim or destroy
R410A refrigerant according to applicable regulations (40 CFR Part 82, Subpart F) under section 608
of CAA.
3
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
4
All power/communication cables to be minimum 18 AWG, 4-conductor, stranded, shielded and must
comply with applicable and national code.
Table 2: Unit General Data (Continued)
14 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Type Art Cool Mirror
System (Model) LA180HSV2 (LAN180HSV2/LAU180HSV2) LA240HSV2 (LAN240HSV2/LAU240HSV2)
Piping
Liquid Line (in, OD) 3/8
Vapor Line (in, OD) 5/8
Condensation Line (OD | ID) 27/32 | 5/8
Additional Refrigerant Charge (oz/ft) 0.38
Max Pipe Length (ft)
5
98.4
Piping Length (no add’l refrigerant, ft)
5
24.6
Max Elevation Difference (ft) 49.2
EEV: Electronic Expansion Valve IDU: Indoor Unit ODU: Outdoor Unit
Power wiring is field supplied and must comply with the applicable local and national codes.
This unit comes with a dry helium charge.
This data is rated 0 ft above sea level, with 24.6 ft of refrigerant line per indoor unit and a 0 ft level
difference between outdoor and indoor units.
Cooling capacity rating obtained with air entering the indoor coil at 80ºF dry bulb (DB) and 67ºF wet
bulb (WB); and outdoor ambient conditions of 95ºF dry bulb (DB) and 75ºF wet bulb (WB).
Heating capacity rating obtained with air entering the indoor unit at 70ºF dry bulb (DB) and 60ºF wet
bulb (WB); and outdoor ambient conditions of 47ºF dry bulb (DB) and 43ºF wet bulb (WB).
5
Piping lengths are equivalent.
Table 2: Unit General Data (Continued)
Unit Model Nos.
Nom.
Tons
Compressor Qty
Compressor(A)
Cool/Heat
Fan Qty ODU Fan(A) MCA(A) MOP(A)
Art Cool Mirror
LAU090HSV2 3/4 1 6.8/7.6 1 0.45 10 15
LAU120HSV2 1 1 6.8/7.6 1 0.45 10 15
LAU180HSV2 1 1/2 1 14.6 1 0.75 19 30
LAU240HSV2 2 1 14.6 1 0.75 19 30
Table 3: 208-230V, 60Hz, 1-Phase Single Zone Art Cool Mirror Outdoor Electrical Data Table
For component model nos.
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
MCA = Minimum Circuit Ampacity.
Maximum Overcurrent Protection (MOP) is calculated as follows:
(Largest motor FLA x 2.25) + (Sum of other motor FLA) rounded down
to the nearest standard fuse size.
GENERAL DATA AND ELECTRICAL DATA
PRODUCT DATA | 15
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
LAU090HSV2, LAU120HSV2
OUTDOOR UNIT DIMENSIONS
30-5/16
22
4-3/16
13-29/32
6-3/32
2-3/32
10-29/32
1
20-29/32
21-1/2
10-1/2
2- 13/16
8-3/32
4
3
2
5
11- 5/16
18 -5/16
Unit: inch
Discharge Air Grille
16 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
LAU180HSV2, LAU240HSV2
OUTDOOR UNIT DIMENSIONS
34-1/4
21-1/2
12-19/32
14-3/16
6-5/16
2-3/16
13-3/32
12-19/32
31-1/2
30-13/16
15-13/32
3-3/32
2
20-29/32
Item No. Part Name Remark
1
2
3
4
5
6
Unit: inch
Discharge Air Grille
PRODUCT DATA | 17
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
INDOOR UNIT DIMENSIONS
LAN090HSV2, LAN120HSV2
2-3/4
2-9/16
5-3/16
3-11/16
Right rear piping
Left rear piping
Installation Plate
Place a level on raised tab
Unit Outline
8-1/2
6-29/32
17-13/32
34-13/16
8-1/16
1-3/4
11-1/4
1-31/32
17-13/32
1-3/4
2-5/32
2-13/32
3
2
1
4
5
Unit: inch
Front Panel
Return Air Grille
18 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
INDOOR UNIT DIMENSIONS
LAN180HSV2, LAN240HSV2
3
2
1
2-3/4
2-3/4
2-11/16
2-3/16
Right rear
piping
Left rear
piping
Installation Plate
Measuring Tape
Measuring Tape
Hanger
Place a level on raised tab
Unit Outline
8-3/32
4-3/32
18-3/32 22-13/32
40-9/16
9-11/16
1-13/16
12-13/16
2-1/32
4
1-13/16
2-17/32
2-1/32
Unit: inch
Front Panel
Return Air Grille
PRODUCT DATA | 19
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
ACOUSTIC DATA
Figure 1: LAN090HSV2/LAN120HSV2
Sound Pressure Levels
Figure 2: LAN180HSV2/LAN240HSV2
Figure 3: LAU090HSV2/LAU120HSV2
Figure 4: LAU180HSV2/LAU240HSV2
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Sound Pressure Level (0dB = 20μPa)
Octave Band Center Frequency (Hz)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ASNW123BRM9(LAN120HSV2 )
Octave Band Sound Pressure Level (0dB = 20μPa)
Octave Band Center Frequency (Hz)
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
NC-25
NC-3 0
NC-3 5
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
ASNW243CRM9(LAN240HSV2 )
10
20
30
40
50
60
70
80
63 125 250 500 1000 2000 4000 8000
Octave Band Center Frequency (Hz)
Octave Band Sound Pressure Level (0dB = 20μPa)
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
Octave Band Sound Pressure Level (0dB = 20μPa)
10
20
30
40
50
60
70
80
Octave Band Center Frequency (Hz)
63 125 250 500 1000 2000 4000 8000
NC-15
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
NC-55
NC-60
NC-65
Approximate
Hearing
Threshold
20 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
REFRIGERANT FLOW DIAGRAMS
LAN090HSV2, LAU090HSV2
LAN120HSV2, LAU120HSV2
Indoor Unit Outdoor Unit
Heat
Exchanger
(Evaporator)
Heat
Exchanger
(Condenser)
Compressor
Accumulator
Gas Side
3-Way Valve
2-Way Valve
Liquid Side
Cooling
Heating
Reversing Valve
EEV
Th1
Th5
Th2
Th6
Th3
Th4
LOC. DescriptionPCB Connector
Th1 CN-TH1(Indoor)
Th2 CN-TH2 (Indoor)
Th3 CN-TH3 (Indoor)
Th4 CN-TH2 (Outdoor)
Th5
CN-TH1(Outdoor)
Th6
Indoor air temperature thermistor
Evaporator middle temperature thermistor
Discharge pipe temperature thermistor
Heat exchanger temperature thermistor
Outdoor air temperature thermistor
Water level sensor (Option)
PRODUCT DATA | 21
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
LAN180HSV2, LAU180HSV2
LAN240HSV2, LAU240HSV2
REFRIGERANT FLOW DIAGRAMS
Indoor Unit Outdoor Unit
Heat
Exchanger
(Evaporator)
Heat
Exchanger
(Condenser)
Compressor
Accumulator
Gas Side
3-Way Valve
2-Way Valve
Liquid Side
Cooling
Heating
Reversing Valve
EEV
Th1
Th5
Th2
Th6
Th3
Th4
LOC. Descriptio
nP
CB Connector
Th1 Indoor air temperature thermistor
Evaporator inlet temperature thermistor
Evaporator outlet temperature thermistor + Water level sensor
CN-TH1 (Indoor)
Th2
Th3 CN-TH2 (Indoor)
Th4 Evaporator middle temperature thermistor CN-TH3 (Indoor)
Th5 Discharge pipe temperature thermistor
CN-TH3 (Outdoor)
Th6 Suction pipe temperature thermistor
Th7 Heat exchanger temperature thermistor
CN-TH2 (Outdoor)
Th8 Outdoor air temperature thermistor
Th9 Heat exchanger middle temperature thermistor CN-TH4 (Outdoor)
22 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
WIRING DIAGRAM
LAN090HSV2, LAN120HSV2
Factory Wiring
Field Wiring
PRODUCT DATA | 23
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
WIRING DIAGRAM
LAN180HSV2, LAN240HSV2
Factory Wiring
Field Wiring
24 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
WIRING DIAGRAM
LAU090HSV2, LAU120HSV2
Factory Wiring
Field Wiring
PRODUCT DATA | 25
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
WIRING DIAGRAM
LAU180HSV2, LAU240HSV2
Factory Wiring
Field Wiring
26 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Table 4:Optional Zone Controllers
Zone Controller Name Model No.
Case
Color
Max. Wire
Length (ft.)
Description
Simple Controller with
Mode Selection
PQRCVCL0Q Black
164
Allows control of indoor unit ON / OFF,
operation mode, fan speed, and temperature
setpoint.
PQRCVCL0QW White
Simple Controller without
Mode Selection
PQRCHCA0Q Black
164
Allows control of indoor unit ON / OFF, fan
speed, and temperature setpoint.
PQRCHCA0QW White
LG Programmable
Thermostat
PREMTB10U White 164
Allows control of indoor unit ON / OFF, operation
mode, occupied / unoccupied temperature
setpoints, fan speed, and airflow direction.
Programmable schedule with five events per
day..
Before specifying or placing an order, refer to the V-Net Network Solutions Engineering Product Data Book, and review the detailed technical data provided to fully understand the capabilities and limitations of
these devices.
Table 5: Summary Data - Zone Controller Communication Cables
Before specifying or placing an order, refer to the V-Net Network Solutions Engineering Product Data Book, and review the detailed technical data provided to fully understand the capabilities and limitations of
these devices.
Communication Cable Name Model No.
Max. Wire
Length (ft.)
Description
Wired Remote / Group Control
Extension Cable
PZCWRC1 32
Increases the distance between a remote controller
and an indoor unit, or between indoor units in a control
group.
ACCESSORIES
PRODUCT DATA | 27
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
ACCESSORIES
Table 6: Summary Data—Specialty Application Devices
Specialty Application
Device
Name Model No.
Connects
To
Application
Binary Signals
Input / Output
Description
Dry Contact Unit
24 VAC
PQDSB1
Indoor Unit
ON / OFF, Run Status,
Error Status
1 / 2
Enables the indoor unit to be
controlled and monitored by
third-party controls using
binary inputs and outputs.
Dry Contact Unit
for Setback
PQDSBC
ON / OFF, Mode,
Controller Lock,
Power Save, Run
Status, Error Status
2 / 2
Dry Contact Unit
for Thermostat
PQDSBNGCM1
ON / OFF, Thermo
ON / OFF, Mode, Fan
Speed, Run Status,
Error Status
—
Enables the indoor unit to be
controlled and monitored by a
third-party thermostat or
controller.
PI-485 V-net
Control
Integration
Board
1
PMNFP14A0
Outdoor
Unit
— —
Control integration to LG V-net
controls (AC Smart Premium,
ACP,
BACnet, LonWorks, etc.)
Digital Output
(DO) Kit
PQNFP00T0 Comm. BUS ON / OFF 0 / 1
One 25A DPST normally open
relay. Used with central
controller to control third-party
device manually or by
schedule.
Before specifying or placing an order, refer to the V-Net Network Solutions Engineering Product Data Book, and
review the detailed technical data provided to fully understand the capabilities and limitations of these devices.
1
PI-485 is only available for LAU180HSV2 and LAU240HSV2.
28 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Table 7: Summary Data—Central Controllers (Connect to the Outdoor Unit Terminals Internet A, Internet B).
Central Controller Name Model No.
Devices
per
Controller
Systems
per
Comm.
BUS
Devices
per Comm.
BUS
No. of
Comm.
BUS
ports
Binary
Signals
Input /
Output
Power /
Connection
Description
AC Smart
Premium
PQCSW421E0A 128 16 128 1
2 DI /
2 DO
24 VAC
Provides for scheduling,
auto-changeover, setback,
remote controller lock,
setpoint range limit, run
time limit, web access,
email alarm notification,
visual floorplan navigation,
peak/demand control,
software device interlocking,
PDI integration, and AC
Manager Plus integration
advanced functionality in
addition to basic unit control
and monitoring.
AC Ez PQCSZ250S0 32 16 256 1 —
12 VDC /
Outdoor
Unit
Provides for scheduling in
addition to basic indoor unit
control and monitoring.
Advanced Control
Platform (ACP)
Standard
PQCPC22N1 256 16
64 (128
with PDI
Premium)
4
2 / 2 24 VAC
Provides for scheduling,
remote controller lock, setpoint
range limit, web access, peak
/ demand control, PDI
integration, and AC Manager
Plus integration advanced
functionality in addition to
basic unit control and
monitoring.
Advanced Control
Platform (ACP)
Premium
PQCPC22A1 256 16
64 (128
with PDI
Premium)
10 / 4 24 VAC
Table 8: Summary Data—Integration Solutions (Connect to Outdoor Unit Terminals Internet A, Internet B).
Central Controller Name Model No.
Devices
per
Controller
Systems
per
Comm.
BUS
Devices
per Comm.
BUS
No. of
Comm.
BUS
ports
Binary
Signals
Input /
Output
Power /
Connection
Description
BACnet
®
Gateway PQNFB17C1 256 16
64 (128
with PDI
Premium)
4 2 / 2 24 VAC
Allow integration of LG
equipment for control
and monitoring by open
protocol BACnet and
LonWorks building
automation and controls
systems.
LonWorks
®
Gateway PLNWKB100 64 16
64 (128
with PDI
Premium)
1 2 / 2 24 VAC
Before specifying or placing an order, refer to the V-Net Network Solutions Engineering Product Data Book, and review the detailed technical data provided to fully understand the capabilities and limitations of
these devices.
Before specifying or placing an order, refer to the V-Net Network Solutions Engineering Product Data Book, and review the detailed technical data provided to fully understand the capabilities and limitations of
these devices.
ACCESSORIES
Table 7 and Table 8 contain accessories applicable to only LAU180HSV2 and LAU240HSV2. Using the PI-485 Control Integration Board will
allow communication to the devices below.
PRODUCT DATA | 29
Product Data
Due to our policy of continuous product innovation, some specications may change without notication.
ACCESSORIES
•Actual inverter compressor speed
•Target inverter compressor speed
•Actual outdoor fan speed
•Target outdoor unit fan speed
•Actual superheat
•Inverter compressor current value
•Outdoor air temperature
•Actual high pressure/saturation temperature
•Actual low pressure/saturation temperature
•Suction temperature
•Inverter compressor discharge temperature
•Outdoor coil pipe temperature
•Liquid line pipe temperature
•Inverter compressor operation indicator light
•Four-way reversing valve operation
indicator light
•Pressure graph showing actual low pres-
sure and actual high pressure levels
•Error code display
•Operating mode indicator
•Total number of connected indoor units (for
multi zone systems)
•Communication indicator lights
•Unit error code
•Indoor unit capacity
•Indoor unit operating mode
•Indoor unit fan speed
•Indoor unit room temperature
•Indoor unit inlet pipe temperature
•Indoor unit outlet pipe temperature
LG Monitoring View (LGMV) Diagnostic Software and Cable
LGMV software allows the service technician or commissioning agent to connect a computer
USB port to the outdoor unit main printed circuit board (PCB) using an accessory cable with-
out the need for a separate interface device. The main screen for LGMV allows the user to
view the following real time data on one screen:
Additional information that can be gathered from the main screen:
1. Graph: Graphic shows the following:
•Compressors showing actual speeds
•EEVs
•IDUs
•Low and high pressures
•Temperature sensors
•Four-way reversing valve
•Outdoor fans showing status and speeds
2. Setting: Converts metric values to imperial values.
3. Making Data: Recording of real time data to a separate file created to be stored on the
user’s computer.
4. Loading Data: Recorded data from a saved “.CSV” file can be loaded to create an
LGMV session.
5. Electrical Data: The lower half of main screen is changed to show the following:
Figure 5: MV Diagnostic Screen
•Inverter compressor
- Amps
- Volts
- Power Hz
- Inverter control board fan Hz
30 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
ACCESSORIES
The software is available in a high version with all of the features listed above.
The low version has all features as the high version without Target High Pres-
sure and Target Low Pressure values shown on main screen.
In lieu of connecting to the ODU, user has the option to connect to IDU with the
use of a USB to RS-485 connector kit. When connected through IDU, user will
not be able to record data.
This software can be used to both commission new systems and troubleshoot
existing systems. LGMV data can be recorded to a “.CSV” file and emailed to
an LG representative to assist with diagnostic evaluations.
Recommended Minimum PC Configuration:
•CPU: Pentium
®
IV 1.6 GHz
•Operating System: Windows
®
NT/2000/XP/Vista
•Main Memory: 256 MB
•Hard Disk: 600 MB when
operating
•Web Browser: Internet
Explorer
®
5.0
LG Monitoring View (LGMV) Diagnostic Software and Cable - Continued
Figure 6: MV Diagnostic Screen - High Version
32 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
Cooling Capacity
PERFORMANCE DATA
DB = Dry Bulb Temperature (°F)
WB = Wet Bulb Temperature (°F)
TC = Total Capacity (kBtu/h).
SC = Sensible Capacity (kBtu/h)
PI = Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor).
Outdoor
air temp.
(°F DB)
Indoor Air Temp. °F DB/°F WB
64/53 68/57 72/61 77/64 80/67 86/72 90/75
TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI
14 5.51 4.83 0.29 5.92 5.19 0.30 6.33 5.56 0.31 6.75 5.92 0.31 6.94 6.08 0.32 7.57 6.64 0.34 7.99 7.00 0.35
23 5.92 5.00 0.29 6.36 5.38 0.29 6.80 5.75 0.30 7.24 6.13 0.31 7.45 6.30 0.32 8.13 6.88 0.34 8.57 7.25 0.35
59 7.10 5.37 0.33 7.63 5.78 0.34 8.16 6.18 0.35 8.69 6.58 0.36 8.94 6.77 0.37 9.75 7.39 0.39 10.29 7.79 0.40
70 8.10 6.60 0.49 8.64 7.04 0.50 9.18 7.47 0.52 9.54 7.77 0.53 9.81 7.99 0.55 10.53 8.57 0.57 11.25 9.16 0.59
75 8.00 6.62 0.50 8.54 7.07 0.52 9.08 7.52 0.53 9.45 7.83 0.55 9.72 8.05 0.56 10.40 8.61 0.59 11.16 9.24 0.60
80 7.79 6.56 0.52 8.33 7.02 0.54 8.87 7.47 0.55 9.27 7.81 0.57 9.63 8.11 0.59 10.26 8.64 0.61 10.98 9.25 0.63
85 7.58 6.59 0.56 8.12 7.06 0.57 8.66 7.52 0.59 9.09 7.90 0.61 9.45 8.21 0.63 10.13 8.80 0.65 10.82 9.40 0.67
90 7.37 6.63 0.58 7.91 7.12 0.60 8.45 7.60 0.62 8.91 8.01 0.64 9.27 8.34 0.66 9.99 8.99 0.68 10.60 9.53 0.70
95 7.15 6.66 0.60 7.68 7.15 0.62 8.22 7.65 0.64 8.75 8.15 0.66 9.00 8.38 0.68 9.83 9.15 0.70 10.36 9.65 0.73
100 6.96 6.55 0.61 7.50 7.05 0.63 8.03 7.56 0.65 8.57 8.06 0.67 8.88 8.36 0.69 9.64 9.07 0.72 10.17 9.57 0.74
105 6.77 6.44 0.62 7.31 6.95 0.64 7.84 7.46 0.66 8.38 7.97 0.68 8.77 8.34 0.70 9.45 8.99 0.73 9.99 9.50 0.75
110 6.59 6.38 0.63 7.12 6.90 0.65 7.66 7.42 0.67 8.19 7.94 0.69 8.58 8.31 0.71 9.26 8.98 0.74 9.80 9.49 0.76
115 6.40 6.26 0.63 6.94 6.79 0.65 7.47 7.31 0.67 8.01 7.83 0.69 8.39 8.21 0.71 9.08 8.88 0.74 9.61 9.41 0.77
118 6.21 6.12 0.64 6.75 6.65 0.66 7.20 7.10 0.68 7.74 7.63 0.70 8.10 7.98 0.72 8.78 8.65 0.75 9.27 9.14 0.77
122 5.92 5.84 0.64 6.42 6.35 0.66 6.93 6.85 0.68 7.44 7.35 0.70 7.80 7.71 0.72 8.45 8.35 0.75 8.96 8.85 0.78
Outdoor
air temp.
(°F DB)
Indoor Air Temp. °F DB/°F WB
64/53 68/57 72/61 77/64 80/67 86/72 90/75
TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI
14 6.86 6.01 0.38 7.37 6.46 0.39 7.88 6.91 0.40 8.40 7.36 0.42 8.63 7.57 0.43 9.42 8.26 0.45 9.94 8.71 0.46
23 7.36 6.23 0.38 7.91 6.69 0.39 8.46 7.16 0.40 9.01 7.63 0.41 9.27 7.84 0.43 10.12 8.56 0.44 10.67 9.03 0.46
59 8.83 6.69 0.44 9.49 7.19 0.45 10.16 7.69 0.46 10.82 8.19 0.48 11.12 8.42 0.49 12.14 9.19 0.51 12.80 9.69 0.53
70 10.08 8.21 0.64 10.75 8.75 0.66 11.42 9.30 0.68 11.87 9.67 0.70 12.21 9.94 0.73 13.10 10.67 0.76 14.00 11.40 0.78
75 9.95 8.24 0.66 10.63 8.80 0.68 11.30 9.36 0.70 11.76 9.74 0.72 12.10 10.02 0.75 12.94 10.71 0.78 13.89 11.50 0.80
80 9.69 8.16 0.69 10.36 8.73 0.71 11.04 9.30 0.73 11.54 9.72 0.76 11.98 10.10 0.78 12.77 10.76 0.81 13.66 11.51 0.84
85 9.43 8.20 0.74 10.10 8.78 0.76 10.77 9.36 0.78 11.31 9.83 0.81 11.76 10.22 0.83 12.60 10.95 0.87 13.46 11.70 0.89
90 9.17 8.25 0.77 9.84 8.85 0.79 10.51 9.46 0.82 11.09 9.97 0.84 11.54 10.38 0.87 12.43 11.18 0.90 13.19 11.87 0.93
95 8.90 8.28 0.79 9.56 8.90 0.82 10.23 9.52 0.84 10.89 10.14 0.87 11.20 10.43 0.90 12.23 11.38 0.93 12.89 12.00 0.96
100 8.66 8.15 0.81 9.33 8.78 0.83 10.00 9.40 0.86 10.66 10.03 0.88 11.05 10.40 0.91 11.99 11.29 0.95 12.66 11.91 0.98
105 8.43 8.02 0.82 9.10 8.65 0.85 9.76 9.28 0.87 10.43 9.92 0.90 10.91 10.37 0.93 11.76 11.18 0.96 12.43 11.82 0.99
110 8.20 7.94 0.83 8.86 8.59 0.85 9.53 9.23 0.88 10.20 9.88 0.91 10.68 10.35 0.94 11.53 11.17 0.97 12.19 11.82 1.00
115 7.96 7.79 0.84 8.63 8.45 0.86 9.30 9.10 0.89 9.96 9.75 0.92 10.44 10.22 0.95 11.30 11.05 0.98 11.96 11.70 1.01
118 7.73 7.62 0.84 8.40 8.28 0.87 8.96 8.83 0.90 9.63 9.49 0.93 10.08 9.94 0.95 10.92 10.76 0.99 11.54 11.37 1.02
122 7.36 7.27 0.85 7.99 7.90 0.87 8.62 8.52 0.90 9.25 9.14 0.93 9.71 9.59 0.96 10.51 10.39 1.00 11.14 11.01 1.03
LAN090HSV2/LAU090HSV2
LAN120HSV2/LAU120HSV2
1. All capacities are net, evaporator fan motor heat is deducted.
2. Grey shading Indicates reference data. When operating at this temperature, these
values can be different by discontinuous operation.
3. Direct interpolation is permissible. Do not extrapolate
4. Capacities are based on the following conditions:
- Interconnecting Piping Length 24.6 ft
- Level Difference of Zero.
- Indoor Air Temperature
:80°F (26.7°C) DB / 67°F (19.4°C) WB
- Outdoor Air Temperature
:95°F (35.0°C) DB / 75°F (23.9°C) WB
PRODUCT DATA | 33
Performance Data
Due to our policy of continuous product innovation, some specications may change without notication.
Outdoor
air temp.
(°F DB)
Indoor Air Temp. °F DB/°F WB
64/53 68/57 72/61 77/64 80/67 86/72 90/75
TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI
14 11.14 9.77 0.62 11.98 10.50 0.63 12.81 11.23 0.65 13.64 11.97 0.67 14.03 12.30 0.70 15.31 13.43 0.72 16.15 14.16 0.74
23 11.96 10.12 0.61 12.86 10.88 0.63 13.75 11.64 0.65 14.65 12.39 0.67 15.06 12.74 0.69 16.44 13.91 0.72 17.34 14.67 0.74
59 14.35 10.87 0.71 15.43 11.68 0.73 16.50 12.50 0.75 17.58 13.31 0.77 18.07 13.68 0.80 19.73 14.94 0.83 20.80 15.75 0.85
70 16.38 13.34 1.04 17.47 14.23 1.07 18.56 15.12 1.11 19.29 15.71 1.14 19.84 16.15 1.18 21.29 17.34 1.22 22.75 18.52 1.26
75 16.17 13.39 1.07 17.27 14.30 1.10 18.36 15.21 1.14 19.11 15.83 1.17 19.66 16.28 1.21 21.02 17.41 1.26 22.57 18.69 1.29
80 15.75 13.27 1.12 16.84 14.19 1.15 17.93 15.11 1.19 18.75 15.79 1.22 19.47 16.41 1.26 20.75 17.48 1.31 22.20 18.70 1.35
85 15.33 13.32 1.19 16.42 14.27 1.23 17.51 15.22 1.27 18.38 15.97 1.31 19.11 16.61 1.35 20.48 17.79 1.40 21.87 19.01 1.44
90 14.91 13.41 1.25 16.00 14.39 1.28 17.08 15.37 1.32 18.02 16.21 1.36 18.75 16.86 1.41 20.20 18.17 1.46 21.44 19.28 1.51
95 14.46 13.46 1.28 15.54 14.47 1.32 16.62 15.48 1.36 17.70 16.48 1.41 18.20 16.95 1.45 19.87 18.50 1.51 20.95 19.51 1.55
100 14.08 13.25 1.31 15.16 14.26 1.35 16.24 15.28 1.39 17.32 16.30 1.43 17.96 16.90 1.47 19.49 18.34 1.53 20.57 19.36 1.58
105 13.70 13.03 1.33 14.78 14.06 1.37 15.86 15.09 1.41 16.95 16.12 1.45 17.73 16.86 1.50 19.11 18.17 1.56 20.19 19.20 1.61
110 13.32 12.91 1.34 14.40 13.96 1.38 15.49 15.00 1.43 16.57 16.05 1.47 17.35 16.81 1.52 18.73 18.15 1.58 19.82 19.20 1.62
115 12.94 12.66 1.35 14.02 13.72 1.40 15.11 14.78 1.44 16.19 15.84 1.48 16.97 16.61 1.53 18.35 17.96 1.59 19.44 19.02 1.64
118 12.56 12.38 1.37 13.65 13.45 1.41 14.56 14.35 1.45 15.65 15.43 1.50 16.38 16.14 1.54 17.75 17.49 1.61 18.75 18.48 1.65
122 11.96 11.82 1.37 12.99 12.83 1.42 14.01 13.84 1.46 15.04 14.86 1.50 15.78 15.59 1.55 17.09 16.88 1.61 18.11 17.89 1.66
Outdoor
air temp.
(°F DB)
Indoor Air Temp. °F DB/°F WB
64/53 68/57 72/61 77/64 80/67 86/72 90/75
TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI TC SC PI
14 13.47 11.81 0.87 14.48 12.69 0.89 15.49 13.58 0.92 16.49 14.46 0.95 16.96 14.87 0.98 18.51 16.23 1.02 19.52 17.12 1.05
23 14.46 12.23 0.86 15.54 13.15 0.89 16.62 14.06 0.92 17.71 14.98 0.94 18.20 15.40 0.97 19.87 16.81 1.01 20.96 17.73 1.04
59 17.35 13.14 0.99 18.65 14.12 1.02 19.95 15.11 1.06 21.25 16.09 1.09 21.84 16.54 1.12 23.85 18.06 1.17 25.14 19.04 1.20
70 19.80 16.12 1.46 21.12 17.20 1.51 22.44 18.27 1.56 23.32 18.99 1.60 23.98 19.53 1.65 25.74 20.96 1.72 27.50 22.39 1.77
75 19.55 16.19 1.51 20.87 17.29 1.55 22.20 18.38 1.60 23.10 19.13 1.65 23.76 19.68 1.70 25.41 21.04 1.77 27.28 22.59 1.82
80 19.03 16.04 1.57 20.36 17.15 1.62 21.68 18.26 1.67 22.66 19.09 1.72 23.54 19.83 1.77 25.08 21.13 1.85 26.84 22.61 1.90
85 18.53 16.10 1.68 19.85 17.25 1.73 21.16 18.39 1.79 22.22 19.31 1.84 23.10 20.07 1.90 24.75 21.51 1.97 26.44 22.98 2.03
90 18.02 16.21 1.75 19.34 17.39 1.81 20.65 18.58 1.86 21.78 19.59 1.92 22.66 20.38 1.98 24.42 21.97 2.06 25.91 23.31 2.12
95 17.47 16.27 1.81 18.78 17.49 1.86 20.09 18.71 1.92 21.40 19.93 1.98 22.00 20.48 2.04 24.02 22.36 2.12 25.33 23.58 2.19
100 17.02 16.01 1.84 18.33 17.24 1.89 19.63 18.47 1.95 20.94 19.70 2.01 21.71 20.43 2.07 23.56 22.17 2.16 24.87 23.40 2.22
105 16.56 15.75 1.87 17.87 16.99 1.92 19.18 18.24 1.98 20.48 19.48 2.05 21.43 20.38 2.11 23.10 21.97 2.19 24.41 23.21 2.26
110 16.10 15.60 1.89 17.41 16.87 1.95 18.72 18.14 2.01 20.03 19.40 2.07 20.97 20.32 2.13 22.64 21.94 2.22 23.95 23.21 2.28
115 15.64 15.31 1.91 16.95 16.59 1.96 18.26 17.87 2.03 19.57 19.15 2.09 20.52 20.07 2.15 22.19 21.71 2.24 23.50 22.99 2.31
118 15.18 14.96 1.92 16.50 16.26 1.98 17.60 17.35 2.04 18.92 18.65 2.11 19.80 19.52 2.17 21.45 21.14 2.26 22.66 22.33 2.33
122 14.46 14.29 1.93 15.70 15.51 1.99 16.94 16.73 2.05 18.18 17.96 2.12 19.07 18.84 2.18 20.65 20.41 2.27 21.89 21.63 2.34
LAN180HSV2/LAU180HSV2
LAN240HSV2/LAU240HSV2
1. All capacities are net, evaporator fan motor heat is deducted.
2. Grey shading Indicates reference data. When operating at this temperature, these
values can be different by discontinuous operation.
3. Direct interpolation is permissible. Do not extrapolate
4. Capacities are based on the following conditions:
- Interconnecting Piping Length 24.6 ft
- Level Difference of Zero.
- Indoor Air Temperature
:80°F (26.7°C) DB / 67°F (19.4°C) WB
- Outdoor Air Temperature
:95°F (35.0°C) DB / 75°F (23.9°C) WB
Cooling Capacity
PERFORMANCE DATA
DB = Dry Bulb Temperature (°F)
WB = Wet Bulb Temperature (°F)
TC = Total Capacity (kBtu/h).
SC = Sensible Capacity (kBtu/h)
PI = Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor).
34 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
PERFORMANCE DATA
Heating Capacity
Outdoor Air
Temperature
Indoor Air Temp. °F DB/°F WB
60 64 68 70 72 75 86
(°F DB) (°F WB) TC PI TC PI TC PI TC PI TC PI TC PI TC PI
6 5 6.61 0.65 6.41 0.65 6.34 0.65 6.28 0.64 6.23 0.64 6.11 0.64 5.96 0.64
10 9 6.90 0.68 6.69 0.67 6.62 0.67 6.56 0.66 6.50 0.66 6.37 0.66 6.22 0.66
16 14 7.12 0.68 6.90 0.68 6.83 0.68 6.76 0.67 6.71 0.67 6.58 0.66 6.42 0.66
19 17 7.26 0.70 7.04 0.70 6.97 0.70 6.90 0.69 6.85 0.69 6.71 0.68 6.55 0.68
24 23 8.08 0.71 7.84 0.70 7.76 0.70 7.68 0.69 7.62 0.69 7.47 0.69 7.29 0.69
32 30 9.04 0.71 8.76 0.70 8.68 0.70 8.59 0.69 8.52 0.69 8.35 0.69 8.15 0.69
41 38 10.13 0.71 9.83 0.70 9.73 0.70 9.63 0.70 9.56 0.70 9.36 0.69 9.14 0.69
43 40 10.41 0.71 10.09 0.70 9.99 0.70 9.89 0.70 9.81 0.70 9.62 0.69 9.39 0.69
47 43 11.36 0.71 11.02 0.71 10.91 0.71 10.80 0.70 10.72 0.70 10.50 0.69 10.25 0.69
53 50 11.48 0.72 11.13 0.71 11.02 0.71 10.91 0.71 10.82 0.71 10.61 0.70 10.36 0.70
59 55 11.74 0.73 11.38 0.72 11.27 0.72 11.16 0.71 11.07 0.71 10.85 0.71 10.59 0.71
64 60 11.99 0.74 11.63 0.74 11.51 0.74 11.39 0.73 11.31 0.73 11.08 0.72 10.82 0.72
70 66 12.22 0.75 11.85 0.75 11.73 0.75 11.61 0.74 11.52 0.74 11.29 0.73 11.02 0.73
75 71 12.39 0.76 12.01 0.76 11.89 0.76 11.77 0.75 11.68 0.75 11.45 0.74 11.18 0.74
78 75 12.50 0.77 12.12 0.76 12.00 0.76 11.88 0.76 11.79 0.76 11.55 0.75 11.28 0.75
LAN090HSV2/LAU090HSV2
LAN120HSV2/LAU120HSV2
DB = Dry Bulb Temperature (°F)
WB = Wet Bulb Temperature (°F)
TC = Total Capacity (kBtu/h).
PI = Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor).
1. All capacities are net, evaporator fan motor heat is deducted.
2. Direct interpolation is permissible. Do not extrapolate
3. Capacities are based on the following conditions:
- Interconnecting Piping Length 24.6 ft
- Level Difference of Zero.
- Indoor Air Temperature
:70°F(21.1°C) DB / 60°F(15.6°C) WB
- Outdoor Air Temperature
: 47°F(8.3°C) DB / 43°F(6.1°C) WB
Outdoor Air
Temperature
Indoor Air Temp. °F DB/°F WB
60 64 68 70 72 75 86
(°F DB) (°F WB) TC PI TC PI TC PI TC PI TC PI TC PI TC PI
6 5 6.61 0.85 6.41 0.85 6.34 0.85 6.28 0.84 6.23 0.84 6.11 0.83 5.96 0.83
10 9 6.90 0.88 6.69 0.87 6.62 0.87 6.56 0.86 6.50 0.86 6.37 0.86 6.22 0.86
16 14 7.12 0.89 6.90 0.88 6.83 0.88 6.76 0.87 6.71 0.87 6.58 0.86 6.42 0.86
19 17 7.26 0.92 7.04 0.91 6.97 0.91 6.90 0.90 6.85 0.90 6.71 0.89 6.55 0.89
24 23 8.30 0.93 8.04 0.92 7.96 0.92 7.88 0.92 7.82 0.92 7.67 0.91 7.48 0.91
32 30 10.63 0.97 10.31 0.96 10.20 0.96 10.10 0.95 10.02 0.95 9.82 0.94 9.59 0.94
41 38 12.70 1.00 12.31 0.99 12.19 0.99 12.07 0.98 11.98 0.98 11.74 0.97 11.46 0.97
43 40 13.22 1.01 12.82 1.00 12.69 1.00 12.56 0.99 12.47 0.99 12.22 0.98 11.92 0.98
47 43 14.00 1.02 13.57 1.01 13.43 1.01 13.30 1.00 13.20 1.00 12.93 0.99 12.63 0.99
53 50 14.14 1.03 13.71 1.02 13.57 1.02 13.43 1.01 13.33 1.01 13.06 1.00 12.75 1.00
59 55 14.46 1.04 14.02 1.03 13.88 1.03 13.74 1.02 13.63 1.02 13.36 1.01 13.04 1.01
64 60 14.76 1.06 14.32 1.05 14.17 1.05 14.03 1.04 13.92 1.04 13.64 1.03 13.32 1.03
70 66 15.04 1.08 14.59 1.07 14.44 1.07 14.30 1.06 14.19 1.06 13.90 1.04 13.57 1.04
75 71 15.25 1.09 14.79 1.08 14.64 1.08 14.50 1.07 14.39 1.07 14.10 1.06 13.76 1.06
78 75 15.39 1.10 14.93 1.09 14.78 1.09 14.63 1.08 14.52 1.08 14.23 1.07 13.89 1.07
PRODUCT DATA | 35
Performance Data
Due to our policy of continuous product innovation, some specications may change without notication.
Outdoor Air
Temperature
Indoor Air Temp. °F DB/°F WB
60 64 68 70 72 75 86
(°F DB) (°F WB) TC PI TC PI TC PI TC PI TC PI TC PI TC PI
6 5 13.41 0.85 13.00 0.85 12.87 0.85 12.74 0.84 12.64 0.84 12.39 0.83 12.09 0.83
10 9 14.00 0.88 13.57 0.87 13.43 0.87 13.30 0.86 13.20 0.86 12.93 0.86 12.63 0.86
16 14 14.44 0.89 14.00 0.88 13.86 0.88 13.72 0.87 13.62 0.87 13.34 0.86 13.02 0.86
19 17 14.73 0.92 14.28 0.91 14.14 0.91 14.00 0.90 13.89 0.90 13.61 0.89 13.29 0.89
24 23 16.03 1.05 15.54 1.04 15.38 1.04 15.23 1.03 15.11 1.03 14.81 1.02 14.46 1.02
32 30 18.94 1.36 18.37 1.34 18.18 1.34 18.00 1.33 17.86 1.33 17.50 1.32 17.09 1.32
41 38 21.53 1.63 20.88 1.61 20.67 1.61 20.46 1.59 20.31 1.59 19.90 1.58 19.42 1.58
43 40 22.18 1.69 21.51 1.68 21.29 1.68 21.08 1.66 20.92 1.66 20.50 1.64 20.01 1.64
47 43 23.15 1.80 22.45 1.78 22.22 1.78 22.00 1.76 21.83 1.76 21.39 1.74 20.88 1.74
53 50 23.38 1.81 22.67 1.80 22.44 1.80 22.22 1.78 22.05 1.78 21.61 1.76 21.09 1.76
59 55 23.91 1.83 23.19 1.81 22.95 1.81 22.73 1.80 22.55 1.80 22.10 1.78 21.57 1.78
64 60 24.42 1.87 23.68 1.85 23.44 1.85 23.21 1.83 23.03 1.83 22.57 1.81 22.03 1.81
70 66 24.89 1.89 24.13 1.88 23.89 1.88 23.65 1.86 23.47 1.86 23.00 1.84 22.45 1.84
75 71 25.23 1.92 24.47 1.90 24.22 1.90 23.98 1.88 23.80 1.88 23.32 1.86 22.76 1.86
78 75 25.46 1.94 24.69 1.92 24.44 1.92 24.20 1.90 24.02 1.90 23.53 1.88 22.97 1.88
LAN180HSV2/LAU180HSV2
LAN240HSV2/LAU240HSV2
DB = Dry Bulb Temperature (°F)
WB = Wet Bulb Temperature (°F)
TC = Total Capacity (kBtu/h).
PI = Power Input (kW) (includes compressor, indoor fan motor and outdoor fan motor).
1. All capacities are net, evaporator fan motor heat is deducted.
2. Direct interpolation is permissible. Do not extrapolate
3. Capacities are based on the following conditions:
- Interconnecting Piping Length 24.6 ft
- Level Difference of Zero.
- Indoor Air Temperature
:70°F(21.1°C) DB / 60°F(15.6°C) WB
- Outdoor Air Temperature
: 47°F(8.3°C) DB / 43°F(6.1°C) WB
Outdoor Air
Temperature
Indoor Air Temp. °F DB/°F WB
60 64 68 70 72 75 86
(°F DB) (°F WB) TC PI TC PI TC PI TC PI TC PI TC PI TC PI
6 5 17.24 1.51 16.71 1.49 16.54 1.49 16.38 1.48 16.25 1.48 15.93 1.46 15.55 1.46
10 9 17.99 1.56 17.45 1.54 17.27 1.54 17.10 1.53 16.97 1.53 16.63 1.51 16.23 1.51
16 14 18.56 1.57 18.00 1.56 17.82 1.56 17.64 1.54 17.51 1.54 17.15 1.53 16.75 1.53
19 17 18.94 1.62 18.37 1.61 18.18 1.61 18.00 1.59 17.86 1.59 17.50 1.57 17.09 1.57
24 23 20.49 1.79 19.87 1.77 19.67 1.77 19.48 1.76 19.33 1.76 18.94 1.74 18.49 1.74
32 30 23.99 2.17 23.26 2.15 23.03 2.15 22.80 2.13 22.63 2.13 22.17 2.11 21.64 2.11
41 38 27.10 2.51 26.28 2.49 26.01 2.49 25.75 2.46 25.56 2.46 25.04 2.44 24.45 2.44
43 40 27.88 2.60 27.03 2.57 26.76 2.57 26.49 2.55 26.29 2.55 25.76 2.52 25.15 2.52
47 43 29.04 2.72 28.16 2.70 27.88 2.70 27.60 2.67 27.39 2.67 26.84 2.64 26.20 2.64
53 50 29.33 2.75 28.44 2.72 28.15 2.72 27.88 2.70 27.66 2.70 27.11 2.67 26.46 2.67
59 55 30.00 2.78 29.09 2.75 28.80 2.75 28.51 2.72 28.29 2.72 27.72 2.70 27.07 2.70
64 60 30.64 2.83 29.71 2.80 29.41 2.80 29.12 2.78 28.90 2.78 28.32 2.75 27.64 2.75
70 66 31.22 2.87 30.27 2.85 29.97 2.85 29.67 2.82 29.44 2.82 28.85 2.79 28.17 2.79
75 71 31.66 2.91 30.70 2.89 30.38 2.89 30.08 2.86 29.85 2.86 29.25 2.83 28.56 2.83
78 75 31.95 2.94 30.98 2.91 30.66 2.91 30.36 2.88 30.13 2.88 29.52 2.85 28.82 2.85
PERFORMANCE DATA
Heating Capacity
36 | PRODUCT DATA
Art Cool Mirror Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication.
This page intentionally left blank.
Due to our policy of continuous product innovation, some specifications may change without notification.
38 | APPLICATION GUIDELINES
Art Cool Mirror Wall Mounted Engineering Manual
EQUIPMENT SELECTION PROCEDURE
Cooling / Heating Correction Factors
For the Art Cool Mirror system, calculate the equivalent length of the liquid line from the outdoor unit to the indoor unit. Also, determine the
elevation difference of the indoor unit above or below the outdoor unit. Find corresponding cooling or heating capacity correction factors as
shown in Figure 7 throuigh Figure 10. Multiply the correction factors by the cooling or heating capacity obtained from the capacity table using
design conditions. The resultant is the NET cooling or heating capacity. Consult Table 7, for equivalents lengths regarding elbow connectors.
Capacity Coefficient Factors
Figure 7:CoolingCapacityCoefcientFactor
Figure 8:HeatingCapacityCoefcientFactor
LAN090HSV2, LAU090HSV2
LAN120HSV2, LAU120HSV2
Cooling
9k,12k
65.6 98.4
Total Pipe Length (ft)
Capacity(%)
100
90
95
24.6
Heating
Capacity(%)
24.6
100
95
9k,12k
65.6 98.4
Total Pipe Length (ft)
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
APPLICATION GUIDELINES | 39
Application Guidelines
Component
Size (Inches)
1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2 1-5/8 1-3/4 2-1/8
Elbow (ft.)
0.5 0.6 0.7 0.8 1.2 1.3 1.5 1.6 1.8 2.0 2.1 2.3 2.5 2.8
Equivalent Piping Length for Piping Components
Capacity Coefficient Factors (Continued)
Figure 9:CoolingCapacityCoefcientFactor
Figure 10:HeatingCapacityCoefcientFactor
EQUIPMENT SELECTION PROCEDURE
LAN180HSV2, LAU180HSV2
LAN240HSV2, LAU240HSV2
Cooling
24k
18k
65.6 98.4
Total Pipe Length (ft)
100
95
90
24.6
Capacity(%)
Heating
24.6 65.6 98.4
100
95
18k
24k
Total Pipe Length (ft)
Capacity(%)
Table 9:Equivalent Piping Length for Elbows
Due to our policy of continuous product innovation, some specifications may change without notification.
40 | APPLICATION GUIDELINES
Art Cool Mirror Wall Mounted Engineering Manual
BUILDING VENTILATION DESIGN GUIDE
ASHRAE 62.1 and local codes specify the minimum volume of outdoor air that must be provided to an occupied space. Outdoor air is
required to minimize adverse health effects, and it provides acceptable indoor air quality for building occupants. The three methods of ac-
complishing this with LG DFS Single Zone Art Cool Mirror systems are summarized here.
Disclaimer
Although we believe that these building ventilation methods have been portrayed accurately, none of the methods have been
tested, veried, or evaluated by LG Electronics, U.S.A., Inc. In all cases, the designer, installer, and contractor should under-
stand that if the suggested method is used, it is used at their own risk. LG Electronics U.S.A., Inc., takes no responsibility and of-
fers no warranty, expressed or implied, of merchantability or tness of purpose if this method fails to perform as stated or intended.
• For a complete copy of Standard 62.1-2010, refer to the American Standard of Heating and Air Conditioning Engineers (ASHRAE)
website at www.ashrae.org.
• For more information on how to properly size a ventilation air pretreatment system, refer to the article, "Selecting DOAS Equipment with
Reserve Capacity" by John Murphy, published in the ASHRAE Journal, April 2010.
Method 1: Decoupled Dedicated Outdoor Air System (DDOAS)
Provide a separate, dedicated outdoor-air system designed to filter, condition, and dehumidify ventilation air and deliver it directly to the con-
ditioned space through a separate register or grille. This approach requires a separate independent ventilation duct system not associated
with the DFS Single Zone Art Cool Mirror system (Figure 11).
Advantages
•Does not add additional heating or cooling loads to indoor units.
•May be used with all Single Zone Art Cool Mirror systems.
•If the outdoor air unit fails, the resulting untreated air will be readily
noticed by the occupants.
•The outdoor air unit may supply “neutral” air to the occupant space
even when the DFS Single Zone indoor unit fan changes speed or
cycles on and off. DDOAS controls do not have to be interlocked
with the Single Zone Art Cool Mirror system.
•In lieu of installing localized smaller outside air treatment
equipment throughout the building, this method centralizes the
ventilation air source making service and filter changes easier and
less disruptive for the building occupants.
•Indoor unit operation and performance will not be affected by the
condition of outdoor air.
•Third-party demand control ventilation controls are more readily
accommodated.
Disadvantages
•Ceiling space is required to accommodate ductwork between the
centralized outdoor air unit and ceiling diffusers.
LG recommends using the DDOAS method in all installations.
Building Ventilation Design Guide
Ceiling Diffuser
Outdoor Air Unit / ERV
Outdoor Air
Wall Mount Inverter
Intake Grill
Figure 11: Decoupled Dedicated Outdoor System Diagram
Methodology illustrations are for examples only and do not depict actual
indoor units for the specic outdoor unit pairing. These are generic ilustra-
tions to show ventilation design only!
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
APPLICATION GUIDELINES | 41
Application Guidelines
BUILDING VENTILATION DESIGN GUIDE
Method 2: Unconditioned Outdoor Air (Non-Ducted, Natural Ventilation)
Natural ventilation devices, such as operable windows or louvers may be used to ventilate the building when local code permits. The open
area of a window or the free area of a louver must meet the minimum percentage of the net occupied floor area (Figure 12).
Advantages
•Occupants control the volume of the ventilation air manually.
•Useful for historic buildings that have no ceiling space available for
outdoor air ductwork.
•May be used with all Single Zone Art Cool Mirror systems..
Disadvantages
•In some locations, it may be difficult to control humidity levels when
windows are open.
•Thermal comfort levels may be substandard when windows are
open.
•Indoor units may have to be oversized to account for the added
heating and cooling loads when windows are open.
•Provides outdoor air to perimeter spaces only. Additional mechani-
cal ventilation system may be required to satisfy requirements for
interior spaces.
•Outdoor air loads may be difficult to calculate since the quantity of
outdoor air is not regulated.
•May affect indoor unit proper operation when open.
Method 3: Unconditioned Outdoor Air (Non-Ducted, Fan Assisted Ventilation)
When approved by local codes, the fan assisted ventilation method uses exhaust fans to remove air from the building, and outdoor air is
drawn into occupied spaces through a wall louver or gravity roof intake hood. Supply fans can also be used to push the outdoor air into the
space and building positive pressure will vent the exhaust air through louvers or roof-mounted exhaust hoods. Outdoor air is neither cooled
nor heated before entering the building (Figure 13).
Advantages
•Outdoor air may be manually controlled by the occupant or auto-
matic controls may be installed to open/close outdoor air dampers
or to turn on/off ventilation fans.
•Useful for large open spaces like warehouses, garages, and
workshops.
•Outdoor air volume is a known quantity. Air loads may be easier to
calculate since fans will regulate the amount of outdoor air.
•May be used with all Single Zone Art Cool Mirror systems..
Disadvantages
•In some locations of the country, it may be difficult to control
humidity levels while outdoor air louvers/hoods are opened.
•Thermal comfort levels may be substandard when louvers/hoods
are opened.
•Indoor units may have to be oversized to account for the added
heating/cooling loads when louvers/hoods are open.
•Hot, cold, and/or humid areas may be present if the outdoor air is
not evenly distributed to the different spaces.
This may result in loss of building pressurization control, increasing inltration loads with adverse effects.
Figure 12:Unconditioned Outdoor Air (Non-Ducted)
Figure 13: Unconditioned Outdoor Air (Non-Ducted)
OA Wall
Louver
Damper
Roof Fan
Methodology illustrations are for examples only and do not depict actual
indoor units for the specic outdoor unit pairing. These are generic illus-
trations to show ventilation design only!
Methodology illustrations are for examples only and do not
depict actual indoor units for the specic outdoor unit pairing.
These are generic illustrations to show ventilation design only!
Due to our policy of continuous product innovation, some specifications may change without notification.
42 | APPLICATION GUIDELINES
Art Cool Mirror Wall Mounted Engineering Manual
PLACEMENT CONSIDERATIONS
Selecting the Best Location
Select a location for installing the outdoor unit that will meet the following conditions:
•Where the unit will not be subjected to direct thermal radiation from other heat sources.
•Where operating sound from the unit will not disturb inhabitants of surrounding buildings.
•Where the unit will not be exposed to direct, strong winds.
•Where there is enough strength to bear the weight of the unit.
•Include space for drainage to ensure condensate flows properly out of the unit when it is in heating mode.
•Include enough space for air flow and for service access.
•To avoid the possibility of fire, do not install the unit in an area where combustible gas may generate, flow, stagnate, or leak.
•Do not install the unit in a location where acidic solution and spray (sulfur) are often used.
•Do not use the unit in environments where oil, steam, or sulfuric gas are present.
•Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it.
To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or
severe windchill or cold:
1. Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these are unusual phenomena.
2. Position the outdoor unit so that its airflow fans are not buried by direct, heavy snowfall. If snow piles up and blocks the airflow, the
system may malfunction.
3. Remove any snow that has accumulated 3-15/16 inches or more on the top of the outdoor unit.
4. Place the outdoor unit on a raised platform at least 19-11/16 inches higher than the average annual snowfall for the area. In environments
where there is a possibility of heavy snow, the frame height must be more than two (2) times the amount of average annual snowfall, and
should not exceed the width of the outdoor unit. If the frame width is wider than the outdoor unit, snow may accumulate.
5. Install a snow protection hood.
6. To prevent snow and heavy rain from entering the outdoor unit, install the suction and discharge ducts facing away from direct winds.
Additionally, the following conditions should be taken into considerations when the unit operates in defrost mode:
•If the outdoor unit is installed in a highly humid environment (near an ocean, lake, etc.), ensure that the site is well-ventilated and has a lot
of natural light. (Example: Install on a rooftop.)
•Sidewalks or parking lots near the outdoor unit may accumulate moisture after unit operates in defrost mode that can turn to ice.
The indoor unit may take longer to provide heat, or heating performance will be reduced in winter if the unit is installed:
1. In a narrow, shady location.
2. Near a location that has a lot of ground moisture.
3. In a highly humid environment.
4. In an area in which condensate does not drain properly.
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
APPLICATION GUIDELINES | 43
Application Guidelines
PLACEMENT CONSIDERATIONS
Mounting Platform
The underlying structure or foundation must be designed to support the weight of the unit. Avoid placing the unit in a low lying area where
water may accumulate. When installing ODU on the wall, or roof top, anchor the mounting base securely to account for wind, earthquake or
vibration.
Tie-Downs and Wind Restraints
ThestrengthoftheDFSSingleZoneInvertersystemframeisadequatetobeusedwitheld-providedwindrestrainttie-downs.Theoveralltie-
downcongurationmustbeapprovedbyalocalprofessionalengineer.Alwaysrefertolocalcodewhendesigningawindrestraintsystem.
Snow and Ice Conditions
In climates that experience snow buildup, place the unit on a raised platform to ensure proper condenser airflow. The raised support platform
must be high enough to allow the unit to remain above possible snow drifts. Mount the unit on a field-provided snow stand at a minimum
height that is equal to the average annual snowfall, plus 20 inches. Design the mounting base to prevent snow accumulation on the platform
in front or back of the unit case. If necessary, provide a field fabricated hood to keep snow and ice and/or drifting snow from accumulating
on the coil surfaces. Use inlet and discharge duct or hoods to prevent snow or rain from accumulating on the fan inlet and outlet guards.
Best practice prevents snow from accumulating on top of the unit. Consider tie-down requirements in case of high winds or where required
by local codes.
Ambient Air Conditions
Avoid exposing the outdoor unit to steam, combustible gases, or other corrosive elements. Avoid exposing the unit to discharge from boiler
stacks, chimneys, steam relief ports, other air conditioning units, kitchen vents, plumbing vents, and other sources of extreme temperature,
gases, or substances that may degrade performance or cause damage to the unit.
When installing multiple outdoor units, avoid placing the units where discharge of one outdoor unit will blow into the inlet side of an adjacent unit.
General Mounting
Securely attach the outdoor unit to a condenser pad,
base rails, or other mounting platform that is securely
anchored to the ground or building structure. Attach the
ODU with a bolt and nut onto a concrete or rigid mount
(Figure 14). Refer to installation manual and follow the
applicable local code for clearance, mounting, anchor,
and vibration attenuation requirements.
Figure 14: Outdoor Unit—Mounting Methods
All referenced materials are to be eld-supplied. Images are
not to scale.
Bolt
Placement
& Anti-Vibration
Pad
Piping connection
Top of Unit
Foundation
Outdoor Installation
When deciding on a location to place the outdoor unit, be sure to choose an area
where run-off from defrost will not accumulate and freeze on sidewalks or driveways.
Due to our policy of continuous product innovation, some specifications may change without notification.
44 | APPLICATION GUIDELINES
Art Cool Mirror Wall Mounted Engineering Manual
Outdoor Installation
PLACEMENT CONSIDERATIONS
Proper airflow through the ODU coil is critical for proper unit operation. When installing the ODU, consider service, inlet, and outlet, and
minimum allowable space requirements as illustrated in the diagrams below.
Specific clearance requirements in the diagrams below are for the Art Cool Mirror ODU. Figure 15 shows the overall minimum clearance that
must be observed for safe operation and adequate airflow around the ODU. If placing the unit close to a retaining wall or building; see Figure
16, for proper placement and adequate clearance space from the side and rear of the ODU..
Figure 15: Art Cool Mirror Outdoor Unit Clearance
Single Zone Art Cool Mirror Wall Mount Outdoor Unit Clearance
Outdoor Unit Clearance
Figure 16: Art Cool Mirror Outdoor Unit Next to Wall - Clearance
Outdoor Unit
Wall Clearance
Sunroof
Overhang
Or Roof
Figure 17: Art Cool Mirror Outdoor Unit Under Roof/Overhang
When placing the outdoor unit under an overhang, awning, sunroof
or other "roof-like" structure, be sure to observe the clearance for
height in relation to the unit as shown in Figure 17. This clearance
ensures that heat radiation from the condenser is not restricted
around the unit.
Adhere to all clearance requirements if installing the unit on a roof.
Be sure to level the unit and ensure that unit is adequately an-
chored. Consult local codes regarding rooftop mounting.
Do not place the unit where animals and/or plants will be in the path of
the warm air; or where the warm air and/or noise will disturb neighbors.
Due to our policy of continuous product innovation, some specifications may change without notification.
“Refrigerant Piping Design” on page 46
"Selecting Field-Supplied Copper Tubing" on page 47
"Refrigerant Piping System Layout" on page 48
“Piping Connection” on page 45
"Electrical Connections" on page 53
“Mechanical Specifications” on page 45
"Acronyms" on page 55
REFRIGERANT PIPING
DESIGN & LAYOUT
BEST PRACTICES
Due to our policy of continuous product innovation, some specifications may change without notification.
46 | REFRIGERANT DESIGN
Art Cool Mirror Wall Mounted Engineering Manual
REFRIGERANT PIPING DESIGN
Design Guideline Summary
Device Connection Limitations
A Single Zone Art Cool Mirror Wall Mount system consists of one outdoor unit and one indoor unit.
Table 10: Art Cool Mirror Wall Mount Refrigerant Piping System Limitations
LAU090HSV2/LAU120HSV2 LAU180HSV2/LAU240HSV2
Pipe Length
(ELF = Equivalent Length of
pipe in Feet)
Longest total equivalent piping length
65.6 feet 98.4 feet
Distance between fittings and indoor or outdoor units
≥20inches ≥20inches
Elevation
(All Elevation Limitations
are Measured in Actual
Feet)
If outdoor unit is above indoor unit
32.8 feet 49.2 feet
If outdoor unit is below indoor unit
32.8 feet 49.2 feet
Additional Refrigerant Needed
0.22 (oz/ft) 0.38 (oz/ft)
One of the most critical elements of a Art Cool Mirror Wall Mount system is the refrigerant piping. Table 10 below lists pipe length limits that must
be followed in the design of a Single Zone Wall Mount refrigerant pipe system. Refer to Figure 18 for maximum length and elevation of piping.
Figure 18: Art Cool Mirror System Layout
Art Cool Mirror System Layout
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
Max Length = A
Max Elevation = B
Unit = Feet
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
REFRIGERANT DESIGN | 47
Refrigerant Piping Design & Layout Best Practices
Selecting Field-Supplied Copper Tubing
Pipe
Length
1
Fluid Temperature °F
35° 40° 45° 50° 55° 60° 65° 70° 75° 80° 85° 90° 95° 100° 105° 110° 115° 120° 125° 130°
10
0.04 0.04 0.05 0.06 0.06 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.11 0.12 0.13 0.14 0.15 0.15
20
0.08 0.08 0.10 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.22 0.23 0.26 0.28 0.29 0.30
30
0.12 0.12 0.15 0.18 0.20 0.21 0.23 0.24 0.26 0.27 0.29 0.30 0.32 0.33 0.32 0.35 0.39 0.42 0.44 0.45
40
0.16 0.16 0.20 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.43 0.46 0.52 0.56 0.58 0.60
50
0.20 0.20 0.25 0.30 0.33 0.35 0.38 0.40 0.43 0.45 0.48 0.50 0.53 0.55 0.54 0.58 0.65 0.70 0.73 0.75
60
0.24 0.24 0.30 0.36 0.39 0.42 0.45 0.48 0.51 0.54 0.57 0.60 0.63 0.66 0.65 0.69 0.78 0.84 0.87 0.90
1
Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox.com.
Table 11: Linear Thermal Expansion of Copper Tubing in Inches
Anticipated Linear
Expansion (LE) (inches)
Nominal Tube Size (OD) inches
1/4 3/8 1/2 3/4
1/2
R
1
6 7 8 9
L
2
38 44 50 59
1
R
1
9 10 11 13
L
2
54 63 70 83
1-1/2
R
1
11 12 14 16
L
2
66 77 86 101
2
R
1
12 14 16 19
L
2
77 89 99 117
2-1/2
R
1
14 16 18 21
L
2
86 99 111 131
3
R
1
15 17 19 23
L
2
94 109 122 143
3-1/2
R
1
16 19 21 25
L
2
102 117 131 155
4
R
1
17 20 22 26
L
2
109 126 140 166
1
R = Centerline Length of Pipe.
2
L = Centerline Minimum Radius (inches).
Large Tubing U-bend (>3/4 in.)
Small Tubing U-bend (<3/4 in.)
Figure 19: Coiled Expansion Loops and Offsets
Large Tubing U-bend (>3/4 in.)
R
L
Table 12: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets
Loop
R
L
Small Tubing U-bend (<3/4 in.)
L
REFRIGERANT PIPING DESIGN
Due to our policy of continuous product innovation, some specifications may change without notification.
48 | REFRIGERANT DESIGN
Art Cool Mirror Wall Mounted Engineering Manual
Refrigerant Piping System Layout
INSTALLATION & LAYOUT BEST PRACTICES
Physical Pipe Length: Actual length of straight segment(s) of pipe.
Equivalent Pipe Length: Actual length of pipe plus equivalent
lengths of elbows and valves.
1. Draft a one-line diagram of the proposed piping system connect-
ing outdoor unit to indoor unit. Follow the pipe limitations listed.
2. Calculate the physical length of each pipe segment and note it on
the drawing.
3. Calculate the equivalent pipe length of each pipe segment.
Using Elbows
Field-supplied elbows are
allowed as long as they are
designed for use with R410A
refrigerant. The designer, how-
ever, should be cautious with
the quantity and size of fittings
used, and must account for the
additional pressure losses in
equivalent pipe length calcula-
tion. The equivalent pipe length
of each elbow must be added to
each pipe segment. See Table
13, for equivalent lengths.
Table 13: Equivalent Piping Length for Piping Components
Field-Provided Isolation Ball Valves
It is acceptable to install field-supplied ball valves with Schrader
ports at the indoor unit. Full-port isolation ball valves with Schrader
ports (positioned between valve and the indoor unit) rated for use
with R410A refrigerant should be used on both the liquid and vapor
lines.
If valves are not installed and the indoor unit needs to be removed or
repaired, the entire system must be shut down and evacuated.
Position valves with a minimum distance of three (3) to six (6) inches
of pipe on either side of the valve. Valves must be easily accessible
for service. If necessary, install drywall access doors or removable
ceiling panels, and position the valves to face the access door or
ceiling panel opening. Mount valves with adequate space between
them to allow for placement of adequate pipe insulation around the
valves. Recommended best practice is to clearly label and docu-
ment locations of all service valves. The equivalent pipe length of
each ball valve must be added to each pipe segment.
Figure 20: Installing Piping Above and Below an Obstacle
Above an obstacle.
3X
Below an obstacle.
Minimum
Obstacles
When an obstacle, such as an I-beam or concrete T, is in the path
of the planned refrigerant pipe run, it is best practice to route the
pipe over the obstacle. If adequate space is not available to route
the insulated pipe over the obstacle, then route the pipe under the
obstacle. In either case, it is imperative the horizontal section of pipe
above or below the obstacle be a minimum of three (3) times greater
than the longest vertical rise (or fall) distance (Figure 20).
Definitions
Layout Procedure
Component
Size (Inches)
1/4 3/8 1/2 5/8 3/4
Elbow (ft.)
0.5 0.6 0.7 0.8 1.2
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
REFRIGERANT DESIGN | 49
Refrigerant Piping Design & Layout Best Practices
INSTALLATION & LAYOUT BEST PRACTICES
Refrigerant Piping System Layout
No Pipe Size Substitutions
Using a different size is prohibited and may result in a system malfunction or failure to work at all.
In-line Refrigeration Components
Components such as oil traps, solenoid valves, filter-dryers, sight glasses, tee fittings, and other after-market accessories are not permitted
on the refrigerant piping system between the outdoor unit and the indoor unit. Art Cool Mirror Wall Mount air-source systems are provided
with redundant systems that assure oil is properly returned to the compressor. Sight-glasses and solenoid valves may cause vapor to form
in the liquid stream. Over time, dryers may deteriorate and introduce debris into the system. The designer and installer verify the refrigerant
piping system is free of traps, sagging pipes, sight glasses, filter dryers, etc.
Pipe Supports
A properly installed pipe system should be adequately supported
to avoid pipe sagging. Sagging pipes become oil traps that lead to
equipment malfunction.
Pipe supports should never touch the pipe wall; supports shall be
installed outside (around) the primary pipe insulation jacket (see
Figure 21). Insulate the pipe first because pipe supports shall be
installed outside (around) the primary pipe insulation jacket. Clevis
hangers should be used with shields between the hangers and
insulation. Field provided pipe supports should be designed to
meet local codes. If allowed by code, use fiber straps or split-ring
hangers suspended from the ceiling on all-thread rods (fiber straps
or split ring hangers can be used as long as they do not compress
the pipe insulation). Place a second layer of insulation over the pipe
insulation jacket to prevent chafing and compression of the primary
insulation within the confines of the support pipe clamp.
A properly installed pipe system will have sufficient supports to avoid
pipes from sagging during the life of the system. As necessary,
place supports closer for segments where potential sagging could
occur. Maximum spacing of pipe supports shall meet local codes.
If local codes do not specify pipe support spacing, pipe shall be
supported:
•Maximumoffivefeet(5′)oncenterforstraightsegmentsofpipeup
to 3/4" outside diameter size.
Wherever the pipe changes direction, place a hanger within twelve
(12) inches on one side and within twelve to nineteen (12 to 19)
inches of the bend on the other side as shown in Figure 22.
Figure 21: Pipe Hanger Details
Figure 22: Typical Pipe Support
Location—Change in Pipe Direction
Figure 23: Pipe Support at
Indoor Unit
Max. 12"
~ 12" – 19"
A
B
A + B ~ 12" – 19"
Due to our policy of continuous product innovation, some specifications may change without notification.
50 | REFRIGERANT DESIGN
Art Cool Mirror Wall Mounted Engineering Manual
Refrigerant Piping System Layout
INSTALLATION & LAYOUT BEST PRACTICES
Pipe Sleeves at Penetrations
LG requires that all pipe penetrations through walls, floors, and pipes buried underground be properly insulated and routed through an
appropriate wall sleeve of sufficient size to prevent compression of refrigerant pipe insulation and free movement of the pipe within the
sleeve. Underground refrigerant pipe shall be routed inside a protective sleeve to prevent insulation deterioration See Figure 24.
Figure 24: Pipe Sleeve Options
Vapor Line
Liquid Line
Min. 18 Gauge
Cable
Power/Communication
Pi
p
e Sleeve
Insulation Material
Insulation
Material
Underground Refrigerant Piping
Refrigerant pipe installed underground should be routed inside a
vapor tight protective sleeve to prevent insulation deterioration and
water infiltration. Refrigerant pipe installed inside underground
casing must be continuous without any joints. Underground refriger-
ant pipe must be located at a level below the frost line.
Figure 25: Typical Arrangement of Refrigerant Pipe and Cable(s) in a
Utility Conduit
Table 14: Utility Conduit Sizes (Inches)
1
OD pipe diameter in inches; Values in parenthesis () indicate OD of pipe with insulation jacket.
2
Diameter of pipe with insulation. Thickness of pipe insulation is typical. Actual required thickness may
vary based on surrounding ambient conditions and should be calculated and specified by the design
engineer.
3
Insulation thickness (value in parenthesis) = 3/8 inch.
4
Insulation thickness (value in parenthesis) = 3/4 inch.
Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation.
Liquid Pipe
1
Vapor Pipe
1
3/8 (1-1/8
2,3
) 1/2 (2.0
2,4
) 5/8 (2-1/8
2,4
)
1/4 (1.0)
4
4 4 4
3/8 (1-1/8)
4
4 4 4
Model
Liquid Conn.
(inches)
Vapor Conn.
(inches)
LAU090HSV2, LAU120HSV2
1/4 3/8
LAU180HSV2, LAU240HSV2
3/8 5/8
Table 15: Heat Pump Unit Refrigerant Pipe Connections (All Brazed Type)
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
REFRIGERANT DESIGN | 51
Refrigerant Piping Design & Layout Best Practices
INSTALLATION & LAYOUT BEST PRACTICES
Single Zone Art Cool Mirror Outdoor Unit Connections
Piping Connection
1. Remove the tubing cover from the unit by loosening the fastening
screws (Figure 26).
2. Align the center of the refrigerant pipe and corresponding connection
as shown in Figure 27.
3. Place a couple of drops of refrigerant oil on the opening rim of the
flare before assembling. Take care not to add any contaminants.
Tighten the flare nut initially by hand.
4. Finish tightening the flare nut with a torque wrench until the wrench
clicks (Figure 28). Follow the guidelines as outlined in Table 16 for
the amount of torque to use.
Tubing cover
Figure 26:Outdoor Unit Connection Cover Removal
Figure 27:Pipe Attachment
When tightening the are nut with torque wrench, ensure
the direction for tightening follows the arrow on the wrench.
Outside Diameter
(Inches)
Torque
(Lbs.-ft)
1/4 13-18
3/8 24.6-30.4
1/2 39.8-47.7
5/8 45.6-59.3
3/4 71.6-87.5
Table 16:Torque Wrench Tightening
Figure 28:Heat Pump Outdoor Unit Piping Connection
Outdoor unit
Gas side piping
(Bigger diameter )
Liquid side piping
(Smaller diameter )
Torque wrench
Due to our policy of continuous product innovation, some specifications may change without notification.
52 | REFRIGERANT DESIGN
Art Cool Mirror Wall Mounted Engineering Manual
INSTALLATION & LAYOUT BEST PRACTICES
Refrigerant Piping System Layout
Refrigerant Piping System Insulation
All refrigerant piping, field-provided isolation ball valves, service valves, and elbows shall be completely insulated using closed cell pipe
insulation. The liquid and vapor lines must be insulated separately.
To prevent heat loss/heat gain through the refrigerant piping, all refrigerant piping including liquid lines, and vapor lines shall be insulated
separately.Insulationshallbeaminimum1/2″thick,andthicknessneedstobeincreasedbasedonambientconditionsandlocalcodes.
All insulation joints are to be glued with no air gaps. Insulation material must fit snugly against the refrigeration pipe with no air space
between it and the pipe. Insulation passing through pipe hangers, inside conduit, and/or sleeves must not be compressed. Protect insulation
inside hangers and supports with a second layer. All pipe insulation exposed to the sun and outdoor elements shall be properly protected
with PVC, aluminum vapor barrier, or alternatively placed in a weather-resistant enclosure such as a pipe rack with a top cover; and meet
local codes.
The design engineer performs calculations to determine if the factory-supplied insulation jackets are sufficient to meet local codes and avoid
sweating. Add additional insulation if necessary. Mark all pipes at the point where the insulation jacket ends. Remove the jacket. Install
field provided insulation on the run-out and main trunk pipes first. Peel the adhesive glue protector slip from the insulation jacket and install
the clam-shell jacket over the fitting.
All joints are brazed in the field. DFS Single Zone Inverter refrigeration system
components contain very small capillary tubes, small orifices, electronic expan-
sion valves, oil separators, and heat exchangers that can easily become blocked.
Proper system operation depends on the installer using best practices and utmost
care while assembling the piping system. (See Figure 29.)
•While brazing, use a dry nitrogen purge operating at a minimum pressure of three
(3) psig and maintain a steady flow.
•Blow clean all pipe sections with dry nitrogen prior to assembly.
•Use a tubing cutter, do not use a saw to cut pipe. De-burr and clean all cuts
before assembly.
•Store pipe stock in a dry place. Keep pipe capped and clean.
•Use adapters to assemble different sizes of pipe.
•Do not use flux, soft solder, or anti-oxidant agents.
•Use a 15% silver phosphorous copper brazing alloy to avoid overheating and produce good flow.
•Protect isolation valves, electronic expansion valves, and other heat-sensitive control components from excessive heat with a wet rag or a
heat barrier spray product
Installation of Refrigerant Piping / Brazing Practices
Pressure-reducing
Valve
Valve
Taping
Nitrogen
Pipe to
be brazed
Refrigerant
Piping
Figure 29: Refrigerant Pipe Brazing.
Keep the piping system free of contaminants and debris such as copper burrs, slag, or carbon dust during installation.
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
REFRIGERANT DESIGN | 53
Refrigerant Piping Design & Layout Best Practices
ELECTRICAL CONNECTIONS
Air
Conditioner
Main Power Source
Circuit Breaker
Use a circuit breaker
Or time delay fuse
Always use a circuit breaker or time delay fuse when connect-
ing electrical wiring to the unit.
Outdoor Electrical Connection
• Comply with local codes while running wire from the
indoor unit to the outdoor unit.
• Be sure to connect wire firmly.
• Separately wire the high and low voltage lines.
• Use heat-proof electrical wiring capable of withstand-
ing temperatures up to 167°F.
• Use outdoor and waterproof connection cable
rated up to 300V for the connection between
indoor and outdoor unit.
• Do not allow wire to touch refrigerant tubing, the com-
pressor or any moving parts.
Figure 30:Outdoor Unit Connection
1. Remove the control cover from the unit by
loosening the fastening screw (Figure 30).
2. Take off the caps on the conduit panel.
3. Connect both the power supply and low voltage
lines to the corresponding terminals on the ter-
minal block (see Figure 32 and Figure 33).
4. Be sure to ground the unit by following local
codes (see Figure 31).
5. Allow for enough length (add several inches)
for each wiring.
6. Secure the cable with the cord clamp.
7. Secure conduit tubes with lock nuts.
8. Refix the control cover to the original position
with the fastening screw.
Terminal block
Connecting
cable
Power
supply
cord
Conduit panel
Tubing cover
Over 0.2”
Art Cool Mirror
Outdoor Unit
208/230 VA C
Figure 31:Circuit Breaker
Figure 32:Terminal Block Wiring Diagram LAU090HSV2, LAU120HSV2
Figure 33:Terminal Block Wiring Diagram LAU180HSV2, LAU240HSV2
Due to our policy of continuous product innovation, some specifications may change without notification.Due to our policy of continuous product innovation, some specifications may change without notification.
54 | REFRIGERANT DESIGN
Art Cool Mirror Wall Mounted Engineering Manual
General
LG Single Zone Art Cool Mirror system
comprises a single outdoor unit connected to
a single indoor unit with a single refrigerant
circuit.
An LG Single Zone Art Cool Mirror system
is a DFS system that can operate in either
cooling or heating mode. The system is
capable of changing mode within a maximum
time of three (3) minutes to ensure indoor
temperature can be properly maintained.
LG components are manufactured in a
facility registered to ISO 9001 and ISO
14001, which is a set of standards apply-
ing to environmental protection set by the
International Organization for Standardiza-
tion (ISO). The units are listed by Intertek
Electrical Testing Laboratories (ETL) and
bear the ETL label. Wiring in these units are
in accordance with the National Electrical
Code (NEC).
Temperature Ranges
Outdoor Unit
Operating ranges for Outdoor units of 14°F to
118°F for cooling; 5°F to 75°F for heating
Operating ranges for Indoor Units of 64°F to
90°F for cooling; 60°F to 86°F for heating
Casing / Frame
Outdoor unit is constructed with pre-coated
metal (PCM).
Indoor unit is constructed of heavy duty
Acrylonitrile Butadiene Styrene (ABS) and
High Impact Polystyrene (HIPS) plastic.”
Refrigerant System
The refrigeration system consists of a single
refrigeration circuit and uses R410A refriger-
ant. The outdoor unit is provided with factory
installed components, including a refrigerant
strainer, check valves, oil separator, accu-
mulator, four-way reversing valve, electronic
controlled expansion valve (EEV), high and
low side charging ports, service valves, and
interconnecting piping.
Refrigeration Oil Control
Heat Pump outdoor units have a centrifugal
oil separator and controls to ensure suf-
ficient oil supply is maintained, and that oil
does not travel with the refrigerant.
Compressors
The outdoor unit is equipped with one
hermetic digitally controlled inverter driven
rotary (9k/12k Btu/h systems) or twin-rotary
(18k.24k Btu/h systems) compressor to
modulate capacity (modulation in 1 Hz
increments).
Frequency ranges for the outdoor units are:
9k Btu/h = 25 to 107 Hz
12k Btu/h = 25 to 107 Hz
18/24k Btu/h = 10 to 100 Hz
Over-current protection and vibration isola-
tion are integrated with the compressor.
Outdoor Unit Coil
Heat Pump outdoor unit coils are of a
nonferrous construction with louvered fins
on copper tubing, and are protected with an
integral coil guard. Coil fins have a factory
applied corrosion resistant GoldFin™ mate-
rial with hydrophilic coating.
Fans and Motors
The outdoor unit includes one direct drive,
variable speed propeller type fan.
The Brushless Digitally Controlled (BLDC)
fan motor shall have inherent protection, per-
manently lubricated bearings, and variable
speed with a maximum speed up to 950 rpm.
Raised guards are provided to limit contact
with moving parts.
The outdoor unit has horizontal discharge
airflow.
Electrical
The unit is available in 208-230V 60 Hz,
1-phase power supply. The unit is capable of
operating within voltage limits of ±10% rated
voltage, and include overcurrent protection.
Controls
The unit is factory wired with necessary elec-
trical control components, integral micropro-
cessors, printed circuit boards, thermistors,
sensors, terminal blocks, and lugs for power
wiring.
Microprocessor-based algorithms provide
component protection, soft-start capability,
refrigeration system pressure, temperature,
defrost, and ambient control.
Single Zone Art Cool Mirror
MECHANICAL SPECIFICATIONS
Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
REFRIGERANT DESIGN | 55
Mechanical Specifications
Due to our policy of continuous product innovation, some specifications may change without notification.
Table 17: Table of Acronyms
ACRONYMS
ABS
Acrylonitrile Butadiene Styrene
AC
Air Conditioner
ACP
Advanced Control Platform
ASHRAE
American Society of Heating, Refrigeration, and
Air Conditioning
AWG
American Wire Gauge
BLDC
Brushless Digitally Controlled
Btu/h
British Thermal Units per hour
BUS
Binary Unit System
CFM
Cubic Feet per Minute
DB
Dry Bulb
dB(A)
Decibels with “A” frequency weighting
DDOAS
Decoupled Dedicated Outdoor Air System
DI
Digital Input
DFS
Duct Free Split
DO
Digital Output
DPST
Double-Pole Single-Throw (switch)
EEV
Electronic Expansion Valve
ELF
Equivalent Length in Feet
ETL
Electronic Testing Laboratories
H/M/L
High/Medium/Low
HIPS
High Impact Polystyrene
HVAC
Heating,Ventilation and Air Conditioning
ID
Innovations in Design (LEED Related)
IDU
Indoor Unit
ISO
International Organization for Standardization
kW
Kilo Watts
LED
Light Emitting Diode
LEED
Leadership in Energy and Environmental Design
MBh
Thousands BTUs per hour
MCA
Maximum Circuit Ampacity
MOP
Maximum Overcurrent Protection
MSC
Maximum Starting Current
NC
Noice Criterion (regarding Sound Pressure Levels)
New Construction (LEED Related)
Normally Closed
NEC
National Electrical Code
NO
Number
ODU
Outdoor Unit
PCB
Printed Circuit Board
PCM
Pre-Coated Metal
PDI
Power Distribution Indicator
PI
Power Input
PR
Prerequisite (LEED Related)
PVC
Polyvinyl Chloride
SW or
S/W
Switch
USB
Universal Serial BUS
VAC
Voltage Alternating Current
VRF
Variable Refrigerant Flow
WB
Wet Bulb
LG Electronics
Commercial Air Conditioning Division
11405 Old Roswell Road
Alpharetta, Georgia 30009
www.lg-vrf.com
DFS-EM-AA-001-US_014B06
20001747 ISO 9001: 2008
LG ELECTRONICS INC.
LG Electronics Commercial Products Support
1-888-865-3026 USA
Follow the prompts for commercial A/C products.
