single zone art cool premier wall mounted installation manual

single zone art cool premier wall mounted installation manual
SINGLE ZONE ART COOL PREMIER WALL
MOUNTED INSTALLATION MANUAL
Single Zone Art Cool Premier Wall Mount:
LA090HYV1, LA120HYV1
LA180HYV1, LA240HYV1
PROPRIETARY DATA NOTICE
This document, as well as all reports, illustrations, data, information, and
other materials are 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.
Do not throw away, destroy, or lose this manual.
Please read carefully and store in a safe place for future reference.
Content familiarity required for proper installation.
A summary list of safety precautions begins on page 3.
IM_SZ_ArtCoolPremier_HYV1_4_16
For more technical materials such as submittals, engineering
databooks, and catalogs, visit www.lghvac.com.
For continual product development, LG Electronics U.S.A., Inc., reserves the right to change specifications without notice.
©LG Electronics U.S.A., Inc.
This document, as well as all reports, illustrations, data, information, and other materials are the property of LG Electronics U.S.A., Inc.
SAFETY INSTRUCTIONS
The instructions below must be followed to prevent product malfunction, property damage, injury or death to the user or other people. Incorrect operation due to ignoring any instructions will cause harm or damage. The level of seriousness is classified by the symbols described
below.
TABLE OF SYMBOLS
This symbol indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
This symbol indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
This symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
This symbol Indicates situations that may result in equipment or property damage accidents only.
INSTALLATION
Don’t store or use flammable gas/combustibles near the unit.
There is risk of product failure, fire, explosion, and physical injury or death.
Do not install, remove, or re-install the unit by yourself
(customer). Ask the dealer or an LG trained technician to
install the unit.
Improper installation by the user may result in fire, explosion, electric
shock, physical injury or death.
For replacement of an installed unit, always contact a
LG trained service provider.
There is risk of fire, electric shock, explosion, and physical injury or
death.
Wear protective gloves when handling equipment. Sharp
edges may cause personal injury.
Do not change the settings of the protection devices.
If the pressure switch, thermal switch, or other protection device is
shorted and forced to operate improperly, or parts other than those
specified by LG are used, there is risk of fire, electric shock, explosion,
and physical injury or death.
Replace all control box and panel covers.
If cover panels are not installed securely, dust, water and animals may
enter the outdoor unit, causing fire, electric shock, and physical injury or
death.
Dispose the packing materials safely.
•Tear apart and throw away plastic packaging bags so that children
may not play with them and risk suffocation and death.
The unit is shipped with refrigerant and service valves
closed.
Do not run the compressor with the service valves
closed.
There is a risk of equipment damage, explosion, physical injury, or
death.
Install the unit considering the potential for strong winds or
earthquakes.
Improper installation may cause the unit to fall over, resulting in physical
injury or death.
If the air conditioner is installed in a small space, take
measures to prevent the refrigerant concentration from
exceeding safety limits in the event of a refrigerant leak.
Consult the latest edition of ASHRAE (American Society of Heating,
Refrigerating, and Air Conditioning Engineers) Standard 15. If the
refrigerant leaks and safety limits are exceeded, it could result in personal injuries or death from oxygen depletion.
Install the unit in a safe location where nobody can step on or
fall onto it.
Do not install the unit on a defective stand.
It may result in an accident that causes physical injury or death.
•Packing materials, such as nails and other metal or wooden parts,
may cause puncture wounds or other injuries.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
3
Safety Instructions
This symbol indicates an action should not be completed.
SAFETY INSTRUCTIONS
INSTALLATION - CONTINUED
Single Zone Art Cool Premier Wall Mounted Installation Manual
Replace all control box and panel covers.
If cover panels are not installed securely, dust, water and animals may
enter the outdoor unit, causing fire, electric shock, and physical injury or
death.
Periodically check that the outdoor frame is not damaged.
There is a risk of explosion, physical injury, or death.
Always check for system refrigerant leaks after the unit has
been installed or serviced.
Exposure to high concentration levels of refrigerant gas may lead to
illness or death.
Be very careful when transporting the product.
Use appropriate moving equipment to transport each unit; ensure
the equipment is capable of supporting the unit’s weight.
• Some products use polypropylene bands for packaging.
Do not
use the polypropylene bands to lift the unit because they will not support
the unit’s weight.
• Suspend the outdoor unit from the base at specified positions.
Support the outdoor unit a minimum of four points to avoid slippage
from rigging apparatus.
Do not install the product where it is exposed to directly
to ocean winds.
Sea salt in the air may cause the product to corrode. Corrosion,
particularly on the condenser and evaporator fins, could cause product
malfunction or inefficient operation.
When installing the unit in a low-lying area, or a location that
is not level, use a raised concrete pad or concrete blocks to
provide a solid, level foundation.
This may prevent water damage and reduce abnormal vibration.
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as uninsulated piping can generate condensate that
may drip and cause water damage to walls.
When installing the unit in a hospital, mechanical room, or
similar electromagnetic field (EMF) sensitive environment,
provide sufficient protection against electrical noise.
Inverter equipment, power generators, high-frequency medical equipment, or radio communication equipment may cause the air conditioner
to operate improperly. The unit may also affect such equipment by
creating electrical noise that disturbs medical treatment or image broadcasting.
Properly insulate all cold surfaces to prevent “sweating.”
Cold surfaces such as uninsulated piping can generate condensate that
may drip and cause a slippery surface condition.
Do not make refrigerant substitutions. Use R410A only.
If a different refrigerant is used, or air mixes with original refrigerant, the
unit will malfunction and be damaged.
When connecting refrigerant tubing, remember to allow for
pipe expansion.
Improper piping may cause refrigerant leaks and system malfunction.
Do not install the outdoor unit in a noise-sensitive area.
Take appropriate actions at the end of HVAC equipment life
to recover, recycle, reclaim or destroy R410A refrigerant
according to applicable U.S. Environmental Protection
Agency (EPA) rules.
Periodically check that the outdoor frame is not damaged.
There is a risk of equipment damage
.
Do not store or use flammable gas/combustibles near the
unit.
There is a risk of product failure.
Install the drain hose to ensure adequate drainage.
There is a risk of water leakage and property damage.
Do not use the product for mission critical or special purpose applications such as preserving foods, works of art, or
other precision air conditioning applications. The equipment
is designed to provide comfort cooling and heating.
There is risk of property damage.
4
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
SAFETY INSTRUCTIONS
WIRING
High voltage electricity is required to operate this system.
Adhere to the National Electrical Codes and these
instructions when wiring.
Improper connections and inadequate grounding can cause accidental
injury or death.
Always ground the unit following local, state, and National
Electrical Codes.
Turn the power off at the nearest disconnect before servicing
the equipment.
Electrical shock can cause physical injury or death.
Properly size all circuit breakers or fuses.
There is risk of fire, electric shock, explosion, physical injury or death.
There is risk of fire, electric shock, physical injury or death.
The information contained in this manual is intended for use
by an industry-trained, experienced electrician familiar with
the U.S. National Electric Code (NEC) who is equipped with
the proper tools and test instruments.
Failure to carefully read and follow all instructions in this manual can
result in personal injury or death.
If the power source capacity is inadequate or the electric work is not
performed properly, it may result in fire, electric shock, physical injury or
death.
Refer to local, state, and federal codes, and use power wires
of sufficient current capacity and rating.
Wires that are too small may generate heat and cause a fire.
Secure all field wiring connections with appropriate wire
strain relief.
Improperly securing wires will create undue stress on equipment power
lugs. Inadequate connections may generate heat, cause a fire and result
in physical injury or death.
Loose wiring may overheat at connection points, causing a fire, physical
injury or death.
Do not change the settings of the protection devices.
If the pressure switch, thermal switch, or other protection devices are
bypassed or forced to work improperly, or parts other than those
specified by LG are used, there is risk of fire, electric shock, explosion,
and physical injury or death.
Safety Instructions
All electric work must be performed by a licensed electrician
and conform to local building codes or, in the absence of
local codes, with the National Electrical Code, and the
instructions given in this manual.
Properly tighten all power lugs.
Do not supply power to the unit until all electrical wiring,
controls wiring, piping, installation, and refrigerant system
evacuation are completed.
The information contained in this manual is intended for
use by an industry-trained, experienced, certified electrician
familiar with the U.S. National Electric Code (NEC) who is
equipped with the proper tools and test instruments.
Failure to carefully read and follow all instructions in this manual can
result in equipment malfunction or property damage.
OPERATION
Do not provide power to or operate the unit if it is flooded
or submerged.
There is risk of fire, electric shock, physical injury or death.
Use a dedicated power source for this product.
There is risk of fire, electric shock, physical injury or death.
Do not operate the disconnect switch with wet hands.
There is risk of fire, electric shock, physical injury or death.
Periodically verify the equipment mounts have not
deteriorated.
If the base collapses, the unit could fall and cause physical injury or death.
Do not allow water, dirt, or animals to enter the unit.
There is risk of fire, electric shock, physical injury or death.
Do not touch the refrigerant piping during or after operation.
It can cause burns or frostbite.
Use inert (nitrogen) gas when performing leak tests or air
purges.
Do not use compressed air, oxygen, or flammable
gases.
Using these substances may cause fire, explosion, and physical injury
or death.
If refrigerant leaks out, ventilate the area before operating the
unit.
If the unit is mounted in an enclosed, low-lying, or poorly ventilated area,
and the system develops a refrigerant leak, it may cause a fire,
electric shock, explosion, physical injury or death.
Do not operate the unit with the panel(s) or protective
cover(s) removed; keep fingers and clothing away from
moving parts.
The rotating, hot, cold, and high-voltage parts of the unit can cause
physical injury or death.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
5
SAFETY INSTRUCTIONS
OPERATION - CONTINUED
Single Zone Art Cool Premier Wall Mounted Installation Manual
To avoid physical injury, use caution when cleaning or
servicing the air conditioner.
Clean up the site after installation is finished, and check
that no metal scraps, screws, or bits of wiring have been left
inside or surrounding the unit.
Do not use the product for mission critical or special purpose applications such as preserving foods, works of art, or
other precision air conditioning applications. The equipment
is designed to provide comfort cooling and heating.
Oil, steam, sulfuric smoke, etc., can significantly reduce the performance
of the unit, or damage its parts.
Turn on the power at least six (6) hours before operation
begins.
Starting operation immediately after turning on the main power switch
can result in severe damage to the compressor(s).
Do not turn off the main power switch after operation has
been stopped.
Wait at least five (5) minutes before turning off the main power
switch, otherwise it may result in product malfunction.
Do not block the inlet or outlet.
Unit may malfunction.
Do not allow water, dirt, or animals to enter the unit.
There is risk of unit failure.
Do not operate the unit with the panel(s) or protective
cover(s) removed; keep fingers and clothing away from moving parts.
Non-secured covers can result in fire due to dust or water in the service
panel.
Periodically verify the equipment mounts have not deteriorated.
If the base collapses, the unit could fall and cause property damage or
product failure.
6
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
TABLE OF CONTENTS
Safety Instruction................................................................................... 3
General Data........................................................................................... 8
Unit Nomenclature................................................................................ 8
Art Cool Premier Unit Specifications.................................................... 9
Electrical..............................................................................................11
R410A Refrigerant.............................................................................. 12
General Installation Guidelines........................................................... 13
Location Selection.............................................................................. 13
Oceanside Applications...................................................................... 14
Mounting Bolt Location....................................................................... 15
Required Clearances.......................................................................... 16
Mounting of Indoor Unit Installation Plate........................................... 18
Mounting of Indoor Unit...................................................................... 19
Piping Preparation.............................................................................. 20
Piping Materials and Handling............................................................ 22
Piping Support, Elbow Usage............................................................. 27
Refrigerant Piping System Layout...................................................... 28
Electrical Wiring................................................................................... 44
General Information and Safety Guidelines........................................ 44
Power Wiring Specifications and Best Practices������������������������������� 45
Controllers.......................................................................................... 47
Indoor Unit Electrical Connections..................................................... 48
Outdoor Unit Electrical Connections................................................... 50
Self Diagnosis Functions ................................................................... 52
LG SIMS - Self Diagnosis Functions ................................................. 54
Troubleshooting................................................................................... 56
Error Codes ....................................................................................... 56
Refrigerant Leaks............................................................................... 59
Installation Checklist............................................................................ 60
Refrigerant Piping Connections.......................................................... 29
Refrigerant Piping System Limitations................................................ 29
Installation Overview.......................................................................... 30
Directional Pipe Formation................................................................. 31
Drain Hose.......................................................................................... 32
Outdoor Unit Connections.................................................................. 33
Indoor Unit Connections..................................................................... 34
Indoor Unit Connections - Conduit Bracket Placement��������������������� 35
Bundling and Cutting Line.................................................................. 36
Refrigerant Piping Insulation.............................................................. 37
Pipe Sleeves at Penetrations............................................................. 39
Leak Test/Soap Method Check........................................................... 40
Evacuation of Lines............................................................................ 41
Finishing Up........................................................................................ 41
Wireless Controller............................................................................. 42
Pump Down, Cooling Only Mode....................................................... 43
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
7
GENERAL DATA
Unit Nomenclature
Single Zone Wall Mount Indoor and Outdoor Units
Single Zone Art Cool Premier Wall Mounted Installation Manual
LA
N
090
HYV
Family
LA= Art Cool Premier/Gallery/Mirror
LS= High Efficiency Wall Mount/Standard/ Mega
Type
N = Indoor Wall Mount Unit
U = Outdoor Heat Pump Unit
Nominal Capacity
(Nominal cooling capacity in Btu/h)
090/091 = 9,000
120/121 = 12,000
180/181 = 18,000
240 = 24,000
300/307 = 30,000
360 = 36,000
Indoor/Outdoor Product
HEV = Mega
HXV = Mega 115V
HYV = Art Cool Premier
HVP = Art Cool Gallery
HSV = Art Cool Mirror, High Efficiency
HV = Standard
HLV = Extended Pipe
Generation
8
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
1
GENERAL DATA
Art Cool Premier Unit Specifications
Table 1: Art Cool Premier Unit Specifications
Type
Art Cool Premier
LA120HYV1
LA180HYV1
LA240HYV1
(LAN120HYV1/
(LAN180HYV1/
(LAN240HYV1/
LAU120HYV1)
LAU180HYV1)
LAU240HYV1)
1,023~11,000~13,785 3,070 ~ 18,200 ~ 29,515 3,070 ~ 22,000 ~ 30,000
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).
Power Input is rated at high speed.
ODU cooling range down to 0ºF with optional wind baffle.
3
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.
4
Sound Pressure levels are tested in an anechoic chamber under ISO Standard 1996.
5
All power/communication cables to be minimum 18AWG, 4 conductor, stranded, shielded or unshielded. If shielded, must be grounded at Outdoor unit chassis only. Must comply with applicable national
code.
1
2
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
9
Product Data
LA090HYV1
(LAN090HYV1/
LAU090HYV1)
Cooling Capacity (Min~Rated~Max) (Btu/h) 1,023~9,000~12,966
0.58
0.80
1.35
1.76
Cooling Power Input1 (kW)
Heating Capacity (Min~Rated~Max) (Btu/h) 1,023~11,000~20,472 1,023~12,000~22,178 3,070 ~ 22,000 ~ 30,709 3,070 ~ 27,000 ~ 35,200
0.71
0.75
1.69
2.19
Heating Power Input1 (kW)
4.54
4.68
3.81
3.61
COP
Maximum Heating Capacity (Btu/h)
Outdoor 17 °F(WB)/Indoor 70 °F(DB)
11,940 (109%)
14,650 (122%)
22,340 (102%)
27,410 (102%)
Outdoor 5°F(WB)/Indoor 70 °F(DB)
11,220 (102%)
13,720 (114%)
19,300 (88%)
23,690 (88%)
Outdoor -13 °F(WB)/Indoor 70 °F(DB)
7,920 (72%)
9,520 (79%)
14,060 (64%)
17,250 (64%)
EER
15.65
13.75
13.48
12.50
SEER
27.5
25.5
24
22
HSPF
12.0
12.0
12.5
12
Power Supply (V / Hz / Ø)
208-230/60/1
ODU Operating Range
Cooling (°F DB)2
14-118
Heating (°F WB)
(-13)-65
IDU Operating Range
Cooling (°F WB)
53-75
Heating (°F DB)
60-86
Indoor Temperature Setting Range
Cooling (°F)
64-86
Heating (°F)
60-86
Unit Data
Refrigerant Type3
R410A
Refrigerant Control
EEV
IDU Sound Pressure4 dB(A)+3
42/36/25/17
47/42/37/29
(H/M/L/Sleep)
ODU Sound Pressure dB(A)
45
57
Unit Weight (lbs)
24/30
34/38
Indoor Unit (Net/Shipping)
77/82
122/131
Outdoor Unit (Net/Shipping)
Power/Communication Cable5
4 x 18
(No. x AWG)
System (Model)
GENERAL DATA
Art Cool Premier Unit Specifications
Table 1: Art Cool Premier Unit Specifications - Continued
Type
Art Cool Premier
LA090HYV1
(LAN090HYV1/
LAU090HYV1)
Single Zone Art Cool Premier Wall Mounted Installation Manual
System (Model)
Fan
Indoor Type (Qty)
Outdoor Type (Qty)
Motor/Drive
Airflow Rate
Indoor - Max/H/M/L (CFM)
Outdoor - Max (CFM)
Piping
Liquid Line (in, OD)
Vapor Line (in, OD)
Condensation Line (OD | ID)
Additional Refrigerant Charge (oz/ft)
Pipe Length (Minimum/Maximum) (ft)5
Piping Length (no add’l refrigerant, ft)5
Max Elevation Difference (ft)
LA120HYV1
(LAN120HYV1/
LAU120HYV1)
LA180HYV1
(LAN180HYV1/
LAU180HYV1)
LA240HYV1
(LAN240HYV1/
LAU240HYV1)
Cross Flow (1)
Propeller (1)
Brushless Digitally Controlled/Direct
547/494/417/283
1,165
1/4
3/8
0.22
6.6/65.6
41.0
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.
10
Art Cool Premier
742/565/424/318
27/32 | 5/8
2,119
777/565/424/318
3/8
5/8
0.38
9.8/98.4
24.6
65.6
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.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL DATA
Electrical
Table 2: Art Cool Premier Electrical Data
Unit Model Nos.
Nom.
Tons
Compressor Compressor(A) Fan Qty
Qty
Cool/Heat
ODU Fan(A)
IDU Fan(A)
MCA(A)
MOP(A)
Art Cool Premier
LA090HYV1
3/4
1
8.3/8.3
1
0.40
0.40
11.2
15
LA120HYV1
1
1
8.3/8.3
1
0.40
0.40
11.2
15
LA180HYV1
1-1/2
1
14.5/14.5
1
0.50
0.30
19.0
25
LA240HYV1
2
1
14.5/14.5
1
0.50
0.30
19.0
25
For component model nos.
Voltage tolerance is ±10%.
Maximum allowable voltage unbalance is 2%.
MCA = Minimum Circuit Ampacity
ODU Fan = Outdoor Unit Fan Motor
IDU Fan = Indoor Unit Fan Motor
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.
Product Data
Table 3: Art Cool Premier Models
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
11
GENERAL DATA
R410A Refrigerant
R410A Refrigerant - 0% Ozone Depleting
Single Zone Art Cool Premier Wall Mounted Installation Manual
R410A refrigerant has a higher operating pressure in comparison to R22 refrigerant and, therefore, all piping system materials installed must
have a higher resisting pressure than the materials traditionally used in R22 systems.
R410A refrigerant is an azeotrope of R32 and R125, mixed at 50:50, so the ozone depletion potential (ODP) is 0.
• Do not place the refrigerant cylinder in direct sunlight. Exposure to direct sunlight can cause the refrigerant cylinder to explode,
resulting in death or severe injury.
•Piping wall thickness must comply with the applicable local, state, and federal codes for the 551 psi design pressure of R410A.
• Do not use any piping that has not been approved for use in high-pressure refrigerant systems.
• Do not heat refrigerant piping more than necessary during installation. Excessive heat can cause the pipe to soften.
•Because R410A is a combination of R32 and R125, the required additional refrigerant must be charged in its liquid state. If the refrigerant is charged in its gaseous state, its composition changes and the system will not work properly.
12
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Location Selection
Selecting the Best Location
DANGER
• Do not install the unit in an area where combustible gas may generate, flow, stagnate, or leak. These conditions can cause a fire, resulting
in bodily injury or death.
• Do not install the unit in a location where acidic solution and spray (sulfur) are often used as it can cause bodily injury or death.
• Do not use the unit in environments where oil, steam, or sulfuric gas are present as it can cause bodily injury or death.
CAUTION
•When the outdoor unit operates in defrost mode, sidewalks or parking lots near the unit may accumulate moisture that can turn to ice, resulting
in slipping and personal injury.
Note:
Note:
To ensure the outdoor unit operates properly, certain measures are required in locations where there is a possibility of heavy snowfall or severe wind
chill 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 4 inches or more on the top of the outdoor unit.
4.Place the outdoor unit on a raised platform at least 20 inches higher than the average annual snowfall for the area. 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.
7.Additionally, the following conditions should be taken into consideration 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.)
Note:
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.
Ambient Air Conditions
WARNING
•Avoid exposing the unit to sources of extreme temperature or gases to prevent serious bodily injury.
Note:
•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, 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.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
13
General Installation Guidelines
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.
•Install a fence to prevent vermin from crawling into the unit or unauthorized individuals from accessing it. Maintain all recommended clearances.
GENERAL INSTALLATION GUIDELINES
Oceanside Applications
Oceanside Applications
Figure 1: Oceanside Placement Using Windbreak
Single Zone Art Cool Premier Wall Mounted Installation Manual
Use of a Windbreak to Shield from Sea Wind
Ocean winds may cause corrosion, particularly on the condenser and
evaporator fins, which, in turn could cause product malfunction or
inefficient performance.
•Avoid installing the outdoor unit where it would be directly exposed
to ocean winds.
•Install the outdoor unit on the side of the building opposite from
direct ocean winds.
•Select a location with good drainage.
•Periodically clean dust or salt particles off of the heat exchanger
with water.
•If the outdoor unit must be placed in a location where it would
be subjected to direct ocean winds, install a concrete windbreak
strong enough to block any winds.
•Windbreak should be more than 150% of the outdoor unit’s height.
There must be 2 to 3-1/2 inches of clearance between the outdoor
unit and the windbreaker for purposes of air flow.
Oceanside Applications
Use of a Building to Shield from Sea Wind
Windbreak
Sea wind
Additional anti-corrosion treatment may need to be applied to the
outdoor unit at oceanside locations.
Figure 2: Placement Using Building as Shield
If a windbreak is not possible, a building or larger structure must
be used to shield the outdoor unit from direct exposure to the sea
wind. The unit should be placed on the side of the building directly
opposite to the direction of the wind as shown in Figure 2.
Building
Sea wind
Building
Sea wind
14
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Mounting Bolt Location
General Mounting
Figure 3: Outdoor Unit Mounting Methods
Securely attach the outdoor unit to a condenser pad, base rails, or
another mounting platform that is securely anchored to the ground
or building structure. Attach the outdoor unit with bolts and nuts on a
concrete or rigid mount. See Figure 3. Follow applicable local codes
for clearance, mounting, anchor and vibration attenuation requirements.
All referenced materials are to be field-supplied. Images are not to scale.
Mounting Platform
Tie-Downs and Wind Restraints
The strength of the Duct-free Split Single Zone Inverter system
frame is adequate to be used with field-provided wind restraint tiedowns. The overall tie-down configuration must be approved by a
local professional engineer.
Bolt
Placement
& Anti-Vibration
Pad
Top of Unit
Foundation
Always refer to local code when designing a wind restraint system.
Piping Connection
Snow and Ice Conditions
In climates that experience snow build-up, place the unit on a raised platform to ensure 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.
CAUTION
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. Ice is a slipping hazard and can cause personal injury.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
15
General Installation Guidelines
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 the outdoor unit on
the wall, or roof top, anchor the mounting base securely to account
for wind, earthquake or vibration.
GENERAL INSTALLATION GUIDELINES
Required Clearances
Proper airflow through the Single Zone outdoor unit coil is critical for correct unit operation. When installing, consider service, inlet and outlet,
and minimum allowable space requirements as illustrated in the diagrams below.
Minimum Clearance Requirements for Single Zone
Single Zone Art Cool Premier Wall Mounted Installation Manual
Outdoor Unit Clearance
Specific clearance requirements in the diagram below are for the single zone wall mount systems. Figure 4 shows the overall minimum
clearances that must be observed for safe operation and adequate airflow around the outdoor unit.
When placing the outdoor unit under an overhang, awning, sunroof or other roof-like structure, observe the clearance requirements (as shown in
Figure 5) for height in relation to the unit. 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 the unit is adequately anchored.
Consult local codes for rooftop mounting requirements.
Figure 4: Outdoor Unit Clearances
Figure 5: Outdoor Unit Sunroof/Awning Clearances
Outdoor Unit Clearance
More than
24
12
Su
12
nro
12
Fe
ob nce o
sta r
cle
s
28
of
24
Unit : inch
More than
12
More than
24
More than
Unit : inch
28
Do not place the unit where animals and/or plants will be in the path of the warm air, or where warm air and/or noise will disturb neighbors.
Indoor Unit Clearance
Follow recommended best practices when choosing an indoor location for the Single Zone indoor unit.
•Keep unit away from any indoor steam or excessive heat.
•No obstacles should be placed around unit.
•Condensation drain (Leakage piping) should be routed away from
the unit.
•
Do not install near doorway.
•Clearance gap between any wall or enclosure and the left or right
side of the unit must be greater than 4 inches.
•From the top of the unit to the ceiling there must be greater than 8
inches of clearance.
•Unit should be at least 6.5 feet from the floor for adequate clearance.
16
More than 4 inches
More than 8 inches
More than
4 inches
At least 6.5 feet from the floor
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Required Clearances
Minimum Clearance Requirements for Single Zone - Continued
See Figure 6 for minimum ODU service access spacing.
Figure 6: ODU Service Access Clearance
Case 1
6 in
s
les
1
11/
19-
1
11/
19-
ch or
6 in ch
ss
Case 2
G
-11
19
Case 3
le
h
inc or
/16 ch
6 in
1/1
1
19-
G
General Installation Guidelines
D
A
C
D
B
C
Case 5
Case 4
D
B
F
B
E
Unit : inch
Case 1
Case 2
Case 3
Case 4
Case 5
D
A
B
C
D
E
F
G
Normal
11-13/16
23-19/32
—
11-13/16
—
—
—
Minimum
3-15/16
9-27/32
—
3-15/16
—
—
39-3/8
Normal
—
—
19-11/16
—
—
—
—
Minimum
—
—
13-25/32
—
—
—
39-3/8
Normal
—
—
19-11/16
11-13/16
—
—
—
Minimum
—
—
13-25/32
3-15/16
—
—
—
Normal
—
—
—
11-13/16
23-19/32
—
—
Minimum
—
—
—
3-15/16
7-7/8
78-3/4
—
Normal
—
23-19/32
—
11-13/16
—
—
—
Minimum
—
9-27/32
—
3-15/16
—
—
—
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
17
GENERAL INSTALLATION GUIDELINES
Mounting of Indoor Unit Installation Plate
Figure 8: Provided Installation Parts
Mounting Installation Plate to Wall
Follow this procedure and best practices when mounting the indoor
unit’s plate to a wall.
Installation plate
Select location carefully. Unit should be anchored to a strong wall to
prevent unnecessary vibration.
Type "A" screw
Type "B" screw
WARNING
•When choosing a location for the wall mount plate, be sure to take
into consideration routing of wiring for power outlets within the wall.
Touching wiring can cause serious bodily injury, or death.
•Use caution when drilling holes through the walls for the purposes
of piping connections. Touching power wiring with tools or bare skin
can cause serious bodily injury, or death.
Type "C" screw
Type "D" screw
Bracket
Wireless controller
holder
Procedure
1. Locate the installation plate and five Type A screws (Figure 8).
2. Position the installation plate horizontally on the wall. Align the
centerline, and use a leveling tool to ensure the plate is level.
(Figure 9).
3. Secure plate to the wall with the five Type A screws (Figure 10).
If mounting on a concrete wall, use field-supplied anchor bolts.
4. Observe the left and right rear piping clearance when drilling into
the wall.
Drilling Piping Hole in the Wall
Figure 9: LAN090HYV1 / LAN120HYV1 Installation Plate Dimensions
Indoor Unit Outline
17
Place a level on raised tab
17-5/16
Left
rear
piping
Ø2-9/16
Right
rear
piping
Ø2-9/16
Installation Plate
1-7/16
2-3/8
Follow the left or right piping clearance recommendations as shown
in Figure 9.
6-11/16
4-13/16
Unit: inch
1. Using a 2 5/8 (ø 65mm) inch hole core drill bit, drill a hole at
6-29/32
8-17/32
either the right or left side of the wall mounting (Figure 10).
•The slant of the hole should be 3/16” to 5/16” from level with the
slant being upward on the indoor unit side and downward
Figure 11: LAN180HYV1 / LAN240HYV1 Installation Plate Dimensions
on the outdoor unit side (Figure 7).
Unit Outline
Place a level on raised tab
2. Finish off the hole as shown with bushing and sleeve
21-11/16
21-5/16
covering. The sleeve and bushing prevents damage to
the tubing/bundling of the piping.
WALL
Indoor
Outdoor
Unit : Inch
3-15/16
7-3/16
2-3/4
7-11/16
Core Drill
Bushing
Sleeve
Figure 10: Installation Plate
Type A Screws
See Refrigerant Piping Connections for Indoor Unit on
page 52 to proceed with piping.
18
Installation Plate
Right
rear
piping
Ø2-9/16
Installation
Plate
Type "A"
Screws (5)
Chassis
Hook
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
1-5/16
Left
rear
piping
Ø2-9/16
13
Figure 7: Drilling Piping Hole
(3/16"~5/16")
Single Zone Art Cool Premier Wall Mounted Installation Manual
Note:
GENERAL INSTALLATION GUIDELINES
Mounting of Indoor Unit
Mounting the Indoor Unit to the Installation Plate
Figure 12: Mounting Unit on Installation Plate
1
Indoor unit
Spacer
Installation plate
2
3”
Figureside
13: Mounting
Unit on Installation
Platethe wall
of the indoor
unit from
Preparing for Piping/Electrical Connection
1. To prepare indoor unit for piping, disengage bottom on indoor unit
from installation plate by loosening screws at the bottom of the
indoor unit.
•This step will separate the indoor unit’s bottom side from the wall
mount in order to route drain hose correctly. See Figure 15 as a
reference of the rear view of the indoor unit.
2. Once hose is properly routed at rear of unit, move the bottom of
the indoor unit towards the installation plate to anchor back to
wall.
3. Optionally, go to Refrigerant Piping Connections section
of this manual to continue with piping connections to the indoor
unit.
4. Optionally, go to Electrical Connections section of this manual to continue with conduit/electrical wiring to the indoor unit.
.
Drain Hose
Holder
L-bracket
Installation Plate
Figure 14: Chassis Cover Removal from Indoor Unit
1
2
Chassis cover
Figure 15: Rear View of IDU
IDU - Rear View
Conduit bracket
“D” screws
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
19
General Installation Guidelines
1. Hook the indoor unit onto the upper portion of the installation
plate [(1) Figure 12].
2. Engage the hooks at the top of the indoor unit with the upper
edge of the installation plate. Ensure that the hooks are properly
seated on the installation plate by moving it left and right.
3. Unlock the Drain Hose Holder (L-bracket) from the chassis and
anchor it between the chassis and the installation plate. Correct
anchoring should separate the bottom of the inside unit from the
wall (Figure 13).
4. Move the bottom of indoor unit towards the installation plate to
anchor to wall [(2) Figure 12]. It helps to press the lower left and
right sides of the unit against the installation plate until the hooks
engage into their slots. You will hear a clicking sound as the
bottom successfully attaches to the installation plate.
5. Finish by inserting and tightening two type “C” screws into the
bottom of the installation plate (Figure 14).
•Pay attention to the positioning of the piping through any wall as
shown in the figure, as you insert the screws to the indoor unit.
GENERAL INSTALLATION GUIDELINES
Piping Preparation
Piping Preparation
Single Zone Art Cool Premier Wall Mounted Installation Manual
WARNING
•
Do not allow the refrigerant to leak during brazing; if the refrigerant combusts, it generates a toxic gas that can cause serious bodily
injury or death.
• Do not braze in an enclosed location, and always test for gas leaks before/after brazing. Trapped gas from enclosed locations can lead
to bodily injury or death.
Single Zone Pipe Connections
1.
Do not use kinked pipe caused by excessive bending in one
specific area on its length.
2. Braze the pipes to the service valve pipe stub of the outdoor unit.
When selecting flare fittings, always use a 45° fitting rated for use with
high pressure refrigerant R410A. Selected fittings must also
comply with local, state, or federal standards.
Figure 17: Creating a Flare Fitting
1. Copper
tube
Creating a Flare Fitting
Slanted Uneven Rough
90°
One of the main causes of refrigerant leaks is defective flared
connections. Create flared connections using the procedure shown in
Figure 17.
1. Cut the pipe to length.
•Measure the distance between the indoor unit and the outdoor unit.
•Cut the pipes a little longer than measured distance.
•Cut the cable 4.9 ft longer than the pipe length.
2A. Remove the burrs.
•Completely remove all burrs from pipe ends.
•When removing burrs, point the end of the copper pipe down to
avoid introducing foreign materials in the pipe.
2B. Slide the flare nut onto the copper tube.
3. Flaring the pipe end.
•Use the proper size flaring tool to finish flared connections as
shown.
•ALWAYS create a 45° flare when working with R410A.
See WARNING on this page.
4. Carefully inspect the flared pipe end.
•Compare the geometry with the figure to the right and dimensions
as detailed in Figure 16.
•If the flare is defective, cut it off and re-do procedure.
•If flare looks good, use dry nitrogen to blow clean the pipe.
Pipe
2A.
Reamer
Point
down
3.
2B.
Bar
"A"
Flare nut
Copper
tube
Bar
Handle
Yoke
Cone
Copper pipe
Clamp handle
4.
Smooth
Red arrow
Inside is shiny with no scratches
Incorrect Flares
Figure 16: Dimensions of the Flare
90° 2
Even length
A
45°
2
R=0.4~0.8
20
Slanted Damanged Cracked Uneven
surface
thickness
Table 4: Flared Connection Dimensions
Pipe
Vapor (in. O.D.) Liquid (in. O.D.)
1/2
1/4
5/8
3/8
“A” in Figure 17
Vapor (in.)
Liquid (in.)
1/8
1/16
1/8
1/16
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Thickness
Vapor (in.) Liquid (in.)
1/8
1/8
1/16
1/8
GENERAL INSTALLATION GUIDELINES
Piping Preparation/Piping Materials and Handling
Figure 18: Tightening the Flare Nuts
Tightening the Flare Nuts
Table 5: Tightening Torque for Flare Nuts.
Pipe size (Inches O.D.)
Tightening torque (ft-lbs)
1/4Ø
13.9 - 18
3/8Ø
24.5 - 30.3
1/2Ø
39.7 - 47.7
5/8Ø
45.5 - 59.2
Width of the flare (A [inches])
1/8
1/8
1/8
1/16
Union
Do not use polyolyester (POE) or any other type of mineral oil as a thread lubricant. These lubricants are not compatible with PVE oil
used in this system and create oil sludge leading to equipment damage and system malfunction.
Loosening the Flare Nuts
Always use two (2) wrenches to loosen the flare nuts.
Piping Materials and Handling
Figure 19: Keep Piping Capped While Storing
Pipes used for the refrigerant piping system must include the specified thickness, and the
interior must be clean.
Do not bend or damage the pipes while handling and storing. Take care not to contaminate
the interior of pipes with dust, moisture, etc. See Table 6 for care of piping.
Table 6: Three Principles of Refrigerant Piping
Principles
Dry
Clean
Airtight
No moisture should be inside the piping.
No dust should be inside the piping.
No leaks should occur.
Moisture
Problems - Significant hydrolysis of refrigerant oil.
- Refrigerant oil degradation.
Caused
- Poor insulation of the compressor.
- System does not operate properly.
- EEVs, capillary tubes are clogged.
Solutions - Remove moisture from the piping.
- Piping ends should remain capped until
connections are complete.
Do not install piping on a rainy day.
- Connect piping properly at the unit’s side.
- Remove caps only after the piping is
cut, the burrs are removed, and after
passing the piping through the walls.
- Evacuate system to a minimum of 500
microns and ensure the vacuum holds at
that level for 24 hours
Dust
- Refrigerant oil degradation.
- Poor insulation of the compressor.
- System does not operate properly.
- EEVs and capillary tubes become
clogged.
- Remove dust from the piping.
- Piping ends should remain capped until
connections are complete.
- Connect piping properly at the side of
the unit.
- Remove caps only after the piping is cut
and burrs are removed.
- Retain the cap on the piping when
passing it through walls, etc.
Leaks
- Refrigerant gas leaks/shortages.
- Refrigerant oil degradation.
- Poor insulation of the compressor.
- System does not operate properly.
- Test system for air tightness.
- Perform brazing procedures that comply
with all applicable standards.
- Perform flaring procedures that comply
with all applicable standards.
- Perform flanging procedures that
comply with all applicable standards.
- Ensure that refrigerant lines are pressure
tested to 550 psig.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
21
General Installation Guidelines
1. When connecting the flare nuts, coat the flare (inside and outside) with polyvinyl ether (PVE)
refrigeration oil only.
2. Initially hand tighten the flare nuts using three (3) or four (4) turns.
3. To finish tightening the flare nuts, use both a torque wrench and a backup wrench.
4. After all the piping has been connected and the caps have been tightened, check for refrigerant gas leaks.
GENERAL INSTALLATION GUIDELINES
Piping Materials and Handling
Single Zone Art Cool Premier Wall Mounted Installation Manual
Brazing Practices
Figure 20: Refrigerant Pipe Brazing
Refrigerant
Piping
It is imperative to keep the piping system free of contaminants and debris such
as copper burrs, slag, or carbon dust during installation. Contaminants can
result in mechanical failure of the system.
Pipe to
be brazed
Pressure-reducing
Valve
Nitrogen
Taping
Valve
All joints are brazed in the field. Duct Free System Single Zone Inverter refrigeration system components contain very small capillary tubes,
small orifices, electronic expansion 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.
•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.
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. Insulation shall be a minimum 1/2″ thick, and thickness may need to be increased based on ambient conditions and local codes.
All insulation joints shall be glued with no air gaps. Insulation material shall fit snugly against the refrigeration pipe with no air space between it and the pipe.
Do not allow insulation passing through pipe hangers, inside conduit, and/or sleeves to 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 should perform 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.
For specific insulation procedures, see Refrigerant Piping Connections section in this installation manual.
22
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Piping Materials and Handling
Selecting Field-Supplied Copper Tubing
Copper is the only approved refrigerant pipe material for use with Duct Free System Single Zone products, and LG recommends seamless
phosphorous deoxidized ACR type copper pipe, hard-drawn rigid type “K” or “L”, or annealed-tempered, copper pipe.
•Drawn temper (rigid) ACR copper tubing is available in sizes 3/8 through 2-1/8 inches (ASTM B 280, clean, dry, and capped).
•Annealed temper (soft) ACR copper tubing is available in sizes 1/4 through 2-1/8 inches (ASTM B 280, clean, dry, and capped).
Tube wall thickness should meet local code requirements and be approved for an operating pressure of 551 psi. If local code does not
specify wall thickness, LG suggests using tube thickness per table below. When bending tubing, try to keep the number of bends to a minimum, and
use the largest radii possible to reduce the equivalent length of installed pipe; also, bending radii greater than ten (10) pipe diameters can minimize
pressure drop. Be sure no traps or sags are present when rolling out soft copper tubing coils.
Table 7: ACR Copper Tubing Material
Seamless Phosphorous Deoxidized
Class
UNS C12200 DHP
Straight Lengths
H58 Temper
Coils
O60 Temper
Table 8: Piping Tube Thicknesses
OD (in)
1/4
3/8
1/2
Material
Rigid Type “K” or “L” and Soft ACR Acceptable
Min. Bend
.563
.9375
1.5
Radius (in)
Min. Wall
.03
.03
.035
Thickness (in)
5/8
3/4
7/8
1-1/8
Rigid Type “K” or “L” Only
2.25
3.0
3.0
.040
.042
.045
1-3/8
1-5/8
3.5
4.0
4.5
.050
.050
.050
General Installation Guidelines
Type
Table 9: ACR Copper Tubing Dimensions and Physical Characteristics1-4
Nominal Pipe
Outside
Diameter (in)
Actual Outside
Diameter (in)
1/4
Drawn Temper
Annealed Temper
Nominal Wall
Thickness (in)
Weight (lb/ft)
Cubic ft per
Linear ft
Nominal Wall
Thickness (in)
Weight (lb/ft)
Cubic ft per
Linear ft
0.250
--
--
--
0.030
0.081
.00020
3/8
0.375
0.030
0.126
.00054
0.032
0.134
.00053
1/2
0.500
0.035
0.198
.00101
0.032
0.182
.00103
5/8
0.625
0.040
0.285
.00162
0.035
0.251
.00168
3/4
0.750
0.042
0.362
.00242
0.042
0.362
.00242
7/8
0.875
0.045
0.455
.00336
0.045
0.455
.00336
1-1/8
1.125
0.050
0.655
.00573
0.050
0.655
.00573
All dimensions provided are in accordance with ASTM B280 – Standard.
Design pressure = 551 psig.
3
ACR Tubing is available as hard drawn or annealed (soft) and are suitable for use with R410A refrigerant.
4
The Copper Tube Handbook, 2010, Copper Development Association Inc., 260 Madison Avenue, New York, NY 10016.
1
2
•Commercially available piping often contains dust and other materials. Always blow it clean with a dry inert gas.
•Prevent dust, water or other contaminants from entering the piping during installation. Contaminants can cause mechanical failure.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
23
GENERAL INSTALLATION GUIDELINES
Piping Materials and Handling
No Pipe Size Substitutions
Single Zone Art Cool Premier Wall Mounted Installation Manual
Use only the pipe size recommended by this installation manual. Using a different size is prohibited and may result in a system malfunction or failure
to work at all.
Figure 21: Installing Piping Above and Below an Obstacle
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 length of the horizontal
section of pipe above or below the obstacle be a minimum of three
(3) times the longest vertical rise (or fall) at either end of the
segment.
Copper Expansion and Contraction
Under normal operating conditions, the vapor pipe temperature of
a Duct Free System can vary as much as 280°F. With this large
variance in pipe temperature, the designer must consider pipe
expansion and contraction to avoid pipe and fitting fatigue failures.
Refrigerant pipe along with the insulation jacket form a cohesive
unit that expands and contracts together. During system operation,
thermal heat transfer occurs between the pipe and the surrounding
insulation.
If the pipe is mounted in free air space, no natural restriction to
movement is present if mounting clamps are properly spaced and
installed. When the refrigerant pipe is mounted underground in a
utility duct stacked among other pipes, natural restriction to linear
movement is present. In extreme cases, the restrictive force of
surface friction between insulating jackets could become so great
that natural expansion ceases and the pipe is “fixed” in place. In this
situation, opposing force caused by change in refrigerant fluid/vapor
temperature can lead to pipe/fitting stress failure.
The refrigerant pipe support system must be engineered to allow
free expansion to occur. When a segment of pipe is mounted
between two fixed points, provisions must be provided to allow pipe
expansion to naturally occur. The most common method is the
inclusion of expansion Loop or U-bends. Each segment of pipe has
a natural fixed point where no movement occurs. This fixed point is
located at the center point of the segment assuming the entire pipe
is insulated in a similar fashion. The natural fixed point of the pipe
segment is typically where the expansion Loop or U-bend should be.
Linear pipe expansion can be calculated using the following formula:
LE = C x L x (Tr – Ta) x 12
LE
C
L
TR
Ta
12
24
=
=
=
=
=
=
Anticipated linear tubing expansion (in.)
Constant (For copper = 9.2 x 10-6 in./in.°F)
Length of pipe (ft.)
Refrigerant pipe temperature (°F)
Ambient air temperature (°F)
Inches to feet conversion (12 in./ft.)
3X
MINIMUM
X
X
3X
MINIMUM
Above an obstacle
Below an obstacle
1. From Table 10 find the row corresponding with the actual length
of the straight pipe segment.
2. Estimate the minimum and maximum temperature of the pipe.
In the column showing the minimum pipe temperature, look up the
anticipated expansion distance. Do the same for the maximum
pipe temperature.
3. Calculate the difference in the two expansion distance values.
The result will be the anticipated change in pipe length.
Example:
A system is installed and the design shows that there is a 100 foot
straight segment of tubing between an indoor unit and the outdoor
unit. In heating, this pipe transports hot gas vapor to the indoor units
at 120 °F. In cooling, the same tube is a suction line returning refrigerant vapor to the outdoor unit at 40 °F. Look up the copper tubing
expansion at each temperature and calculate the difference.
Vapor Line
Transporting Hot Vapor: 100 ft. pipe at 120 °F = 1.40 in.
Transporting Suction Vapor: 100 ft. pipe at 40 °F = 0.40 in.
Anticipated Change in Length: 1.40 in. – 0.40 in. = 1.00 in.
Liquid Line
The liquid temperature remains relatively the same temperature; only
the direction of flow will reverse. Therefore, no significant change in
length of the liquid line is anticipated.
When creating an expansion joint, the joint height should be a
minimum of two times the joint width. Although different types of
expansion arrangements are available, the data for correctly sizing
an Expansion Loop is provided in Table 10. Use soft copper with
long radius bends on longer runs or long radius elbows for shorter
pipe segments. Using the anticipated linear expansion (LE) distance
calculated, look up the Expansion Loop or U-bend minimum design
dimensions. If other types of expansion joints are chosen, design
per ASTM B-88 Standards.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Piping Materials and Handling
See table below for precalculated anticipated expansion for various pipe sizes and lengths of refrigerant tubing.
To find the anticipated expansion value:
1. From the table below, find the row corresponding with the actual feet of the straight pipe segment.
2. Estimate the minimum and maximum temperature of the pipe.
3. In the column showing the minimum pipe temperature, look up the anticipated expansion distance corresponding to the segment length.
Do the same for the maximum pipe temperature.
4. Calculate the difference in the two expansion distance values. The result will be the change in pipe length.
Table 10: Linear Thermal Expansion of Copper Tubing in Inches
1
40°
45°
50°
55°
60°
65°
70°
Fluid Temperature °F
75° 80° 85° 90°
95° 100° 105° 110° 115° 120° 125° 130°
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
Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox.com.
Figure 22: Coiled Expansion Loops and Offsets
L
L
R
L
R
Large Tubing U-bend (>3/4 in.)
Loop
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Small Tubing U-bend (<3/4 in.)
25
General Installation Guidelines
Pipe
Length1 35°
0.04
10
GENERAL INSTALLATION GUIDELINES
Piping Materials and Handling
Table 11: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets
Anticipated Linear
Expansion (LE) (inches)
Single Zone Art Cool Premier Wall Mounted Installation Manual
1/2
1
1-1/2
2
2-1/2
3
3-1/2
4
1/4
Nominal Tube Size (OD) inches
3/8
1/2
3/4
R1
6
7
8
9
L
R1
L2
R1
L2
R1
L2
R1
L2
R1
L2
R1
L2
R1
L2
38
44
50
59
2
9
10
11
13
54
63
70
83
11
12
14
16
66
77
86
101
12
14
16
19
77
89
99
117
14
16
18
21
86
99
111
131
15
17
19
23
94
109
122
143
16
19
21
25
102
117
131
155
17
20
22
26
109
126
140
166
Pipe Bends
When bending soft copper, use long radius bends. Refer to the "Radii of Coiled Expansion Loops and Developed Lengths of Expansion
Offsets” table for minimum radius specifications, as shown above.
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.
Duct-free Single Zone 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 should verify the refrigerant piping system is free
of traps, sagging pipes, sight glasses, filter dryers, etc.
Field-provided Isolation Ball Valves
LG allows the installation of field-supplied ball valves with Schrader ports at each indoor unit. Full-port isolation ball valves with Schrader
ports (positioned between valve and indoor unit) rated for use with R410A refrigerant should be used on both the liquid and vapor lines.
If valves are not installed and a single 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, and placed between six (6) and
twelve (12) inches from the run-out pipe to the upstream main pipe. If ball valves are installed closer to the indoor unit, a section of pipe
becomes a dead zone when the valves are closed where oil may accumulate.
26
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
GENERAL INSTALLATION GUIDELINES
Piping Support, Elbow Usage
Using Elbows
Field-supplied elbows are allowed as long as they are long radius and designed for use with R410A refrigerant. The designer, however,
should be cautious with the quantity and size of fittings used, and must account for the additional pressure losses in equivalent pipe length
calculation.
The equivalent pipe length of each elbow must be added to each pipe segment (Figure 23).
Figure 23: Equivalent Piping Length for Piping Components
Component
Elbow (ft.)
Size (Inches)
1/4
3/8
1/2
5/8
3/4
0.5
0.6
0.7
0.8
1.2
Figure 24: Pipe Hanger Details
General Installation Guidelines
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 24). 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
Figure 25: Typical Pipe Support Location—
potential sagging could occur. Maximum spacing of pipe supports shall meet local codes.
Change in Pipe Direction
If local codes do not specify pipe support spacing, pipe shall be supported:
•Maximum of five feet (5′) on center for straight segments of pipe up to 3/4" outside
diameter size.
•Maximum of six feet (6′) on center for pipe up to one inch (1″) outside diameter size.
•Maximum of eight feet (8′) on center for pipe up to two inches (2″) outside diameter size.
Wherever the pipe changes direction, place pipe clamps 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 25.
Pipe
Clamps
A
B
A + B ≈ 12”–19”
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
27
GENERAL INSTALLATION GUIDELINES
Refrigerant Piping System Layout
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
(Figure 26). Underground refrigerant pipe shall be routed inside a protective sleeve to prevent insulation deterioration. Refer to Figure 27.
Single Zone Art Cool Premier Wall Mounted Installation Manual
Figure 26: Pipe Sleeve Options.
Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation.
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
refrigerant pipe must be located at a level below the frost line.
Figure 27: Typical Arrangement of Refrigerant Pipe and Cable(s) in a
Utility Conduit
Vapor Line
Insulation Material
Liquid Line
Table 12: Utility Conduit Sizes.
Pipe Sleeve
3/8 (1-1/8 )
Vapor Pipe
1/2 (2.02,4)
5/8 (2-1/82,4)
1/4 (1.0)3
4
4
4
3/8 (1-1/8)3
4
4
4
Liquid Pipe1
1
2,3
OD pipe diameter in inches; Values in parenthesis () indicate OD of pipe with insulation jacket.
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) = 1 inch.
1
2
28
Insulation
Material
Min. 18 Gauge
Power/Communication
Cable
Table 13: Heat Pump Unit Refrigerant Pipe Connections
(All Brazed Type)
Model
LAU090HYV1, LAU120HYV1
LAU180HYV1, LAU240HYV1
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Liquid Conn. Vapor Conn.
(inches)
(inches)
1/4
3/8
3/8
5/8
REFRIGERANT PIPING CONNECTIONS
Refrigerant Piping System Limitations
Connection Limitations
Single zone systems consist of one outdoor unit and one indoor unit.
One of the most critical elements of a single zone system is the refrigerant piping. Table 13 lists pipe length limits that must be followed in the
design of a Single Zone Wall Mount refrigerant pipe system. Refer to Figure 29 for maximum length and elevation of piping.
Table 14: Art Cool Premier Refrigerant Piping System Limitations
Longest total equivalent piping length
Pipe Length
(ELF = Equivalent Length
of pipe in Feet)
LA090HYV1 / LA120HYV1
LA180HYV1 / LA240HYV1
≥ 20 inches
≥ 20 inches
41 feet
24.6 feet
32.8 feet
65.6 feet
32.8 feet
65.6 feet
0.22
0.38
65.6 feet
6.6 feet
Shortest total equivalent piping length
Distance between fittings and indoor or
outdoor units
No additional refrigerant
Refrigerant Piping Connections
Elevation
If outdoor unit is above indoor unit
(All Elevation Limitations
are Measured in Actual
If outdoor unit is below indoor unit
Feet)
Additional Refrigerant Needed (oz/ft)
98.4 feet
9.8 feet
Figure 28: Example System Layout with LA120HYV1
Unit = Feet
Max Length = A
Max Elevation = B
65.62
32.81
A
Outdoor unit
65.62
A
B
B
Outdoor unit
32.81
Indoor unit
Indoor unit
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
29
REFRIGERANT PIPING CONNECTIONS
Installation Overview
Installation
Duct Free Single Zone Wall Mounts are a one-to-one system. There is a direct piping connection between the outdoor
Figure 29: Installation and Piping Connection Overview
unit and the indoor unit. Figure 29 Illustrates the basic pipe
connections between the outdoor and indoor unit. Refer back
to this illustration as you proceed with pipe connections. This
illustration shows the indoor unit being installed at a higher
position than the outdoor unit. However, should you install the
outdoor unit at a higher position than the indoor unit, the basic
pipe connections should be the same.
Refer back to the tables within the “Connection LimInstallation plate
itations” section on the previous page for specific length
Sleeve
limitations in conjunction with outdoor unit and indoor unit
Bushing-Sleeve
positioning.
Single Zone Art Cool Premier Wall Mounted Installation Manual
Installation Overview
Putty(Gum Type Sealant)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
•As you proceed with the piping connections be sure to adhere
to pipe support spacing lengths as shown in Figure 30 below.
Refer back to “Pipe Supports” section for in-depth information
regarding using elbows, clamps and pipe supporting materials.
•Always adhere to local codes regarding piping and accurate
support spacing along the outdoor pipe line.
Vinyl tape (Wide)
• Apply after carrying out a
drainage test.
Saddle
Gas side piping
Liquid side piping
Additional drain pipe
Air Inlet
Figure 30: Pipe Support Lengths - Outdoors
Air Outlet
Base Plate
Vinyl tape (Narrow)
Drain Hose
Connecting cable
Tubing Cover
Additional accessories/parts/tools that will be
needed for installation but are not provided by LG.
Pipe
Clamps
A
B
A + B ≈ 12”–19”
30
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
REFRIGERANT PIPING CONNECTIONS
Directional Pipe Formation
Pipe Bundling
Figure 31: Cutaway of Proper Pipe and Cable Bundling
See Figure 31 for proper pipe and cable bundling. Note the placement
of the piping along with the necessary insulation material.
1. Be sure to wrap each pipe with proper insulation material.
2. Secure the piping by wrapping vinyl tape around the pipe. Use the
narrow size tape for wrapping the actual pipe.
3. You can include the drain hose in the bundled piping and wrap all of
them together using the wider vinyl tape as shown in Figure 32. The
end of the drain hose outlet must be routed above ground.
Vapor Line
Insulation Material
Liquid Line
Pipe Sleeve
Insulation
Material
Min. 18 Gauge
Power/Communication
Cable
Indoor Unit Installed Above Outdoor Unit
Indoor Unit Installed Below Outdoor Unit
Figure 32: Bundling and Taping
Refrigerant Piping Connections
1. Refer to Figure 33 while following the procedures below.
2. Tape the piping, drain hose and connecting cable from down to up.
3. Secure the taped piping along the exterior wall using pipe
clamps.
4. Create trap above the electrical connections cover to prevent water
penetrating electrical components and wiring.
Bundling Piping
Drain hose
1. Refer to Figure 34 while following the procedures below.
2. Tape the piping, drain hose and connection cable from down to up.
3. Secure the taped piping along the exterior wall using pipe
clamps.
4. Create trap above the electrical connections cover to prevent water
entering the room.
Pipe
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Figure 33: IDU Above ODU - Piping and Trap
Indoor Unit Installed ABOVE
Outdoor Unit - Piping/Trap
Seal small openings
around pipings with a
gum type sealant.
Pipe Clamps
to Secure Pipe
Against Wall
Figure 34: IDU Below ODU - Piping and Trap
Indoor Unit Installed BELOW
Outdoor Unit - Piping/Trap
Connecting cable
Pipings
Taping
Seal a small opening
around the pipings
with gum type sealant.
Trap
Drain hose
Pipe Clamps
to Secure Pipe
Against Wall
Trap
Trap is required to prevent water
from entering into electrical parts.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
31
REFRIGERANT PIPING CONNECTIONS
Drain Hose
Single Zone Art Cool Premier Wall Mounted Installation Manual
Drain Hose Guidelines
Refer to the diagrams below and follow proper installation and the running of the drain hose along the pipe installation line to avoid leakage. Once
drain hose is set in place, always follow with evacuation and leakage testing of all piping to be sure all piping is properly sealed. Re-check and retest
as necessary.
Figure 36: Correct Slope Angle for Drain Hose
Drain hose is routed from the indoor unit through the structure
Incorrect Drainage Setup
(wall) to the outdoor. It should slope at an angle where it is higher at the indoor unit and lower toward the outdoor area, thereby
letting gravity push any condensation down and out. See Figure
Upward slope
35 for proper drainage slope. Avoid piping the drain hose as
to outdoor
shown in Figure 36. These methods are incorrect and can cause
Indoor Unit
can cause indoor
leakage at the indoor unit site.
leaks!
Water
leakage
Figure 35: Correct Slope Angle for Drain Hose
Accumulated
drain water
Air
Correct Drainage Slope
Downward slope
to outdoor
for proper drainage
Indoor Unit
Water
leakage
Indoor
Unit
Piping
Waving
Tip of drain hose
dipped in water
Indoor Unit
Water
leakage
Drain Hose
32
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Ditch
Less than
2 Inch gap from ground
REFRIGERANT PIPING CONNECTIONS
Outdoor Unit Connections
Single Zone Wall Mount Outdoor Unit Connections
Figure 37: 9k/12k ODU Cover Removal
Figure 38: 18k/24k ODU Cover Removal
Terminal Block
Terminal Block
Cover
Terminal
Block Cover
Tubing
Cover
•Ensure you do not add any contaminants.
•Tighten the flare nut initially by hand.
5. Finish tightening the flare nut with a
torque wrench until the wrench clicks.
Follow torque guidelines in Table 15.
Bracket for
Main Power Cables
When tightening the flare nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
Do not thread liquid or gas piping through bracket used to hold main
power cables.
Table 15: Torque Wrench Tightening
Outside Diame- Torque (lbs-ft)
ter (inches)
13-18
1/4
24.6-30.4
3/8
39.8-47.7
1/2
45.6-59.3
5/8
71.6-87.5
3/4
Figure 40: 9k/12k Refrigerant Pipe Connections
Figure 39: Refrigerant Pipe Flare Connection
Figure 41: 18k/24k Refrigerant Pipe Connections
Outdoor Unit
Liquid Pipe
(Smaller diameter)
Outdoor unit
Vapor side piping
(Larger diameter)
Liquid side piping
(Smaller diameter)
Torque Wrench
Bracket for
Main Power
Cables
Torque wrench
Vapor Pipe
(Larger diameter)
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
33
Refrigerant Piping Connections
1. Remove the tubing cover by loosening the
fastening screws. See Figure 38 or Figure
38, as appropriate for your unit.
2. Align the center of the refrigerant pipe
and corresponding connection as
shown in Figure 39.
3. Place a couple of drops of refrigerant
oil on the opening rim of the flare
before assembling.
4. Refer to Figure 40 or Figure 41 for
connecting the refrigerant pipe to the
outdoor unit.
REFRIGERANT PIPING CONNECTIONS
Indoor Unit Connections
Single Zone Art Cool Premier Wall Mounted Installation Manual
Piping to Indoor Unit
Follow the steps below and refer to the illustrations on this page to connect piping to the Single Zone indoor unit. To see specific bundling of
piping and drain hose, see Section, “Bundling and Cutting Line” on page 36. Also, refer back to “Drain Hose Guidelines”
section for proper drainage slope during piping procedure.
4. From the rear of the indoor unit, carefully bend the copper pipe
1. Open the front panel of the indoor unit (Figure 42).
tubing holder away from the unit to expose for conduit bracket
2. Unscrew the three (3) screws at the bottom of the chassis cover.
installation area.
3. Remove the chassis cover, being careful not to scratch the main
5. Remove the pipe port cover.
horizontal vane.
6. If conduit bracket has not been installed yet, follow Conduit
Figure 42: Removing Chassis Cover from Indoor Unit.
Bracket Placement section instructions on next page before going
to next step.
7. Position the bundled tubing by bending slowly downward first, as
shown in Figure 43.
•Bending the copper tubing directly left or right, without bending
downward first, may cause damage.
•Always secure the piping using the piping cover.
Do not bend the pipes towards the front of the unit as this may
•
damage the unit.
Detach screws
Figure 43: Bending Pipe Tubing at Rear of Indoor Unit.
Chassis cover
Do not bend tubing
directly backwards
or to the sides
without bending
downward first!
This may cause
damage!
IDU Rear View
Unfold
slowly
downward
Correct
Bend from
downward position
34
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Incorrect
REFRIGERANT PIPING CONNECTIONS
Indoor Unit Connections - Conduit Bracket Placement
Piping to Indoor Unit - Conduit Bracket Placement
For specific bundling (taping) techniques of the Pipe and Drain Hose,
see Section, “Bundling and Cutting Line” on page 36.
Figure 44: Installing Bracket for Conduit
IDU - Rear View
Figure 45: L-type Conduit Attachment to Conduit Bracket
Refrigerant Piping Connections
1. Follow steps 1 through 5 on the previous page to position piping
at the rear of the indoor unit. Before positioning the refrigerant
tubing permanently at the rear of the indoor unit, you must install
the conduit bracket.
Art Cool Premier indoor units require an additional conduit “bracket/
nut” to be installed at the rear. This allows the electrical connections
within the elbow (L-type) conduit (Figure 45) to be held in place at
the back of the unit.
2. Set the conduit wiring by using the bracket and “D” screws from
the accessory kit. This must be done prior to permanent placement of the piping to the rear of the unit, otherwise you won’t be
able to reach the conduit once piping and drain hose are in place
and anchored.
•See Figure 44 for a detailed view of the installation.
Conduit bracket
“D” screws
Conduit
Bracket
Attached to Rear
of IDU
Elbow type
(L-type) Conduit
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
35
REFRIGERANT PIPING CONNECTIONS
Bundling and Cutting Line
Single Zone Art Cool Premier Wall Mounted Installation Manual
Piping and cabling must be insulated and bundled together correctly for safety and usage. Follow proper methods and procedures as outlined
here and on the next pages to ensure installation and piping are correctly installed.
As shown in Figure 46, the connection pipe, along with the indoor
unit pipe are fully encased in insulation material.
1. Bind together the two pipes, using vinyl tape. Make sure there
are no gaps during the binding.
2. Be sure the tube cutting line is placed upward (Figure 47).
3. Verify that rear piping house section is wrapped with vinyl tape.
•Use a narrow type of vinyl tape for this step.
4. Continue to wrap the Indoor unit pipe as connected to the outdoor
connection pipe as shown in Figure 48.
Figure 46: Piping with Insulation Material
Figure 47: Correct Cutting Line Placement
Figure 48: Wrapping Connection Pipe to Indoor Unit’s Pipe
Cutting Line
Insulation material
Indoor unit pipe
Connection pipe
Wrap with vinyl tape
Vinyl tape (wide)
Connecting cable
Pipe
Vinyl tape(narrow)
Cutting Line
Gas Pipe
Liquid Pipe
Correct
Incorrect
5. Using a wider vinyl tape, bundle the piping and drain hose together (Figure 49).
•Tape should be sufficient to cover the piping in order to fit into the
rear piping housing area at the back of the indoor unit (Figure 49
and Figure 50).
Figure 49: Bundling Pipe and Drain Hose, Rear of IDU
Wrap with vinyl tape
Pipe
Figure 50: Bundling and Placement at Rear of IDU
Drain hose
Drain hose
Tape
Conduit
Drain hose
Connecting pipe
36
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Vinyl tape(wide)
REFRIGERANT PIPING CONNECTIONS
Refrigerant Piping Insulation
Refrigerant Piping Insulation
To prevent heat loss/heat gain through the refrigerant piping, all refrigerant piping including liquid lines and vapor lines must be insulated
separately. Insulation must be a minimum 1/2″ thick, and thickness may need to be increased based on ambient conditions and local codes.
All refrigerant piping including field-provided isolation ball valves, service valves, and elbows must be completely insulated using closed-cell
pipe insulation. All insulation joints must 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 direct sunlight and deterioration-producing elements must be properly protected with a PVC-aluminum vapor barrier jacket, or alternatively placed in a weather-resistant enclosure
such as a pipe rack with a top cover. The design engineer should perform calculations to determine if the factory-supplied insulation jackets
have sufficient thickness to meet local codes and to avoid sweating at job site conditions. Maximum refrigerant pipe temperature is 227 °F;
minimum refrigerant pipe temperature is -4 °F. Add additional insulation if necessary.
D
Figure 52: Typical Insulation
Butt-Joint at Indoor Unit Casing
Refrigerant Piping Connections
Figure 51: Typical Pipe Insulation, Power Wire and
Communications Cable Arrangement
Figure 53: Typical Refrigerant
Flare Fitting Insulation Detail
C
D
A
B
E
A Liquid Pipe
B Gas Pipe
C Power Wiring
D Insulation
Surface of
Indoor Unit Casing
Field-Provided
Pipe Insulation
E Communication Cables
• Do not insulate gas and liquid pipes together
as this can result in pipe leakage and malfunction due to extreme temperature fluctuations.
•Be sure to fully insulate the piping connections.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
37
REFRIGERANT PIPING CONNECTIONS
Refrigerant Piping Insulation
Minimum Refrigerant Pipe Ethylene Propylene Diene Methylene (EPDM) Insulation Wall Thickness Requirements
Single Zone Art Cool Premier Wall Mounted Installation Manual
Follow locals codes when selecting EPDM insulation wall thickness.
Table 16: Insulation Guidelines for Typical and Special Circumstances
Air-conditioned location
Classification
1. Typical location
2. Special location
ø1/4 inch
1/2 inch
1/2 inch
Liquid pipe
ø3/8 inch
≥ø1/2 inch
1/2 inch
1/2 inch
ø3/8 inch
ø1/2 inch
ø5/8 inch
1/2 inch
ø3/4 inch
3/4 inch
ø7/8 inch
ø1 inch
Vapor pipe
ø1-1/8 inches
ø1-1/4 inches
ø1-3/8 inches
3/4 inch
1 inch
ø1-1/2 inches
ø1-3/4 inches
Non-air conditioned location
3. Typical location
4. Special location
1/2 inch
1/2 inch
1/2 inch
1/2 inch
3/4 inch
1 inch
1 inch
1. Typical location (Air-conditioned location): When the piping passes through an indoor area where the indoor unit operates.
•Apartment, classroom, office, mall, hospital, etc.
2. Special location (Air-conditioned location):
1. When the location is air conditioned, but there is severe temperature/humidity difference due to high ceilings.
•Church, auditorium, theater, lobby, etc.
2. When the location is air conditioned, but internal temperature/humidity are high.
•Bathroom, swimming pool, locker room, etc.
3. Typical location (Non-Air conditioned location): When the piping passes through an indoor area where the indoor unit
does not operate.
•Hallway or a dormitory or school, etc.
4. Special location (Non-Air conditioned location): If conditions 1 and 2 below are present.
1. When the piping passes through an indoor area where the indoor unit does not operate.
2. When the humidity is high and there is no air flow in the location where the piping is installed.
•The thickness of the above insulation material is based on heat conductivity of 0.61 Btu/in/h/ft2/°F.
38
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
REFRIGERANT PIPING CONNECTIONS
Pipe Sleeves at Penetrations
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.
Figure 54: Pipe Sleeves at Penetrations
Outside wall
Inside wall (concealed)
C
A
Outside wall (exposed)
D
E
B
A
B
B
I
Floor (fire-resistance)
D
I
G
F
J
D
B
G
B
H
A
40 in
40 in
When filling an access hole with mortar, cover the
area with steel plate so that the insulation will not
fall through. For this area, use fire-resistant
materials for both the insulation and cover.
Do not use vinyl cover.
Diameter of penetrations shall be determined by pipe diameter plus the thickness of the insulation.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
39
Refrigerant Piping Connections
Area between fire-resistant
insulation and boundary wall
Roof pipe shaft
Sleeve
Insulation
Lagging
Caulk
Band
Water-resistant layer
Sleeve with edge
Lagging
Mortar or other fire-resistant caulk
Fire-resistant insulation
REFRIGERANT PIPING CONNECTIONS
Leak Test/Soap Method Check
Leak Test
Single Zone Art Cool Premier Wall Mounted Installation Manual
Perform the leak test by pressurizing nitrogen gas to 550 psi on both the liquid and gas pipes. Test with the piping service valves closed. If
the pressure does not drop for twenty-four (24) hours, the system passes the test. If the pressure drops, there is a nitrogen leak in the system. Find the leak, repair, and then test again.
Figure 55: Leak Test Diagram.
Leak Test Using Nitrogen Tank
Manifold Valve
Indoor Unit
Piping Bundle
Pressure
Gauge
Lo
Hi
Charge Hose
Nitrogen Gas
Tank (Upright
Position)
1. Connect the manifold valve (which includes the pressure gauges), along with dry nitrogen gas cylinder to the service valves
using charge hose (Figure 55).
2. Pressurize the system to maximum 550 P.S.I.G. with dry nitrogen
gas and close the cylinder valve when the gauge reading reaches
550 P.S.I.G.
DANGER
Using combustible gases such as oxygen runs the risk of fire and/or
explosion resulting in death.
Using combustible gases such as oxygen runs the risk of fire, explosion
and personal injury. Use inert gas (nitrogen) when checking plumbing
leaks, cleaning or repairs of pipes, etc.
Outdoor Unit
Soap Water Method - Leak Testing
1. Remove the caps from the 2-way and 3-way valves. See Figure 53.
2. To open the 2-way valve turn the valve stem counter-clockwise
approximately 90°, wait for about 2~3 sec, and close it.
3. While running the nitrogen gas tank hookup, apply a soap water
or a liquid neutral detergent on the indoor unit connection or
outdoor unit connections by using a soft brush.
4. While running the pressure gauge system, observe the connections for any leakage.
•If you see bubbles appearing at any of the connection points/joints
(at either inside and outside units), it is an indication of leakage.
5. Make a note of where the leaks are coming from along the liquid
and gas piping.
6. Disengage the nitrogen pressure by loosening the charge hose
connector at the Nitrogen cylinder (Figure 55 above).
7. Once system pressure is reduced back to normal range, disconnect hose from the cylinder.
8. At this point you will need to make all repairs to connections and
piping where bubbles were observed.
9. Once all repairs are made, repeat soap testing using nitrogen
cylinder and check for any further leaks.
10.Once system is leak free, proceed to Evacuation steps.
40
Pressure Gauge Hookup
•To avoid nitrogen entering the refrigerant system in a liquid state,
the top of the cylinder must be higher than its bottom when you
pressurize the system.
•Be sure a cylinder is used in a vertical standing position.
Leak Test Ambient Temperature Correction
If the ambient temperature changed between the time when
pressure was applied and when the pressure drop was checked,
adjust results by factoring in approximately 1.45 psi for each 2°F of
temperature difference.
Correction formula = (Ambient temperature when pressure was applied - Ambient temperature when pressure drop was checked) x 0.01.
Example:
When pressure (550 psig) was applied, the ambient temperature
was 80.6 °F; 24 hours later when pressure drop (540 psi) was
checked, ambient temperature was 68 °F.
Thus, 80.6 - 68 x 0.01 = 0.126. In this case, the pressure drop of
0.126 was due to temperature difference, therefore, there is no leak
in the refrigerant piping system.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
REFRIGERANT PIPING CONNECTIONS
Evacuation of Lines
Finishing Up
Evacuation
After successful leak testing has been performed, follow Evacuation procedure. Follow the same steps for charge hose hookup to the system.
See Figure 55 on previous page for proper hookup.
Procedure
4. Turn off the pump and leave the connections secured to the two
service valves.
5. Wait 5 minutes.
6. If the system fails to hold 500 microns or less, check all connections for tight fit and repeat the evacuation procedure.
7. Once, desired vacuum is reached, close the “Lo” knob of the
manifold valve and stop the vacuum pump.
8. Proceed to Finishing the Job section, below.
Finishing the Job
Once the Evacuation procedure has been performed, follow the steps below to turn off all valves at the outdoor unit and safely disengage the
manifold valve, along with the vacuum pump. Refer back to the illustrations and tables on the previous pages as you go through the steps below.
Procedure
1. Using a wrench, turn the valve of the liquid stem counter-clockwise to fully open the valve (Figure 55 on previous page).
2. Turn valve of gas stem counter-clockwise to fully open valve.
3. Loosen the charge hose connected to the gas side service port
slightly to release the pressure, and then remove the hose.
4. Replace the flare nut and its cap on the gas service port and
fasten the flare nut securely using an adjustable wrench.
•This process is very important to prevent leakage from the system.
5. Replace the valve caps at both gas and liquid side service valves
and then fasten them tightly.
•Once done, this will complete the air purging process with a
vacuum pump.
Charging
Each outdoor unit is factory charged (nameplate charge) for the
evaporator as well as a standard 41 ft line. Any time a line set
is used that is longer then the standard 41 ft line set length, the
refrigerant charge has to be adjusted.
You must adjust the charge based on how many feet of piping
are added based on 0.22 oz. of R410A per foot for 9k/12k units
and 0.38 oz for 18k/24k units. The factory charge accommodates
pipe lengths up to the standard length without requiring refrigerant
removal.
Test Run
After leakage testing, and evacuation procedure the system should
be ready to start up for a test run. Follow the guidelines below for
proper procedure.
•Check that all tubing, piping and wiring are properly connected.
•Make sure that the gas and liquid service valves are fully open.
•Start up the system and do a test run.
•As system is up and running verify all is in working order and make
notes as needed to work around any issues that might crop up.
If you are uncertain of the unit charge, reclaim, evacuate and weigh
in the correct charge using the unit nameplate (capacity) charge
adjusting for line sets longer or shorter than 41 ft. This will prevent any
interruptions to the functioning of the unit and possible damage.
Example: A 50ft line set is used when installing a 12k unit-9 additional feet x 0.22 oz per ft = Add 1.98 oz of R410A
Table 17: Charging - Additional Refrigerant
Pipe Size
Liquid
Standard
Length (ft)
Max.
Elevation (ft)
Max.
Length (ft)
Min.
Length (ft)
Additional
Refrigerant If
Longer Than 41 ft.
(oz/ft)
3/8
1/4
41
32.8
65.6
6.6
0.22
5/8
3/8
24.6
65.6
98.4
9.8
0.38
Capacity
(Btu/h)
HYV1
Vapor
9k, 12k
18k, 24k
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
41
Refrigerant Piping Connections
1. Confirm that the “Lo” knob of the manifold valve is open. Refer
back to Figure 55.
2. Confirm that the “Hi” knob of the manifold valve is left closed.
3. Run the Vacuum pump.
•Operate pump until system is evacuated down to 300 microns.
•Run pump an additional 15 minutes after reaching micron level.
The duration of the operation of the vacuum pump will vary according to pipe length and the capacity of the pump. Refer to Table 16 for
accurate time duration.
REFRIGERANT PIPING CONNECTIONS
Wireless Controller
Figure 56: Wireless Controller - Installing Batteries
Single Zone Remote Controller - Rear View
Battery
Cover
Battery Cover
Tab
Single Zone Art Cool Premier Wall Mounted Installation Manual
1. Push down on tab
2. Lift cover
3. Insert
batteries
42
3
Installing Batteries into Wireless
Controller
As part of test running, you will need to insert batteries and power on
the wireless controller. Follow the steps below to insert the batteries.
For information on using the wireless controller, refer to its owner’s
manual.
Procedure
1. The wireless controller needs two AAA (1.5V) batteries (non-rechargeable) for operation. Remove the battery cover from the back
of the wireless controller (Figure 56).
•Push downward on the tab at the top of the battery cover and then
lift up to remove.
2. Insert the two new batteries.
•Align batteries by the (+) and (-) sides.
•The interior battery compartment of the wireless controller will have
clear markings for the (+) and (-) placement.
3. Verify that the batteries have “clicked” into the compartment and
are firmly engaged with the contacts on either side of them.
4. Reattached the back cover of the wireless controller.
5. Proceed with powering on the wireless controller and usage as
needed.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
REFRIGERANT PIPING CONNECTIONS
Pump Down, Cooling Only Mode
Never air purge with refrigerant as it can lead to refrigerant leakage which can cause bodily harm and injury, especially if inhaled.
Use a vacuum pump that can evacuate down to 500 microns.
1. If moisture remains in the piping after the system is evacuated for two (2) hours, break the vacuum (down to 7.5 psi with nitrogen gas).
2. Evacuate the system again with the vacuum pump for at least one (1) hour to 500 microns.
3. If the system does not reach 500 microns within two (2) hours, repeat the vacuum break and evacuation procedure until the gauge does
not rise.
Pump Down Procedure
1. Place the system in cooling mode. If needed, refer to the section
below for proper steps to place the unit into Cooling Mode.
2. Connect a low-pressure gauge with manifold hose to the charge
port on the gas line service valve.
3. Open the gas line service valve halfway.
4. Purge the air in the manifold hose using the refrigerant.
5. Close the liquid line service valve all the way.
6. Turn on the unit’s power switch and start the cooling mode
operation.
7. Observe the pressure gauge reading. When it gets to 1 to 0.5 kg/
cm2G (14.2 to 7.1 P.S.I.G), fully close the gas line valve and then
immediately turn the unit off.
•Pump down procedure is complete at this time and all refrigerant
should be collected into the outdoor unit.
Enabling Cooling Only Mode
Before performing the Pump Down procedure, the system must be in
Installer Mode and then must be placed into Cooling Only Mode.
1. Turn off the IDU by pointing the IDU wireless controller at the
IDU infrared receiver and press the OFF button on the wireless
controller.
2. Simultaneously press the recessed Reset button (small hole) and
the JET MODE buttons.
3. To activate Cooling Only mode, set the code to 45 on the wireless
controller display and press the Power-ON button.
4. The IDU should beep to acknowledge that code has been
received.
5. Remove system power at the ODU power circuit breaker. Wait for
a minimum of 30 seconds.
6. Reapply power to the system at the ODU power circuit breaker.
Do not inhale or handle refrigerant directly. Doing so may cause
bodily harm and injury.
Perform Pump Down procedure only in the cooling mode.
Disabling Cooling Only Mode
After the Pump Down procedure is successfully completed, disable
Cooling Only Mode to enter normal operating mode. Follow the
procedure below.
1. Turn off the IDU by pointing the IDU wireless controller at the
IDU infrared receiver and press the OFF button on the wireless
controller.
2. Simultaneously press the Reset button (small hole) and JET
MODE buttons.
3. To deactivate Cooling Only mode, set the code to 46 on the
wireless controller display and press the Power-ON button.
4. The IDU should beep to acknowledge that code has been
received.
5. Remove system power at the ODU power circuit breaker. Wait for
a minimum of 30 seconds.
6. Reapply power to the system at the ODU power circuit breaker.
•Once the system is in Installer Mode (with Cooling Only Mode initiated), automatic operation is suspended.
•Once Cooling Only Mode is disabled, the unit will return to normal
operation.
•Installer Code cannot be entered if the indoor unit is running. The
indoor unit must be powered off.
•WLAN Module’s communication time will lag by about 1 minute after
unit is turned back on and in normal operating mode.
•Entire lock or Mode lock cannot be set if you set heating or automatic operation through the central controller.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
43
Refrigerant Piping Connections
This procedure is performed when a unit has to be relocated or the refrigerant circuit is serviced. “Pumping down” is a term used to mean
collecting all refrigerant into the outdoor unit without the loss of any refrigerant. Follow the procedure and guidelines below to safely collect
refrigerant back into the outdoor unit. Always adhere to and be familiar with local codes regarding the handling of refrigerant.
The system must be placed in Cooling mode in order to proceed with the pump down procedure.
ELECTRICAL WIRING
Single Zone Art Cool Premier Wall Mounted Installation Manual
General Information and Safety Guidelines
•All power wiring and communication cable installation must be performed by trained service providers working in accordance with local,
state, and National Electrical Code regulations related to electrical
equipment and wiring, and following the instructions in this manual.
Electric shock can cause physical injury or death.
•Undersized wiring may lead to unacceptable voltage at the unit and
may cause a fire hazard. Fire can cause physical injury or death.
•Properly ground the outdoor and indoor units. Ground wiring must
always be installed by a trained technician. Ground wiring is required to
prevent accidental electrical shock during current leakage. Incorrect
grounding can cause electric shock, physical injury, or death.
•
Do not connect ground wire to refrigerant, gas, or water piping; to lightning rods; to telephone ground wiring; or to the building
plumbing system. Failure to properly provide a National Electrical
Code-approved earth ground can result in electric shock, physical injury, or death.
•Verify that the branch switch and circuit breaker are set to OFF before installing the wiring system. Electric shock can cause physical
injury or death.
•Install appropriately sized breakers/fuses/overcurrent protection
switches and wiring in accordance with local, state, and National
Electrical Code regulations related to electrical equipment and wiring, and following the instructions in this manual. Using an oversized
breaker or fuse may result in electric shock, physical injury or death.
44
•Consider ambient conditions (temperature, direct sunlight, inclement
weather, etc.) when selecting, installing, and connecting the power
wiring.
•Properly ground the outdoor and indoor unit. Improperly grounded
wire can cause communication problems from electrical noise, and
motor current leakage. Ground wiring must always be installed by a
trained technician.
•If the system operates in reversed phase, it may damage the compressor and other components.
•If there is a possibility of reversed phase, phase loss, momentary blackout, or the power goes on and off while the system is
operating, install a field-supplied phase loss protection circuit.
•
Do not connect ground wire to refrigerant, gas, or water piping; to lightning rods; to telephone ground wiring; or to the building
plumbing system. Failure to properly provide a National Electrical
Code-approved earth ground can result in property damage and
equipment malfunction.
•Install appropriately sized breakers/fuses/overcurrent protection
switches and wiring in accordance with local, state, and National
Electrical Code regulations related to electrical equipment and wiring, and following the instructions in this manual. Using an oversized
breaker or fuse may result in equipment malfunction and property
damage.
•Use only copper wiring that is stranded and shielded with the wires
separately insulated.
• Do not use a multi-conductor cable with more than five (5) wires
in one (1) core.
•Power wiring and communications cable sizes must comply with applicable federal UL/ETL, state, and local codes.
•
Do not operate the air conditioning system until the refrigerant
piping installation is complete. Operating the system before refrigerant piping is finalized may damage the compressor.
•Install a main shutoff switch or circuit breaker that interrupts all power sources simultaneously (circuit breaker should be resistant to
electromagnetic currents).
•Use ring or spade terminals to attach the wiring. Verify that all power
wiring and communications cable terminals are securely attached.
Ensure enough slack is included in the wiring and cables to avoid
damaging the connections.
•Use a conduit to protect the power wiring.
•Undersized wiring may lead to unacceptable voltage at the unit and
may cause unit malfunction.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
ELECTRICAL WIRING
Power Wiring Specifications and Best Practices
Power Supply / Power Wiring Specifications
•Single Zone systems operate at 1Ø, 208-230V, 60Hz, with the exception of Mega 115V, which operates at 1Ø, 115V, 60Hz.
•Power supply, wire type and size should be selected based on National Electrical Code and local codes. Maximum allowable voltage
fluctuation ±10% or nameplate rated value. Refer to Figure 57 for wiring guidelines.
•Properly ground the Single Zone outdoor unit and indoor unit per National Electrical Code and local codes.
•Use only copper wiring that is stranded and shielded with the wires separately insulated to avoid contact.
•Ground wire should be longer than the common power/communication wires.
•Refer to the inside of the Chassis Cover for Circuit and Terminal Block Diagrams for your model unit.
•Always match color codes of each wire and follow wiring diagram.
Connecting the Power Wiring Guidelines
Best practice dictates using ring or spade terminals to terminate power wiring
at the power terminal block (Figure 58).
If ring terminals or spade clips are not available, then:
”
AWG_“A”
3/4
/YL
GN
1/4”
Do not terminate different gauge wires to the power terminal block. Slack in
the wiring may generate heat and fire.
Power Wiring
and Ground
to Outdoor Unit
1/4
”
”
Power Wiring, Ground,
and Communication
Cable from Outdoor
Unit to Indoor Unit
AWG_“B”
3/4
/YL
GN
1/4”
1/4”
1/4
”
GN/YL = (Ground, Yellow)
Figure 57: Single Zone Outdoor and Indoor Wiring
and Communications Cable Diagram
Figure 58: Close up of a Typical Ring Terminal
Ring Terminal
Power Wiring
Figure 59: Proper and Improper Power Wiring Connections
:Copper Wire
Terminate multiple power wires of
the same gauge to both sides.
Do not terminate two wires on
one side.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Do not terminate different gauge
wires to a terminal block.
45
Electrical Wiring
WARNING
•When terminating wires of the same thickness, follow the instructions demonstrated in the illustrations below at Figure 59.
•Firmly attach the wire; secure in a way to prevent external forces from being
imparted on the terminal block.
•Use an appropriately sized screwdriver for tightening the terminals.
•
Do not over tighten the connections; over-tightening may damage the
terminals.
Line Voltage
(208/230V)
ELECTRICAL WIRING
Power Wiring Specifications and Best Practices
Power Supply / Power Wiring Specifications - Continued
WARNING
Single Zone Art Cool Premier Wall Mounted Installation Manual
•If power wires are not properly terminated and firmly attached, there is risk of fire, electric shock, and physical injury or death.
• Never ground the shield of the communications cable to the indoor unit frame or other grounded entities of the building. There is risk
of fire, electric shock, and physical injury or death.
• Never apply line voltage power to the communications cable terminal block. If contact is made, the PCBs may be damaged.
•Always include some allowance in the wiring length when terminating. Provide some slack to facilitate removing the electrical panels
while servicing.
General Communication Cable Specifications
•Use a four (4 )conductor, stranded, shielded or unshielded cable
between the Single Zone outdoor unit and the indoor unit. If shielded, it must be grounded at Outdoor unit chassis only. Must comply
with applicable national code.
•Minimum 18 gauge shielded CVVS or CPEVS cable.
•Insulation material as required by local code.
•Rated for continuous exposure of temperatures up to 140 °F.
•Maximum allowable cable length: 984 feet.
•Firmly attach the cable; provide slack but secure in a way to prevent external forces from being imparted on the terminal block.
•Wiring should be completed without splices.
•Terminate the cable shield to a grounded surface at the outdoor
unit only.
•Always verify the communication cable is connected to a communications terminal on the Single Zone unit.
• Never apply line voltage power to the communication cable connection. If contact is made, the PCBs may be damaged.
•The shield of the communications cable connecting the outdoor unit to the indoor unit should be grounded only to the outdoor unit frame.
•Tie the shield of each cable segment together using a wire nut at each indoor unit. Maintain polarity throughout the communication network.
•Position the outdoor unit communications cables away from the power wiring.
•Never use a common multiple-core communications cable. Each communications bus shall be provided a separate cable (i.e., between outdoor unit and indoor unit).
46
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
ELECTRICAL WIRING
Controllers
Controllers
Refer to Table 18 as to which wireless controller models to use for each Single Zone model. Once all wiring is connected to the indoor and
outdoor units, be sure to test the accompanying wireless controllers for performance. As always, follow all safety warnings and notes when
operating the Single Zone units using the wireless controller.
Table 18: Single Zone Model and Associated Wireless Controller Model
Single Zone Model Type
LA090HYV1, LA120HYV1
LA180HYV1, LA240HYV1
Wireless Controller Model
AKB73835320
AKB74835304
Electrical Wiring
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
47
ELECTRICAL WIRING
Indoor Unit Electrical Connections
Overview - Connecting Indoor Unit Electrical Wiring
The general guidelines for connecting electrical and communication cables to the indoor unit are the same for each of the Single Zone Wall
Mounted indoor units. However, the actual connections on the terminal block will differ.
Figure 60: Latch over Screws on Bottom Panel, Indoor Unit
Single Zone Art Cool Premier Wall Mounted Installation Manual
WARNING
•Be sure that main power to the unit is completely off before proceeding
with these steps. Failure to do so may cause shock or bodily injury.
•Follow all safety and warning information outlined at the beginning
and throughout this manual. Failure to do so may cause bodily injury.
•Follow all safety and warning information outlined at the beginning
and throughout this manual. Failure to do so may cause unit failure.
•Some units might require you to remove the Control Cover from the
terminal block area. Most Control Covers are attached with a phillips
screw head.
•Connect the electrical cable to the indoor unit by connecting the
wires to the terminals on the control board individually according to
the outdoor unit connection. Be sure that the color of the wires at the
outdoor unit along with the terminal numbers are the same as those
for the indoor unit.
Procedure
WARNING
Be sure there is no power going through the Single Zone system before
proceeding with these connections as there can be a risk of electrical
shock and bodily injury.
1. At the bottom panel of the indoor unit, unsnap the latches which
cover the phillips screw heads as shown in Figure 60.
•Normally, there are three (3) screws on the panel, however your
indoor unit model may differ.
2. Using a phillips head screwdriver, remove the screws from the
bottom panel of the indoor unit and set aside (Figure 61).
3. Remove the bottom panel (Figure 62).
•Removal is necessary to gain access to the terminal block which is
situated at the bottom of most indoor units.
•Note that the electrical/communications wiring is usually routed
through the back/bottom of the indoor unit (through a knockout
panel) as shown on the next page (Figure 63).
4. Using a screwdriver, connect the wires as shown on the next
page (Figure 64).
•Each wire should be securely attached to the terminal block.
•Pay attention to the location/connection of the green/yellow ground
cable.
48
Figure 61: Remove Screws from Bottom Panel
Figure 62: Remove (and Reattachment) Bottom Panel
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
ELECTRICAL WIRING
Indoor Unit Electrical Connections
Overview - Connecting Indoor Unit Electrical Wiring - Continued
5. When done, reattach the bottom panel to the indoor unit, being
careful to align panel using the rear tabs.
•You might need to give the panel a gentle tap with the palm of your
hand to be sure it engages at the bottom.
6. Using a phillips screwdriver, reattach the screws to the bottom
panel and secure.
7. Once screws are in place, re-snap the latches over the screws.
•Refer back to Figure 60 as an example.
8. If all other piping and electrical wiring to the outside unit has been
completed at this stage, you can turn the system on to test.
•
If you have not completed the piping connections, do not turn
power on at this time. Proceed to complete all other piping (along
with drain hose) and wiring to the system.
Figure 63: Indoor Unit Knockout (Communication Wires)
See Figure 64 and Figure 65 for typical indoor unit terminal
wiring.
Electrical Wiring
Indoor Terminal Block Connections
Figure 64: Typical Indoor Unit Terminal Block with Grounding Cable
Figure 65: Typical Indoor Unit Wiring Diagram
Terminal block
Connecting cable
Cable retainer
Cover
1(L1) 2(L2) 3
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
49
ELECTRICAL WIRING
Outdoor Unit Electrical Connections
Connecting Outdoor Unit Electrical Wiring
Single Zone Art Cool Premier Wall Mounted Installation Manual
The general guidelines for connecting electrical and communication cables to the outdoor unit are the same for each of the Single Zone Wall
Mount units. However, the actual connections on the terminal block will differ. See each illustration for the Single Zone unit model that you
are installing for correct wiring of each terminal block.
WARNING
•Be sure that main power to the unit is off before proceeding with
these steps. Follow all safety and warning information outlined at the
beginning of this manual. Failure to do so, may cause bodily injury.
•Be sure that a circuit breaker or some other emergency power cutoff
device is in place before any power wiring is done to the system.
Failure to do so, may cause bodily injury or death.
Never touch any power lines or live cables before all power is
•
removed from the system. To do so may cause bodily injury or death.
Procedure
Refer to Figure 66 below for an example of how a circuit breaker
should be wired through to the Single Zone system.
Figure 66: Circuit Breaker
Main Power Source
Air
Conditioner
Circuit Breaker
Use a circuit breaker
or time delay fuse
WARNING
1. Using a phillips head screwdriver, remove the conduit panel cover
from the outside unit. Refer to Figure 67 or Figure 68.
2. Before proceeding, inspect all wiring inside the casing to be sure
they are secure and have not come loose during transportation
and installation of the outdoor unit.
•Loose wires can cause the wiring to burn out quickly.
•Inspect wires for any damage or cracks (manufacturing defects).
3. Confirm that electrical power supply capacity is sufficient to run
the unit. See specifications sheets at the beginning of this installation manual for details on power.
4. Confirm the wiring is the right gauge size to meet local code.
5. Using a screwdriver, connect the wires as shown in Figure 69 for
9k/12k units or Figure 70 for 18k/24k units.
•Each wire should be securely attached to the terminal block.
•Bundle the cabling by using a cable restrainer.
•Pay attention to the location/connection of the green/yellow
grounding cable. In some models the connection may be located to
the side of the terminal block.
•Maintain a minimum of .2” of wire length from terminal block to
cable bundle.
•Be sure there is no power going through the Single Zone system before connecting wiring as it may result in electric shock, physical injury,
or death.
•Familiarize yourself with the location of the circuit breaker and be
sure that all power is removed from the Single Zone unit as it may
result in electric shock, physical injury, or death.
Figure 67: 9k/12k ODU Cover Removal
Figure 68: 18k/24k ODU Cover Removal
Terminal Block
Terminal Block
Cover
Terminal
Block Cover
Tubing
Cover
Bracket for
Main Power Cables
50
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
ELECTRICAL WIRING
Figure 69: 9k/12k ODU to IDU Wiring
Figure 70: 18k/24k ODU to IDU Wiring
LA090HYV1/LA120HYV1
LA180HYV1/ LA240HYV1
OUTDOOR UNIT
OUTDOOR UNIT
Disconnect Switch
POWER SUPPLY
Single Phase
208/230 VAC
POWER SUPPLY
Single Phase
208/230 VAC
Disconnect Switch
TERMINAL
8P
TERMINAL
5P
INDOOR UNIT
INDOOR UNIT
Electrical Wiring
TERMINAL
3P
TERMINAL
3P
Note
• Install a field supplied disconnect switch. Refer to local code.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
51
TROUBLESHOOTING
Self Diagnosis Functions
LG Monitoring View (LGMV) Diagnostic Software
Single Zone Art Cool Premier Wall Mounted Installation Manual
LGMV software (PRCTSL1 and PRCTFE1) allows the service technician or commissioning agent to connect a computer USB port to the
Single Zone unit’s main printed circuit board (PCB) using an accessory cable without the need for a separate interface device. The monitoring screen for LGMV allows the user to view the following real time data on one screen (Figure 71):
•Actual inverter compressor speed
•Target inverter compressor speed
•Actual outdoor fan speed
•Target outdoor unit fan speed
•Actual superheat
•Target superheat
•Actual subcooler circuit superheat
•Target subcooler circuit superheat
•Main EEV position
•Subcooling EEV position
•Inverter compressor current transducer value
•Outdoor air temperature
•Actual high pressure/saturation temperature
•Actual low pressure/saturation temperature
•Suction temperature
•Inverter compressor discharge temperature
•Front outdoor coil pipe temperature
•Back outdoor coil pipe temperature
•Liquid line pipe temperature
•Subcooler inlet temperature
•Subcooler outlet temperature
•Average indoor unit (IDU) pipe temperature
•Inverter compressor operation indicator light
Figure 71: MV Real-time Data Screen
•Liquid injection
valves’ operation
indicator lights
•Hot gas bypass valve
operation indicator
light
•Four-way reversing
valve operation
indicator light
•Pressure graph
showing actual low
pressure and high
pressure levels
•Error code display
•Operating mode
•Communication indicators
indicator
•IDU capacity
•Target high pressure
•IDU operating mode
•Target low pressure
•IDU fan speed
•PCB (printed circuit board) version
•IDU EEV position
•Software version
•IDU room temperature
•Installer name
•IDU inlet pipe temperature
•Model number of IDUs
•IDU outlet pipe temperature
•Site name
•IDU error code
•Total number of connected IDUs
Additional screens can be accessed by tabs on the main screen.
Additional screens include the following:
1. Cycleview (Figure 72): Graphic of internal components including:
•Compressors showing actual speeds
•EEVs
•IDUs
•Temperature and pressure sensors
•Four-way reversing valve
Figure 72: MV Cycleview
2. Graph: Full screen graph of actual high and low pressures and high
and low pressure limits. A sliding bar enables user to go back in
time and view data.
3. Control FTN: Enables user to turn on IDUs in 1.8 °F increments.
4. Useful Tab
•Unit Conversion: Converts metric values to imperial values.
Images on these pages are examples of LGMV screenshots. Actual images may differ depending on the version of the software and the unit
installed.
52
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
TROUBLESHOOTING
Self Diagnosis Functions
LG Monitoring View (LGMV) Diagnostic
Software and Cable - Continued
Figure 73: MV Control Indoor Units Screen
5. Data (Figure 73)
•Data Saving Start: Recording of real time data to a separate file created to be
stored on the user’s computer.
•Data Loading Start: Recorded data from a saved “.CSV” file can be loaded to
create an LGMV session.
6. Monitoring
•Electrical: The lower half of main screen is changed to show Inverter
Compressor Amps, Volts, Power Hz, Inverter control board fan Hz.
Troubleshooting
Error Codes
Figure 74: Error Code Screen
LGMV software helps the service technician or commissioning agent
to troubleshoot system operation issues by displaying malfunction
codes (Figure 74). These error codes can be seen on the main
screen of the LGMV software program. For an overview of Single
Zone unit error codes, see Error Codes section. For detailed information on how to troubleshoot individual error codes, see the Single
Zone Wall Mount Service Manual.
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 Pressure and Target Low Pressure values shown on main screen.
In lieu of connecting to the Water Source Unit (WSU), 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
•Main Memory: 1G
•Operating System: Windows® XP/Vista/7 32 bit (recommended),
64 bit
•Hard Disk: 600 MB when operating
•MS Office 2003, 2007 (recommended) for select reporting
functions
Images on these pages are examples of LGMV screenshots. Actual
images may differ depending on the version of the software and the
units installed.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
53
TROUBLESHOOTING
Single Zone Art Cool Premier Wall Mounted Installation Manual
LG SIMS - Self Diagnosis Functions
The SIMs WLAN module and the smart phone app together provide monitoring and troubleshooting capability for
LG Duct Free Systems. SIMs functions only with LG Duct Free products (Figure 75).
SIMs can display and graph operational data for the air conditioner system including the indoor unit and
the outdoor unit. SIMs also displays error codes and a troubleshooting guide. A full copy of the LG SIMs
Smart Inverter Monitoring System User’s Manual is available on the www.lghvac.com website.
To use SIMs you must be a trained HVAC service technician familiar with variable refrigerant flow
(VRF) systems in general and with LG’s Duct Free System products. You should understand the
inverter air conditioning operation cycle, the meaning of the data displayed by SIMs, and how to use the
data to troubleshoot the system.
Figure 76 shows a Multi F configuration used with the SIMs module and app. LG SIMs can also be used
with Single Zone one-to-one configurations such as the Single Zone Wall Mount systems.
Figure 75: LG SIMs App and WLAN Module
LG SIMs App
on Smart Phone
LG SIMs
WLAN Module
Figure 76: SIMs WLAN Module to Typical DFS System
WARNING
High voltages capable of causing death are used in this equipment. Outdoor unit power remains connected during this procedure. Take extreme
caution not to touch electrical components or connections. Failure to
observe this warning can result in death or severe injury.
•The Duct Free System air conditioning system
must run for at least 15–20 minutes before data
collected by SIMs 2.0 is valid for troubleshooting.
•You must have the free SIMs app correctly installed on your smart phone before using SIMs.
•Some ODUs have an LGMV extension cable accessed by removing the side handle cover. If the
ODU does not have this extension cable, access
the LGMV connector by removing the top cover
of the ODU.
Figure 77: SIMs App Main Info Screen
Operational
Information
SIMs App Main Info Screen
The main screen is the first screen displayed after wireless connection is
established. Tap the Main Info tab to display current readings regarding
your indoor and outdoor unit(s). The Operational Info area of the screen
will show active functions or modes by illuminating the light to the right of
the function (Figure 77).
Additional Help information can be accessed by tapping the Help Menu
buttons at the bottom of this screen.
AC Cycle
Information on
Main Info Tab
Help Menu
(File is Factory Use Only)
54
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
TROUBLESHOOTING
LG SIMS - Self Diagnosis Functions
SIMs App Screens
Outdoor Info/
Component Screen
Displays the following
information:
•Frequency
•FAN1 RPM
•FAN2 RPM
•DC Link
•Current
•Voltage
•EEV Mode
•Restart Timer
•Comp Mode
•EEV
Displays the following
information:
•Frequency
•Operation
•THM Mode
•REM Mode
•FAN
•EEV
•Air Temp
•Pipe-in
•Pipe-mid
•Pipe-out
Displays the following
information:
•Inv TD
•Suction
•Discharge
•Cond Mid
•Cond Out
•Heatsink
•Air Temp
Troubleshooting
Indoor Info Tab
Outdoor Info/
Temperature Screen
Graph Info Tab
This tab has three sub
sections:
•IDU - Indoor Unit
Temperature graph.
Displays IDU information in graph format. Information displayed is
for the IDU # selected
on the Main screen.
•ODU - Outdoor Unit
Temperature and Frequency graph. Displays
ODU information in
graph format.
•ODU Electric - Outdoor Unit Electric data
graph is displayed.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
55
TROUBLESHOOTING
Error Codes
Single Zone Art Cool Premier Wall Mounted Installation Manual
Troubleshooting Using Error Codes
Refer to Table 19 and Table 20 for error codes that are generated from the indoor and outdoor units. These codes are the most
common that will manifest through these units. Your particular model
duct free system might generate additional codes not listed here.
Please contact LG Support if you see these types of errors and a
simple power down and boot up has not corrected the issue. You
should not attempt to fix the system yourself.
Error Codes
•Error codes for indoor units will be displayed on the wall controller.
•Error codes indicate different types of unit failures, assists in
self-diagnosis and to track the frequency of occurrence.
•Error codes are shown on the wired remote controller, the Single
Zone unit control board, and LG Monitoring View (LGMV) Diagnostic
Software.
•If two or more errors occur simultaneously, the lower error code
number is displayed first.
•After error is resolved, the error code does not display.
Decoding the Error Display (for Outdoor Units)
The first and second number on the LED indicates error number.
Example: 21 = LED1 (Green light) 2x blink, LED2 (Red light) 1x blink
Error Code Nomenclature Definitions
•MICOM: Non-volatile memory chip where unit setup information is
stored.
•EPROM: Non-volatile memory chip where device identification,
size, and factory defined default component operating parameters
are stored.
Table 19: Single Zone Wall Mounted Indoor Unit Error Codes
Error
Code
1
2
4
5
6
9
10
12
21
22
23
25
26
27
28
29
31
32
40
41
44
45
46
48
56
Description
Indoor unit room temperature sensor error
Indoor unit inlet pipe sensor error
Float switch error (optional)
Communication error between indoor unit and outdoor units
Indoor unit outlet pipe sensor error
Indoor unit EEPROM error
Indoor unit BLDC motor fan lock
Indoor unit middle pipe sensor error
DC Peak (IPM Fault); Compressor DC voltage was too high
Current Transformer2 (CT2) error; Alternating current (AC) input too high
DC Link Low Volt
AC Low/High Volt
DC Comp Position Error (not providing rotation), Locking
PSC Fault; Current to inverter compressor between AC and DC converter circuit too high
Inverter compressor DC voltage is too high
Inverter compressor amperage is too high
Current-to-current transformer (CT) thermistor is too low
Inverter Compressor Discharge Pipe (D-Pipe) Overheat
CT Sensor Error; Thermistor is disconnected or shorted out
D-Pipe Sensor INV is disconnected or shorted out
Outdoor Air Sensor is disconnected or shorted out
Middle thermistor of outdoor unit condenser coil is disconnected or shorted out
Outdoor unit suction line thermistor is disconnected or shorted out
Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
TROUBLESHOOTING
Error Codes
Troubleshooting Using Error Codes - Continued
Table 32: Single Zone Wall Mounted Indoor Unit Error Codes - Continued
Error
Code
53
60
61
62
63
65
67
Description
Communication failure from outdoor unit to indoor unit
Outdoor unit printed circuit board (PCB) EEPROM check sum error
Outdoor unit condenser coil temperature is too high
Outdoor unit inverter compressor PCB heat sink temperature is too high
Condenser coil pipe thermistor temperature is too low
Heat sink thermistor has disconnected or has shorted out
Outdoor brushless direct current (BLDC) fan motor lock error
Single Zone Wall Mounted Outdoor Unit Error Codes
The Single Zone Wall Mounted outdoor unit error codes below are visible on the outdoor unit. When troubleshooting the system, be sure to
verify if the error codes that are being displayed are specific for indoor or outdoor units.
Troubleshooting
Table 20: Single Zone Wall Mounted Outdoor Unit Error Codes
Error
Code
21
22
23
25
26
27
28
29
31
32
40
41
44
45
46
48
53
60
Description
DC Peak (IPM Fault); Compressor DC voltage was too high
Current Transformer2 (CT2) error; Alternating current (AC) input too high
DC Link Low Volt
AC Low/High Volt
DC Comp Position Error (not providing rotation), Locking
PSC Fault; Current to inverter compressor between AC and DC converter circuit
too high
Inverter compressor DC voltage is too high
Inverter compressor amperage is too high
Current-to-current transformer (CT) thermistor is too low
Inverter Compressor Discharge Pipe (D-Pipe) Overheat
CT Sensor Error; Thermistor is disconnected or is shorted out
D-Pipe Sensor INV is disconnected or shorted out
Outdoor Air Sensor is disconnected or shorted out
Middle thermistor of outdoor unit condenser coil is disconnected or shorted out
Outdoor unit suction line thermistor is disconnected or shorted out
Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out
Communication failure from outdoor unit to indoor unit
Outdoor unit printed circuit board (PCB) EEPROM check sum error
No. of Times Outdoor Unit
LEDs Blink
LED1
LED2
(Plasma LED) (Power LED)
2X
2X
2X
2X
2X
2X
1X
2X
3X
5X
6X
7X
2X
2X
3X
3X
4X
4X
4X
4X
4X
4X
5X
6X
8X
9X
1X
2X
1X
4X
5X
6X
8X
3X
-
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
57
TROUBLESHOOTING
Error Codes
Table 33: Single Zone Wall Mounted Outdoor Unit Error Codes - Continued
Error
Code
Single Zone Art Cool Premier Wall Mounted Installation Manual
61
62
63
65
67
Description
Outdoor unit condenser coil temperature is too high
Outdoor unit inverter compressor PCB heat sink temperature is too high
Condenser coil pipe thermistor temperature is too low
Heat sink thermistor has disconnected or has shorted out
Outdoor brushless direct current (BLDC) fan motor lock error
No. of Times Outdoor Unit
LEDs Blink
LED1
LED2
(Plasma LED) (Power LED)
6X
6X
6X
6X
6X
1X
2X
3X
5X
7X
Refer to Service Manuals posted on www.lghvac.com for a full description of all error codes and workarounds.
58
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
CAUTIONS FOR REFRIGERANT LEAKS
Refrigerant Leaks
Cautions for Refrigerant Leaks/Introduction
ASHRAE Standards 15-2010 and 34-2010 offer guidelines that address refrigerant safety and the maximum allowable concentration of refrigerant in an occupied space. Refrigerant will dissipate into the atmosphere, but a certain volume of air is required for this to occur safely. For
R410A refrigerant, the maximum allowable concentration is 0.026 lbs./ft3 per 1,000 ft3 of air in an occupied space. Buildings with twenty-four
(24) hour occupancy allow half of that concentration.1
ASHRAE Standards 15 and 34 assume that if a system develops a leak, its entire refrigerant charge will dump into the area where the leak
occurs. To meet ASHRAE Standards 15 and 34, calculate the refrigerant concentration that may occur in the smallest room volume on
the system, and compare the results to the maximum allowable concentration number (see following pages for information on how to calculate the refrigerant concentration).1 Also consult state and local codes in regards to refrigerant safety.
Refrigerant Concentration Limit (RCL) Calculations
To calculate total refrigerant amount per system:
Amount of
Amount of
Factory-Charged + Additional
Refrigerant per
Refrigerant
Outdoor Unit
Trim Charge
RCL (lbs./ft3) =
Total System
= Refrigerant
Charge
Total System Refrigerant Charge (lbs.)
Volume of Smallest Occupied Space (ft3)
WARNING
Verify the maximum refrigerant concentration level in the space where
the indoor unit will be mounted meets the concentration limit for the
application. Failure to do so can cause health hazards and bodily injury
to occupants of the space.
To calculate the potential refrigerant concentration level (RCL):
1. Measure the occupied space dimensions (in feet).
2. Calculate the cubic foot volume of air in the smallest occupied
space. (To obtain a detailed overview of the RCL, perform the
same calculations to the second smallest zone, the third smallest
zone until the RCL is obtained for all zones. Also, pay special
attention to areas such as basements, etc., where refrigerant
cannot dissipate easily.)
3. Divide the refrigerant charge of the Single Zone system serving
the area in pounds by the results of step 1.
4. If the calculation indicates that the potential refrigerant concentration level is higher than the allowed RCL, increase the cubic
volume of the smallest occupied space or modify the piping
system design.
5. The allowable RCL limit for most applications must be equal to
or less than 0.026 lbs./ft3. However, in special occupied spaces,
such as hospitals and nursing homes, where occupants may have
limited mobility, the allowable RCL limit is cut in half. See ASHRAE
Standard 34-2007 and local codes for detailed information.1
American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE). Atlanta, GA. ASHRAE, Inc. Information about
ASHRAE Standard 15-2010 / 34-2010 and addenda current as of the
date of this publication.
1
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
59
Cautions for Refrigerant Leaks
Take appropriate actions at the end of HVAC equipment life to recover,
recycle, reclaim or destroy R410A refrigerant according to applicable US
EPA rules.
INSTALLATION CHECKLIST
Major Component Rough-In
PAGE 1
Description
Single Zone unit was connected properly per local code and the product installation procedures.
All literature and bagged accessories have been removed from the fan discharge.
Indoor unit was installed, properly supported, and located indoors in a non-corrosive environment.
Single Zone unit’s gravity condensate drain line was connected and routed where it properly drains away or, if installed in a mechanical room, was connected and properly routed to a drain terminal.
Check
Single Zone Art Cool Premier Wall Mounted Installation Manual
Piping and Insulation
Description
Copper
Over 5/8 inches—Rigid ACR only.
5/8 inches and under—Can use soft ACR.
15% silver brazing material only.
All refrigerant pipes and valves were insulated separately. Insulation butts up against the walls of the indoor units. No gaps or
cracks. Insulation was not compressed at clamps and hangers.
Check
Brazing Practices
Description
Medical grade (there are 4 available) dry nitrogen for purging during brazing was used (constant 3 psi while brazing).
Check
Installation
(For more information on any procedure, refer to the detail provided in the Indoor Unit Installation Manuals.)
Refrigerant Piping
Description
All pipe materials were properly stored, capped, and clean. All burrs were removed after cutting and pipe ends were reamed
before brazing.
During refrigerant pipe installation, for each segment of pipe, a record was made of the pipe length (including expansion loops,
offsets, double-back sections), and sizes, as well as the quantity and type of elbows used.
All long runs of straight pipe were provided with expansion loops.
A torque wrench and backup wrench were used to tighten all flare connections.
The back side of all flares were lubricated with a small drop of PVE refrigeration oil before tightening flare fittings.
Ensure all field made flares are 45°. Use factory-supplied flare nuts only.
Pipe segments were properly supported and all wall penetrations were sleeved.
Pipe insulation was not compressed at any point.
No oil traps, solenoid valves, sight glasses, filter driers, or any other unauthorized refrigerant specialties were present.
Best practice including a minimum of 20″ of straight pipe was installed between each elbow.
60
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
Check
INSTALLATION CHECKLIST
PAGE 2
Condensate Pump / Drain Installation
Power Wire and Communications Cables
Description
Power wiring was connected to a single phase 208-230V source.
Ground wire was installed and properly terminated at the unit.
The power supplied was clean with voltage fluctuations within specifications. (±10% of nameplate).
Power wiring to the Single Zone outdoor unit was installed per all local electrical code requirements.
Power wiring to the indoor unit was installed per all local electrical code requirements.
LG-supplied cable was used between the indoor unit and its zone controller. No cables were spliced and no wire caps are
present.
Communication type RS-485–BUS type.
All communications cables were a minimum of 18-AWG, four (4) conductor, shielded, and stranded, with insulation material per
local code. Cable segment shields were tied together.
Used appropriate crimping tool to attach ring or spade terminals at all power wiring and control cable terminations.
All power and control wires were properly separated using the recommended distance provided in the product installation manual.
Check
Checklists
For further technical materials such as submittals, engineering
manuals, service manuals, and catalogs, visit www.lghvac.com.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
61
20001747
ISO 9001: 2008
LG ELECTRONICS INC.
LG Electronics U.S.A., Inc.
Commercial Air Conditioning Division
11405 Old Roswell Road
Alpharetta, Georgia 30009
www.lghvac.com
LG Customer Information Center, Commercial Products
1-888-865-3026 USA
Follow the prompts for commercial A/C products.
IM_SZ_ArtCoolPremier_HYV1_4_16
Supersedes: IM_SZ_ArtCoolPremier_HYV1_6_15
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising