Monocrystalline Solar Module
LGXXXS1C(W, K)-G3
Installation Instructions
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Safety
The instructions related to safety and use indicated in
the this installation manual are intended for the
prevention of unexpected danger, damage, or failure.
Do not scratch the coating surface of the frame.
Scratches may decrease the total solar output
due to corrosion of the frame.
Do not artificially concentrate sunlight on the solar
module surface. Failure to comply may result in
product damage or failure.
Non-compliance with the instructions may cause
product damage, product failure, and/or serious
bodily injury or death.
Do not apply a shock to the junction box of the
module or pull the cable. Do not remove the
labels attached to the module. Failure to comply
may result in damage of the product.
If the installing modules on curved surface, (e. g.
arch type), as shown in the below picture, do not
forcefully modify the module in the installation
when connecting it with the structure. Only install
the module in the place where the structure for
the panels has been properly set up. An improper
structure may cause deformation of the panels.
Panels may also be damaged by unapproved
installation methods such as the use of a crane.
Do not contact electrically active parts of the
panel, such as terminals, without appropriate
safety gear. Contact may result in lethal spark or
electric shock.
Do not use or install if the module is broken or torn.
Failure to comply may result in electric shock.
Perform all work in dry conditions and use only dry
tools. Do not handle wet panels without appropriate
protection equipment. Failure to comply may result
in accident or death. accident or death.
Damaged modules must be treated with safety
protection equipment. Failure to comply may
result in serious bodily injury or death.
Do not approach the damaged or broken module
unless you are an authorized or qualified expert.
Failure to comply may result in serious bodily
injury or death.
Module
Module
Installing structure
(Stralght type)
Installing structure
(bent type)
Use proper equipment, connectors, wires and
buttresses for the installation of the module. Failure
to comply may result in product damage, product
failure or bodily injury.
Product Deformation
Occurrence of space
Installation during rain, heavy wind or snowy day
may result in bodily injury or death.
Holes in the frame or glass of the module may
decrease the strength of the frame or break the
glass.
Do not touch the glass surface or frame of the solar
module after installation of the module. It may result
in injury or death.
Heavy objects must be kept off of the solar module.
Do not stand on or step on the module. Do not drop
the module. Failure to comply may result in product
damage, product failure or bodily injury.
2
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Before & After Installation
• Dirt build-up on the surface of the panel may cause
active solar cells to be shaded and electrical
performance to be impaired.
Before Installation
Please carefully read this manual before installation.
• Contact with electrically active parts of the panels,
such as terminals, may result in burns, sparks and
lethal shock whether the panel is connected or
disconnected.
• Panels produce voltage even when not connected
to an electrical circuit or load.
• Always keep the back surface of the panel free
from any foreign objects or structural elements
which could come into contact with the panel.
• Solar module installation and maintenance must be
performed by qualified and authorized installer.
• All installation instructions should be read and
understood before performing any installation.
• Do not twist, pull, or scratch the cable attached to
the solar module.
• Do not touch the solar module with bare hands.
Failure to comply may result in a serious burn or
injury.
After Installation
• Plug in the connector tightly and ensure that the
wiring properly works.
• Conduct periodic inspection of the panels for
damage to front glass, back sheet, frame, junction
box, or external electrical connections.
• Check electrical connections for loose connections
and corrosion.
• Do not drop the solar module or place weight on a
solar module.
• Removal of dirt from the front glass can increase
output.
• Do not disassemble the solar module.
• After installation or repair, check that the solar
module are operating properly.
• In the event that the currently used solar module or
parts have been replaced the newly replaced
module and parts must have the same model
name and parts as the previously installed solar
module.
• Secure all necessary permits and licenses to install
the solar modules
• Water, ethanol or a conventional glass cleanser
with a micro-fiber cloth can be used for regular
washing or rinsing of the front glass to remove
dust, dirt or other deposits.
• Aggressive and abrasive cleansers or chemicals
such as alkali chemicals including ammonia based
solution should not be used on cleaning the module.
• Only qualified and authorized individuals are
permitted to treat electrical parts, when there is a
breakage, failure or damage of the product or
damage of the product.
• Do not use or install broken modules; Failure to
comply may result in fire, electric shock, and injury.
• Always wear rubber gloves for electrical insulation
while maintaining, washing or cleaning panels.
• Deposits of foreign material on the frame surface
can be cleaned by using a wet sponge or cloth and
dried in air or by using a clean chamois.
• Do not install the module horizontally. Failure to
comply may result in excess dirt or white
efflorescence (glass disease).
• Panels are not intended for use indoors or on
moving vehicles of any kind.
• Perform the wiring work by connecting the
connector and wires to the stand away from the
roof or ground.
• Reflection from external environments such as
snow Reflection from external environments such
as snow, water or other surfaces may increase the
power generated by the panel.
• Industry standard rated specifications are made at
conditions of 1000W/m 2 irradiance and 25 °C
(77ºF) solar cell temperature. Colder temperatures
may substantially increase voltage and power.
Electrical Installation
Danger
• Avoid all electrical hazards when installing, wiring,
operating and maintaining all panels.
• Keep the solar module and system away from
children at all times.
• Keep the module packed in the carton until the
time of installation.
• Keep flammable gasses away from the installation
site.
• Do not work alone. Please work as part of a team
of two or more people.
• Safety harness use is strongly recommended for
installation.
• Do not connect panels that have different electrical
properties or physical configurations in the same
system.
• Match the polarities of cables and terminals when
making the connections; failure to do so may result
in damage to the panel.
• The rating of the over-current device shall not
exceed the maximum series fuse rating marked on
the name plate.
• Partial shadowing may substantially reduce panel
and system output.
• Care must be taken to avoid low tilt angles which
may cause dirt to buildup on the glass against the
frame edge.
• The panel contains factory installed bypass diodes
located inside the junction box.
• When installing the system, it is recommended to
install a lightning rod to protect the system.
3
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Electrical Installation
• The junction box should not be opened. Opening
the junction box will void the warranty.
Parallel Connection
• The solar modules may be combined in parallel to
produce the desired current output.
• Panels with a suspected electrical problem should
be returned to LG Electronics for inspection and
possible repair or replacement as per the warranty
conditions provided by LG Electronics
• When modules are combined in parallel, the total
current is equal to the sum of currents from each
module.
• The voltage of each module connected in parallel
should be the same.
Electrical Connections
• Shock hazard may occur near the solar modules
electrical connections.
• When connecting plural strings of modules in
parallel every series string or solar module must be
fused prior to combining with other strings.
• Modules may be connected in series and/or
parallel to achieve the desired electrical output as
long as it is within the guidelines on the product
specification sheet.
• Abide with all applicable federal, state, and local
codes for additional fusing requirements and
limitations on the maximum number of solar
modules in parallel.
• Please use only the same type of modules in a
combined source circuit.
• Maximum parallel strings without proper measures,
e. g. fuse 15 A : 1 string
• Do not disconnect the module under when it is
operating.
Shock hazard may occur near the solar modules
connection means.
• Parallel configuration is not limited if proper
measures are taken to block the reverse current
flow, e.g. fuses for the protection of the module
and cables from over-current for prevention of
unbalanced string voltage.
Diodes
• A multiplying factor is required for increased output
of the PV modules. Under normal conditions, a PV
module is likely to experience conditions that
produce more current and/or voltage than reported
at standard test conditions. The requirements of
the National Electrical Code (NEC) in Article 690
shall be followed to address these increased
outputs. In installations not under the requirements
of the NEC, the values of Isc and Voc marked on
this PV module should be multiplied by a marked
on this PV module should be multiplied by a factor
of 125% when determining component voltage
ratings, conductor ampacities, fuse sizes, and size
of controls to the PV output.
• All LG modules are equipped with factory installed
bypass diodes. The factory-installed diodes provide
proper circuit protection for the systems within the
specified system voltage.
1
2
3
4
IF (AV)
VF (max)
VRRM
2X7.5A
0.84V
45V
D1
D2
D3
Tj (max)
RTH
175
1.7 /W
+
-
Series Connection
• Depending on national directives, additional safety
factors might be applicable for overcurrent
protection.
• The solar modules may be wired in series to
produce the desired voltage output.
• The current of each module connected in series
should be the same.
• The maximum number of series connected
modules can be determined by basis on max
system voltage, the 125% safety factor not
explained in specifications, and the module Voc
which can be checked in Product Specifications in
this document.
Do not exceed 80% of maximum system voltage.
Parallel connection for more current
• Maximum Module configuration (recommend) :
refer to the ‘Product Specification’ in this manual.
Series connection for more voltage
4
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Electrical Installation
General Wiring
Module frame
Bolt
• LG Electronics recommends that all wiring be double
insulated with a minimum rating of 90°C (194°F).
• All wiring should use a flexible copper (Cu) conductor.
• The minimum size should be determined by the
applicable codes.
Flat washer
Star washer
• LG Electronics recommends a size no smaller than
12AWG.
Cup washer
Grounding
wire
Earth Grounding
Flat washer
• All work must be conducted in conformance with all
Federal, State, and local codes and standards.
Spring washer
Nut
• Grounding works should be performed by an
authorized installer for the safety and maintenance of
the system in accordance with all national, state and
local electrical codes and regulations and standards.
• Specific information on the solar module
dimensions and location of grounding holes is
provided in “Product Specifications”.
• One M4 stainless steel bolt, one nut, one spring
washer two flat washers one cup washer one star
washer and 12 AWG Cu wires are recommended
per mounting hole.
Mechanical Installation
• Where common grounding hardware (nut, bolts,
washers) is used to attach a listed grounding
device, the attachment must be made in
conformance with the grounding device
manufacturer’s instructions.
Module Mounting
• The LG Electronics’ (LGE) Limited Warranty for
solar modules is contingent upon modules being
mounted in accordance with the requirements
described in this section.
• There is an earth hole on the edge of the module
frame Using this hole an earth conductor and the
solar module frame may be recommended to be
connected and earthed as the below drawing.
• Any module without a frame (laminate) shall not be
considered to comply with the requirements of UL
1703 unless the module with hardware that has
been tested and evaluated with the module under
this standard or by a field inspection certifying that
the installed module complies with the requirements
of UL 1703.
• All screws and nuts shall be tightened to a torque
of 4~5 Nm.
• A module with exposed conductive parts is
considered to be in compliance with UL 1703 only
when is electrically grounded in accordance with
the instructions presented below and the
requirements of the National Electrical Code.
Site Consideration
LGE solar modules should be mounted in a location
that meets the following requirements.
Operating Temperature
The installation instructions shall include:
1. Details for wiring shall comply the NEC Article
690.
• Maximum Operating Temperature: +90°C (194°F)
• Minimum Operating Temperature: -40°C (-40°F)
Design Strength
2. Details for the grounding method of the frame of
arrays shall comply with the NEC Article 250.
3. CNL model instruction manuals shall also include
a statement that installation shall be in
accordance with CSA C22.1, Safety Standard for
Electrical Installations, Canadian Electrical Code,
Part 1.
• LGE solar modules are certified to basic loads
50lb/ft2 (about 2400 Pa).
Excluded Operating Environments
• The solar modules from LG Electronics can not be
operated in a location where they could come in
direct or indirect contact with salt water or ammonia.
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Mechanical Installation
Mounting by using frame bolts holes
• Secure the solar module to the structure by using
the factory mounting holes.
• Four M6 stainless steel bolts, four nuts, four spring
washers, and eight flat washers are recommended
per solar module.
• The module may be fastened to a support by using
both the outer and inner bolt holes of the frame.
• Each module should be securely fastened at a
minimum 4 points on two opposite sides.
• Specific information on the solar module
dimensions and location of mounting holes is
provided in ‘Product Specifications’.
Mounting Methods
General Information
• Select the appropriate orientation to maximize
sunlight exposure.
• Module should not be mounted or stored in a way
that the front/top glass faces downward in order to
prevent water from entering the junction box, which
could cause a safety hazard.
• Clearance between the solar module frames and
structures such as roofs or ground is required to
prevent wiring damage and to allow air to circulate
behind the solar module. The recommended
standoff height is a minimum of 100mm
• When installed on a roof, the solar module must be
mounted over a fire-resistant roof covering rated
for the application. The fire resistance of the solar
module is class C after ANSI/UL790.
Module frame
Bolt
• The solar module is only IEC listed for use when its
factory frame is fully intact.
Flat washer
Flat washer
Spring washer
Nut
• Removal or alteration must be done by an
authorized and qualified individual
• Creating additional mounting holes may damage
the solar module and reduce the strength of the
frame.
• We recommend a 6mm gap between module
frames to avoid tension from thermal expansion.
Support
• The fire rating of this module is valid only when
mounted in the manner specified in the mechanical
mounting instructions.
• Tighten the bolt securely by using the combination
shown above. Place the spring washer between
the Flat washer and Nut.
• The module is considered to be in compliance with
UL1703 only when the module in mounted in the
manner specified by the mounting instructions
below.
Mounting by using clamps
• The module may be fastened to a support by using
clamps on both the long edge and the short edge
of the modules.
• The solar module may be mounted by using the
following methods: (*Torque:8~12Nm )
• When installing modules in heavy snow areas, it is
recommended to be taken an appropriate
countermeasure to prevent possible damages to
the lower side frame by slipping snow .
• Specific information on the solar module
dimensions and location of clamping is provided in
‘Product Specifications’.
(e.g. attach supporting part to the lowest modules)
Solar module
Supporting part
Roof
6
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Mechanical Installation
LGXXXS1C(W,K)-G3
Use four mounting holes on two opposite sides.
Clamping Range
(230mm)
Use four clamps on the long frame.
This method is not tested by IEC/UL.
Use four clamps on the Short frame.
Use four clamps on the short frame and
two clamps at the center of long Frame.
This installation is allowed in the following cases:
1. Slope roof: If module is installed parallel to the rooftop.
2. Flat roof: If installed with an additional stand such as wind
shield or deflector.
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Product Specifications
- Electrical and Mechanical Properties
(Rated electrical characteristics are within 10 percent)
Standard Test Condition(STC) : Irradiation 1,000W/m2, Cell temp. 25°C, 1.5AM
Certifi
Electrical Properties
Mechanical Properties
Other
cates
W
%
V
A
V
A
%
V
mm
mm
mm
35
kg
A
LG240S1C(W)-G3
LG245S1C(W)-G3
LG250S1C(W)-G3
LG255S1C(W)-G3
LG260S1C(W)-G3
LG265S1C(W)-G3
LG270S1C(W)-G3
LG240S1K-G3
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
240
3%
37.96
8.42
30.37
7.91
<4.5
600
12
12
12
12
12
12
12
12
12
12
12
12
MC4
MC4
MC4
MC4
MC4
MC4
MC4
MC4
MC4
MC4
MC4
MC4
1640
1000
16.8
15
245
250
255
260
265
270
240
245
250
255
260
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
3%
38.11
38.26
38.41
38.56
38.71
38.86
37.96
38.11
38.26
38.41
38.56
8.52
8.62
8.72
8.82
8.92
9.02
8.42
8.52
8.62
8.72
8.82
30.57
30.77
30.97
31.17
31.37
31.57
30.37
30.57
30.77
30.97
31.17
8.02
8.13
8.24
8.35
8.46
8.57
7.91
8.02
8.13
8.24
8.35
<4.5
<4.5
<4.5
<4.5
<4.5
<4.5
<4.5
<4.5
<4.5
<4.5
<4.5
600
600
600
600
600
600
600
600
600
600
600
1640
1640
1640
1640
1640
1640
1640
1640
1640
1640
1640
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
35
35
35
35
35
35
35
35
35
35
35
16.8
16.8
16.8
16.8
16.8
16.8
16.8
16.8
16.8
16.8
16.8
15
15
15
15
15
15
15
15
15
15
15
LG245S1K-G3
LG250S1K-G3
LG255S1K-G3
LG260S1K-G3
Note : *Relative efficiency reduction by respect to irradiance
*MC4 formal name : PV-KST4 / 6II-UR, PV-KBT4 / 6II-UR
- Dimensions of Modules
LGXXXS1C(W,K)-G3
Unit: mm / in.
Cross-sectional drawings
Long side frame
Short side frame
Note :*Holder is for the convenient connection of junction box cable,but that does not warranty if it is broken
after installed.
8
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Disclaimer of Liability / Disposal
Disclaimer of Liability
• By beginning the installation process the installer
represents the he/she has read and completely
understands this Installation Manual. He/She
further represents if he/she had any questions
regarding this installation manual he/she would
have contacted LG with any questions or concerns.
By installing an LG Solar module, I discharge, and
cove nant not to sue LG, its affiliated companies,
successors, or assigns, its administrators,
directors, agents, officers, volunteer and
employees, other participants in any activity
connected to installation, operation, or service of
LG Solar Modules and if applicable from all
liabilities claim Solar Modules, and if applicable,
from all liabilities, claims, demands, losses, or
damages on my account caused or alleged to be
caused in whole or in part by the negligence of the
LG its affiliated companies, successors, or assigns,
its administrators, directors, agents, officers,
volunteer and employees.
Disposal
• Please contact us, if you have any queries related
to the disposal or recycling of solar modules from
LG Electronics.
Transporting and Storage
• Do not loosen the banding, when the module is
transported by truck, ship and etc.
In case of loose banding, the module will be
shaken, which may cause damage.
• Do not stack more than three pallets.
Severe stacking can cause stress to the module
and may cause product damage.
9
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Appendix
WILEY Compatibility
• LG modules have been confirmed by Burndy LLC that the below model number designations have been
evaluated with the Burndy WEEB line of products :
LGxxxS1C-G3, LGxxxS1K-G3, LGxxxN1C-G3, LGxxxS1C-A3, LGxxxS1K-A3
- WEEBs
WEEB-DPF
- Grounding Lugs
LUG 6.7
- Cable Clips
ACC-R2
Important Notes
1. The NEC section 690.43 states, “Exposed non-current carrying metal parts of module frame, equipment and
conductor enclosures shall be grounded in accordance with 250.134 or 250.136(A) regardless of voltage”
2. Use general purpose anti-seize compound on fastener threads when installing WEEBs.
3. WEEBs are intended for SINGLE USE ONLY. Functionality will not be guaranteed if reused.
10
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LG Electronics U.S.A Inc.
1000 Sylvan Ave, Englewood Cliffs, NJ 07632
Contact : [email protected]
This document is subject to change without notice.
LG, LG logo and Life's Good are trademarks of LG Electronics, Inc. worldwide. Trademarks and
intellectual properties of LG Electronics, Inc. are protected by international copyright laws.
Document : II-G3-UL-V5-EN-201306
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