LG LG290N1CW-G4, LG280N1C-G4, LG290N1C-G4, LG295N1C-G4, LG295N1CW-G4 Installation Instructions Manual

Monocrystalline Solar Module

LGXXXN9C(W)-G4

LGXXXN1C(W,K)-G4

Installation Instructions

MFL69021104

Table of Contents

Revisions Table

2

1. Safety 3

2. Before & After Installation 4

3. Electrical Installation 5

4. Mechanical Installation 6

5. Product Specifications 10

6. Disclaimer of Liability / Disposal 12

7. Transporting and Storage 12

Date Version RemarkDescription of change

1.0 (1stedition)2015.01.22

3

Safety

The instructions related to the safety indicated in the
following are for preventing unexpected danger or
damage in advance by safely and exactly using the
product.

Non-compliance of the instructions may immediately
cause serious injury or death.

Non-compliance of the instructions may cause death
or serious injury to the user.

Non-compliance of the instructions may cause injury
or property damage to the user.

Do not contact with electrically active parts of the
panel, such as terminals, regardless of
connection of the module. It may result in spark
or lethal electric shock.

Please don’t use the module with the broken
window or the torn back side. There is a danger
of electric shock.

Please perform works in the dry condition and
use only dry tools. Do not handle the wet panels
without protection equipment. It may result in
safety accident.

Damaged module must be treated with safety
protection equipment. It may result in injury.

Do not approach the damaged or broken module
unless you are an expert. It may result in serious
injury.

No electrical parts like cables are located after
installation between laminate and mounting
structure.

Do not reconnect or repair Junction Box Cable. It
may occur spark or electric shock.

Module Module

Installing structure
(bent type)

Installing structure
(Stralght type)

Product Deformation Occurrence of space

Please use proper equipment, connector, wire
and buttress for system configuration of the
module. It may result in damage or failure of the
product.

Do not perform installation in rainy, heavily windy
or snowy days. It may result in safety accident.
Do not make holes in the frame or glass of the
module. It 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.
Do not locate a heavy object onto the module. Do
not stand on or step on the module. Do not drop
or suddenly lay down the module. It may result in
injury.
Do not scratch the coating surface of the frame. It
may decrease the strength due to corrosion of
the frame.
Do not concentrate sunlight on the module
surface. It may result in damage of the product.
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. It may result in
damage of the product.
If the installing structure has a curved surface
e.g. arch type as shown in the below picture, do
not forcefully modify the module in installation
when connecting it with the structure. Please
install the module in the place where the
structure has been completely set up because
deformation of the structure may cause
deformation of the product when performing
installation by using a crane, etc after assembling
the module to the installing structure.

4

Before & After Installation

• Wear a safety belt if working high above the
ground.

• Contact with electrically active parts of the panels,
such as terminals, can result in burns, sparks and
lethal shock whether the panel is connected or
disconnected.

• Even partial shadowing can 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.

• Dirt build-up on the surface of the panel can cause
active solar cells to be shaded and electrical
performance to be impaired.

• Always keep the back surface of the panel free
from any foreign objects or structural elements
which could come into contact with the panel,
especially when the panel is under mechanical
load.

• For permission to use mounting methods not
described in the Mounting Guide please consult
LG Solar. Failure to do so will void the warranty
and panel certification.

After Installation

• Plug the connector in tightly and ensure that the
wiring properly works.

• It is advisable to 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.

• PV panels can operate effectively without ever
being washed, although removal of dirt from the
front glass can increase output.

• 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.

• No aggressive and abrasive cleansers or
chemicals such as alkali chemicals including
ammonia based solution should ever be used on
the treated front glass.

• Always wear rubber gloves for electrical insulation
while maintaining, washing or cleaning panels.

• Deposits of foreign material on the frame surface
can be cleaned using a wet sponge or cloth and
dried in air or by using a clean chamois.

• Perform the wiring work by connecting the
connector and wires to the stand away from the
roof or ground.

Before Installation

Please carefully read this manual before installation.

• Solar module installation should be performed by
an authorized installer for the safety and
maintenance of the system.

• All installation instructions should be clearly
understood before attempting installation.

• Do not twist, pull, or scratch the cable attached to
the solar module.

• Do not touch the solar module with bare hands. It
may result in a burn or injury.

• Do not drop the solar module and cause an
excessive load on solar module.

• Do not disassemble the solar module.

• After installation or repair, check whether solar
module operates properly or not.

• In case the currently used solar module or the
parts applied to the solar module have been
replaced, check whether the changed solar module
is properly operated or not. The newly replaced
solar module and its parts must be the same solar
module(module name) and parts with the current
solar module.

• Please contact the local office to confirm the
regulations and to obtain permission.

• Do not let anyone approach the solar module who
has little knowledge of solar modules or on the
measures to take when solar modules are
damaged in order to avoid the risk of injury or
electrical shock.

• Do not locate the solar module horizontally, as this
may cause dirt or white efflorescence (glass
deformation)

• Panels produce voltage even when not connected
to an electrical circuit or load.

• Panels are intended for outdoors, land based
applications only. Panels are not intended for use
indoor use or application on moving vehicles of any
kind.

• Reflection from external environments such as
snow, water or other surfaces can increase the
power generated by the panel.

• Industry standard rated specifications are made at
conditions of 1000W/m2 irradiance and 25°C
(77ºF) solar cell temperature. Colder temperatures
can substantially increase voltage and power.

• Keep the solar module and system away from
children when installing.

• Keep the module packed in the carton until the
time of installation.

• Make sure flammable gases are not generated
near the installation site.

• Do not work alone. Please work as part of a team
of two or more people.

--

Parallel connection for more current

5

Electrical Installation

Parallel Connection

• The solar modules may be combined in parallel to
produce the desired current output.

• 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 same.

• When connecting plural strings of modules in
parallel every series string or solar module must be
fused prior to combining with other strings.
By pass diodes are factory installed in the solar
modules.

• Please refer to the applicable regional and local
codes for additional fusing requirements and
limitations on the maximum number of solar
modules in parallel.

• Maximum parallel strings without proper measures,
e.g. fuse 20A and/or blocking diode : 1 string
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 and/or blocking
diodes for prevention of unbalanced string voltage.

• 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. Accordingly, the values
of Isc and Voc 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.

• Depending on national directives additional safety
factors might be applicable for overcurrent
protection.

Caution

• Avoid all electrical hazards when installing, wiring,
operating and maintaining a panel.

• Do not use panels of different electrical 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.

• When reverse currents can exceed the value
marked on the name plate, a properly rated and
certified over-current device (fuse or circuit
breaker) must be connected in series with each
panel or string of panels.

• The rating of the over-current device shall not
exceed the maximum series fuse rating marked on
the name plate.

• The panel contains factory installed bypass diodes
located inside the junction box.

• When installing the system, it is recommended to
install the lightning rod to protect the system.

• The junction box should not be opened. Opening
the junction box may void the warranty.

• 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.

Electrical Connections

• Modules may be connected in series and/or
parallel to achieve the desired electrical output as
long as certain requirements are met.

• Please use only the same type of modules in a
combined source circuit.

• Do not disconnect the module under load.
Shock hazard can occur near the solar modules
connection means.

Series Connection

• The solar modules may be wired in series to
produce the desired voltage output.

• The current of each module connected in series
should be same.

• The maximum number of series connected
modules can be determined by basis on max.
system voltage, the 125% safety factor, and the
module Voc which can be checked in “Product
Specifications” in this document.

• Do not exceed 80% of maximum system voltage.

• The maximum solar module configuration can be
found in “Product Specifications”.

Series connection for more voltage