LG N1T-G4 Series User manual

INSTALLATION INSTRUCTIONS
Monocrystalline Solar Modules
LGxxxS1C(W,K)-L4
LGxxxN1C(W,K)-G4
LGxxxN1T-G4

3
EN
TABLE OF CONTENTS
Safety
Safety ................................................................................................................................................................................................................ 4
Before & After Installation ........................................................................................................................................................ 6
Before Installation
.......................................................................................................................................................................... 6
After Installation
............................................................................................................................................................................... 7
Electrical Installation ....................................................................................................................................................................... 8
Caution
...................................................................................................................................................................................................... 8
Electrical Connections
.............................................................................................................................................................. 8
Series Connection
......................................................................................................................................................................... 9
Parallel Connection
...................................................................................................................................................................... 9
General Wiring
................................................................................................................................................................................ 10
Earth Grounding
.............................................................................................................................................................................. 11
Mechanical Installation ............................................................................................................................................................... 12
Module Mounting
........................................................................................................................................................................ 12
Site Consideration
...................................................................................................................................................................... 12
Mounting Methods
..................................................................................................................................................................... 13
Disclaimer of Liability / Disposal .................................................................................................................................... 16
Disclaimer of Liability .............................................................................................................................................................. 16
Disposal
................................................................................................................................................................................................... 16
Transporting and Storage ......................................................................................................................................................... 17

4
SAFETY
The instructions related to the safety
indicated in the following are for preven-
ting unexpected danger or damage in
advance by safely and exactly using the
product.
DANGER
Non-compliance of the instructions may
immediately cause serious injury or
death.
WARNING
Non-compliance of the instructions may
cause death or serious injury to the user.
CAUTION
Non-compliance of the instructions may
cause injury or property damage to the
user.
DANGER
1. Do not contact with electrically active
parts of the module, such as terminals,
regardless of connection of the module.
It may result in spark or lethal electric
shock. (The electric shock hazard incre-
ases when circuits operate at open-cir-
cuit voltage and/or maximum system
voltage in excess of 45V.)
2. Please don’t use the module with the
broken window or the torn back side.
There is a danger of electric shock.
WARNING
1. Please perform works in the dry condi-
tion and use only dry tools. Do not
handle the wet modules without protec-
tion equipment. It may result in safety
accident.
2. Damaged module must be treated
with safety protection equipment. It may
result in injury.
3. Do not approach the damaged or
broken module unless you are an expert.
It may result in serious injury.
4. No electrical parts like cables are lo-
cated after installation between laminate
and mounting structure.
5. Do not reconnect or repair junction
box cable. It may occur spark or electric
shock.
SAFETY
1. 2.
1.
2.
1
.
3. 4.
5.

5
EN
SAFETY
9. 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 connec-
ting it with the structure. Please install
the module in the place where the struc-
ture has been completely set up be-
cause 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.
CAUTION
1. Please use proper equipment, con-
nector, wire and buttress for system con-
figuration of the module. It may result in
damage or failure of the product.
2. Do not perform installation in rainy,
heavily windy or snowy days. It may result
in safety accident.
3. Do not make holes in the frame or
glass of the module. It may decrease the
strength of the frame or break the glass.
4. Do not touch the glass surface or
frame of the solar module after installa-
tion of the module. It may result in injury.
5. 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.
6. Do not scratch the coating surface of
the frame. It may decrease the strength
due to corrosion of the frame.
7. Do not concentrate sunlight on the
module surface. It may result in damage
of the product.
8. 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.
Module
Installing structure
(Straight type)
Product
deformation Occurrence of space
1. 2.
3. 4. 5.
9.
8.
7.6.
Module
Installing
structure
(bent type)

6
BEFORE & AFTER INSTALLATION
Before Installation
Please carefully read this manual before
installation.
•
Solar module installation should be per-
formed by an authorized installer for the
safety and maintenance of the system.
•
All installation instructions should be
clearly understood before attempting ins-
tallation.
•
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 the solar module.
•
Do not disassemble the solar module.
•
After installation or repair, check whether
the 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 chan-
ged 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 mo-
dule who has little knowledge of solar mo-
dules or on the measures to take when
solar modules are damaged in order to
avoid the risk of injury or electrical shock.
•
Modules produce voltage even when not
connected to an electrical circuit or load.
•
Modules are intended for outdoors, land
based applications only. Modules are not
intended for 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
module.
•
Industry standard rated specifications are
made at conditions of 1000 W/m2irradi-
ance and 25°C solar cell temperature.
Colder temperatures can substantially in-
crease 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.
BEFORE & AFTER INSTALLATION

7
EN
BEFORE & AFTER INSTALLATION
After Installation
•
Plug the connector in tightly and ensure
that the wiring properly works.
•
It is advisable to conduct periodic inspec-
tion of the modules for damage to front
glass, back sheet, frame, junction box, or
external electrical connections.
•
Check electrical connections for loose
connections and corrosion.
•
Photovoltaic modules can operate effec-
tively 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 in-
sulation while maintaining, washing or
cleaning modules.
•
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 stand away from
the roof or ground.
•
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.
•
Wear a safety belt if working high above
the ground.
•
Contact with electrically active parts of the
modules, such as terminals, can result in
burns, sparks and lethal shock whether
the module is connected or disconnected.
•
Even partial shadowing can substantially
reduce module 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 mo-
dule can cause active solar cells to be
shaded and electrical performance to be
impaired.
•
Always keep the back surface of the mo-
dule free from any foreign objects or
structural elements which could come
into contact with the module, especially
when the module is under mechanical
load.
•
For permission to use mounting me-
thods not described in the Installation
Instructions please consult LG Electro-
nics. Failure to do so will void the war-
ranty and module certification.

8
•
Modules 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.
ELECTRICAL INSTALLATION
Caution
•
Avoid all electrical hazards when instal-
ling, wiring, operating and maintaining
a
module .
•
Do not use modules of different electri-
cal or physical configurations in the
same system.
•
Match the polarities of cables and ter-
minals when making the connections;
failure to do so may result in damage
to the
module .
•
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
module or string of modules .
•
The rating of the over-current device
shall not exceed the maximum series
fuse rating marked on the name plate.
•
The module contains factory installed
bypass diodes located inside the junc-
tion box.
•
When installing the system, it is
recommended to install the lightning
rod to protect the system.
•
The junction box should not be ope-
ned. Opening the junction box may
void the warranty.
ELECTRICAL INSTALLATION

9
EN
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 modu-
les in parallel every series string or solar
module must be fused prior to combining
with other strings.
•
Bypass diodes are factory installed in the
solar modules.
•
Please refer to the applicable regional and
local codes for additional fusing require-
ments and limitations on the maximum
number of solar modules in parallel.
•
Maximum parallel strings without proper
measures, e.g. fuse 20 A 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 pro-
tection of the module and cables from
over-current and/or blocking diodes for
prevention of unbalanced string voltage.
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.
•
Do not exceed 80% of maximum system
voltage.
•
The maximum number of series connec-
ted modules can be determined by basis
on max. system voltage, the 125 % safety
factor, and the module Voc which can be
checked in the related data sheet.
•
Maximum solar module configuration:
-
LGxxxS1y-L4, xxx = 280...300
maximum 20 solar modules in series
-
LGxxxN1y-G4, xxx = 280...300
maximum 20 solar modules in series
-
LGxxxN1y-G4, xxx = 305...320
maximum 19 solar modules in series
y = C, W, K, T, all at temperature 25 °C
Series connection for more voltage

10
•
A multiplying factor is required for increa-
sed output of the photovoltaic modules.
Under normal conditions, a photovoltaic
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 photovoltaic module
should be multiplied by a factor of 125 %
when determining component voltage
ratings, conductor ampacities, fuse sizes,
and size of controls to the photovoltaic
output.
•
Depending on national directives additio-
nal safety factors might be applicable for
over-current protection.
General Wiring
•
LG Electronics recommends that all
wiring be double insulated with a mini-
mum rating of 90 °C.
•
All wiring should use a flexible copper
(Cu) conductor.
•
The minimum size should be determi-
ned by the applicable codes. LG
Electronics recommends a size not
smaller than 4 mm
2
.
ELECTRICAL INSTALLATION
Parallel connection for more current

11
EN
Earth Grounding
•
The solar modules from LG Electronics
meet the conditions of Safety Class II.
Therefore grounding is not mandatory.
However grounding is recommended.
Also equipotential bonding must be
realized. The national directives must be
respected.
•
Specific information on the solar module
dimensions and location of grounding
holes is provided in the related data sheet.
•
One M4 stainless steel bolt, two flat
washers, one star washer, one cup washer,
one spring washer, one nut, and
12 AWG Cu wires are recommended per
solar module.
ELECTRICAL INSTALLATION
•
There is an earth hole in the center of the
module frame. Using this hole, an earth
conductor and the solar module frame
may be recommended to connect and
earth as the below drawing.
•
To prevent electric shock and fire, a pro-
tective ground must be done on the
frames of solar modules and arrays alt-
hough the solar modules from LG
Electronics meet the conditions of Safety
Class II. The national directives must be
respected.
Moduleframe
Bolt
Flat washer
Star washer
Cup washer
Grounding wire
Flat washer
Spring washer
Nut

12
MECHANICAL INSTALLATION
MECHANICAL INSTALLATION
Module Mounting
•
The guarantee for solar modules from
LG Electronics is contingent upon mo-
dules being mounted in accordance with
the requirements described in this sec-
tion.
•
The solar modules are in Application
Class A and have the Safety Class II.
Therefore they can be operated in
systems with 120 V DC and higher.
General access is not restricted.
Site Consideration
Solar modules from LG Electronics
should be mounted in a location that
meets the following requirements.
Operating Temperature
•
Maximum Operating Temperature:
+90 °C
•
Minimum Operating Temperature:
-40 °C
Design Strength
•
Snow loads (Front side): 6.000 Pa
•
Wind loads (Rear side): 5.400 Pa
Operating Environments
•
The solar modules from LG Electronics
can be operated in a location where they
could come in contact with salt water or
ammonia, if they have been tested suc-
cessfully for these operating conditions.
Please see related certificates. Please
get from LG Electronics an approval for
increased conditions.

13
EN
MECHANICAL INSTALLATION
Mounting Methods
General Information
•
Select the appropriate orientation to maxi-
mize sunlight exposure.
•
In order to prevent water from entering the
junction box, which could present a safety
hazard, module should not be mounted
such that the front/top glass faces down-
ward.
•
Clearance between the solar module
frames and structures such as roofs or
ground is required to prevent wiring da-
mage and to allow air to circulate behind
the solar module. The recommended
standoff height is a minimum of 100 mm.
•
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 from
LG Electronics is Class C after ANSI/
UL790.
•
The solar module is only IEC listed for use
when its factory frame is fully intact.
•
Do not remove or alter the solar module
frame.
•
Creating additional mounting holes may
damage the solar module and reduce the
strength of the frame.
•
A 6 mm gap between module frames
should be allowed to avoid tension
from thermal expansion.
•
The solar module may be mounted
using the following methods (torque: 8
- 12 Nm).
•
When installing modules in heavy snow
areas, special care should be taken to
install the modules in a manner that
provides sufficient design strength
while meeting local code requirements.

14
Mounting by using frame bolts holes
•
Secure the solar module to the struc-
ture using the factory mounting holes.
•
Four M6 stainless steel bolts, eight flat
washers, four spring washers, and four
nuts are recommended per solar
module.
•
For rear loads of 5400Pa, modules should
be fastened with four M8 stainless steel
bolts, four nuts, four spring washers, and
eight flat washers.
•
The module may be fastened to a sup-
port using both the outer and inner
bolt holes of the frame.
•
Each module should be securely faste-
ned at a minimum of 4 points on two
opposite sides.
MECHANICAL INSTALLATION
•
Specific information on the solar
module dimensions and location of
mounting holes is provided in the
related data sheet.
•
Tighten the bolt securely using this
combination. Place spring washer
between flat washer and nut.
Mounting by using clip or clamps
•
The module may be fastened to a sup-
port using clips or clamps on both the
long edge and the short edge of the
modules.
•
Specific information on the solar
module dimensions is provided in the
related data sheet. Specific information
on location of clamping is provided in
the Installation Instructions.
Module frame
Bolt
Flat washer
Support
Spring washer
Nut
Flat washer
more than 40 mm
more than 10 mm
more than 10 mm

15
EN
MECHANICAL INSTALLATION
LGxxxS1C(W,K)-L4, LGxxxN1C(W,K)-G4
Mounting Type
Clamping Type
(Long Side)
Clamping Type
(Short Side)
Use four mounting holes on two opposite sides.
Use four clamps on the short frame and
two clamps at the center of the long frame.
Use four clamps on the short 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
Clamping Range
(250 mm)
150 mm 150 mm
Clamping Range:
From module Edge
to 270 mm
Clamping Range:
From module Edge
to 120 mm
Center ± 100mm
Center ± 100mm

16
DISCLAIMER OF LIABILITY / DISPOSAL
Disclaimer of Liability
•
Since the use of this Installation
Instructions and the conditions or me-
thods of installation, operation, use and
maintenance of the module are bey-
ond the control of LG Electronics,
LG Electronics does not assume res-
ponsibility and expressly disclaims
liability for loss, damage, injury or
expense arising out of or in any con-
nection with such installation, opera-
tion, use or maintenance of the
module.
•
LG Electronics assumes no responsibi-
lity for any infringement of patents or
other rights of third parties that may
result from use of the module. No li-
cense is granted by implication or
otherwise under any patent or patent
rights.
Disposal
•
This crossed-out wheeled bin symbol indi-
cates that waste electrical and electronic
products (WEEE) should be disposed se-
parately from the municipal waste stream.
•
Old electrical products can contain hazar-
dous substances so correct disposal of
your old module will help prevent potential
negative consequences for the environ-
ment and human health. Your old module
may contain reusable parts that could be
used to repair other products, and other
valuable materials that can be recycled to
conserve limited resources.
•
You can take your module either to the
shop where you purchased the product, or
contact your local government waste of-
fice for details of your nearest authorized
WEEE collection point. For the most up to
date information for your country please
see www.lg.com/global/recycling
DISCLAIMER OF LIABILITY / DISPOSAL

17
EN
TRANSPORTING AND STORAGE
•
Do not loose the banding, when module is
transported by truck, ship and etc. In case
of loose banding, module will be shaken,
which may cause damage, like glass brea-
king.
•
Do not stack on more than one pallet. The
maximum height is two pallets. Severe
stacking can give stress to the module
and may cause product damage.
TRANSPORTING AND STORAGE

Document: II-G4L4-IEC-V6-EN-201606
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.
In case of conflict with other languages of this Installation Instruction the German version shall prevail.

More information available at
[e-mail]
www.lg-solar.com
LG Electronics Deutschland GmbH
Berliner Straße 93
40880 Ratingen,
Germany
Tel. [phone]
Fax [phone]
Status: 06/2016. Errors and amendments excepted.