Sunerg Solar Energy XMCH66400BW+H User manual

Single glass crystalline silicon PV Modules
installation manual
Rev.1_2022

Crystalline Silicon Solar Module Products Installation Manual (IEC)
1Scope
This installation manual specifies the installation and maintenance requirements for crystalline silicon PV
modules (hereinafter referred to as "solar modules") manufactured by Sunerg Solar. (hereinafter referred to as
"Sunerg" ).
This installation manual is intended for the installation and maintenance of solar modules (hereinafter
referred to as "solar modules"), and helps customers to correctly install the photovoltaic power generation
system, so that the design system can realize its potential. This installation manual does not apply to the
installation of the Sunerg double glass modules and conventional modules.
2The introduction of installation manual
2.1 Overview
Thanks for choosing the crystalline silicon PV module of Sunerg Solar This manual contains important
electrical and mechanical installation information. For correct installation and stable power output, please
install and maintain the modules Carefully read and understand all installation instructions in the manual, and
Keep this manual in a safe place for future reference (care and maintenance) and in case of sale or disposal of
the modules.
This manual does not constitute a warranty, expressed or implied. Sunerg does not assume responsibility
and expressly disclaims liability for loss, damage, or expense arising out of or in any way connected with
installation, operation, use or maintenance of modules.
The PV modules should be installed in accordance with all safety precautions and local laws and
regulations of this manual and should be installed and serviced by qualified personnel with knowledge of the
mechanical and electrical requirements of the system.
The mechanical and electrical installation of the PV modules shall be made in accordance with applicable
laws and regulations, including electrical, construction and electrical connection requirements. These
regulations vary depending on the installation site, such as building roofs, surface mounts, in-vehicle
applications, and so on. The requirements may vary depending on the installation system voltage, the use of
DC or AC. Please refer to the relevant local laws and regulations.
Any questions, please contact with the salesman or customer service personnel of Sunerg Solar for further
explanations.
2.2 Applicable products
This manual is intended for use with the following solar modules:
Monocrystalline PERC PV modules（Horizontal）: XMCH66400BW+H; XMCH120400B+H;
XMCH120410BW+H

2
Module dimensions and electrical performance data are details in the corresponding technical
specifications.
3Product information
3.1 Section structure and component description of PV modules
1、Frame
2、Glass
3、EVA
4、Solar Cell
5、Backsheet
6、Adhesive
7、Junction box
8、Cable
9、Connector
10、Lable
11、Ground hole
12、Mounting hole
13、Drainage hole
14、Stiffener
Figure 1 Section structure and module description
3.2 Module tag information
Each PV module is affixed with two kinds of labels, providing the following information:
a) Label: Describes the product name, PV module model, nominal power, rated voltage, rated current,

open circuit voltage, short circuit current, maximum system voltage, PV module size and weight
under standard test conditions.
b) Series number: Each module has a unique bar code number, each bar code number has 20 letters and
numbers. The bar code is permanently encapsulated inside the module, as can be seen clearly from
the top right corner of the module. The bar code number allows you to trace information about the
module production process.
3.3 Module electrical performance parameters
The electrical performance parameters of the module were measured under standard test conditions
(irradiance of 1000 W / m², AM 1.5 spectra, ambient temperature of 25 ° C) with a test uncertainty of ± 3%.
The maximum system module voltage is 1500V. Refer to the following table for electrical performance
parameters.
4Installation
4.1 General safety
4.1.1 Sunerg Solar’s modules have been evaluated by according to IEC61215 and IEC61730, application class
A, modules rated for use in this application class may be used in system operating at greater than 50V DC or
240W. The safety class of the module is Class II, the class of fire rating is Class C（According to the standard
is UL790）, and the maximum series fuse is 20A.
4.1.2 The installer should abide by the relevant local laws and regulations when installing module. It is need to
obtain the required certificates in advance when necessary, such as the building permit.
4.1.3 Installing solar photovoltaic systems require specialized skills and knowledge. Installation should be
performed only by qualified person. Installers should assume the risk of all injuries that might occur during
installation, such as electric shock.
4.1.4 Photovoltaic modules are designed for outdoor use. Modules may be mounted on ground, rooftops,
vehicles or boats. Proper design of support structures is the responsibility of the system designers or installers.
When modules are mounted on rooftops, fire-protection rating of the final structure should be considered, and
also the later maintenance. The rooftops and support structure for PV system should only be certified by
architectural experts or engineer, which have a formal complete structure analysis results.
4.1.5 For your safety, do not install the modules without safety precautions.
4.1.6 For your safety, do not install or handle the modules under wet or adverse environment, including but not
limited to strong wind, gusty wind, frosted roof surfaces, wet environment.
4.2 Electrical properties safety
4.2.1 When a module is exposed to sunlight or other light sources, a direct current is present inside the module,
and electrical contact with the module may result in an electrical shock hazard.
4.2.2 In order to avoid arc and electric shock, please do not disconnect electrical connections under load. Keep
all electrical connectors dry and clean, and ensure that they are in proper working condition. Do not insert
other metal objects into the connector, or in any other way.
4.2.3 Do not apply paint or adhesive to module surface. Do not wipe modules with corrosive chemicals.
4.2.4 Do not use mirrors or other magnifiers to focus sunlight on the modules. Do not expose the backside of

4
modules directly to sunlight for a long time.
4.2.5 Do not change the configuration of the bypass diodes. Do not disassemble the modules.
4.2.6 Do not contact with module surface when the module is wet unless to clean the modules, please
following requirements mentioned in this manual when cleaning.
4.3 Handling safety
4.3.1 Do not open the box until it reaches the installation location. Keep the package in a ventilated and dry
place.
4.3.2 PV modules Unpacking Please refer to Unpacking manual of standard package of Sunerg Solar
photovoltaic modules. During all handling procedures, make sure that the modules are not subject to large
vibrations, that the modules fall to the floor or that objects fall on the module, as this will Damage to the
modules or solar cell. Special care must be taken not to bump, scrape, or press against the back of the module.
Keep children and unauthorized person away from the modules while transporting or installing them. Improper
transportation or placing may lead to glass breakage or power loss of the modules, resulting in the loss of the
use value of modules.
4.3.3 Handle modules with care, lift and put down modules gently. It is forbidden to carry or lift the modules
by grabbing the junction box or cables. Two or more people must hold the module with both hands.
4.3.4 Do not step on, stand or sit on the module, which can damage the module and create a risk to people.
4.3.5 Do not place any heavy objects on the front or back of the module, and do not place the module on a
sharp object surface.
4.4 Installation safety
4.4.1 Abide by the safety regulations for all other modules used in the PV system, including wiring and cables,
connectors, controllers, inverters, storage batteries, etc., and use suitable equipment, connectors, wiring and
mounting system for a PV system. If the PV system is used in storage batteries, the configuration with the
modules should follow the advice of the storage batteries manufacturer. The same size, the same specifications
of the model can be connected in series.
4.4.2 Do not install or handle the modules when they are wet or during strong wind. Keep the junction box’s
cover closed.
4.4.3 Modules of the glass with the role of protection modules, unreasonable operation will cause glass broken.
Damaged modules have the risk of electric shock and fire, such modules can not be repaired or maintained,
should be replaced immediately.
4.4.4 When exposed to direct sunlight, one individual solar module may generate DC voltages greater than 30
volts. It is extremely dangerous to contact it.
4.4.5 To reduce the risk of electric shock or burning, you can install modules with opaque material on the
surface of the module. The mounting of the array of modules must be carried out with an isolating solar
installation. Do not wear metal rings, watches, earrings and other metal accessories when installing or
servicing PV systems. Do not touch the electrical parts of the module directly by hand. Use an insulating tool
to make electrical connections and keep the tool dry.
4.4.6The triangle hole punched on the backside frame of the module is the drainage hole which cannot be
blocked.
4.4.7 The maximum system voltage indicated in the rating label is 1500 V. During the system Installation, the
maximum open circuit voltage in series cannot exceed the maximum system voltage.

4.4.8 During modules interconnection, ensure to fix the connecting cables to supporting bracket, so as to
restrict the swing amplitude of the slack part of the cables.
4.4.9 Abide by the allowable minimum bending radius of the cables (suggest no less than 43mm).
4.4.10 Always protect the cable with conduit where animals or children can touch it.
4.4.11 Please use the connector which is specially designed for photovoltaic system, and assemble it with the
tools recommended or specified by the manufacturer. In case that the connector applicable to the solar
photovoltaic system is required, please contact the local supplier. Ban different connectors to plug each other.
4.4.12 Make sure that the polarity is correct when connecting the module with inverter, storage battery or
combiner box to avoid the damage of bypass diodes in the modules due to incorrect polarity.
4.4.13 Do not drill holes in the frame, this may reduce the mechanical load ability and cause corrosion of the
frame.
4.4.14 Do not scratch the anodized coating of the frame (except for grounding connection), this may cause
corrosion of the frame or reduce the mechanical load ability.
4.4.15 Modules can't be used to replace the roof and wall materials, partial replacement is not allowed.
4.4.16 Any part (including nameplate) of modules supplied by Sunerg Solar can't be dismantled without
permission.
5 Installation condition
5.1 Working environment
Sunerg Solar’s PV module should operate in the following environmental conditions:
5.1.1Ambient temperature: -20℃ to +45℃
5.1.2 Operating temperature of the module: -40℃ to +85℃
5.1.3 Humidity: 85%RH
5.1.4 Mechanical load bearing capacity: the modules have passed the mechanical load test of wind pressure of
1200Pa and snow pressure of 5400pa; at the same time, they have passed the mechanical load test of wind
pressure of 2400Pa and snow pressure of 3600Pa. (Only limited to the PV module models mentioned in this
manual).
Note: The module mechanical load is based on the installation method and installation site, in the calculation
of mechanical load by the professional installer according to the system design requirements to calculate.
5.2 Installation position
5.2.1 In most applications, PV modules should be installed in a location where they will receive maximum
sunlight throughout the year. In the northern hemisphere, modules should typically face south, and in the
southern hemisphere, modules should typically face north.
5.2.2 The module shall be installed in the place where the sunshine is adequate. the module surface shall not be
partly shaded by trees, building, clothes, tools, packaging materials, etc. because these objects will form
shadow in the module surface leading to loss of system output power.
5.2.3 The module shall be installed in the well-ventilated place; meanwhile, enough space for airiness shall be
sated at the back and sides of the module, so that the heat generated during operation can be radiated in time.
5.2.4 Modules can not be used in other excessive and harsh environments, such as hail, snow, sand, smoke, air
pollution, soot, flammable gases, near open flames, and highly corrosive substances (salt, salt spray, salt water,
acid rain) , As this will affect the module's safety and performance. If the installation environment is special,

6
such as the seaside, farm, high humidity or wind and other large environment, please consult your local dealer
for professional support and confirmation. If you need to be installed at a high altitude, the altitude should not
exceed 2000m.
5.2.5 PV modules have passed IEC61701 salt-mist, but galvanic corrosion can occur between the aluminum
frame of the modules and mounting or grounding hardware is comprised of dissimilar metals. Modules can be
installed at seaside locations 50m to 500m from the sea, but the components should be protected against
corrosion. For locations ≥500m from the sea, it is low risk with salt-mist corrosion, only annual preventive
maintenance is required.
5.2.6 Modules should be installed in suitable building, or other suitable place to install modules (such as the
ground, garage, building facades, roof).
5.2.7 If modules are installed in locations with frequent lightning activity, the modules must be protected
against lightning strikes.
5.2.8 Do not install the modules in this location with water immersion or near the sprinkler.
5.2.9 The pressure of the wind or snow after installation of the modules must not exceed the maximum
allowable load.
5.3 Tilt angle selection
5.3.1 The tilt angle of the Modules is measured between the surface of the modules and a horizontal ground
surface, the modules generates maximum power output when it faces the sun directly, as shown in figure 2.
5.3.2 Modules each element in series with the same array must be oriented in the same direction and angle.
Different installation directions and angles will cause the modules to absorb the total solar radiation difference,
causing the loss of output power, thus reducing the operating efficiency of the system.
5.3.3 The maximum power is generated when the sun is directed to the module, select the best installation
angle should be considered when the winter module power output. But external or otherwise artificially
concentrated sunlight shall not be directed onto the front or back face of the PV module.
5.3.4 In order to facilitate the cleaning modules and modules in the rain when the surface dust is easily washed
away by rain. For detailed installation angles, follow the advice given by the experienced PV module installer.
Figure 2 Module tilt angle
6Mechanical installation
All of the installation methods described here are for reference only. Sunerg Solar is not responsible for
providing the relevant installation parts and module installation services.
6.1 Conventional requirement
6.1.1 Ensure that the installed modules and supporting rail of modules are strong enough, the entire PV system
consisting of modules must be able to withstand anticipated mechanical pressure. The installer must provide

the guarantee. The installation supporting rail must be tested by the third-party organization with the analysis
ability of Static Mechanical according to the local national or international standards.
6.1.2 The supporting rail must be made of environmental corrosion, anti-rust and UV-resistant materials.
6.1.3 Modules must be securely fastened to the supporting rail.
6.1.4 Drilling holes on the surface of module glass or drilling additional mounting holes on module frames
may void the warranty.
6.1.5 Forces generated during thermal expansion and contraction of the supporting rail may influence the
performance and use of the module, so make ensure that the minimum distance between two neighboring
frames is 10mm, but in order to ensure good ventilation. Suggest this distance between two neighboring
frames is 30mm.
6.1.6 In areas with large snow cover in winter, select a higher mounting bracket so that the lowest point of the
module will not be covered by snow for long periods of time. In addition, the lowest point of the module is
high enough to prevent the module from being obstructed by vegetation or trees.
6.1.7 The bearing surface of the supporting system must be smooth without any twist or deformation, and all
of them shall be at the same height without dislocation.
6.1.8 The module mounting method does not result in electrochemical corrosion between the aluminum frame
of the module and the different metals.
6.2 Three kinds of Mounting
6.2.1 Roof mounting
6.2.1.1 It is necessary to provide a special supporting rail for the roof mounting. When installing a module on a
roof or building, ensure that it is securely fastened and cannot fall or be damaged as a result of strong winds or
heavy snow. During roof mounting, check the building codes being used to ensure that the building and its
structure where the module is installed have adequate bearing and sealing capacity. The roof when penetrated
during module installation shall be properly sealed to avoid rainwater leakage.
6.2.1.2 To be suitable for operation, reduce steam condensation and facilitate the ventilation & heat dissipation
of the module during tile installation, the module shall be parallel to the wall or roof surface of the building,
and the distance between module and surface of the wall or roof shall be at least 50mm to prevent wiring
damage and to allow air circulation, ventilation and heat dissipation behind the module. For stacking type
installation, the module shall be installed on the fire-resistant roof. The Fire Resistance Rated Class of the
modules is Class C, and the modules are suitable for mounting on an above Class A roof. Do not install
modules on a roof or building during strong wind.
6.2.1.3 For the roof system installed in the area with relatively heavy snowfall or snow cover in the
meteorological records, the installer shall reinforce the supporting system at the lower frame of the module, in
order to prevent the lower frame from being pressed and damaged by the falling snow or freezing of the melt
ed snow. Sunerg Solar suggests selecting the support reinforcing mechanism shown in figure 3.
The clamp
The upper module
The support rail
The under module
The strength support

8
Figure 3 Schematic diagram of reinforcement mounting of module
6.2.2 Pole mounting
When installing a module on a pole, choose a pole and supporting rail that will withstand the anticipated
wind power of the local area. The pole must be constructed on a solid foundation.
6.2.3 Ground mounting
Select the height of the mounting system to prevent the lowest edge of the module from being covered by
snow for a long time in winter in areas with heavy snowfalls. The module shall be installed on the supporting
rail with appropriate height instead of being directly laid on the ground. In addition, the lowest portion of the
module shall be high enough (≥900 mm) from ground, so that it is not shaded by plants and trees, or damaged
by sand and stone driven by wind, or not shaded by the mud splashed by rain water.
6.3 Installation methods
6.3.1 General rules
a) Modules can be fastened on the supporting system using screw bolts or clamps. Modules must be
installed according to the following methods or instructions. If not the warranty may be void.
b) Sunerg modules have reached the IEC standard on the mechanical load requirements. When
mounting, fasten the screws through the 4 or 6 symmetrical mounting holes on the inside of the
aluminum bezel or use the pressure clamp to secure the module to the supporting rail, Sunerg
module can withstand the wind pressure of 2400Pa and the snow pressure of 5400Pa (Only the
module models covered in this manual are available）, it is recommended that the system designer or
installer perform the load calculations.
c) The supporting rail and other materials required (such as screw) shall be made of durable, resistance
to environmental corrosion, anti-rust and UV-resistant materials.
6.3.2 Screw installation
6.3.2.1 Use anti-corrosion M8 bolts to fix through the mounting holes on the module frame. Each module
needs to be fixed on 4 or 8 mounting holes, as shown in Table 1 Schematic diagram of mounting holes for
fixed modules. If you need to strengthen the installation, it is recommended to use the 6.3.3 fixture installation
method.
6.3.2.2 When fixing with M8 bolts, spring washers and flat washers must be added to 4 or 8 symmetrical
mounting holes. See Table 1 for bolt fixing diagrams. The recommended torque for tightening screws is
from12N.m to16N·m . The recommended accessories are shown in Table1:
Table 1 Bolt fixing assembly
Schematic diagram of mounting hole for fixed
modules
Screw bolts fasten method
Recommend accessories
Module
M8 Screw
Flat washer
Spring washer
M8 Nut
The Support
rail
Part name
material
Dimension
Screw
Stainless steel
M8×
16mm