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Do not mark the modules with sharp instrument. Particular attention should be taken to avoid module backsheet to
come in contact with sharp objects, as scratches may directly affect product safety.
Do not leave a module unsupported or unsecured.
Do not change the wiring of bypass diodes.
Keep all electrical contacts clean and dry.
Product identification
Each module is fitted with two identical barcodes (one on the laminate under the front glass, the second on the module
rear cover) for its unique identification. Each module has a unique serial number with 13 (before 2013/03) or 14 digits
(after 2013/03) digits.
A nameplate is also affixed on the rear side of each module. This nameplate defines the model type, as well as the main
electrical and safety characteristics of the module.
5.0 MODULE INSTALLATION
Precautions and General Safety
Before installing modules, contact the appropriate authorities for site, installation and inspection
permission and requirement. .
Check applicable building codes to ensure that the construction or structure (roof, facade, support, etc.)
can withstand the module system load.
CS‐series solar modules have been qualified for Application Class A (equivalent to Safety Class II requirements). Modules
rated under this class should be used in systems operating at voltage above 50V or power above 240W, where general
contact access is anticipated.
When installing modules, please ensure the assembly is mounted over a fire resistant roof covering rated for the
application. Canadian Solar modules have been listed as Class C according to UL790 standard.
The fire rating of this module is valid only when mounted in the manner specified in the mechanical
mounting instructions.
CAUTION: In any case DO NOT STAND OR STEP on the modules, as localized high loads may induce
severe micro‐cracks at the cell level, which in turn may compromise module reliability. Failure to
comply with above caution will void Canadian Solar Inc warranty.
Environmental conditions
The module is intended for use in general open climates, as defined in IEC 60721‐2‐1: Classification of environmental
conditions Part 2‐1: Environmental conditions appearing in nature ‐ temperature and humidity.
Do not install modules near naked flames or flammable materials.
Do not expose modules to artificially concentrated light sources.
Do not immerse modules in water or constantly expose modules to water (either fresh or salt) (i.e. from fountains, sea
spray).
Exposing modules to salt (i.e. marine environments) and sulfur (i.e. sulfur sources, volcanoes) risks module corrosion.
Requirements of installation
Ensure that the module meets the technical requirements of the system as a whole.
Ensure that other systems components do not exert damaging mechanical or electrical influences on the modules.
Modules can be wired in a series to increase voltage or in parallel to increase current. To connect in series, connect cables
from the positive terminal of one module to the negative terminal of the next module. To connect in parallel, connect
cables from the positive terminal of one module to the positive terminal on the next module.
Quantity of bypass diodes provided can vary depending on model series.
Connect the quantity of modules that match the voltage specifications of the inverters used in the system. Modules must
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EN-Rev 2.4 Copyright© May 2013.CanadianSolarInc.
not be connected together to create a voltage higher than the permitted maximum system voltage, even under the worst
local temperature conditions (see table 1 for correction coefficients to apply for open‐circuit voltage).
A maximum of two strings can be connected in parallel without using over‐current protection device (fuses...)
incorporated in series within each string. Three of more strings can be connected in parallel if an appropriate and
certified over‐current protection device is installed in series with each string.
Similar electrical performance modules should be connected in same series to avoid or minimize mismatch effects in
arrays.
To minimize risk in the event of an indirect lightning strike, avoid forming loops when designing the system.
The recommended maximum series fuse rating is tabulated in annex.
Modules should be firmly fixed in place in a manner suitable to withstand all expected loads, including wind and snow
loads. A minimum clearance of 6.5 mm (1/4 of an inch) or more between modules is required to allow for thermal
expansion of the frames.
Small openings for water draining on the underside of the module should not be blocked after mounting.
Optimum orientation and tilt
Find out the optimum orientation and tilt of the PV modules for your region to achieve the maximum annual yield.
Generation of maximum power occurs when sunlight shines perpendicularly onto the PV modules.
Avoid shading
Even the slightest partial shading (e.g., from dirt deposits) will cause a reduction in yield. A module is considered
"shadow‐free" if it is unobstructed across its entire surface for the whole year. Even on the shortest day of the year,
unobstructed sunlight can reach the module.
Reliable ventilation
Sufficient clearance (at least 10 cm) between the module frame and the mounting surface is required to allow for cooling
air to circulate around the back of the module. This also allows for condensation or moisture to dissipate.
5.1 MODULE WIRING
Correct wiring scheme
When designing the system, avoid forming loops (to minimize risk in the event of an indirect lighting strike). Make sure
that wiring is correct before starting up the system. If the measured open circuit voltage (Voc) and short‐circuit current
(Isc) differ from the specifications, then there is a wiring fault.
Correct connection of plug connectors
Make sure that the connection is safe and tight. The plug connector should not receive outer stress. The connector
should only be used to connect the circuit. It should never be used to turn the circuit on and off.
Use of suitable materials
Use special solar cable and suitable plugs only (wiring should be placed in conduit that is sunlight‐resistant or, if exposed,
should be sunlight‐resistant) in accordance with local fire, building and electrical code. Ensure that they are in perfect
electrical and mechanical condition.
The permitted type of solar cable is single conductor, 2.5‐10 mm
withstand the maximum possible system open‐circuit voltage (such as TUV 2PfG1169 approved). The conductor material
should be copper only. Select a suitable conductor gauge to minimize voltage drop.
Cable protection
Secure the cables to the mounting system using UV‐resistant cable ties. Protect exposed cables from damage with
appropriate precautions (e.g. locate them within plastic conduit). Avoid exposure to the direct sunlight.
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2
(8‐14 AWG), 90 °C wet rated, with proper insulation to
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