CanadianSolar CS1V-MS User manual

For professional use only
INSTALLATION MANUAL
OF STANDARD SOLAR
MODULES

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CONTENTS
1.0 GENERAL INFORMATION .................................................................................................................................................. 3
1.1 INSTALLATION MANUAL DISCLAIMER ............................................................................................................................ 3
1.2 LIMITATION OF LIABILITY ................................................................................................................................................ 3
2.0 SAFETY PRECAUTIONS ....................................................................................................................................................... 3
3.0 MECHANICAL / ELECTRICAL SPECIFICATIONS ................................................................................................................ 4
4.0 UNPACKING AND STORAGE .............................................................................................................................................. 4
5.0 MODULE INSTALLATION ................................................................................................................................................... 6
5.1 MODULE WIRING ............................................................................................................................................................... 9
5.2 GROUNDING ..................................................................................................................................................................... 11
6.0 MOUNTING INSTRUCTIONS ........................................................................................................................................... 12
6.1 MOUNTING METHOD: BOLTING .................................................................................................................................... 13
6.2 MOUNTING METHOD: CLAMPING ................................................................................................................................. 15
6.3 INSERTION SYSTEMS ....................................................................................................................................................... 22
7.0 MAINTENANCE ................................................................................................................................................................. 23
8.0 MODULE CLEANING GUIDELINES .................................................................................................................................. 23
ANNEX A: MECHANICAL AND ELECTRICAL RATINGS ......................................................................................................... 25
ANNEX B: GUIDANCE ON MODULE TEMPERATURE FOR SEVERAL LOCATIONS .............................................................. 37
ANNEX C: INSTALLATIONS USING MODULE LEVEL POWER ELECTRONICS ..................................................................... 38
ANNEX D: COASTAL AREA ANTI-CORROSION INSTALLATION GUIDELINES ................................................................... 39
AMENDED EDITIONS AND DATES ......................................................................................................................................... 43

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1.0 GENERAL INFORMATION
This general manual provides important safety
information relating to the installation, maintenance and
handling of CS-series solar modules.
Professional installer must read these guidelines carefully
and strictly follow these instructions. Failure to follow
these instructions may result in death, injury or property
damage. The installation and handling of PV modules
require professional skills and should only be performed
by qualified professionals. The installers must inform end-
users (consumers) the aforesaid information accordingly.
The word "module" or "PV module" used in this manual
refers to one or more CS-series solar modules.
This manual is only valid for the standard module types
CS1V-MS, CS1VL-MS, CS1U-MS, CS1H-MS, CS1Y-MS, CS3U-
P, CS3K-P, CS3W-P, CS3L-P, CS3W-MS, CS3L-MS, CS3LA-MS,
CS3LB-MS, CS1HA-MS, CS3Y-MS, CS3Y-P, CS3N-MS, CS3SA-
MS, CS6W-MS, CS6R-MS, CS7L-MS, CS7L-MS-R and CS7N-
MS.
Please retain this manual for future reference. We
recommend checking www.csisolar.com regularly for the
most updated version.
1.1 INSTALLATION MANUAL DISCLAIMER
The information contained in this manual is subject to
change by Canadian Solar without prior notice. Canadian
Solar gives no warranty of any kind whatsoever, either
explicitly or implicitly, with respect to the information
contained herein.
In the event of any inconsistency among different
language versions of this document, the English version
shall prevail. Please refer to our product lists and
documents published on our website at:
www.csisolar.com as these lists are updated on a regular
basis.
1.2 LIMITATION OF LIABILITY
Canadian Solar shall not be held responsible for damages
of any kind, including – without limitation – bodily harm,
injury or damage to property, in connection with handling
PV modules, system installation, or compliance or non-
compliance with the instructions set forth in this manual.
2.0 SAFETY PRECAUTIONS
Warning
Before attempting to install, wire, operate
and/or service the module and other
electrical equipment, all instructions should be read and
understood. PV module connectors pass direct current
(DC) when exposed to sunlight or other light sources.
Contact with electrically active parts of the module, such
as terminals, can result in injury or death, irrespective of
whether or not the module and the other electrical
equipment have been connected.
Avertissement
Toutes les instructions devront être lues et
comprises avant de procéder à l’installation,
le câblage, l’exploitation et/ou l’entretien des panneaux.
Les interconnexions des panneaux conduisent du courant
continu (CC) lorsque le panneau est exposé à la lumière
du soleil ou à d’autres sources lumineuses. Tout contact
avec des éléments sous tension du panneau tels que ses
bornes de sortie peut entraîner des blessures ou la mort,
que le panneau soit connecté ou non.
General Safety
All modules must be installed by licensed electricians in
accordance to the applicable electrical codes such as, the
latest National Electrical Code (USA) or Canadian Electric
Code (Canada) or other national or international
applicable electrical codes.
Protective clothing (non-slip gloves, clothes,
etc.) must be worn during installation to
prevent direct contact with 30 V DC or
greater, and to protect hands from sharp
edges.
Prior to installation, remove all metallic
jewelry to prevent accidental exposure to
live circuits.
When installing modules in light rain,
morning dew, take appropriate measures
to prevent water ingress into the
connector.

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Do not allow children or unauthorized
persons near the installation site or
module storage area.
 Do not install modules in strong wind.
 Use electrically insulated tools to reduce the risk of
electric shock.
 If the disconnects and over current protection devices
(OCPDs) cannot be opened or the inverter cannot be
powered down, cover the fronts of the modules in the
PV array with an opaque material to stop the
production of electricity when installing or working on
a module or wiring.
 Do not use or install damaged modules.
 Contact with module surfaces or frames may cause
electric shock if the front glass is broken or the
backsheet is torn.
 The PV module does not contain any serviceable parts.
Do not attempt to repair any part of the module.
 Keep the junction box cover closed at all times.
 Do not disassemble a module or remove any module
part.
 Do not artificially concentrate sunlight on a module.
 Do not connect or disconnect modules when current
from the modules or an external source is present.
3.0 MECHANICAL / ELECTRICAL
SPECIFICATIONS
Module electrical ratings are measured under Standard
Test Conditions (STC) of 1000 W/m2 irradiance, with an
AM1.5 spectrum, and a cell temperature of 25°C. Detailed
electrical and mechanical characteristics of Canadian
Solar crystalline silicon PV modules can be found in Annex
A (Module Specifications) on www.csisolar.com. Main
electrical characteristics at STC are also stated on each
module label. Please refer to the datasheet or the product
nameplate for the maximum system voltage.
Under certain conditions, a module may produce more
current or voltage than its Standard Test Conditions rated
power. As a result, the module short-circuit current under
STC should be multiplied by 1.25, and a correction factor
should be applied to the open-circuit voltage (see Table 1
below), when determining component ratings and
capacities. Depending on your local regulations, an
additional 1.25 multiplier for the short-circuit current
(giving a total multiplier of 1.56) may be applicable when
sizing conductors and fuses.
Table 1: Low temperature correction factors for open-
circuit voltage
Lowest Expected Ambient
Temperature (°C/°F)
Correction Factor
24 to 20 / 76 to 68 1.02
19 to 15 / 67 to 59 1.04
14 to 10 / 58 to 50 1.06
9 to 5 / 49 to 41 1.08
4 to 0 / 40 to 32 1.10
-1 to -5 / 31 to 23 1.12
-6 to -10 / 22 to 14 1.14
-11 to -15 / 13 to 5 1.16
-16 to -20 / 4 to -4 1.18
-21 to -25 / -5 to -13 1.20
-26 to -30 / -14 to -22 1.21
-31 to -35 / -23 to -31 1.23
-36 to -40 / -32 to -40 1.25
Alternatively, a more accurate correction factor for the
open-circuit voltage can be calculated using the following
formula:
𝐂Voc = 𝟏 − 𝜶𝑽𝒐𝒄 × (𝟐𝟓 − 𝐓)
T (°C) is the lowest expected ambient temperature at the
system installation site.
αVoc (%/°C) is the voltage temperature coefficient of the
selected module (refer to corresponding datasheet).
Electrical calculations and design must be performed by a
competent engineer or consultant.
Please contact Canadian Solar’s technical support team
for additional information pertaining to engineering
optimization and approval of project specific module
string lengths.
4.0 UNPACKING AND STORAGE
PRECAUTIONS
 Modules should be stored in a dry and ventilated

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environment to avoid direct sunlight and moisture. If
modules are stored in an uncontrolled environment,
the storage time should be less than 3 months and
extra precautions should be taken to prevent
connectors from being exposed to moisture or sunlight,
like using connector endcaps. In any circumstance, for
pallets of modules packaged in landscape orientation,
stacking of no more than two layers is allowed, for
pallets of modules packaged in portrait orientation,
stacking is not allowed.
 When unloading modules pallets from flat truck, please
use a crane or a forklift to remove the module pallets.
When unloading modules pallets from containers,
please use a forklift to remove the module pallets from
the container or trailer. Do not move any pallets within
the container or trailer without properly lifting them
first. The forklift should be close to the ground in order
to avoid the top of module pallets touching the top of
the cabinet door. The thickness of forklift teeth should
be less than 75mm, and the length of the forklift teeth
should be longer than 2300mm, when unloading 6W-
MS module pallets from the short side. For unloading
CS7N-MS and CS7L-MS modules, the thickness of
forklift teeth should be less than 75mm, the length of
the forklift teeth should be longer than 1250mm and
the width of forklift teeth should be wider than 600mm
(from middle to middle of the forklift teeth). Consult
your Canadian Solar representative for more detailed
unloading instructions.
 Unpack module pallets carefully, following the steps
shown on the pallet. Unpack, transport and store the
modules with care.
 Modules must always be unpacked and installed by two
or three people. Always use both hands when handling
modules.
For modules vertically packed lying on the
short side (CS7L and CS7N), it is
recommended to support the unpacked
modules by one person during the unpacking process.
Please use an anti-tipping structure that can be built with
the pallet’s own wooden frame according to the
instructions below:
 During unpacking, the unpacked modules should be
properly fixed. After unpacking, it is recommended to
place the remaining modules in the pallet shall be
placed horizontally on a pallet not exceeding the total
number 12 of in one stack. Visit our website or contact
your Canadian Solar representative for more detailed
unpacking requirements.
 Do not lift modules by their wires or junction box, lift
them by the frame.
 Do not allow the panels to sag or bow under their own
weight when being carried.
 Stacks of modules should contain no more than 12
modules, and the frames should be aligned.
 Do not place excessive loads on the module or twist the
module frame.
 Do not stand, step, walk and/or jump on modules
under any circumstances. Localized heavy loads may
cause severe micro-cracks at cell level, which in turn
may compromise module reliability and void Canadian
A
nti
-
tipping
system

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Solar’s warranty.
 Do not leave the module backsheet directly in contact
with the support structure underneath when handling
or installing the module.
 Do not carry modules on your head.
 Do not drop or place objects (such as tools) on the
modules.
 Do not use sharp instruments on the modules.
Particular care should be taken to avoid module
backsheets being damaged by sharp objects, as
scratches may directly affect product safety.
 Do not leave modules unsupported or unsecured.
 Do not change the wiring of bypass diodes.
 Keep all electrical contacts clean and dry at all times.
 Do not expose the modules and its electrical contacts
(connectors) to any unauthorized chemical substance
(e.g. oil, lubricant, pesticide, etc.).
PRODUCT IDENTIFICATION
Each module has three identical barcodes (one in the
laminate under the front glass, the second on the rear
side of the module and the third on the frame) that act as
a unique identifier. Each module has a unique serial
number containing 14 digits or 16 digits.
A nameplate is also affixed to the rear of each module.
This nameplate specifies the model type, as well as the
main electrical and safety characteristics of the module.
5.0 MODULE INSTALLATION
PRECAUTIONARY MEASURES AND
GENERAL SAFETY
 Prior to installing modules please obtain
information about any requirements and necessary
approvals for the site, installation and inspection from
the relevant authorities.
 Check applicable building codes to ensure that the
construction or structure (roof, facade, support, etc.)
can bear the module system load.
 Canadian 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.
 Canadian Solar standard modules have been certified
as Type 1 or Type 2 according to UL 61730 and Class C
according to IEC 61730-2 for fire class performance,
please refer to the datasheet or the product nameplate
for the detailed types.
 Consult your local authority for guidelines and
requirements for building or structural fire safety.
UL 61730 SYSTEM FIRE RATING REQUIREMENTS
 Photovoltaic systems composed of UL 61730 certified
modules mounted on a UL 2703 certified mounting
system should be evaluated in combination with roof
coverings in accordance with UL 61730 standard, with
respect to meeting the same fire classification as the
roof assembly.
 Mounting systems with a System Fire Class Rating
(Class A, B or C), tested in conjunction with “Type 1” or
“Type 2” fire rated modules, are considered acceptable
for use with Canadian Solar modules, provided that the
mounting system does not violate any other
requirements of this manual.
 Any mounting system limitations on inclination or
accessories required to maintain a specific System Fire
Class Rating should be clearly specified in the
installation instructions and UL 2703 certification of the
mounting system supplier.
 When installing modules, ensure the assembly is
mounted over a fire-resistant roof covering rated for
the application.
 The fire rating for this module is only valid when the
product is installed as specified in the mechanical
mounting instructions.

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ENVIRONMENTAL CONDITIONS
 PV modules are intended for use in general open-air
climates, as defined in IEC 60721-2-1: Classification of
environmental conditions Part 2-1: Environmental
conditions appearing in nature. Temperature and
humidity.
 It is recommended that PV modules are installed in an
environmental temperature range of -40°C to + 40°C.
For modules operating under such conditions, the 98th-
percentile of the module operational temperature must
be of 70°C or lower. CS7L-MS-R and CS6R-MS modules
are designed for application where the 98th-percentile
of the module operational temperature is up to 80°C.
 This environmental temperature range encompasses
many locations and installation styles in these locations.
Annex B provides the reader with modelled PV module
temperature examples, at the 98th-percentile
depending on different mounting methods and
worldwide locations.
 Please consult the Canadian Solar technical support
department for more information on the use of
modules in special climates, such as an altitude greater
than 2000m.
Do not install modules near open flames
or flammable materials.
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) or
sulfur (i.e. sulfur sources, volcanoes) incurs the risk of
module corrosion.
 Do not expose modules and their connectors to any
unauthorized chemical substances (e.g. oil, lubricant,
pesticide, etc.), as modules may incur damages.
 Canadian Solar modules have passed salt mist
corrosion resistance test according to IEC 61701, but
the corrosion may still occur on where the modules
frame is connected to the bracket or where the
grounding is connected. Should the installation location
be near the ocean, Canadian Solar recommends
stainless steel or aluminum materials be used in the
areas with direct contact with the PV modules, and the
connection point should be protected with anti-
corrosion measures. For more information, please
contact Canadian Solar technical support team.
INSTALLATION REQUIREMENTS
 Ensure that the module meets the general technical
system requirements.
 Ensure that other systems components do not damage
the module mechanically or electrically.
 Modules can be wired in series to increase voltage or in
parallel to increase current. To connect modules in
series, connect the cables from the positive terminal of
one module to the negative terminal of the next module.
To connect in parallel, connect the cables from the
positive terminal of one module to the positive terminal
on the next module.
 The quantity of bypass diodes in the module’s junction
box provided may vary depending on the model series.
 Only connect the quantity of modules that corresponds
to the voltage specifications of the inverters used in the
system. In addition, modules must not be connected
together to create a voltage higher than the maximum
permitted system voltage stated on the module
nameplate, even under the worst local temperature
conditions (see Table 1 for the correction coefficients
that apply to open-circuit voltage).
 A maximum of two strings can be connected in parallel
without using an over-current protection device (fuses,
etc.) incorporated in series within each string. Three or
more strings can be connected in parallel if an
appropriate and certified over-current protection
device is installed in series within each string. And it
shall be ensured in the PV system design that the
reverse current of any particular string is lower than the
module maximum fuse rating at any circumstances.
 Only modules with similar electrical parameters should
be connected in the same string to avoid or minimize

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mismatch effects in arrays.
 To minimize risk in the event of an indirect lightning
strike, avoid forming loops with the wiring when
designing the system.
 The recommended maximum series fuse rating is
stated in a table in the Annex A.
 Modules should be safely fixed to bear all expected
loads, including wind and snow loads.
 A minimum clearance of 6.5 mm (0.25 in) between
modules is required to allow for thermal expansion of
the frames.
 The small drainage holes on the underside of the
module must not be blocked.
OPTIMUM ORIENTATION AND TILT
 To maximize the annual yield, please calculate the
optimum orientation and tilt for PV modules in that
specific installation site. The highest yields are achieved
when sunlight shines perpendicularly onto the PV
modules.
AVOID SHADING
Modules shall not be permanently shaded (including
partial shading, spot shading, even shading or uneven
shading) under any circumstance. Permanent shading
includes shading of the same cell, cell row, or module
portion for extended and repeated periods of time (e.g.
more than 200 daylight hours over the warrantied
service lifetime). Power dissipated in fully or partially
shaded cells will result in power loss, reduced yield and
can cause localized overheating, which in turn may
negatively impact the module service lifetime.
Permanent shading may cause accelerated ageing of
the encapsulation material and place thermal stress on
the bypass diodes. This would void the module’s
warranty unless properly mitigated through the use of
Module Level Power Electronic (MLPE) devices.
 Regular maintenance is required to keep modules clean.
Particular measures should be taken to avoid
permanent shading from dirt or debris (e.g., plants,
bird droppings, etc).
 Do not install modules directly behind any object (e.g.,
tree, antenna, etc) to prevent occurrence of permanent
shading.
 Even temporary partial shading will reduce the energy
yield A module can be considered to be unshaded if its
entire surface is free from shading all year round,
including on the shortest day of the year.
RELIABLE VENTILATION
 Sufficient clearance (at least 102 mm (4.02 in)) between
the module frame and the mounting surface is required
to allow cooling air to circulate around the back of the
module. This also allows condensation or moisture to
dissipate.

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 According to UL 61730, any other specific clearance
required for maintaining a system fire rating should
prevail. Detailed clearance requirements pertaining to
system fire ratings must be provided by your racking
supplier.
5.1 MODULE WIRING
CORRECT WIRING SCHEME
 Cable management scheme should be reviewed and
approved by the EPC contractor; in particular required
cable lengths should be cross-checked considering the
specificities of the tracker structure like bearing house
gaps. If longer cable or additional jumper cables are
requested, please contact Canadian Solar’s sales
representative in advance.
 Ensure that the wiring is correct before starting up the
system. If the measured open circuit voltage (Voc) and
short-circuit current (Isc) differ from the specifications,
this indicates that there is a wiring fault.
 When modules have been installed but the system has
not been connected to the grid yet, each module string
should be kept under open-circuit conditions and
proper actions should be taken to avoid dust and
moisture penetration inside the connectors.
 In case where a cable connection method not included
in the below table is used, please confirm the suitable
cable length with Canadian Solar’s sales representative.
 For different Canadian Solar module types, Canadian
Solar offers optional cable lengths to match various
system configurations.
 Recommended system cable schemes are shown in
table 2 & 3 below:
Table 2: System Cable Scheme for
CS3U/CS3K/CS3W/CS3L/CS3LA/CS3LB/CS3Y/CS3N/CS3SA/CS6W/CS6R/CS7N/CS7L modules
Module types Standard cables
CS3U-P,
CS3K-P,
CS3W-P, CS3W-MS,
CS3L-P, CS3L-MS,
CS3LA-MS, CS3LB-MS
CS3Y-P, CS3Y-MS,
CS3N-MS,
CS3SA-MS,
CS6W-MS,
CS6R-MS,
CS7N-MS,
CS7L-MS,
CS7L-MS-R
Portrait two rows installation
Note: Adjacent two modules (up and down) need to be rotated 180 degrees
Portrait one row installation
Landscape installation
Note: Adjacent two modules (left to right) need to be rotated 180 degrees

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Table 3: System Cable Scheme for CS1V/CS1VL/CS1H/CS1HA/CS1U/CS1Y modules
Module types Standard cables
CS1V-MS,
CS1VL-MS,
CS1H-MS,
CS1HA-MS,
CS1U-MS,
CS1Y-MS
Portrait two rows installation
Note: Adjacent two modules (left to right) need to be rotated 180 degrees
Portrait one row installation
Note: Adjacent two modules (left to right) need to be rotated 180 degrees
Landscape installation
Note: Adjacent two modules (up and down) need to be rotated 180 degrees
Leapfrog
The maximum distance between two adjacent module frames should be within 50 mm (1.96 in) for the side with mounting
clamps, and 25 mm (0.98 in) for the side without mounting clamps, in order to meet the system cable scheme.

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CORRECT CONNECTION OF CONNECTORS
 Make sure that all connections are safe and properly
mated. PV connectors should not be subject to stress
from the exterior. Connectors should only be used to
connect the circuit. They should never be used to turn
the circuit on and off.
 Connectors are not waterproof when unmated. When
installing modules, connector should be connected to
each other as soon as possible or appropriate measures
(like using connector endcaps) should be taken to avoid
moisture and dust penetrating into the connector.
 Do not connect different connectors (manufacturer
and type) together.
 Do not clean or precondition the connectors using
lubricants or any unauthorized chemical substances.
USE OF SUITABLE MATERIALS
 Only use dedicated solar cable and suitable connectors
(wiring should be sheathed in a sunlight-resistant
conduit or, if exposed, should itself be sunlight-
resistant) that meet local fire, building and electrical
regulations. Please ensure that all wiring is in perfect
electrical and mechanical condition.
 Installers may only use single-conductor cable listed
and labeled as or PV wire which is 90°C wet rated in
North America, and single conductor cable with a cross
section area of at least 4 mm² (12 AWG), 90°C wet rated
in other areas (i.e. IEC 62930 approved), with proper
insulation which is able to withstand the maximum
possible system open-circuit voltage. For CS7N-MS,
CS7L-MS and CS7L-MS-R, Canadian Solar recommends
the use of a copper wire of at least 6 mm² (10AWG)
section.
 Only copper conductor material should be used. Select
a suitable conductor gauge to minimize voltage drop
and ensure that the conductor ampacity complies with
local regulations (i.e. NEC 690.8(D)).
CABLE AND CONNECTOR PROTECTION
 Secure the cables to the mounting system using UV-
resistant cable ties. Protect exposed cables from
damage by taking appropriate precautions (e.g. placing
them inside a metallic raceway like EMT conduit). Avoid
exposure to direct sunlight.
 A minimum bending radius of 60 mm (2.36 in) is
required when securing the junction box cables to the
racking system.
 Protect exposed connectors from weathering damage
by taking appropriate precautions. Avoid exposure to
direct sunlight.
 Do not place connectors in locations where water could
easily accumulate.
5.2 GROUNDING
 For grounding requirements in North America, a
module with exposed conductive parts is considered to
comply with UL 61730 only when it is electrically
grounded in accordance with both the instructions
presented below and the requirements of the National
Electrical Code. Any grounding means used with
Canadian Solar modules should be NRTL certified to UL
467 and UL 2703 standards. Please consult our technical
service team for the formal approval process.
 For grounding requirements in other areas, although
the modules are certified to Safety Class II, we
recommend them to be grounded and that module
installation should comply with all applicable local
electrical codes and regulations. Minimum size of
equipment grounding conductors for ground raceway
and equipment from NEC 690.8(D) should be
considered. Grounding connections should be installed
by a qualified electrician. Connect module frames
together using adequate grounding cables: the use of
4-14 mm² (AWG 6-12) copper wire is recommended.
Holes provided for this purpose are identified with a
grounding symbol (IEC 61730-1). All conductive
connection junctions must be firmly fixed.
 Do not drill any extra ground holes for convenience as
this will void the modules warranty.
 All bolts, nuts, flat washers, lock washers and other
relevant hardware should be made of stainless steel,
unless otherwise specified.
 Canadian Solar does not provide grounding hardware.

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 The grounding method described below is
recommended by Canadian Solar.
GROUNDING METHOD: BOLT + TOOTHED NUT + CUP WASHER.
 A grounding kit containing an M5 (3/16") SS cap bolt, an
M5 (3/16") SS flat washer, an M5 (3/16") SS cup washer,
and an M5 (3/16") SS nut (with teeth) is used to attach
copper grounding wire to a pre-drilled grounding hole
on the frame (see image above).
 Place the wire between the flat washer and the cup
washer. Ensure that the cup washer is positioned
between the frame and the wire with the concave side
up to prevent galvanic corrosion. Tighten the bolt
securely using the SS toothed nut. A wrench may be
used to do this. The tightening torque is 3-7 Nm (2.2-5.2
ft-lbs).
6.0 MOUNTING INSTRUCTIONS
The applicable regulations pertaining to work
safety, accident prevention and securing the
construction site must be observed. Workers
and third party personnel shall wear or install fall arrest
equipment. Any third party need to be protected against
injuries and damages.
 The mounting design must be certified by a registered
professional engineer. The mounting design and
procedures must comply with all applicable local codes
and requirements from all relevant authorities.
 The module is considered to be in compliance with UL
61730 and IEC 61215 only when the module is mounted
in the manner specified by the mounting instructions
included in this installation manual.
 The system designer and installer are responsible for
load calculations and for proper design of support
structure.
 Any module without a frame (laminate) shall not be
considered to comply with the requirements of UL
61730 unless the module is mounted 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 61730.
 Canadian Solar does not provide mounting hardware.
 Standard modules can be mounted onto a support
structure using one of several approved methods as
described below. For information about other
installation methods, please contact your local
representative. Failure to use a recognized installation
method will void the Canadian Solar warranty.
 Use appropriate corrosion-proof fastening materials.
All mounting hardware (bolts, spring washers, flat
washers, nuts) should be hot dip galvanized or stainless
steel.
 Use a torque wrench for installation.
 Do not drill additional holes or modify the module
frame. Doing so will void the warranty.
 Standard modules can be installed in either landscape
or portrait orientations. Refer to the detailed
instructions for further guidance. Please note that in
areas with heavy snowfall (> 2400 Pa) further
countermeasures such the use of additional support
bars should be considered to avoid snow loads
damaging the lowest row of modules.
 In cases where an additional support bar is
To fix the wire between the
flat washer and cup washer,
place the cup washer
(concave side up) between
the frame and the wire.
Then tighten the bolt
using the toothed nut.

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recommended to improve both mechanical stability
and long-term module performance, we recommend
selecting a sufficiently resistant material. Canadian
Solar recommends bars with a minimum thickness of
50 mm (1.97 in). The support bar centerline should be
positioned within 100 mm (3.94 in) of the side frame
centerline (slight shifts may be necessary to access
module grounding holes).
 The loads described in this manual correspond to test
loads. For installations complying with IEC 61215-2:2016
and UL 61730, a safety factor of 1.5 should be applied
for calculating the equivalent maximum authorized
design loads. Project design loads depend on
construction, applicable standards, location and local
climate. Determination of the design loads is the
responsibility of the racking suppliers and/or
professional engineers. For detailed information,
please follow local structural code or contact your
professional structural engineer.
6.1 MOUNTING METHOD: BOLTING
 The mechanical load test with these mounting methods
were performed according to IEC 61215.
 Modules should be bolted to supporting structures
through the mounting holes in the rear frame flanges
only.
 Each module must be securely fastened at a minimum
of 4 points on two opposite sides.
 M8 X 1.25 - Grade 8.8 (5/16”-18 Grade B7) galvanized or
A2-70 stainless steel bolt and nut should be used.
 The yield strength of bolt and nut should not be less
than 450 MPa.
 Tightening torques should be 16~20 Nm (11.8~14.75 ft-
lbs) for M8 (5/16”-18) coarse thread bolts, depending
on bolt class.
 In areas with heavy wind loads, additional mounting
points should be used. The system designer and the
installer are responsible for correctly calculating the
loads and ensuring that the supporting structure meets
all the applicable requirements.
Mounting method: Bolting
 Modules should be bolted at the following hole
locations depending on the configuration and loads:

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Table 5: Approved bolting methods
Inner four holes installation
method A
Middle four holes installation
method A
Outer four holes installation
method A
Inner four holes installation
method B
Middle four holes installation
method B
Installation
Method
Module
Types
Inner four
holes
installation
method A
Inner four
holes
installation
method B
Middle four
holes
installation
method A
Middle four
holes
installation
method B
Outer four
holes
installation
method A
CS1V/CS1VL/CS3K/
CS1HA +5400Pa/-2400Pa
+4000Pa/-2400Pa -- -- --
CS3U -- -- +5400Pa/-2400Pa +5400Pa/-2400Pa --
CS3W/CS1U -- -- +5400Pa/-2400Pa +3600Pa/-2400Pa --
CS3N (F30 Frame) +5400Pa/-2400Pa +3600Pa/-2400Pa -- -- --
CS3N (F23 Frame) +5400Pa/-4000Pa +5400Pa/-4000Pa -- -- --
CS3L/CS3LA/CS3LB
/CS1H +5400Pa/-2400Pa
-- -- -- --
CS6R +5400Pa/-2400Pa +5400Pa/-2400Pa
CS1Y +5400Pa/-2400Pa +5400Pa/-2400Pa -- -- --
CS3Y/CS3SA/CS6W/
CS7L/CS7N -- -- -- -- +5400Pa/-2400Pa
Note: The bolting installation method is based on the experimental results, “--” means not tested.

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6.2 MOUNTING METHOD: CLAMPING
 The mechanical load test with these mounting methods
were performed according to IEC 61215.
 Clamping methods will vary and are dependent on the
mounting structures. Please follow the mounting
guidelines recommended by the mounting system
supplier.
 Each module must be securely fastened at a minimum
of four points on two opposite sides. The clamps should
be positioned symmetrically. The clamps should be
positioned according to the authorized position ranges.
 Install and tighten the module clamps to the mounting
rails using the torque stated by the mounting hardware
manufacturer. M8 X 1.25 (5/16”) bolt and nut are used
for this clamping method.
 Tightening torques should be within 16~20 Nm
(11.8~14.75 ft-lbs) for M8 (5/16”) coarse thread bolts,
depending on the bolt class. For the bolt grade, the
technical guideline from the fastener suppliers should
be followed. Different recommendations from specific
clamping hardware suppliers should prevail.
 The system designer and installer are responsible for
load calculations and for proper design of support
structure.
 Canadian Solar’s warranty may be void in cases where
improper clamps or unsuitable installation methods are
found. When installing inter-modules or end-type
clamps, please take the following measures into
account:
1. Do not bend the module frame.
2. Do not touch or cast shadows on the front glass.
3. Do not damage the surface of the frame (to the
exception of the clamps with bonding pins).
4. Ensure the clamps overlap the module frame by at
least 10 mm (0.4 in) for CS6W, CS7N and CS7L, 5mm
(0.2in) for the rest module types.
5. Overlap in length by at least
a) 80 mm (3.15 in) when uplift load > 2400 Pa is
required.
b) 40 mm (1.57 in) when uplift load ≤ 2400 Pa is
required.
6. Ensure the clamp thickness is at least 3 mm (0.12 in).
 Clamp material should be anodized aluminum alloy or
stainless steel.
 Clamp position is of crucial importance for the reliability
of the installation. The clamp centerlines must only be
positioned within the ranges indicated in table below,
depending on the configuration and load. For
configurations where the mounting rails run parallel to
the frame, precautions should be taken to ensure the
bottom flange of the module frame overlaps the rail by
15 mm (0.59 in) or more.

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6.2.1 Four clamps on long side of frame and rails perpendicularly to the long side frame
Module Types
Max Mechanical Load (Pa)
+2000/
-2000
+2400/
-2400
+3600/
-2400
+5400/
-2400
+5400/
-3600
+7000/
-5400
A1 Range (mm)
CS1H 0-219 220-440 / / 270-330 /
CS1VL/CS1HA 0-219 220-440 / 270-330 / /
CS1V 0-239 331-550 / 240-330 / /
CS3K 0-239 331-550 / / 240-330 /
CS3U/CS3W / 340-550 / / 410-490 /
CS1U / 340-550 / 410-490 / /
CS1Y / / 300-600 / 350-550 400-500
CS3L/CS3LA/CS3LB 0-240 331-550 / / 240-330 /
CS3N （F30 Frame） / 300-600 / / 400-500 /
CS3N （F23 Frame） / / 200-650 / 300-600 450-550
CS3Y/CS6W/CS7L/CS7N / 300-600 / 400-500 / /
CS3SA / / 300-600 400-500 / /
CS6R 0-100 100-600 200-500 300-400 / /

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6.2.2 Four clamps on short side of frame and rails perpendicular to the long side frame.
Module Types
A Range (mm)
0-200 200-250
Max Mechanical Load (Pa)
CS3U +1200/-1200 +1400/-1400
CS3W +1000/-1000 +1200/-1200
CS3L +2000/-2000 +2200/-2200
CS1Y +1600/-1600 +1800/-1800
CS3N （F30 Frame） +2000/-2000 +2200/-2200
CS3N （F23 Frame） +2200/-2000 +2400/-2200
CS6R +2200/-2200 +2400/-2400
6.2.3 Four clamps on long side of frame and rails parallel to the long side frame.
Module Types
Max Mechanical Load (Pa)
+4000/-2400 +5400/-2400
A1 Range (mm)
CS3U / 410-490
CS3K/CS1V 240-330 /
CS1VL/CS1HA 270-330 /
CS3N （F30 Frame） 400-500 /
CS3N （F23 Frame） 200-600 450-550

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6.2.4 Two clamps on the long side and two clamps on the short side of frame. Rails run perpendicular to the long
side frame.
Module Types
Max Mechanical Load (Pa)
+2400/-2400
A1 Range (mm) A2 Range (mm)
CS3U 300-550 200-250
CS3K 100-550 200-250
CS3W 600-800 20-250
CS3L 400-600 20-250
CS3N （F23 Frame） 400-600 200-250
6.2.5 Four clamps on short side of frame and rails parallel to the long side frame.
`
Module Types
A2 Range (mm)
0-200 170-210 200-250 200-300 230-250
Max Mechanical Load (Pa)
CS1VL/CS1HA / / +2400/-2400 / /
CS1V / +2400/-2400 / / /
CS3K / / +2000/-2000 / /
CS3L / / / / +2200/-2200
CS1Y +1600/-1600 / +1800/-1800 / /
CS3N （F30 Frame） +2000/-2000 / +2200/-2200 / /
CS3N （F23 Frame） +2200/-2000 / / +5400/-2400 /

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6.2.6 Four clamp mounting on short side of frame.
Module Types
Max Mechanical Load (Pa)
+1000/-1000 +1200/-1200 +2000/-2000 +2200/-2200 +2200/-2000 +2400/-2400
A2 Range (mm)
CS1VL/CS1HA / / / / / 0-250
CS1V / / 0-210 / / /
CS3K / / 0-200 200-250 / /
CS3L / / 0-200 200-250 / /
CS3W 0-200 200-250 / / / /
CS3N （F23 Frame） / / / / 0-200 /
CS3N （F30 Frame） / / 0-200 200-250 / /
CS6R / / / 0-200 / /
6.2.7 Four clamp mounting on short side of frame, and an additional support bar placed below the center of the
module.
Module Types
Max Mechanical Load (Pa)
+4000/-4000 +5400/-2400
A2 Range (mm)
CS1VL/CS1HA/CS3K/CS3U / 200-250
CS1V / 170-210
CS3N （F30 Frame） 0-200 /

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6.2.8 Six clamps on long side of frame and rails perpendicularly to the long side frame
Module Types
Max Mechanical Load (Pa)
+5400/-2400 +5400/-3600 +6000/-3600 +6000/-4000 +7500/-5400 +8100/-6000
A3 & A5 Range (mm)
CS1H 80-380 / / 0-250 / /
CS1U 250-350 / / / / /
CS3L / 140-440 / / / /
CS3K / / / 80-380 / /
CS3N（F23
Frame）
/ / / / 300-550 350-450
CS6R / / 80-380 / / /
6.2.9 Rail-less clamping
Landscape installation, clamping on long side frame
Modyle Type Max Span Max Cantilever length Downforce Uplift
CS3K/CS1H
72 inches (1.83 m) 24 inches (0.61 m) 2200 Pa 1400 Pa
64 inches (1.63 m) 21.3 inches (0.54 m) 2400 Pa 1400 Pa
48 inches (1.22 m) 16 inches (0.41 m) 3400 Pa 1800 Pa
32 inches (0.81 m) 10.7 inches (0.27 m) 4800 Pa 2400 Pa
CS1Y
72 inches (1.83 m) 24 inches (0.61 m) 2650 Pa 2400 Pa
64 inches (1.63 m) 21.3 inches (0.54 m) 2800 Pa 2400 Pa
48 inches (1.22 m) 16 inches (0.41 m) 3850 Pa 3600 Pa