Rev IM/GN-CM-EN/1.0 Copyright© October, 2020 Canadian Solar Inc. 9
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.
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 Inc. does not provide mounting hardware.
Classic modules can be mounted onto a support structure using one of several approved methods. One of
such methods is described below. For details of other mounting methods and the methods recommended
by Canadian Solar Inc. for special module ranges, please refer to the Annex A (Alternative Mounting
Methods) of this installation manual.
For information about other installation methods, please contact
your local representative. Failure to use a recognized installation method will void the Canadian Solar Inc.
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.
Classic 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 recommended to improve both mechanical stability and
long-term module performance, we recommend selecting a sufficiently resistant material. Canadian Solar
Inc. 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
This mounting method has been qualified by Canadian Solar Inc., as well as certified by VDE and CSA.
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 450MPa.
Tightening torques should be 17~23 Nm (12.5~17.0 ft-lbs) respectively for M8 (5/16”-18) coarse thread
