Mounting Method: Bolting |11 - Canadian Solar Standard Series Installation Manual

· 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 1703, 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 450 MPa.
· Tightening torques should be 17~23 Nm (12.5~17.0
ft-lbs) respectively 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
Bolt Washer
Spring
Washer Nut Washer
· Modules should be bolted at the following hole
locations depending on the configuration and
loads:
| 11
Frame
Rail
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