PHOTOWATT PW60HT-C-XF, Installation Manual

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D69-P06-01 GB R6 01/07/2020 www.photowatt.com
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All the basic requirements of the main installation
manual should apply to the alternative mounting
methods, unless otherwise specified.
The loads described in this manual corresponds
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, ap-
plicable standards, location and local climate. De-
termination of the design loads is the responsibility
of the racking suppliers or professional engineers.
For detailed information, please follow local struc-
tural code or contact your professional structural
engineer.
MOUNTING METHOD A : CLAMPING
•
The mounting method has been qualified by
EDF ENR PWT as well as certified by VDE and
CSA.
•
Top or bottom clamping methods will vary and
are dependent on the mounting structures.
Please follow the mounting guidelines recom-
mended by the mounting system supplier.
•
Each module must be securely fastened at a mi-
nimum of four points on two opposite sides. The
clamps should be positioned symmetrically. The
clamps should be positioned according to the
authorized position ranges defined in table A.
•
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 17~23 Nm
(12.5~17.0 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 recom-
mendations from specific clamping hardware
suppliers should prevail.
•
The system designer and installer are res-
ponsible for load calculations and for proper de-
sign of support structure.
•
EDF ENR PWT's warranty may be void in cases
where improper clamps or unsuitable instal-
lation methods are found. When installing in-
ter-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 5 mm (0.2 in).
5. Overlap in length by at least
a) 80 mm (3.15 in) when 2400 Pa < uplift load ≤
4000 Pa is required.
b) 40 mm (1.57 in) when uplift load ≤ 2400 Pa
is required.
6. Ensure the clamp’s thickness is at least 3 mm
(0.12 in).
ANNEX A :
ALTERNATIVE MOUNTING METHODS
•
Clamp material should be anodized aluminum
alloy or stainless steel.
•
Clamp positions are of crucial importance for
the reliability of the installation. The clamp
centerlines must only be positioned within the
ranges indicated in table A, 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 mo-
dule frame overlaps the rail by 15 mm (0.59 in)
or more.
Min. 3 mm thickness
Min. 5 mm overlap
Min. overlap
length 40 mm
Clamp
Module
frame
rail
Min. 15 mm overlap
width