© Safety and Installation Guide – Edition Dec. 2010 Scheuten Solar USA, Inc.
All rights reserved. Specifications in this manual are subject to change without notice.
2 of 5
2.1 Bolting Mounting Method
The factory mounting holes found in the long frame segments can be
used (
see
Figure 1-
Mounting Specifications
) to secure the modules to
suitable support structure. The frame must be secured at a minimum of
four points when bolting. The modules are bolted from the backside as
shown in
Figure 2
. Scheuten recommends using four (4) M6 or ¼ in.
stainless steel bolt assemblies to secure each module. Each assembly
should consist of a bolt, washer, lock washer and nut. The ¼ in. (M6)
bolting assembly should be secured with a torque wrench to a
tightening torque of 9 ft-lbf (12 Nm).
Figure 2
– Bolting
1.-
Bolt
3.-
Lock Washer
2.-
Nut
4.-
Washer
Table 1-
Recommended Bolting Components
Component
Description
Distributor
Part Number
Bolt
¼” -20, SS
McMaster-Carr
92240A540
Nut
¼” -20, SS
McMaster-Carr
91847A029
Washer
ID .266”, OD .563”,SS
McMaster-Carr
90313A204
Lock Washer
¼” , SS
McMaster-Carr
92146A029
See: www.mcmaster.com
2.2 Mounting Using Topside Module Clamps
Clamps can also be used to secure modules to a suitable support
structure. When using clamps, they can be attached at the position
where the frame holes are found. The dimensions of the clamp
surfaces should be sized adequately. A surface area of at least
500 mm² (0.775 in
2
) is recommended. Module clamps and associated
hardware assemblies must be compatible with other materials to avoid
corrosion due to the use of dissimilar metals.
Scheuten Solar recommends installing support rails at a distance 32 in.
on-center so that modules may be clamped to support rails at
approximately 16 in. from module edge. This clamping location
coincides with the approximate location of the module mounting holes
shown in
Figure 1.
Modules are to be secured to the support rails
using topside module clamps which do not shade the module. Clamps
should be secured to a tightening torque of 20 ft-lbf. (28 Nm) for a 5/16
in. stainless steel bolt. The support structure and clamps must have a
design load of at least 75 psf (3600 Pa).
The loads detailed in this guide apply to the mounting methods
specified above. In appendix 2 other regular mounting methods are
described with different load regimes. For permission to mount
Scheuten modules using specialized PV mounting systems other than
those outlined above or in appendix 2, please contact Scheuten Solar.
Failure to do so will void the warranty and panel certification.
2.3 Additional information
Scheuten PV modules may not be used as overhead glazing. In case
of rooftop systems, fire protection must be compatible with the class C
fire rating of the modules. Forces impacting the frame profile at the
points of contact must not result in any deformation of the frame.
Crowding between frame and glass should be avoided at all costs. If
installed on an incline, the modules should be secured from sliding at
the eaves. Drainage openings must not be covered up. No additional
holes should be drilled into the unit for mounting purposes, for potential
equalization or for any other purposes. Any changes of this kind will
void the warranty.
3.0 Electrical Installation
Danger!
Risk of death or serious
injury from electric shock! Do not
connect or disconnect modules
under load.
Scheuten PV modules may be used in systems that are accessible
without restrictions if installed in accordance with instructions
(application class A, IEC 61730 or safety class II, IEC 61140).
Additionally, installation shall be in accordance with CSA C22.1, Safety
Standard for Electrical Installations, Canadian Electrical Code, Part 1.
Despite protection against accidental contact, under unfavorable
conditions if several modules are connected in series, hazardous
voltage of several hundred volts may be present during installation. For
this reason, work on the modules may only be performed by qualified
skilled professionals. The manufacturer’s instructions of the other
components being used, especially those of the inverter, are to be
observed.
Danger!
Risk of death or serious
injury from electric arcs!
Exposed to light under load and especially in the event of a short
circuit, high levels of direct current can result in dangerous electric
arcs, if, for example, the connection between two PV modules is
separated.
The unit may only be connected to the main power supply by a
licensed skilled professional. Work to be performed is to be
coordinated with the electricity network provider. The photovoltaic
system must be approved by an electrician who is responsible to the
operator and the local electricity company for assuring installation was
carried out correctly.
3.1 Junction box
The junction box is of protection class IP 65. Observe the details listed
on the cover. The box cover may only be opened in exceptional cases
and exchange of parts in and on the junction box is only allowed by a
skilled electrician authorized by Scheuten Solar.
Within the junction box are the bypass diodes, Diotec type SB1240
1
.
3.2 Connection cables and plug-in connectors
The integrated connection cables are dual insulated and UV resistant.
The wire diameter of the connection cables is 6 mm² (0.0093 in
2
). For
wiring, the connection cables have pre-assembled plug-in connectors
with reverse polarity protection. Because of its safe design features,
accidental contact with current-carrying cables can be ruled out entirely
when used correctly. When connected, protection class IP 65 applies.
The connectors may only be plugged in when dry. Special attention
should be given to assure a seamless connection.
In general, the connection cable should not be subject to any tensile
loads. Wires should be attached to the mounting system using UV
resistant cable ties to avoid chafe marks from movements or tensile
loads.
3.3. Module Connection
Modules may be connected in series (voltage additive) and/or in
parallel (current additive) to produce the appropriate electrical output.
PV module interconnections should be 90ºC wet-rated conductors. An
allowable wire type is using USE-2 or PV single-wire conductor cable
for exposed applications. For field connections use insulated minimum
no.12 AWG copper wires rated for a minimum of 90ºC.
1
www.diotec.com/pdf/sb1220.pdf
