Installation manual ValkBox3
Safety instructions
The ValkBox3 mounting system is installed on roofs and will be exposed to wind and
snow. The building in question will be subject to a greater load as a result of the PV
system. A design calculation must be used to establish whether or not the building in
question will be able to withstand the extra load. Where necessary, modications will
then need to be made.
When installing the ValkBox3 mounting system, the instructions provided in this
user manual must be observed at all times. Read this manual carefully and keep it in
a safe place. Also follow the instructions stated in the manuals for the other system
components that form part of the overall PV system. All current structural, safety and
building regulations must be observed. Van der Valk Solar Systems B.V. will never be
liable for any direct and/or indirect intangible or consequential loss ensuing from or
connected to the failure to observe the instructions provided in this manual.
Starting points
The following starting points apply for the ValkBox3 mounting system:
The standards applied (if applicable for specic solar mounting system)
NEN-EN 1990: Eurocode – Basis of structural design
NEN-EN 1991-1-4: Eurocode 1: Actions on structures - Part 1-4: General actions –
Wind actions
NEN7250: Solar energy systems – Integration in roofs and facades –
Constructional aspects
BS EN 1991-1-4: British Standard
Type of solar panel
The ValkBox3 mounting system is a universal mounting system for solar panels. The
following starting points apply:
Design panels: Standard solar panels with an aluminium frame, with
mounting holes for M6 bolts.
Length panels: Up to max 2280 mm
Width panels: 926 - 1150 mm
Type of roofs
The ValkBox3 mounting system can be used to mount panels on at roofs. The following
starting points apply:
Type of roof covering: bitumen, EPDM and concrete
Before installing the ValkBox3 mounting system, make sure that you carefully
sweep the roof area. The ValkBox3 mounting system (see later in this manual)
may only be placed on at roofs or ground surface up to a maximum pitch of 5
degrees. The system can not be placed on steeper roofs of surfaces.
Ballast
The ValkBox3 mounting system needs to be supported by ballast, to make sure that
the system is unable to move, lift or tip over. This manual indicates how much ballast
should be placed on the system based on maximum panel dimensions, wind area and
roof height. The number of tiles specied (30 x 30 x 4.5 cm) per position will be vital to
ensure that the mounting system can be used safely.
To achieve this, follow the required ballast instructions later in this manual.
Position
Restrictions also apply for the position of the system on a roof. The system must be
installed at a certain distance from the edge of the roof, in the so called “middle zone”.
According to the Eurocode for wind loads EN1991-1-4, the edge zone of the roof
is 1/5th of the roof height. So for example: if the roof height is 6 meters, a free
edge zone of 1,2 meters must be maintained.
