Collector Fixing; Sloped Roof Installation; Flat Roof Installation; Wall Installation - Viessmann VITOSOL 200-FM SV2F Design Manual

Design Information

Collector Fixing

Sloped Roof Installation

Flat Roof Installation

During installation of the collectors (freestanding or lying
flat), the minimum clearances from the edge of the roof in
accordance with the standard must be observed (see page
42). If the roof size necessitates a split array, ensure that
collector of the same size are created. The collectors can
be secured on any solid substructure or on concrete slabs.

Wall Installation

Legend
A Summer Sun Angle
B Spring/Fall Sun Angle
C Winter Sun Angle
44
Due to the many varieties available, solar collectors can
be installed in almost all types of building, both in new
build and modernisation projects. As required, they can be
installed on pitched roofs, flat roofs and on walls, as well
as freestanding on the ground.
Viessmann offers universal fixing systems to simplify
installation. These fixing systems are suitable for virtually
any form of roof and roof cover as well as for installation
on flat roofs and walls. For more detail, refer to the
installation manual for the individual collector model.
In sloped roof systems, the collectors and the roof frame
are connected. At each fixing point, a roof bracket and
rafter anchor penetrates the water-carrying level below
the collector. This requires a completely rain-proof and
secure anchorage. The fixing points and therefore also
any possible defects will no longer be visible post
installation. Maintain the minimum clearances from the
roof edge in accordance with local codes.
Note: When installing collectors on concrete slabs,
secure them with additional ballast to prevent against
slippage, tipping and lifting. Slippage is the movement
of the collectors on the roof surface due to wind,
because of insufficient friction between the roof
surface and the collector fixing system. Collectors can
be secured against tipping and lifting by using guy
ropes or by being fixed to other roof structures.
This is a unique option for installing solar collectors as it
is possible to have the collectors mounted to the wall.
This installation option can be used to create an awning
system or to have the collector array become part of the
building architecture.
This mounting option has many benefits such as
increased installation angles (e.g. 60° - 80°) which can
reduce overheating during the summer. This mounting
option is also referred to as passive solar shading.
Passive solar shading is a good way of reducing solar
exposure in the summer months while increasing the solar
capturing potential during the winter heating season.
When mounting the collectors for passive solar shaded
installations, it is very important to accurately calculate
the distance between the upper and lower course of
collectors. If the vertical distance between the stacked
arrays is either to small or to great to could affect the
overall seasonal output of the solar system.
Solar System Design Guide