Flat Roof Installation; Fixing Information; Minimum Clearance Between Several Rows Of Collectors - Wolf CFK-1 Installation, Operating And Maintenance Instructions

Fixing information

Wind energy
Ballast (weights)
Minimum clearance between
several rows of collectors
(angle of shade = 17°)
Minimum clearance and angle for the supports when installing the collector on end (example: Würzburg)
β
Angle of inclination
30
45
Selection of hole
size
36

16. Flat roof installation

Unsecured support frames can be pushed over and damaged by the force of
the wind. Therefore secure the collectors on the roof. First check the static
suitability of the sub-structure and the permissible area loading for the roof skin
(if necessary call on the services of a structural engineer).
Weights can be used as ballast to protect the roof skin from damage
(drilling).
Height of Area exposed to
building
Wind
0 – 8 m
8 – 20 m
> 20 m
For example, concrete ties can be placed on the flat roof and the support frames
can be affixed to them. The required weight of the concrete ties depends on
the wind energy that increases with the height of the building.
Also, the wind energy at the roof edge is stronger than at the centre of the roof.
Consequently, the distance from the collectors to the edge of the building should
be greater than 1 m, not least to make the installation easier.
Should this weight exceed the permissible roof loading, secure the collectors
with at least 100 kg per collector against slippage and apply a guy wire of at
least 4 mm Ø as security against tipping over.
As an alternative to applying weights, a (steel) substructure can also be used. For
this, at least 2 rows are interconnected. This creates favourable lever conditions
that prevent the collector weight tipping over. In addition the substructure creates
the benefit that uneven surfaces can be levelled out.
"h" (cm)
Hole dimension
117 ( )
available
- ( )
available
Fit the diagonal leg to the respective hole in the vertical
45°
leg, subject to the required angle.
Mark the vertical leg above the diagonal leg and trim
30°
to size (see diagram).
20°
Wind energy Fw
wind
2.30 m 2030 N
2
2.30 m 2800 N
2
Requires an individual calculation to
2.30 m
2
"d1" (cm)
Hole dimension
333
471
Required ballast
per collector
175 kg
295 kg
DIN 1055-4
"d" (cm)
Clearance dimension
507
613
3062815_0110