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Installation on flat roofs
1. Determine the angle of the sun β.
This should be chosen so that the
midday sun on 21.12. falls on the
second row of collectors without
being obstructed by shadows.
In Germany this angle (subject to
latitude) lies between 12° (Flens-
burg) and 20° (Freiburg).
Solar angle:
90 ° − 23.5°− latitude
(23.5 ° should be accepted as con-
stant)
90 ° − 23.5 °− 50° = 16.5°
z Collector row distance
h Collector height
Fitting the support frame
Turn T-slot bolt 90° for all installation steps.
Position the collector array as far south as possible; longitudinal tube axis
aligned east-west.
(cont.)
2. Calculating dimension. z:
h = 2020 mm
α = 45°
β = 16.5°
α Collector angle of inclination
β Solar angle
19
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