10.5 Above roof installation for sheet metal roofs
General information
Observe the information on securing collectors on page 97.
The fixing system comprises:
■ Mounting bracket
■ Mounting rails
■ Clamping brackets
■ Screws
The mounting brackets are secured with screws to the on-site sup-
port elements (matched to the individual sheet steel roof).
Mounting rails are fitted directly to the mounting brackets.
A
Vitosol-FM/-F, for vertical and horizontal installation
B
Vitosol-TM, for vertical installation
C
Vitosol-TM, for horizontal installation
Design information regarding flat roof installation
11.1 Determining the collector row spacing "z"
At sunrise and sunset (when the sun is very low), shading cannot be
avoided when collectors are arranged behind one another. To keep
the reduction in yield within acceptable parameters, observe specific
row spacing (dimension z) in accordance with VDI Guideline 6002-1.
When the sun is at its highest on the shortest day of the year
(21/12), the rows at the back should be free of shading.
The angle of the sun β (at midday) on 21/12 must be used to calcu-
late the row spacing.
In Germany, this angle lies between 11.5° (Flensburg) and 19.5°
(Constance), depending on latitude.
sin (180° – (α + β))z
h
=
sinβ
z
h
h
β
α α
z = Collector row spacing
h = Collector height (for dimensions see chapter "Specification" for
the relevant collector)
α = Angle of collector inclination
β = Angle of the sun
Example:
Würzburg is approximately located on latitude 50° north.
In the northern hemisphere, this value is deducted from a fixed angle
of 66.5°:
Angle β = 66.5° − 50° = 16.5°
Example with Vitosol-FM/-F, type SH
h = 1056 mm
α = 45°
β = 16.5°
1056 mm · sin (180°– 61.5°)
h · sin (180°– (α+β))
sin β
z =
sin 16.5°
z = 3268 mm
z =
α Collector row clearance z in mm
Vitosol-FM/-F Vitosol 300-
TM, type
SP3C
Vitosol 200-
TM, type SPEA
Type SV Type SH
Flensburg
25° 6890 3060 6686 —
30° 7630 5715 7448 7511
35° 8370 3720 8154 —
45° 9600 4260 9373 9453
50° 10100 4490 9878 —
60° 10890 4830 10660 10750
Kassel
25° 5830 2590 5446 —
30° 6385 2845 5981 6032
35° 6940 3100 6471 —
45° 7840 3480 7299 7360
50° 8190 3640 7631 —
60° 8720 3870 8119 8187
Munich
25° 5160 2290 4862 —
30° 5595 2485 5290 5772
35° 6030 2680 5677 —
45° 6710 2980 6321 6993
50° 6980 3100 6571 —
60° 7350 3260 6921 7737
Design information regarding installation on pitched roofs — above roof installation
(cont.)
108
VIESMANN
VITOSOL
11
5822 440 GB
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