STIEBEL ELTRON SOL 25 PLUS - Manual (Page 30)

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96.3 in.
48.1 in. 24 in. 48.1 in.
144.4 in.
24 in. 48.1 in.
Brace
R2 Profile Rail
(2-collector width)
R1 Profile Rail
(1-collector width) Frame
Splice
R2 Profile Rail
(2-collector width)
18
Figure 18: Multiple-collector framing arrangement, with frame connectors and
cross-bracing.
M10 nuts
M10 bolts
Frame Connectors
19
Figure 19: SFC001 Frame Connector (Splice) kit.
Figure 20: SFC001 Frame Connector (Splice) kit.
Frame Connector (splice) to
join two profile rails
Profile rails
20
If multiple arrays of collectors are being
installed on a flat roof, one behind another,
the recommended spacing between them
should be:
• at least 30 ft. (9.3 m) for 60° vertical
installation, as shown in Figure 21; or
• at least 18 ft. (5.3 m) for 30° vertical
installation, as shown in Figure 22.
This spacing prevents excessive shading
from adjacent rows for latitudes of up to
50°. For latitudes significantly higher than
50°, multiple rows of collectors may not be
practical due to low sun altitude angles.
Fastening To Structures
The type of roof or wall is a crucial factor in
the choice of fasteners. Remember to take
the static and dynamic (live load) forces into
account.
The 30/60° vertical mounting racks can
develop significant pull-out forces under
heavy wind conditions, particularly in the
60° tilt orientation; therefore it is important
to take wind loads into account.
Mounting ht. Shear Force Tensile Force
Up to 26 ft.
(8m)
470 lbs.
(2.1 kN) 250 lbs.
(1.1 kN)
Up to 65 ft.
(20m)
790 lbs.
(3.5 kN) 700 lbs.
(3.1 kN)
To handle shear forces along the fastening
surface, 6 fasteners over which the shear
force is distributed are recommended.
To handle tensile forces perpendicular
to the fastening surface, 6 fasteners over
which the tensile force is distributed are
recommended.
For anchoring in concrete, use six M8 UPAT
Multicones or SM M10 anchors, both of
stainless steel, per collector.
For anchoring in wood, use six wood screws
in accordance with DIN 571, at least 10 x 80,
of stainless steel, per collector.
5.2.2 30/60° Mounting on a Wall
It is not generally advisable to use the 30°
mounting orientation on a wall unless
additional supporting structures are
installed to bear the loads. Installers should
consult with a structural engineer.
Procedures described above for mounting