STIEBEL ELTRON SOL 25 PLUS - Manual (Page 21)

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Figure 5.4.5: Typical wall-mount installation of a 60° collector array.
At least 30 ft. (9.3 m)
Array spacing for 60° Vertical Mounting
on a flat roof or ground.
At least 18 ft. (5.3 m)
Array spacing for 30° Vertical Mounting
on a flat roof or ground.
Figure 5.4.3: Recommended row spacing for 60° vertical arrays for latitudes up to 50°.
At least 30 ft. (9.3 m)
Array spacing for 60° Vertical Mounting
on a flat roof or ground.
At least 18 ft. (5.3 m)
Array spacing for 30° Vertical Mounting
on a flat roof or ground.
Figure 5.4.4: Recommended row spacing for 30° vertical arrays for latitudes up to 50°.
5.4.1 Vertical 30° Mounting on a Flat
Roof
(Please review section 5.2.0)
1. Choose attachment site, allowing for
subsequent pipe penetration.
2. Assemble 2 triangular trusses using the 65”
rails (M-103), the 92” rails (M-102), the 79”
rails (M-105), the brackets (M-101), and the 55
mm bolts as shown in Figure 5.4.1. Note that
the 65” rails are cut to 46.5”.
3. Bolt the trusses to the cross braces
connecting the bolts as shown in Figure 5.2.2.
The resulting assembly should look similar to
Figure 5.2.3. The collector frames may then be
bolted to the holes in the 92” rails using the
20 mm bolts. The collector frames, as well as
the number of trusses used, depends upon the
number of collectors being installed (see Table
5.1). If multiple mounting frames are being set
up next to one another, use frame connector
kits (SFC001, shown in Figure 5.2.6) to join
them, as shown in Figures 5.2.7 and 5.2.8.
4. If installing one collector, the triangular
trusses with cross braces must be set up at
intervals of ≤ 43 in. (110 cm), If installing two
or more collectors, the triangle trusses with
their attached cross braces are to be positioned
at the midpoint, behind the collectors. With a 3
collector system the 3 triangular trusses should
be equidistant with 2 sets of cross braces
interconnecting them. The resulting assembly
should then be centered to support the R1/R2/
SFC001 frame assembly.
5. When installing four or five trusses, brace
both end spans with crossbraces, as shown
in 5.2.8. For six or more trusses, cross-braces
should also be placed in an inside span.
6. Fasten the flat-roof mounting racks to the
roof in an appropriate manner, or weight them
down with at least 400 lbs. (180 kg) of solid,
dead weight (e.g. concrete slab) per collector
if the installed height is less than 25 ft (8 m).
Remember to take the static and dynamic
(e.g., wind) loading into account for the roof
structure.
7. For installed heights above 25 ft. (8 m),
weighting is not advisable due to the higher
wind loading conditions. In this case, the holes
in the 79” rail at the base (M-105) should be
used to fasten the mounting hardware to the
roof (six M6 bolts per horizontal support).