STIEBEL ELTRON SOL 25 PLUS - Manual (Page 26)

26 | SOL 25 PLUS WWW.STIEBEL-ELTRON-USA.COM
4. Fasten the base of the flat-roof mounting racks to the solar roof
mount flashing kit (560105SQ). Remember to take the static and
dynamic (e.g., wind) loading into account for the roof structure.
Nominal distance is 25 53/64” between the front and back mounting
holes and 48” between the bases.
5.5.8 Horizontal 45° Mounting on a Wall
Procedures described above for mounting of collectors on a flat roof
apply to wall mounting, except for the following:
1. Cross braces should be attached to the 43” (cut down to 36”)
rail at the base of the trusses rather than the ones at the rear (as
pictured in figure 5.4.5).
2. Fasten the rear 36” rail of the trusses to the wall using the mount-
ing holes in a suitible manner.
3. Low elevation mounting configurations may be prone to damage
from falling ice or nearby vehicles or other hazards. Appropriate
precautions should be taken to mitigate these hazards.
5.5.9 Horizontal 30/45/60° Mounting On The Ground
Procedures described above for mounting of collectors on a flat roof
apply to ground mounting, except for the following:
1. Installer must ensure that the mounting foundation for the system
is not subject to movement, such as frost heaves. Therefore, it is
necessary to install footings below the frost line in locations subject
to freezing weather. If it is not possible or practicable to avoid
movement due to frost, etc., it will be necessary to provide a floating
frame that does not flex or warp the collectors’ mounting frames if
the ground shifts or heaves.
2. Ground mounting configurations may be prone to damage
from falling ice or nearby vehicles or other hazards. Appropriate
precautions should be taken to mitigate these hazards.
3. Ground mounting often requires longer outside piping runs,
so proper insulation and protection of collector piping essential.
Installers should consider laying pipe runs below grade to avoid
damage and to mark the location of these runs to avoid damage
from digging operations.
5.5.10 Horizontal 45° Mounting On A Pitched Roof
Procedures described above for mounting of collectors on a flat
roof apply to mounting on a pitched (sloped) roof, except for the
following:
1. The 45° mounting kits add 45° to an existing roof pitch, as shown
in table 5.2.9. Roofs with pitches above 9-in-12 generally should not
use this mounting kit, as the resulting collector tilt angle will be too
steep for almost any location.