User Manual

8
Fronius String Control 250/25 Installation
Wall anchors
and Screws
Depending on the surface, different wall anchors and screws may be
required for installing the Fronius String Control 250/25. Therefore, these
wall anchors and screws are not included with the Fronius String Control
250/25. The installer is responsible for selecting the proper wall anchors
and screws.
In most cases, you should use 1/4 in. or 5/16 in. stainless steel or alumini-
um screws capable of supporting 46.26 lbs.
Recommen-
ded Screws
for Mounting
Installation
Position
The Fronius String Control 250/25 can be installed in any position from
horizontal to vertical. However, the cable inputs and outputs should point
downwards as much as possible.
Selecting a
Location
When selecting the location, please observe the following criteria:
- Install on a solid surface.
- The ambient temperature may not fall below -13 °F (-25 °C) nor exceed
+ 140 °F (+60 °C).
- NEMA 3R protection means that the Fronius String Control 250/25 is
not susceptible to water spray from any direction. However, the ma-
nufacturer recommends, if possible, that the String Control 250/25 not
be exposed to direct moisture or to a direct water jet (e.g., from sprink-
lers).
- Protect from direct sunlight and direct exposure to the elements.
- Install under the solar modules where possible.
Drilling Pat-
tern
(a)
(b)
(c)
(d)
(a)
(a) = 8.858 in (225 mm)
(b) = 28.858 in. (733 mm)
(c) = 29.4 in. (746 mm)
(d) = 9.843 in. (250 mm)