SMA America, LLC
Mounting the Device
Installation Guide
SB20_25_30HFUS-eng-IUS113711
21
• Observe the minimum clearances to walls, other
devices or objects as shown in the diagram in order
to guarantee sufficient heat dissipation.
Overview minimum clearances for indoor installation:
For outdoor installation make sure that the Sunny Boy has
a clearance of 3 ft. (90 cm) from ground.
4.3 Mounting the wall mounting bracket
The Sunny Boy is shipped with a wall mounting bracket that is suitable for use with most walls.
The horizontal part of the bracket has 5 holes. Make sure that the wall you choose to mount the
Sunny Boy on is sturdy enough to support its weight (50 lbs./23 kg) over a long period of time and
that the wall is plumb. Be sure to use the appropriate type of mounting hardware for the wall material
and ensure that the hardware is no smaller than
1
⁄
4
in. (6 mm) in diameter.
Top
12 in. (300 mm)
Front
2 in. (50 mm)
Bottom
10 in. (250 mm)
Multiple Sunny Boy units installed in areas with high ambient temperatures
The individual Sunny Boy units must be far enough apart to ensure that the individual
Sunny Boy units do not take in the cooling air of the neighboring unit.
If necessary, increase the clearances and make sure there is enough ventilation to ensure
sufficient cooling of the Sunny Boy units.
Do not install several Sunny Boy inverters on top of each other. The Sunny Boy takes
cooling air in from underneath and blows it out above through the cooling fins. The heated
air disperses upwards. In case several Sunny Boy inverters are installed on top of each
other, the lower Sunny Boy blows the heated air into the Sunny Boy installed above.
This reduces the cooling efficiency and thus the yield of the upper Sunny Boy.
