SMA Solar Technology AG
18 SB50US-80US-IUS094030 Installation Guide
3 AC Voltage Configuration
3.1 Opening the Sunny Boy
1. Remove the six screws and lock washers from the housing cover and pull the cover forward
smoothly.
2. Place the cover, screws, and lock washers aside where they will be out of your way while you
are connecting wires and cables to the Sunny Boy.
CAUTION!
Be careful not to misplace the screws or the lock washers, as all six screws and lock
washers are required to ensure that the cover is grounded properly and is fully sealed to
the case. Handle the cover carefully, as even minor damage to the cover could result in an
inadequate seal between the cover and the case, thus allowing moisture to enter the case
and damage the sensitive electronic components.
NOTICE!
Do not install the Sunny Boy during periods of precipitation or high humidity (>95%).
Moisture trapped within the enclosure may cause corrosion and damage to the electronic
components.
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