Ingecon SUN 125 TL U 208 Outdoor, Installation Manual, Page: 18 / 88

ABB2000IKI01
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Installation manual Ingeteam
2.1.4. Atmospheric conditions
The ambient air must be clean and relative humidity must not exceed 50% at over 104 °F (40 °C). Higher levels of
relative humidity, up to 95%, can be tolerated at below 86 °F (30 °C).
It should be borne in mind that moderate condensation may occasionally occur as a consequence of temperature
variations. For this reason, apart from the unit’s own protection, vigilance of these units is necessary once they have
been started up on sites where the conditions described above are not expected to be present.
In the event of condensation, never apply voltage to the unit.
2.1.5. Contamination class
The pollution class for which the units have been designed is grade 3.
Suitable measures should be taken to provide dust-free air of sufficient quality in the vicinity of the inverter.
2.1.6. Acoustic contamination
When on, the inverter generates a buzzing sound.
Do not place it in an occupied room, or on light supports which might amplify this buzz. The mounting surface must
be firm and appropriate for the weight of the unit.
2.1.7. Ventilation
These units intake air through the sides of the housing and expel it from the front and back.
A minimum obstacle-free space of 40 in (1 m) must be maintained on both sides as well as in front of and behind the
unit to allow the free circulation of air.
These units are fitted with two cooling fans on the top of the cabinet. These fans start up for a few
seconds each time the inverter is connected to the mains and is about to inject power. This procedure
makes it possible to easily check proper operation.
The fans require an adequate flow of clean, dust-free air for proper operation.
Do not place any object on top of the unit.