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2 Unit installation
2.11 Optional accessories
2.11.1 Outdoor air inlet
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Outdoor air inlet duct connection position (OACI-232 or PD-75)
The inlet of outdoor air is possible through the PD-75 (RCI, RCIM)
or the OACI-232 (RCI) duct connection in the position shown in the
figure.
This unit cannot take in outdoor air by itself and must be connected to a duct fitted with a fan and a control damper.
The duct must be controlled to ensure it only works when the unit
is running. The figure shows an example of electrical control.
N O T E
•
The total height of the unit is increased by around 80 mm when the outdoor air inlet duct (OACI-232) is installed.
Take this measurement into account when installing the unit.
•
Use a cable with a three-terminal connector (PCC-1A) for the CN7 connector on the indoor PCB.
The maximum amount of incoming outdoor air is 20% of the air flow rate of the indoor unit. If the amount of incoming outdoor
air exceeds this value, condensation may be produced on the inner surface of the drain pan (air inlet hole) and, in some
cases, dew may form. Always limit yourself to the values indicated in the figure below.
68
SMGB0063 rev. 1 - 10/2010
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