Optional Accessories; Outdoor Air Inlet - Hitachi RCI-1.0FSN3 Service Manual

2 Unit installation

2.11 Optional accessories

2.11.1 Outdoor air inlet

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Outdoor air inlet duct connection position
For RCI-FSN3 indoor units: OACI-160K2 and PD-75
The inlet of outdoor air is possible through the PD-75 or the OACI-160K2 duct connection in the position shown in the
figure.
OACI-160K2
This kit can not supply the fresh air by itself. Therefore, connect the duct and supply the fresh air from the total heat
exchanger or the duct fan.
When connecting this kit to the total heat exchanger or the duct fan, make an interlock to the fan of the indoor unit. The
example is shown below.
74
SMGB0077 rev.0 - 01/2013
Indoor Unit Printed Circuit Board
CN7
2 1
RY
Auxiliary Relay
Total Heat Exchanger
or Magnetic Switch
PD-75A
RYa
AC
52F