Indoor Unit Installation
Concealed installation
• Install the unit according to the instructions below. Failure to do so may cause lead to both cooling and heating failure and the
condensation inside the house.
1) Allow enough space between the main unit and ceiling not to obstruct the flow of cool/warm air.
2) Place a partition plate between outlet and inlet sections.
3) Place a partition plate on the right side.
4) Change the upward airflow dipswitch (SW2-4) to ON to limit the upward airflow. (Factory default: OFF)
• Remove the front grille.
• Switch the dipswitch (SW2-4) on the PCB in the electrical equipment box to ON.
CAUTION
Be sure to turn on the upward airflow switch. Failure to do so may cause incomplete cooling/heating and formation
of condensation inside the house.
5) Use a movable lattice at the air outlet to allow the adjustment of cool/warm airflow direction.
6) Lattice size should be 70% or more of open rate.
1-15/16 (50)
or more
• For the installation process refer to "Exposed installation" on page 9.
11
Upward airflow dipswitch
Partition plate
Right side partition plate
1-15/16 (50)
or more
Movable lattice
Upper lattice
must not
project
70% or more
of open rate
Partition plate
Movable lattice
1-9/16 (40)
or less
Right side partition plate
Partition plate
13/16 – 1-3/16 (20-30)
unit: inch (mm)
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