FVXS Installation Manual

11 ■English
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 ow 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 airow dipswitch (SW2-4) to ON to limit the upward airow. (Factory default: OFF)
• Remove the front grille.
• Switch the dipswitch (SW2-4) on the PCB in the electrical equipment box to ON.
Upward airflow dipswitch
CAUTION
Be sure to turn on the upward airow 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 airow direction.
6) Lattice size should be 70% or more of open rate.
Right side partition plate
Partition plate
1-15/16 (50)
or more
1-15/16 (50)
or more
Partition plate
Movable lattice
9/16 – 13/16 (15 – 20)
16-1/8 (410)
4-3/4
(120)
70% or more
of open rate
1-9/16 (40)
or less
13/16
– 1-3/16 (20-30)
Upper lattice
must not
project
Right side partition plate
Partition plate
Movable lattice
2-3/4 (70) or more
unit: inch (mm)
• For the installation process refer to “Exposed installation” on page 9.
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