Installation Manual

1) Install the indoor unit temporarily
Attach the hanger bracket to the suspension bolt. Be sure to
fix it securely by using a nut and washer on the upper and
lower sides of the hanger bracket, as shown in the figure
below.
1 Nut (field supply)
2 Washer (field supply)
3 Hanger bracket
4 Double nuts (field supply, tighten)
1.3 Install the indoor unit
When installing optional accessories, read the installation
manual for optional accessories. Depending on field conditions, it
may be easier to install optional accessories before installing the
indoor unit (except for the decoration panel). However, for an
existing ceiling, install the fresh air inlet component kit and
branch duct before installing the unit.
2) Fix the paper pattern for installation (for new ceilings only)
- The paper pattern for installation corresponds with the
measurements of the ceiling opening. Consult the builder for
details.
- The center of the ceiling opening is indicated on the paper pattern
for installation.
- After removing the packaging material from the paper patten for
installation, attach it to the unit with the attached screws, as
shown in the figure below.
3) Adjust the unit to the right position for installation
Refer to "Preparations before installation" on page 5.
1 Paper pattern for installation (on some models)
2 Center of the ceiling opening
3 Screws (supplied with the decoration panel)
1
2
3
4
1
2
3
4) Check if the unit is horizontally level
- Do not install the unit tilted. The indoor unit is equipped with a
built-in drain pump and float switch. (If the unit is tilted against
the direction of the condensate flow (the drain piping side is
raised), the float switch may malfunction and cause water to drip.
- With a water level or water-filled vinyl tube, check if the unit is
level at all four corners, as shown in the figure below.
1 Water level
2 Vinyl tube
5) Remove the paper pattern for installation (for new ceiling
only)
1
1
2
2
6